CN215897570U - Explosion-proof frequency converter - Google Patents
Explosion-proof frequency converter Download PDFInfo
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- CN215897570U CN215897570U CN202121992530.0U CN202121992530U CN215897570U CN 215897570 U CN215897570 U CN 215897570U CN 202121992530 U CN202121992530 U CN 202121992530U CN 215897570 U CN215897570 U CN 215897570U
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Abstract
The application relates to an explosion-proof frequency converter, which belongs to the technical field of explosion-proof electrical appliances and comprises a frequency converter circuit assembly; the frequency converter circuit assembly is arranged in an explosion-proof box body which is composed of an explosion-proof box cover, an explosion-proof cavity and an integrated radiating fin bottom cover; the frequency converter circuit assembly comprises a control board, a trigger board and a power device integration module, wherein the control board and the power device integration module are respectively and electrically connected with the trigger board; the heating element of the power device integrated module is arranged close to the inner side face of the integrated radiating fin bottom cover, and a radiating fin structure is formed on the outer side face of the integrated radiating fin bottom cover. The utility model provides a converter product, the relevant subassembly of heat dissipation sets up outside the box, has also reached the heat dissipation requirement of converter when satisfying explosion-proof requirement to whole plant equipment's steady operation has been guaranteed.
Description
Technical Field
The application belongs to the technical field of explosion-proof electrical apparatus, concretely relates to explosion-proof frequency converter.
Background
In the production scenes with explosion-proof requirements, such as petrochemical industry and the like, equipment meeting the explosion-proof requirements is needed to be adopted on site. The frequency converter is a common component of such equipment, and in such equipment, a common frequency converter is generally integrally arranged in an explosion-proof box so as to meet the relevant explosion-proof requirements. However, in this implementation manner, since the entire frequency converter is located in the explosion-proof box, in the operation of the actual device, the heat dissipated by the heat dissipation assembly of the frequency converter cannot be transferred to the outside of the explosion-proof box, which causes the temperature of the explosion-proof box to be too high, and affects the stable operation of the related control components in the box, thereby causing the abnormality of the device.
The above is only for the purpose of assisting understanding of the technical aspects of the present invention, and does not represent an admission that the above is prior art.
SUMMERY OF THE UTILITY MODEL
For overcoming the problem that exists among the correlation technique at least to a certain extent, this application provides an explosion-proof frequency converter, through with the relevant subassembly setting of heat dissipation outside the box to avoid the relevant problem among the prior art.
In order to achieve the purpose, the following technical scheme is adopted in the application:
the application provides an explosion-proof frequency converter, which comprises a frequency converter circuit assembly; the frequency converter circuit assembly is arranged in an explosion-proof box body which is composed of an explosion-proof box cover, an explosion-proof cavity and an integrated radiating fin bottom cover;
the frequency converter circuit assembly comprises a control board, a trigger board and a power device integration module, wherein the control board and the power device integration module are respectively and electrically connected with the trigger board;
the heating element of the power device integrated module is arranged close to the inner side face of the integrated radiating fin bottom cover, and a radiating fin structure is formed on the outer side face of the integrated radiating fin bottom cover.
Optionally, the explosion-proof box cover is positioned at the front side of the explosion-proof cavity; the rear side edge of the explosion-proof cavity is inwards formed with a folded edge structure, and the integrated radiating fin bottom cover is fixedly connected with the explosion-proof cavity through bolts penetrating through the folded edge structure.
Optionally, an explosion-proof cooling fan is further arranged on the outer side of the integrated cooling fin bottom cover.
Optionally, the frequency converter circuit assembly further includes an external circuit for implementing overload protection of the motor, where the external circuit includes a first resistor, a second resistor, a third resistor, and a controllable three-terminal switch that operates when the motor is overloaded;
in the external circuit, one end of the first resistor is connected to a 0V input end of a control panel, the other end of the first resistor and one end of the second resistor are respectively connected to a normally open end of the controllable three-terminal switch, the other end of the second resistor and one end of the third resistor are respectively connected to a normally closed end of the controllable three-terminal switch, the other end of the third resistor is connected to a 10V input end of the control panel, and a common end of the controllable three-terminal switch is connected to an analog input end of the control panel.
Optionally, a wire outlet is formed in the lower side of the explosion-proof cavity, and an explosion-proof aerial plug is arranged on the wire outlet.
Optionally, the frequency converter circuit assembly further comprises a display panel electrically connected to the control board; the explosion-proof box cover is provided with a display window, and the display panel is embedded in the display window.
Optionally, the display panel is a manipulation display integrated panel.
This application adopts above technical scheme, possesses following beneficial effect at least:
according to the technical scheme, the frequency converter circuit assembly is arranged in an explosion-proof box body formed by an explosion-proof box cover, an explosion-proof cavity and an integrated radiating fin bottom cover; the outer side surface of the integrated radiating fin bottom cover is provided with a radiating fin structure, and related heating devices in the frequency converter circuit assembly are arranged close to the inner side surface of the integrated radiating fin bottom cover. The explosion-proof frequency converter with the specific structure has the advantages that the related heat dissipation components are arranged outside the box body, so that the heat dissipation requirement of the frequency converter is met while the explosion-proof requirement is met, and the stable operation of the whole device is guaranteed.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
The accompanying drawings are included to provide a further understanding of the technology or prior art of the present application and are incorporated in and constitute a part of this specification. The drawings expressing the embodiments of the present application are used for explaining the technical solutions of the present application, and should not be construed as limiting the technical solutions of the present application.
Fig. 1 is a schematic structural diagram of an explosion-proof frequency converter according to an embodiment of the present application;
fig. 2 is a schematic structural diagram ii of an explosion-proof frequency converter according to an embodiment of the present application;
fig. 3 is a schematic diagram of external circuit connection of a frequency converter circuit assembly of an explosion-proof frequency converter according to an embodiment of the present application.
In the figure, the position of the upper end of the main shaft,
100-explosion-proof box cover; 200-an explosion-proof cavity; 210-a hem structure; 300-an integrated heat sink bottom cover;
410-a control panel; 420-a trigger plate; 430-power device integration module;
441-a first resistance; 442-a second resistance; 443-third resistance; 444-controllable three-terminal switch;
500-explosion-proof aviation plug.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the technical solutions of the present application will be described in detail below. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without making any creative effort, shall fall within the protection scope of the present application.
As described in the background art, in a production scene with explosion-proof requirements such as petrochemical industry, a production site needs to adopt equipment meeting the explosion-proof requirements. The frequency converter is a common component of such equipment, and in such equipment, a common frequency converter is generally integrally arranged in an explosion-proof box so as to meet the relevant explosion-proof requirements. However, in this implementation manner, since the entire frequency converter is located in the explosion-proof box, in the operation of the actual device, the heat dissipated by the heat dissipation assembly of the frequency converter cannot be transferred to the outside of the explosion-proof box, which causes the temperature of the explosion-proof box to be too high, and affects the stable operation of the related control components in the box, thereby causing the abnormality of the device.
To this, this application provides an explosion-proof frequency converter, through set up the relevant subassembly of heat dissipation outside the box to avoid the relevant problem among the prior art.
As shown in fig. 1 and fig. 2, in an embodiment, the explosion-proof frequency converter proposed by the present application includes a frequency converter circuit assembly; the frequency converter circuit assembly is arranged in an explosion-proof box body formed by an explosion-proof box cover 100, an explosion-proof cavity 200 and an integrated radiating fin bottom cover 300;
the frequency converter circuit assembly comprises a control board 410, a trigger board 420 and a power device integration module 430, wherein the control board 410 and the power device integration module 430 are respectively and electrically connected with the trigger board 420 (not shown in the figure);
it is easily understood that the control board 410, the trigger board 420 and the power device integration module 430 are used to implement the frequency conversion control function of the frequency converter, for example, the power device integration module is specifically an IGBT-based integration module;
in this embodiment, as shown in fig. 1, the heat generating element (mainly, a switching power device) of the power device integrated module 430 is disposed closely to the inner side of the integrated heat sink bottom cover 300, and the outer side of the integrated heat sink bottom cover 300 is formed with the heat dissipating fin structure 310 (as shown in fig. 1 and 2).
According to the technical scheme, the frequency converter circuit assembly is arranged in an explosion-proof box body formed by an explosion-proof box cover, an explosion-proof cavity and an integrated radiating fin bottom cover; the outer side surface of the integrated radiating fin bottom cover is provided with a radiating fin structure, and related heating devices in the frequency converter circuit assembly are arranged close to the inner side surface of the integrated radiating fin bottom cover. The explosion-proof frequency converter with the specific structure has the advantages that the related heat dissipation components are arranged outside the box body, so that the heat dissipation requirement of the frequency converter is met while the explosion-proof requirement is met, and the stable operation of the whole device is guaranteed.
To facilitate understanding of the technical solutions of the present application, the technical solutions of the present application will be described below with reference to another embodiment.
As shown in fig. 1 to 3, in this embodiment, the explosion-proof frequency converter includes a frequency converter circuit assembly; the frequency converter circuit assembly is arranged in an explosion-proof box body formed by an explosion-proof box cover 100, an explosion-proof cavity 200 and an integrated radiating fin bottom cover 300;
specifically, in order to facilitate the production of the product, in this embodiment, the explosion-proof box cover 100 is located at the front side of the explosion-proof cavity 200; the rear side edge of the explosion-proof cavity 200 is inwardly formed with a hem structure 210, and the integrated heat sink bottom cover 300 is fixedly connected with the explosion-proof cavity 200 through bolts penetrating through the hem structure 210.
Similarly, the frequency converter circuit assembly includes a control board 410, a trigger board 420 and a power device integrated module 430, wherein the control board 410 and the power device integrated module 430 are electrically connected to the trigger board 420 respectively (not shown in the figure);
the control board 410, the trigger board 420 and the power device integration module 430 are used for realizing a frequency conversion control function of the frequency converter, for example, the power device integration module is specifically an IGBT-based integration module;
in this embodiment, as shown in fig. 1, the heat generating element (mainly, a switching power device) of the power device integrated module 430 is disposed closely to the inner side of the integrated heat sink bottom cover 300, and the outer side of the integrated heat sink bottom cover 300 is formed with the heat dissipating fin structure 310 (as shown in fig. 2).
In addition, in this embodiment, as shown in fig. 3, the frequency converter circuit assembly further includes an external circuit for implementing overload protection of the motor, where the external circuit includes a first resistor 441, a second resistor 442, a third resistor 443, and a controllable three-terminal switch 444 that operates when the motor is overloaded;
as shown IN fig. 3, IN this embodiment, one end of the first resistor 441 is connected to the 0V input terminal of the control board 410, the other ends of the first resistor 441 and the second resistor 442 are respectively connected to the normally open terminal 1 of the controllable three-terminal switch 444, the other ends of the second resistor 442 and the third resistor 443 are respectively connected to the normally closed terminal 2 of the controllable three-terminal switch 444, the other end of the third resistor 443 is connected to the 10V input terminal of the control board 410, and the common terminal Com of the controllable three-terminal switch 444 is connected to the analog input terminal IN of the control board 410.
As will be readily understood by those skilled in the art, in general, the frequency converter itself has an analog input control terminal for implementing overload protection and other functional applications.
In this embodiment, the output frequency of the frequency converter is controlled by a 0-10V signal, and the resistors R1, R2, and R3 are connected in series to form a divided voltage, under normal conditions, the common terminal Com of the controllable three-terminal switch 444 is conducted with the normally-closed terminal 2, and the input voltage is the divided voltage of R1+ R2; when overload occurs, the controllable three-terminal switch 444 is operated, the common terminal Com is conducted with the normally open terminal 1, and the input voltage is divided by R1, so that the voltage of the analog input end is reduced, the frequency and the load of the frequency converter are reduced, and overload protection is realized.
It is easy to understand that the controllable three-terminal switch in this embodiment can be implemented based on a relay, and the overcurrent signal triggering the switching action can be led out by the frequency converter itself or sent out by an external system.
The configuration of the above-mentioned external circuit of this application can make things convenient for this converter product to realize motor overload protection function in practical application, and because external circuit itself is in explosion-proof box, has also satisfied explosion-proof demand under the explosion-proof scene.
In the embodiment, the frequency converter circuit assembly is arranged in an explosion-proof box body consisting of an explosion-proof box cover, an explosion-proof cavity and an integrated radiating fin bottom cover; the outer side surface of the integrated radiating fin bottom cover is provided with a radiating fin structure, and related heating devices in the frequency converter circuit assembly are arranged close to the inner side surface of the integrated radiating fin bottom cover. The explosion-proof frequency converter with the specific structure has the advantages that the related heat dissipation components are arranged outside the box body, so that the heat dissipation requirement of the frequency converter is met while the explosion-proof requirement is met, and the stable operation of the whole device is guaranteed.
In order to further ensure the heat dissipation effect, in this embodiment, an explosion-proof heat dissipation fan (not shown) is further disposed outside the integrated heat dissipation fin bottom cover 300.
It is to be understood that the explosion-proof heat dissipation fan is to enhance the surface convection of the heat dissipation fin structure 310, and the specific installation position and direction thereof are determined based on the specific shape of the heat dissipation fin structure and the field installation conditions, which is not illustrated herein.
In this embodiment, as shown in fig. 2, a wire outlet is formed at the lower side of the explosion-proof cavity 200, and an explosion-proof aviation plug 500 is disposed on the wire outlet, so that external wiring (such as a power line, an output line, a control line, etc.) of the product is facilitated by using the explosion-proof aviation plug on the premise of meeting explosion-proof requirements.
In this embodiment, the inverter circuit assembly further includes a display panel (not shown) electrically connected to the control board; the display window is arranged on the explosion-proof box cover 100, the display panel is embedded in the display window, and the display window and the display panel are easy to understand, so that a user can conveniently observe the working state of the frequency converter product.
Furthermore, under some specific application scenes, the display panel is an integrated control display panel, and the integrated control display panel is adopted, so that a user can conveniently carry out field debugging on the frequency converter product.
The above description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. An explosion-proof frequency converter is characterized by comprising a frequency converter circuit assembly; the frequency converter circuit assembly is arranged in an explosion-proof box body which is composed of an explosion-proof box cover, an explosion-proof cavity and an integrated radiating fin bottom cover;
the frequency converter circuit assembly comprises a control board, a trigger board and a power device integration module, wherein the control board and the power device integration module are respectively and electrically connected with the trigger board;
the heating element of the power device integrated module is arranged close to the inner side face of the integrated radiating fin bottom cover, and a radiating fin structure is formed on the outer side face of the integrated radiating fin bottom cover.
2. The explosion-proof frequency converter according to claim 1, wherein the explosion-proof box cover is positioned at the front side of the explosion-proof cavity; the rear side edge of the explosion-proof cavity is inwards formed with a folded edge structure, and the integrated radiating fin bottom cover is fixedly connected with the explosion-proof cavity through bolts penetrating through the folded edge structure.
3. The explosion-proof frequency converter according to claim 2, wherein an explosion-proof heat dissipation fan is further arranged outside the integrated heat dissipation fin bottom cover.
4. The explosion-proof frequency converter according to claim 1, wherein the frequency converter circuit assembly further comprises an external circuit for realizing overload protection of the motor, and the external circuit comprises a first resistor, a second resistor, a third resistor and a controllable three-terminal switch which acts when the motor is overloaded;
in the external circuit, one end of the first resistor is connected to a 0V input end of a control panel, the other end of the first resistor and one end of the second resistor are respectively connected to a normally open end of the controllable three-terminal switch, the other end of the second resistor and one end of the third resistor are respectively connected to a normally closed end of the controllable three-terminal switch, the other end of the third resistor is connected to a 10V input end of the control panel, and a common end of the controllable three-terminal switch is connected to an analog input end of the control panel.
5. The explosion-proof frequency converter according to claim 1, wherein an outlet is formed at the lower side of the explosion-proof cavity, and an explosion-proof aerial plug is arranged on the outlet.
6. The explosion-proof frequency converter according to claim 1, wherein the frequency converter circuit assembly further comprises a display panel electrically connected to the control board; the explosion-proof box cover is provided with a display window, and the display panel is embedded in the display window.
7. Explosion-proof frequency converter according to claim 6, characterized in that the display panel is a manipulation display integrated panel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121992530.0U CN215897570U (en) | 2021-08-23 | 2021-08-23 | Explosion-proof frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121992530.0U CN215897570U (en) | 2021-08-23 | 2021-08-23 | Explosion-proof frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215897570U true CN215897570U (en) | 2022-02-22 |
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ID=80341486
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121992530.0U Active CN215897570U (en) | 2021-08-23 | 2021-08-23 | Explosion-proof frequency converter |
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| Country | Link |
|---|---|
| CN (1) | CN215897570U (en) |
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2021
- 2021-08-23 CN CN202121992530.0U patent/CN215897570U/en active Active
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