Industrial factory building fan power distribution device

Abstract

The utility model relates to the technical field of power distribution devices, and discloses an industrial factory building fan power distribution device, which comprises a power distribution box, and a plurality of fan control units, an overload protection unit, a short circuit protection unit and a maintenance switch unit which are arranged in the power distribution box. According to the industrial factory building fan power distribution device, through mutual cooperation of the fan control units, the overload protection unit, the short circuit protection unit and the maintenance switch unit, the effect of independent control and protection of the multiple fans can be achieved, modular installation is adopted among the multiple units, independent maintenance work is facilitated, and the power distribution efficiency is improved. And meanwhile, through mutual cooperation of the main control board, the temperature sensor, the logic control board, the high-precision current transformer and the temperature compensation chip, when the high-precision current transformer detects that the current exceeds a threshold value, the logic control board enables the corresponding fan to reduce the speed, and if the current returns to normal in a short time, the temperature compensation chip is switched off. And if yes, normal work of the fan is recovered.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of power distribution devices, in particular to an industrial plant fan power distribution device. BACKGROUND

[0002] In an industrial plant, a fan is a key device for maintaining air circulation, temperature regulation and waste gas discharge in the plant, and a power distribution device controls the operation of the fan and plays an important role in ensuring stable and reliable operation of the power system.

[0003] The existing fan power distribution device often has some problems, and it is difficult to individually and accurately control each fan. When the fan has an overload or short circuit fault, there is a lack of effective protection measures, which may cause equipment damage and even safety accidents. In addition, the wiring is complex, the maintenance requires overall power-off, and the production efficiency is affected. In order to further optimize the use effect of the industrial plant fan power distribution device, an industrial plant fan power distribution device is provided. CONTENT OF THE UTILITY MODEL

[0004] In view of the deficiencies of the prior art, the application provides an industrial plant fan power distribution device, which can have the functions of individual control of multiple fans, overload protection, short circuit protection and switch control during maintenance, and optimizes the actual use effect.

[0005] To achieve the above purpose, the application provides the following technical scheme: an industrial plant fan power distribution device, comprising a power distribution box and a plurality of fan control units, overload protection units, short circuit protection units and maintenance switch units arranged in the power distribution box, so that the inside of the power distribution box is fixedly connected with a main control board, a temperature sensor and a connector, the temperature sensor and the connector are electrically connected with the main control board, the plurality of fan control units are electrically connected with the connector, the fan control unit comprises a miniature circuit breaker and an alternating current contactor fixedly connected to the inner wall of the power distribution box, the alternating current contactor is electrically connected with the miniature circuit breaker, the plurality of overload protection units are respectively electrically connected with the plurality of fan control units, the overload protection unit comprises a logic control board, a high-precision current transformer and a temperature compensation chip fixedly connected to the inner wall of the power distribution box, the high-precision current transformer and the temperature compensation chip are electrically connected with the logic control board, the plurality of short circuit protection units are respectively electrically connected with the plurality of overload protection units, the short circuit protection unit comprises an electronic fuse and a magnetic latching circuit breaker fixedly connected to the inner wall of the power distribution box, the electronic fuse is electrically connected with the magnetic latching circuit breaker, the maintenance switch unit comprises a double-break rotary switch fixedly connected to the outer surface of the power distribution box, and the inside of the power distribution box is provided with a heat dissipation assembly.

[0006] Through the above scheme, through the mutual cooperation between the multiple fan control units, overload protection units, short circuit protection units and maintenance switch units arranged, the effect of independently controlling and protecting multiple fans can be realized, and the multiple units are installed in a modular manner, facilitating independent maintenance work without the need for overall power failure. At the same time, through the mutual cooperation between the main control board, temperature sensor, logic control board, high-precision current transformer and temperature compensation chip arranged, when the high-precision current transformer detects that the current exceeds the threshold value, the logic control board will slow down the corresponding fan. If the current returns to normal within a short period of time, the fan will resume normal operation. If it does not return to normal, the corresponding AC contactor power supply will be cut off, achieving the effect of dynamic overload protection. And through the cooperation of the electronic fuse and the magnetic latching circuit breaker, the fault can be isolated within milliseconds under the cooperation of multiple protection devices, making it more practical.

[0007] Further, the miniature circuit breaker is electrically connected with the connector, the AC contactor and the electronic fuse are electrically connected with the logic control board, and the magnetic latching circuit breaker is electrically connected with the double-break rotary switch.

[0008] Through the above scheme, the relationship between multiple components is defined, facilitating independent control and protection of multiple motors.

[0009] Further, the outer surface of the distribution box is fixedly connected with a connection interface and a fault display lamp, and the double-break rotary switch and the fault display lamp are electrically connected with the connection interface.

[0010] Through the above scheme, the connection interface arranged can facilitate the connection of the fan with the device, and the fault display lamp arranged can more intuitively display fault information, facilitating workers to quickly find the corresponding components for maintenance work.

[0011] Further, the inner wall of the distribution box is fixedly connected with a power module, and the power module is electrically connected with the main control board.

[0012] Through the above scheme, the power module arranged can provide power for each electrical element in the device, and also facilitates the connection of the device with the external municipal power supply.

[0013] Further, the heat dissipation assembly comprises an exhaust fan embedded in the top of the distribution box, and the outer surface of the distribution box is fixedly connected with heat dissipation fins on both sides.

[0014] Through the above scheme, when the exhaust fan starts, the hot air inside the distribution box can be extracted to the outside, thereby achieving the effect of accelerating heat dissipation inside the distribution box. The heat dissipation fins arranged can assist the exhaust fan in dissipating heat from the distribution box, avoiding overheating damage inside the distribution box.

[0015] Further, the bottom of the distribution box is provided with an air inlet cover, and the bottom end of the air inlet cover is fixedly connected with a filter screen.

[0016] Through the above scheme, the filter screen can reduce the probability of dust entering the distribution box through the air inlet cover, thereby optimizing the working environment of the electrical components inside the distribution box.

[0017] Further, the front of the distribution box is provided with a double-door, and the outer surface of the double-door is fixedly connected with a handle.

[0018] Through the above scheme, the double-door and the handle can facilitate the maintenance of the components inside the distribution box, thereby prolonging the service life of the device.

[0019] Further, the four corners of the outer surface of the distribution box are fixedly connected with positioning seats.

[0020] Through the above scheme, the positioning seats can hang the distribution box on a suitable position in the industrial plant, thereby facilitating the stable connection of multiple fans with the device.

[0021] Compared with the prior art, the technical scheme of the present application has the following beneficial effects:

[0022] The industrial plant fan power distribution device can realize independent control and protection of multiple fans through the cooperation between the multiple fan control units, overload protection units, short-circuit protection units and maintenance switch units, and the modular installation of the multiple units facilitates independent maintenance without the need for overall power-off. Meanwhile, through the cooperation between the main control board, temperature sensor, logic control board, high-precision current transformer and temperature compensation chip, when the high-precision current transformer detects that the current exceeds the threshold, the logic control board will reduce the speed of the corresponding fan. If the current returns to normal within a short period of time, the fan will return to normal operation. If the current does not return to normal, the corresponding AC contactor power supply will be cut off, achieving dynamic overload protection. Furthermore, the cooperation between the electronic fuse and the magnetic latching circuit breaker can isolate faults within milliseconds under the cooperation of multiple protection devices, making the device more practical. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 It is a whole front view structural schematic diagram of the structure of the present application;

[0024] Figure 2 It is a top view structural schematic diagram of the distribution box inside the structure of the present application;

[0025] Figure 3 It is a bottom view structural schematic diagram of the distribution box inside the structure of the present application;

[0026] Figure 4It is a schematic view of partial structure of the structure of the application.

[0027] Figure 5 It is a schematic view of plane structure of the structure of the application.

[0028] In the figure:

[0029] 1, distribution box; 2, main control panel; 3, temperature sensor; 4, connector; 5, fan control unit; 501, miniature circuit breaker; 502, AC contactor; 6, overload protection unit; 601, logic control panel; 602, high-precision current transformer; 603, temperature compensation chip; 7, short-circuit protection unit; 701, electronic fuse; 702, magnetic latching circuit breaker; 8, maintenance switch unit; 801, double-break rotary switch; 802, connection interface; 803, fault display lamp; 9, power module; 10, heat dissipation assembly; 1001, exhaust fan; 1002, heat dissipation fin; 1003, air inlet cover; 1004, filter screen; 11, double-door; 12, handle; 13, positioning seat. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the application.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3 , the fan power distribution device of the industrial plant in the embodiment comprises a distribution box 1 and a plurality of fan control units 5, overload protection units 6, short-circuit protection units 7 and maintenance switch units 8 arranged in the distribution box 1, so that the distribution box 1 is fixedly connected with a main control panel 2, a temperature sensor 3 and a connector 4 inside, the temperature sensor 3 and the connector 4 are electrically connected with the main control panel 2, the distribution box 1 is fixedly connected with a power module 9 on the inner wall, the power module 9 is electrically connected with the main control panel 2, the power module 9 arranged can provide electric energy for each electrical element in the device, and also facilitates the work of connecting the device with the external municipal power supply, the plurality of fan control units 5 are electrically connected with the connector 4, the fan control unit 5 comprises a miniature circuit breaker 501 and an AC contactor 502 fixedly connected to the inner wall of the distribution box 1, the AC contactor 502 is electrically connected with the miniature circuit breaker 501, the miniature circuit breaker 501 arranged facilitates the work of manual switch and overcurrent protection, and the AC contactor 502 arranged facilitates the work of main circuit on-off control.

[0032] Please refer to Figure 2 ,Figure 3 And Figure 4 , a plurality of overload protection units 6 are respectively connected with the plurality of fan control units 5, the overload protection unit 6 includes a logic control board 601 fixedly connected to the inner wall of the distribution box 1, a high-precision current transformer 602 and a temperature compensation chip 603, the inside of the logic control board 601 is inlaid with a frequency conversion module for independently adjusting the speed of the corresponding fan, the logic control board 601 can perform a "speed reduction-> cut off" hierarchical action, the high-precision current transformer 602 and the temperature compensation chip 603 are both connected with the logic control board 601, the high-precision current transformer 602 can collect real-time current, and the temperature compensation chip 603 can cooperate with the temperature sensor 3 to correct the overload threshold according to the ambient temperature, a plurality of short-circuit protection units 7 are respectively connected with the plurality of overload protection units 6, the short-circuit protection unit 7 includes an electronic fuse 701 and a magnetic latching circuit breaker 702 fixedly connected to the inner wall of the distribution box 1, the electronic fuse 701 is connected with the magnetic latching circuit breaker 702, the electronic fuse 701 can quickly respond to transient current, and the magnetic latching circuit breaker 702 can mechanically break the large current, the electronic fuse 701 and the magnetic latching circuit breaker 702 cooperate with each other to isolate the fault within milliseconds.

[0033] Please refer to Figure 2 , Figure 3 and Figure 4 , the maintenance switch unit 8 includes a double-break rotary switch 801 fixedly connected to the outer surface of the distribution box 1, the double-break rotary switch 801 can facilitate the connection of the motor and the device, the outer surface of the distribution box 1 is fixedly connected with a connection interface 802 and a fault display lamp 803, the double-break rotary switch 801 and the fault display lamp 803 are both connected with the connection interface 802, the connection interface 802 can facilitate the connection of the fan and the device, and the fault display lamp 803 can more intuitively display fault information, facilitating the work personnel to quickly find the corresponding components for maintenance work, the miniature circuit breaker 501 is connected with the connector 4, the alternating current contactor 502 and the electronic fuse 701 are both connected with the logic control board 601, and the magnetic latching circuit breaker 702 is connected with the double-break rotary switch 801, which defines the relationship between the plurality of components, facilitating the independent control and protection of the plurality of motors.

[0034] Please refer to Figure 1 , Figure 2 and Figure 3The inside of the distribution box 1 is provided with a heat dissipation assembly 10, the heat dissipation assembly 10 comprises an exhaust fan 1001 embedded in the top of the distribution box 1, and the outer surface of the distribution box 1 is fixedly connected with heat dissipation fins 1002 on both sides; when the exhaust fan 1001 is started, the hot air in the distribution box 1 can be extracted to the outside, thereby achieving the effect of accelerating the heat dissipation of the distribution box 1; the heat dissipation fins 1002 can assist the exhaust fan 1001 to dissipate heat for the distribution box 1, so as to avoid the case that the inside of the distribution box 1 is overheated and damaged; the bottom of the distribution box 1 is provided with an air inlet cover 1003, and the bottom end of the air inlet cover 1003 is fixedly connected with a filter screen 1004; the filter screen 1004 can reduce the probability of dust entering the inside of the distribution box 1 through the air inlet cover 1003, thereby optimizing the working environment of the electrical components in the distribution box 1; the front of the distribution box 1 is provided with a double-door 11, and the outer surface of the double-door 11 is fixedly connected with a handle 12; the double-door 11 and the handle 12 can facilitate the regular maintenance work of the components in the distribution box 1, and are beneficial to prolong the service life of the device; the four corners of the outer surface of the distribution box 1 are fixedly connected with positioning seats 13; the positioning seats 13 can be used to hang the distribution box 1 on a suitable position in an industrial plant, thereby facilitating the stable connection of multiple fans with the device.

[0035] In the embodiment, the industrial plant fan power distribution device can realize independent control and protection of multiple fans through the cooperation between the multiple fan control units 5, the overload protection unit 6, the short-circuit protection unit 7 and the maintenance switch unit 8, and the multiple units are modularly installed, which facilitates independent maintenance without the need for overall power-off; the cooperation between the main control board 2, the temperature sensor 3, the logic control board 601, the high-precision current transformer 602 and the temperature compensation chip 603 can realize dynamic overload protection, that is, when the high-precision current transformer 602 detects that the current exceeds the threshold, the logic control board 601 will slow down the corresponding fan; if the current returns to normal within a short time, the fan will return to normal work; if the current does not return to normal, the power supply of the corresponding AC contactor 502 will be cut off; the cooperation between the electronic fuse 701 and the magnetic latching circuit breaker 702 can realize fault isolation within milliseconds under the cooperation of multiple protection devices, which is more practical.

[0036] The working principle of the above embodiment is that first, the power module 9 is connected with the municipal power supply in the industrial plant, then the connecting heads of the plurality of fans are respectively inserted into the plurality of connecting interfaces 802, so that the fan inserted into the connecting interface 802 can be powered by the power module 9, then starting the air extractor 1001 can discharge the hot gas in the distribution box 1 to the outside, the heat dissipation fins 1002 arranged in cooperation can maintain the temperature in the distribution box 1 to an appropriate value, and the temperature in the distribution box 1 can be detected by the temperature sensor 3, and the detection data can be transmitted to the main control panel 2 for analysis and processing. The logic control panel 601 can receive the data collected by the main control panel 2, the high-precision current transformer 602 can monitor the current in real time, and the overload threshold value is dynamically adjusted in combination with the temperature sensor 3. If the current exceeds the limit, the frequency converter in the logic control panel 601 will control the corresponding fan to slow down. If the current returns to normal, the fan will resume normal operation. If the current cannot return to normal, the corresponding AC contactor 502 power supply will be directly cut off to achieve the effect of dynamic protection. At the same time, the device has an excellent short-circuit protection mechanism through the short-circuit protection unit 7 arranged, the electronic fuse 701 can suppress the transient current, and the magnetic latching circuit breaker 702 can completely break the fault loop to prevent cascading faults. When maintaining, the power supply of the corresponding fan can be physically cut off through the double-breakpoint rotary switch 801, which is convenient for independent maintenance.

[0037] It should be noted that, in the present document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises a... " does not, without more constraints, exclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0038] While embodiments of the present application have been shown and described with reference to the figures, it will be understood by those of ordinary skill in the art that various changes, modifications, replacements, and variations can be made thereto without departing from the principles and spirit of the application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An industrial plant fan power distribution device, comprising a distribution box (1) and multiple fan control units (5), overload protection units (6), short circuit protection units (7), and maintenance switch units (8) disposed inside the distribution box (1), characterized in that: Therefore, the main control board (2), temperature sensor (3), and connector (4) are fixedly connected inside the distribution box (1). The temperature sensor (3) and connector (4) are both electrically connected to the main control board (2). Multiple fan control units (5) are all electrically connected to the connector (4). Each fan control unit (5) includes a miniature circuit breaker (501) and an AC contactor (502) fixedly connected to the inner wall of the distribution box (1). The AC contactor (502) is electrically connected to the miniature circuit breaker (501). Multiple overload protection units (6) are electrically connected to multiple fan control units (5). Each overload protection unit (6) includes a logic control board (601) fixedly connected to the inner wall of the distribution box (1). A high-precision current transformer (602) and a temperature compensation chip (603) are provided. Both the high-precision current transformer (602) and the temperature compensation chip (603) are electrically connected to the logic control board (601). Multiple short-circuit protection units (7) are electrically connected to multiple overload protection units (6). Each short-circuit protection unit (7) includes an electronic fuse (701) and a magnetic latching circuit breaker (702) fixedly connected to the inner wall of the distribution box (1). The electronic fuse (701) is electrically connected to the magnetic latching circuit breaker (702). The maintenance switch unit (8) includes a double-break rotary switch (801) fixedly connected to the outer surface of the distribution box (1). The distribution box (1) is equipped with a heat dissipation assembly (10).

2. The power distribution device for industrial plant fans according to claim 1, characterized in that: The miniature circuit breaker (501) is electrically connected to the connector (4), the AC contactor (502) and the electronic fuse (701) are both electrically connected to the logic control board (601), and the magnetic latching circuit breaker (702) is electrically connected to the double-break rotary switch (801).

3. The power distribution device for industrial plant fans according to claim 2, characterized in that: The outer surface of the distribution box (1) is fixedly connected to a connection interface (802) and a fault indicator light (803). The double-break rotary switch (801) and the fault indicator light (803) are both electrically connected to the connection interface (802).

4. The power distribution device for industrial plant fans according to claim 1, characterized in that: The power distribution box (1) is fixedly connected to the inner wall of a power module (9), which is electrically connected to the main control board (2).

5. The power distribution device for industrial plant fans according to claim 1, characterized in that: The heat dissipation assembly (10) includes an exhaust fan (1001) embedded in the top of the distribution box (1), and heat dissipation fins (1002) are fixedly connected to both sides of the outer surface of the distribution box (1).

6. The power distribution device for industrial plant fans according to claim 1, characterized in that: The bottom of the distribution box (1) is equipped with an air inlet cover (1003), and a filter screen (1004) is fixedly connected to the bottom end of the air inlet cover (1003).

7. The power distribution device for industrial plant fans according to claim 1, characterized in that: The front of the distribution box (1) is equipped with a double door (11), and a handle (12) is fixedly connected to the outer surface of the double door (11).

8. The power distribution device for industrial plant fans according to claim 1, characterized in that: The distribution box (1) has a positioning seat (13) fixedly connected to each of the four corners of its outer surface.

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