CN116545219A

CN116545219A - Multiport power electronic transformer

Info

Publication number: CN116545219A
Application number: CN202310529572.8A
Authority: CN
Inventors: 马红梅; 薛伟宁; 马新宇
Original assignee: North China Institute of Science and Technology
Current assignee: North China Institute of Science and Technology
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-08-04

Abstract

The utility model discloses a multi-port power electronic transformer which comprises a base, a shell, bolts, connecting ports, heat dissipation holes, heat dissipation mechanisms and fire extinguishing mechanisms, wherein the upper end of the base is contacted with the shell, the bolts are movably connected in the base, the connecting ports are arranged on the shell and are contacted with the base, the heat dissipation holes are formed in the shell, the heat dissipation mechanisms are arranged on the shell, and the fire extinguishing mechanisms are arranged on the shell. The utility model relates to a multiport power electronic transformer, which has the function of rapidly radiating precise electrical components in the electronic transformer and can rapidly extinguish fire of the precise electrical components in the electronic transformer.

Description

Multiport power electronic transformer

Technical Field

The utility model belongs to the technical field of power electronic transformers, and particularly relates to a multi-port power electronic transformer.

Background

As is well known, a power electronic transformer is a power device that combines a power electronic conversion technology with a high-frequency power conversion technology to convert power of one power characteristic into power of another power characteristic, and is widely applied to a power system.

The utility model patent with the bulletin number of CN215344354U discloses a multi-port power electronic transformer, which comprises a multi-port power electronic transformer main body, wherein a mounting plate is fixed on the outer side of the multi-port power electronic transformer main body, connecting ports are arranged on two sides of the multi-port power electronic transformer main body, and a protection mechanism is arranged on the outer side of each connecting port in a matched manner; the device is provided with the protection mechanism, and the connecting plate can be attached to the outer side of the connecting port, so that the situation that dust is easily accumulated in the connecting port after the connecting port is exposed for a long time is avoided, and the normal use of equipment is ensured; the device is provided with the auxiliary mounting mechanism, when the multiport power electronic transformer main body is mounted, the support to the attaching plate and the mounting outer side structure of the multiport power electronic transformer main body can be enhanced, the stability and the looseness of the multiport power electronic transformer main body mounting structure are ensured, and the condition that the multiport power electronic transformer main body is easy to shake after being mounted is avoided.

However, the existing multi-port power electronic transformer has certain defects, firstly, a large number of precise electrical components are arranged in the existing multi-port power electronic transformer, a large amount of heat energy can be generated during the operation, and the heat dissipation effect of the multi-port power electronic transformer is weak because the heat dissipation is carried out by simply adopting the characteristic of natural ventilation;

secondly, after the existing multiport power electronic transformer runs for a long time, the problem of spontaneous combustion can be caused due to the influence of indirect factors such as aging and short circuit of a circuit, and further the expensive precision electric appliance element is burnt, so that certain economic loss is caused, subsequent operators are required to perform re-construction treatment, and certain manpower and material resources are consumed. Therefore, improvements are needed.

Disclosure of Invention

The present utility model aims to solve the above-mentioned problems and provide a multi-port power electronic transformer, which solves the above-mentioned problems in the background art.

In order to solve the problems, the utility model provides a technical scheme that:

the utility model provides a multiport power electronic transformer, includes base, casing, bolt, connection port, louvre, heat dissipation mechanism and fire extinguishing mechanism, the upper end contact of base has the casing, swing joint has the bolt in the base, be provided with the connection port on the casing, the connection port contacts with the base, the louvre has been seted up in the casing, be provided with heat dissipation mechanism on the casing, be provided with fire extinguishing mechanism on the casing.

Preferably, the heat dissipation mechanism comprises a mute fan, a first connecting cylinder, a first motor, a rotating disc, a rotating shaft, a connecting sleeve, a clamping hole, a push rod, a clamping ball, a first fixed plate, a first spring, a second connecting cylinder, a moving disc, a filter screen, a convex block, a second fixed plate, an elastic piece, a second motor and a striking ball, the mute fan is fixedly arranged in the shell, the first connecting cylinder is fixedly connected with the first motor, the first motor is fixedly arranged on the first connecting cylinder, an output shaft of the first motor is fixedly connected with the first connecting cylinder in a rotating manner, the first motor is fixedly connected with the rotating disc in a rotating manner, the rotating disc is fixedly connected with the first connecting cylinder in a rotating manner, the connecting sleeve is rotationally connected with the rotating shaft, the clamping hole is formed in the connecting sleeve, the push rod is fixedly connected with the clamping ball in a sliding manner in the rotating shaft, the first fixed plate is fixedly connected with the first motor in the rotating shaft, the first spring is fixedly connected with the first spring in the first connecting cylinder in a rotating manner, and the other end of the first spring is welded with the first spring in a rotating manner, and the first spring is prevented from being welded with a plurality of local air inlets, and the first motor is prevented from being changed in a high temperature, and the local air heater is welded and the other end of the first spring is prevented from being changed.

Preferably, the second connecting cylinder is fixedly connected to the shell, the second connecting cylinder is internally and slidably connected with the moving disc, the filter screen is fixedly connected to the moving disc, the protruding block is fixedly connected to the moving disc, the second fixing plate is fixedly connected to the second connecting cylinder, the elastic sheet is welded to the second fixing plate, the other end of the elastic sheet is welded to the moving disc, the second motor is fixedly installed on the second connecting cylinder, the second output shaft of the second motor is rotationally connected with the second connecting cylinder, the impact ball is fixedly connected to the second output shaft of the second motor, the filter screen can be pushed to continuously shake through the arrangement of the second motor, the impact ball and other structures, and impurities are cleaned.

Preferably, the plurality of clamping holes are formed, the plurality of clamping holes are distributed in an annular array on the connecting sleeve, and the clamping balls are convenient to clamp in a matching manner through the arrangement of the clamping holes.

Preferably, the whole of filter screen is circular, the filter screen is stainless steel wire woven molding, through the setting of filter screen, can filter impurity such as dust in the air, and stainless steel matter possesses good durability.

Preferably, the fire extinguishing mechanism comprises a moving plate, a plug, a second spring, an avoidance hole, a toothed plate, a guide rod, a third motor, a first gear, a fire extinguishing agent tank, a rotating pipe, a spray pipe, a second gear, a fourth motor, a third gear, a water pump, a liquid inlet pipe, a liquid outlet pipe and a smoke alarm, wherein the moving plate is connected to the shell in a sliding manner, the plug is connected to the sliding manner in the moving plate, the second spring is welded to the plug, the other end of the second spring is welded to the moving plate, the avoidance hole is formed in the shell, the avoidance hole is connected to the plug in a sliding manner, the toothed plate is fixedly connected to the moving plate, the toothed plate is connected to the shell in a sliding manner, the third motor is fixedly arranged on the shell, the third output shaft of the third motor is fixedly sleeved with the first gear, the first gear is meshed with the toothed plate, the heat dissipation hole can be subjected to sealing treatment through the arrangement of the plug, and then the air circulation is stopped, and the oxygen content in the multiport power electronic transformer is reduced.

Preferably, the fire extinguishing agent tank is fixedly connected to the shell, the rotating pipe is installed in the shell through a bearing, the spray pipe is fixedly connected to the rotating pipe, the gear II is fixedly sleeved on the outer side of the rotating pipe, the motor IV is fixedly installed in the shell, the gear III is fixedly sleeved on the outer side of the output shaft IV of the motor IV, the gear III is meshed with the gear II, the water pump is fixedly installed on the shell, the liquid inlet pipe is arranged on the water pump, the liquid outlet pipe is rotatably connected with the rotating pipe, the smoke alarm is fixedly installed on the shell, and the fire extinguishing agent can be rotatably sprayed through the arrangement of the motor IV, the spray pipe and other structures, so that the spraying effect of the fire extinguishing agent is improved.

Preferably, a guide rod is fixedly connected in the shell, the guide rod is in sliding connection with the toothed plate, and the toothed plate can be guided through the arrangement of the guide rod.

The beneficial effects of the utility model are as follows: the utility model relates to a multiport power electronic transformer, which has the function of fast radiating precision electrical components in the electronic transformer and can fast extinguish fire of the precision electrical components in the electronic transformer, and has the following beneficial effects compared with the traditional multiport power electronic transformer in specific use:

firstly, through setting up the structure such as cooling machanism, silence fan, connecting cylinder one, motor one, the rolling disc, the axis of rotation, the adapter sleeve, the card hole, the ejector pin, the card ball, fixed plate one, spring one, connecting cylinder two, remove the dish, the filter screen, the lug, through the setting of silence fan, can carry out the heat dissipation to the inside accurate electrical components of multiport power electronic transformer, under the effect of structure such as motor one, the rolling disc, can adjust the wind direction, avoid the problem of local high temperature, and under the effect of filter screen, can clear up impurity such as dust in the air, through the setting of structure such as motor two, hit the ball, can promote the filter screen to shake, and then clear up impurity, avoid the filter screen to block up and cause the poor problem of air circulation effect.

Secondly, through the structure such as fire extinguishing mechanism, movable plate, end cap, spring two, dodge hole, pinion rack, guide arm, motor three, gear one, fire extinguishing agent jar, rotation pipe, spray tube, through the setting of motor three, pinion rack etc. structure, can promote the end cap and remove, and then make the end cap seal the louvre to reduce the inside oxygen content of multiport power electronic transformer, and then improve the fire extinguishing effect, under the effect of motor four, rotation pipe, spray tube etc. structure, can rotate the spraying to the fire extinguishing agent, improve the fire extinguishing effect.

Drawings

For ease of illustration, the utility model is described in detail by the following detailed description and the accompanying drawings.

FIG. 1 is a perspective view of the overall structure of the present utility model;

FIG. 2 is a front cross-sectional view of FIG. 1 of the present utility model;

FIG. 3 is an enlarged view of the heat dissipating mechanism of FIG. 2 according to the present utility model;

FIG. 4 is an enlarged view of FIG. 3A in accordance with the present utility model;

FIG. 5 is an enlarged view of the mobile plate of FIG. 2 in accordance with the present utility model;

FIG. 6 is an enlarged view of FIG. 5B in accordance with the present utility model;

FIG. 7 is a side view of the gear of FIG. 5 in accordance with the present utility model;

fig. 8 is an enlarged view of the rotating tube of fig. 2 according to the present utility model.

In the figure: 1. a base; 2. a housing; 3. a bolt; 4. a connection port; 5. a heat radiation hole; 6. a heat dissipation mechanism; 7. a fire extinguishing mechanism; 61. a mute fan; 62. a first connecting cylinder; 63. a first motor; 64. a rotating disc; 65. a rotating shaft; 66. connecting sleeves; 67. a clamping hole; 68. a push rod; 69. ball clamping; 691. a first fixing plate; 692. a first spring; 693. a second connecting cylinder; 694. a moving tray; 695. a filter screen; 696. a bump; 697. a second fixing plate; 698. an elastic sheet; 699. a second motor; 6991. striking a ball; 71. a moving plate; 72. a plug; 73. a second spring; 74. avoidance holes; 75. a toothed plate; 751. a guide rod; 76. a third motor; 77. a first gear; 78. a fire extinguishing agent tank; 79. a rotary tube; 791. a spray pipe; 792. a second gear; 793. a fourth motor; 794. a third gear; 795. a water pump; 796. a liquid inlet pipe; 797. a liquid outlet pipe; 798. a smoke alarm.

Detailed Description

The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1-8, the present embodiment adopts the following technical scheme:

examples:

the utility model provides a multiport power electronic transformer, includes base 1, casing 2, bolt 3, connection port 4, louvre 5, cooling mechanism 6 and fire extinguishing mechanism 7, the upper end contact of base 1 has casing 2, swing joint has bolt 3 in the base 1, be provided with connection port 4 on the casing 2, connection port 4 and base 1 contact, the louvre 5 has been seted up in the casing 2, be provided with cooling mechanism 6 on the casing 2, be provided with fire extinguishing mechanism 7 on the casing 2.

The heat dissipation mechanism 6 comprises a mute fan 61, a first connecting cylinder 62, a first motor 63, a rotating disc 64, a rotating shaft 65, a connecting sleeve 66, a clamping hole 67, a push rod 68, a clamping ball 69, a first fixing plate 691, a first spring 692, a second connecting cylinder 693, a moving disc 694, a filter screen 695, a convex block 696, a second fixing plate 697, an elastic sheet 698, a second motor 699 and an impact ball 6991, the mute fan 61 is fixedly arranged in the shell 2, the first connecting cylinder 62 is fixedly connected in the shell 2, the first motor 63 is fixedly arranged on the first connecting cylinder 62, the first output shaft of the first motor 63 is in rotating connection with the first connecting cylinder 62, the first output shaft of the first motor 63 is fixedly connected with the rotating disc 64, the rotating disc 64 is in rotating connection with the first connecting cylinder 62, the rotating disc 64 is fixedly connected with the rotating disc 64, the rotating shaft 65 is in rotating connection with the first connecting cylinder 62, the connecting sleeve 66 is in rotating connection with the rotating shaft 65, the inner connecting sleeve 66 is fixedly arranged in the connecting sleeve 66, the first connecting sleeve 6967 is in sliding connection with the first spring 692, the second connecting cylinder 68 is in the rotating connection with the first connecting cylinder 62, the first motor 6968 is in sliding connection with the first connecting sleeve 68, the first motor 692 is in the sliding connection with the first connecting cylinder 64 is in the sliding connection with the first connecting sleeve 64, and the first rotating shaft is in the first connecting cylinder is in the sliding connection with the first connecting cylinder 64, the first rotating connection is in the sliding connection with the first rotating hole is in the first rotating connection with the first rotating shaft 64.

The shell 2 is fixedly connected with a second connecting cylinder 693, a moving disc 694 is slidably connected in the second connecting cylinder 693, a filter screen 695 is fixedly connected in the moving disc 694, a protruding block 696 is fixedly connected on the moving disc 694, a second fixing plate 697 is fixedly connected on the second connecting cylinder 693, an elastic piece 698 is welded on the second fixing plate 697, the other end of the elastic piece 698 is welded with the moving disc 694, a second motor 699 is fixedly installed on the second connecting cylinder 693, a second output shaft of the second motor 699 is rotationally connected with the second connecting cylinder 693, an impact ball 6991 is fixedly connected on the second output shaft of the second motor 699, and the filter screen 695 can be pushed to continuously shake through the arrangement of the second motor 699, the impact ball 6991 and other structures, so that impurities can be cleaned.

Wherein, the card hole 67 is provided with a plurality of, and a plurality of card hole 67 is annular array on adapter sleeve 66 and arranges, through the setting of card hole 67, is convenient for cooperate card ball 69 to carry out the joint and use.

The filter screen 695 is circular, the filter screen 695 is formed by weaving stainless steel wires, impurities such as dust in air can be filtered through the arrangement of the filter screen 695, and stainless steel has good durability.

The fire extinguishing mechanism 7 comprises a moving plate 71, a plug 72, a second spring 73, an avoidance hole 74, a toothed plate 75, a guide rod 751, a third motor 76, a first gear 77, a fire extinguishing agent tank 78, a rotating pipe 79, a spray pipe 791, a second gear 792, a fourth motor 793, a third gear 794, a water pump 795, a liquid inlet pipe 796, a liquid outlet pipe 797 and a smoke alarm 798, wherein the moving plate 71 is connected to the shell 2 in a sliding manner, the plug 72 is connected to the moving plate 71 in a sliding manner, the second spring 73 is welded to the plug 72, the other end of the second spring 73 is welded to the moving plate 71, the avoidance hole 74 is formed in the shell 2 and is connected with the plug 72 in a sliding manner, the toothed plate 75 is fixedly connected to the shell 2 in a sliding manner, the third motor 76 is fixedly arranged on the shell 2, the first gear 77 is meshed with the toothed plate 75 on the outer side of the output shaft of the third motor 76, the inside of the electronic device is prevented from being subjected to air ventilation through the arrangement of the plug 72, and the inside of the multi-port electronic air ventilation device is further prevented from being sealed.

The fire extinguishing agent tank 78 is fixedly connected to the shell 2, the rotating pipe 79 is installed in the shell 2 through a bearing, the spray pipe 791 is fixedly connected to the rotating pipe 79, the gear two 792 is fixedly sleeved on the outer side of the rotating pipe 79, the motor four 793 is fixedly installed in the shell 2, the gear three 794 is fixedly sleeved on the outer side of an output shaft four 793 of the motor, the gear three 794 is meshed with the gear two 792, the water pump 795 is fixedly installed on the shell 2, the liquid inlet pipe 796 is arranged on the water pump 795, the liquid outlet pipe 797 is rotatably connected with the rotating pipe 79, the smoke alarm 798 is fixedly installed on the shell 2, and the fire extinguishing agent can be sprayed through the arrangement of the structure of the motor four 793, the spray pipe 791 and the like, so that the fire extinguishing agent can be sprayed.

Wherein, a guide bar 751 is fixedly connected in the shell 2, the guide bar 751 is slidingly connected with the toothed plate 75, and the toothed plate 75 can be guided by the arrangement of the guide bar 751.

The use state of the utility model is as follows: when the multi-port power electronic transformer is used, the mute fan 61 is started to blow air in the shell 2 so as to accelerate the flowing effect of the air, and then the precise electric appliance element in the multi-port power electronic transformer is subjected to heat dissipation treatment, dust and other impurities in the air can be filtered under the action of the filter screen 695, the motor II 699 is started to drive the impact ball 6991 to rotate, when the impact ball 6991 extrudes the bump 696, the bump 696 is forced to push the movable disk 694 to move and drive the filter screen 695 to move, under the action of the fixed plate II 697, the elastic piece 698 is forced to deform, when the impact ball 6991 is separated from the bump 696, the elastic piece 698 is restored to deform so as to push the movable disk 694 to move and drive the filter screen 695 to move, and finally the filter screen 695 is continuously vibrated to clean the impurities attached to the filter screen 695, and the blocking problem of the filter screen 695 is avoided;

the first motor 63 is started to drive the rotating disc 64 to rotate, the rotating disc 64 is stressed to drive the rotating shaft 65 to rotate, the angle of the rotating disc 64 is adjusted, the clamping holes 67 are stressed to squeeze the clamping balls 69, the clamping balls 69 are stressed to push the ejector rods 68 to move, under the action of the first fixing plate 691, the first springs 692 are stressed to deform, finally the clamping balls 69 are separated from the clamping holes 67, under the action of force, the clamping balls 69 slide along the inner wall of the connecting sleeve 66, when the clamping balls 69 slide into the position of the next clamping holes 67, the first springs 692 recover to deform so as to push the clamping balls 69 to be inserted into the clamping holes 67, limit the rotating shaft 65, and further, the rotating disc 64 is precisely controlled, the effect of controlling wind direction is achieved, and the problem of local high temperature is avoided;

when self-ignition occurs in the multiport power electronic transformer and smoke is sensed by the smoke alarm 798, at the moment, the motor III 76 drives the gear I77 to rotate, the toothed plate 75 is pushed to move under the meshing relationship, the plug 72 is driven to move, the avoidance hole 74 is forced to extrude the plug 72, the plug 72 is forced to slide, the spring II 73 is forced to deform, finally the plug 72 is separated from the avoidance hole 74, the plug 72 slides along the surface of the shell 2 under the action of force, and when the plug 72 slides into the heat dissipation hole 5, the spring II 73 is restored to deform so as to push the plug 72 to be inserted into the heat dissipation hole 5, and the heat dissipation hole 5 is sealed;

the first motor 63 drives the rotating disc 64 to rotate, and the same principle can be achieved, finally the rotating disc 64 seals the first connecting cylinder 62 to prevent air circulation in the multi-port power electronic transformer, further reduce oxygen content in the multi-port power electronic transformer, eradicate oxygen required by open fire, the water pump 795 operates, fire extinguishing agent in the fire extinguishing agent tank 78 can be pumped into the rotating tube 79 under the action of the liquid inlet tube 796 and the liquid outlet tube 797, the fourth motor 793 drives the third gear 794 to rotate, and the third gear 794 drives the second gear 792 to rotate under the meshing relationship so as to drive the rotating tube 79 to rotate, further drive the spray tube 791 to rotate to spray the fire extinguishing agent, so that a good fire extinguishing effect is achieved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims

1. The utility model provides a multiport power electronic transformer, includes base (1), casing (2), bolt (3), connection port (4), louvre (5), cooling mechanism (6) and fire extinguishing mechanism (7), its characterized in that: the novel fire extinguishing device is characterized in that a shell (2) is contacted with the upper end of the base (1), a bolt (3) is movably connected in the base (1), a connecting port (4) is arranged on the shell (2), the connecting port (4) is contacted with the base (1), a heat radiating hole (5) is formed in the shell (2), a heat radiating mechanism (6) is arranged on the shell (2), and a fire extinguishing mechanism (7) is arranged on the shell (2).

2. A multiport power electronic transformer according to claim 1, wherein: the heat dissipation mechanism (6) comprises a mute fan (61), a first connecting cylinder (62), a first motor (63), a rotating disc (64), a rotating shaft (65), a connecting sleeve (66), a clamping hole (67), a push rod (68), a clamping ball (69), a first fixing plate (691), a first spring (692), a second connecting cylinder (693), a moving disc (694), a filter screen (695), a convex block (696), a second fixing plate (697), an elastic sheet (698), a second motor (699) and an impact ball (6991), the mute fan (61) is fixedly arranged in the shell (2), the first connecting cylinder (62) is fixedly connected in the shell (2), the first motor (63) is fixedly arranged on the connecting cylinder (62), the first output shaft of the first motor (63) is rotationally connected with the first connecting cylinder (62), the rotating disc (64) is rotationally connected with the first connecting cylinder (62), the rotating shaft (65) is fixedly connected with the rotating shaft (65), the first connecting sleeve (66) is rotationally connected with the first connecting cylinder (62), the novel clamping device is characterized in that a clamping hole (67) is formed in the connecting sleeve (66), a push rod (68) is connected in the rotating shaft (65) in a sliding mode, a clamping ball (69) is fixedly connected to the push rod (68), the clamping ball (69) is connected with the clamping hole (67) in a sliding mode, a first fixing plate (691) is fixedly connected to the rotating shaft (65), a first spring (692) is welded to the first fixing plate (691), and the other end of the first spring (692) is welded to the push rod (68).

3. A multiport power electronic transformer according to claim 2, wherein: fixedly connected with connecting cylinder two (693) on casing (2), sliding connection has movable tray (694) in connecting cylinder two (693), fixedly connected with filter screen (695) in movable tray (694), fixedly connected with lug (696) on movable tray (694), fixedly connected with fixed plate two (697) on connecting cylinder two (693), the welding has elastic piece (698) on fixed plate two (697), the other end and the movable tray (694) welding of elastic piece (698), fixedly mounted has motor two (699) on connecting cylinder two (693), output shaft and connecting cylinder two (693) rotation connection of motor two (699), fixedly connected with striking ball (6991) on the output shaft of motor two (699).

4. A multiport power electronic transformer according to claim 2, wherein: the plurality of clamping holes (67) are formed, and the plurality of clamping holes (67) are distributed on the connecting sleeve (66) in an annular array.

5. A multiport power electronic transformer according to claim 3, wherein: the whole of the filter screen (695) is round, and the filter screen (695) is formed by knitting stainless steel wires.

6. A multiport power electronic transformer according to claim 1, wherein: the fire extinguishing mechanism (7) comprises a moving plate (71), a plug (72), a second spring (73), an avoidance hole (74), a toothed plate (75), a guide rod (751), a third motor (76), a first gear (77), a fire extinguishing agent tank (78), a rotating pipe (79), a spray pipe (791), a second gear (792), a fourth motor (793), a third gear (794), a water pump (795), a liquid inlet pipe (796), a liquid outlet pipe (797) and a smoke alarm (798), the moving plate (71) is slidingly connected on the shell (2), the plug (72) is slidingly connected on the moving plate (71), the second spring (73) is welded on the plug (72), the other end of the second spring (73) is welded with the moving plate (71), the avoidance hole (74) is slidingly connected with the plug (72), the toothed plate (75) is fixedly connected on the moving plate (71), the toothed plate (75) is slidingly connected with the shell (2), the third motor (76) is fixedly sleeved on the output shaft (76), the first gear (77) is meshed with the toothed plate (75).

7. A multi-port power electronic transformer as defined in claim 6, wherein: the fire extinguishing agent tank is fixedly connected with fire extinguishing agent tank (78) on casing (2), install rotation pipe (79) through the bearing in casing (2), fixedly connected with spray tube (791) in rotation pipe (79), gear two (792) have been cup jointed in the outside of rotation pipe (79) fixedly, motor four (793) have been installed to casing (2) internal fixation, gear three (794) have been cup jointed in the four outsides of the output shaft of motor four (793) fixedly, gear three (794) and gear two (792) meshing, fixedly mounted has water pump (795) on casing (2), be provided with feed liquor pipe (796) on water pump (795), be provided with drain pipe (797) on water pump (795), drain pipe (797) are connected with rotation pipe (79) rotation, fixedly mounted has smoke alarm (798) on casing (2).

8. A multi-port power electronic transformer as defined in claim 6, wherein: a guide rod (751) is fixedly connected in the shell (2), and the guide rod (751) is in sliding connection with the toothed plate (75).