An intensive busway with a flame-retardant structure

Abstract

The present invention discloses a type of compact busbar trunking with a flame-retardant structure, which relates to the technical field of compact busbar trunkings. It includes a housing. Square grooves are provided on both sides of the housing. A rectangular plate is fixedly connected inside the square groove. A product groove for accumulating impurities is provided on the side of the rectangular plate close to the outside of the housing. A sliding groove is provided on the side of the rectangular plate close to the inside of the housing. A number of filter holes are provided on the inner wall of the product groove. The product groove communicates with the sliding groove through the filter holes. Air inlet grooves are penetrated through the upper and lower ends of the sliding groove. The sliding groove communicates with the housing through the air inlet grooves. A first baffle for covering the filter holes is slidably arranged inside the sliding groove. For this type of compact busbar trunking with a flame-retardant structure, by setting structures such as the product groove, the sliding groove, the square box, and the first baffle, the effects of filtering and automatic cleaning are achieved simultaneously, and the impurities will be directly sucked away to avoid clogging the filter holes again.

Description

Technical Field

[0001] The present invention relates to the technical field of compact busbars, and particularly to a compact busbar with a flame-retardant structure. Background Art

[0002] With the continuous advancement of the national industrial development, more and more large-scale modern projects, super high-rise buildings, and large-scale equipment have increased their electricity demands. As a power transmission conductor, traditional cables have been difficult to meet the usage requirements. Especially in multi-line construction, the parallel use of multiple cables causes great obstacles to connection and use, seriously affecting the project progress. As an important line connection device, the compact busbar can meet the requirements of the above-mentioned large-scale projects for power transmission and distribution.

[0003] Since the compact busbar densely encloses a conductor group composed of multiple busbars in a housing, a large amount of heat will be generated under the energized state, and the existing compact busbars are relatively closed, making it difficult for the heat generated by the conductor group to dissipate outward in time, posing a relatively high fire safety hazard.

[0004] For example, in the patent named Compact Busbar (patent application number: CN201911071134.1), a compact busbar is disclosed. By rotating the left motor and the right motor to drive the rotation of multiple groups of left fan blades, multiple groups of right fan blades, a left brush group, and a right brush group, forced convection occurs at the left heat dissipation teeth and the right heat dissipation teeth, improving the heat dissipation effect; and by setting a left filter screen and a right filter screen, foreign impurities from the outside are reduced from entering the left chamber and the right chamber. At the same time, the left brush group and the right brush group clean the impurities attached to the left filter screen and the right filter screen, but the cleaned impurities still stay near the filter screen and will reattach to the filter screen under the influence of suction, causing the filter screen to be blocked and affecting the ventilation and heat dissipation efficiency.

[0005] Therefore, it is very necessary to propose a compact busbar with a flame-retardant structure to solve the above problems. Summary of the Invention

[0006] The purpose of the present invention is to provide a compact busbar with a flame-retardant structure to solve the problem that the cleaned impurities still stay near the filter screen and will reattach to the filter screen under the influence of suction, causing the filter screen to be blocked and affecting the ventilation and heat dissipation efficiency.

[0007] To achieve the above object, the present invention provides the following technical solution: A type of enclosed busway with a flame-retardant structure, including a housing. Square grooves are provided on both sides of the housing. A rectangular plate is fixedly connected inside the square groove. A sedimentation groove for impurity accumulation is provided on the side of the rectangular plate close to the outside of the housing. A sliding groove is provided on the side of the rectangular plate close to the inside of the housing. A number of filter holes are provided on the inner wall of the sedimentation groove. The sedimentation groove is communicated with the sliding groove through the filter holes. Air inlet grooves are provided through the upper and lower ends of the sliding groove. The sliding groove is communicated with the housing through the air inlet grooves. A first baffle for covering the filter holes is slidably arranged inside the sliding groove. Square boxes for sucking impurities inside the sedimentation groove are provided on both sides of the housing. The square boxes are slidably attached to the corresponding rectangular plates, and the length and width of the inner wall of the square boxes are the same as those of the sedimentation groove respectively.

[0008] Preferably, a plurality of sedimentation grooves and sliding grooves are provided, and the plurality of sedimentation grooves and the plurality of sliding grooves are distributed in one-to-one correspondence.

[0009] Preferably, a through groove is provided through the first baffle. A second magnet is fixedly connected inside the through groove. A first magnet is fixedly connected to the inner wall of the square box. The first magnet and the second magnet are attracted and matched. A support block is fixedly connected to the inner wall of the sliding groove. The support block is located on the side of the first baffle facing away from the sedimentation groove. A first spring is fixedly connected between the support block and the first baffle.

[0010] Preferably, a reagent box is fixedly connected inside the square groove. A second baffle is slidably arranged inside the reagent box. The second baffle divides the interior of the reagent box into a material bin and a sliding bin, and the material bin is located at one end of the reagent box close to the inside of the housing. Fire extinguishing powder is filled in the material bin. A discharge groove is provided on the reagent box. The sliding bin is communicated with the housing through the discharge groove.

[0011] Preferably, a second spring is provided inside the material bin. One end of the second spring is fixedly connected to the second baffle, and the other end of the second spring is fixedly connected to the inner wall of the material bin. A third magnet is fixedly connected to the side of the second baffle close to the sliding bin. The third magnet and the first magnet are attracted and matched.

[0012] Preferably, an electromagnet is fixedly connected to the support block.

[0013] Preferably, a second U-shaped box is slidably arranged outside the housing. The second U-shaped box is communicated between the two square boxes. A convex block is fixedly connected to the outer wall of the housing. An electric push rod is fixedly connected to the convex block. The second U-shaped box is fixedly connected to the telescopic end of the electric push rod.

[0014] Preferably, both sides of the shell are provided with air outlet grooves, the square groove and the air outlet groove are respectively located at two ends of the shell, and a first U-shaped box is fixedly connected to the outer wall of the shell, and the first U-shaped box is connected between the two air outlet grooves.

[0015] Preferably, a suction boosting assembly is arranged between the first U-shaped box and the second U-shaped box, and the suction boosting assembly comprises a first air pipe, a second air pipe, a three-way joint, a third air pipe, a boosting box, a first solenoid valve, an air pump and a second solenoid valve. The three-way joint is connected between the first air pipe and the second air pipe, one end of the first air pipe away from the three-way joint is connected to the second U-shaped box, one end of the second air pipe away from the three-way joint is connected to the first U-shaped box, the boosting box and the air pump are both fixedly connected to the outer wall of the shell, the air inlet end of the air pump is connected to the boosting box, one end of the third air pipe is connected to the three-way joint, and the other end of the third air pipe is connected to the boosting box, the first solenoid valve is fixedly installed on the second air pipe, and the second solenoid valve is fixedly installed on the first air pipe.

[0016] Preferably, the shell is provided with a plurality of evenly distributed conductive copper bars, the outer portion of the conductive copper bars is provided with an insulating fireproof sleeve, the upper and lower ends of the shell are fixedly connected with flame-retardant blocks, and the insulating fireproof sleeve is fixedly connected between the upper and lower flame-retardant blocks.

[0017] Technical effects and advantages of the present invention:

[0018] The present invention achieves the effects of filtering and automatic cleaning at the same time by arranging structures such as the accumulation groove, the slide groove, the square box and the first baffle, and the impurities are directly sucked away to avoid clogging of the filter holes again;

[0019] Since the square box only covers and blocks a single storage slot, the storage slots at other positions remain open, and the external air can enter the interior of the shell through the corresponding storage slots, filter holes, slide slots and air inlet slots in sequence, without affecting the cooling and heat dissipation of the intensive bus duct;

[0020] The first baffle covers the filter hole to improve the effect of impurity suction and cleaning, while preventing the suction from affecting the heat dissipation airflow inside the shell;

[0021] The air inlet grooves are arranged at the upper and lower ends of the slideway, so that when the gas enters the interior of the shell, it will not directly act on the conductive copper busbar and other structures, thus avoiding deformation and wear caused by long-term wind action;

[0022] By arranging the first U-shaped box, the second U-shaped box and the suction and pressurization assembly and other structures, the effects of heat dissipation and impurity cleaning are achieved at the same time;

[0023] By setting up structures such as a booster box, a first solenoid valve, and a second solenoid valve, the suction force is periodically increased, the flow rate of gas inside the housing is accelerated, the heat dissipation effect is improved, and at the same time, the suction force on the accumulation groove is increased to achieve efficient cleaning;

[0024] When a sudden spontaneous combustion occurs inside the housing, the first baffle covers the filter holes, and external gas cannot enter the inside of the housing. The air pump sucks the inside of the housing through structures such as the first U-shaped box. As the air pressure decreases, the oxygen content relatively decreases, controlling the fire;

[0025] By setting up structures such as a reagent box and a second baffle, when a sudden spontaneous combustion occurs inside the housing, the fire extinguishing powder enters the inside of the housing from the discharge chute and covers structures such as the conductive copper bar to achieve internal fire extinguishing and improve the safety of using the compact busbar; BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural view of one perspective of the compact busbar with a flame-retardant structure according to the present invention.

[0027] Figure 2 It is a schematic structural view of another perspective of the compact busbar with a flame-retardant structure according to the present invention.

[0028] Figure 3 For the present invention Figure 2 The enlarged schematic view of the structure at A in the figure.

[0029] Figure 4 For the present invention Figure 2 The enlarged schematic view of the structure at B in the figure.

[0030] Figure 5 It is a schematic view of the housing and the conductive copper bar structure of the present invention.

[0031] Figure 6 It is a schematic view of the housing and the air outlet groove structure of the present invention.

[0032] Figure 7 For the present invention Figure 6 The enlarged schematic view of the structure at C in the figure.

[0033] Figure 8 For the present invention Figure 6 The enlarged schematic view of the structure at D in the figure.

[0034] Figure 9 It is a schematic view of the housing and the square box structure of the present invention.

[0035] Figure 10 For the present invention Figure 9 The enlarged schematic view of the structure at E in the figure.

[0036] In the figure: 1, housing; 2, square groove; 3, rectangular plate; 4, product groove; 5, sliding groove; 6, square box; 7, filter hole; 8, first baffle; 9, support block; 10, first spring; 11, air inlet groove; 12, first magnet; 13, second magnet; 14, electromagnet; 15, agent box; 16, second baffle; 17, second spring; 18, discharge chute; 19, third magnet; 20, convex block; 21, first U-shaped box; 22, second U-shaped box; 23, first air pipe; 24, second air pipe; 25, three-way joint; 26, third air pipe; 27, booster box; 28, first solenoid valve; 29, air pump; 30, electric push rod; 31, conductive copper bar; 32, insulating fireproof sleeve; 33, flame retardant block; 34, silo; 35, sliding bin; 36, air outlet groove; 37, second solenoid valve. Detailed implementation mode

[0037] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0038] The present invention provides a kind of Figures 1 to 10 dense busbar with a flame retardant structure as shown in the figure, including a housing 1, on which a plurality of evenly distributed conductive copper bars 31 are penetrated. An insulating fireproof sleeve 32 is sleeved outside the conductive copper bar 31. The insulating fireproof sleeve 32 can be used but is not limited to polyimide insulating materials, and has characteristics such as high temperature resistance, heat shock resistance, and flame retardancy. Flame retardant blocks 33 are fixedly connected to both the upper and lower ends inside the housing 1. The flame retardant blocks 33 can be used but are not limited to heat-conducting ceramic plates, and have characteristics such as flame retardancy, insulation, and heat conduction. The insulating fireproof sleeve 32 is fixedly connected between the upper and lower two flame retardant blocks 33. The flame retardant blocks 33 can take away the heat generated when the conductive copper bar 31 works. Therefore, when the gas flows inside the housing 1, it will take away the heat of the flame retardant blocks 33. During specific use, heat dissipation fins and other structures can also be set to cooperate with the flame retardant blocks 33 to improve the heat dissipation efficiency. The heat dissipation fins and their working principles are all common existing technologies and will not be elaborated here.

[0039] Both sides of the housing 1 are provided with square grooves 2. Inside the square grooves 2, rectangular plates 3 are fixedly connected. On the side of the rectangular plate 3 close to the outside of the housing 1, a storage groove 4 for accumulating impurities is provided, which is convenient for subsequent cleaning. On the side of the rectangular plate 3 close to the inside of the housing 1, a sliding groove 5 is provided. Both the storage groove 4 and the sliding groove 5 are provided in multiple numbers, and the multiple storage grooves 4 and the multiple sliding grooves 5 are distributed in one-to-one correspondence. A number of filter holes 7 are provided on the inner wall of the storage groove 4. The storage groove 4 communicates with the sliding groove 5 through the filter holes 7. Air inlet grooves 11 are provided through both the upper and lower ends of the sliding groove 5. The sliding groove 5 communicates with the housing 1 through the air inlet grooves 11. Air outlet grooves 36 are provided on both sides of the housing 1. The square groove 2 and the air outlet groove 36 are located at both ends of the housing 1 respectively, and ventilation and heat dissipation are carried out from both sides of the housing 1. External gas can enter the inside of the housing 1 in sequence through the storage groove 4, the filter holes 7, the sliding groove 5 and the air inlet grooves 11, and is discharged through the air outlet grooves 36, so as to realize the gas circulation inside the housing 1, take away the heat generated by structures such as the conductive copper bar 31, and thus realize the cooling and heat dissipation of the compact busbar, while impurities will accumulate inside the storage groove 4.

[0040] Moreover, the air inlet grooves 11 are provided at the upper and lower ends of the sliding groove 5, so that when the gas enters the inside of the housing 1, it will not directly act on structures such as the conductive copper bar 31, avoiding deformation and wear caused by long-term wind force.

[0041] Considering that the impurities accumulated inside the storage groove 4 will cause blockage of the filter holes 7 and affect the air inlet efficiency, in order to realize the suction and cleaning of the impurities, a first baffle 8 for covering the filter holes 7 is slidably arranged inside the sliding groove 5. Square boxes 6 for sucking the impurities inside the storage groove 4 are provided on both sides of the housing 1. The square boxes 6 are slidably attached to the corresponding rectangular plates 3, and the length and width of the inner wall of the square box 6 are respectively the same as the length and width of the storage groove 4, so that the square box 6 can cover the storage groove 4.

[0042] Specifically, when the square box 6 corresponds to one of the sliding grooves 5, since the length and width of the inner wall of the square box 6 are respectively the same as the length and width of the storage groove 4, the storage groove 4 can be covered. The first baffle 8 slides towards the square box 6 and fits on the inner wall of the sliding groove 5 to complete the covering of the filter holes 7 (refer to Figure 8 the right side position). At this time, a cleaning space is formed between the storage groove 4 and the square box 6, and the impurities accumulated inside the storage groove 4 are sucked and cleaned through the square box 6, achieving the effect of automatic cleaning; and the impurities will be directly sucked away and will not stay near the storage groove 4.

[0043] The present invention simultaneously achieves the effects of filtering and automatic cleaning by arranging structures such as the storage groove 4, the sliding groove 5, the square box 6 and the first baffle 8, and the impurities will be directly sucked away, avoiding blockage of the filter holes 7 again.

[0044] Moreover, the first baffle 8 covers the filter holes 7, improving the effect of sucking and cleaning the impurities, and at the same time preventing the suction from affecting the heat dissipation air flow inside the housing 1.

[0045] Since the square box 6 only covers and blocks a single storage slot 4, the storage slots 4 at other positions remain open, and external air can enter the interior of the shell 1 through the corresponding storage slots 4, filter holes 7, slide slots 5 and air inlet slots 11 in sequence, without affecting the cooling and heat dissipation of the intensive bus duct.

[0046] After cleaning, when the square box 6 is staggered from the slide groove 5, the first baffle plate 8 slides away from the square box 6, and the air inlet groove 11 is located between the first baffle plate 8 and the accumulation groove 4 (refer to Figure 8 Left side position), restore the air intake state.

[0047] After a single storage slot 4 is cleaned, the square box 6 can be controlled to correspond to the next chute 5, and the cleaning of all storage slots 4 is completed.

[0048] When impurities are attached to the position between two adjacent accumulation grooves 4, the square box 6 can push and scrape them, and the impurities will enter the interior of the accumulation groove 4 under the action of suction and then be cleaned.

[0049] It should be noted that microholes (not shown in the figure) can be set at the edge of the square box 6 or the storage groove 4, so that external gas can be replenished into the space between the square box 6 and the storage groove 4 during the impurity suction process to ensure the suction effect. Other methods can also be used and can be adjusted according to specific usage conditions.

[0050] In order to control the movement of the square box 6, a second U-shaped box 22 is slidably provided on the outside of the shell 1. The second U-shaped box 22 is connected between the two square boxes 6. A protrusion 20 is fixedly connected to the outer wall of the shell 1, and an electric push rod 30 is fixedly connected to the protrusion 20. The second U-shaped box 22 is fixedly connected to the telescopic end of the electric push rod 30.

[0051] In order to control the movement of the first baffle 8, a through slot is formed on the first baffle 8, and a second magnet 13 is fixedly connected inside the through slot. A first magnet 12 is fixedly connected to the inner wall of the square box 6. The first magnet 12 and the second magnet 13 attract each other, and the magnetic properties of the first magnet 12 and the second magnet 13 on the side close to each other are opposite. A support block 9 is fixedly connected to the inner wall of the slide 5, and the support block 9 is located on the side of the first baffle 8 facing away from the storage tank 4. In order to facilitate the reset of the first baffle 8, a first spring 10 is fixedly connected between the support block 9 and the first baffle 8, and the attraction force between the first magnet 12 and the second magnet 13 is greater than the elastic support force of the first spring 10.

[0052] When the square box 6 corresponds to one of the storage slots 4, since the first magnet 12 and the second magnet 13 are attracted to each other, and the attraction force is greater than the elastic support force of the first spring 10, under the action of the attraction force, the first baffle 8 will overcome the elastic support force of the first spring 10 and move toward the storage slot 4, and fit on the inner wall of the slide slot 5 to cover the filter hole 7 (refer to Figure 8On the right side), a cleaning space is formed between the product groove 4 and the square box 6 at this time.

[0053] Furthermore, after the cleaning is completed, when the square box 6 is staggered from the sliding groove 5, the reset elastic force of the first spring 10 causes the first baffle 8 to reset.

[0054] And when the external gas enters the interior of the housing 1 in sequence through the product groove 4, the filter holes 7, the sliding groove 5, and the air inlet groove 11, when the air flow passes through the air inlet groove 11 from the sliding groove 5, it needs to change the route, and the air flow acts on the first baffle 8 due to inertia. The provided first spring 10 can perform force unloading and buffering to reduce the wear of the first baffle 8.

[0055] A first U-shaped box 21 is fixedly connected to the outer wall of the housing 1, and the first U-shaped box 21 communicates between the two air outlet grooves 36.

[0056] A suction and pressurization assembly is provided between the first U-shaped box 21 and the second U-shaped box 22. The suction and pressurization assembly includes a first air pipe 23, a second air pipe 24, a three-way joint 25, a third air pipe 26, a pressurization box 27, a first solenoid valve 28, an air pump 29, and a second solenoid valve 37. The three-way joint 25 communicates between the first air pipe 23 and the second air pipe 24. One end of the first air pipe 23 away from the three-way joint 25 communicates with the second U-shaped box 22. The first air pipe 23 uses an elastic telescopic pipe, which does not affect the movement of the second U-shaped box 22. One end of the second air pipe 24 away from the three-way joint 25 communicates with the first U-shaped box 21. The pressurization box 27 and the air pump 29 are both fixedly connected to the outer wall of the housing 1. The air inlet end of the air pump 29 communicates with the pressurization box 27. One end of the third air pipe 26 communicates with the three-way joint 25, and the other end of the third air pipe 26 communicates with the pressurization box 27. The first solenoid valve 28 is fixedly installed on the second air pipe 24, and the second solenoid valve 37 is fixedly installed on the first air pipe 23. Specifically in use, a filtering device (not shown in the figure) can be provided on the first air pipe 23. The filtering device includes structures such as a filtering box and a filter net, which can filter the sucked impurities. The filtering device is a common existing technology and will not be elaborated here.

[0057] During operation, the air pump 29 sucks the interior of the housing 1 through structures such as the first U-shaped box 21. The external gas enters the interior of the housing 1 in sequence through the product groove 4, the filter holes 7, the sliding groove 5, and the air inlet groove 11, and is discharged from the air outlet groove 36, thereby realizing the gas circulation inside the housing 1, taking away the heat generated by structures such as the conductive copper bar 31, and thus realizing the cooling and heat dissipation of the compact busbar.

[0058] And a semiconductor refrigeration sheet and other structures can be provided at the rectangular plate 3 to cool the gas entering the interior of the housing 1 and improve the heat dissipation effect, which can be adjusted according to specific usage conditions.

[0059] By setting up structures such as the first U-shaped box 21, the second U-shaped box 22 and the suction booster assembly, the effects of heat dissipation and impurity cleaning are achieved simultaneously.

[0060] During the heat dissipation process, the second solenoid valve 37 is closed, and the first solenoid valve 28 is controlled to switch between open and closed states. When the first solenoid valve 28 is in the closed state, the air pump 29 sucks the booster box 27 into a vacuum state; then the first solenoid valve 28 is opened. At this time, there is a large pressure difference between the booster box 27 and the product groove 4, and with the suction cooperation of the air pump 29, a large suction force will be generated, accelerating the flow rate of the gas inside the housing 1 and improving the heat dissipation effect.

[0061] Repeat the above steps to periodically increase the suction force and achieve efficient heat dissipation.

[0062] Furthermore, structures such as a pressure sensor and a controller can be set on the booster box 27 to monitor the air pressure state and switch the open and closed states of the first solenoid valve 28 through the controller.

[0063] When impurities need to be sucked, the second solenoid valve 37 and the first solenoid valve 28 can be controlled to synchronously switch between open and closed states, thereby periodically increasing the suction force of the impurities and achieving efficient cleaning.

[0064] By setting up structures such as the booster box 27, the first solenoid valve 28 and the second solenoid valve 37, the suction force is periodically increased, the flow rate of the gas inside the housing 1 is accelerated, the heat dissipation effect is improved, and at the same time, the suction force on the product groove 4 is increased to achieve efficient cleaning.

[0065] Considering the high fire safety hazards in the dense busbar trunking, to improve the safety performance of use, a reagent box 15 is fixedly connected inside the square groove 2. A second baffle 16 is slidably arranged inside the reagent box 15. The second baffle 16 divides the interior of the reagent box 15 into a material bin 34 and a sliding bin 35, and the material bin 34 is located at one end of the reagent box 15 close to the inside of the housing 1. The interior of the material bin 34 is filled with fire extinguishing powder, which is prepared from base materials such as baking soda and ammonium carbonate. It is the same as the raw materials of dry powder fire extinguishing agents and has the effect of extinguishing fires. An outlet groove 18 is opened on the reagent box 15, and the sliding bin 35 communicates with the housing 1 through the outlet groove 18.

[0066] A second spring 17 is arranged inside the material bin 34. One end of the second spring 17 is fixedly connected to the second baffle 16, and the other end of the second spring 17 is fixedly connected to the inner wall of the material bin 34. A third magnet 19 is fixedly connected to one side of the second baffle 16 close to the sliding bin 35. The third magnet 19 is attracted and cooperates with the first magnet 12, and the magnetism of the mutually approaching surfaces of the third magnet 19 and the first magnet 12 is opposite.

[0067] An electromagnet 14 is fixedly connected to the support block 9, and the electromagnet 14 is used for emergency. When a sudden spontaneous combustion occurs inside the housing 1, the electromagnet 14 is emergently activated. The magnetic properties of the mutually approaching surfaces of the electromagnet 14 and the second magnet 13 are the same. Under the action of the repulsive force, the first baffle 8 overcomes the elastic supporting force of the first spring 10 and moves towards the accumulating groove 4, and fits on the inner wall of the sliding groove 5, covering the filter holes 7. External gas cannot enter the inside of the housing 1, and the air pump 29 sucks the inside of the housing 1 through structures such as the first U-shaped box 21. As the air pressure decreases, the oxygen content relatively decreases, controlling the fire.

[0068] During specific use, an emergency power supply can be set on the housing 1 to supply power to structures such as the electromagnet 14 and the air pump 29.

[0069] During normal operation, the square box 6 only slides on the rectangular plate 3 to clean the accumulating groove 4; when a sudden spontaneous combustion occurs inside the housing 1, the telescopic end of the electric push rod 30 extends, driving the square box 6 to fit corresponding to the agent box 15 through the second U-shaped box 22. Since the third magnet 19 and the first magnet 12 are attracted to each other, the second baffle 16 overcomes the elastic supporting force of the second spring 17 and moves towards the square box 6, the storage bin 34 expands and communicates with the housing 1 through the discharge chute 18. Under the action of the suction force, the fire extinguishing powder inside it enters the inside of the housing 1 through the discharge chute 18 and covers structures such as the conductive copper bar 31.

[0070] Structures such as the agent box 15 and the second baffle 16 are provided. When a sudden spontaneous combustion occurs inside the housing 1, the fire extinguishing powder enters the inside of the housing 1 through the discharge chute 18 and covers structures such as the conductive copper bar 31, realizing internal fire extinguishing and improving the safety of the use of the compact busbar trunking.

[0071] At this time, the filter holes 7 are all closed, ensuring that the suction force is concentrated at the discharge chute 18, and the fire extinguishing powder inside the storage bin 34 is better discharged.

[0072] It should be noted that a pressure supplement device (not shown in the figure) is provided on the agent box 15. The pressure supplement device includes structures such as a one-way valve. When sucking the fire extinguishing powder inside the storage bin 34, the pressure supplement device can make external gas enter the storage bin 34 to ensure the normal flow of the fire extinguishing powder. The pressure supplement device is a common existing technology and will not be elaborated here.

[0073] Working principle: During normal operation, the air inlet groove 11 is located between the first baffle 8 and the accumulating groove 4 (refer to Figure 8 the left position), and external gas can enter the inside of the housing 1 in sequence through the accumulating groove 4, the filter holes 7, the sliding groove 5 and the air inlet groove 11.

[0074] Start the air pump 29. The air pump 29 sucks the inside of the housing 1 through structures such as the first U-shaped box 21. External gas sequentially enters the inside of the housing 1 from the product groove 4, the filter holes 7, the chute 5, and the air inlet groove 11, and is discharged from the air outlet groove 36, thereby realizing the gas circulation inside the housing 1, taking away the heat generated by structures such as the conductive copper bar 31, and thus realizing the cooling and heat dissipation of the compact busbar.

[0075] During the heat dissipation process, the second solenoid valve 37 is closed, and the first solenoid valve 28 is controlled to switch between open and closed states. When the first solenoid valve 28 is in the closed state, the air pump 29 sucks the pressurizing box 27 into a vacuum state; then the first solenoid valve 28 is opened. At this time, there is a large pressure difference between the pressurizing box 27 and the product groove 4, and with the suction cooperation of the air pump 29, a large suction force will be generated, accelerating the gas flow rate inside the housing 1 and improving the heat dissipation effect; repeat the above steps, thereby periodically increasing the suction force to achieve efficient heat dissipation.

[0076] During the ventilation and heat dissipation process, the gas passes through the filter holes 7, while impurities will accumulate inside the product groove 4. When the accumulated impurities are too many and affect the ventilation effect, control the telescopic end of the electric push rod 30 to extend, so that the square box 6 corresponds to the first chute 5 in its moving direction. Since the length and width of the inner wall of the square box 6 are respectively the same as those of the product groove 4, the product groove 4 can be covered. At the same time, due to the attraction cooperation between the first magnet 12 and the second magnet 13, under the action of the attraction force, the first baffle 8 overcomes the elastic supporting force of the first spring 10 and moves towards the product groove 4, fitting on the inner wall of the chute 5 to complete the covering of the filter holes 7 (refer to Figure 8 the right side position). At this time, a cleaning space is formed between the product groove 4 and the square box 6. Open the second solenoid valve 37, and the air pump 29 sucks and cleans the impurities accumulated inside the product groove 4 through the first air pipe 23, the second U-shaped box 22, and the square box 6, achieving the effect of automatic cleaning, and the impurities will be directly sucked away without staying near the product groove 4.

[0077] At the same time, the first baffle 8 covers the filter holes 7, improving the effect of sucking and cleaning impurities, and at the same time preventing the suction from affecting the air flow inside the housing 1.

[0078] During the process of sucking and cleaning impurities, the second solenoid valve 37 and the first solenoid valve 28 can be controlled to synchronously switch between open and closed states, thereby periodically increasing the suction force to achieve efficient cleaning.

[0079] Since the square box 6 only covers and blocks a single product groove 4, the product grooves 4 in other positions remain open, and external gas can sequentially enter the inside of the housing 1 from the corresponding product groove 4, filter holes 7, chute 5, and air inlet groove 11, without affecting the cooling and heat dissipation of the compact busbar.

[0080] After the cleaning of a single product groove 4 is completed, the square box 6 can be controlled to correspond to the next chute 5, and the cleaning of all product grooves 4 is completed.

[0081] When a sudden spontaneous combustion occurs inside the housing 1, the electromagnet 14 is emergently activated. The magnetic properties of the mutually approaching surfaces of the electromagnet 14 and the second magnet 13 are the same. Under the action of the repulsive force, the first baffle 8 overcomes the elastic supporting force of the first spring 10 and moves towards the product groove 4, and fits on the inner wall of the chute 5 to complete the covering of the filter holes 7. External gas cannot enter the inside of the housing 1. The air pump 29 sucks the inside of the housing 1 through structures such as the first U-shaped box 21. As the air pressure decreases, the oxygen content relatively decreases, and the fire is controlled.

[0082] At the same time, the telescopic end of the electric push rod 30 extends out, and drives the square box 6 to correspond and fit with the agent box 15 through the second U-shaped box 22. Since the third magnet 19 is attracted and cooperated with the first magnet 12, the second baffle 16 overcomes the elastic supporting force of the second spring 17 and moves towards the square box 6. The storage bin 34 expands and is communicated with the housing 1 through the discharge chute 18. The fire extinguishing powder inside it enters the inside of the housing 1 through the discharge chute 18 and covers structures such as the conductive copper bar 31 to achieve internal fire extinguishing and improve the safety of the use of the intensive busbar trunking.

Claims

1. A dense bus duct with a flame retardant structure, comprising a housing (1), characterized in that: The shell (1) is provided with square grooves (2) on both sides, a rectangular plate (3) is fixedly connected to the inside of the square groove (2), a storage groove (4) for impurities to accumulate is provided on the side of the rectangular plate (3) close to the outside of the shell (1), a slide groove (5) is provided on the side of the rectangular plate (3) close to the inside of the shell (1), a plurality of filter holes (7) are provided on the inner wall of the storage groove (4), the storage groove (4) is connected to the slide groove (5) through the filter holes (7), and the slide groove (5) is provided with a plurality of filter holes (7) on the inner wall of the storage groove (4), and the storage groove (4) is connected to the slide groove (5) through the filter holes (7). An air inlet groove (11) is provided through both the upper and lower ends, the slide groove (5) is connected to the shell (1) through the air inlet groove (11), a first baffle (8) for covering the filter hole (7) is slidably provided inside the slide groove (5), and a square box (6) for sucking impurities inside the accumulation groove (4) is provided on both sides of the shell (1), the square box (6) is slidably fitted on the corresponding rectangular plate (3), and the length and width of the inner wall of the square box (6) are respectively consistent with the length and width of the accumulation groove (4); A through slot is formed through the first baffle (8), a second magnet (13) is fixedly connected inside the through slot, a first magnet (12) is fixedly connected to the inner wall of the square box (6), the first magnet (12) and the second magnet (13) are attracted to each other, a support block (9) is fixedly connected to the inner wall of the slide groove (5), the support block (9) is located on the side of the first baffle (8) facing away from the storage groove (4), and a first spring (10) is fixedly connected between the support block (9) and the first baffle (8).

2. The dense bus duct with a flame retardant structure according to claim 1, characterized in that: The accumulation groove (4) and the chute (5) are both provided in plurality, and the plurality of accumulation grooves (4) and the plurality of chute (5) are distributed in a one-to-one correspondence.

3. The dense bus duct with a flame retardant structure according to claim 1, characterized in that: The square groove (2) is fixedly connected to a reagent box (15), and a second baffle (16) is slidably arranged inside the reagent box (15). The second baffle (16) divides the inside of the reagent box (15) into a material bin (34) and a sliding bin (35). The material bin (34) is located at one end of the reagent box (15) close to the inside of the shell (1). The inside of the material bin (34) is filled with fire extinguishing powder. The reagent box (15) is provided with a discharge groove (18), and the sliding bin (35) is connected to the shell (1) through the discharge groove (18).

4. The dense bus duct with a flame retardant structure according to claim 3, characterized in that: A second spring (17) is arranged inside the material bin (34), one end of the second spring (17) is fixedly connected to the second baffle (16), and the other end of the second spring (17) is fixedly connected to the inner wall of the material bin (34); a third magnet (19) is fixedly connected to a side of the second baffle (16) close to the sliding bin (35), and the third magnet (19) is attracted to and matched with the first magnet (12).

5. The dense bus duct with a flame retardant structure according to claim 4, characterized in that: An electromagnet (14) is fixedly connected to the support block (9).

6. The dense bus duct with a flame retardant structure according to claim 1, characterized in that: A second U-shaped box (22) is slidably provided on the outside of the shell (1), the second U-shaped box (22) is connected between the two square boxes (6), a protrusion (20) is fixedly connected to the outer wall of the shell (1), an electric push rod (30) is fixedly connected to the protrusion (20), and the second U-shaped box (22) is fixedly connected to the telescopic end of the electric push rod (30).

7. The dense bus duct with a flame retardant structure according to claim 6, characterized in that: Air outlet grooves (36) are provided on both sides of the shell (1); the square groove (2) and the air outlet groove (36) are respectively located at two ends of the shell (1); a first U-shaped box (21) is fixedly connected to the outer wall of the shell (1); and the first U-shaped box (21) is connected between the two air outlet grooves (36).

8. The dense bus duct with a flame retardant structure according to claim 7, characterized in that: A suction and pressurization assembly is arranged between the first U-shaped box (21) and the second U-shaped box (22), and the suction and pressurization assembly comprises a first air pipe (23), a second air pipe (24), a three-way joint (25), a third air pipe (26), a pressurization box (27), a first solenoid valve (28), an air pump (29) and a second solenoid valve (37); the three-way joint (25) is connected between the first air pipe (23) and the second air pipe (24); one end of the first air pipe (23) away from the three-way joint (25) is connected to the second U-shaped box (22); and the second air pipe (26) is connected to the third air pipe (27). One end of the tube (24) away from the three-way joint (25) is connected to the first U-shaped box (21); the booster box (27) and the air pump (29) are both fixedly connected to the outer wall of the shell (1); the air inlet end of the air pump (29) is connected to the booster box (27); one end of the third air pipe (26) is connected to the three-way joint (25); the other end of the third air pipe (26) is connected to the booster box (27); the first solenoid valve (28) is fixedly mounted on the second air pipe (24); and the second solenoid valve (37) is fixedly mounted on the first air pipe (23).

9. The dense bus duct with a flame retardant structure according to claim 1, characterized in that: The shell (1) is provided with a plurality of evenly distributed conductive copper bars (31), the conductive copper bars (31) are externally covered with an insulating fireproof cover (32), the upper and lower ends of the shell (1) are fixedly connected with flame retardant blocks (33), and the insulating fireproof cover (32) is fixedly connected between the upper and lower flame retardant blocks (33).

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