An assembled busbar connection device for a box-type substation

Abstract

The present invention relates to the technical field of busbar connectors, and in particular to an assembled busbar connection device for a box-type substation, comprising a busbar connector, busbar troughs are provided on both sides of the busbar connector, cover assemblies are provided at both upper and lower ends of the busbar connector, and a fixing piece is provided in the middle of the busbar connector; the cover assembly comprises a cover plate, a detection assembly is provided on the inner top of the cover plate, array-distributed vents are provided on both sides of the cover plate, and an adjustment assembly is provided on the outer side of the vents; the present invention arranges a detection assembly and a hollow rod, and when the control system detects that the connection between the conductive copper busbar and the busbar connector is overheated, the ventilation valve and the adjustment device are started to improve the heat exchange efficiency between the upper cover plate and the lower cover plate; when the control system detects that strong vibration occurs at the connection between the conductive copper busbar and the busbar connector, the gas transmission valve is started so that the elastic member forms a buffer zone between the insulating plate and the hollow rod, thereby improving the stability between the insulating plate and the conductive copper busbar.

Description

Technical Field

[0001] The invention relates to the technical field of busbar connectors, and in particular to an assembled busbar connecting device for a box-type substation. Background Art

[0002] With the development of industry, the consumption of electric energy in various industries is increasing. In order to meet the production needs, box-type substations are generally set up inside the factory to meet the electricity demand. The box-type substation reduces the voltage through the transformer, thereby providing power for various electrical equipment. The plug-in dense busbar came into being; the conductive part of the plug-in dense busbar is composed of copper bars, insulating materials and other related accessories, and the copper bars are connected with dense busbar connectors.

[0003] The Chinese patent application number: CN201711348920.2 discloses a dense busbar connector device, including an upper cover plate, a lower cover plate, multiple insulating partitions, stud bolts and a first nut; the insulating partitions are stacked in sequence between the upper cover plate and the lower cover plate, and are locked and fixed by stud bolts and a first nut. The insulating partitions include an upper insulating partition, a lower insulating partition and a first connecting mechanism. The thickness of the insulating partition is adjustable, so that the plug-in is more stable, the firmness is good, and the versatility is strong.

[0004] The Chinese patent with application number: CN201821789740.8 discloses a busbar connector, including two side plates, a connector body, an upper cover plate, and a lower cover plate; the upper cover plate and the lower cover plate are both U-shaped structures, and the opening end of the upper cover plate is arranged opposite to the opening end of the lower cover plate; sealing strips and sealing plates are provided at both ends of the inner walls of the upper cover plate and the lower cover plate; the ends of the sealing plate and the side plate are abutted against each other; the cross-section of the sealing strip is cylindrical, and the sealing strip is located at the end of the sealing plate away from the side plate.

[0005] Although the prior art can improve the adaptability of busbar connectors by designing insulating partitions and cover plates, the busbar duct is a power distribution device that efficiently transmits current. When the busbar duct transmits large current for a long time, the connection between the busbar duct and the busbar connector will be in a high temperature state for a long time, thereby accelerating the aging of the insulating material and reducing the service life of the busbar duct. At the same time, if the busbar duct changes rapidly when transmitting current, the electromagnetic field generated will cause strong vibration of the busbar duct, resulting in arcing between the busbar duct and the connector, which will cause a fire. The prior art lacks a long-term, in-depth and stable monitoring and processing device for the busbar duct.

[0006] Therefore, it is necessary to invent a box-type substation assembled busbar connection device to solve the above problems. Summary of the invention

[0007] The object of the present invention is to provide an assembled busbar connection device for a box-type substation to solve the technical problem in the above-mentioned background technology that the connection between the bus duct and the busbar connector cannot be monitored and processed in a long-term and stable manner.

[0008] To achieve the above object, the present invention provides the following technical solutions:

[0009] An assembled busbar connection device for a box-type substation includes a busbar connector, busbar ducts are provided on both sides of the busbar connector, and cover assemblies are provided at the upper and lower ends of the busbar connector; a fixing piece is provided in the middle of the busbar connector, and the fixing piece is used to achieve a fixed connection between the busbar connector and the busbar duct.

[0010] The cover assembly comprises a cover plate, a detection assembly is arranged on the inner top of the cover plate, air vents distributed in an array are arranged on both sides of the cover plate, and an adjustment assembly is arranged on the outer side of the air vents.

[0011] The detection component includes a fixed tube arrayed on the inner top of the cover plate, a connecting plate slidably connected to the inside of the fixed tube, a push rod is provided at the bottom of the connecting plate, an expansion piece is provided on the surrounding side of the push rod, one end of the expansion piece is connected to the connecting plate, and the other end of the expansion piece is connected to the bottom of the fixed tube.

[0012] The adjustment assembly includes a sealing plate hinged to the outer side of the cover plate, the sealing plate blocks the vent, a telescopic rod is provided at the bottom of the sealing plate, the bottom ends of all the telescopic rods located on the same side of the cover plate are rotatably connected to a sliding rod, the sliding rod is slidably connected to a limiting groove provided on the outer side of the cover plate, a pushing member is provided at the end of the sliding rod, and the end of the pushing member is fixedly connected to the outer side wall of the cover plate.

[0013] The present invention arranges a detection component and a hollow rod. When the elongation of the inner top expansion piece of the upper cover plate and the inner top expansion piece of the lower cover plate both exceed the set value, the air intake device is controlled to start, the vent valve is opened, and the pusher is controlled to extend, so that the vent hole is unblocked. The air intake device transports gas to the inside of the hollow rod, and then enters the space between the upper cover plate and the lower cover plate through the vent pipe. The gas is discharged from the vent hole after heat exchange with the hot air, so that the space between the upper cover plate and the lower cover plate is cooled, thereby preventing the high temperature generated by the conductive copper busbar during large current transmission from being unable to be discharged in time by the inside of the cover plate, resulting in aging of the insulating material.

[0014] When the elongation of the expansion piece on the top of the upper cover plate and the expansion piece on the top of the lower cover plate are in an interlaced state per unit time, the air intake device is controlled to start, the air supply valve is opened, and the air intake device delivers gas to the gap between the hollow rod and the elastic layer, so that the elastic layer expands, and the outer wall of the elastic layer covers the conical block on the through hole; on the one hand, after the elastic layer expands, a buffer zone is formed between the insulating plate and the hollow rod, reducing the influence of vibration; on the other hand, after the elastic layer covers the conical block, the conical block clamps the hollow rod through the elastic layer, thereby avoiding the movement of the hollow rod due to vibration, resulting in loosening between the hollow threaded barrel and the threaded block at both ends of the hollow rod.

[0015] Preferably, the inner top of the cover plate is symmetrically provided with a limiting slide groove, the interior of the limiting slide groove is slidably connected with an array-distributed limiting slider, and the bottom of the limiting slider is connected to an end of the fixing tube away from the push rod.

[0016] Preferably, the fixing member comprises a hollow rod, an outer wall of which is provided with first air transmission holes distributed in an array, an outer wall of the hollow rod is provided with an elastic layer, two ends of the elastic layer are respectively connected to two ends of the hollow rod, and the elastic layer covers the first air transmission holes.

[0017] A connecting pipe is provided inside the hollow rod, a gas supply valve is provided inside the connecting pipe, and gas supply pipes distributed in an array are provided on the outer wall of the connecting pipe, and the gas supply pipes are connected to the first gas supply hole.

[0018] Preferably, a vent valve is provided at the connection between the hollow rod and the connecting pipe, an array of vent pipes are provided on the outer wall of the hollow rod, the vent pipes are staggered with the gas pipes, one end of the vent pipe away from the hollow rod is fixedly connected to the elastic layer, and an exhaust hole is provided at the connection between the vent pipe and the elastic layer.

[0019] Preferably, hollow threaded barrels are provided at both ends of the hollow rod, one end of the hollow threaded barrel away from the hollow rod is connected to an external air intake device, a threaded block is provided on the outside of the hollow threaded barrel, and an extrusion portion is provided at one end of the threaded block close to the middle of the hollow rod.

[0020] Preferably, the top of the cover plate is provided with heat dissipation fins distributed in an array, and sealing blocks are provided at both ends of the cover plate, and the bottom of the sealing block is in contact with the bus duct.

[0021] Preferably, the busbar connector includes insulating plates arranged in an array, both ends of the insulating plates are chamfered, the middle of the insulating plates is provided with a through hole connected to the hollow rod, the middle of two opposite sides of the insulating plates are provided with a conductive plate, and both ends of the opposite sides of the two insulating plates are provided with a conveying device.

[0022] Preferably, the conveying device includes a transmission roller rotatably connected to the insulating plate, a ratchet is fixedly connected to the end of the transmission roller, the diameter of the ratchet is smaller than the diameter of the transmission roller, a pawl is provided on the outer side of the ratchet, and the pawl is rotatably connected to the insulating plate.

[0023] Preferably, the bus duct includes a wire duct shell, a connecting block is provided at the end of the wire duct shell, a plurality of conductive copper bars are provided on the connecting block, side plates are provided on both sides of the connecting block, the side plates are bent, and the side plates are connected to the wire duct shell by insulating bolts.

[0024] Preferably, the through hole is provided with an array of conical blocks, the ends of the conical blocks are rounded, the ends of the conical blocks are in contact with the outer wall of the elastic layer, and the interior of the elastic layer is coated with insulating fire extinguishing material.

[0025] Technical effects and advantages of the present invention:

[0026] 1. The present invention provides a conveying device. During the plugging process of the conductive copper bar and the insulating plate, under the influence of friction, the conductive copper bar drives the ratchet to rotate, thereby improving the plugging effect of the conductive copper bar and the insulating plate. At the same time, after the plugging is completed, under the engagement of the ratchet and the pawl, the friction between the transmission roller and the conductive copper bar is enhanced, thereby preventing the bus duct from falling off from the bus connector due to external pulling force.

[0027] 2. The present invention sets a detection component and a hollow rod. When the control system detects that the connection between the conductive copper busbar and the busbar connector is overheated, the heat exchange efficiency between the upper cover plate and the lower cover plate is improved by starting the ventilation valve and the regulating device in the hollow rod. When the control system detects that strong vibration occurs at the connection between the conductive copper busbar and the busbar connector, the air supply valve in the connecting pipe is started to expand the elastic member. After the elastic layer expands, a buffer zone is formed between the insulating plate and the hollow rod, thereby reducing the influence of vibration and improving the stability between the insulating plate and the conductive copper busbar.

[0028] 3. The present invention wraps the insulating fire extinguishing material inside the elastic layer. When the control system detects that the elongation of the expansion piece reaches the maximum value, the control system controls the regulating device to open the vent hole, and continuously supplies gas to the gap between the hollow rod and the elastic layer, so that the elastic layer is broken and the insulating fire extinguishing material leaks. The airflow output from the gas pipe blows the insulating fire extinguishing material leaked between the upper cover plate and the lower cover plate, so that part of the insulating fire extinguishing material is discharged from the vent hole, and the fire on the sides of the upper cover plate and the lower cover plate is extinguished. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic diagram of the main structure of the present invention.

[0030] Figure 2 It is a schematic diagram of the structure of the bus duct and the bus connector after being assembled in the present invention.

[0031] Figure 3 It is a schematic diagram of the top view of the bus duct and the bus connector after assembly of the present invention.

[0032] Figure 4 It is a schematic structural diagram of the conveying device of the present invention.

[0033] Figure 5 It is a schematic diagram of the structure of the regulating component of the present invention.

[0034] Figure 6 It is a schematic diagram of the combined structure of the sealing plate and the vent hole of the present invention.

[0035] Figure 7 It is a cross-sectional schematic diagram of the main structure of the present invention.

[0036] Figure 8 It is a schematic diagram of the structure of the detection component of the present invention.

[0037] Fig. 9 It is a structural schematic diagram of the hollow rod of the present invention.

[0038] Fig.10 It is a structural schematic diagram of a cross section of the hollow rod of the present invention.

[0039] Fig.11 It is a structural schematic diagram of another cross section of the hollow rod of the present invention.

[0040] Fig.12 It is a schematic diagram of the structure of the through hole of the present invention.

[0041] In the figure: 1. busbar connector; 101. insulating plate; 102. through hole; 103. conductive plate; 104. conical block; 2. busbar; 201. trunking shell; 202. connecting block; 203. conductive copper busbar; 204. attached side plate; 3. cover assembly; 301. cover plate; 302. vent hole; 303. heat dissipation fin; 304. sealing block; 4. fixing member; 401. hollow rod; 402. elastic layer; 403. connecting pipe; 404. gas valve; 405. gas pipe; 406, ventilation valve; 407, ventilation pipe; 5, detection component; 501, fixing cylinder; 502, connecting plate; 503, push rod; 504, expansion member; 505, limit slide groove; 506, limit slider; 6, adjustment component; 601, sealing plate; 602, telescopic rod; 603, sliding rod; 604, limit groove; 605, pushing member; 7, conveying device; 701, transmission roller; 702, ratchet; 703, ratchet pawl; 8, hollow threaded cylinder; 9, threaded block; 10, extrusion part. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0043] Embodiment 1

[0044] Reference Figures 1 to 4 As shown, an assembled busbar connection device for a box-type substation includes a busbar connector 1, busbar ducts 2 are provided on both sides of the busbar connector 1, and cover assemblies 3 are provided at the upper and lower ends of the busbar connector 1; a fixing member 4 is provided in the middle of the busbar connector 1, and the fixing member 4 is used to realize a fixed connection between the busbar connector 1 and the busbar duct 2.

[0045] The cover assembly 3 includes a cover plate 301 , the top of which is provided with heat dissipation fins 303 distributed in an array, and sealing blocks 304 are provided at both ends of the cover plate 301 , the bottom of the sealing block 304 is in contact with the bus duct 2 .

[0046] The fixing member 4 includes a hollow rod 401, and hollow threaded cylinders 8 are provided at both ends of the hollow rod 401. The end of the hollow threaded cylinder 8 away from the hollow rod 401 is connected to the external air intake device, and a threaded block 9 is provided on the outside of the hollow threaded cylinder 8. The end of the threaded block 9 close to the middle of the hollow rod 401 is provided with an extrusion part 10.

[0047] Specifically, the busbar connector 1 includes insulating plates 101 arranged in an array, both ends of the insulating plates 101 are chamfered, the middle of the insulating plates 101 is provided with a through hole 102 connected to the hollow rod 401, the middle of the opposite sides of the two insulating plates 101 are provided with a conductive plate 103, and both ends of the opposite sides of the two insulating plates 101 are provided with a conveying device 7.

[0048] Specifically, the conveying device 7 includes a transmission roller 701 rotatably connected to the insulating plate 101 , a ratchet 702 is fixedly connected to the end of the transmission roller 701 , the diameter of the ratchet 702 is smaller than the diameter of the transmission roller 701 , a pawl 703 is provided on the outer side of the ratchet 702 , and the pawl 703 is rotatably connected to the insulating plate 101 .

[0049] Specifically, the bus duct 2 includes a duct shell 201, a connecting block 202 is provided at the end of the duct shell 201, a plurality of conductive copper bars 203 are provided on the connecting block 202, and side plates 204 are provided on both sides of the connecting block 202, the side plates 204 are bent, and the side plates 204 are connected to the duct shell 201 by insulating bolts.

[0050] When in use, select an insulating plate 101 of appropriate size according to the number and specifications of the conductive copper busbars 203, and restrict the insulating plate 101 to the outside of the hollow rod 401 through the cooperation between the hollow rod 401 and the through hole 102. Then, threaded blocks 9 are threadedly connected to the hollow threaded tubes 8 at both ends of the hollow rod 401, thereby completing the assembly of the busbar connector 1.

[0051] It should be noted that: during the threaded connection between the threaded block 9 and the hollow threaded tube 8, the extrusion portion 10 on the threaded block 9 does not contact the outer wall of the insulating plate 101, and there is a certain gap between each insulating plate 101, preparing for the connection between the bus duct 2 and the bus connector 1.

[0052] After the assembly of the busbar connector 1 is completed, the distributed conductive copper bars 203 on the connecting block 202 are respectively inserted into the gaps between the corresponding two adjacent insulating plates 101. Since the two ends of the insulating plates 101 are rounded, the end of the conductive copper bar 203 away from the connecting block 202 can quickly enter the gap between the insulating plates 101. After the conductive copper bar 203 enters the gap between the insulating plates 101, it contacts the outer surface of the transmission roller 701. The outer surface of the transmission roller 701 is provided with a rubber layer, and the outer wall of the rubber layer is provided with a pattern to increase friction. After the outer surface of the roller 701 contacts, due to the influence of friction, the transmission roller 701 rotates, and the transmission roller 701 drives the ratchet 702 to turn the ratchet 703 to rotate until the conductive copper bus 203 reaches the specified position, thereby completing the preliminary assembly of the bus duct 2 and the bus connector 1, and then tighten the threaded blocks 9 at both ends of the hollow rod 401 with a wrench, and the extrusion part 10 on the threaded block 9 is in extrusion contact with the side wall of the insulating plate 101, so that the distance between each insulating plate 101 is reduced, and the insulating plate 101 is able to clamp the conductive copper bus 203, thereby completing the assembly of the bus duct 2 and the bus connector 1.

[0053] It should be noted that: after the bus duct 2 and the bus connector 1 are assembled, when the bus duct 2 is pulled externally, the insulating plate 101 clamps the conductive copper bus 203 and the ratchet 702 and the pawl 703 engage, so that the friction between the insulating plate 101 and the conductive copper bus 203 and the friction between the transmission roller 701 and the conductive copper bus 203 are enhanced, thereby preventing the bus duct 2 from falling off the bus connector 1; by providing the transmission roller 701 and the ratchet 702, the connection effect between the bus ducts 2 is improved.

[0054] After the bus duct 2 and the bus connector 1 are assembled, the two cover plates 301 are buckled onto the upper and lower ends of the bus connector 1 (specifically, Figure 1As shown), the sealing blocks 304 at both ends of the cover plate 301 are respectively in contact with the outer surfaces of the two wire trough shells 201, and then the outer side wall of the cover plate 301 is fixed to the wire trough shell 201 by screws. By assembling the upper and lower cover plates 301 on the wire trough shell 201, the conductive copper bus 203 is sealed inside the busbar connector 1, thereby preventing the conductive copper bus 203 from being short-circuited by external moisture or water, and preventing external dust from accumulating on the conductive copper bus 203, which causes the current transmission capacity of the conductive copper bus 203 to decrease.

[0055] It should be noted that: since the top of the cover plate 301 is provided with a heat dissipation fin 303, the heat dissipation fin 303 transfers the heat generated by the conductive copper bus 203 during current transmission to the outside, thereby preventing the conductive copper bus 203 from overheating and causing aging of the insulating material covering the conductive copper bus 203.

[0056] Embodiment 2

[0057] Although the above embodiment solves the problem of short circuit of the conductive copper busbar 203 due to external moisture or water through the cover plate 301, the high temperature generated by the conductive copper busbar 203 when transmitting a large current for a long time will be confined between the upper and lower cover plates 301 and cannot be discharged in time, which will still cause the aging of the insulating material; at the same time, the existing technology cannot eliminate the strong vibration of the bus duct 2 caused by the current change when the bus duct 2 is transmitting current. In view of this, the technical solution is modified on the basis of the first embodiment, and the modified technical solution is as follows.

[0058] Reference Figures 1 to 12 As shown, an assembled busbar connection device for a box-type substation includes a busbar connector 1, busbar ducts 2 are provided on both sides of the busbar connector 1, and cover assemblies 3 are provided at the upper and lower ends of the busbar connector 1; a fixing member 4 is provided in the middle of the busbar connector 1, and the fixing member 4 is used to realize a fixed connection between the busbar connector 1 and the busbar duct 2.

[0059] The cover assembly 3 comprises a cover plate 301 , a detection assembly 5 is disposed on the inner top of the cover plate 301 , air vents 302 distributed in an array are provided on both sides of the cover plate 301 , and an adjustment assembly 6 is disposed on the outer side of the air vents 302 .

[0060] The detection component 5 includes a fixed cylinder 501 arranged in an array on the top of the cover plate 301, and the interior of the fixed cylinder 501 is slidably connected with a connecting plate 502, the bottom of the connecting plate 502 is provided with a push rod 503, and the surrounding side of the push rod 503 is provided with an expansion member 504, one end of the expansion member 504 is connected to the connecting plate 502, and the other end of the expansion member 504 is connected to the bottom of the fixed cylinder 501.

[0061] The adjustment component 6 includes a sealing plate 601 hinged to the outer side of the cover plate 301, and the sealing plate 601 blocks the vent 302. A telescopic rod 602 is provided at the bottom of the sealing plate 601. The bottom ends of all the telescopic rods 602 located on the same side of the cover plate 301 are rotatably connected to a sliding rod 603. The sliding rod 603 is slidably connected to a limiting groove 604 opened on the outer side of the cover plate 301. A pushing member 605 is provided at the end of the sliding rod 603, and the end of the pushing member 605 is fixedly connected to the outer wall of the cover plate 301.

[0062] Specifically, the inner top of the cover plate 301 is symmetrically provided with a limit slot 505 , the inner part of the limit slot 505 is slidably connected with an array of limit sliders 506 , and the bottom of the limit slider 506 is connected to the end of the fixed tube 501 away from the push rod 503 .

[0063] Specifically, the fixing member 4 includes a hollow rod 401, an outer wall of which is provided with first air transmission holes distributed in an array, an outer wall of the hollow rod 401 is provided with an elastic layer 402, two ends of the elastic layer 402 are respectively connected to two ends of the hollow rod 401, and the elastic layer 402 covers the first air transmission holes.

[0064] A connecting pipe 403 is provided inside the hollow rod 401 , a gas delivery valve 404 is provided inside the connecting pipe 403 , and gas delivery pipes 405 distributed in an array are provided on the outer wall of the connecting pipe 403 , and the gas delivery pipes 405 are connected to the first gas delivery hole.

[0065] Specifically, a vent valve 406 is provided at the connection between the hollow rod 401 and the connecting pipe 403, and an array of vent pipes 407 are provided on the outer wall of the hollow rod 401. The vent pipes 407 are staggered with the gas supply pipe 405. One end of the vent pipe 407 away from the hollow rod 401 is fixedly connected to the elastic layer 402, and an exhaust hole is provided at the connection between the vent pipe 407 and the elastic layer 402.

[0066] Specifically, hollow threaded cylinders 8 are provided at both ends of the hollow rod 401 , and one end of the hollow threaded cylinder 8 away from the hollow rod 401 is connected to an external air intake device.

[0067] Specifically, a through hole 102 connected to the hollow rod 401 is provided in the middle of the insulating plate 101, and an array of conical blocks 104 are provided inside the through hole 102, and the ends of the conical blocks 104 are rounded.

[0068] It should be noted that: in this embodiment, the height of the insulating plate 101 is greater than the height of the conductive copper busbar 203. After the conductive copper busbar 203 enters the gap between the insulating plates 101, the upper and lower ends of the insulating plate 101 do not contact the upper and lower ends of the conductive copper busbar 203 (that is, there is a height difference between the upper and lower ends of the insulating plate 101 and the upper and lower ends of the conductive copper busbar 203). When the cover plate 301 is buckled with the busbar connector 1, the push rods 503 distributed on the cover plate 301 are in contact with the ends of each conductive copper busbar 203 respectively.

[0069] A control terminal is provided outside the bus duct 2, and a control system is provided inside the control terminal, and the control system is used to control the electrical components on the device. The expansion member 504 includes a bellows, and the bellows is filled with gas that expands due to heat.

[0070] In the initial state, the vent valve 406 and the gas delivery valve 404 are both in a closed state; the pusher 605 includes a cylinder, and in the initial state, the pusher 605 is in a contracted state, and the sealing plate 601 blocks the vent hole 302.

[0071] After the upper and lower covers 301 are fastened with the busbar connector 1, the control system determines the specific status of the busbar duct 2 and the connector by detecting the elongation of the expansion members 504 on the upper and lower covers 301 per unit time.

[0072] When the elongation of the inner top expansion piece 504 of the upper cover plate and the elongation of the inner top expansion piece 504 of the lower cover plate are in a stable state, it indicates that during the current transmission process of the conductive copper bus 203, the temperature at the connection between the conductive copper bus 203 and the bus connector 1 is in a stable state, and the upper and lower cover plates shield and protect the conductive copper bus 203 to prevent external moisture and dust from falling on the connection between the conductive copper bus 203 and the bus connector 1. The heat energy generated at the connection between the conductive copper bus 203 and the bus connector 1 is conducted to the outside by the heat dissipation fins 303 on the cover plate 301.

[0073] When the elongation of the top expansion piece 504 in the upper cover plate and the elongation of the top expansion piece 504 in the lower cover plate both exceed the set value, it indicates that during the current transmission process of the conductive copper busbar 203, the temperature at the connection between the conductive copper busbar 203 and the busbar connector 1 is overheated, and the expansion piece 504 expands and elongates due to the heat, and the expansion piece 504 pushes the connecting plate 502 to move in the direction of the limiting slide groove 505, so that the push rod 503 gradually breaks away from the contact with the end of the conductive copper busbar 203. At this time, the control system controls the vent valve 406 to open, and the vent pipe 407 is connected to the external air intake device. Thereafter, according to the elongation of the expansion piece 504, the air intake device is controlled to introduce gas into the interior of the hollow rod 401, and the gas enters the space between the upper cover plate and the lower cover plate through the hollow rod 401 and the vent pipe 407. When the air intake device is started, the extension of the push member 605 is controlled according to the extension of the expansion member 504, and the push member 605 drives the sliding rod 603 to move along the limit groove 604. During the movement of the sliding rod 603, the sealing plate 601 is driven to deflect through the telescopic rod 602, and the sealing plate 601 opens the vent 302. After the vent 302 is opened, the gas entering between the upper cover plate and the lower cover plate is discharged from the vent 302. In the process of the gas being discharged, the heat between the upper cover plate and the lower cover plate is discharged synchronously, so that the space between the upper cover plate and the lower cover plate is cooled, so as to avoid the high temperature generated by the conductive copper bus 203 during large current transmission being limited to the inside of the upper and lower cover plates 301 and unable to be discharged in time, resulting in aging of the insulating material.

[0074] After the space between the upper cover plate and the lower cover plate is cooled, the gas inside the expansion member 504 gradually contracts. At this time, the connecting plate 502 drives the push rod 503 to contact the end of the conductive copper bus 203 again. The control system controls the external air intake device to stop working, the vent valve 406 is closed, and the push member 605 contracts, so that the sealing plate 601 blocks the vent hole 302 again.

[0075] It should be noted that: the air intake device in this embodiment includes an air pump, which can be arranged on the outside of the cover plate 301 and connected to the end of the hollow threaded tube 8 through a delivery hose. When the air pump is started during use, the gas in the air pump can enter the interior of the hollow rod 401 through the delivery hose, thereby finally achieving the function of cooling the space between the upper cover plate and the lower cover plate; at the same time, when the gas is discharged from the vent hole 302, the gas blows the external air to prevent external dust from entering the space between the upper cover plate and the lower cover plate through the vent hole 302.

[0076] It should be noted that: the pushing member 605 in this embodiment includes a cylinder, the telescopic end of the cylinder is connected to the end of the sliding rod 603, and the elongation of the cylinder in this example is based on the elongation of the expansion member 504. The longer the elongation of the expansion member 504, the higher the temperature between the upper cover plate and the lower cover plate. At this time, the elongation of the control cylinder is increased, so that the sliding rod 603 drives the deflection angle of the sealing plate 601 to increase, that is, the degree of opening of the vent hole 302 increases, and the heat dissipation effect on the heat-conducting copper bus is enhanced.

[0077] It should be noted that the fixing tube 501, the push rod 503 and the cover plate 301 in this embodiment are all made of insulating materials to avoid the short circuit phenomenon when the conductive copper bus 203 is transmitting current.

[0078] When the elongation of the expansion piece 504 at the top of the upper cover plate and the elongation of the expansion piece 504 at the top of the lower cover plate are in an interlaced state in a unit time, that is, in a unit time, when the expansion piece 504 located at the top of the upper cover plate is elongated, the expansion piece 504 located at the top of the lower cover plate remains in a stable state or shortens. At this time, it indicates that when the bus duct 2 is transmitting current, the current changes too fast, causing the bus duct 2 to drive the insulating plate 101 to vibrate strongly, thereby causing the conductive copper bus 203 to collide with the push rod 503, and the push rod 503 stretches the expansion piece 504 through the connecting plate 502. At this time, the control system controls the external air intake device to start according to the maximum stretching length of the expansion piece 504 distributed on the upper cover plate and the lower cover plate, and controls the air supply valve 404 to open. Since the vent valve 406 in the hollow rod 401 is in a closed state at this time, the gas transported by the air intake device will not be discharged from the vent pipe after entering the hollow rod 401. 407 is not discharged, but enters the connecting pipe 403, and then enters the gap between the hollow rod 401 and the elastic layer 402 through the gas pipe 405, so that the elastic layer 402 expands. After the elastic layer 402 expands, the outer wall of the elastic layer 402 covers the conical block 104 on the through hole 102. On the one hand, after the elastic layer 402 expands, a buffer zone is formed between the insulating plate 101 and the hollow rod 401, which reduces the influence of vibration, improves the stability between the insulating plate 101 and the conductive copper bus 203, and avoids the arcing between the conductive copper bus 203 and the conductive plate 103, thereby preventing the occurrence of fire; on the other hand, after the elastic layer 402 covers the conical block 104, the conical block 104 clamps the hollow rod 401 through the elastic layer 402, thereby preventing the hollow rod 401 from moving due to vibration, resulting in loosening between the hollow threaded barrel 8 and the threaded block 9 at both ends of the hollow rod 401.

[0079] It should be noted that in this example, the amount of gas delivered by the air intake device to the gap between the elastic layer 402 and the hollow rod 401 is based on the maximum elongation of the expansion member 504 distributed on the upper cover plate and the lower cover plate. The longer the maximum elongation of the expansion member 504, the more gas is delivered, the greater the expansion of the elastic layer 402, and the better the vibration reduction effect.

[0080] Embodiment 3

[0081] Reference Fig.12 As shown, a through hole 102 connected to the hollow rod 401 is provided in the middle of the insulating plate 101, and an array of conical blocks 104 are provided inside the through hole 102. The ends of the conical blocks 104 are rounded, and the ends of the conical blocks 104 are in contact with the outer wall of the elastic layer 402. The interior of the elastic layer 402 is coated with insulating fire extinguishing material.

[0082] When the control system detects that the elongation of the expansion member 504 reaches the maximum value and is maintained for a certain period of time, that is, the expansion member 504 pushes the connecting plate 502 to contact the inner top of the fixed cylinder 501, it indicates that the temperature between the upper cover plate and the lower cover plate exceeds the threshold and there is a risk of fire, or a fire occurs on the surrounding sides of the upper cover plate and the lower cover plate. At this time, the control system controls the push member 605 to extend to the maximum value, and the push member 605 drives the deflection angle of the sealing plate 601 to reach the maximum value through the sliding rod 603, so that the vent hole 302 is fully opened. At the same time, the control system controls the external air intake device to start, controls the vent valve 406 to close, and controls the gas supply valve 404 to open, so that the gas enters the gap between the hollow rod 401 and the elastic layer 402 through the connecting pipe 403 and the gas supply pipe 405, so that the elastic layer 402 expands. It is worth noting It is worth noting that at this time, the external air intake device continuously supplies air to the gap between the hollow rod 401 and the elastic layer 402, so that the expansion of the elastic layer 402 becomes larger and larger. As the expansion of the elastic layer 402 increases, the conical block 104 squeezes the elastic layer 402 more and more, and finally punctures the elastic layer 402, causing the insulating fire extinguishing material wrapped in the elastic layer 402 to leak. After the elastic layer 402 is punctured by the conical block 104, the airflow output from the air pipe 405 will blow out from the damaged part of the elastic layer 402 to cool down the space between the upper cover plate and the lower cover plate. At the same time, the airflow output from the air pipe 405 will blow the insulating fire extinguishing material leaked between the upper cover plate and the lower cover plate, so that part of the insulating fire extinguishing material is discharged from the vent hole 302, and the fire around the upper cover plate and the lower cover plate is extinguished.

[0083] It should be noted that: the elastic layer 402 in this embodiment includes a rubber layer, and the insulating fire extinguishing material includes dry powder. After the elastic layer 402 is punctured by the conical block 104, the dry powder wrapped inside the elastic layer 402 will leak out to extinguish the fire between the upper cover plate and the lower cover plate.

[0084] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0085] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A box-type substation assembled busbar connection device, comprising a busbar connector, both sides of which are provided with busbar ducts, characterized in that: The upper and lower ends of the busbar connector are provided with cover assemblies; the middle part of the busbar connector is provided with a fixing piece, and the fixing piece is used to realize the fixed connection between the busbar connector and the busbar duct; The cover assembly comprises a cover plate, a detection assembly is arranged on the inner top of the cover plate, both sides of the cover plate are provided with vent holes distributed in an array, and an adjustment assembly is arranged on the outer side of the vent holes; The detection assembly comprises a fixed cylinder arrayed on the inner top of the cover plate, a connecting plate is slidably connected to the interior of the fixed cylinder, a push rod is provided at the bottom of the connecting plate, an expansion piece is provided on the peripheral side of the push rod, one end of the expansion piece is connected to the connecting plate, and the other end of the expansion piece is connected to the bottom of the fixed cylinder; The adjustment assembly includes a sealing plate hinged to the outer side of the cover plate, the sealing plate blocks the vent hole, a telescopic rod is provided at the bottom of the sealing plate, the bottom ends of all the telescopic rods on the same side of the cover plate are rotatably connected to a sliding rod, the sliding rod is slidably connected to a limiting groove provided on the outer side of the cover plate, a pushing member is provided at the end of the sliding rod, and the end of the pushing member is fixedly connected to the outer side wall of the cover plate; The fixing member comprises a hollow rod, an outer wall of the hollow rod is provided with first gas transmission holes distributed in an array, an outer wall of the hollow rod is provided with an elastic layer, two ends of the elastic layer are respectively connected to two ends of the hollow rod, and the elastic layer covers the first gas transmission holes; A connecting pipe is provided inside the hollow rod, a gas supply valve is provided inside the connecting pipe, and gas supply pipes distributed in an array are provided on the outer wall of the connecting pipe, and the gas supply pipes are connected to the first gas supply hole.

2. According to claim 1, a box-type substation assembled busbar connection device is characterized in that: The inner top of the cover plate is symmetrically provided with a limiting slide groove, the interior of the limiting slide groove is slidably connected with an array-distributed limiting slider, and the bottom of the limiting slider is connected to an end of the fixing tube away from the push rod.

3. The assembled busbar connection device for a box-type substation according to claim 1 is characterized in that: A vent valve is provided at the connection between the hollow rod and the connecting pipe, an array of vent pipes are provided on the outer wall of the hollow rod, the vent pipes are staggered with the gas pipes, one end of the vent pipe away from the hollow rod is fixedly connected to the elastic layer, and an exhaust hole is provided at the connection between the vent pipe and the elastic layer.

4. The assembled busbar connection device for a box-type substation according to claim 3 is characterized in that: Hollow threaded barrels are arranged at both ends of the hollow rod, one end of the hollow threaded barrel away from the hollow rod is connected to an external air intake device, a threaded block is arranged on the outside of the hollow threaded barrel, and an extrusion portion is arranged at one end of the threaded block close to the middle of the hollow rod.

5. The assembled busbar connection device for a box-type substation according to claim 1 is characterized in that: The top of the cover plate is provided with heat dissipation fins distributed in an array, and both ends of the cover plate are provided with sealing blocks, and the bottom of the sealing blocks is in contact with the bus duct.

6. The assembled busbar connection device for a box-type substation according to claim 1 is characterized in that: The busbar connector includes insulating plates arranged in an array, both ends of the insulating plates are chamfered, the middle of the insulating plates is provided with a through hole connected to a hollow rod, the middle of two opposite sides of the insulating plates are provided with a conductive plate, and both ends of the opposite sides of the two insulating plates are provided with a conveying device.

7. The assembled busbar connection device for a box-type substation according to claim 6 is characterized in that: The conveying device includes a transmission roller rotatably connected to the insulating plate, a ratchet wheel is fixedly connected to the end of the transmission roller, the diameter of the ratchet wheel is smaller than the diameter of the transmission roller, a pawl is arranged on the outer side of the ratchet wheel, and the pawl is rotatably connected to the insulating plate.

8. The assembled busbar connection device for a box-type substation according to claim 1 is characterized in that: The bus duct includes a duct shell, a connecting block is provided at the end of the duct shell, a plurality of conductive copper bars are provided on the connecting block, side plates are provided on both sides of the connecting block, the side plates are bent, and the side plates are connected to the duct shell by insulating bolts.

9. The assembled busbar connection device for a box-type substation according to claim 6, characterized in that: The inside of the through hole is provided with an array of conical blocks, the ends of the conical blocks are rounded, the ends of the conical blocks are in contact with the outer wall of the elastic layer, and the inside of the elastic layer is coated with insulating fire extinguishing material.

Images