High-voltage mobile direct-current isolating switch

Abstract

The invention discloses a high-voltage mobile direct-current isolating switch, which belongs to the field of isolating switches and comprises a mounting seat, a protective shell is fixedly connected to the edge of the upper surface of the mounting seat, a through groove is formed in the inner bottom of the mounting seat, and a mounting bin is fixedly connected to the lower surface of the mounting seat. When open fire occurs on the isolating switch, the fusing rope is fused by the flame, the control switch is turned on through the transmission supporting rod, the control switch is powered on to turn on the electromagnetic valve to work, carbon dioxide sprayed out of the nozzle is rapidly sprayed to a fire source, and a large amount of carbon dioxide gas is released after liquid carbon dioxide is gasified. The concentration of carbon dioxide in the surrounding environment is rapidly increased, the concentration of oxygen is reduced, combustion cannot be carried out, a large amount of heat can be absorbed in the gasification process, and therefore the temperature of a combusted object is reduced, the combustion rate is reduced, even combustion can be stopped, a fire disaster can be restrained at the source in time, and economic losses caused by fire disaster expansion are avoided.

Description

Technical Field

[0001] The present invention relates to the field of isolating switches, and more particularly to a high-voltage mobile direct current isolating switch. Background Art

[0002] Isolating switch is one of the most commonly used electrical appliances. DC isolating switch is a device to prevent AC and DC short circuit. It has an isolation transformer connected between the power supply line terminal of the AC motor power supply switch cabinet and the three-phase AC power supply line, and the three-phase AC power supply line is connected to the primary winding of the isolation transformer, and the secondary winding of the isolation transformer is connected to the power supply line terminal of the AC motor power supply switch cabinet.

[0003] During the use of the isolating switch, because of the resistance of the conductive parts inside it, when the current passes through the conductive parts, the resistance generates heat. The greater the resistance, the more heat is generated. The current will flow continuously inside it, and a large amount of heat will be continuously generated when the current flows. When the heat accumulates inside the isolating switch and cannot be discharged in time, the temperature inside the isolating switch will rise. The continuous high temperature will damage and melt the insulating material of the isolating switch, resulting in leakage or even short circuit, causing internal combustion of the isolating switch. Once the isolating switch generates open flames, it will cause a serious fire within the time of discovery and rescue, endangering the safety of life and property. Summary of the invention

[0004] In view of the problems existing in the prior art, the object of the present invention is to provide a high-voltage mobile DC disconnect switch.

[0005] To solve the above problems, the present invention adopts the following technical solutions.

[0006] A high-voltage mobile DC disconnect switch comprises a mounting seat, a protective shell is fixedly connected to the edge of the upper surface of the mounting seat, a through groove is provided in the inner bottom of the mounting seat, a mounting bin is fixedly connected to the lower surface of the mounting seat, a third threaded rod is rotatably connected to one side of the mounting bin, an internal threaded sleeve block is threadedly connected to the outer surface of the third threaded rod, threading holes are provided on both sides of the protective shell, a fire extinguishing assembly for extinguishing fire is provided at the top of the protective shell, and a closing assembly is provided on the upper surface of the mounting seat.

[0007] The fire extinguishing assembly includes a carbon dioxide pressurizing chamber fixed to the top of the protective shell, a support rod fixed to the middle of one side of the inner surface of the protective shell, and a detection assembly fixed to the upper surface of the protective shell, a side plate is fixedly provided on the lower surface of the carbon dioxide pressurizing chamber, a solenoid valve is rotatably connected to one side of the side plate, a guide pipe is fixedly connected to the bottom of the solenoid valve, a nozzle is connected to the outer surface of the guide pipe, a hose is connected to the top of the solenoid valve, a feed valve is fixedly connected to the inner top of the carbon dioxide pressurizing chamber, a first spring is sleeved on the outer surface of the support rod, a C-shaped plate is slidingly sleeved on the outer surface of the support rod, a control switch is fixedly connected to one side of the inner surface of the C-shaped plate, a fixing component is provided on one side of the C-shaped plate, and a fuse rope is provided on the fixing component.

[0008] Furthermore, the fixing component includes a first threaded rod rotated in the middle of one side of the C-shaped plate and a support plate fixed on one side of the C-shaped plate, the bottom of the first threaded rod is rotatably connected to an extrusion plate, the bottom of the extrusion plate is provided with anti-slip grooves, the extrusion plate squeezes and fixes one end of the fuse rope, and a swing assembly is provided at the edge of one side of the inner surface of the protective shell.

[0009] Furthermore, there are two support rods, the first threaded rod is connected to the C-shaped plate through a cross plate, the first threaded rod and the cross plate are connected by threads, the two ends of the fuse rope are respectively fixed by two extrusion plates, a control switch controls the opening and closing of the solenoid valve, the top of the feed valve extends out of the interior of the protective shell, the two ends of the first spring are respectively fixedly connected to one side of the C-shaped plate and the inner surface of the protective shell, and the first spring is in a stretched state.

[0010] Furthermore, the swing assembly includes a first servo motor fixed on one side of the inner surface of the protective shell and a transmission shaft rotating inside the side plate, the output end of the first servo motor is fixedly connected to the rotating shaft, one side of the rotating shaft is fixedly connected to the first gear, one side of the transmission shaft is fixedly connected to the second gear, one side of the transmission shaft is fixedly connected to the solenoid valve, the second gear is meshed with the first gear, and a control switch controls the opening and closing of the first servo motor.

[0011] Furthermore, the detection component includes a fixed cylinder fixed on the upper surface of the protective shell, the outer surface of the fixed cylinder is symmetrically provided with slots, the interior of the slots is slidably connected with plug blocks, and the gas detection sensor is fixedly connected to the side where two plug blocks are close to each other.

[0012] Furthermore, a magnet is arranged at the bottom of the insert block, the feed valve is located inside the fixed cylinder, the gas detection sensor is located above the feed valve, and both sides of the inner surface of the slot are arranged obliquely.

[0013] Further, the closing component includes a moving contact head sliding on one side of the upper surface of the mounting base and a static contact head fixed on the other side of the upper surface of the mounting base. On the sides of the moving contact head and the static contact head away from each other, wiring seats are fixedly connected. On the side of the moving contact head close to the static contact head, two conductive posts are fixedly connected. An installation groove is formed inside the static contact head. On one side of the inner surface of the installation groove, two first contact points are fixedly connected. A replacement module is inserted into the installation groove. On one side of the replacement module, two slotted openings are formed. On the other side of the replacement module, two conductive sleeves are formed. On the inner surface of the slotted opening, a second contact point is fixedly connected. A cutting component is arranged at the bottom of the moving contact head.

[0014] Further, the replacement module is adapted to the installation groove. The first contact point is located inside the slotted opening. One side of the first contact point is in contact with one side of the second contact point. The conductive post and the conductive sleeve are adapted to each other. On the front and rear sides of the upper surface of the mounting base, slide rails are fixedly connected. The moving contact head is slidably arranged on the slide rails.

[0015] Further, the cutting component includes a chute formed on the lower surface of the moving contact head and a receiving groove formed on one side of the static contact head. On the inner surface of the receiving groove, two second springs are fixedly connected. On one side of the two second springs, a top plate is fixedly connected. A chute is formed at the inner top of the chute. At the inner top of the chute, a second servo motor is fixedly connected. The output end of the second servo motor is fixedly connected with a second threaded rod. A U-shaped plate is threadedly connected to the outer surface of the second threaded rod.

[0016] Further, the U-shaped plate slides inside the chute. The top of the internally threaded sleeve block extends into the chute through the inside of the through groove. The U-shaped plate is sleeved on the top of the internally threaded sleeve block. Another control switch controls the opening and closing of the second servo motor.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In this solution, by setting up a fire extinguishing component, when an open fire appears on the disconnector, the flame melts the fusing rope. Through the transmission support rod, the control switch is turned on. The control switch is powered on to open the solenoid valve to work, so that the carbon dioxide ejected by the nozzle quickly sprays towards the fire source. After the liquid carbon dioxide gasifies, a large amount of carbon dioxide gas will be released, quickly increasing the carbon dioxide concentration in the surrounding environment and reducing the oxygen concentration, making combustion impossible to proceed. During the gasification process, a large amount of heat will be absorbed, thereby reducing the temperature of the burning object and the burning rate, and even stopping the combustion, timely containing the fire at the source and avoiding the expansion of the fire causing economic losses.

[0019] 2. This solution expands the range of carbon dioxide spraying from the nozzle by setting a swing component, so that the guide pipe and the nozzle swing synchronously. It can not only spray at the fire source to extinguish the fire immediately, but also quickly reduce the temperature inside the protective shell, avoiding the problem of the nozzle being unable to spray at the fire source, causing the fire to spread, and the contact switch being damaged over a large area and unusable.

[0020] 3. This solution sets up a detection component. When the seal inside the feed valve is worn, it will cause the leakage of carbon dioxide inside the carbon dioxide pressurization chamber. The gas detection sensor detects the leakage of carbon dioxide and sends a signal to the terminal to promptly remind the staff to inspect and replace the feed valve, avoid the continuous weakening of the pressure inside the carbon dioxide pressurization chamber, prevent the nozzle from being unable to spray carbon dioxide at a high speed, and ensure that when an open flame occurs inside the isolation switch, it can be extinguished in a timely and effective manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a cross-sectional structural schematic diagram of the present invention;

[0023] Figure 3 The fire extinguishing assembly structure of the present invention is shown in FIG. Figure 1 ;

[0024] Figure 4 The fire extinguishing assembly structure of the present invention is shown in FIG. Figure 2 ;

[0025] Figure 5 It is a schematic diagram of the structure of the detection component of the present invention;

[0026] Figure 6 The static contact structure of the present invention is shown in FIG. Figure 1 ;

[0027] Figure 7 The static contact structure of the present invention is shown in FIG. Figure 2 ;

[0028] Figure 8 It is a schematic diagram of the structure of the replacement module of the present invention;

[0029] Fig. 9 For the present invention Figure 2 A is an enlarged structural diagram of FIG.

[0030] Description of the numbers in the figure:

[0031] 1. Mounting seat; 2. Protective shell; 3. Mounting compartment;

[0032] 4. Fire extinguishing assembly; 41. Carbon dioxide pressurized chamber; 42. Hose; 43. Solenoid valve; 44. Side plate; 45. Feed valve;

[0033] 46. Swing assembly; 461. First servo motor; 462. Rotating shaft; 463. First gear; 464. Second gear; 465. Transmission shaft;

[0034] 47. Detection assembly; 471. Fixed cylinder; 472. Insert block; 473. Gas detection sensor; 474. Slot;

[0035] 48. Fuse rope; 49. Diversion pipe; 410. Nozzle; 411. Support rod; 412. First spring; 413. C-shaped plate; 414. First threaded rod; 415. Extrusion plate; 416. Support plate; 417. Control switch;

[0036] 5. Closing assembly; 51. Moving contact head; 52. Static contact head; 53. Conductive column; 54. Replacement module; 55. Terminal block;

[0037] 56. Cutting-off assembly; 561. Receiving groove; 562. Top plate; 563. Second spring; 564. Second servo motor; 565. Second threaded rod; 566. C-shaped plate; 567. Chute;

[0038] 57. Conductive sleeve; 58. Installation groove; 59. First contact point; 510. Second contact point; 511. Groove;

[0039] 6. Third threaded rod; 7. Wire passing hole; 8. Inner threaded sleeve block; 9. Through groove. Detailed implementation manners

[0040] 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 of 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 belong to the scope of protection of the present invention.

[0041] Please refer to Figures 1 to 9 , a high-voltage mobile DC disconnector, including a mounting base 1, a protective shell 2 is fixedly connected to the edge of the upper surface of the mounting base 1, a through groove 9 is opened at the inner bottom of the mounting base 1, a mounting chamber 3 is fixedly connected to the lower surface of the mounting base 1, a third threaded rod 6 is rotatably connected to one side of the mounting chamber 3, an inner threaded sleeve block 8 is threadedly connected to the outer surface of the third threaded rod 6, wire passing holes 7 are opened on both sides of the protective shell 2, a fire extinguishing assembly 4 for extinguishing fire is arranged at the inner top of the protective shell 2, and a closing assembly 5 is arranged on the upper surface of the mounting base 1.

[0042] As Figure 2 - Figure 4 As shown, the fire extinguishing assembly 4 includes a carbon dioxide pressurizing chamber 41 fixed on the top of the protective shell 2, a support rod 411 fixed on the middle of one side of the inner surface of the protective shell 2, and a detection assembly 47 fixed on the upper surface of the protective shell 2. A side plate 44 is fixedly provided on the lower surface of the carbon dioxide pressurizing chamber 41, and a solenoid valve 43 is rotatably connected to one side of the side plate 44. A guide tube 49 is fixedly connected to the bottom of the solenoid valve 43, and a nozzle 410 is connected to the outer surface of the guide tube 49. A hose 42 is connected to the top of the solenoid valve 43. A feed valve 45 is fixedly connected to the inner top of the carbon dioxide pressurizing chamber 41, a first spring 412 is sleeved on the outer surface of the support rod 411, and a C-shaped plate 413 is slidably sleeved on the outer surface of the support rod 411. A control switch 417 is fixedly connected to one side of the inner surface of the C-shaped plate 413, and a fixing component is provided on one side of the C-shaped plate 413, and a fuse rope 48 is provided on the fixing component.

[0043] The fixing component includes a first threaded rod 414 rotated in the middle of one side of the C-shaped plate 413 and a support plate 416 fixed on one side of the C-shaped plate 413. The bottom of the first threaded rod 414 is rotatably connected to an extrusion plate 415, and the bottom of the extrusion plate 415 is provided with anti-slip grooves. The extrusion plate 415 squeezes and fixes one end of the fuse rope 48, and a swing assembly 46 is provided at the edge of one side of the inner surface of the protective shell 2.

[0044] There are two support rods 411, and the first threaded rod 414 is connected to the C-shaped plate 413 through a horizontal plate. The first threaded rod 414 and the horizontal plate are connected by threads. The two ends of the fuse rope 48 are respectively fixed by two extrusion plates 415. A control switch 417 controls the opening and closing of the solenoid valve 43. The top of the feed valve 45 extends out of the interior of the protective shell 2. The two ends of the first spring 412 are respectively fixedly connected to one side of the C-shaped plate 413 and the inner surface of the protective shell 2, and the first spring 412 is in a stretched state.

[0045] When the isolating switch is working, its internal temperature rises, causing the insulation material to be damaged, resulting in a fire. At the beginning of the fire, the burning flame will first fuse the fuse rope 48. At this time, the C-shaped plate 413 loses traction, and the first spring 412 quickly pulls the C-shaped plate 413 to slide on the outside of the support rod 411, driving the control switch 417 to approach the support rod 411. The control switch 417 is turned on the instant the support rod 411 contacts the control switch 417. The control switch 417 is energized to open the solenoid valve 43 to work. At this time, the high-pressure liquid carbon dioxide inside the carbon dioxide pressurization chamber 41 is The carbon dioxide enters the interior of the guide tube 49 through the hose 42 and the solenoid valve 43, and is quickly ejected through the nozzle 410. The carbon dioxide ejected from the nozzle 410 is quickly sprayed toward the fire source. After the liquid carbon dioxide is vaporized, a large amount of carbon dioxide gas is released, which rapidly increases the carbon dioxide concentration in the surrounding environment and reduces the oxygen concentration, making combustion impossible. The vaporization of liquid carbon dioxide is an endothermic process. A large amount of heat is absorbed during the vaporization process, thereby reducing the temperature of the burning object, reducing the combustion rate, and even stopping the combustion, thereby curbing the fire at the source in time to avoid the expansion of the fire and causing economic losses.

[0046] like Figure 3 As shown, the swing assembly 46 includes a first servo motor 461 fixed to one side of the inner surface of the protective shell 2 and a transmission shaft 465 rotating inside the side plate 44, the output end of the first servo motor 461 is fixedly connected to the rotating shaft 462, one side of the rotating shaft 462 is fixedly connected to the first gear 463, one side of the transmission shaft 465 is fixedly connected to the second gear 464, one side of the transmission shaft 465 is fixedly connected to the solenoid valve 43, the second gear 464 and the first gear 463 are meshed with each other, and a control switch 417 controls the opening and closing of the first servo motor 461.

[0047] When the nozzle 410 sprays carbon dioxide toward the fire source, since the spraying angle of the nozzle 410 is fixed, and the fire location inside the disconnector is random, the nozzle 410 can spray carbon dioxide immediately, but the spraying position is inaccurate, which greatly reduces the effect of carbon dioxide fire extinguishing.

[0048] When the isolating switch catches fire for the first time, the fuse rope 48 is melted by the open flame, so that one of the control switches 417 is opened by the support rod 411, and the control switch 417 opens the control solenoid valve 43 to start, and at the same time, the first servo motor 461 is turned on, and the first servo motor 461 works. The first servo motor 461 drives the first gear 463 to rotate forward and reverse through the rotating shaft 462, and the first gear 463 drives the transmission shaft 465 to rotate forward and reverse through the second gear 464. The transmission shaft 465 drives the solenoid valve 43 to swing back and forth around the transmission shaft 465 between the two side plates 44, and drives the guide pipe 49 and the nozzle 410 to swing synchronously, so that the range of the nozzle 410 to spray carbon dioxide is expanded, which can not only spray at the fire source to extinguish the fire in the first time, but also quickly reduce the internal temperature of the protective shell 2, so as to avoid the nozzle 410 from being unable to spray at the fire source to cause the fire to expand, and the contact switch is damaged over a large area and cannot be used.

[0049] like Figure 5 As shown, the detection component 47 includes a fixed cylinder 471 fixed on the upper surface of the protective shell 2, and the outer surface of the fixed cylinder 471 is symmetrically provided with slots 474, and the inside of the slots 474 is slidably connected with an insert block 472, and a gas detection sensor 473 is fixedly connected to the side where the two insert blocks 472 are close to each other.

[0050] A magnet is disposed at the bottom of the insert block 472 , the feed valve 45 is located inside the fixed cylinder 471 , the gas detection sensor 473 is located above the feed valve 45 , and both sides of the inner surface of the slot 474 are disposed obliquely.

[0051] All the liquid carbon dioxide is stored inside the carbon dioxide pressurization chamber 41, resulting in a high pressure inside the carbon dioxide pressurization chamber 41, which makes the pressure inside the feed valve 45 too high. When the sealing components inside the feed valve 45 are worn, the carbon dioxide inside the carbon dioxide pressurization chamber 41 will leak, causing the pressure inside the carbon dioxide pressurization chamber 41 to continue to weaken, making it impossible to spray carbon dioxide at a high speed inside the nozzle 410, avoiding the situation where the fire cannot be extinguished in time.

[0052] To this end, a fixed cylinder 471 is arranged around the feed valve 45, and a gas detection sensor 473 is arranged above the feed valve 45. When a leak occurs inside the feed valve 45, carbon dioxide will enter the inside of the fixed cylinder 471 and be detected by the gas detection sensor 473. When the gas detection sensor 473 detects the leakage of carbon dioxide, it transmits a signal to the terminal, and promptly reminds the staff to inspect the feed valve 45. When it is necessary to fill the interior of the carbon dioxide pressurization chamber 41 with gas, pull the plug block 472 upward to remove it from the inside of the slot 474, remove the gas detection sensor 473 from above the feed valve 45, and fill the gas through the feed valve 45 to avoid obstruction to the filling of the carbon dioxide pressurization chamber 41. The gas detection sensor 473 can detect whether carbon dioxide is leaking in time to avoid continuous leakage of carbon dioxide, which can effectively ensure the internal pressure of the carbon dioxide pressurization chamber 41, ensure that the nozzle 410 sprays a high-speed airflow, and promptly and effectively extinguish the open fire inside the isolation switch.

[0053] like Figure 7 - Figure 8 As shown, the closing component 5 includes a moving contact head 51 sliding on one side of the upper surface of the mounting base 1 and a static contact head 52 fixed on the other side of the upper surface of the mounting base 1, and the sides of the moving contact head 51 and the static contact head 52 away from each other are fixedly connected to a terminal seat 55, and the side of the moving contact head 51 close to the static contact head 52 is fixedly connected to two conductive columns 53, and the interior of the static contact head 52 is provided with a mounting groove 58, and one side of the inner surface of the mounting groove 58 is fixedly connected to two first contact points 59, and a replacement module 54 is inserted into the interior of the mounting groove 58, and one side of the replacement module 54 is provided with two slots 511, and the other side of the replacement module 54 is provided with two conductive sleeves 57, and the inner surface of the slot 511 is fixedly connected to the second contact point 510, and a cutting component 56 is provided at the bottom of the moving contact head 51.

[0054] The replacement module 54 is adapted to the mounting groove 58, the first contact point 59 is located inside the slot 511, one side of the first contact point 59 is in contact with one side of the second contact point 510, the conductive column 53 is adapted to the conductive sleeve 57, and the front and rear sides of the upper surface of the mounting seat 1 are fixedly connected with a slide rail, and the moving contact head 51 is slidably set on the slide rail.

[0055] When the isolating switch is closed, an arc will be generated at the moment when the conductive column 53 and the conductive sleeve 57 come into contact. The arc will melt the surface of the conductive sleeve 57, causing the contact area to become smaller, the local current to become larger, and the internal temperature of the isolating switch to rise, which is likely to cause safety hazards. The conductive sleeve 57 needs to be replaced in time, but the cost of replacing the entire static contact 52 is high, which is not economical;

[0056] Therefore, after the disconnector is used for a certain period, the conductive sleeve 57 needs to be replaced. At this time, the replacement module 54 is pulled out from the inside of the installation groove 58, and the whole replacement module 54 is replaced, so as to avoid replacing the whole static contact head 52, reduce the replacement cost, and be more convenient during replacement.

[0057] As Figure 7 and Fig. 9 shown, the cutting component 56 includes a sliding groove 567 opened on the lower surface of the moving contact head 51 and a receiving groove 561 opened on one side of the static contact head 52. Two second springs 563 are fixedly connected to the inner surface of the receiving groove 561. One side of the two second springs 563 is fixedly connected to a top plate 562. A sliding groove 567 is opened at the inner top of the sliding groove 567. A second servo motor 564 is fixedly connected to the inner top of the sliding groove 567. The output end of the second servo motor 564 is fixedly connected to a second threaded rod 565. A C-shaped plate 566 is threadedly connected to the outer surface of the second threaded rod 565.

[0058] The C-shaped plate 566 slides inside the sliding groove 567. The top of the inner threaded sleeve block 8 penetrates through the inside of the through groove 9 and extends into the sliding groove 567. The C-shaped plate 566 is sleeved on the top of the inner threaded sleeve block 8. Another control switch 417 controls the opening and closing of the second servo motor 564.

[0059] When a fire breaks out inside the moving contact head 51 and the static contact head 52, but the circuit is still in a closed state, causing the inside of the moving contact head 51 and the static contact head 52 to continuously heat up, and the current will increase due to a short circuit of the wire, damaging the equipment. When the fuse rope 48 is first burned out, another control switch 417 is also turned on, starting the second servo motor 564 to drive the second threaded rod 565 to rotate, driving the C-shaped plate 566 to move into the sliding groove 567, so that the C-shaped plate 566 moves out from the top of the inner threaded sleeve block 8, releasing the clamping effect on the inner threaded sleeve block 8. Since the moving contact head 51 and the static contact head 52 are in contact, the second spring 563 is in a compressed state. When the inner threaded sleeve block 8 and the C-shaped plate 566 are separated from each other, the two second springs 563 quickly push the moving contact head 51 to one side through the top plate 562, disengaging the conductive column 53 from the inside of the conductive sleeve 57, disconnecting the circuit, and preventing the disconnector from continuing to burn due to continuous current flow.

[0060] Usage method: First, carbon dioxide can be sprayed on the combustion site through the nozzle 410 to extinguish the fire source. At the same time, under the cooperation of the swinging component 46, the nozzle 410 is driven to swing continuously, expanding the spraying range, and the detection component 47 timely detects whether there is carbon dioxide leakage at the feed valve 45;

[0061] Then, by quickly pulling the replacement module 54 out from the inside of the static contact 52, the conductive sleeve 57 is replaced to improve the safety of the disconnector during operation. By cutting off the coordination between the components of the assembly 56, the dynamic contact 51 and the static contact 52 can be separated in time in the event of a fire to avoid continuous current flow in the circuit.

[0062] The above is only a preferred specific implementation of the present invention; however, the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and its improved conception within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A high-voltage mobile DC disconnect switch, comprising a mounting seat (1), a protective shell (2) is fixedly connected to the edge of the upper surface of the mounting seat (1), a through groove (9) is provided at the inner bottom of the mounting seat (1), a mounting chamber (3) is fixedly connected to the lower surface of the mounting seat (1), a third threaded rod (6) is rotatably connected to one side of the mounting chamber (3), an inner threaded sleeve block (8) is threadedly connected to the outer surface of the third threaded rod (6), and threading holes (7) are provided on both sides of the protective shell (2); Features: A fire extinguishing assembly (4) for extinguishing fire is arranged on the top of the protective shell (2), and a closing assembly (5) is arranged on the upper surface of the mounting seat (1); The fire extinguishing assembly (4) comprises a carbon dioxide pressurizing chamber (41) fixed to the top of the protective shell (2), a support rod (411) fixed to the middle of one side of the inner surface of the protective shell (2), and a detection assembly (47) fixed to the upper surface of the protective shell (2); a side plate (44) is fixedly provided on the lower surface of the carbon dioxide pressurizing chamber (41); a solenoid valve (43) is rotatably connected to one side of the side plate (44); a guide pipe (49) is fixedly connected to the bottom of the solenoid valve (43); a nozzle (410) is connected to the outer surface of the guide pipe (49); a hose (42) is connected to the top of the solenoid valve (43); and a feed valve (45) is fixedly connected to the inner top of the carbon dioxide pressurizing chamber (41).

2. A high voltage mobile DC isolating switch according to claim 1, characterized in that: The outer surface of the support rod (411) is sleeved with a first spring (412), the outer surface of the support rod (411) is slidably sleeved with a C-shaped plate (413), one side of the inner surface of the C-shaped plate (413) is fixedly connected with a control switch (417), one side of the C-shaped plate (413) is provided with a fixing component, and the fixing component is provided with a fuse rope (48); The fixing component comprises a first threaded rod (414) rotating in the middle of one side of the C-shaped plate (413) and a support plate (416) fixed on one side of the C-shaped plate (413); the bottom of the first threaded rod (414) is rotatably connected to an extrusion plate (415); the bottom of the extrusion plate (415) is provided with anti-slip grooves; the extrusion plate (415) extrudes and fixes one end of the fuse rope (48); and a swing component (46) is provided at the edge of one side of the inner surface of the protective shell (2).

3. A high voltage mobile DC isolating switch according to claim 2, characterized in that: There are two support rods (411), the first threaded rod (414) is connected to the C-shaped plate (413) through a transverse plate, the first threaded rod (414) and the transverse plate are connected by threads, the two ends of the fuse rope (48) are respectively fixed by two extrusion plates (415), a control switch (417) controls the opening and closing of the solenoid valve (43), the top of the feed valve (45) extends out of the interior of the protective shell (2), the two ends of the first spring (412) are respectively fixedly connected to one side of the C-shaped plate (413) and the inner surface of the protective shell (2), and the first spring (412) is in a stretched state.

4. A high voltage mobile DC isolating switch according to claim 3, characterized in that: The swing assembly (46) comprises a first servo motor (461) fixed to one side of the inner surface of the protective shell (2) and a transmission shaft (465) rotating inside the side plate (44); the output end of the first servo motor (461) is fixedly connected to the rotating shaft (462); one side of the rotating shaft (462) is fixedly connected to the first gear (463); one side of the transmission shaft (465) is fixedly connected to the second gear (464); one side of the transmission shaft (465) is fixedly connected to the solenoid valve (43); the second gear (464) and the first gear (463) are meshed with each other; and a control switch (417) controls the opening and closing of the first servo motor (461).

5. A high voltage mobile DC isolating switch according to claim 4, characterized in that: The detection assembly (47) comprises a fixed cylinder (471) fixed on the upper surface of the protective shell (2), the outer surface of the fixed cylinder (471) is symmetrically provided with slots (474), the interior of the slots (474) is slidably connected with plug blocks (472), and the gas detection sensors (473) are fixedly connected to the sides of the two plug blocks (472) close to each other.

6. A high voltage mobile DC isolating switch according to claim 5, characterized in that: A magnet is disposed at the bottom of the insert block (472), the feed valve (45) is located inside the fixed cylinder (471), the gas detection sensor (473) is located above the feed valve (45), and both sides of the inner surface of the slot (474) are inclined.

7. A high voltage mobile DC isolating switch according to claim 6, characterized in that: The closing component (5) comprises a moving contact head (51) sliding on one side of the upper surface of the mounting seat (1) and a static contact head (52) fixed on the other side of the upper surface of the mounting seat (1); the sides of the moving contact head (51) and the static contact head (52) away from each other are both fixedly connected to a wiring seat (55); the side of the moving contact head (51) close to the static contact head (52) is fixedly connected to two conductive pillars (53); a mounting groove (58) is provided inside the static contact head (52); one side of the inner surface of the mounting groove (58) is fixedly connected to two first contact points (59); a replacement module (54) is inserted inside the mounting groove (58); one side of the replacement module (54) is provided with two slots (511); the other side of the replacement module (54) is provided with two conductive sleeves (57); the inner surface of the slot (511) is fixedly connected to a second contact point (510); and a cutting component (56) is provided at the bottom of the moving contact head (51).

8. The high-voltage mobile DC disconnector according to claim 7, characterized in that: The replacement module (54) and the mounting groove (58) are adapted to each other, the first contact point (59) is located inside the slot (511), one side of the first contact point (59) and one side of the second contact point (510) are in contact with each other, the conductive column (53) and the conductive sleeve (57) are adapted to each other, and the front and rear sides of the upper surface of the mounting seat (1) are fixedly connected with a slide rail, and the movable contact head (51) is slidably arranged on the slide rail.

9. A high-voltage mobile DC disconnector according to claim 8, characterized in that: The cutting assembly (56) includes a sliding groove (567) formed on the lower surface of the moving contact head (51) and a receiving groove (561) formed on one side of the static contact head (52). Two second springs (563) are fixedly connected to the inner surface of the receiving groove (561). One side of the two second springs (563) is fixedly connected to a top plate (562). A sliding groove (567) is formed at the inner top of the sliding groove (567). A second servo motor (564) is fixedly connected to the inner top of the sliding groove (567). The output end of the second servo motor (564) is fixedly connected to a second threaded rod (565). A U-shaped plate (566) is threadedly connected to the outer surface of the second threaded rod (565).

10. A high voltage mobile DC isolating switch according to claim 9, characterized in that: The U-shaped plate (566) slides inside the sliding groove (567). The top of the internally threaded sleeve block (8) extends into the sliding groove (567) through the inside of the through groove (9). The U-shaped plate (566) is sleeved on the top of the internally threaded sleeve block (8). Another control switch (417) controls the opening and closing of the second servo motor (564).

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