CN112420464B - High-voltage distribution fuse with high-current fusing and self-repairing functions - Google Patents
High-voltage distribution fuse with high-current fusing and self-repairing functions Download PDFInfo
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- CN112420464B CN112420464B CN202011217022.5A CN202011217022A CN112420464B CN 112420464 B CN112420464 B CN 112420464B CN 202011217022 A CN202011217022 A CN 202011217022A CN 112420464 B CN112420464 B CN 112420464B
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- helium
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- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 96
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 96
- 239000011734 sodium Substances 0.000 claims abstract description 96
- 238000007789 sealing Methods 0.000 claims abstract description 67
- 239000001307 helium Substances 0.000 claims abstract description 57
- 229910052734 helium Inorganic materials 0.000 claims abstract description 57
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims abstract description 57
- 229910052751 metal Inorganic materials 0.000 claims abstract description 36
- 239000002184 metal Substances 0.000 claims abstract description 36
- 230000000694 effects Effects 0.000 claims abstract description 15
- 230000008439 repair process Effects 0.000 claims abstract description 12
- 230000000670 limiting effect Effects 0.000 claims abstract description 8
- 238000000034 method Methods 0.000 claims description 19
- 230000008569 process Effects 0.000 claims description 17
- 238000001816 cooling Methods 0.000 claims description 6
- 238000002309 gasification Methods 0.000 claims description 5
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000007711 solidification Methods 0.000 claims 1
- 230000008023 solidification Effects 0.000 claims 1
- 230000000153 supplemental effect Effects 0.000 claims 1
- 230000008016 vaporization Effects 0.000 description 11
- 238000009834 vaporization Methods 0.000 description 10
- 239000000155 melt Substances 0.000 description 9
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000001012 protector Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- -1 is passive repair Chemical compound 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/26—Magazine arrangements
- H01H85/28—Magazine arrangements effecting automatic replacement
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/0078—Security-related arrangements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/06—Fusible members characterised by the fusible material
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/30—Means for indicating condition of fuse structurally associated with the fuse
Landscapes
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Fuses (AREA)
Abstract
The invention discloses a high-voltage distribution fuse with high-current fusing and self-repairing, which relates to the technical field of distribution equipment. According to the invention, the fuse is directly rotated to be replaced under the pushing of pressure generated during fusing, so that active repair is realized, the fusing effect of the repaired fuse can be effectively ensured, recondensed metal sodium is subjected to multiple supplementary treatment before use, the repair treatment on different conditions of inner holes or surface concave-convex of the metal sodium can be effectively performed, the uniformity of mass distribution of cooled and solidified metal sodium can be effectively enhanced, the later fusing effect is further enhanced, whether the fuse is normally fused or the self-repaired state can be judged through the color passing through the fuse tube, the double sealing treatment on the limiting sleeve and the inner wall of the fuse tube can be performed, helium leakage is avoided, and sufficient pushing force is ensured.
Description
Technical Field
The invention relates to the technical field of power distribution equipment, in particular to a high-voltage power distribution fuse with high-current fusing and self-repairing functions.
Background
Fuses are the simplest protection appliances that are used to protect electrical equipment from overload and short-circuit currents; the high voltage fuses for some specialized devices should be selected from a specialized family. The fuse is an electric appliance which fuses a melt by heat generated by the fuse when a current exceeds a predetermined value to open a circuit. The fuse melts the melt by the heat generated by the fuse after the current exceeds a specified value for a period of time, so that the circuit is disconnected; a current protector is made by applying the principle. The fuse is widely applied to high-low voltage distribution systems, control systems and electric equipment, is used as a protector for short circuit and overcurrent, and is one of the most common protection devices. At present, a self-resetting fuse exists, and metal sodium is used as a melt, so that the fuse can be automatically repaired.
The existing high-voltage distribution fuse with high current fusing and self-repairing can be repaired only after cooling and solidifying by means of metal sodium, mainly is passive repair, has poor repair effect, and the later fusing function mainly depends on the cooling and solidifying metal sodium, but the mass distribution of the cooling and solidifying metal sodium is not uniform enough, and the later fusing effect is poor.
Disclosure of Invention
The invention aims to provide a high-voltage distribution fuse with high-current fusing and self-repairing so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a heavy current fuses and self-repairing's high voltage distribution fuse, includes the fuse tube, fuse tube outer wall one end is equipped with first installation head, the fuse tube outer wall other end is equipped with the second installation head, the inside swing joint's of being equipped with of fuse tube fuse mounting bracket, first installation head surface runs through and is equipped with first connecting terminal, second installation head surface runs through and is equipped with second connecting terminal, first connecting terminal with second connecting terminal all respectively with fuse mounting bracket both ends contact connection.
Further, the fuse mounting rack comprises an insulating sleeve, a first cavity is formed in the insulating sleeve, a second cavity is formed between the insulating sleeve and the fuse tube, a plurality of mounting holes are formed in the surface of the insulating sleeve in the first cavity and the second cavity, helium is filled in the first cavity and the second cavity, the helium penetrates through one mounting hole, sodium strips are left in the mounting hole, the outer wall of the mounting hole is close to one side of the first cavity, a first through groove is formed in one side of the first through groove, a hemispherical groove is formed in one end of the mounting hole, the hemispherical groove is communicated with the first cavity, the outer wall of the mounting hole is close to one side of the second cavity, a second through groove is communicated with the second cavity, a pushing frame is arranged on one side of the second through groove, and the mounting hole and the pushing frame are annularly arranged on the outer wall of the insulating sleeve.
Further, the length of first logical groove is less than the length of second logical groove for first logical groove is shorter with the route that the second leads to the groove, makes high temperature gasification sodium strip move to the mounting hole outside along first logical groove more easily, the internal diameter of hemisphere groove is greater than the internal diameter of first logical groove, makes cooperation between first logical groove and the hemisphere groove constitute loudspeaker form structure, and it is higher to make high temperature gasification sodium strip enter into the inside efficiency of first cavity when outwards arranging along first logical groove.
Further, the two ends of the mounting hole are symmetrically provided with connectors, the sodium strip is arranged between the two connectors, wiring treatment of the connectors at the two ends of the mounting hole is guaranteed, and circuit connection can be achieved when the sodium strip is communicated with the two connectors.
Further, the second through groove is of an arc-shaped structure, the opening of the second through groove faces towards the pushing frame close to one side of the mounting hole, helium gas which is pushed out of the second through groove can be guaranteed to directly impact the pushing frame, and the pushing frame is more sufficient in power.
Further, the inner wall of the insulating sleeve is provided with an arc-extinguishing sleeve on the inner wall of the mounting hole, the arc-extinguishing sleeve can conduct arc-extinguishing treatment on the sodium strips inside the mounting hole, the outward diffusion of the sodium strips during current conveying is avoided, and the safety of equipment is improved.
Further, the pushing frame comprises a limit sleeve, an air inlet is formed in one side, close to the second through groove, of the outer wall of the limit sleeve, a first sealing strip and a second sealing strip are arranged on one side, away from the first cavity, of the outer wall of the limit sleeve, the first sealing strip is arranged on one side, close to the air inlet, of the outer wall of the limit sleeve, and the second sealing strip is arranged on one side, away from the air inlet, of the outer wall of the limit sleeve.
Further, the first sealing strip with the cross section size of second sealing strip equals, and first sealing strip and second sealing strip seal effect are the same, guarantee to carry out dual seal treatment between limit sleeve and the fuse tube inner wall, guarantee that helium can strike the transport to limit sleeve, the cross section external diameter of first sealing strip is less than limit sleeve's cross section internal diameter can effectively reduce first sealing strip and second sealing strip to limit sleeve's burden, guarantee that first sealing strip and second sealing strip can guarantee sealing performance when moving along with limit sleeve.
Further, the length of first sealing strip with the length of second sealing strip equals, and first sealing strip is the same with second sealing strip sealed effect, guarantees to carry out double seal processing between limit sleeve and the fuse tube inner wall, the length of first sealing strip is greater than limit sleeve's length, guarantees that first sealing strip and second sealing strip can carry out comprehensive seal processing to limit sleeve, avoids helium to reveal from limit sleeve's both ends, improves sealing performance.
Further, the volume between two adjacent limit sleeves is smaller than the volume of the mounting hole, so that the volume of a sodium strip inside the mounting hole is larger than the volume between two adjacent limit sleeves, the volume of the body device when the sodium strip is gasified at high temperature under abnormal heavy current is larger, helium with the volume between the two limit sleeves can be impacted into the second cavity, and the limit sleeves can be guaranteed to be shifted to the position of the adjacent limit sleeve.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, through arranging the fuse tube, the fuse wire mounting frame, the insulating sleeve, the first cavity, the mounting hole, the first through groove, the hemispherical groove, the second through groove, the pushing frame and the sodium strip, the sodium strip is changed into plasma vapor in a high-temperature high-pressure state from solid during fusing, the resistivity is rapidly increased, so that a strong current limiting effect is achieved on high-voltage current, current is instantaneously broken, the sodium strip can generate a large amount of pressure in the process of changing into the plasma vapor in the high-temperature high-pressure state, helium gas conveyed from the second through groove directly impacts the pushing frame, the rotating adjustment of the insulating sleeve is realized, the melt is directly rotated under the pushing of the pressure generated during fusing, active repair is realized, the fusing effect of the fuse after repair can be effectively ensured, meanwhile, the sodium is continuously rotated in the process of self-repair by introducing the plasma vapor in the helium gas before, the metal sodium in annular distribution is gasified and condensed in the process, the reconditioning is carried out by multiple times before use, the inside the metal sodium or the surface of the metal sodium is uniformly distributed in the state after the uniform cooling state is carried out, the color of the normal state of fusing can be further strengthened, and the color of the fuse tube is in the normal state after the fusing is fused, and the color of the normal state is completely cooled;
2. according to the invention, the limit sleeve, the air inlet, the first sealing strip and the second sealing strip are arranged, so that the helium performs rotary impact along the limit sleeve, the pushing force on the pushing frame can be enhanced, the rotary displacement of the insulation sleeve is ensured to be enough to replace the displacement of the melt, the double sealing treatment can be performed on the limit sleeve and the inner wall of the fuse tube, the leakage of the helium is avoided, and the sufficient pushing force is ensured.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:
FIG. 1 is a front view of the entire present invention;
FIG. 2 is a front cross-sectional view of the entirety of the present invention;
FIG. 3 is an enlarged schematic view of the present invention at A in FIG. 2;
FIG. 4 is an enlarged schematic view of the present invention at B in FIG. 2;
FIG. 5 is a side view of the fuse mount of the present invention;
FIG. 6 is a side cross-sectional view of the fuse mount and fuse tube of the present invention;
FIG. 7 is an enlarged schematic view of the present invention at C in FIG. 6;
FIG. 8 is an enlarged schematic view of the present invention at D in FIG. 6;
in the figure: 1. a fuse tube; 2. a first mounting head; 3. a second mounting head; 4. a fuse mounting rack; 5. a first connection terminal; 6. a second connection terminal; 7. an insulating sleeve; 8. a first cavity; 9. a second cavity; 10. a mounting hole; 11. a first through groove; 12. a hemispherical groove; 13. a second through slot; 14. a pushing frame; 15. arc extinguishing sleeve; 16. a limit sleeve; 17. an air inlet; 18. a first sealing strip; 19. a second sealing strip; 20. a connector; 21. sodium bars.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The high-voltage distribution fuse with high current fusing and self-repairing functions as shown in figures 1-3 and 5-7 comprises a fuse tube 1, wherein one end of the outer wall of the fuse tube 1 is provided with a first mounting head 2, the other end of the outer wall of the fuse tube 1 is provided with a second mounting head 3, the inside of the fuse tube 1 is provided with a movably connected fuse mounting frame 4, the surface of the first mounting head 2 is provided with a first connecting terminal 5 in a penetrating way, the surface of the second mounting head 3 is provided with a second connecting terminal 6 in a penetrating way, the first connecting terminal 5 and the second connecting terminal 6 are respectively connected with two ends of the fuse mounting frame 4 in a contact way, the fuse mounting frame 4 comprises an insulating sleeve 7, a first cavity 8 is arranged inside the insulating sleeve 7, a second cavity 9 is arranged between the insulating sleeve 7 and the fuse tube 1, the surface of the insulating sleeve 7 is provided with a plurality of mounting holes 10 between the first cavity 8 and the second cavity 9, helium is filled in the first cavity 8 and the second cavity 9, the helium penetrates through one mounting hole 10, sodium strips 21 are arranged in the rest of the mounting holes 10, a first through groove 11 is arranged on one side, close to the first cavity 8, of the outer wall of the mounting hole 10, a hemispherical groove 12 is arranged on one end, far away from the mounting hole 10, of the outer wall of the first through groove 11, the hemispherical groove 12 is communicated with the first cavity 8, a second through groove 13 is arranged on one side, close to the second cavity 9, of the outer wall of the mounting hole 10, the second through groove 13 is communicated with the second cavity 9, a pushing frame 14 is arranged on one side, close to the second through groove 13, of the outer wall of the insulating sleeve 7, the pushing frame 14 is arranged in the second cavity 9, the mounting holes 10 and the pushing frame 14 are respectively arranged on the outer wall of the insulating sleeve 7 in a ring shape.
The length of first logical groove 11 is less than the length of second logical groove 13 for first logical groove 11 is shorter with the route than second logical groove 13, makes high temperature gasification sodium strip 21 move to mounting hole 10 outside along first logical groove 11 more easily, the internal diameter of hemisphere groove 12 is greater than the internal diameter of first logical groove 11, makes cooperation between first logical groove 11 and the hemisphere groove 12 constitute loudspeaker-like structure, makes high temperature gasification sodium strip 21 enter into the inside efficiency of first cavity 8 when outwards arranging along first logical groove 11 higher.
The two ends of the mounting hole 10 are symmetrically provided with connectors 20, the sodium strip 21 is arranged between the two connectors 20, so that the connectors 20 are ensured to be connected at the two ends of the mounting hole 10, and the connection of the circuits can be realized when the sodium strip 21 is communicated with the two connectors 20.
The second through groove 13 is of an arc structure, the opening of the second through groove 13 faces the pushing frame 14 near one side of the mounting hole 10, so that helium gas which is flushed out of the second through groove 13 can be ensured to directly impact the pushing frame 14, and the pushing frame 14 is more powerful.
The inner wall of the insulating sleeve 7 is provided with an arc extinguishing sleeve 15 on the inner wall of the mounting hole 10, the arc extinguishing sleeve 15 can carry out arc extinguishing treatment on the sodium strip 21 inside the mounting hole 10, the sodium strip 21 is prevented from being outwards diffused when current is conveyed, and the safety of equipment is improved.
The implementation mode specifically comprises the following steps: when in use, the fuse tube 1, the fuse mounting frame 4, the insulating sleeve 7, the first cavity 8, the mounting hole 10, the first through groove 11, the hemispherical groove 12, the second through groove 13, the pushing frame 14 and the sodium bar 21 are arranged, the first mounting head 2 and the second mounting head 3 are respectively mounted and supported at two ends of the fuse tube 1, the fuse mounting frame 4 is movably mounted inside the fuse tube 1, the first connecting terminal 5 and the second connecting terminal 6 can be in contact connection with one sodium bar 21 on the fuse mounting frame 4, so as to realize high-current fusing protection, when high-voltage high current passes through the fuse, the short-circuit current rapidly heats the sodium bar 21 in the circuit, the sodium bar 21 is changed from solid to plasma vapor in a high-temperature high-pressure state, the resistivity is rapidly increased, thereby playing a strong role in limiting the high-voltage current, and a great amount of pressure can be generated in the process of changing the sodium bar 21 into the plasma vapor in the high-temperature high-pressure state during instant breaking current, the plasma vapor of sodium in a high temperature and high pressure state is discharged outwards from the mounting hole 10 of the mounting position through the first through groove 11 and the hemispherical groove 12, the plasma vapor of sodium in a high temperature and high pressure state enters the inside of the first cavity 8, the molecular weight of helium is smaller than that of sodium, the plasma vapor of sodium in a high temperature and high pressure state can extrude the helium in the inside of the first cavity 8 outwards, the helium enters the inner side of the mounting hole 10 without the sodium strip 21 from the hemispherical groove 12 and the first through groove 11, then is extruded into the second cavity 9 from the inner side of the mounting hole 10 through the second through groove 13, the helium conveyed from the second through groove 13 directly impacts the pushing frame 14, the space pressure between the two pushing frames 4 positioned at two sides of the mounting hole 10 gradually increases, and a rotary pushing force is generated between the two pushing frames 4, can promote to push and push the frame 14 and rotate along fuse tube 1, and then realize the rotation regulation to insulating sleeve 7, be close to the impact force that pushing frame 4 who carries helium second through groove 13 received and be bigger for insulating sleeve 7's rotation direction uses two pushing frames 14 that receive helium impact to be the reference: rotating from the pushing frame 14 away from the helium transporting second through groove 13 to the other pushing frame 14; the plurality of sodium strips 21 rotate along with the insulating sleeve 7 when the fuse is used, the unused sodium strips 21 can directly rotate to the position of the sodium strips 21 which are fused and gasified, so that the self-repairing work of the fuse is realized, the other mounting hole 10 provided with the sodium strips 21 is aligned with the first connecting terminal 5 and the second connecting terminal 6 and is in contact and contact with each other to be connected, the automatic replacement of the melt in the fuse can be realized, the automatic repair of the fuse is realized, the melt is directly rotated under the pushing of the pressure generated during fusing, the active repair is realized, the fusing effect of the fuse after repair can be effectively ensured, meanwhile, the sodium is condensed in the mounting hole 10 before being led into helium after the plasma vapor in a high-temperature and high-pressure state is gradually cooled, the mounting hole 10 originally provided with the sodium strips 21 is evaporated into a cavity after the high-temperature heating treatment, and simultaneously, a conveying channel is provided for the helium after the next high-current fusing, in the self-repairing process of the device, the rotary adjustment of the insulating sleeve 7 can be realized, the annularly distributed metal sodium continuously performs rotary motion in the self-repairing process, the metal sodium is gasified, liquefied and condensed in the fusing process, the gasified metal sodium is continuously subjected to the supplementing treatment for the gasified, liquefied and condensed metal sodium in the front fusing, when the initially gasified, liquefied and condensed metal sodium in the device is rotationally moved to the initial circuit connection position, the metal sodium in the device is completely subjected to the gasifying, liquefying and condensing processes, the recondensed metal sodium is subjected to the supplementing treatment for a plurality of times before being used, the repairing treatment for the internal holes or the surface concave-convex different conditions of the metal sodium can be effectively enhanced, the quality distribution uniformity degree of the cooled, cooled and solidified metal sodium can be further enhanced, meanwhile, when helium is in a normal power-on state, the helium contacts with the normal power-on sodium strip 21 and is matched with the fuse tube 1, so that the sodium strip 21 is positioned in a discharge tube, the helium fills up the space of the fuse mounting frame 4, the rotation pushing of the fuse mounting frame 4 can be realized through the helium after the gasified volume expansion of the metal sodium, the power is ensured, the helium can emit pink light when in the normal power-on state, and when the helium is in a colorless state when in a fusing state, whether the fuse is fused normally or the state of self-repairing can be judged through the color passing through the fuse tube 1; the embodiment specifically solves the problems that the existing high-voltage distribution fuse which is fused by large current and self-repaired in the background technology can be repaired only after being cooled and solidified by means of metal sodium, the repair effect is mainly passive repair, the later fusing function is mainly based on the cooled and solidified metal sodium, the mass distribution of the cooled and solidified metal sodium is not uniform enough, and the later fusing effect is poor.
A high-voltage distribution fuse with high-current fusing and self-repairing function as shown in fig. 2, fig. 4, fig. 5-6 and fig. 8, wherein the pushing frame 14 comprises a limit sleeve 16, an air inlet 17 is arranged on one side, close to the second through groove 13, of the outer wall of the limit sleeve 16, a first sealing strip 18 and a second sealing strip 19 are arranged on one side, far away from the first cavity 8, of the outer wall of the limit sleeve 16, the first sealing strip 18 is arranged on one side, close to the air inlet 17, of the outer wall of the limit sleeve 16, and the second sealing strip 19 is arranged on one side, far away from the air inlet 17, of the outer wall of the limit sleeve 16.
The cross section size of first sealing strip 18 with the cross section size of second sealing strip 19 is equal, and first sealing strip 18 and second sealing strip 19 sealed effect are the same, guarantee to carry out dual seal treatment between spacing sleeve 16 and the fuse tube 1 inner wall, guarantee that helium can carry out impact to spacing sleeve 16 and carry, the cross section external diameter of first sealing strip 18 is less than the cross section internal diameter of spacing sleeve 16, can effectively reduce the burden of first sealing strip 18 and second sealing strip 19 to spacing sleeve 16, guarantee that first sealing strip 18 and second sealing strip 19 can guarantee sealing performance when moving along with spacing sleeve 16.
The length of first sealing strip 18 with the length of second sealing strip 19 equals, and first sealing strip 18 is the same with the sealed effect of second sealing strip 19, guarantees to carry out double seal between spacing sleeve 16 and the fuse tube 1 inner wall and handle, the length of first sealing strip 18 is greater than the length of spacing sleeve 16, guarantees that first sealing strip 18 and second sealing strip 19 can carry out comprehensive seal to spacing sleeve 16 and handle, avoids helium to reveal from the both ends of spacing sleeve 16, improves sealing performance.
The volume between two adjacent spacing sleeves 16 is smaller than the volume of the mounting hole 10, so that the volume of the sodium strip 21 inside the mounting hole 10 is larger than the volume between two adjacent spacing sleeves 16, the volume of the body device when the sodium strip 21 is gasified under abnormal high-temperature and high-current is introduced is larger, helium with the volume larger than that between two spacing sleeves 16 can be impacted into the second cavity 9, and the spacing sleeves 16 can be ensured to be shifted to the position of the adjacent spacing sleeve 16.
The implementation mode specifically comprises the following steps: during the use, through setting up limit sleeve 16, air inlet 17, first sealing strip 18 and second sealing strip 19, limit sleeve 16 is used for carrying out spacing shielding with the helium, the helium that carries from second through groove 13 is direct to be spouted limit sleeve 16 inboard from air inlet 17, then carry out the backspin along limit sleeve 16, the impact of circling round to limit sleeve 16, can strengthen the driving force to pushing away frame 14, guarantee the displacement that insulating sleeve 7 rotated displacement volume enough changes the fuse-element, first sealing strip 18 carries out first resealing to limit sleeve 16 and fuse tube 1 inner wall, second sealing strip 19 can carry out second resealing to limit sleeve 16 and fuse tube 1 inner wall, can effectively guarantee that the helium carries out pressure impact only to pushing away between the frame 14 that keeps the mounting hole 10 both sides of passageway, avoid the helium leakage, guarantee sufficient driving force.
The working principle of the invention is as follows:
referring to fig. 1-3 and fig. 5-7 of the specification, through setting up fuse tube 1, fuse mounting bracket 4, insulating sleeve 7, first cavity 8, mounting hole 10, first through groove 11, hemispherical groove 12, second through groove 13, pushing frame 14 and sodium strip 21, sodium strip 21 changes the plasma vapor of high temperature and high pressure state from solid at the time of fusing, the resistivity increases rapidly, thereby play strong current limiting effect to the high-voltage current, and breaking electric current in the twinkling of an eye, sodium strip 21 can produce a large amount of pressures in the plasma vapor process that becomes high temperature and high pressure state, helium gas that is carried from second through groove 13 directly strikes pushing frame 14, realize the rotary adjustment to insulating sleeve 7, utilize the direct rotary replacement fuse-element under the pressure promotion that produces at the time of fusing, can effectively guarantee the fusing effect of fuse after repairing, simultaneously sodium is gradually cooled down before leading into the inside mounting hole 10 of helium gas at the time of high temperature and high pressure state, in the device carries out self-repairing process, can realize the rotary adjustment to insulating sleeve 7, the metal sodium in annular distribution carries out the self-repairing and carries out the rotary adjustment to the vaporization condition in the metal sodium in the time of the device and carries out the vaporization condition before the metal sodium is gasified and the vaporization condition is carried out the vaporization condition in the time of the metal surface of the vaporization device, the vaporization condition is carried out at the time of vaporizing condition is carried out, the vaporization condition is carried out at the time of the metal liquefaction device is liquefied, and the vaporization condition is carried out, the vaporization condition is liquefied before the metal sodium is liquefied, the device is liquefied, and the vaporization condition is liquefied is continuously is liquefied, the quality distribution uniformity degree of the cooling solidified metal sodium can be effectively enhanced, the later fusing effect is further enhanced, the helium emits pink light when in a normal power-on state, the helium is in a colorless state when in a fusing state, and whether the fuse is fused normally or the fuse is self-repaired can be judged through the color passing through the fuse tube 1;
further, referring to fig. 2, fig. 4, fig. 5-6 and fig. 8 of the specification, by providing the limiting sleeve 16, the air inlet 17, the first sealing strip 18 and the second sealing strip 19, the helium performs a convolution impact along the limiting sleeve 16, so that the pushing force on the pushing frame 14 can be enhanced, the rotational displacement of the insulating sleeve 7 is ensured to be enough to replace the displacement of the melt, the dual sealing treatment can be performed on the limiting sleeve 16 and the inner wall of the fuse tube 1, the leakage of the helium is avoided, and the sufficient pushing force is ensured.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. High-voltage distribution fuse of heavy current fusing and self-repairing, including fuse tube (1), its characterized in that: a first mounting head (2) is arranged at one end of the outer wall of the fuse tube (1), a second mounting head (3) is arranged at the other end of the outer wall of the fuse tube (1), a movably connected fuse wire mounting frame (4) is arranged inside the fuse tube (1), a first connecting terminal (5) penetrates through the surface of the first mounting head (2), a second connecting terminal (6) penetrates through the surface of the second mounting head (3), and the first connecting terminal (5) and the second connecting terminal (6) are respectively connected with two ends of the fuse wire mounting frame (4) in a contact mode;
the fuse wire mounting frame (4) comprises an insulating sleeve (7), a first cavity (8) is arranged inside the insulating sleeve (7), a second cavity (9) is arranged between the insulating sleeve (7) and the fuse wire tube (1), a plurality of mounting holes (10) are formed in the surface of the insulating sleeve (7) between the first cavity (8) and the second cavity (9), helium is filled in the first cavity (8) and the second cavity (9), one mounting hole (10) is penetrated by the helium, sodium strips (21) are arranged in the rest of the mounting hole (10), a first through groove (11) is formed in one side, close to the first cavity (8), of the outer wall of the mounting hole (10), a hemispherical groove (12) is formed in one end, close to the second cavity (9), of the outer wall of the mounting hole (10), a second through groove (13) is formed in one side, close to the second cavity (9), of the outer wall of the mounting hole (10), a second through groove (13) is formed in the outer wall of the first through groove (11), the second through groove (13) is formed in one side, close to the second cavity (14), the second through groove (14) is formed in the inner side of the insulating sleeve (9), the mounting holes (10) and the pushing frame (14) are respectively arranged on the outer wall of the insulating sleeve (7) in an annular shape;
the length of the first through groove (11) is smaller than that of the second through groove (13), and the inner diameter of the hemispherical groove (12) is larger than that of the first through groove (11);
when in use, the fuse tube, the fuse wire mounting frame, the insulating sleeve, the first cavity, the mounting hole, the first through groove, the hemispherical groove, the second through groove, the pushing frame and the sodium strip are arranged, the first mounting head and the second mounting head are respectively mounted and supported at two ends of the fuse tube, the fuse wire mounting frame is movably mounted inside the fuse tube, the first connecting terminal and the second connecting terminal can be in contact connection with one sodium strip on the fuse wire mounting frame, the high-current fusing protection is realized, a large amount of pressure is generated in the process of changing the sodium strip into the high-temperature and high-pressure plasma steam, the plasma steam in the high-temperature and high-pressure state is discharged outwards from the mounting hole of the mounting position through the first through groove and the hemispherical groove, the plasma steam in the high-temperature and high-pressure state enters the first cavity, the molecular weight of helium is smaller than that of sodium, the helium in the first cavity can be extruded outwards by plasma vapor in a high-temperature and high-pressure state, the helium enters the inner side of a mounting hole without sodium strips from a hemispherical groove and a first through groove, then is extruded into a second cavity from the inner side of the mounting hole through a second through groove, the helium conveyed from the second through groove directly impacts on a pushing frame, the space pressure between two pushing frames positioned on two sides of the mounting hole is gradually increased, a rotary pushing force is generated between the two pushing frames, the pushing frames can be pushed to rotate along a fuse tube, and the impact force on the pushing frames close to the second through groove for conveying the helium is larger, so that the rotary direction of an insulating sleeve is referenced by the two pushing frames impacted by the helium: rotating from the pushing frame far away from the second through groove for conveying helium to the other pushing frame; the plurality of sodium strips can rotate along with the insulating sleeve to rotate when the fuse is used, the unused sodium strips can directly rotate to the position of the fused and gasified sodium strips, so that the other mounting hole provided with the sodium strips is aligned with and contacted with and is connected with the first connecting terminal and the second connecting terminal, the rotating adjustment of the insulating sleeve can be realized in the self-repairing process of the device, the annularly distributed metal sodium continuously rotates in the self-repairing process, the metal sodium is gasified and liquefied and condensed in the fusing process, the metal sodium which is fused and gasified at the rear is continuously subjected to the supplementing treatment for the metal sodium which is fused and gasified and liquefied and condensed at the front, when the metal sodium which is gasified and condensed at the first time in the device is rotated to the original circuit connecting position, the metal sodium in the device is completely subjected to the gasifying and liquefying and condensing process, the metallic sodium that condenses again all carries out the supplemental treatment many times before using, can effectively carry out repair treatment to metallic sodium inside hole or unsmooth different situation in surface, can effectively strengthen the quality distribution uniformity degree of cooling solidification metallic sodium, further strengthen later stage fusing effect, helium is in normal circular telegram state simultaneously, helium and normal circular telegram sodium strip contact and fuse tube cooperation, make the sodium strip be in the discharge tube, helium fills the space of fuse mounting bracket, guarantee that metallic sodium gasification volume is expanded afterwards the accessible helium realizes the rotation promotion to the fuse mounting bracket, guarantee power, helium can send pink brilliant in normal circular telegram state, be colorless state when helium is in the fusing state, the colour that the accessible passed the fuse tube judges whether the fuse is normally fused or has carried out the state of self-repairing.
2. A high-current fusing and self-repairing high-voltage distribution fuse as in claim 1 wherein: the two ends of the mounting hole (10) are symmetrically provided with connectors (20), and the sodium strip (21) is arranged between the two connectors (20).
3. A high-current fusing and self-repairing high-voltage distribution fuse as in claim 2 wherein: the second through groove (13) is of an arc-shaped structure, and an opening of the second through groove (13) faces to the pushing frame (14) close to one side of the mounting hole (10).
4. A high-current fusing and self-repairing high-voltage distribution fuse as in claim 3 wherein: an arc extinguishing sleeve (15) is arranged on the inner wall of the insulating sleeve (7) in the inner wall of the mounting hole (10).
5. A high-current fusing and self-repairing high-voltage distribution fuse in accordance with claim 4 wherein: the pushing frame (14) comprises a limit sleeve (16), an air inlet (17) is formed in one side, close to the second through groove (13), of the outer wall of the limit sleeve (16), a first sealing strip (18) and a second sealing strip (19) are arranged on one side, far away from the first cavity (8), of the outer wall of the limit sleeve (16), the first sealing strip (18) is arranged on one side, close to the air inlet (17), of the outer wall of the limit sleeve (16), and the second sealing strip (19) is arranged on one side, far away from the air inlet (17), of the outer wall of the limit sleeve (16).
6. A high-current fusing and self-repairing high-voltage distribution fuse in accordance with claim 5 wherein: the cross sections of the first sealing strip (18) and the second sealing strip (19) are equal in size, and the outer diameter of the cross section of the first sealing strip (18) is smaller than the inner diameter of the cross section of the limiting sleeve (16).
7. A high-current fusing and self-repairing high-voltage distribution fuse in accordance with claim 6 wherein: the lengths of the first sealing strip (18) and the second sealing strip (19) are equal, and the length of the first sealing strip (18) is greater than that of the limit sleeve (16).
8. A high-current fusing and self-repairing high-voltage distribution fuse in accordance with claim 7 wherein: the volume between two adjacent limit sleeves (16) is smaller than the volume of the mounting hole (10).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011217022.5A CN112420464B (en) | 2020-11-04 | 2020-11-04 | High-voltage distribution fuse with high-current fusing and self-repairing functions |
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| CN202011217022.5A CN112420464B (en) | 2020-11-04 | 2020-11-04 | High-voltage distribution fuse with high-current fusing and self-repairing functions |
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| CN112420464A CN112420464A (en) | 2021-02-26 |
| CN112420464B true CN112420464B (en) | 2023-12-05 |
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| CN110021509A (en) * | 2019-05-22 | 2019-07-16 | 蒋瑾 | A kind of recoverable fuse |
| CN110021508A (en) * | 2019-05-19 | 2019-07-16 | 张家霞 | It is a kind of to rotate from for formula circuit fuse protection equipment |
| CN110752129A (en) * | 2018-12-11 | 2020-02-04 | 张然 | Fuse capable of automatically recovering and fuse automatic recovery method |
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Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB455670A (en) * | 1934-09-18 | 1936-10-26 | Westinghouse Electric & Mfg Co | Improvements in or relating to electric fuses |
| US5861793A (en) * | 1996-04-29 | 1999-01-19 | Hatton; Ken W. | Re-settable fuse |
| JP2000173439A (en) * | 1998-12-10 | 2000-06-23 | Nippon Kouatsu Electric Co | Expulsion fuse for extra high tension and high tension |
| JP2002133998A (en) * | 2000-10-23 | 2002-05-10 | Taiheiyo Seiko Kk | Fuse device |
| CN204204781U (en) * | 2014-11-26 | 2015-03-11 | 国家电网公司 | A kind of renewable type fuse |
| CN107086165A (en) * | 2017-06-26 | 2017-08-22 | 马人欢 | Rotary multichannel fuse |
| CN110752129A (en) * | 2018-12-11 | 2020-02-04 | 张然 | Fuse capable of automatically recovering and fuse automatic recovery method |
| CN110021508A (en) * | 2019-05-19 | 2019-07-16 | 张家霞 | It is a kind of to rotate from for formula circuit fuse protection equipment |
| CN110021509A (en) * | 2019-05-22 | 2019-07-16 | 蒋瑾 | A kind of recoverable fuse |
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| Publication number | Publication date |
|---|---|
| CN112420464A (en) | 2021-02-26 |
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