A fuse for transformer protection that is easy to replace and a method thereof

Abstract

The present invention discloses a fuse for transformer protection that is convenient for fuse replacement and a method thereof, belonging to the technical field of fuses, comprising a post insulator and a fuse tube, wherein the post insulator is provided with a trigger-type warning mechanism; the trigger-type warning mechanism comprises a buffer limit assembly, a light warning assembly and a reflective warning assembly, wherein the buffer limit assembly is mounted at the lower end of the post insulator, the light warning assembly is mounted on the buffer limit assembly, and the reflective warning assembly is mounted on the top of the post insulator. In the above manner, when the fuse blows, the fuse tube flips and falls, and the buffer limit assembly limits the fuse tube to prevent the fuse tube from swinging back and forth after falling and contacting the surrounding lines to cause conduction; when the fuse tube falls, the light warning assembly and the reflective warning assembly are triggered to operate, the light warning assembly emits a warning light to guide maintenance personnel at night; the reflective warning assembly continuously reflects sunlight to form a flashing effect to guide maintenance personnel during the day.

Description

Technical Field

[0001] The present invention relates to the technical field of fuses, and in particular to a fuse for transformer protection that is convenient for fuse replacement and a method thereof. Background Art

[0002] A drop-out fuse is a protective device used in power systems, primarily to protect transformer and distribution equipment and lines from overloads and short-circuits. Its operating principle is to rapidly melt the fuse in the event of an overload or short-circuit, thereby interrupting the current.

[0003] Chinese patent CN215496612U discloses a drop-out fuse, which includes an insulator and a fuse tube. Two guide pieces are provided at the upper end of the insulator. The two guide pieces extend in a V shape toward the fuse tube. The fuse tube is clamped between the two guide pieces. The guide pieces are provided with an arc groove adapted to the fuse tube. The fuse tube is prevented from swinging in the wind by providing an arc groove adapted to the fuse tube on the guide piece. However, when the fuse blows, maintenance personnel can only know the approximate area where the power system has blown. The fuse installed outdoors may be blocked by obstructions, making it difficult for maintenance personnel to locate the position of the blown fuse, thereby making it inconvenient to replace the fuse of the fuse, thereby reducing the speed of power system recovery.

[0004] Based on this, the present invention designs a transformer protection fuse that is easy to replace the fuse and a method thereof to solve the above problems. Summary of the Invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a fuse for transformer protection and a method thereof that facilitates fuse replacement.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] A transformer protection fuse with easy fuse replacement, comprising a support insulator and a fuse tube;

[0008] The upper and lower ends of the post insulator are respectively fixedly mounted with an upper bracket and a lower bracket via quick-release connection assemblies;

[0009] An upper terminal for connecting to an incoming line is fixedly mounted on the upper bracket, and a lower terminal for connecting to an outgoing line is fixedly mounted on the lower bracket;

[0010] The upper and lower ends of the fuse tube are respectively provided with an upper contact and a lower contact; an elastic pressing piece is fixedly installed at the lower end of the upper terminal, and the upper contact is slidably engaged with the elastic pressing piece; a limiting groove is provided at the right end of the upper bracket, which is limitedly slidably connected to the elastic pressing piece;

[0011] The left end of the lower contact is fixedly mounted with a connecting shaft, and the right end of the lower terminal is provided with a connecting groove that is slidably connected to the connecting shaft;

[0012] The middle part of the post insulator is provided with an adjustable fixing mechanism for adjusting the direction of the fuse when installing it to facilitate wiring operations;

[0013] The support insulator is provided with a trigger-type warning mechanism for issuing a warning to the surrounding area when the fuse blows and the fuse tube falls, so as to remind the maintenance personnel to locate the position of the blown fuse as soon as possible;

[0014] The trigger-type warning mechanism includes a buffer limit component, a light warning component and a reflective warning component. The buffer limit component is installed at the lower end of the support insulator to limit the fallen fuse tube to prevent the fallen fuse tube from swinging and contacting other lines to cause conductivity; the buffer limit component is installed with a light warning component for controlling the alarm light to flash after the fuse tube falls so as to locate the fuse position at night; the top of the support insulator is installed with a reflective warning component for continuously reflecting sunlight after the fuse tube falls so as to locate the fuse position during the day.

[0015] Furthermore, the buffer limit assembly includes a fixed column, a support sleeve, an inner slide rod, a buffer spring and a semi-annular block. The fixed column is fixedly installed at the lower end of the support insulator, and the right end of the fixed column is fixedly installed with a support sleeve provided with a cavity, and the inner slide rod is slidingly connected to the cavity of the support sleeve; the buffer spring is arranged in the cavity of the support sleeve, and the two ends of the buffer spring are respectively fixedly connected to the support sleeve and the inner slide rod; the right end of the inner slide rod is fixedly installed with a semi-annular block for clamping with the fuse tube.

[0016] Furthermore, a guide piece is provided at the opening at the right end of the semi-circular block. When the fuse tube falls, the fuse tube will rotate toward the semi-circular block and slide into the interior of the semi-circular block along the guide piece to be fixed with the semi-circular block.

[0017] Furthermore, the light warning assembly includes a through hole, a movable groove, a conductor, a support spring, a warning light, a power supply, a first elastic conductive sheet and a second elastic conductive sheet. The upper end of the support sleeve is provided with a through hole for the movement of the conductor, and the middle part of the inner slide rod is provided with a movable groove that is slidably connected to the conductor; a support spring is provided in the movable groove, and the two ends of the support spring are respectively fixedly connected to the conductor and the bottom of the movable groove; the warning light and the power supply are fixedly installed on the upper end of the support sleeve and distributed on the left and right sides of the through hole; the first elastic conductive sheet and the second elastic conductive sheet are respectively fixedly installed on the end of the warning light and the power supply close to the through hole.

[0018] Furthermore, the distance between the first elastic conductive sheet and the second elastic conductive sheet is smaller than the thickness of the conductor. When the conductor extends out of the movable slot, the first elastic conductive sheet and the second elastic conductive sheet are in close contact with the conductor.

[0019] Furthermore, the reflective warning component includes a bracket, a rotating shaft, a cross bar, a wind hood and a card limit component. The bracket is fixedly installed on the top of the upper bracket. A plurality of cross bars are evenly fixedly installed in a circular array on the upper end of the rotating shaft at equal intervals. The outer end of the cross bar is fixedly installed with a wind hood; the surface of the wind hood is provided with a mirror reflective layer; the rotating shaft is rotatably connected to the bracket through a bearing, and the lower end of the rotating shaft is provided with a card limit component connected to the elastic pressing plate.

[0020] Furthermore, the card-limiting assembly includes an annular block, a card slot, a card bolt and a connecting piece. The lower end of the rotating shaft passes through the bracket and is fixedly installed with an annular block; a card slot for engaging with the card bolt is opened on the annular block, and the card bolt is fixedly installed on the upper end of the elastic pressure plate through the connecting piece.

[0021] Furthermore, the adjustable fixing mechanism includes a fixed arm, a connecting plate, a sliding column, a sliding sleeve, an upper tooth block and a lower tooth block. The connecting plate is fixedly installed in the middle of the post insulator, the sliding column is fixedly installed on the left end of the connecting plate, and the outer side of the sliding column is provided with a sliding sleeve; the upper tooth block is fixedly installed on the top of the sliding column; the lower tooth block is fixedly installed on the top of the sliding sleeve, the lower tooth block is located on the lower side of the upper tooth block, and the upper tooth block and the lower tooth block are clamped; the left side of the sliding sleeve is fixedly installed with a fixed arm for fixing in the installation position, and the fixed arm is tilted so that the fuse tube is tilted fifteen to thirty degrees after installation is completed.

[0022] Furthermore, the quick-release connection assembly includes a clamp, a connector, a fixing bolt and a fixing nut. The left ends of the upper bracket and the lower bracket are fixedly installed with clamps for tightly fixing with the end clamps of the support insulators, and the two ends of the clamp opening are respectively fixedly installed with connectors; the fixing bolt passes through the two connectors, and the tail of the fixing bolt is threadedly connected to the fixing nut. By turning the fixing nut to adjust the distance between the two connectors, the tightening of the clamp is controlled so that the clamp is tightly fixed to the support insulator.

[0023] In order to better achieve the purpose of the present invention, the present invention also provides a method for using a transformer protection fuse that facilitates fuse replacement, comprising the following steps:

[0024] Step 1: When the fuse is blown, the fuse tube falls downward, rotates toward the semi-annular clamping block, and slides along the guide piece into the interior of the semi-annular clamping block and is clamped and fixed with the semi-annular clamping block;

[0025] Step 2: The impact force caused by the falling fuse tube pushes the inner slide rod into the support sleeve. When the conductor in the movable slot is aligned with the through hole, the support spring pushes the conductor out of the movable slot, allowing the conductor to pass through the through hole and push open the first elastic conductive sheet and the second elastic conductive sheet on both sides.

[0026] Step 3: The first elastic conductive sheet and the second elastic conductive sheet are tightly contacted with the conductor, so that the power supply and the warning light are connected, thereby causing the warning light to flash, guiding maintenance personnel to find the fuse at night;

[0027] Step 4: As the fuse tube falls, the elastic pressing piece no longer engages with the upper contact of the fuse tube, and the elastic pressing piece moves downward under its own elastic action;

[0028] Step 5: The elastic pressing piece controls the movement of the latch through the connecting piece, so that the latch is disengaged from the latch groove of the annular block, thereby releasing the limiting effect on the rotating shaft and allowing the rotating shaft to rotate freely;

[0029] Step 6: The hood rotates around the axis of rotation under the action of natural wind. The mirror reflective layer on the surface of the hood will continuously reflect sunlight, causing the blown fuse to flash continuously, guiding maintenance personnel to find the fuse during the day.

[0030] Compared with the prior art, the present invention has the following beneficial effects:

[0031] 1. When the fuse blows, the fuse tube flips and falls through the connecting groove and connecting shaft until the fuse tube contacts the buffer limit assembly. The buffer limit assembly limits the fuse tube to prevent the fuse tube from swinging back and forth after falling and contacting the surrounding circuits, causing adverse effects such as conduction;

[0032] 2. When the fuse tube falls, the light warning component and the reflective warning component will be triggered to operate. The light warning component will emit a warning light to assist maintenance personnel in locating the position of the blown fuse at night; the reflective warning component will continuously reflect sunlight to form a flashing effect, assisting maintenance personnel in locating the position of the blown fuse during the day; the cooperation of the light warning component and the reflective warning component can meet the guidance and positioning needs of maintenance personnel in different scenarios, so that maintenance personnel can quickly find the fuse tube where the fuse is blown, effectively facilitating the replacement of the fuse. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0034] Figure 1 The present invention is a three-dimensional fuse for transformer protection that is easy to replace the fuse Figure 1 ;

[0035] Figure 2 This is a front view of a transformer protection fuse that is easy to replace according to the present invention;

[0036] Figure 3 The present invention is a three-dimensional fuse for transformer protection that is easy to replace the fuse Figure 2 ;

[0037] Figure 4 for Figure 2 Enlarged view of point A in the middle;

[0038] Figure 5 for Figure 3 Enlarged view of point B in the middle;

[0039] Figure 6 It is a partial three-dimensional diagram of the buffer limit assembly of the present invention;

[0040] Figure 7 for Figure 6 Forward half section view of

[0041] Figure 8 It is a partial three-dimensional view of the reflective warning component of the present invention.

[0042] The numbers in the figure represent:

[0043] 1. Post insulator; 11. Upper bracket; 12. Lower bracket; 13. Upper terminal; 14. Lower terminal; 2. Fuse tube; 21. Upper contact; 22. Lower contact; 23. Connecting slot; 24. Connecting shaft; 25. Elastic pressure piece; 26. Limiting slot; 3. Quick-release connection assembly; 31. Clamp; 32. Connector; 33. Fixing bolt; 34. Fixing nut; 4. Adjustable fixing mechanism; 41. Fixing arm; 42. Connecting plate; 43. Sliding column; 44. Sliding sleeve; 45. Upper tooth block; 46. Lower tooth block; 5. Trigger-type warning mechanism; 51. Buffer limit assembly ; 511. Fixed column; 512. Support sleeve; 513. Inner slide rod; 514. Buffer spring; 515. Semi-annular block; 52. Light warning assembly; 521. Through hole; 522. Movable slot; 523. Conductor; 524. Support spring; 525. Warning light; 526. Power supply; 527. First elastic conductive sheet; 528. Second elastic conductive sheet; 53. Reflective warning assembly; 531. Bracket; 532. Rotating shaft; 533. Cross bar; 534. Hood; 535. Ring block; 536. Slot; 537. Bolt; 538. Connecting piece. DETAILED DESCRIPTION

[0044] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0045] The terms “left,” “right,” “front,” “back,” “up,” and “down” mentioned in the following description are oriented in the viewing direction of the front view.

[0046] Example 1:

[0047] In some embodiments, please refer to the accompanying drawings of the specification. Figures 1-8 , a fuse for transformer protection that is easy to replace the fuse, comprising a post insulator 1 and a fuse tube 2;

[0048] The upper and lower ends of the post insulator 1 are respectively fixedly mounted with an upper bracket 11 and a lower bracket 12 via a quick-release connection assembly 3;

[0049] An upper terminal 13 for connecting to an incoming line is fixedly mounted on the upper bracket 11, and a lower terminal 14 for connecting to an outgoing line is fixedly mounted on the lower bracket 12;

[0050] The upper and lower ends of the fuse tube 2 are respectively provided with an upper contact 21 and a lower contact 22; an elastic pressing piece 25 is fixedly mounted on the lower end of the upper terminal 13, and the upper contact 21 is slidably engaged with the elastic pressing piece 25; a limiting groove 26 is formed at the right end of the upper bracket 11, which is slidably connected to the elastic pressing piece 25;

[0051] A connecting shaft 24 is fixedly mounted on the left end of the lower contact 22, and a connecting groove 23 is provided on the right end of the lower terminal 14 for sliding connection with the connecting shaft 24;

[0052] The middle part of the post insulator 1 is provided with an adjustable fixing mechanism 4 for adjusting the direction of the fuse when installing the fuse to facilitate the wiring operation;

[0053] The post insulator 1 is provided with a trigger-type warning mechanism 5 for issuing a warning to the surroundings when the fuse blows and the fuse tube 2 falls, so as to remind maintenance personnel to locate the position of the blown fuse as soon as possible;

[0054] The trigger-type warning mechanism 5 includes a buffer limit assembly 51, a light warning assembly 52, and a reflective warning assembly 53. The buffer limit assembly 51 is mounted at the lower end of the post insulator 1 and is used to limit the position of the fallen fuse tube 2 to prevent the fallen fuse tube 2 from swinging and contacting other lines, causing conduction. The buffer limit assembly 51 is mounted with the light warning assembly 52, which is used to control the flashing of the alarm light after the fuse tube 2 falls, thereby locating the fuse position at night. The reflective warning assembly 53 is mounted on the top of the post insulator 1, which is used to continuously reflect sunlight after the fuse tube 2 falls, thereby locating the fuse position during the day.

[0055] In the present invention, the post insulator 1 and the fuse body are of separate modular design. The post insulator 1 and the fuse body can be quickly disassembled and assembled through the quick-detachable connection assembly 3, so as to facilitate maintenance operations on the fuse.

[0056] When the post insulator 1 is deployed at the installation position through the adjustable fixing mechanism 4, the angle of the post insulator 1 can be arbitrarily changed through the adjustable fixing mechanism 4, thereby changing the angles of the upper terminal 13 and the lower terminal 14 to facilitate the wiring work of the construction workers;

[0057] When the fuse is working normally, the lower contact 22 of the fuse tube 2 is connected to the lower terminal 14 through the connecting groove 23 and the connecting shaft 24, and the upper contact 21 of the fuse tube 2 is clamped with the elastic pressing piece 25 to connect with the upper terminal 13, so that the current flowing from the incoming line passes through the fuse in the fuse tube 2 and then flows out from the outgoing line; when the fuse is blown, the fuse tube 2 flips and falls through the connecting groove 23 and the connecting shaft 24 until the fuse tube 2 contacts the buffer limit assembly 51. The buffer limit assembly 51 limits the fuse tube 2 to prevent the fuse tube 2 from swinging back and forth after falling and contacting the surrounding lines, causing adverse effects such as conduction. When the fuse tube 2 falls, the light warning component 52 and the reflective warning component 53 will be triggered to operate. The light warning component 52 will emit a warning light to assist maintenance personnel in locating the position of the blown fuse at night; the reflective warning component 53 will continuously reflect sunlight to form a flashing effect, to assist maintenance personnel in locating the position of the blown fuse during the day; the cooperation of the light warning component 52 and the reflective warning component 53 can meet the guidance and positioning needs of maintenance personnel in different scenarios, so that maintenance personnel can quickly find the fuse tube 2 where the fuse is blown, which effectively facilitates the replacement of the fuse.

[0058] The buffer limit assembly 51 includes a fixed column 511, a support sleeve 512, an inner slide rod 513, a buffer spring 514 and a semi-annular block 515. The fixed column 511 is fixedly installed at the lower end of the post insulator 1. The right end of the fixed column 511 is fixedly installed with a support sleeve 512 with a cavity. The inner slide rod 513 is in limited sliding connection with the cavity of the support sleeve 512. The buffer spring 514 is arranged in the cavity of the support sleeve 512, and the two ends of the buffer spring 514 are respectively fixedly connected to the support sleeve 512 and the inner slide rod 513. The right end of the inner slide rod 513 is fixedly installed with a semi-annular block 515 for clamping with the fuse tube 2.

[0059] A guide piece is provided at the opening at the right end of the semi-annular block 515, so that when the fuse tube 2 falls, the fuse tube 2 will rotate in the direction of the semi-annular block 515, slide into the interior of the semi-annular block 515 along the guide piece, and be fixed with the semi-annular block 515, pushing the inner slide rod 513 toward the inner side of the support sleeve 512. The impact force of the fuse tube 2 is buffered by the buffer spring 514, thereby reducing the swing amplitude and number of swings of the fuse tube 2, thereby achieving a limiting effect on the fuse tube 2.

[0060] The light warning assembly 52 includes a through hole 521, a movable groove 522, a conductor 523, a support spring 524, a warning light 525, a power supply 526, a first elastic conductive sheet 527 and a second elastic conductive sheet 528. The upper end of the support sleeve 512 is provided with a through hole 521 for the movement of the conductor 523, and the middle part of the inner slide rod 513 is provided with a movable groove 522 that is slidably connected to the conductor 523; a support spring 524 is provided in the movable groove 522, and the two ends of the support spring 524 are fixedly connected to the conductor 523 and the bottom of the movable groove 522 respectively. ; The warning light 525 and the power supply 526 are fixedly installed on the upper end of the support sleeve 512 and distributed on the left and right sides of the through hole 521; the warning light 525 and the power supply 526 are fixedly installed with a first elastic conductive sheet 527 and a second elastic conductive sheet 528 at one end close to the through hole 521, and the spacing between the first elastic conductive sheet 527 and the second elastic conductive sheet 528 is smaller than the thickness of the conductor 523, so that when the conductor 523 extends from the movable groove 522, the first elastic conductive sheet 527 and the second elastic conductive sheet 528 can be in close contact with the conductor 523.

[0061] The reflective warning component 53 includes a bracket 531, a rotating shaft 532, a cross bar 533, a hood 534, an annular block 535, a slot 536, a bolt 537 and a connecting piece 538. The bracket 531 is fixedly installed on the top of the upper bracket 11. The upper end of the rotating shaft 532 is fixedly installed with multiple cross bars 533 at equal intervals in a circular array, and the outer end of the cross bar 533 is fixedly installed with a hood 534; the surface of the hood 534 is provided with a mirror reflective layer; the lower end of the rotating shaft 532 is rotatably connected to the bracket 531 through a bearing, and the lower end of the rotating shaft 532 passes through the bracket 531 and is fixedly installed with an annular block 535; the annular block 535 is provided with a slot 536 that is engaged with the bolt 537, and the bolt 537 is fixedly installed on the upper end of the elastic pressing piece 25 through the connecting piece 538.

[0062] In the present invention, when the fuse is blown, the fuse tube 2 falls downward, rotates toward the semi-annular block 515 and is fixedly engaged with the semi-annular block 515, and the fuse tube 2 pushes the inner slide bar 513 toward the support sleeve 512. When the conductor 523 in the movable groove 522 is aligned with the through hole 521, the support spring 524 pushes the conductor 523 out of the movable groove 522, so that the conductor 523 passes through the through hole 521 and pushes away the first elastic conductive sheet 527 and the second elastic conductive sheet 528 on both sides. At this time, the first elastic conductive sheet 527 and the second elastic conductive sheet 528 are tightly abutted against the conductor 523, thereby making the power supply 526 and the warning light 525 conductive, causing the warning light 525 to flash when it is powered on, thereby guiding maintenance personnel to find the fuse at night.

[0063] When the fuse tube 2 falls, the elastic pressing piece 25 is no longer engaged with the upper contact 21 of the fuse tube 2. The elastic pressing piece 25 moves downward under its own elastic action, so that the elastic pressing piece 25 controls the movement of the latch 537 through the connecting piece 538, so that the latch 537 is disengaged from the latch groove 536 of the annular block 535, and the limiting effect on the rotating shaft 532 is released. The rotating shaft 532 can rotate freely. Under the action of natural wind, the wind cap 534 rotates, and the mirror reflective layer on the surface of the wind cap 534 will continuously reflect sunlight, causing the blown fuse to flash continuously, thereby facilitating the maintenance personnel to find and locate it.

[0064] Example 2:

[0065] In some embodiments, as Figure 2-Figure 5As shown, the adjustable fixing mechanism 4 includes a fixed arm 41, a connecting plate 42, a sliding post 43, a sliding sleeve 44, an upper tooth block 45 and a lower tooth block 46. The connecting plate 42 is fixedly installed in the middle of the post insulator 1, the sliding post 43 is fixedly installed on the left end of the connecting plate 42, and the outer side of the sliding post 43 is sleeved with a sliding sleeve 44; the upper tooth block 45 is fixedly installed on the top of the sliding post 43; the lower tooth block 46 is fixedly installed on the top of the sliding sleeve 44, and the lower tooth block 46 is located on the lower side of the upper tooth block 45, and the upper tooth block 45 and the lower tooth block 46 are clamped together; the left side of the sliding sleeve 44 is fixedly installed with a fixed arm 41 for fixing it in the installation position, and the fixed arm 41 is tilted so that the fuse tube 2 is tilted fifteen to thirty degrees after installation, so that the fuse tube 2 can fall freely when melting occurs;

[0066] In the present invention, after the fixed arm 41 is fixed to the mounting position, the upper tooth block 45 is pressed down on the lower tooth block 46 under the action of gravity so that the upper tooth block 45 and the lower tooth block 46 are engaged with each other, thereby fixing the angle of the post insulator 1; when the construction workers lift the post insulator 1, the post insulator 1 drives the upper tooth block 45 to move up and disengage from the lower tooth block 46 through the connecting plate 42 and the sliding column 43. At this time, the angle of the post insulator 1 can be freely adjusted so that the upper terminal 13 and the lower terminal 14 meet the wiring requirements of the construction workers, and when the construction workers release the post insulator 1, the upper tooth block 45 and the lower tooth block 46 are re-engaged to restore the fixing effect on the angle of the post insulator 1.

[0067] The quick-release connection assembly 3 includes a clamp 31, a connector 32, a fixing bolt 33 and a fixing nut 34. The left ends of the upper bracket 11 and the lower bracket 12 are fixedly installed with a clamp 31 for tightly fixing with the end clamp of the post insulator 1, and the two ends of the opening of the clamp 31 are respectively fixedly installed with a connector 32; the fixing bolt 33 passes through the two connectors 32, and the tail of the fixing bolt 33 is threadedly connected to the fixing nut 34. By rotating the fixing nut 34 to control the distance between the two connectors 32, the tightening of the clamp 31 can be controlled, so that the clamp 31 is tightly fixed to the post insulator 1, thereby realizing a separate modular design of the post insulator 1 and the fuse body, which is convenient for the inspection and maintenance of the fuse.

[0068] Example 3:

[0069] In some embodiments, as Figures 1-8 As shown, as a preferred embodiment of the present invention, a method for using a transformer protection fuse that facilitates fuse replacement includes the following steps:

[0070] Step 1: When the fuse is blown, the fuse tube 2 falls downward, rotates toward the semi-annular block 515, and slides along the guide piece into the interior of the semi-annular block 515 to be fixed with the semi-annular block 515;

[0071] Step 2: The impact force caused by the falling fuse tube 2 pushes the inner slide bar 513 into the support sleeve 512. When the conductor 523 in the movable slot 522 is aligned with the through hole 521, the support spring 524 pushes the conductor 523 out of the movable slot 522, allowing the conductor 523 to pass through the through hole 521 and push away the first elastic conductive sheet 527 and the second elastic conductive sheet 528 on both sides.

[0072] Step 3: The first elastic conductive sheet 527 and the second elastic conductive sheet 528 are tightly contacted with the conductor 523, thereby conducting electricity between the power supply 526 and the warning light 525. This causes the warning light 525 to flash, guiding maintenance personnel to find the fuse at night.

[0073] Step 4: When the fuse tube 2 falls, the elastic pressing piece 25 is no longer engaged with the upper contact 21 of the fuse tube 2, and the elastic pressing piece 25 moves downward under its own elastic action;

[0074] Step 5: The elastic pressing piece 25 controls the movement of the latch 537 through the connecting piece 538, so that the latch 537 is disengaged from the latch groove 536 of the annular block 535, thereby releasing the limiting effect on the rotating shaft 532, and the rotating shaft 532 can rotate freely;

[0075] Step 6: The wind cap 534 is driven to rotate around the rotation axis 532 under the action of natural wind. The mirror reflective layer on the surface of the wind cap 534 will continuously reflect sunlight, causing the blown fuse to continuously flash, guiding maintenance personnel to find the fuse during the day.

[0076] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A transformer protection fuse that is easy to replace, characterized by: It comprises a support insulator (1) and a fuse tube (2), An upper bracket (11) and a lower bracket (12) are fixedly mounted on the upper and lower ends of the post insulator (1) respectively via quick-release connection components (3); An upper terminal (13) for connecting to an incoming line is fixedly mounted on the upper bracket (11), and a lower terminal (14) for connecting to an outgoing line is fixedly mounted on the lower bracket (12); The upper and lower ends of the fuse tube (2) are respectively provided with an upper contact (21) and a lower contact (22); an elastic pressing piece (25) is fixedly mounted on the lower end of the upper terminal (13), and the upper contact (21) is slidably engaged with the elastic pressing piece (25); a limiting groove (26) is provided at the right end of the upper bracket (11) and is slidably engaged with the elastic pressing piece (25); A connecting shaft (24) is fixedly mounted on the left end of the lower contact (22), and a connecting groove (23) is provided on the right end of the lower terminal (14) for sliding connection with the connecting shaft (24); An adjustable fixing mechanism (4) is provided in the middle of the post insulator (1) for adjusting the direction of the fuse when installing the fuse to facilitate wiring operations; The support insulator (1) is provided with a trigger-type warning mechanism (5) for issuing a warning to the surroundings when the fuse is blown and the fuse tube (2) falls, so as to remind maintenance personnel to locate the position of the blown fuse as soon as possible; The trigger-type warning mechanism (5) comprises a buffer limit assembly (51), a light warning assembly (52) and a reflective warning assembly (53). The buffer limit assembly (51) is mounted on the lower end of the support insulator (1) and is used to limit the position of the fallen fuse tube (2) to prevent the fallen fuse tube (2) from swinging and contacting other lines, thereby causing a conductive phenomenon. The buffer limit assembly (51) is mounted with a light warning assembly (52) for controlling the flashing of an alarm light after the fuse tube (2) falls, thereby locating the fuse position at night. The top of the support insulator (1) is mounted with a reflective warning assembly (53) for continuously reflecting sunlight after the fuse tube (2) falls, thereby locating the fuse position during the day.

2. The transformer protection fuse for easy fuse replacement according to claim 1, characterized in that: The buffer limit assembly (51) comprises a fixed column (511), a support sleeve (512), an inner slide rod (513), a buffer spring (514) and a semi-annular block (515); the fixed column (511) is fixedly mounted on the lower end of the post insulator (1); a support sleeve (512) provided with a cavity is fixedly mounted on the right end of the fixed column (511); the inner slide rod (513) is in position-limiting sliding connection with the cavity of the support sleeve (512); the buffer spring (514) is arranged in the cavity of the support sleeve (512), and the two ends of the buffer spring (514) are respectively fixedly connected to the support sleeve (512) and the inner slide rod (513); and the right end of the inner slide rod (513) is fixedly mounted with a semi-annular block (515) for clamping with the fuse tube (2).

3. The transformer protection fuse for easy fuse replacement according to claim 2, characterized in that: A guide piece is provided at the opening at the right end of the semi-annular clamping block (515); when the fuse tube (2) falls, the fuse tube (2) rotates in the direction of the semi-annular clamping block (515), slides along the guide piece into the interior of the semi-annular clamping block (515), and is clamped and fixed with the semi-annular clamping block (515).

4. The transformer protection fuse for easy fuse replacement according to claim 3, characterized in that: The light warning assembly (52) comprises a through hole (521), a movable groove (522), a conductor (523), a support spring (524), a warning light (525), a power supply (526), ​​a first elastic conductive sheet (527) and a second elastic conductive sheet (528); the upper end of the support sleeve (512) is provided with a through hole (521) for the conductor (523) to move; the middle part of the inner slide rod (513) is provided with a movable groove (522) slidably connected to the conductor (523); the movable groove (524) A support spring (524) is provided in the support sleeve (522), and the two ends of the support spring (524) are fixedly connected to the conductor (523) and the bottom of the movable groove (522) respectively; the warning light (525) and the power supply (526) are fixedly installed on the upper end of the support sleeve (512) and distributed on the left and right sides of the through hole (521); the warning light (525) and the power supply (526) are fixedly installed on the end close to the through hole (521) with a first elastic conductive sheet (527) and a second elastic conductive sheet (528).

5. The transformer protection fuse for easy fuse replacement according to claim 4, characterized in that: The distance between the first elastic conductive sheet (527) and the second elastic conductive sheet (528) is smaller than the thickness of the conductor (523). When the conductor (523) extends from the movable slot (522), the first elastic conductive sheet (527) and the second elastic conductive sheet (528) are in close contact with the conductor (523).

6. The transformer protection fuse for easy fuse replacement according to claim 5, characterized in that: The reflective warning assembly (53) comprises a bracket (531), a rotating shaft (532), a cross bar (533), a hood (534) and a clamping limit assembly. The bracket (531) is fixedly mounted on the top of the upper bracket (11). A plurality of cross bars (533) are fixedly mounted at equal intervals in a circular array on the upper end of the rotating shaft (532). The hood (534) is fixedly mounted on the outer end of the cross bar (533). A mirror reflective layer is provided on the surface of the hood (534). The rotating shaft (532) is rotatably connected to the bracket (531) via a bearing, and a clamping limit assembly connected to the elastic pressing piece (25) is provided at the lower end of the rotating shaft (532).

7. The transformer protection fuse for easy fuse replacement according to claim 6, characterized in that: The clamping and limiting assembly comprises an annular block (535), a clamping slot (536), a clamping bolt (537) and a connecting piece (538); the lower end of the rotating shaft (532) passes through the bracket (531) and is fixedly mounted with the annular block (535); a clamping slot (536) for clamping with the clamping bolt (537) is provided on the annular block (535); the clamping bolt (537) is fixedly mounted on the upper end of the elastic pressing piece (25) via the connecting piece (538).

8. The transformer protection fuse for easy fuse replacement according to claim 7, characterized in that: The adjustable fixing mechanism (4) comprises a fixed arm (41), a connecting plate (42), a sliding column (43), a sliding sleeve (44), an upper tooth block (45) and a lower tooth block (46); the connecting plate (42) is fixedly installed in the middle of the pillar insulator (1); the sliding column (43) is fixedly installed on the left end of the connecting plate (42); the sliding sleeve (44) is sleeved on the outer side of the sliding column (43); the upper tooth block (45) is fixedly installed on the top of the sliding column (43); the lower tooth block (46) is fixedly installed on the top of the sliding sleeve (44); the lower tooth block (46) is located on the lower side of the upper tooth block (45), and the upper tooth block (45) and the lower tooth block (46) are clamped; the left side of the sliding sleeve (44) is fixedly installed with a fixed arm (41) for fixing at the installation position, and the fixed arm (41) is tilted so that the fuse tube (2) is tilted by fifteen to thirty degrees after installation.

9. The transformer protection fuse for easy fuse replacement according to claim 8, characterized in that: The quick-release connection assembly (3) comprises a clamp (31), a connector (32), a fixing bolt (33) and a fixing nut (34); the left ends of the upper bracket (11) and the lower bracket (12) are both fixedly mounted with a clamp (31) for tightly fixing with the end clamp of the post insulator (1); the two ends of the opening of the clamp (31) are respectively fixedly mounted with connectors (32); the fixing bolt (33) passes through the two connectors (32), and the tail of the fixing bolt (33) is threadedly connected to the fixing nut (34); the spacing between the two connectors (32) is adjusted by rotating the fixing nut (34) to control the tightening of the clamp (31), so that the clamp (31) and the post insulator (1) are tightly fixed.

10. The method for using a transformer protection fuse that facilitates fuse replacement according to claim 9, characterized in that: The following steps are involved: Step 1: When the fuse is blown, the fuse tube (2) falls downward, the fuse tube (2) rotates toward the semi-annular clamping block (515), and the fuse tube (2) slides along the guide piece into the interior of the semi-annular clamping block (515) and is clamped and fixed with the semi-annular clamping block (515); Step 2: The impact force caused by the falling of the fuse tube (2) pushes the inner slide bar (513) into the support sleeve (512). When the conductor (523) in the movable groove (522) is aligned with the through hole (521), the support spring (524) pushes the conductor (523) out of the movable groove (522), so that the conductor (523) passes through the through hole (521) and pushes away the first elastic conductive sheet (527) and the second elastic conductive sheet (528) on both sides. Step 3: The first elastic conductive sheet (527) and the second elastic conductive sheet (528) are tightly contacted with the conductor (523), so that the power supply (526) and the warning light (525) are connected, thereby causing the warning light (525) to be powered and flashing, guiding maintenance personnel to find the fuse at night; Step 4: When the fuse tube (2) falls, the elastic pressing piece (25) is no longer engaged with the upper contact (21) of the fuse tube (2), and the elastic pressing piece (25) moves downward under its own elastic action; Step 5: The elastic pressing piece (25) controls the movement of the latch (537) through the connecting piece (538), so that the latch (537) is disengaged from the latch groove (536) of the annular block (535), thereby releasing the limiting effect on the rotating shaft (532), and the rotating shaft (532) can rotate freely; Step 6: The wind cap (534) is driven to rotate around the rotation axis (532) under the action of natural wind. The mirror reflective layer on the surface of the wind cap (534) will continuously reflect sunlight, causing the blown fuse to continuously flash, guiding maintenance personnel to find the fuse during the day.

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