A new type of round tube bolt connection fuse

Abstract

The present application relates to a novel round tube bolt connection fuse, comprising an end cover, an insulating sleeve, and a fuse piece. Two end covers are provided, and the insulating sleeve is respectively sleeved on the two end covers at both ends along its length direction. The end covers are connected to terminals, and the fuse piece is connected to the insulating sleeve. The end covers are provided with sand filling holes, and a sealing cover is embedded in the sand filling hole. The sealing cover is provided with a plurality of through holes. Before the fuse is solidified, quartz sand enters the insulating sleeve through the sand filling hole. When the insulating sleeve is filled with quartz sand, the sealing cover is embedded in the sand filling hole to close the sand filling hole. When the fuse is solidified, water vapor can enter the insulating sleeve through the through hole and penetrate into the quartz sand gap to improve the solidification effect.

Description

Technical Field

[0001] The present application relates to the field of fuses, and in particular to a novel round tube bolt-connected fuse. Background Art

[0002] A fuse is an electrical device that uses the heat generated by itself to melt the fuse and disconnect the circuit when the current exceeds the specified value. A fuse is a current protector made based on the principle that after the current exceeds the specified value for a period of time, the heat generated by itself will melt the fuse and disconnect the circuit.

[0003] A Chinese patent with the authorization announcement number CN205789846U discloses a fuse, including a sealing cover, a sand filling port and a sealing cap, wherein the sealing cap seals the sand filling port, a rotating shaft is provided inside the sealing cover, the sealing cap is connected to the sealing cover in a fixed axis rotation around the rotating shaft, and the sealing cap is fixed to the sealing cover. The utility model has the following advantages and effects: when quartz sand needs to be poured, the sealing cap is turned open to expose the pouring port. After the pouring is completed, the sealing cap is turned to return the sealing cap to its original position, and the sand filling port is sealed again, which is convenient for the secondary pouring of quartz sand into the fuse.

[0004] With regard to the above-mentioned related technologies, when the fuse is solidified, it is necessary to use the method of alternating penetration of "negative pressure vacuum → high-pressure steam" to allow high-pressure saturated water vapor to enter the gaps in the quartz sand of the fuse filler to melt the curing agent layer on its surface. The sealing cap closes the filling port to prevent water vapor from entering the fuse, which may easily affect the solidification effect of the fuse. Utility Model Content

[0005] In order to facilitate the entry of water vapor into the insulating sleeve and improve the curing effect, the present application provides a novel round tube bolt connection fuse.

[0006] A novel round tube bolt connection fuse provided in the present application adopts the following technical solution:

[0007] A novel round tube bolt-connected fuse comprises an end cover, an insulating sleeve and a fuse piece, wherein two end covers are provided, and the insulating sleeve is respectively sleeved on the two end covers at both ends along its length direction, and the end of the end cover away from the insulating sleeve is connected with a terminal, and the fuse piece is connected to the insulating sleeve, and the end cover located at one end of the insulating sleeve is provided with a sand filling hole, and a sealing cover is embedded in the sand filling hole, and the sealing cover is slidably connected to the sand filling hole along the length direction of the insulating sleeve, and the sealing cover is provided with a plurality of through holes.

[0008] By adopting the above technical solution, before the fuse is solidified, quartz sand enters the insulating sleeve through the sand filling hole. When the insulating sleeve is filled with quartz sand, the sealing cover is embedded in the sand filling hole to close the sand filling hole. When the fuse is solidified, water vapor can enter the insulating sleeve through the through hole and penetrate into the gaps in the quartz sand, thereby improving the solidification effect.

[0009] Optionally, a groove is provided at one end of the sealing cover away from the fuse, and the depth direction of the groove is consistent with the length direction of the insulating sleeve. The through hole is provided on the inner wall of the sealing cover close to the fuse, and the inner wall of the groove close to the fuse is arranged in a conical protrusion. A block is connected to the inner wall of the through hole, and one end of the block is connected to the inner wall of one end of the through hole along its length direction, and the other end of the block is spaced apart from the inner wall of the other end of the through hole.

[0010] By adopting the above technical solution and adding a stopper, when water vapor enters the insulating sleeve through the through hole, quartz sand can be prevented from falling out of the insulating sleeve through the through hole during the curing process.

[0011] Optionally, the end cover provided with the sand filling hole is further provided with a clearance groove, the clearance groove is arranged at one end of the end cover away from the fuse piece, and the clearance groove is connected with the sand filling hole.

[0012] By adopting the above technical solution, a clearance groove is additionally provided, so that it is convenient for operators to take out the sealing cover from the sand filling hole.

[0013] Optionally, a mounting seat is connected to one end of the end cap near the insulating sleeve, a plurality of fuses are provided, and the fuses are respectively connected to each side of the mounting seat, the fuse is connected to the side wall of the mounting seat, and both ends of the fuse are respectively connected to two mounting seats.

[0014] By adopting the above technical solution, a mounting seat is added, and a plurality of fuses are connected to each side of the mounting seat, so that a plurality of fuses are arranged in the insulating sleeve.

[0015] Optionally, the sand filling hole is located at the connection between two sides of the mounting seat.

[0016] By adopting the above technical solution, the sand filling holes are arranged at the connection between the two sides of the mounting seat, thereby improving the sand filling speed and reducing the situation in which the quartz sand is blocked by the fuse piece during the sand filling process and affects the sand filling speed.

[0017] Optionally, a connection port is provided on one side of the mounting seat along the length direction of the insulating sleeve.

[0018] By adopting the above technical solution and adding a connection port, the volume of the mounting seat is reduced and the production cost is reduced.

[0019] Optionally, the length direction of the fuse piece is consistent with the length direction of the insulating sleeve, and the fuse piece is arranged in a curved shape.

[0020] By adopting the above technical solution, the fuse is arranged in a curve, thereby increasing the length of the fuse, thereby improving the segmented testing capability of the fuse.

[0021] Optionally, the insulating sleeve is provided with a plurality of cylindrical pins on both ends of the insulating sleeve along the length direction, and the cylindrical pins are used to connect the insulating sleeve to the end cover.

[0022] By adopting the above technical solution, the insulating sleeve is connected to the end cover through the cylindrical pin, so that the insulating sleeve is stably connected to the end cover.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. Before the fuse is cured, quartz sand enters the insulating sleeve through the sand filling hole. When the insulating sleeve is filled with quartz sand, the sealing cover is embedded in the sand filling hole to close the sand filling hole. When the fuse is cured, water vapor can enter the insulating sleeve through the through hole and penetrate into the quartz sand gap to improve the curing effect;

[0025] 2. Add a stopper so that when water vapor enters the insulating sleeve through the through hole, it can also prevent quartz sand from falling out of the insulating sleeve through the through hole during the curing process;

[0026] 3. Add a clearance groove to facilitate the operator to remove the sealing cover from the sand filling hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural diagram of this embodiment.

[0028] Figure 2 It is a structural explosion diagram of this embodiment.

[0029] Figure 3 It is a front view of this embodiment.

[0030] Figure 4 This embodiment Figure 3 Sectional view along AA direction.

[0031] Explanation of the reference numerals: 100, end cap; 110, terminal; 120, sand-filling hole; 130, clearance groove; 140, mounting seat; 141, connection port; 200, insulating sleeve; 210, cylindrical pin; 300, fuse; 310, first section; 320, second section; 330, third section; 340, bending section; 350, disconnecting hole; 400, sealing cover; 410, through hole; 420, groove; 430, stopper. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 This application is described in further detail.

[0033] The embodiment of the present application discloses a novel round tube bolt connection fuse. Figure 1 and Figure 2A novel round tube bolt connection fuse includes an end cap 100, an insulating sleeve 200, and a fuse piece 300. Two end caps 100 are provided, and the two end caps 100 are spaced apart along the length direction of the insulating sleeve 200. The two ends of the insulating sleeve 200 along its length direction are respectively sleeved on the two end caps 100, and the central axis of the end cap 100 is collinear with the central axis of the insulating sleeve 200. The end of the end cap 100 away from the other end cap 100 is connected to a terminal 110, and the length direction of the terminal 110 is consistent with the length direction of the insulating sleeve 200. The fuse piece 300 is arranged in the insulating sleeve 200, and the length direction of the fuse piece 300 is consistent with the length direction of the insulating sleeve 200. The two ends of the fuse piece 300 along its length direction are respectively connected to the two end caps 100.

[0034] Reference Figure 3 and Figure 4 The end cap 100 located at one end of the insulating sleeve 200 in the length direction is provided with a sand filling hole 120, the depth direction of the sand filling hole 120 is consistent with the length direction of the insulating sleeve 200, a sealing cover 400 is embedded in the sand filling hole 120, and the sealing cover 400 is slidably connected in the sand filling hole 120 along the length direction of the insulating sleeve 200. The sealing cover 400 is provided with four through holes 410, the depth direction of the through holes 410 is consistent with the length direction of the insulating sleeve 200, and the through holes 410 are connected to the insulating sleeve 200. The four through holes 410 are distributed at intervals along the circumference of the sealing cover 400, and the length direction of the through holes 410 is consistent with the radial direction of the sealing cover 400. The through holes 410 are added to facilitate water vapor to enter the insulating sleeve 200 through the through holes 410, thereby improving the curing effect.

[0035] Reference Figure 4 The end cap 100 provided with the sand filling hole 120 is also provided with a clearance groove 130, and the clearance groove 130 is located at the end of the end cap 100 close to the terminal 110, and the clearance groove 130 is arranged in a circular ring shape, and the central axis of the clearance groove 130 is colinear with the central axis of the sand filling hole 120, and the clearance groove 130 is connected with the sand filling hole 120. The inner wall of the peripheral side of the clearance groove 130 is arranged to be inclined toward the side close to the sealing cover 400 near the end of the fuse 300.

[0036] Reference Figure 2 and Figure 4 The sealing cover 400 is provided with a groove 420 at one end away from the fuse 300, and the depth direction of the groove 420 is consistent with the length direction of the insulating sleeve 200. The through hole 410 is provided on the inner wall of the sealing cover 400 close to the fuse 300, and the groove 420 is provided in a conical protrusion along the inner wall of one side of the length direction of the insulating sleeve 200. A stopper 430 is connected to the inner wall of one end of the through hole 410 along its length direction, and the length direction of the stopper 430 is consistent with the length direction of the sealing cover 400, and one end of the stopper 430 is connected to the inner wall of one end of the through hole 410 along its length direction, and the other end of the stopper 430 is spaced from the inner wall of the other end of the through hole 410.

[0037] Reference Figure 2 The end cap 100 is connected to a mounting seat 140 at one end close to the insulating sleeve 200. The mounting seat 140 is rectangular, and a connection port 141 is provided on one side of the mounting seat 140 along the length direction of the insulating sleeve 200. The mounting seat 140 is arranged in a square ring shape. The fuse 300 is connected to two mounting seats 140 at both ends along its length direction. There are eight fuses 300. One end of the fuse 300 is fixedly connected to the side wall of the mounting seat 140 along its length direction, and each edge is connected to two fuses 300 respectively. One side wall of the mounting seat 140 corresponds to two fuses 300. The sand filling hole 120 is located at the connection of two edges of the mounting seat 140.

[0038] Reference Figure 2 The insulating sleeve 200 is provided with a plurality of cylindrical pins 210 at both ends along its length direction, and the plurality of cylindrical pins 210 are sequentially spaced and distributed around the insulating sleeve 200 along the circumference direction of the insulating sleeve 200, and the cylindrical pins 210 pass through the side wall of the insulating sleeve 200 along the radial direction of the insulating sleeve 200 and are embedded in the circumference of the end cover 100. The length direction of the fuse 300 is consistent with the length direction of the insulating sleeve 200. The fuse 300 includes a first section 310, a second section 320, and a third section 330. The length direction of the first section 310 is consistent with the length direction of the insulating sleeve 200, and the length directions of the first section 310, the second section 320, and the third section 330 are consistent. A bending section 340 is connected between the first section 310 and the second section 320, and between the second section 320 and the third section 330, and the bending section 340 is arranged in a curved shape. The first section 310 , the second section 320 , and the third section 330 are each provided with a plurality of dividing holes 350 .

[0039] The implementation principle of a novel round tube bolt connection fuse in the embodiment of the present application is as follows: before the fuse is cured, quartz sand enters the insulating sleeve 200 through the sand filling hole 120, and when the insulating sleeve 200 is filled with quartz sand, the sealing cover 400 is embedded in the sand filling hole 120. During the curing process, water vapor enters the insulating sleeve 200 through the through hole 410 and penetrates into the quartz sand gap, thereby improving the curing effect.

[0040] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A novel round tube bolt connection fuse, comprising an end cover (100), an insulating sleeve (200), and a fuse piece (300), wherein two end covers (100) are provided, and the insulating sleeve (200) is respectively sleeved on the two end covers (100) at both ends along its length direction, and the end of the end cover (100) away from the insulating sleeve (200) is connected to a terminal (110), and the fuse piece (300) is connected inside the insulating sleeve (200), characterized in that: An end cap (100) located at one end of the insulating sleeve (200) is provided with a sand filling hole (120), a sealing cover (400) is embedded in the sand filling hole (120), the sealing cover (400) is slidably connected to the sand filling hole (120) along the length direction of the insulating sleeve (200), and the sealing cover (400) is provided with a plurality of through holes (410).

2. A novel round tube bolt connection fuse according to claim 1, characterized in that: A groove (420) is provided at one end of the sealing cover (400) away from the fuse (300), and the depth direction of the groove (420) is consistent with the length direction of the insulating sleeve (200). The through hole (410) is provided on the inner wall of the sealing cover (400) on the side close to the fuse (300), and the inner wall of the groove (420) on the side close to the fuse (300) is arranged in the form of a conical protrusion. A stopper (430) is connected to the inner wall of the through hole (410), and one end of the stopper (430) is connected to the inner wall of one end of the through hole (410) along its length direction, and the other end of the stopper (430) is spaced from the inner wall of the other end of the through hole (410).

3. A novel round tube bolt connection fuse according to claim 2, characterized in that: The end cover (100) provided with the sand filling hole (120) is also provided with a clearance groove (130). The clearance groove (130) is provided at one end of the end cover (100) away from the fuse piece (300), and the clearance groove (130) is communicated with the sand filling hole (120).

4. A novel round tube bolt connection fuse according to claim 1, characterized in that: One end of the end cap (100) close to the insulating sleeve (200) is connected to a mounting seat (140), a plurality of fuse pieces (300) are provided, and the plurality of fuse pieces (300) are respectively connected to respective sides of the mounting seat (140), the fuse piece (300) is connected to a side wall of the mounting seat (140), and both ends of the fuse piece (300) are respectively connected to two mounting seats (140).

5. A novel round tube bolt connection fuse according to claim 4, characterized in that: The sand filling hole (120) is located at the connection between two sides of the mounting seat (140).

6. A novel round tube bolt connection fuse according to claim 4, characterized in that: The mounting seat (140) is provided with a connection opening (141) on one side along the length direction of the insulating sleeve (200).

7. A novel round tube bolt connection fuse according to claim 1, characterized in that: The length direction of the fuse piece (300) is consistent with the length direction of the insulating sleeve (200), and the fuse piece (300) is arranged in a curved shape.

8. A novel round tube bolt connection fuse according to claim 1, characterized in that: The insulating sleeve (200) is connected to the end cover (100) via a cylindrical pin (210).

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