CN211670153U - Special oil-immersed fuse of new forms of energy - Google Patents
Special oil-immersed fuse of new forms of energy Download PDFInfo
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- CN211670153U CN211670153U CN202020735511.9U CN202020735511U CN211670153U CN 211670153 U CN211670153 U CN 211670153U CN 202020735511 U CN202020735511 U CN 202020735511U CN 211670153 U CN211670153 U CN 211670153U
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Abstract
An oil-immersed fuse special for new energy comprises a bracket shell, wherein a fuse part and a special-shaped insulating rod which are connected at the end parts are arranged in the inner space of the bracket shell, a through hole for installing a front electrode is processed on the bracket shell, a built-in platform is processed on the inner wall of the through hole, the tail end of the front electrode is embedded on the built-in platform, and the head part of the front electrode penetrates out of the through hole; a wiring terminal connected with the front electrode is arranged outside the bracket shell; a pressure spring mounting hole which is opposite to the through hole is formed in the side wall of the special-shaped insulating rod, a pressure spring is arranged in the pressure spring mounting hole, an electrode cap which is tightly pressed on the bottom surface of the front electrode is arranged at the top of the pressure spring, a conducting plate is arranged on the inner side of the electrode cap, one end of the conducting plate and the electrode cap are tightly pressed on the bottom surface of the front electrode through the pressure spring, and the other end of the conducting plate is tightly pressed on the end surface of the special; the end surface of the special-shaped insulating rod is provided with a hole which is provided with a collision head opposite to the fuse-link, and the collision head is connected with a linkage rod for controlling the movement of the collision head. The utility model discloses can not only improve the reliability of electricity connection, can improve sealing performance simultaneously.
Description
Technical Field
The utility model belongs to the high-voltage fuse field, concretely relates to special oil-immersed fuse of new forms of energy.
Background
The fuse special for new energy is mostly used in American case-type transformers, and the fuse is immersed in oil, so that the requirements on sealing and electric conduction are very highThe existing sealing method is to wind epoxy glass fiber material on the surface of the metal conductive ring to form a combination, because the combination is made of two different materials, the metal conductive ring is made of aluminum alloy, and the linear expansion coefficient is 1.62 × 10-5～2.47×10-5And the epoxy glass fiber is 3.0 × 10-5～6.0×10-5The difference between the two linear expansion coefficients is one time, and the linear expansion coefficients of the two materials of the combination body are different when the combination body is operated for a long time, so that micro displacement can occur to cause sealing failure. The existing conductive connection mode is that the fuse is in electrical contact with the metal conductive ring through the annular conductive contact finger, and the conductive contact finger can be softened at high temperature because the fuse element is a heating element, so that poor conductivity is easy to occur, and therefore a conductive and sealing structure of the oil-immersed fuse special for new energy needs to be designed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to the sealed and the not enough problem of electric conductive property of the special fuse of new forms of energy among the above-mentioned prior art, provide a special oil-immersed fuse of new forms of energy, not only can improve the reliability that fuse and binding post electricity are connected, can improve the holistic sealing performance of fuse simultaneously to satisfy special application environment's operation requirement.
In order to achieve the above object, the utility model adopts the following technical scheme:
an oil-immersed fuse special for new energy comprises a bracket shell, wherein a fuse part and a special-shaped insulating rod which are connected at the end parts are arranged in the inner space of the bracket shell, a through hole for installing a front electrode is processed on the bracket shell, a built-in platform is processed on the inner wall of the through hole, the tail end of the front electrode is embedded on the built-in platform, and the head part of the front electrode penetrates out of the through hole; a wiring terminal connected with the front electrode is arranged outside the bracket shell; a pressure spring mounting hole which is opposite to the through hole is formed in the side wall of the special-shaped insulating rod, a pressure spring is arranged in the pressure spring mounting hole, an electrode cap which is tightly pressed on the bottom surface of the front electrode is arranged at the top of the pressure spring, a conducting plate is arranged on the inner side of the electrode cap, one end of the conducting plate and the electrode cap are tightly pressed on the bottom surface of the front electrode through the pressure spring, and the other end of the conducting plate is tightly pressed on the end surface of the special-shaped; and the end surface of the special-shaped insulating rod is provided with a collision head opposite to the fuse-link, and the collision head is connected with a linkage rod for controlling the movement of the collision head.
The fuse link and the end part of the special-shaped insulating rod are connected by threads.
The end face of the special-shaped insulating rod is connected with the supporting frame, the supporting frame is bent to the side wall of the special-shaped insulating rod from the end face of the special-shaped insulating rod, an electrode cap through hole is machined in the bent portion, and the flanging of the electrode cap is limited on the through hole of the supporting frame.
The support frame and the conducting strip are tightly pressed on the end face of the special-shaped insulating rod and are fastened on the special-shaped insulating rod through screws.
The support frame, the conducting strip, the electrode cap and the pressure spring are installed on the special-shaped insulating rod together to form an integrated structure.
The tail end of the front electrode is provided with a sealing groove along the circumferential direction, and a special-shaped sealing ring is arranged in the sealing groove to seal the support shell.
The head of the front electrode is provided with a stud, the wiring terminal is sleeved on the stud part extending out of the front electrode, the outer part of the bracket shell is screwed in a matching way with the stud of the front electrode by a fixing nut, and the special-shaped sealing ring is deformed, compressed and sealed in the screwing process.
Compared with the prior art, the utility model discloses following beneficial effect has: the front electrode is pressed on the conductive cap and the conductive sheet at one end through a strong pressure spring on the special-shaped insulating rod to form tight electric connection, and the other end of the conductive sheet is pressed on the end head of the special-shaped insulating rod. The conductive cap forms a floating electrode cap under the supporting action of the pressure spring, and strong press-fit type floating connection is formed between the floating electrode cap and the front electrode, so that the assembly error can be adjusted. The reliability of the electrical connection of the fuse and the connecting terminal is improved. When the fuse fuses, an impactor arranged in the fuse is knocked out and collides with the collision head to drive the linkage rod to act, and the microswitch is triggered to play a role in signal output. The through hole for installing the front electrode is processed on the support shell, the built-in platform is processed on the inner wall of the through hole, the tail end of the front electrode is embedded on the built-in platform, the head of the front electrode penetrates out of the through hole, the wiring terminal is reliably connected with the front electrode, sealing is applied at the matching position of the built-in platform and the tail end of the front electrode, the support shell can have a reliable sealing effect, and the use performance is good.
Further, the utility model discloses heterotypic sealing washer is installed in the special groove of sealing washer of leading electrode, and binding post is adorned to the part that the leading electrode stretches out the support shell to locking with fixation nut, make heterotypic sealing washer take place to warp through the taut leading electrode of fixation nut in the time of locking, compress tightly between built-in platform and leading electrode, play reliable sealed effect.
Drawings
FIG. 1 is a sectional view of the structure of the present invention;
FIG. 2 is a schematic diagram of the floating electrical connection between the front electrode and the electrode cap of the present invention;
FIG. 3 is a schematic view of a sealing structure of the bracket shell of the present invention;
in the drawings: 1-a fuse; 2-a stent shell; 3-a wiring terminal; 4-a support frame; 5-a built-in platform; 6-a conductive sheet; 7-electrode cap; 8-fixing the nut; 9-a front electrode; 10-special-shaped sealing rings; 11-a pressure spring; 12-bumping head; 13-special-shaped insulating rods; 14-linkage rod.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the utility model discloses special oil-immersed fuse of new forms of energy includes with heterotypic insulator spindle 13 with threaded connection mode zonulae occludens's fuse-link 1, pack into in the support shell 2 holes of a single file open-ended cylinder jointly to reliably connect. An inner hole made of a model is arranged at the upper end of the special-shaped insulating rod 13, a pressure spring 11 is arranged in the inner hole, one end of the conducting plate 6 is arranged in the inner wall of the electrode cap 7 and is buckled on the pressure spring 11 after combination, the support frame 4 is sleeved on the electrode cap 7 at the moment, the flange of the electrode cap 7 is limited on the inner hole of the support frame 4, the other ends of the support frame 4 and the conducting plate 6 are installed and tightly pressed on the end face of the special-shaped insulating rod 13, and the special-shaped insulating rod assembly is fastened on the end face of the special-shaped insulating rod 13 through screws.
The special-shaped sealing ring 10 is arranged in a sealing groove of the front electrode 9, then the special-shaped sealing ring is arranged in a through hole on the built-in platform 5 which is formed by molding on the support shell 2 from an inner hole of the support shell 2, a stud part on the front electrode 9 extends out of the through hole on the built-in platform 5, the wiring terminal 3 is sleeved on the stud which extends out of the front electrode 9, then the fixing nut 8 is matched and screwed with the stud of the front electrode 9, the special-shaped sealing ring 10 is deformed in the screwing process, so that the front electrode 9 and the built-in platform 5 achieve a reliable sealing effect, and meanwhile, the wiring terminal 3 is tightly pressed to enable the wiring terminal 3 and the front electrode 9 to achieve reliable electric connection.
As can be seen from figure 2, the electrode cap 7 is arranged at an opening at the upper end of the support frame 4 and is pressed on the contact surface of the front electrode 9 by the pressure spring 11, and the assembly error of the special-shaped insulating rod assembly can be adjusted and can be automatically aligned due to the floatable function of the pressure spring 11, so that the electrode cap 7 is reliably electrically contacted with the front electrode 9. As can be seen from fig. 3, the molded built-in platform 5 of the bracket 2 and the front electrode 9 are fastened by the fixing nut 8 to compress the special-shaped sealing ring 10, and a reliable sealing structure of the bracket shell 2 and the front electrode 9 is completed.
The utility model discloses a special oil-immersed fuse of new forms of energy, binding post 3 are compressed tightly between fixation nut 8 and front electrode 9, and are reliably connected with front electrode 9, and front electrode 9 sticiss on electrode cap 7 and one end conducting strip 6 through pressure spring 11 on the heterotypic insulator spindle 13, and inseparable electricity is connected. The other end of the conducting strip 6 and the supporting frame 4 are pressed together at the end of the special-shaped insulating rod 13, and the screw on the fuse 1 is tightly connected with the internal thread on the end surface of the special-shaped insulating rod 13 and is pressed at the end of the special-shaped insulating rod 13 pressed by the supporting frame 4 and the conducting strip 6, so that the fuse 1 is reliably electrically connected with the wiring terminal 3. When the fuse fuses, an impactor arranged in the fuse is knocked out and collides with the collision head 12 to drive the linkage rod 14 to act, and the microswitch is triggered to play a role in signal output. When the support shell 2 is manufactured, a built-in platform 5 is ground in an inner hole, a through hole is formed in the built-in platform 5, a front electrode 9 provided with a special-shaped sealing ring 10 extends out of the through hole in the inner wall of the support shell 2, the special-shaped sealing ring 10 is pressed on the built-in platform 5, a wiring terminal 3 is arranged on the part, extending out of the support shell 2, of the front electrode 9 and is locked by a fixing nut 8, and the support shell 2 has a reliable sealing effect due to the compression of the special-shaped sealing ring 10 during locking.
The utility model discloses a special oil-immersed fuse of new forms of energy not only can improve the reliability that fuse-element and binding post electricity are connected, can improve the holistic sealing performance of fuse simultaneously to satisfy special application environment's operation requirement.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and it should be understood by those skilled in the art that the present invention can be modified and replaced by other embodiments without departing from the spirit and principle of the present invention, and the modifications and the replacements also fall within the protection scope of the appended claims.
Claims (7)
1. The utility model provides a special oil-immersed fuse of new forms of energy which characterized in that: the lead-free welding device comprises a support shell (2), wherein a fuse part (1) and a special-shaped insulating rod (13) which are connected with each other at the end parts are arranged in the inner space of the support shell (2), a through hole for installing a front electrode (9) is processed on the support shell (2), a built-in platform (5) is processed on the inner wall of the through hole, the tail end of the front electrode (9) is embedded on the built-in platform (5), and the head part of the front electrode penetrates out of the through hole; a wiring terminal (3) connected with the front electrode (9) is arranged outside the bracket shell (2); a pressure spring mounting hole which is opposite to the through hole is formed in the side wall of the special-shaped insulating rod (13), a pressure spring (11) is arranged in the pressure spring mounting hole, an electrode cap (7) which is tightly pressed on the bottom surface of the front electrode (9) is arranged at the top of the pressure spring (11), a conducting plate (6) is arranged on the inner side of the electrode cap (7), one end of the conducting plate (6) and the electrode cap (7) are tightly propped against the bottom surface of the front electrode (9) through the pressure spring (11), and the other end of the conducting plate (6) is tightly pressed on the end face of the special-shaped insulating rod (; the end face of the special-shaped insulating rod (13) is provided with a striker (12) opposite to the fuse-link (1), and the striker (12) is connected to a linkage rod (14) for controlling the movement of the striker.
2. The oil-immersed fuse special for the new energy resource according to claim 1, wherein:
the fuse element (1) is in threaded connection with the end part of the special-shaped insulating rod (13).
3. The oil-immersed fuse special for the new energy resource according to claim 1, wherein: the end face of the special-shaped insulating rod (13) is connected with the supporting frame (4), the supporting frame (4) is bent to the side wall of the special-shaped insulating rod (13) from the end face of the special-shaped insulating rod (13), an electrode cap through hole is machined in the bent part, and the flanging of the electrode cap (7) is limited on the through hole of the supporting frame (4).
4. The oil-immersed fuse special for the new energy resource according to claim 3, wherein: the supporting frame (4) and the conducting strip (6) are tightly pressed on the end surface of the special-shaped insulating rod (13) and are fastened on the special-shaped insulating rod (13) through screws.
5. The oil-immersed fuse special for the new energy resource according to claim 4, wherein: the support frame (4), the conducting strip (6), the electrode cap (7) and the pressure spring (11) are installed on the special-shaped insulating rod (13) together to form an integrated structure.
6. The oil-immersed fuse special for the new energy resource according to claim 1, wherein: the tail end of the front electrode (9) is provided with a sealing groove along the circumferential direction, and a special-shaped sealing ring (10) is arranged in the sealing groove to seal the support shell (2).
7. The oil-immersed fuse special for the new energy resource according to claim 6, wherein: the head of the front electrode (9) is processed with a stud, the wiring terminal (3) is sleeved on the stud part extending out of the front electrode (9), the outer part of the bracket shell (2) is matched and screwed with the stud of the front electrode (9) by a fixing nut (8), and the special-shaped sealing ring (10) is deformed, compressed and sealed in the screwing process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020735511.9U CN211670153U (en) | 2020-05-07 | 2020-05-07 | Special oil-immersed fuse of new forms of energy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020735511.9U CN211670153U (en) | 2020-05-07 | 2020-05-07 | Special oil-immersed fuse of new forms of energy |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211670153U true CN211670153U (en) | 2020-10-13 |
Family
ID=72743799
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020735511.9U Active CN211670153U (en) | 2020-05-07 | 2020-05-07 | Special oil-immersed fuse of new forms of energy |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211670153U (en) |
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2020
- 2020-05-07 CN CN202020735511.9U patent/CN211670153U/en active Active
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