CN205542675U - Fuse for oil -immersed transformer overload protection - Google Patents
Fuse for oil -immersed transformer overload protection Download PDFInfo
- Publication number
- CN205542675U CN205542675U CN201620260372.2U CN201620260372U CN205542675U CN 205542675 U CN205542675 U CN 205542675U CN 201620260372 U CN201620260372 U CN 201620260372U CN 205542675 U CN205542675 U CN 205542675U
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- fuse
- handle
- base
- solenoid coil
- tubaeform
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Abstract
The utility model discloses fuse for oil -immersed transformer overload protection, including base, fuse and handle, be provided with the sealing washer on the handle, the one end of handle is provided with the hasp, and the other end is provided with first external screw thread, the fuse cover is intraductal at the screw, and fuse's one end is provided with tubaeform cap, and the open end of tubaeform cap is located the outside of screw pipe, and this tip still is provided with circular inner chamber, and the inner chamber communicates with each other with tubaeform cap, and fuse's the other end is located the inside of screw pipe, the other end of handle passes tubaeform cap and inner chamber threaded connection, the base is an one -way open -ended drum die bed seat, and handle, fuse and screw pipe are located inside the base, sealing washer and inner wall of the base sealing contact on the handle. The utility model discloses simple structure, the installation is dismantled simple and conveniently, has improved work efficiency greatly, and be provided with the sealing washer between base and handle, has improved the leakproofness of fuse.
Description
Technical field
This utility model belongs to fuse technologies field, is specifically related to a kind of oil-filled transformer overload protection fuse.
Background technology
Fuse is mainly used in short circuit and the overload protection of the electrical equipment such as circuit and power transformer.When power system due to overload cause electric current exceed a certain numerical value, electrical equipment or circuit be short-circuited accident time, fuse can rapidly action within the time of regulation, cut off the electricity supply to play the effect of protection equipment, it is ensured that normal segments exempts from the destruction of short circuit accident.Oil-filled transformer overload protection high-tension fuse applies to power transformer overload protection use in American Unit Substation, is highly important electric elements in American Unit Substation.High-voltage and current-limitation fuse used by the requirement of American Unit Substation combined transformer is necessary for oil immersed type, can imbed underground.In American Unit Substation, expulsion fuse is connected with backup fuse and is formed overload and the FR protection of short circuit.Existing oil-filled transformer overload protection high-tension fuse structure is complicated, and installing/dismounting is the most inconvenient, after fuse member fuses, changes fuse member operating process extremely complex, and the poor sealing performance of fuse, easy leakage of oil.
Summary of the invention
The purpose of this utility model is to provide a kind of oil-filled transformer overload protection fuse, to overcome existing oil fuse structure complicated, changes fuse member process loaded down with trivial details, and the problem of poor sealing performance.
The technical solution adopted in the utility model is:
Oil-filled transformer overload protection fuse, including base, fuse member and handle, handle is provided with sealing ring, and one end of handle is provided with snap close, and the other end is provided with the first external screw thread；Fuse member is enclosed within solenoid coil, and one end of fuse member is provided with tubaeform cap, and the opening of tubaeform cap is positioned at the outside of solenoid coil, and one end of fuse member is additionally provided with round cavity, and inner chamber communicates with tubaeform cap, and the other end of fuse member is positioned at the inside of solenoid coil；The other end of handle is connected through tubaeform cap with thread in inner cavity；Base is the cylinder type base of a unidirectional opening, and handle, fuse member and solenoid coil are positioned at chassis interior；Sealing ring on handle is in sealing contact with base inner wall.
Wherein, the periphery of handle has been radially arranged a ring annular groove, and sealing ring is embedded in annular groove.
It addition, the other end of fuse member is provided with the 3rd external screw thread, the other end of fuse member is connected with solenoid coil inner thread.
Being additionally provided with bolt in above-mentioned solenoid coil, bolt coordinates with solenoid coil inner thread；The end of bolt withstands on the end of the fuse member end of thread.
It is characterized in that, the handle between snap close and sealing ring is additionally provided with the second external screw thread, the second external screw thread of handle is connected with the screw-internal thread fit of base inner wall.
The beneficial effects of the utility model are: simple in construction, and installing/dismounting easily operates；After fuse member fuses, change the extremely simple convenience of fuse member process, substantially increase work efficiency；And between base and handle, it is provided with sealing ring, improves the sealing of fuse.
Accompanying drawing explanation
Fig. 1 is the structural representation of handle in this utility model fuse；
Fig. 2 is the structural representation of fuse member in this utility model fuse；
Fig. 3 is the structural representation that this utility model fuse member is enclosed within solenoid coil；
Fig. 4 is the structural representation of solenoid coil in this utility model fuse；
Fig. 5 is the structural representation of bolt in this utility model fuse；
Fig. 6 is this utility model handle, fuse member, the solenoid coil structural representation together with bolts assemblies；
Fig. 7 is this utility model base sheath structural representation on handle.
In figure: 1-base, 2-fuse member, 3-handle, 4-sealing ring, 5-snap close, 6-solenoid coil, 7-is tubaeform cap, 8-bolt, 9-the first external screw thread, 10-the second external screw thread, 11-the 3rd external screw thread, 12. inner chambers.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in detail:
This utility model provides a kind of oil-filled transformer overload protection fuse, including base 1, fuse member 2, handle 3, solenoid coil 6 and bolt 8.
As it is shown in figure 1, one end of handle 3 is provided with snap close 5, the other end is provided with the first external screw thread 9；The periphery of handle 3 has been radially arranged a ring annular groove, and annular groove is embedded with sealing ring 4；The second external screw thread 10 it is additionally provided with on handle 3 between snap close 5 and sealing ring 4.
As in figure 2 it is shown, one end of fuse member 2 is provided with tubaeform cap 7, this end is additionally provided with round cavity 12, and the inwall of this inner chamber 12 is provided with female thread, and inner chamber 12 communicates with tubaeform cap 7；The other end of fuse member 2 is provided with the 3rd external screw thread 11.
As it is shown on figure 3, fuse member 2 is enclosed within solenoid coil 6 inside as shown in Figure 4, it is outside that the opening of tubaeform cap 7 is positioned at solenoid coil 6, and the other end of fuse member 2 is positioned at the inside of solenoid coil 6；3rd external screw thread 11 of fuse member 2 other end is connected with the screw-internal thread fit of solenoid coil 6 inwall；Being additionally provided with bolt 8 as shown in Figure 5 in solenoid coil 6, bolt 8 coordinates with solenoid coil 6 inner thread, and the end of bolt 8 withstands on the end of fuse member 2 end of thread.
As shown in Figure 6, the other end of handle 3 passes tubaeform cap 7, and the first external screw thread 9 on handle 3 is connected with the screw-internal thread fit of fuse member 2 inner chamber 12；It is internal that fuse member 2 is enclosed within solenoid coil 6.
Base 1 is the cylinder type base of a unidirectional opening, and it is internal that handle 3, fuse member 2 and solenoid coil 6 are positioned at base 1；As it is shown in fig. 7, the second screw thread 10 on handle 3 is connected with the screw-internal thread fit on base 1 inwall；Sealing ring 4 on handle 3 contacts with base 1 inner wall sealing.
The installation process of this utility model fuse is:
1. open the snap close 5 on handle 3, from base 1, extract handle 3, take out solenoid coil 6；
2. unclamp the bolt 8 in solenoid coil 6；
3. fuse member 2 is inserted in solenoid coil 6, and rotate fuse member 2 so that the end of thread of fuse member 2 is connected with solenoid coil 6 inner thread, and make the opening of tubaeform cap 7 be positioned at the outside of solenoid coil 6；
4. having good positioning after fuse member 2, the afterbody to solenoid coil 6 is screwed into bolt 8, and the end of bolt 8 withstands on the end of fuse member 2 end of thread, is pinned by fuse member 2；
5., after fuse member 2 and solenoid coil 6 being assembled, load in base 1；
The most again by handle 3 inserted base 1, in insertion process, sealing ring 4 has positioning action to handle 3, ensure that handle 3 does not comes off and offsets in installing swapping process, in the end of thread of handle 3 falls into the tubaeform cap 7 of fuse member 2, rotary handle 3, the end of thread making handle 3 is connected with inner chamber 12 threaded engagement, simultaneously, in handle 3 rotary course, the second external screw thread 10 on handle 3 is also connected with the female thread of base 1 inwall, and such handle 3 is i.e. arranged on fuse member 2, together with handle 3 is also fitted with base 1 simultaneously；Sealing ring 4 compresses by playing a part interference between annular groove inwall and base 1 inwall, reaches the effect of handle 3 and base 1 contact site seal isolation, significantly improves the sealing property of fuse；
7. the snap close 5 of last turning handle 3, pins fuse.
After fuse member fuses, it is necessary to replace with the new fuse member that the parameters such as model and specification are identical, be sure not to replace with other device.The fuse installing three-phase, unless affirmed that wherein one undertook fault current, even if an otherwise fuse action, all should change for other two.
This utility model oil-filled transformer overload protection high-tension fuse is applicable to exchange 50Hz; rated voltage 15.5KV; the high-voltage indoor power system of rated current 140A; it must be connected with oil-filled transformer short-circuit protection backup fuse could form the overload as power transformer and short-circuit protection, i.e. provides gamut protection.This utility model fuse is only used for protecting Short Circuit Fault on Secondary Transformer fault and the fault current of little scope in gamut protective effect.
Claims (5)
1. oil-filled transformer overload protection fuse; including base (1), fuse member (2) and handle (3); it is characterized in that: on described handle (3), be provided with sealing ring (4); one end of handle (3) is provided with snap close (5), and the other end is provided with the first external screw thread (9)；Described fuse member (2) is enclosed within solenoid coil (6), one end of fuse member (2) is provided with tubaeform cap (7), the opening of tubaeform cap (7) is positioned at the outside of solenoid coil (6), one end of fuse member (2) is additionally provided with round cavity (12), inner chamber (12) communicates with tubaeform cap (7), and the other end of fuse member (2) is positioned at the inside of solenoid coil (6)；The other end of described handle (3) is threadeded through tubaeform cap (7) with inner chamber (12)；Described base (1) is the cylinder type base of a unidirectional opening, and it is internal that handle (3), fuse member (2) and solenoid coil (6) are positioned at base (1)；Sealing ring (4) on handle (3) contacts with base (1) inner wall sealing.
Oil-filled transformer overload protection fuse the most according to claim 1, it is characterised in that: the periphery of described handle (3) has been radially arranged a ring annular groove, and sealing ring (4) is embedded in annular groove.
Oil-filled transformer overload protection fuse the most according to claim 1; it is characterized in that: the other end of described fuse member (2) is provided with the 3rd external screw thread (11), the other end of fuse member (2) is connected with solenoid coil (6) inner thread.
Oil-filled transformer overload protection fuse the most according to claim 3, it is characterised in that: being additionally provided with bolt (8) in described solenoid coil (6), bolt (8) coordinates with solenoid coil (6) inner thread；The end of bolt (8) withstands on the end of fuse member (2) end of thread.
Oil-filled transformer overload protection fuse the most according to claim 1; it is characterized in that: be additionally provided with the second external screw thread (10) on the handle (3) between described snap close (5) and sealing ring (4), second external screw thread (10) of handle (3) is connected with the screw-internal thread fit of base (1) inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620260372.2U CN205542675U (en) | 2016-03-31 | 2016-03-31 | Fuse for oil -immersed transformer overload protection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620260372.2U CN205542675U (en) | 2016-03-31 | 2016-03-31 | Fuse for oil -immersed transformer overload protection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205542675U true CN205542675U (en) | 2016-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620260372.2U Active CN205542675U (en) | 2016-03-31 | 2016-03-31 | Fuse for oil -immersed transformer overload protection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205542675U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114220719A (en) * | 2022-02-24 | 2022-03-22 | 珠海市联电科技有限公司 | Drop-out fuse and direct-current high-voltage trial delivery test system |
-
2016
- 2016-03-31 CN CN201620260372.2U patent/CN205542675U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114220719A (en) * | 2022-02-24 | 2022-03-22 | 珠海市联电科技有限公司 | Drop-out fuse and direct-current high-voltage trial delivery test system |
| CN114220719B (en) * | 2022-02-24 | 2022-05-20 | 珠海市联电科技有限公司 | Drop-out fuse and direct-current high-voltage trial transmission test system |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |