CN103474305A - Handle for oil-immersed fuse - Google Patents
Handle for oil-immersed fuse Download PDFInfo
- Publication number
- CN103474305A CN103474305A CN2013104260906A CN201310426090A CN103474305A CN 103474305 A CN103474305 A CN 103474305A CN 2013104260906 A CN2013104260906 A CN 2013104260906A CN 201310426090 A CN201310426090 A CN 201310426090A CN 103474305 A CN103474305 A CN 103474305A
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- China
- Prior art keywords
- connecting rod
- handle
- small
- sealing cover
- oil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims abstract description 32
- 230000002093 peripheral effect Effects 0.000 claims description 11
- 239000004677 Nylon Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 238000010248 power generation Methods 0.000 description 7
- 238000012544 monitoring process Methods 0.000 description 4
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920006337 unsaturated polyester resin Polymers 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
The invention discloses a handle of an oil-immersed fuse. The handle has the functions of moving timely and triggering a signal output device when the fuse moves. The handle comprises a handle body, a sealing cover, a pull rod and a linkage mechanism, wherein the handle body, the sealing cover, the pull rod and the linkage mechanism are sequentially connected. The pull rod comprises a large cylindrical head and a large connecting rod, the linkage mechanism comprises a small connecting rod, a front limiting screw and a rear limiting screw, the front end and the rear end of the small connecting rod are respectively provided with a flange on the radial side, the thickness of each flange is smaller than the width of a groove in the large connecting rod, the two flanges are respectively and axially provided with a thread through hole, the small connecting rod is arranged parallel with the large connecting rod in an axial moving mode, the screw head of the front limiting screw is located in a front inner hole of the large cylindrical head, the rod portion of the front limiting screw is inserted in a rear inner hole of the large cylindrical head in a movable mode and is in threaded connection with the thread through hole of the flange at the front end of the small connecting rod, the screw head of the rear limiting screw is located in a middle inner hole in handle body and in a middle inner hole of the sealing cover, and the rod portion of the rear limiting screw is inserted into a front inner hole of the handle and in a front inner hole of the sealing cover in a movable mode and is in threaded connection with the thread through hole of the flange at the rear end of the small connecting rod.
Description
Technical Field
The invention relates to a handle for an oil-immersed fuse.
Background
The oil-immersed high-voltage fuse is widely applied to wind power generation systems. The distance between a monitoring station of the wind power generation system and a wind field is generally far, and no signal is output after the general oil-immersed fuse acts, so that the monitoring station of the wind power generation system cannot find and break a three-phase circuit in time, the circuit runs in a phase-lacking mode, and safety risks and maintenance cost are increased. In addition, the oil-immersed high-voltage fuse has extremely high requirements on oil tightness. Oil is not allowed to enter the fuse in the long-term use process, otherwise, explosion and serious fire can happen when the fuse operates.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a handle for an oil-immersed fuse, which has the functions of timely acting and triggering a signal output device when the fuse acts, so that the signal output device sends out a fusing signal, and a monitoring station of a wind power generation system can timely remove faults.
The purpose of the invention is realized as follows: a handle for an oil-immersed fuse comprises a handle, a sealing cover and a pull rod which are connected in sequence; the handle also comprises a linkage mechanism; wherein,
the axial centers of the handle and the sealing cover are provided with a secondary step inner hole with a small front part and a big back part;
the pull rod comprises a large connecting rod eccentrically connected with the handle and the sealing cover and a large column head which is connected to the front end of the large connecting rod and is coaxial with the handle and the sealing cover, and a primary step inner hole which is large in front and small in back is formed in the axial center of the large column head; a groove is respectively formed on the outer peripheral surface of the two ends of the large connecting rod relative to one side of the axis of the large column head;
the linkage mechanism comprises a small connecting rod, a front limiting screw and a rear limiting screw; the front end and the rear end of the small connecting rod are respectively provided with a flange with the thickness smaller than the width of the groove on the large connecting rod towards one radial side, the two flanges are respectively provided with a threaded through hole in the axial direction, and the small connecting rod is arranged in parallel with the large connecting rod in a manner that the two flanges are embedded in the two grooves of the connecting rod in a one-to-one corresponding manner and can move back and forth; the head of the front limiting screw is positioned in the front inner hole of the large column head, and the rod part is movably inserted in the rear inner hole of the large column head and is in threaded connection with the threaded through hole of the front end flange of the small connecting rod; the screw head of the rear limiting screw is positioned in the middle inner holes of the handle and the sealing cover, and the rod part of the rear limiting screw movably penetrates through the front inner holes of the handle and the sealing cover and is in threaded connection with the threaded through hole of the rear end flange of the small connecting rod.
The handle for the oil-immersed fuse is characterized in that the front limiting screw and the rear limiting screw are made of nylon.
The handle for the oil-immersed fuse is characterized in that the rod part of the rear limiting screw is sleeved with an O-shaped sealing ring.
The handle for the oil-immersed fuse is characterized in that a rod part of the front limiting screw is sleeved with a return spring positioned in an inner hole in the front part of the large column head.
The handle for the oil-immersed fuse is characterized in that a plurality of layers of umbrella ribs are radially and convexly arranged on the outer peripheral surface of the large column head and the outer peripheral surface of the large connecting rod at intervals along the length direction, and a boss is arranged on one side, opposite to the small connecting rod, of the middle of the outer peripheral surface of the connecting rod.
The handle for the oil-immersed fuse is characterized in that the diameter of the small connecting rod is smaller than that of the large connecting rod, multiple layers of umbrella ribs are radially and convexly arranged on the outer peripheral surface of the small connecting rod at intervals along the length direction, and a small boss is respectively arranged on the front end flange and the rear end flange of the small connecting rod.
The handle for the oil-immersed fuse has the function of a trigger signal output device which can act in time when the fuse acts, namely the linkage mechanism with the impactor, and the linkage mechanism can act immediately and trigger the signal output device to send out a fusing signal when the fuse acts, so that a monitoring station of a wind power generation system can remove faults in time, and the handle is greatly helpful for maintaining the wind power generation system. The handle for the oil-immersed fuse disclosed by the invention provides a fusing signal for a wind power generation system, and simultaneously ensures the characteristics of full sealing, oil resistance, water resistance, moisture resistance, dust resistance, salt mist resistance, maintenance-free property and the like of the fuse, and can be used in environments such as desert, underground and the like.
Drawings
FIG. 1 is a schematic structural view of a handle for an oil-filled fuse according to the present invention;
FIG. 2 is a schematic structural diagram of a small connecting rod used in a handle of an oil-filled fuse according to the present invention;
Detailed Description
In order to better understand the technical solution of the present invention, the following detailed description is made with reference to the accompanying drawings by way of specific embodiments.
Referring to fig. 1 and 2, the handle for an oil-immersed fuse of the present invention includes a handle 1, a sealing cover 2, a pull rod 3, and a linkage mechanism, which are connected in sequence; wherein:
the handle 1, the sealing cover 2 and the pull rod 3 are integrally formed by unsaturated polyester resin through vacuum die casting;
the axial centers of the handle 1 and the sealing cover 2 are provided with a secondary step inner hole 10 with a small front part and a big back part;
the pull rod 3 comprises a large connecting rod 31 eccentrically connected with the handle 1 and the sealing cover 2 and a large column head 32 which is connected with the front end of the large connecting rod 31 and is coaxial with the handle 1 and the sealing cover 2, and the axial center of the large column head 32 is provided with a primary step inner hole 30 which is large in front and small in back; the peripheral surfaces of the two ends of the large connecting rod 31 are respectively provided with a groove corresponding to one side of the axis of the large column head 32; the outer peripheral surface of the large column head 32 and the outer peripheral surface of the large connecting rod 31 are respectively provided with a plurality of layers of umbrella ribs in a radial direction at intervals along the length direction so as to increase the creepage distance and strengthen the insulation;
the linkage mechanism comprises a small connecting rod 40 and front and rear limiting screws 43 and 44; the small connecting rod 40 is made of unsaturated polyester resin, the diameter of the small connecting rod is smaller than that of the large connecting rod 31, and the outer peripheral surface of the small connecting rod is respectively provided with a plurality of layers of umbrella ribs in a radial protruding mode at intervals along the length direction so as to increase the creepage distance and strengthen the insulation; the front and rear ends of the small connecting rod 40 are respectively provided with a flange 41, 42 towards one radial side, the thickness of the two flanges 41, 42 is smaller than the width of the groove on the large connecting rod 31, the two flanges 41, 42 are respectively provided with a threaded through hole (see figure 2) axially, the small connecting rod 40 can be arranged in parallel with the large connecting rod 31 in a way that the two flanges 41, 42 are embedded in the two grooves of the large connecting rod 31 in a one-to-one correspondence way; the head of the front limit screw 43 is positioned in the front inner hole of the first-stage stepped inner hole 30 of the large column head 32, and the rod part is movably inserted in the rear inner hole of the first-stage stepped inner hole 30 of the large column head 32 and is in threaded connection with the threaded through hole of the flange 41 at the front end of the small connecting rod 40; the rod part of the front limit screw 43 is also sleeved with a return spring 45 which is positioned in the front inner hole of the first-stage step inner hole 30 of the large cylindrical head 32; the head of the rear limiting screw 44 is positioned in the middle inner holes of the two-stage step inner holes 10 of the handle 1 and the sealing cover 2, and the rod part is movably inserted into the front inner holes of the two-stage step inner holes of the handle 1 and the sealing cover 2 and is in threaded connection with the threaded through hole of the flange 42 at the rear end of the small connecting rod 40; the rod part of the rear limiting screw 44 is also sleeved with a sealing ring 5, and the sealing ring 5 enables the rear limiting screw 44 to be in movable sealing contact with the hole walls of the front inner holes of the two-stage step inner holes 10 of the handle 1 and the sealing cover 2, so that the full sealing performance of the fuse is ensured. The sealing ring 5 is made of high-temperature-resistant insulating material.
The front and rear limiting screws 43 and 44 are made of nylon, so that the insulating property of the handle is ensured.
The middle part of the outer peripheral surface of the large connecting rod 31 is provided with a boss 310 on one side relative to the small connecting rod 4, so that the small connecting rod 40 is ensured not to be broken when contacting the large connecting rod 31 in transportation or irregular installation. The two flanges 41 and 42 of the small connecting rod 40 are respectively provided with a small boss 410 and 420, so that the two flanges 41 and 42 of the small connecting rod 40 cannot be broken due to collision with the pull rod 3 in the parallel movement process.
The oil-immersed fuse comprises a cylindrical base with a one-way opening, and a fuse carrier and a fuse link which are sequentially arranged in the base from the opening direction of the base; the fuse carrier comprises a handle and two electric contact couplers which are respectively fixed at two ends of the fuse carrier and are connected with the handle. A signal output device 6 is arranged in the inner holes at the rear parts of the inner holes 10 of the second-stage steps on the handle 1 of the handle and the sealing cover 2; the front end of the inner hole 30 of the first step of the big column head 32 of the handle is embedded with an electric contact coupler 7, and a striker is arranged in an inner cavity of one end of a fuse link connected with the electric contact coupler 7. When the circuit is overloaded or short-circuited, the melt in the fuse element is fused, so that the striker arranged in the fuse element loses tension and pops up, the front limit screw 43, the small connecting rod 40 and the rear limit screw 44 are pushed to move backwards, and the screw head of the rear limit screw 44 triggers the signal output device to send out a fusing signal.
The relationship between the width of the groove on the large link 31 and the thickness of the two flanges 41, 42 on the small link 40 is designed according to the moving stroke of the small link 40 to ensure that the rear limit screw 44 hits the signal output device 6 to send out a signal.
The return spring 45 enables the front set screw 43, the small link 40 and the rear set screw 44 to move forward to the original position after the striker is repaired.
The above embodiments are provided only for illustrating the present invention and not for limiting the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and therefore all equivalent technical solutions should also fall within the scope of the present invention, and should be defined by the claims.
Claims (6)
1. A handle for an oil-immersed fuse comprises a handle, a sealing cover and a pull rod which are sequentially connected, and is characterized by further comprising a linkage mechanism;
the axial centers of the handle and the sealing cover are provided with a secondary step inner hole with a small front part and a big back part;
the pull rod comprises a large connecting rod eccentrically connected with the handle and the sealing cover and a large column head which is connected to the front end of the large connecting rod and is coaxial with the handle and the sealing cover, and a primary step inner hole which is large in front and small in back is formed in the axial center of the large column head; a groove is respectively formed on the outer peripheral surface of the two ends of the large connecting rod relative to one side of the axis of the large column head;
the linkage mechanism comprises a small connecting rod, a front limiting screw and a rear limiting screw; the front end and the rear end of the small connecting rod are respectively provided with a flange with the thickness smaller than the width of the groove on the large connecting rod towards one radial side, the two flanges are respectively provided with a threaded through hole in the axial direction, and the small connecting rod is arranged in parallel with the large connecting rod in a manner that the two flanges are embedded in the two grooves of the connecting rod in a one-to-one corresponding manner and can move back and forth; the head of the front limiting screw is positioned in the front inner hole of the large column head, and the rod part is movably inserted in the rear inner hole of the large column head and is in threaded connection with the threaded through hole of the front end flange of the small connecting rod; the screw head of the rear limiting screw is positioned in the middle inner holes of the handle and the sealing cover, and the rod part of the rear limiting screw movably penetrates through the front inner holes of the handle and the sealing cover and is in threaded connection with the threaded through hole of the rear end flange of the small connecting rod.
2. The handle for an oil-filled fuse according to claim 1, wherein the front and rear limit screws are made of nylon.
3. The handle for the oil-filled fuse as recited in claim 1 or 2, wherein the rod of the rear limit screw is further sleeved with an O-ring.
4. The handle for the oil-filled fuse according to claim 1 or 2, wherein the rod part of the front limit screw is sleeved with a return spring positioned in a front inner hole of the large round column head.
5. The handle for an oil-filled fuse according to claim 1, wherein a plurality of layers of ribs are radially protruded on the outer circumferential surface of the large column head and the outer circumferential surface of the large connecting rod at intervals in the length direction, respectively, and a boss is provided on a side of the middle portion of the outer circumferential surface of the connecting rod opposite to the small connecting rod.
6. The handle for an oil-filled fuse according to claim 1, wherein the diameter of the small link is smaller than that of the large link, a plurality of ribs are radially protruded from an outer circumferential surface of the small link at intervals in a longitudinal direction, and a small boss is provided on each of front and rear end flanges of the small link.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426090.6A CN103474305B (en) | 2013-09-18 | 2013-09-18 | A kind of handle for oil fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426090.6A CN103474305B (en) | 2013-09-18 | 2013-09-18 | A kind of handle for oil fuse |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103474305A true CN103474305A (en) | 2013-12-25 |
| CN103474305B CN103474305B (en) | 2015-10-21 |
Family
ID=49799109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310426090.6A Active CN103474305B (en) | 2013-09-18 | 2013-09-18 | A kind of handle for oil fuse |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103474305B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943432A (en) * | 2014-04-17 | 2014-07-23 | 陕西振力电力科技有限公司 | Oil-immersed type full-range high-pressure current-limiting fuse protector with fusing indication and signal output functions |
| CN105428182A (en) * | 2015-12-29 | 2016-03-23 | 上海电器陶瓷厂有限公司 | Sealing cylinder base-type fuse handle |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146862A (en) * | 1977-08-29 | 1979-03-27 | Rte Corporation | Energy limiting oil immersible fuse |
| US4321576A (en) * | 1980-03-28 | 1982-03-23 | Rte Corporation | Fuse holder-under oil drywell loadbreak device |
| US6624736B1 (en) * | 2000-05-19 | 2003-09-23 | Abb Inc. | Fuse housing with rate release control plug |
| CN201075367Y (en) * | 2007-08-30 | 2008-06-18 | 谭迪 | High voltage fuse for ground-embedded type voltage transformer |
| CN101853756A (en) * | 2009-03-31 | 2010-10-06 | 上海电器陶瓷厂有限公司 | Handle of oil-immersed fuse used for American-type box substation |
| CN201773808U (en) * | 2010-04-02 | 2011-03-23 | 库柏西安熔断器有限公司 | Oil immersed fuse |
| CN201859822U (en) * | 2010-10-27 | 2011-06-08 | 浙江三门巨邦熔断器有限公司 | Fuse handle with fuse part |
| CN203491206U (en) * | 2013-09-18 | 2014-03-19 | 上海电器陶瓷厂有限公司 | A handle of an oil-immersed fuse |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO102774B1 (en) * | 1988-12-29 | 1992-05-09 | Signaling and stricking device for fusible cut-out for high voltage |
-
2013
- 2013-09-18 CN CN201310426090.6A patent/CN103474305B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4146862A (en) * | 1977-08-29 | 1979-03-27 | Rte Corporation | Energy limiting oil immersible fuse |
| US4321576A (en) * | 1980-03-28 | 1982-03-23 | Rte Corporation | Fuse holder-under oil drywell loadbreak device |
| US6624736B1 (en) * | 2000-05-19 | 2003-09-23 | Abb Inc. | Fuse housing with rate release control plug |
| CN201075367Y (en) * | 2007-08-30 | 2008-06-18 | 谭迪 | High voltage fuse for ground-embedded type voltage transformer |
| CN101853756A (en) * | 2009-03-31 | 2010-10-06 | 上海电器陶瓷厂有限公司 | Handle of oil-immersed fuse used for American-type box substation |
| CN201773808U (en) * | 2010-04-02 | 2011-03-23 | 库柏西安熔断器有限公司 | Oil immersed fuse |
| CN201859822U (en) * | 2010-10-27 | 2011-06-08 | 浙江三门巨邦熔断器有限公司 | Fuse handle with fuse part |
| CN203491206U (en) * | 2013-09-18 | 2014-03-19 | 上海电器陶瓷厂有限公司 | A handle of an oil-immersed fuse |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103943432A (en) * | 2014-04-17 | 2014-07-23 | 陕西振力电力科技有限公司 | Oil-immersed type full-range high-pressure current-limiting fuse protector with fusing indication and signal output functions |
| CN103943432B (en) * | 2014-04-17 | 2016-04-13 | 陕西振力电力科技有限公司 | The oil immersed type gamut high-voltage and current-limitation fuse that fusing instruction and signal export |
| CN105428182A (en) * | 2015-12-29 | 2016-03-23 | 上海电器陶瓷厂有限公司 | Sealing cylinder base-type fuse handle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103474305B (en) | 2015-10-21 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID SHANGHAI ELECTRIC POWER COMPANY Effective date: 20150529 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150529 Address after: 200071 Shanghai city Zhabei District Qingyun Road No. 517 Applicant after: Shanghai Electric Ceramic Works Co., Ltd. Applicant after: State Grid Shanghai Municipal Electric Power Company Address before: 200071 Shanghai city Zhabei District Qingyun Road No. 517 Applicant before: Shanghai Electric Ceramic Works Co., Ltd. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |