CN104007357A - Current transformer secondary loop short-circuit device - Google Patents
Current transformer secondary loop short-circuit device Download PDFInfo
- Publication number
- CN104007357A CN104007357A CN201410215855.6A CN201410215855A CN104007357A CN 104007357 A CN104007357 A CN 104007357A CN 201410215855 A CN201410215855 A CN 201410215855A CN 104007357 A CN104007357 A CN 104007357A
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- shank
- expansion
- expansion rod
- secondary loop
- rods
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Abstract
The invention discloses a current transformer secondary loop short-circuit device which comprises a fixing body, plug-in rods, expansion rods, a sliding semi-circular sleeve, a breakover strip and a rotary knob. The outer surface of the plug-in rod is provided with symmetric holes, expansion strips are arranged in the holes, and the inner surfaces of the expansion strips are provided with protruding portions. The expansion rods arranged in the plug-in rods in a sliding mode. The top ends of the plug-in rods are fixed in the fixing body. The sliding semi-circular sleeve is in sliding contact with the outer surfaces of the plug-in rods. A rotary shaft is fixed in the fixing body and located above the plug-in rods, the middle position of a press strip is fixed on the rotary shaft, and two ends of the press strip are respectively in contact with the top end of the sliding semi-circular sleeve and the top ends of the expansion rods. The number of the plug-in rods is two. A connecting shaft is vertically arranged in the fixing body and located between two plug-in rods, the middle position of the breakover strip is connected with the connecting shaft, and the rotary knob is arranged at the top of the fixing body and connected with the connecting shaft. The current transformer secondary loop short-circuit device can be firmly installed and can achieve quick switching of a short-circuit state and a non-short-circuit state.
Description
Technical field
The present invention relates to a kind of electric power overhaul field, relate in particular to a kind of secondary loop of mutual inductor short-circuit device.
Background technology
In relay protection work, often need to be by secondary loop of mutual inductor short circuit.
Current, mainly utilize short circuit joint to carry out short circuit to secondary loop of mutual inductor.Existing short circuit joint comprises a fittings body and is arranged at two shanks on fittings body, two shank mutual conduction.In use, shank is inserted in the jack of secondary loop of mutual inductor, can realize short circuit.
But existing short circuit joint is fixing unstable problem after existing and inserting, short circuit joint is easily loosening, causes open circuit of secondary loop of current transformer, produces high voltage burning apparatus and even jeopardizes personal safety.And existing short circuit joint could be cancelled short circuit after can only taking off from the jack of secondary loop of mutual inductor, this has caused the inconvenience of work.
Summary of the invention
Object of the present invention is to overcome the deficiencies in the prior art, and a kind of secondary loop of mutual inductor short-circuit device that can firmly install is provided, and this device can also be realized the quick conversion of short circuit and non-short circuit state.
Object of the present invention is achieved through the following technical solutions:
Secondary loop of mutual inductor short-circuit device, comprises fixed body, shank, expansion rod, slip semicircle cover, conducting bar, rotating shaft and press strip, knob and coupling shaft; Shank is hollow cylinder, and the outside surface of shank offers symmetrical hole, is provided with expansion bar in hole, and the upper end of expansion bar is connected with the hole wall in hole, and the other parts of expansion bar do not contact with the hole wall in hole, and the inside surface of expansion bar is provided with protuberance; Expansion rod slides and is arranged in shank, the top of expansion rod is positioned at outside shank, the bottom of expansion rod is taper, and the bottom of expansion rod is positioned at the top of protuberance, and the distance between two protuberances is greater than the minimum diameter of expansion rod bottom and is less than the maximum gauge of expansion rod bottom; The top of shank is fixed in fixed body; The outside surface sliding contact of slip semicircle cover and shank, the top of slip semicircle cover is positioned at top, shank top, and the bottom of slip semicircle cover is positioned at top, hole; Rotating shaft is fixed in fixed body, and rotating shaft is positioned at shank top, and the centre position of press strip is fixed in rotating shaft, and the two ends of press strip contact with the top of slip semicircle cover and the top of expansion rod respectively; Shank is two; Coupling shaft is vertically installed in fixed body, and coupling shaft is between two shanks, and the centre position of conducting bar is connected with coupling shaft, and the length of conducting bar is greater than two distances between shank, and knob is arranged at the top of fixed body and is connected with coupling shaft.
The present invention, when work, inserts shank in the socket of secondary loop of mutual inductor, and two shanks, by the conducting of conducting bar, are realized short circuit.In the time of in the socket of shank insertion secondary loop of mutual inductor, the plane contact that slip semicircle cover is other with socket, slip semicircle overlaps stressed and moves up with respect to shank, the top of slip semicircle cover and an end in contact of press strip, one end of press strip is moved upward, thereby the other end of press strip move down and contact with the top of expansion rod.Press strip to pressing down, makes the bottom of expansion rod insert between two protuberances and expansion bar is outwards pushed up expansion rod, and the bar that makes to expand is close to the inside surface of socket, thereby makes installation of the present invention more firm.
To be converted to fast non-short circuit state, only need turning knob, by coupling shaft, drive conducting bar to rotate, conducting bar is not contacted with shank.
Further, the outside surface of described expansion bar offers many anti-slip tanks.
Anti-slip tank is set, can further reduces short-circuit plug loosening problem in socket.
Further, the bottom of described shank is provided with shrouding; Also comprise the spring that is fixed on shrouding upper surface.
At short-circuit plug, insert after socket, the bottom of expansion rod is by spring-compressed, and after short-circuit plug takes out, spring upwards pushes up expansion rod, makes the bottom of expansion rod depart from protuberance, and expansion rod and expansion bar automatically reset.Increase shrouding and spring, short-circuit plug can be automatically reset, improved convenience when the present invention uses.
Further, the outside surface of described slip semicircle cover is provided with spacing preiection; In described fixed body, be provided with positive stop lug boss; Spacing preiection is positioned at positive stop lug boss top.
Spacing preiection and positive stop lug boss are set, and anti-skidding semicircle cover drops out outside fixed body.
Further, the two ends of described conducting bar offer with described shank outside surface adapt arc groove.
Arc groove is set, can makes the contact area of conducting bar and shank larger, thereby realize, more stablize effective conducting.
In sum, advantage of the present invention and beneficial effect are:
1. in the socket that is arranged on secondary loop of mutual inductor that the present invention can be firm, avoid short-circuit plug loosening, caused open circuit of secondary loop of current transformer, produced the problem that high voltage burning apparatus even jeopardizes personal safety;
2. the present invention can realize the quick conversion of short circuit and non-short circuit state, without taking off the present invention, has improved work efficiency;
3. anti-slip tank is set, can further reduces short-circuit plug loosening problem in socket;
4. increase shrouding and spring, short-circuit plug can be automatically reset, improved convenience when the present invention uses;
5. spacing preiection and positive stop lug boss are set, and anti-skidding semicircle cover drops out outside fixed body;
6. arc groove is set, can makes the contact area of conducting bar and shank larger, thereby realize, more stablize effective conducting.
Accompanying drawing explanation
In order to be illustrated more clearly in embodiments of the invention, will be briefly described describing the required accompanying drawing of using in the embodiment of the present invention below.Apparent, the accompanying drawing in the following describes is only some embodiment that record in the present invention, for a person skilled in the art, in the situation that not paying creative work, can also, according to accompanying drawing below, obtain other accompanying drawing.
Fig. 1 is structural representation of the present invention;
Fig. 2 is working state figure of the present invention;
Fig. 3 is the vertical view of conducting bar;
Wherein, the parts title that Reference numeral is corresponding is as follows:
1-fixed body, 2-shank, 3-expansion rod, 4-slip semicircle cover, 5-conducting bar, 6-rotating shaft, 7-press strip, 8-shrouding, 9-spring, 10-knob, 11-coupling shaft, 12-secondary loop of mutual inductor socket, 101-positive stop lug boss, 201-hole, 202-expansion bar, 203-protuberance, 204-anti-slip tank, 401-spacing preiection, 501-arc groove.
Embodiment
In order to make those skilled in the art understand better the present invention, below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out to clear, complete description.Apparent, embodiment described below is only the part in the embodiment of the present invention, rather than all.The embodiment recording based on the present invention, other all embodiment that those skilled in the art obtain in the situation that not paying creative work, all in the scope of protection of the invention.
Embodiment 1:
As depicted in figs. 1 and 2, secondary loop of mutual inductor short-circuit device, comprises fixed body 1, shank 2, expansion rod 3, slip semicircle cover 4, conducting bar 5, rotating shaft 6 and press strip 7, knob 10 and coupling shaft 11; Shank 2 is hollow cylinder, the outside surface of shank 2 offers symmetrical hole 201, in hole 201, be provided with expansion bar 202, the upper end of expansion bar 202 is connected with the hole wall in hole 201, the other parts of expansion bar 202 do not contact with the hole wall in hole 201, and the inside surface of expansion bar 202 is provided with protuberance 203; Expansion rod 3 slides and is arranged in shank 2, the top of expansion rod 3 is positioned at outside shank 2, the bottom of expansion rod 3 is taper, the bottom of expansion rod 3 is positioned at the top of protuberance 203, and the distance between two protuberances 203 is greater than the minimum diameter of expansion rod 3 bottoms and is less than the maximum gauge of expansion rod 3 bottoms; The top of shank 2 is fixed in fixed body 1; The outside surface sliding contact of slip semicircle cover 4 and shank 2, the top of slip semicircle cover 4 is positioned at shank 2 tops, tops, and the bottom of slip semicircle cover 4 is positioned at 201 tops, hole; Rotating shaft 6 is fixed in fixed body 1, and rotating shaft 6 is positioned at shank 2 tops, and the centre position of press strip 7 is fixed in rotating shaft 6, and the two ends of press strip 7 contact with the top of expansion rod 3 with the top of slip semicircle cover 4 respectively;
Shank 2 is two; Coupling shaft 11 is vertically installed in fixed body 1, coupling shaft 11 is between two shanks 2, the centre position of conducting bar 5 is connected with coupling shaft 11, and the length of conducting bar 5 is greater than two distances between shank 2, and knob 10 is arranged at the top of fixed body 1 and is connected with coupling shaft 11.
When work, shank 2 is inserted in secondary loop of mutual inductor socket 12, two shanks 2, by 5 conductings of conducting bar, are realized short circuit.At shank 2, insert secondary loop of mutual inductor socket 12 when interior, the plane contact that slip semicircle cover 4 is other with socket, it is 4 stressed and move up with respect to shank 2 that slip semicircle overlaps, the top of slip semicircle cover 4 and an end in contact of press strip 7, one end of press strip 7 is moved upward, thereby the other end of press strip 7 move down and contact with the top of expansion rod 3.Press strip 7 to pressing down, makes the bottom of expansion rod 3 insert between two protuberances 203 and expansion bar 202 is outwards pushed up expansion rod 3, and the bar 202 that makes to expand is close to the inside surface of socket.
To be converted to fast non-short circuit state, only need turning knob 10, by coupling shaft 11, drive conducting bar 5 to rotate, conducting bar 5 is not contacted with shank 2.
Embodiment 2:
As depicted in figs. 1 and 2, the present embodiment is on the basis of embodiment 1, and the outside surface of described expansion bar 202 offers many anti-slip tanks 204.
Embodiment 3:
As depicted in figs. 1 and 2, the present embodiment is on the basis of above-mentioned any one embodiment, and the bottom of described shank 2 is provided with shrouding 8; Also comprise the spring 9 that is fixed on shrouding 8 upper surfaces.
At short-circuit plug, insert after secondary loop of mutual inductor socket 10, the bottom of expansion rod 3 is by spring 9 compressions, and after short-circuit plug takes out, spring 9 upwards pushes up expansion rod 3, make the bottom of expansion rod 3 depart from protuberance 203, expansion rod 3 and expansion bar 202 automatically reset.
Embodiment 4:
As depicted in figs. 1 and 2, the present embodiment is on the basis of above-mentioned any one embodiment, and the outside surface of described slip semicircle cover 4 is provided with spacing preiection 401; In described fixed body 1, be provided with positive stop lug boss 101; Spacing preiection 401 is positioned at positive stop lug boss 101 tops.
Embodiment 5:
As shown in Figure 3, the present embodiment on the basis of above-mentioned any one embodiment, the two ends of described conducting bar 5 offer with described shank 2 outside surfaces adapt arc groove 501.
Arc groove 501 is set, can makes conducting bar 5 larger with the contact area of shank 2, thereby realize, more stablize effective conducting.
As mentioned above, just can realize preferably the present invention.
Claims (5)
1. secondary loop of mutual inductor short-circuit device, is characterized in that:
Comprise fixed body (1), shank (2), expansion rod (3), slip semicircle cover (4), conducting bar (5), rotating shaft (6) and press strip (7), knob (10) and coupling shaft (11);
Shank (2) is hollow cylinder, the outside surface of shank (2) offers symmetrical hole (201), in hole (201), be provided with expansion bar (202), the upper end of expansion bar (202) is connected with the hole wall of hole (201), the other parts of expansion bar (202) do not contact with the hole wall of hole (201), and the inside surface of expansion bar (202) is provided with protuberance (203);
Expansion rod (3) slides and is arranged in shank (2), the top of expansion rod (3) is positioned at outside shank (2), the bottom of expansion rod (3) is taper, the bottom of expansion rod (3) is positioned at the top of protuberance (203), and the distance between two protuberances (203) is greater than the minimum diameter of expansion rod (3) bottom and is less than the maximum gauge of expansion rod (3) bottom;
The top of shank (2) is fixed in fixed body (1); The outside surface sliding contact of slip semicircle cover (4) and shank (2), the top of slip semicircle cover (4) is positioned at top, shank (2) top, and the bottom of slip semicircle cover (4) is positioned at top, hole (201);
Rotating shaft (6) is fixed in fixed body (1), rotating shaft (6) is positioned at shank (2) top, it is upper that the centre position of press strip (7) is fixed on rotating shaft (6), and the two ends of press strip (7) contact with the top of expansion rod (3) with the top of slip semicircle cover (4) respectively;
Shank (2) is two;
Coupling shaft (11) is vertically installed in fixed body (1), coupling shaft (11) is positioned between two shanks (2), the centre position of conducting bar (5) is connected with coupling shaft (11), the length of conducting bar (5) is greater than the distance between two shanks (2), and knob (10) is arranged at the top of fixed body (1) and is connected with coupling shaft (11).
2. secondary loop of mutual inductor short-circuit device according to claim 1, is characterized in that:
The outside surface of described expansion bar (202) offers many anti-slip tanks (204).
3. secondary loop of mutual inductor short-circuit device according to claim 1, is characterized in that:
The bottom of described shank (2) is provided with shrouding (8);
Also comprise the spring (9) that is fixed on shrouding (8) upper surface.
4. secondary loop of mutual inductor short-circuit device according to claim 1, is characterized in that:
The outside surface of described slip semicircle cover (4) is provided with spacing preiection (401);
In described fixed body (1), be provided with positive stop lug boss (101);
Spacing preiection (401) is positioned at positive stop lug boss (101) top.
5. secondary loop of mutual inductor short-circuit device according to claim 1, is characterized in that:
The two ends of described conducting bar (5) offer with described shank (2) outside surface adapt arc groove (501).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215855.6A CN104007357B (en) | 2014-05-22 | 2014-05-22 | Secondary loop of mutual inductor short-circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410215855.6A CN104007357B (en) | 2014-05-22 | 2014-05-22 | Secondary loop of mutual inductor short-circuit device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104007357A true CN104007357A (en) | 2014-08-27 |
| CN104007357B CN104007357B (en) | 2016-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410215855.6A Active CN104007357B (en) | 2014-05-22 | 2014-05-22 | Secondary loop of mutual inductor short-circuit device |
Country Status (1)
| Country | Link |
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| CN (1) | CN104007357B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009356A (en) * | 2014-05-22 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Short connecting device |
| CN110763878A (en) * | 2019-11-12 | 2020-02-07 | 衡阳市华仪电力互感器有限公司 | Low-voltage side short-circuit device of power transformer |
| CN112051516A (en) * | 2020-08-03 | 2020-12-08 | 广东电网有限责任公司 | Current transformer secondary circuit short circuit instrument |
| CN112630474A (en) * | 2020-12-10 | 2021-04-09 | 广东电网有限责任公司中山供电局 | Integral type area insulating handle's current transformer secondary circuit short circuit instrument |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0551128A1 (en) * | 1992-01-10 | 1993-07-14 | Sumitomo Wiring Systems, Ltd. | Plug-in connector assembly |
| GB2292643B (en) * | 1994-08-25 | 1998-04-01 | Sumitomo Wiring Systems | Short circuit connector |
| CN2302608Y (en) * | 1997-06-24 | 1998-12-30 | 洛阳航空电器厂 | Wire spring type electric coupling device |
| CN101557057A (en) * | 2008-04-10 | 2009-10-14 | 贵州航天电器股份有限公司 | Electric connector capable of realizing short circuit and open circuit switching between contact elements |
| CN201549802U (en) * | 2009-11-30 | 2010-08-11 | 福建省电力有限公司厦门电业局 | High-voltage insulation short-circuiting device |
| CN202997125U (en) * | 2013-01-15 | 2013-06-12 | 湖州开合电子有限公司 | Short-circuit protection electrical connector |
| CN203838280U (en) * | 2014-05-22 | 2014-09-17 | 国网四川省电力公司成都市新都供电分公司 | Current transformer secondary circuit short circuit device |
-
2014
- 2014-05-22 CN CN201410215855.6A patent/CN104007357B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0551128A1 (en) * | 1992-01-10 | 1993-07-14 | Sumitomo Wiring Systems, Ltd. | Plug-in connector assembly |
| GB2292643B (en) * | 1994-08-25 | 1998-04-01 | Sumitomo Wiring Systems | Short circuit connector |
| CN2302608Y (en) * | 1997-06-24 | 1998-12-30 | 洛阳航空电器厂 | Wire spring type electric coupling device |
| CN101557057A (en) * | 2008-04-10 | 2009-10-14 | 贵州航天电器股份有限公司 | Electric connector capable of realizing short circuit and open circuit switching between contact elements |
| CN201549802U (en) * | 2009-11-30 | 2010-08-11 | 福建省电力有限公司厦门电业局 | High-voltage insulation short-circuiting device |
| CN202997125U (en) * | 2013-01-15 | 2013-06-12 | 湖州开合电子有限公司 | Short-circuit protection electrical connector |
| CN203838280U (en) * | 2014-05-22 | 2014-09-17 | 国网四川省电力公司成都市新都供电分公司 | Current transformer secondary circuit short circuit device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104009356A (en) * | 2014-05-22 | 2014-08-27 | 国网四川省电力公司成都市新都供电分公司 | Short connecting device |
| CN104009356B (en) * | 2014-05-22 | 2016-02-03 | 国网四川省电力公司成都市新都供电分公司 | A kind of short-circuit device |
| CN110763878A (en) * | 2019-11-12 | 2020-02-07 | 衡阳市华仪电力互感器有限公司 | Low-voltage side short-circuit device of power transformer |
| CN112051516A (en) * | 2020-08-03 | 2020-12-08 | 广东电网有限责任公司 | Current transformer secondary circuit short circuit instrument |
| CN112630474A (en) * | 2020-12-10 | 2021-04-09 | 广东电网有限责任公司中山供电局 | Integral type area insulating handle's current transformer secondary circuit short circuit instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104007357B (en) | 2016-06-22 |
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