CN203838280U - Current transformer secondary circuit short circuit device - Google Patents
Current transformer secondary circuit short circuit device Download PDFInfo
- Publication number
- CN203838280U CN203838280U CN201420261967.0U CN201420261967U CN203838280U CN 203838280 U CN203838280 U CN 203838280U CN 201420261967 U CN201420261967 U CN 201420261967U CN 203838280 U CN203838280 U CN 203838280U
- Authority
- CN
- China
- Prior art keywords
- shank
- expansion rod
- expansion
- bar
- plug
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a current transformer secondary circuit short circuit device, which comprises a fixing body, plug-in rods, expansion rods, sliding semicircular sleeves, a conduction strip, and a button. The outer surface of each plug-in rod is provided with symmetrical holes, an expansion rod is arranged in the holes, and the inner surface of the expansion rod is provided with a convex part; each expansion rod is arranged in a sliding mode in one plug-in rod; the top ends of the plug-in rods are fixed inside the fixing body; each sliding semicircular sleeve and the outer surface of each plug-in rod are contacted in a sliding mode; rotary shafts are fixed in the fixing body, the rotary shafts are located above the plug-in rods, the middle position of a pressing strip is fixed in each rotary shaft, and two ends of the pressing strip are respectively contacted with the top end of the sliding semicircular sleeve and the top end of the expansion rod; the number of the plug-in rods is two; a connection shaft is vertically arranged inside the fixing body, the connection shaft is located between the two plug-in rods, the middle position of the conduction strip is connected with the connection shaft, and the button is arranged at the top part of the fixing body and is connected with the connection shaft. According to the current transformer secondary circuit short circuit device, stable mounting can be realized and quick conversion from a short circuit state to a non-short circuit state can be realized.
Description
Technical field
The utility model relates to a kind of electric power overhaul field, relates 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 can only, after the jack of secondary loop of mutual inductor takes off, could be cancelled short circuit, this has caused the inconvenience of work.
Utility model content
The purpose of this utility model 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.
The purpose of this utility model 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 utility model, in the time of 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 socket of shank insertion secondary loop of mutual inductor time, 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 utility model more firm.
To be converted to fast non-short circuit state, only need turning knob, drive conducting bar to rotate by coupling shaft, 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.
Insert after socket at short-circuit plug, 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 utility model 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, more stablize effective conducting thereby realize.
In sum, advantage of the present utility model and beneficial effect are:
1. in the socket that is arranged on secondary loop of mutual inductor that the utility model can be firm, avoided short-circuit plug loosening, caused open circuit of secondary loop of current transformer, generation high voltage burning apparatus even jeopardizes the problem of personal safety;
2. the utility model can be realized the quick conversion of short circuit and non-short circuit state, without taking off the utility model, 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 utility model 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, more stablize effective conducting thereby realize.
Brief description of the drawings
In order to be illustrated more clearly in embodiment of the present utility model, will be briefly described describing the required accompanying drawing of using in the utility model embodiment below.Apparent, the accompanying drawing in the following describes is only some embodiment that record in the utility model, 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 utility model;
Fig. 2 is working state figure of the present utility model;
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 utility model, below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out to clear, complete description.Apparent, embodiment described below is only the part in the utility model embodiment, instead of all.The embodiment recording based on the utility model, other all embodiment that those skilled in the art obtain in the situation that not paying creative work, all in the scope of the utility model protection.
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.
In the time of 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.Insert secondary loop of mutual inductor socket 12 when interior at shank 2, 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, drive conducting bar 5 to rotate by coupling shaft 11, 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.
Insert after secondary loop of mutual inductor socket 10 at short-circuit plug, spring 9 is compressed in the bottom of expansion rod 3, 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, more stablize effective conducting thereby realize.
As mentioned above, just can realize preferably the utility model.
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 |
|---|---|---|---|
| CN201420261967.0U CN203838280U (en) | 2014-05-22 | 2014-05-22 | Current transformer secondary circuit short circuit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420261967.0U CN203838280U (en) | 2014-05-22 | 2014-05-22 | Current transformer secondary circuit short circuit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203838280U true CN203838280U (en) | 2014-09-17 |
Family
ID=51516104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420261967.0U Expired - Fee Related CN203838280U (en) | 2014-05-22 | 2014-05-22 | Current transformer secondary circuit short circuit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203838280U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007357A (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 | Current transformer secondary loop short-circuit device |
-
2014
- 2014-05-22 CN CN201420261967.0U patent/CN203838280U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104007357A (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 | Current transformer secondary loop short-circuit device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20200522 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |