CN201464617U - Portable connecting wire switching device - Google Patents
Portable connecting wire switching device Download PDFInfo
- Publication number
- CN201464617U CN201464617U CN2009201280112U CN200920128011U CN201464617U CN 201464617 U CN201464617 U CN 201464617U CN 2009201280112 U CN2009201280112 U CN 2009201280112U CN 200920128011 U CN200920128011 U CN 200920128011U CN 201464617 U CN201464617 U CN 201464617U
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- Prior art keywords
- connection terminal
- disconnecting link
- lead
- switch
- link switch
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- 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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- 238000005259 measurement Methods 0.000 claims description 34
- 238000006243 chemical reaction Methods 0.000 claims description 10
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 5
- 238000000034 method Methods 0.000 description 10
- 238000012360 testing method Methods 0.000 description 9
- 230000005611 electricity Effects 0.000 description 8
- 230000003449 preventive effect Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 206010014357 Electric shock Diseases 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000035939 shock Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000005283 ground state Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
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Abstract
A portable connecting wire switching device comprises a first lead wire connecting terminal, a second lead wire connecting terminal, a shielded wire connecting terminal, a positive lead wire connecting terminal, a high-voltage measuring connecting terminal, a first knife switch, a second knife switch, a third knife switch and a fourth knife switch, wherein both the first lead wire connecting terminal and the second knife switch are accessed in parallel to two wiring terminals of each of the four knife switches; two wiring terminals at the outlet terminal of the first knife switch are connected with the high-voltage measuring connecting terminal and the shielded wire connecting terminal respectively; two wiring terminals at the outlet terminal of the second knife switch are connected with the high-voltage measuring connecting terminal and the positive lead wire connecting terminal respectively; two wiring terminals at the outlet terminal of the third knife switch are connected with the shielded wire connecting terminal and the high-voltage measuring connecting terminal respectively; and the fourth knife switch adopts an earth knife switch. The utility model has the advantages of simple structure, simple and convenient operation, obviously reduced workload, manpower conservation, high efficiency and safe operation.
Description
Technical field
The utility model relates to a kind of electrical equipment, particularly a kind of portable wiring conversion equipment that is used for electric preventive trial.
Background technology
In order to guarantee the safe operation of high-tension apparatus, equipment operation will carry out the electric preventive trial of equipment after one period time limit, when 500kV switch (isolating switch) and CT (current transformer) are carried out preventive trial, for recording the test figure of isolating switch and CT, need insert the lead-in wire of measuring high pressure, shielding high pressure and just connecing signal in isolating switch and high-pressure side, CT top repeatedly, and utilization is just connecing the mode of rotating with reversal connection and finishes DATA REASONING to isolating switch and CT.In this process, need between surveying instrument and the high-tension apparatus to be connected and just can carry out DATA REASONING after lead-in wire connects by two.
Realize at present mode that above-mentioned ways of connecting mainly adopts insulating bar the to hang overlap joint that goes between.Specific implementation is as follows: because hi-line is higher apart from ground, at first need 5 joints to 6 joint insulating bars are connected into a sufficiently long insulating bar, need 2 altogether, the preceding termination at insulating bar goes between again.Need in the measurement first lead-in wire and second lead-in wire are overlapped on CT top and switch intermetallic metal section respectively, first lead-in wire and second other end that goes between high-tension measurement line, the high-tension shielding line by metal wire clamp and surveying instrument and wherein two terminals of just connecing three terminals of signal wire respectively are connected by metering system.During wiring, need be by the conversion of the mode of connection, respectively to first switch segments, the second switch section reaches CT and measures.At first with first the lead-in wire be connected on the high-tension measurement end, second the lead-in wire be connected on the high-tension shielding end, measure the test figure of first switch segments in the reversal connection mode; The concrete operations step of measuring the second switch section is: first lead-in wire is connected on the high-tension measurement end, with second lead-in wire with just connect signal end and be connected, measure the test figure of second switch section just to connect mode; The concrete operations step of measuring CT is: the first lead-in wire termination is connected with the high-tension shielding end, and second lead end is connected with the high-tension measurement end, measures the test figure of CT with the mode of reversal connection.The above-mentioned mode of connection has the following disadvantages:
1, induced electricity is hurted sb.'s feelings.In the 500kV switch yard, the equipment preventive trial all is only to stop a loop basically at every turn, faces the loop mutually and continues operation.Because it is near to face the energized circuit distance mutually, the lead of power failure and the induced voltage on the equipment can reach hundreds of to thousands of volts, can puncture weak insulating medium.We are connected with measured equipment by lead-in wire with insulating bar, and in conversion mode of connection process, testing crew is very easily hit by the strong induced electricity of lead end and meets accident, and the staff has produced the feared state of mind to the induced electricity in the experiment work.
2, in the test in the past, under the strong situation of induced electricity, often adopt and take off insulating bar, the overlap joint of separate leads and measured equipment and keep certain safe distance after, carry out the conversion of the mode of connection again.But because high-tension apparatus is higher apart from ground, usually connect to 6 joint insulating bars with 5 joints and go between, required insulating bar is very long, in the frequent thread-changing during lower beam, insulating bar is out of trim very easily, swing to adjacent energized circuit, if lead-in wire waves the safe distance that will dwindle with high-voltage operation equipment in air, consequence is hardly imaginable.
If 3 owing to weather or close on the loop reason, the lead-in wire peripheral electromagnetic field is strong, even separate leads and measured equipment, practice in the past shows, lead waves cutting magnetic line and also produces induced charge in air, also can discharge to human body in conversion mode of connection process.
4, the mode that usefulness just connects, reversal connection is switched is back and forth measured the test figure of every loop first switch segments, second switch section and CT respectively need switch the mode of connection altogether 9 times, the splicing ear (surveying instrument measuring junction) that carries out that needs in the operating process not stop goes between with first and the second overlap joint work that goes between, complicated operation, workload is big.
5. in process of the test, when last lower beam operation and conversion wiring, hurt sb.'s feelings by the surveying instrument internal circulation for preventing induced electricity, need two lead end changing-over lines to carry out simultaneously, it is more to operate required personnel, labor intensive, and efficient is low.
How to solve the problems of the technologies described above and become people need solution badly in preventive trial work a difficult problem.
Summary of the invention
The purpose of this utility model just provides a kind of portable wiring conversion equipment, and this device only needs once to go between and overlaps the surveying work of realizing first switch segments, second switch section and CT three equipment components, safe and convenient, efficient height.
The purpose of this utility model is to realize by such technical scheme, it includes the first lead-in wire connection terminal, the second lead-in wire connection terminal, shielding line connection terminal, positive wiring connection terminal, high-tension measurement connection terminal, the first disconnecting link switch, the second disconnecting link switch, the 3rd disconnecting link switch, four blade lock switch, wherein:
The first lead-in wire connection terminal and the second lead-in wire connection terminal, two binding posts that insert the first disconnecting link switch, the second disconnecting link switch, the 3rd disconnecting link switch, four blade lock switch end of incoming cables in parallel respectively;
Two binding posts of the first disconnecting link switch leading-out terminal are connected with the shielding line connection terminal with the high-tension measurement connection terminal respectively, when closing the first disconnecting link switch and other disconnecting link switch when disconnecting, conduct between the high-tension measurement connection terminal and the first lead-in wire connection terminal, conduct between the shielding line connection terminal and the second lead-in wire connection terminal;
Two binding posts of the second disconnecting link switch leading-out terminal are connected with positive wiring connection terminal with the high-tension measurement connection terminal respectively, when the close second disconnecting link switch and other disconnecting link switch disconnect, conduct between the positive wiring connection terminal and the second lead-in wire connection terminal, conduct between the high-tension measurement connection terminal and the first lead-in wire connection terminal;
Two binding posts of the 3rd disconnecting link switch leading-out terminal are connected with the high-tension measurement connection terminal with the shielding line connection terminal respectively, when close the 3rd disconnecting link switch and other disconnecting link switch disconnect, conduct between the high-tension measurement connection terminal and the second lead-in wire connection terminal, conduct between the shielding line connection terminal and the first lead-in wire connection terminal;
Four blade lock switch is the ground connection disconnecting link, two binding post series connection back ground connection of its leading-out terminal.
Principle of work of the present utility model is as follows: first lead-in wire and second lead-in wire are high-voltage connection, first lead-in wire is connected lead-in wire by two of insulating bar overlap joints respectively with second lead-in wire and is connected to first lead connecting terminal of the present utility model and second lead connecting terminal, the shielding line end of surveying instrument, positive terminals and high-tension measurement end are connected on shielding line connection terminal of the present utility model, positive wiring connection terminal and high-tension measurement splicing ear respectively.Change and the thread-changing function with regard to realizing the positive reversal connection mode in the measurement by the corresponding disconnecting link switch of minute closing operation, four blade lock switch is the ground connection disconnecting link, can be grounded protection, the preliminary work before conveniently measuring.
Before the measurement, the first disconnecting link switch, the second disconnecting link switch, the 3rd disconnecting link switch are separated position, the four blade lock is a ground state, have ground protection and can conveniently carry out the lead-in wire connection work of other links, measuring process is as follows: (1) closed first disconnecting link switch, separate four blade lock switch, promptly can finish the surveying work of the first switch segments equipment with opposition method; (2) separate the first disconnecting link switch, the closed second disconnecting link switch, promptly can finish the surveying work of second switch section with positive connection; (3) separate the second disconnecting link switch, closed the 3rd disconnecting link switch promptly can be finished with opposition method CT is carried out surveying work.After measuring end, closed four blade lock switch carries out ground protection, can conveniently carry out surveying instrument and shift, removes further works such as lead-in wire, commutation.
In above-mentioned measuring process, only need measuring the preliminary work stage, carry out the overlap joint work of one time first lead-in wire and second lead-in wire and high-tension apparatus lead-in wire, other stages only need be according to the measuring equipment branch, the corresponding disconnecting link switch of closing operation can be realized the measurement to this equipment, as long as the measurement of finishing every group of switch and CT is three branch closing operation disconnecting link switches, reduced the number of times of going up the lower beam operation in the traditional experiment work and switching pigtail splice, reduced adjust lead-in wire and ground safe distance workload, not only save manpower, improved efficient, and the most important thing is to avoid induced electricity hurt sb.'s feelings, reduced the generation of shock hazard, the security performance height.
Owing to adopted technique scheme, the utlity model has characteristics simple in structure, easy and simple to handle and safe and reliable; Use the utility model not only can significantly reduce the workload in the experiment work, save manpower, improved work efficiency greatly, and the most important thing is effectively to avoid the electric shock of induced electricity to the staff, significantly lowered the incidence of electric shock casualty accident, the security when having improved operation.
Description of drawings
Description of drawings of the present utility model is as follows:
Accompanying drawing is formation of the present utility model and key wiring diagram;
Among the figure: 1. first lead connecting terminal; 2. second lead connecting terminal; 3. shielding line connection terminal; 4. high-tension measurement splicing ear; 5. positive wiring connection terminal; 6. the first disconnecting link switch; 7. the second disconnecting link switch; 8. the 3rd disconnecting link switch; 9. four blade lock switch.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples:
As shown in Figure 1, portable wiring conversion equipment described in the utility model, it includes the first lead-in wire connection terminal 1, the second lead-in wire connection terminal 2, shielding line connection terminal 3, positive wiring connection terminal 4, high-tension measurement connection terminal 5, the first disconnecting link switch 6, the second disconnecting link switch 7, the 3rd disconnecting link switch 8, four blade lock switch 9, wherein:
The first lead-in wire connection terminal 1 and the second lead-in wire connection terminal 2, two binding posts that insert the first disconnecting link switch 6, the second disconnecting link switch 7, the 3rd disconnecting link switch 8, four blade lock switch 9 ends of incoming cables in parallel respectively;
Two binding posts of the first disconnecting link switch, 6 leading-out terminals are connected with shielding line connection terminal 3 with high-tension measurement connection terminal 5 respectively, when closing the first disconnecting link switch 6 and other disconnecting link switch when disconnecting, conduct between the high-tension measurement connection terminal 5 and the first lead-in wire connection terminal 1, conduct between the shielding line connection terminal 3 and the second lead-in wire connection terminal 2;
Two binding posts of the second disconnecting link switch, 7 leading-out terminals are connected with positive wiring connection terminal 4 with high-tension measurement connection terminal 5 respectively, when the close second disconnecting link switch 7 and other disconnecting link switch disconnect, conduct between the positive wiring connection terminal 4 and the second lead-in wire connection terminal 2, conduct between the high-tension measurement connection terminal 5 and the first lead-in wire connection terminal 1;
Two binding posts of the 3rd disconnecting link switch 8 leading-out terminals are connected with high-tension measurement connection terminal 5 with shielding line connection terminal 3 respectively, when close the 3rd disconnecting link switch 8 and other disconnecting link switch disconnect, conduct between the high-tension measurement connection terminal 5 and the second lead-in wire connection terminal 2, conduct between the shielding line connection terminal 3 and the first lead-in wire connection terminal 1;
Four blade lock switch 9 is the ground connection disconnecting link, two binding post series connection back ground connection of its leading-out terminal.
The utility model only needs measuring the preliminary work stage, the overlap joint operation once goes between, being about to first lead-in wire and second lead-in wire overlaps with the high-tension apparatus lead-in wire, other stages only need be carried out the corresponding disconnecting link switch of branch closing operation according to measuring equipment and can be realized test figure surveying work to this equipment, the measurement of finishing every group of switch and CT only needs three branch closing operation disconnecting link switches to get final product, significantly reduced the number of times of going up the lower beam operation in the traditional experiment work and switching pigtail splice, reduced adjust lead-in wire and ground safe distance workload, not only save manpower, improved efficient, and the most important thing is to avoid induced electricity hurt sb.'s feelings, reduced the generation of shock hazard, the security performance height.
Claims (1)
1. portable wiring conversion equipment, it is characterized in that: it includes the first lead-in wire connection terminal (1), the second lead-in wire connection terminal (2), shielding line connection terminal (3), positive wiring connection terminal (4), high-tension measurement connection terminal (5), the first disconnecting link switch (6), the second disconnecting link switch (7), the 3rd disconnecting link switch (8) and four blade lock switch (9), wherein
The first lead-in wire connection terminal (1) and the second lead-in wire connection terminal (2) two binding posts that insert the first disconnecting link switch (6), the second disconnecting link switch (7), the 3rd disconnecting link switch (8) and four blade lock switch (9) end of incoming cables in parallel respectively;
Two binding posts of first disconnecting link switch (6) leading-out terminal are connected with shielding line connection terminal (3) with high-tension measurement connection terminal (5) respectively, when the close first disconnecting link switch (6) and other disconnecting link switch disconnect, conduct between the high-tension measurement connection terminal (5) and the first lead-in wire connection terminal (1), conduct between the shielding line connection terminal (3) and the second lead-in wire connection terminal (2);
Two binding posts of second disconnecting link switch (7) leading-out terminal are connected with positive wiring connection terminal (4) with high-tension measurement connection terminal (5) respectively, when the close second disconnecting link switch (7) and other disconnecting link switch disconnect, conduct between the positive wiring connection terminal (4) and the second lead-in wire connection terminal (2), conduct between the high-tension measurement connection terminal (5) and the first lead-in wire connection terminal (1);
Two binding posts of the 3rd disconnecting link switch (8) leading-out terminal are connected with high-tension measurement connection terminal (5) with shielding line connection terminal (3) respectively, when close the 3rd disconnecting link switch (8) and other disconnecting link switch disconnect, conduct between the high-tension measurement connection terminal (5) and the second lead-in wire connection terminal (2), conduct between the shielding line connection terminal (3) and the first lead-in wire connection terminal (1);
Four blade lock switch (9) is the ground connection disconnecting link, two binding post series connection back ground connection of its leading-out terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201280112U CN201464617U (en) | 2009-07-13 | 2009-07-13 | Portable connecting wire switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201280112U CN201464617U (en) | 2009-07-13 | 2009-07-13 | Portable connecting wire switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201464617U true CN201464617U (en) | 2010-05-12 |
Family
ID=42391966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201280112U Expired - Fee Related CN201464617U (en) | 2009-07-13 | 2009-07-13 | Portable connecting wire switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201464617U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245838A (en) * | 2013-04-27 | 2013-08-14 | 国家电网公司 | Cable insulation test system |
| CN105510863A (en) * | 2016-01-20 | 2016-04-20 | 国网上海市电力公司 | Short-circuiting system and short-circuiting method of secondary terminal of mutual inductor |
-
2009
- 2009-07-13 CN CN2009201280112U patent/CN201464617U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103245838A (en) * | 2013-04-27 | 2013-08-14 | 国家电网公司 | Cable insulation test system |
| CN103245838B (en) * | 2013-04-27 | 2015-09-23 | 国家电网公司 | A kind of cable insulation test system |
| CN105510863A (en) * | 2016-01-20 | 2016-04-20 | 国网上海市电力公司 | Short-circuiting system and short-circuiting method of secondary terminal of mutual inductor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20121012 Owner name: MAINTENANCE BRANCH COMPANY OF CHONGQING ELECTRIC P Free format text: FORMER OWNER: CHONGQING POWER COMPANY EXTRA HIGH VOLTAGE BUREAU Effective date: 20121012 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121012 Address after: 400039 No. 92 Torch Road, Erlang hi tech Zone, Chongqing hi tech Development Zone Patentee after: Chongqing Electric Power Corporation Maintenance Branch Patentee after: State Grid Corporation of China Address before: 400039 No. 92 Torch Road, Erlang hi tech Zone, Chongqing hi tech Development Zone Patentee before: Chongqing Power Company Extra High Voltage Bureau |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20180713 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |