CN108649370B - Voltage transformer or current transformer test interface tool - Google Patents
Voltage transformer or current transformer test interface tool Download PDFInfo
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- CN108649370B CN108649370B CN201810455137.4A CN201810455137A CN108649370B CN 108649370 B CN108649370 B CN 108649370B CN 201810455137 A CN201810455137 A CN 201810455137A CN 108649370 B CN108649370 B CN 108649370B
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- 238000012360 testing method Methods 0.000 title claims abstract description 77
- 239000002184 metal Substances 0.000 claims abstract description 41
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 230000002512 anti-withdrawal effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 238000010248 power generation Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000002441 reversible effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 241001672018 Cercomela melanura Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002633 protecting effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/10—Sockets for co-operation with pins or blades
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/02—Contact members
- H01R13/04—Pins or blades for co-operation with sockets
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
- H01R13/703—Structural association with built-in electrical component with built-in switch operated by engagement or disengagement of coupling parts, e.g. dual-continuity coupling part
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R24/00—Two-part coupling devices, or either of their cooperating parts, characterised by their overall structure
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- Details Of Connecting Devices For Male And Female Coupling (AREA)
- Testing Electric Properties And Detecting Electric Faults (AREA)
Abstract
The invention discloses a voltage transformer or current transformer test interface tool, which comprises a female socket and a sub-socket, wherein a plurality of rows of groove-shaped inclined rods are symmetrically fixed in the female socket, and embedded metal conductors are sleeved at the bottoms of grooves of a pair of groove-shaped inclined rods in each row and are respectively connected with conventional terminals; elastic metal transverse connecting rods are movably sleeved in the rear sides of the grooves of the pair of groove-shaped inclined rods along the transverse direction; female socket shell bottom plate is provided with multirow elasticity operation hole and experimental jack respectively, and sub-socket front side sets up many elasticity operation plugs and can match and insert in the elasticity operation hole that corresponds. In the test process, a special test wire is inserted into the interface device, a secondary loop of the mutual inductor is automatically disconnected, and the accident of transmitting power back to the primary side is avoided; after the test connector is pulled out after the test, the secondary side of the mutual inductor is automatically connected, and the situations that the secondary side of the mutual inductor is open-circuited and the like when primary equipment is put into operation can be avoided.
Description
The technical field is as follows:
the invention belongs to the technical field of hydroelectric equipment mutual inductor test connectors, and particularly relates to a voltage mutual inductor or current mutual inductor test interface tool.
Background art:
at present, a method of additionally arranging a connecting sheet on a terminal strip is adopted in China, when the terminal strip normally works, the connecting sheet is shifted to a working position, and two sides of the terminal strip are normally conducted; during testing, the connecting piece fixing screws are loosened, the connecting piece is shifted to a testing position and is fastened by the screws. The method is complex to implement on site, the connecting sheet is easy to forget to be pulled to a test position before a test, and power is reversely supplied to the primary side during the test, so that casualties and equipment damage are caused; after the test, the connecting sheet is forgotten to be shifted to a working position, the secondary side of the mutual inductor is opened, and major equipment events such as fire, unsuccessful start and the like are easily caused. And fastening screws on the terminal strip are often loosened, so that the fastening screws are easily and firmly fixed, and secondary circuits of the voltage transformer and the current transformer are connected in a virtual mode in the operation process, so that equipment events such as protection failure, unit emergency shutdown, fire and the like are caused.
The invention content is as follows:
the invention provides a voltage transformer or current transformer test interface tool aiming at the problem that hydropower equipment needs to carry out a large amount of test wiring on a voltage transformer and a current transformer loop and a wiring tool capable of being quickly converted is lacked at present, so that the aims of improving the efficiency of a patch cord and reducing the test workload are fulfilled.
The technical scheme adopted by the invention for solving the technical problems is as follows: a voltage transformer or current transformer test interface tool comprises a female socket and a male socket, wherein the female socket comprises a shell with an opening on one side, a plurality of fixed cross rods are fixed between two side walls of the shell from top to bottom in parallel, two sides of each fixed cross rod are respectively connected with symmetrical groove-shaped inclined rods in a penetrating manner, each pair of groove-shaped inclined rods form a splayed shape with a wide front part and a narrow back part, grooves are arranged on opposite side surfaces of the two groove-shaped inclined rods, embedded metal conductors are sleeved at the bottoms of the grooves, and each embedded metal conductor is positioned at the front ends of the groove-shaped inclined rods and extends outwards to form a plug-in terminal as a; meanwhile, a metal transverse connecting rod is movably sleeved in the rear side grooves of the pair of groove-shaped inclined rods on the same fixed cross rod along the transverse direction; a pair of guide holes is longitudinally arranged on each fixed cross rod, a longitudinal guide rod is sleeved in each guide hole in a matching manner, the rear ends of the two longitudinal guide rods are connected with the metal transverse connecting rod into a whole, and a spring is sleeved on each longitudinal guide rod; a plurality of elastic operation holes are formed in the middle of the shell bottom plate from top to bottom and correspond to the fixed cross rods in position; a plurality of rows of test jacks are symmetrically arranged on two sides of each elastic operation hole, and the positions of two symmetrical test jacks in each row correspond to the positions of the grooves of the corresponding groove-shaped inclined rods; the sub-socket comprises a shell, a plurality of elastic operation plugs are sequentially arranged in the center of the front side of the shell from top to bottom, each elastic operation plug can be inserted into a corresponding elastic operation hole in a matching mode, and the front end of each elastic operation plug can be supported in the center of a corresponding metal transverse connecting rod; an anti-withdrawal elastic supporting structure is arranged between the elastic operating plug and the elastic operating hole; a plurality of rows of assembly holes are symmetrically arranged in the shell body positioned at two sides of the elastic operation plug, test plugs are respectively inserted and fixed at the front sides of the assembly holes, and metal conductors are arranged inside the rear sides of the assembly holes to form special jacks for test lines; each test plug can be inserted into the corresponding test jack in a matching manner and is in contact with the corresponding embedded metal conductor.
The rear end of the groove-shaped diagonal rod groove is sleeved with a slot insert block, the slot insert block comprises a blind hole, an elastic conductive card is arranged in the blind hole, and an embedded metal conductor positioned in the groove-shaped diagonal rod groove is electrically connected with the elastic conductive card; the test plug can be inserted into the corresponding slot insert in a matching mode and is in contact with the corresponding embedded metal conductor.
The rear end of the groove-shaped diagonal rod is provided with an end plate and a through hole on the end plate, the inner side of the end plate is provided with an inner plate parallel to the end plate, the inner plate is provided with a through hole, and one side of the inner plate is connected with an elastic sheet so that the through hole of the inner plate and the through hole of the end plate are only partially overlapped; meanwhile, the front end of each test plug is provided with an annular groove.
According to the voltage transformer and current transformer test interface tool, the test interface device and the test connector are configured, a special test wire is inserted into the interface device in the test process, a secondary circuit of the transformer is automatically disconnected, and a back power transmission accident to a primary side cannot occur; after the test connector is pulled out after the test, the secondary side of the mutual inductor is automatically connected, and the situations that the secondary side of the mutual inductor is open-circuited and the like when primary equipment is put into operation can be avoided. The beneficial effects are as follows.
1. The connecting sheet which is manually disconnected and connected originally is arranged inside the interface device, and during testing, the secondary circuit is automatically disconnected and connected along with the plugging and unplugging of the test connector, so that the field use is safe and convenient, and the problem of reverse power transmission or secondary circuit disconnection caused by manual reasons can not occur.
2. The metal connecting rod is connected with the insulating shell through two fixing screw rods and fixed through clamping grooves on two sides, and short circuit caused by left-right swinging of the metal connecting rod is prevented.
3. Two springs are used and fixed on the fastening screw rod, so that the circuit disconnection caused by the falling of the springs or the failure of the springs can be prevented.
4. The test plug adopts a special jack for the test wire, can be connected with various test instruments, and has wide application.
Description of the drawings:
fig. 1 is a schematic view of the present invention in a practical state.
Fig. 2 is a partial sectional view of the female socket of fig. 1.
Fig. 3 is a side view of the sub-socket of fig. 1.
Fig. 4 is a front view of the female socket of fig. 1.
Fig. 5 is a rear side schematic view of fig. 3.
Fig. 6 is a schematic sectional view showing the structure of the elastic operation plug fitted in the elastic operation hole.
The specific implementation mode is as follows:
the Baoquan pumped storage power station is of an underground workshop type structure, is a reversible water pump turbine-power generation motor set, and has the functions of power generation, power generation phase modulation, water pumping phase modulation, accident standby and black start. Because the field has more primary equipment and complex working condition conversion, a large amount of voltage transformers and current transformers are installed on the field. The protection and monitoring system needs to collect a large amount of current and voltage for monitoring, controlling, regulating and protecting. Therefore, a large number of tests on the secondary equipment need to be carried out on loops of the voltage transformer and the current transformer, and special test interface tools of the voltage transformer and the current transformer need to be designed so as to carry out test work quickly and safely.
Example 1: as shown in fig. 1-5, reference numbers in various views of a voltage transformer or current transformer test interface tool: 1. 2, 3, 4, 5, 6, 7, 8 are conventional terminals. 9 is a metal transverse connecting rod, 10 is a longitudinal guide rod, 11, 12, 13 and 14 are primary side test jacks, and 15, 16, 17 and 18 are secondary side test jacks. Reference numeral 19 denotes an elastic operation hole, 20, 21, 22, and 23 denote primary side test plugs, and 24, 25, 26, and 27 denote secondary side test plugs. Reference numeral 28 denotes an elastic operation plug, reference numerals 29, 30, 31, and 32 denote primary test wire dedicated sockets, and reference numerals K, 33, 34, 35, and 36 denote secondary test wire dedicated sockets. 37 is a female socket, 38 is a sub-socket, 39 is a fixed cross bar, 40 is a groove-shaped inclined bar, 41 is an embedded metal conductor, 42 is a guide hole, and 43 is a spring; 44 is an arc-shaped groove, 45 is a cylindrical hole, 46 is a cylindrical elastic sheet, 47 is a clamping groove, and 48 is an elastic sheet fixing hole.
As shown in fig. 1, the female socket 37 and the female socket 38 are respectively provided with corresponding sockets and plugs, and the two sockets and the plugs can be butted and plugged together.
The internal structure of the female receptacle 37 is shown in fig. 2 and includes a housing with an opening at one side, a front side, and a back side, which is a bottom plate. Four fixed cross rods 39 are fixed between two side walls of the shell from top to bottom in parallel, two sides of each fixed cross rod 39 are respectively connected with symmetrical groove-shaped inclined rods 40 in a penetrating manner, and each pair of groove-shaped inclined rods 40 form a splayed shape with a wide front part and a narrow back part. Grooves are formed in the opposite side faces of the two groove-shaped diagonal rods 40, embedded metal conductors 41 are sleeved at the bottoms of the grooves, and plug terminals serving as two columns of eight conventional terminals A1 and A2 are extended outwards from the front ends of the groove-shaped diagonal rods 41.
A metal transverse connecting rod 9 is movably sleeved in the rear side grooves of a pair of groove-shaped inclined rods 40 on the same fixed cross rod 39 along the transverse direction. Each fixed cross bar 39 is provided with a pair of guide holes 42 along the longitudinal direction, each guide hole 42 is internally matched and sleeved with a longitudinal guide rod 10, the rear ends of the two longitudinal guide rods 10 are connected with the metal transverse connecting rod 9 into a whole, and each longitudinal guide rod 10 is sleeved with a spring 43. Normally, the metal transverse connecting rod 9 is pressed by the spring 43, and both ends of the metal transverse connecting rod are respectively supported in the grooves of the two groove-shaped diagonal rods 40 and are respectively electrically connected with the corresponding embedded metal conductors 41 in the grooves to form a passage. When the metal transverse connecting rod 9 is pushed forward, the embedded metal conductor 41 will be separated from the embedded metal conductors 41 at the two sides, and the power failure is formed. After the power is cut off, the metal transverse connecting rod 9 provides conditions for the connection of the test plug.
As shown in fig. 1 and 4, four elastic operation holes 19 are formed in the middle of the bottom plate of the housing from top to bottom, and each elastic operation hole 19 corresponds to each fixed cross bar 39.
And an anti-withdrawal elastic supporting structure is arranged between the elastic operating plug and the elastic operating hole. As shown in fig. 6, the elastic support structure is provided with a cylindrical hole 45 in the middle of the elastic operation plug, a cylindrical elastic sheet 46 is fittingly sleeved and fixed in the cylindrical hole 45, and one side of the cylindrical elastic sheet 46 is open so as to be compressed and deformed. The cylindrical spring 46 is fixed by a screw inserted into the cylindrical hole 45 from the bottom of the engaging groove 47 at the end of the elastic operation plug. Meanwhile, an arc-shaped groove 44 matched with the shape of a cylindrical elastic sheet 46 is arranged at the edge of the inner opening of the elastic operation hole. After the elastic operation plug carries the cylindrical elastic sheet 46 to pass through the elastic operation hole, the cylindrical spring is elastically supported in the arc-shaped groove 44 to form a clamping relation.
Four rows of test sockets, namely eight test sockets B1 and B2 in total, are symmetrically arranged on two sides of each elastic operation hole 19. The positions of the two symmetrical test jacks in each row correspond to the positions of the grooves of the corresponding groove-shaped diagonal rod 40.
As shown in fig. 3 and 5, the sub-socket 38 includes a housing, four elastic operation plugs are sequentially arranged from top to bottom at the center of the front side of the housing, each elastic operation plug can be inserted into the corresponding elastic operation hole 19 in a matching manner, and the front end of each elastic operation plug can be supported at the center of the corresponding metal cross-link 9. In the shell body positioned at two sides of the elastic operation plug, four rows of assembly holes are symmetrically arranged, and the front side of each assembly hole is respectively inserted and fixed with a test plug, namely eight test plugs C1 and C2 in two in each row. Metal conductors are arranged inside the rear side of each assembly hole to form jacks D1 and D2 special for test lines; each test plug can be inserted into a corresponding test jack in a matching manner and is in contact with a corresponding embedded metal conductor 41.
The voltage transformer and current transformer test interface tool of the embodiment has the working principle that: when the equipment is overhauled, the test connector is inserted into the test interface device, the spring 43 operation plug pushes the metal connecting rod, the spring is compressed, the conventional terminals on the two sides are disconnected (as shown in the figure), the primary side and the secondary side are disconnected, and test voltage and current can be respectively input to the primary side or the secondary side by using the test special line according to the overhaul work requirement. After the test is finished, the test plug is pulled out, the spring pushes the metal connecting rod, the conventional terminals on the two sides are conducted, and the current transformer and the voltage transformer can work normally.
Example 2: on the basis of the embodiment 1, the rear end of the groove-shaped diagonal rod 40 is sleeved with an inserting groove insert block, the inserting groove insert block comprises a blind hole, an elastic conductive card is arranged in the blind hole, and the embedded metal conductor 41 positioned in the groove of the groove-shaped diagonal rod 40 is electrically connected with the elastic conductive card; the test plugs can be matingly inserted into the corresponding socket blocks and contact the corresponding embedded metal conductors 41.
Example 3: on the basis of embodiment 1, an end plate is arranged at the rear end of the groove-shaped diagonal rod 40, a through hole is formed in the end plate, an inner plate parallel to the end plate is arranged on the inner side of the end plate, a through hole is formed in the inner plate, and an elastic sheet is connected to one side of the inner plate, so that the through hole of the inner plate and the through hole of the end plate are only partially overlapped; meanwhile, the front end of each test plug is provided with an annular groove.
Claims (2)
1. The utility model provides a voltage transformer or current transformer test interface instrument, includes female socket and sub-socket, characterized by: the female socket comprises a shell with an opening at one side, a plurality of fixed cross rods are fixed between two side walls of the shell from top to bottom in parallel, two sides of each fixed cross rod are respectively connected with symmetrical groove-shaped oblique rods in a penetrating manner, each pair of groove-shaped oblique rods form a splayed shape with a wide front part and a narrow back part, grooves are arranged on opposite side surfaces of the two groove-shaped oblique rods, embedded metal conductors are sleeved at the bottoms of the grooves, and a plug-in terminal is outwards extended from the front end of each embedded metal conductor, which is positioned at the groove-shaped oblique rod, to; meanwhile, a metal transverse connecting rod is movably sleeved in the rear side grooves of the pair of groove-shaped inclined rods on the same fixed cross rod along the transverse direction; a pair of guide holes is longitudinally arranged on each fixed cross rod, a longitudinal guide rod is sleeved in each guide hole in a matching manner, the rear ends of the two longitudinal guide rods are connected with the metal transverse connecting rod into a whole, and a spring is sleeved on each longitudinal guide rod; a plurality of elastic operation holes are formed in the middle of the shell bottom plate from top to bottom and correspond to the fixed cross rods in position; a plurality of rows of test jacks are symmetrically arranged on two sides of each elastic operation hole, and the positions of two symmetrical test jacks in each row correspond to the positions of the grooves of the corresponding groove-shaped inclined rods; the sub-socket comprises a shell, a plurality of elastic operation plugs are sequentially arranged in the center of the front side of the shell from top to bottom, each elastic operation plug can be inserted into a corresponding elastic operation hole in a matching mode, and the front end of each elastic operation plug can be supported in the center of a corresponding metal transverse connecting rod; an anti-withdrawal elastic supporting structure is arranged between the elastic operating plug and the elastic operating hole; a plurality of rows of assembly holes are symmetrically arranged in the shell body positioned at two sides of the elastic operation plug, test plugs are respectively inserted and fixed at the front sides of the assembly holes, and metal conductors are arranged inside the rear sides of the assembly holes to form special jacks for test lines; each test plug can be inserted into the corresponding test jack in a matching manner and is in contact with the corresponding embedded metal conductor;
the elastic supporting structure is characterized in that a cylindrical hole is formed in the middle of the elastic operating plug, a cylindrical elastic sheet is sleeved and fixed in the cylindrical hole in a matching mode, and an arc-shaped groove matched with the cylindrical elastic sheet in shape is formed in the edge of an inner side opening of the elastic operating hole;
the rear end of the groove-shaped diagonal rod groove is sleeved with a slot insert block, the slot insert block comprises a blind hole, an elastic conductive card is arranged in the blind hole, and an embedded metal conductor positioned in the groove-shaped diagonal rod groove is electrically connected with the elastic conductive card; the test plug can be inserted into the corresponding slot insert in a matching mode and is in contact with the corresponding embedded metal conductor.
2. The voltage or current transformer test interface tool of claim 1, comprising a female socket and a male socket, wherein: the rear end of the groove-shaped diagonal rod is provided with an end plate and a through hole on the end plate, the inner side of the end plate is provided with an inner plate parallel to the end plate, the inner plate is provided with a through hole, and one side of the inner plate is connected with an elastic sheet so that the through hole of the inner plate and the through hole of the end plate are only partially overlapped; meanwhile, the front end of each test plug is provided with an annular groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810455137.4A CN108649370B (en) | 2018-05-14 | 2018-05-14 | Voltage transformer or current transformer test interface tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810455137.4A CN108649370B (en) | 2018-05-14 | 2018-05-14 | Voltage transformer or current transformer test interface tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108649370A CN108649370A (en) | 2018-10-12 |
| CN108649370B true CN108649370B (en) | 2020-04-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810455137.4A Active CN108649370B (en) | 2018-05-14 | 2018-05-14 | Voltage transformer or current transformer test interface tool |
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| Country | Link |
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| CN (1) | CN108649370B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013025917A (en) * | 2011-07-19 | 2013-02-04 | Yazaki Corp | Joint connector |
| 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 |
| CN204760829U (en) * | 2015-06-18 | 2015-11-11 | 国网山东夏津县供电公司 | Current transformer secondary line encapsulation instrument in transformer substation |
| CN106129755A (en) * | 2016-06-02 | 2016-11-16 | 国家电网公司 | A kind of electric power adapter |
| CN208078189U (en) * | 2018-05-14 | 2018-11-09 | 国家电网公司 | Voltage transformer or current transformer test interface tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100591827B1 (en) * | 2005-07-05 | 2006-06-20 | 주식회사 현대오토넷 | Multi-function connector for vehicle |
-
2018
- 2018-05-14 CN CN201810455137.4A patent/CN108649370B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013025917A (en) * | 2011-07-19 | 2013-02-04 | Yazaki Corp | Joint connector |
| 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 |
| CN204760829U (en) * | 2015-06-18 | 2015-11-11 | 国网山东夏津县供电公司 | Current transformer secondary line encapsulation instrument in transformer substation |
| CN106129755A (en) * | 2016-06-02 | 2016-11-16 | 国家电网公司 | A kind of electric power adapter |
| CN208078189U (en) * | 2018-05-14 | 2018-11-09 | 国家电网公司 | Voltage transformer or current transformer test interface tool |
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| Publication number | Publication date |
|---|---|
| CN108649370A (en) | 2018-10-12 |
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