CN201765255U - Heavy-current test clamp - Google Patents
Heavy-current test clamp Download PDFInfo
- Publication number
- CN201765255U CN201765255U CN2010202505243U CN201020250524U CN201765255U CN 201765255 U CN201765255 U CN 201765255U CN 2010202505243 U CN2010202505243 U CN 2010202505243U CN 201020250524 U CN201020250524 U CN 201020250524U CN 201765255 U CN201765255 U CN 201765255U
- Authority
- CN
- China
- Prior art keywords
- metal fixing
- current test
- extension
- anchor clamps
- lower metal
- 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 - Lifetime
Links
Images
Landscapes
- Clamps And Clips (AREA)
Abstract
The utility model discloses a heavy-current test clamp, which comprises an upper metal fixing part, a lower metal mixing part, an upper metal flexible connector and a lower metal flexible connector. The upper metal fixing part comprises an upper semicircle, a first extension portion and a second extension portion, wherein the first extension portion and the second extension portion respectively extend from two end points of the upper semicircle. The lower metal fixing part comprises a lower semicircle, a third extension portion and a fourth extension portion, wherein the third and fourth extension portions respectively extend from two end points of the lower semicircle. The first, second, third and fourth extension portions are all provided with fasteners used for connecting the upper metal fixing part with the lower metal fixing part together, diameters of the semicircles of the upper metal fixing part and the lower metal fixing part are identical, and the upper and lower metal flexible connectors are respectively fixed on the inner surfaces of the upper and lower metal fixing parts and connected together on the first, second, third and fourth extension portions. The heavy-current test clamp can effectively expand area contacting with a bus to be tested and increase loading capacity of test facilities and testing precision.
Description
Technical field
The utility model relates to the electrical measurement field, particularly relates to a kind of high-current test anchor clamps at the direct current transportation current transformer.
Background technology
At super extra-high voltage current conversion station,, need carry out big electric current through-flow test at the current transformer primary side in order to check current transformer primary side and secondary side relevant control, protection, supervisory system.Because the electric current that injects at primary side is big (maximum can reach 4000A), the restriction of tested equipment gross output again simultaneously, therefore the voltage of output is all lower, generally between 4-8V.When the peak power of testing apparatus output fixedly the time, according to electric power formula P=I
2R in order to obtain bigger output current, just need reduce resistance R as far as possible in test loop.And the resistance of the various device lead in the loop is certain, so just needs to reduce the contact resistance of the node in testing apparatus and the link circuit.
Existing high-current test anchor clamps mostly are " the hard connection ", promptly connect into a circle by two semicircles of casting in advance, and two semicircles can be opened, and one of them semicircle connects testing apparatus, and the another one semicircle is used for clamping tested female pipeline.This high-current test design of Clamping Apparatus diameter is consistent with the diameter of tested female pipeline.But because inevitable mismachining tolerance, the actual diameter of these high-current test anchor clamps is often inconsistent with the diameter of tested female pipeline.If tested female pipeline diameter is greater than high-current test anchor clamps actual diameter, two semicircles " separated " that will cause the high-current test anchor clamps, as shown in Figure 1, have only one (being lower half circle part 2 among Fig. 1) can effectively contact tested female pipeline in two semicircles, contact area reduces to mean that the contact resistance between high-current test anchor clamps and tested female pipe increases, its result works as the output power that measuring current one regularly will increase current output device, perhaps works as output power one and regularly must reduce measuring current.If tested female pipeline diameter is less than high-current test anchor clamps actual diameter, will cause two semicircles of high-current test anchor clamps can't " clamp " tested female pipeline, as shown in Figure 2, only upper semi-circle part 1 contacts with tested female pipeline, can make that so also the contact area of high-current test anchor clamps and tested female pipeline reduces, and then make the contact resistance between high-current test anchor clamps and tested female pipe increase.Under the situation that contact resistance increases, can only increase the device output power or reduce measuring current, and increase volume, the weight that the device output power will increase device, influence its dirigibility of testing at the scene and convenience; Reduce the then overall permanence of measuring current mutual inductor intactly of measuring current.
Summary of the invention
(1) technical matters that will solve
First technical matters to be solved in the utility model is: a kind of high-current test anchor clamps that can increase effectively with the contact area of tested female pipeline are provided.Second technical matters to be solved in the utility model is: the high-current test anchor clamps on a kind of tested female pipeline that can be applied in different-diameter are provided.
(2) technical scheme
In order to solve the problems of the technologies described above, the utility model provides a kind of high-current test anchor clamps, comprise: on, following metal fixing, last metal fixing comprises the upper semi-circle part and distinguishes outward extending first from two end points of upper semi-circle part, second extension, following metal fixing comprises following circular portion and distinguishes the outward extending the 3rd from two end points of lower half circle part, the 4th extension, first, second, the 3rd, be equipped with securing member on the 4th extension, securing member be used for, following metal fixing links together, on, the diameter of the semi-circular portions of following metal fixing is identical; And upper and lower metal flexible link, upper and lower metal flexible link is separately fixed on the inside surface of upper and lower metal fixing and in first, second, third, fourth extension and connects together.
Wherein, the diameter of the upper and lower semi-circular portions of upper and lower metal fixing is less than or equal to the diameter of tested female pipeline.
Wherein, the length of the 4th extension of following metal fixing one end is greater than the length of second extension of the last metal fixing of correspondence.
Wherein, be provided with two groups of securing members in the following side of the 4th long extension of metal fixing, the last metal flexible link between two groups of securing members can freely stretch.
Wherein, upper and lower metal fixing is a steel plate.
Wherein, upper and lower metal flexible link is that red copper row is flexible coupling.
Wherein, securing member is a screw, offers screw on first, second, third, fourth extension, and screw and screw are complementary.
Wherein, red copper is arranged to be flexible coupling and is formed by the compacting of multilayer copper foil scolding tin.
Wherein, be provided with the above screw of three rows, be used for upper and lower metal flexible link being connected together at diverse location in the 4th long extension of following metal fixing.
Wherein, the position that connects together at upper and lower metal flexible link is provided with pressing plate, and pressing plate is used to compress upper and lower metal flexible link.
(3) beneficial effect
By upper and lower metal flexible link being set and upper and lower metal flexible link being converged in tested female pipeline outside, can increase the contact area of high-current test anchor clamps and tested female pipeline, thereby reduce contact resistance; The diameter of the semi-circular portions by upper and lower metal fixing is set is less than or equal to the diameter of tested female pipeline, can make the high-current test anchor clamps fully clamp tested female pipeline; By one section last metal flexible link that can freely stretch is set, can make the high-current test fixture application on tested female pipeline of different-diameter.Because contact resistance reduces, high-current test anchor clamps of the present utility model can improve the carrying load ability of proving installation, have improved measuring accuracy and work efficiency.
Description of drawings
Fig. 1 is the structural representation of existing high-current test fixture application on the bigger tested female pipeline of diameter;
Fig. 2 is the structural representation of existing high-current test fixture application on the less tested female pipeline of diameter;
Fig. 3 is the high-current test anchor clamps decomposing schematic representation of the utility model embodiment;
Fig. 4 is the user mode reference diagram of high-current test anchor clamps shown in Figure 3;
Fig. 5 is the cut-open view of high-current test anchor clamps shown in Figure 4.
Wherein, 1: the upper semi-circle part; 2: the lower half circle part; 3: tested female pipeline; 4: go up metal fixing; 5: following metal fixing; 6: go up the metal flexible link; 7: following metal flexible link; 8: the first extensions; 9: the second extensions; 10: the three extensions; 11: the four extensions; 12: securing member; 13: pressing plate; Last metal flexible link between 14: two groups of securing members.
Embodiment
Below in conjunction with drawings and Examples, embodiment of the present utility model is described in further detail.Following examples are used to illustrate the utility model, but are not used for limiting scope of the present utility model.
As shown in Figure 3, the high-current test anchor clamps of present embodiment comprise: go up metal fixing 4, following metal fixing 5, last metal flexible link 6, following metal flexible link 7 and securing member 12.Last metal fixing 4 comprises the upper semi-circle part and distinguishes outward extending first, second extensions 8,9 from two end points of upper semi-circle part.Following metal fixing 5 comprises following circular portion and distinguishes outward extending the 3rd, the 4th extensions 10,11 from two end points of lower half circle part.
As shown in Figure 4 and Figure 5, upper and lower metal flexible link 6,7 is separately fixed on the inside surface of upper and lower metal fixing 4,5 and in first, second, third, fourth extension 8,9, and 10,11 connect together.Be equipped with securing member 12 on first, second extension 8,9 of last metal fixing 4 and the 3rd, the 4th extension 10,11 of following metal fixing 5, securing member 12 is used for upper and lower metal fixing 4,5 link together, and the diameter of the semi-circular portions of upper and lower metal fixing 4,5 is identical.The position that connects together at upper and lower metal flexible link 6,7 is provided with pressing plate 13, and pressing plate 13 is used to compress upper and lower metal flexible link 6,7.
In the present embodiment, the diameter of the semi-circular portions of upper and lower metal fixing 4,5 is less than the diameter of tested female pipeline 3.Though upper and lower metal fixing 4,5 semi-circular portions relative separation, but what contact with tested female pipeline 3 is upper and lower metal flexible link 6,7, upper and lower metal flexible link 6,7 connects together in the outside, carries out " confluxing ", therefore the high-current test anchor clamps of present embodiment both can clamp tested female pipeline 3, can guarantee effective contact area bigger between the two again.
In the present embodiment, the length of the 4th extension 11 of following metal fixing 5 one ends is greater than second extension 9 of the last metal fixing 4 of correspondence.The last metal flexible link 14 that is provided with between 12, two groups of securing members 12 of two groups of securing members in side of the 4th long extension 11 of descending metal fixing 5 can freely stretch, and promptly has one section last metal flexible link 6 to expose.Be provided with four row's screws in the 4th long extension 11 of following metal fixing 5, can stretch like this and go up the part that metal flexible link 6 exposes, thereby at diverse location with upper and lower metal flexible link 6,7 connect together, and are fixed on down on the 4th long extension 11 of metal fixing 5.Like this by upper and lower metal flexible link 6,7 being connected together on tested female pipeline 3 of high-current test fixture application at different-diameter that can make present embodiment at diverse location.
In the present embodiment, upper and lower metal fixing 4,5 is a steel plate.Upper and lower metal flexible link 6,7 is flexible coupling for red copper row, and red copper row is flexible coupling and is formed by the compacting of multilayer copper foil scolding tin.Securing member 12 is a screw, offers screw on first, second extension 8,9 of last metal fixing 4 and the 3rd, the 4th extension 10,11 of following metal fixing 5, and screw and screw are complementary.The main effect of upper and lower metal fixing 4,5 is to compress inboard red copper row to be flexible coupling, and red copper row is flexible coupling is close to tested female pipeline 3.The main effect that red copper row is flexible coupling is a conduction current, makes testing apparatus and the electric current exported is connected to clamped tested female pipeline 3.The main pressuring actions that rise of pressing plate 13 make the upper and lower metal flexible link 6,7,14 of " separated " converge at the junction electric current.Securing member 12 is used for fastening upper and lower metal fixing 4,5.
Certainly, in a further embodiment, upper and lower metal fixing 4,5 also can be made by other hard metal materials, and upper and lower metal flexible link 6,7 also can be made by other soft metal materials, as long as conduct electricity very well, and soft, can stretch gets final product.
High-current test anchor clamps of the present utility model are by being provided with upper and lower metal flexible link 6,7 and with upper and lower metal flexible link 6,7 converge in tested female pipeline 3 outsides, can increase the contact area of high-current test anchor clamps and tested female pipeline 3, thereby reduce contact resistance; The diameter of the semi-circular portions by upper and lower metal fixing 4,5 is set is less than or equal to the diameter of tested female pipeline 3, can make the high-current test anchor clamps fully clamp tested female pipeline 3; By one section last metal flexible link 6 that can freely stretch is set, can make the high-current test fixture application on tested female pipeline 3 of different-diameter.
High-current test anchor clamps of the present utility model are easy for installation, need not to customize the aluminum casting clip that is used to clamp tested female pipeline 3.High-current test anchor clamps contact of the present utility model is good, makes the output power of testing apparatus diminish, thereby can make the smaller volume of testing apparatus, moves at the scene of complexity and is convenient to on-the-spot test flexibly, and improved measuring accuracy.
The above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model know-why; can also make some improvement and replacement, these improvement and replacement also should be considered as protection domain of the present utility model.
Claims (10)
1. high-current test anchor clamps is characterized in that, comprising:
On, following metal fixing (4,5), described last metal fixing (4) comprises the upper semi-circle part and distinguishes outward extending first from two end points of described upper semi-circle part, second extension (8,9), described following metal fixing (5) comprises following circular portion and distinguishes the outward extending the 3rd from two end points of described lower half circle part, the 4th extension (10,11), described first, second, the 3rd, the 4th extension (8,9,10,11) be equipped with securing member (12) on, described securing member (12) is used for described, following metal fixing (4,5) link together, described on, the diameter of the described semi-circular portions of following metal fixing (4,5) is identical; And
Upper and lower metal flexible link (6,7), described upper and lower metal flexible link (6,7) be separately fixed on the inside surface of described upper and lower metal fixing (4,5) and in described first, second, third, fourth extension (8,9,10,11) connect together.
2. high-current test anchor clamps as claimed in claim 1 is characterized in that, the diameter of the described upper and lower semi-circular portions of described upper and lower metal fixing (4,5) is less than or equal to the diameter of tested female pipeline (3).
3. high-current test anchor clamps as claimed in claim 2 is characterized in that, the length of described described the 4th extension (11) of metal fixing (5) one ends down is greater than the described length that goes up described second extension (9) of metal fixing (4) of correspondence.
4. high-current test anchor clamps as claimed in claim 3, it is characterized in that, side of long described the 4th extension (11) at described metal fixing (5) down is provided with two groups of described securing members (12), and the last metal flexible link (14) between two groups of described securing members (12) can freely stretch.
5. as the described high-current test anchor clamps of one of claim 1 to 4, it is characterized in that described upper and lower metal fixing (4,5) is a steel plate.
6. as the described high-current test anchor clamps of one of claim 1 to 4, it is characterized in that described upper and lower metal flexible link (6,7) is flexible coupling for red copper row.
7. as the described high-current test anchor clamps of one of claim 1 to 4, it is characterized in that described securing member (12) is a screw, described first, second, third, fourth extension offers screw on (8,9,10,11), and described screw and described screw are complementary.
8. high-current test anchor clamps as claimed in claim 6 is characterized in that, described red copper row is flexible coupling and is formed by the compacting of multilayer copper foil scolding tin.
9. high-current test anchor clamps as claimed in claim 7, it is characterized in that, be provided with three the above screw of row in long described the 4th extension (11) of described metal fixing (5) down, be used for described upper and lower metal flexible link (6,7) being connected together at diverse location.
10. high-current test anchor clamps as claimed in claim 8 or 9, it is characterized in that, pressing plate (13) is set in the position that described upper and lower metal flexible link (6,7) connects together, described pressing plate (13) is used to compress described upper and lower metal flexible link (6,7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202505243U CN201765255U (en) | 2010-06-28 | 2010-06-28 | Heavy-current test clamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202505243U CN201765255U (en) | 2010-06-28 | 2010-06-28 | Heavy-current test clamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201765255U true CN201765255U (en) | 2011-03-16 |
Family
ID=43717863
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202505243U Expired - Lifetime CN201765255U (en) | 2010-06-28 | 2010-06-28 | Heavy-current test clamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201765255U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156215A (en) * | 2011-03-24 | 2011-08-17 | 深圳市瑞雷特电子技术有限公司 | Closed-loop electric test clamp |
| CN108627392A (en) * | 2018-07-05 | 2018-10-09 | 新兴铸管股份有限公司 | Finish rolling deformed bar stretches clamping device |
| CN113851864A (en) * | 2021-09-26 | 2021-12-28 | 国网辽宁省电力有限公司抚顺供电公司 | Tube bus flexible connection and hoop downlead node direct current resistance measuring device |
-
2010
- 2010-06-28 CN CN2010202505243U patent/CN201765255U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156215A (en) * | 2011-03-24 | 2011-08-17 | 深圳市瑞雷特电子技术有限公司 | Closed-loop electric test clamp |
| CN102156215B (en) * | 2011-03-24 | 2013-06-26 | 深圳市瑞雷特电子技术有限公司 | Closed-loop electric test clamp |
| CN108627392A (en) * | 2018-07-05 | 2018-10-09 | 新兴铸管股份有限公司 | Finish rolling deformed bar stretches clamping device |
| CN113851864A (en) * | 2021-09-26 | 2021-12-28 | 国网辽宁省电力有限公司抚顺供电公司 | Tube bus flexible connection and hoop downlead node direct current resistance measuring device |
| CN113851864B (en) * | 2021-09-26 | 2023-09-22 | 国网辽宁省电力有限公司抚顺供电公司 | Direct-current resistance measuring device for flexible connection of tubular bus and down-lead node of anchor ear |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201765255U (en) | Heavy-current test clamp | |
| CN201435576Y (en) | Tubular busbar terminal hardware fitting used for UHV (ultra-high voltage) substation | |
| CN104362444A (en) | Divided conductor clamp fitting for EHV (Extra-High Voltage) DC (Direct Current) convertor station and branch clamps thereof | |
| CN201708255U (en) | Break resistant copper-aluminum transition cable clamp | |
| CN202503116U (en) | Tubular bus joint | |
| CN202333678U (en) | Conductive device for supporting type tubular bus and earthed switch in high-voltage distribution | |
| CN201601234U (en) | Tubular bus-bar end joint | |
| CN202616432U (en) | Transitional crimping wire clamp for copper and aluminum wire | |
| CN201435464Y (en) | T-type wire clip, 4-bundle wire clip and 8-bundle wire clip used for UHV (ultra-high voltage) substation | |
| CN201000924Y (en) | Tubular bus conductor and bus conductor connecting structure | |
| CN203232975U (en) | Wiring clamp | |
| CN201699157U (en) | Electric connector | |
| CN101794938B (en) | Electric connector | |
| CN201307144Y (en) | Switch cabinet electrical test bench | |
| CN201397888Y (en) | Tube busbar tie jumper wire clamp | |
| CN210005601U (en) | asynchronous interconnection test system based on high-voltage direct-current transmission | |
| CN205646713U (en) | It stretches out and draws back to possess simultaneously meets support type tubular busbar mounting structure of function with T | |
| CN104577920A (en) | 800 kV convertor station direct-current field polar line smoothing reactor terminal connecting ironware | |
| CN211150486U (en) | Connecting device of fuse | |
| CN110895323A (en) | Portable mutual inductor test rod | |
| CN211530220U (en) | General type binding post | |
| CN209515585U (en) | A kind of conductor connecting structure of leakage circuit breakers | |
| CN204905547U (en) | Waterproof connector | |
| CN201126465Y (en) | Test stand for detecting transformer direct-coupled breaker character | |
| CN201435545Y (en) | Equipment cable clamp used for ultra-high voltage substation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: BEIJING PONOVO XINLI ELECTRIC CO., LTD. Free format text: FORMER NAME: BEIJING PONOVO XINLI POWER SYSTEM INSTRUMENT CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 100098 Beijing city Haidian District No. 48 Zhichun Road Yingdu building C block 4 unit two floor Patentee after: Beijing Ponovo Power Co., Ltd. Address before: 100098 Beijing city Haidian District No. 48 Zhichun Road Yingdu building C block 4 unit two floor Patentee before: Beijing Ponovo Power System Instrument Co.,Ltd. Address after: 100098 Beijing city Haidian District No. 48 Zhichun Road Yingdu building C block 4 unit two floor Patentee after: Beijing Ponovo Power Co., Ltd. Address before: 100098 Beijing city Haidian District No. 48 Zhichun Road Yingdu building C block 4 unit two floor Patentee before: Beijing Ponovo Power System Instrument Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20110316 |
|
| CX01 | Expiry of patent term |