CN102680934A - Current reversing device for current sensor tests - Google Patents
Current reversing device for current sensor tests Download PDFInfo
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- CN102680934A CN102680934A CN2012101759621A CN201210175962A CN102680934A CN 102680934 A CN102680934 A CN 102680934A CN 2012101759621 A CN2012101759621 A CN 2012101759621A CN 201210175962 A CN201210175962 A CN 201210175962A CN 102680934 A CN102680934 A CN 102680934A
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- removable switch
- removable
- switch
- current sensor
- electric current
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Abstract
A current reversing device for current sensor tests comprises a current inlet-outlet end, a current sensor test end and four movable switches. A first end of the current inlet-outlet end is opposite to one end of a first movable switch, the other end of the first movable switch is opposite to a first end of the current sensor test end, the first end of the current inlet-outlet end is further connected with one end of the second movable switch, the other end of the second movable switch is connected with a second end of the current sensor test end, a second end of the current inlet-outlet end is opposite to one end of a third movable switch, the other end of the third movable switch is opposite to the second end of the current sensor test end, the second end of the current inlet-outlet end is further connected with one end of a fourth movable switch, and the other end of the fourth movable switch is concerted with the first end of the current sensor test end. The first movable switch and the fourth movable switch are synchronous, the second movable switch and the third movable switch are synchronous, and the first movable switch and the fourth movable switch are in linkage with the second movable switch and the third movable switch.
Description
Technical field
The present invention relates to the current sensor proving installation, particularly the electric current reversing arrangement of its test usefulness.
Background technology
In the debugging of current sensor, factory inspection process, after the forward current test is accomplished, need carry out the inverse current test, current sensor is tested each time all needs the conversion direction of current.
Fig. 1 is the test loop of existing current sensor, at the output terminal of current source, connects fixing current sensor to be tested, begins test, and at this moment, measuring current flows through current sensor to be tested by A to B, and promptly A end "+" B end "-" is also claimed positive test; After positive test is accomplished, with manual way tested current sensor is commutated, connect fixing current sensor to be tested, begin test, at this moment, measuring current flows through current sensor to be tested by B to A, and promptly B end "+" A end "-" is also claimed negative testing.
When existing current sensor was tested, the electric current switching-over was cumbersome, carried out the electric current switching-over with manual method; Be screwed busbar and tested current sensor on proving installation earlier; After the forward current test is accomplished, unclamp the gib screw at test busbar two ends, busbar and tested current sensor conversion direction; After will test the busbar two ends and connect fasteningly with screw, carry out the test of inverse current again.Disadvantages such as it is big take place to connect the unreliable contact resistance that causes sometimes, causes test to be done over again etc., has the inefficiency of debugging, test, and labor intensity of operating personnel is big.
Summary of the invention
Technical matters to be solved by this invention is to overcome the above-mentioned deficiency of prior art and provide the test of a kind of current sensor use the electric current reversing arrangement, and its electric current that can carry out current transformer is automatically commutated.
The present invention solves the problems of the technologies described above the technical scheme that is adopted:
The electric current reversing arrangement is used in the current sensor test; Comprise electric current in-out end, current sensor test lead and four removable switches; One end of electric current in-out end is relative with an end of the first removable switch, and an end of the other end of the first removable switch and current sensor test lead is relative, and an end of electric current in-out end also joins with an end of the second removable switch; The other end of the other end of the second removable switch and current sensor test lead joins; One end of the other end of electric current in-out end and the 3rd removable switch is relative, and the other end of the other end of the 3rd removable switch and current sensor test lead is relative, and the other end of electric current in-out end also joins with an end of the 4th removable switch; One end of the other end of the 4th removable switch and current sensor test lead joins; The first removable switch and the 4th removable switch are synchronous, and the second removable switch and the 3rd removable switch are synchronous, the first removable switch, the 4th removable switch and the second removable switch, the 3rd removable switch gearing; Promptly the first removable switch, when the 4th removable switch breaks off, the second removable switch, the 3rd removable switch close; The first removable switch, when the 4th removable switch closes, the second removable switch, the 3rd removable switch break off.
During the measuring current sensor, as long as current sensor is placed between current sensor test lead two ends, just can detect in the energising of electric current in-out end, a directional current detects and finishes, and carries out the detection after electric current commutates again through operating removable switch.
The invention has the advantages that: can manual work carry out the electric current switching-over and automatic measuring current sensor, so convenient test, quick.
Description of drawings
Fig. 1 is the test philosophy figure of existing current sensor.
Fig. 2 is the schematic diagram of embodiment of the invention current sensor proving installation.
Fig. 3 is the schematic diagram of another state of embodiment of the invention current sensor proving installation.
Fig. 4 is the structural representation of the removable switch of embodiment of the invention current sensor proving installation.
Fig. 5 is the stereographic map of embodiment of the invention current sensor proving installation.
Fig. 6 is the stereographic map of the other direction of embodiment of the invention current sensor proving installation.
Fig. 7 is the main part part-structure synoptic diagram of embodiment of the invention current sensor proving installation.
Fig. 8 is the removable switch gas circuit control principle figure of embodiment of the invention current sensor proving installation.
Embodiment
Embodiment further describes the present invention below in conjunction with accompanying drawing.
As shown in Figure 2; The current sensor test is as shown in Figure 2 with the principle of work of electric current reversing arrangement electric current reversing arrangement; Comprise the removable K switch of electric current in-out end, current sensor test lead and four 1, K2, K3, K4; One end 11 of electric current in-out end is relative with an end of the first removable K switch 1; One end 51 of the other end of the first removable K switch 1 and current sensor test lead is relative, and an end 11 of electric current in-out end also joins with an end of the second removable K switch 2, and the other end 52 of the other end of the second removable K switch 2 and current sensor test lead joins; One end of the other end 12 of electric current in-out end and the 3rd removable K switch 3 is relative; The other end 52 of the other end of the 3rd removable K switch 3 and current sensor test lead is relative, and the other end 12 of electric current in-out end also joins with an end of the 4th removable K switch 4, and an end 11 of the other end of the 4th removable switch and current sensor test lead joins; The first removable K switch 1 and the 4th removable K switch 4 are synchronous, and the second removable K switch 2 and the 3rd removable K switch 3 are synchronous.
Above-mentioned first removable K switch the 1, the 3rd removable K switch 3 and second removable K switch the 2, the 4th removable K switch 4 interlocks; Duty 1 in Fig. 2; First removable K switch the 1, the 3rd removable K switch 3 is broken off; And second removable K switch the 2, the 4th removable K switch 4 is communicated with, and the A end of then tested sensor C is "-", and the B end is "+"; In Fig. 3, first removable K switch the 1, the 3rd removable K switch 3 is communicated with, and second removable K switch the 2, the 4th removable K switch 4 is broken off; Then the A of tested sensor end is "+"; The B end through the switching of K1, K4 and K 2, K 3 states, reaches the purpose of electric current switching-over for "-".
Above-mentioned four removable switch practical implementation structures are: each removable switch all is arranged to the cylinder way of propelling; With the first removable switch is example; Concrete structure is seen Fig. 4, comprises cylinder 211, busbar 212, collets 213, and busbar 212 is fixed through the collets 213 and the piston rod of cylinder 211; Busbar 212 moves with the piston rod of cylinder 211, thereby confirms itself and being connected or disengaging of miscellaneous part.
For contact better, contact block 214 is set above the busbar 212, easy like this have the excellent contact face with miscellaneous part such as electric current in-out end.
According to the situation of current sensor product, the surface of contact area of the area of section of the busbar of use and contact block can change, as long as the current-carrying area when guaranteeing work reaches requirement.
Above-mentioned electric current in-out end 11,12,51,52 and four removable switches 21 of current sensor test lead are fixed on the framework 4, and 25 three-way electromagnetic valves 7 removable switch 21 of control that links to each other with the cylinder of four removable switches 21 moves, and sees Fig. 5, Fig. 6, Fig. 7.
The switching of above-mentioned K1, K4 and K 2, K 3 states is operated through gas circuit and is realized, its concrete principle is seen Fig. 8.
Gas 9 connects part 8 through gas three and enters into solenoid valve 7, solenoid valve 7 control K1, K4 and K 2, K 3.
Operation valve 7 adopts 25 three-way electromagnetic valves, and 25 three-way electromagnetic valve principle of work: P are air intake openings, connect source of the gas.A, B are the gas outlets, are connected on the place of use, and R, S are exhausr ports, take over filter, and A is normal opening, give vent to anger from the A mouth once ventilating exactly.
Above-mentioned first, second, third and fourth removable switch is by two solenoid control, and solenoid valve adopts 25 three-way electromagnetic valves, and P is an air intake opening; Connect source of the gas, A, B are the gas outlets, are connected on the place of use; R, S are exhausr ports; A is normal opening, communicates with the rod chamber of K1, K3, and the B mouth communicates with the rodless cavity of K1, K3; The A mouth of another solenoid valve communicates with the rodless cavity of K2, K4, and the B mouth communicates with the rod chamber of K2, K4.
Among Fig. 8, K1, K3 are at extending position, and K2, K4 are at punctured bit.After solenoid valve 7 received opening signal, K1, K3 were at punctured bit, and K2, K4 are at extending position.
Above-mentioned electric current in-out end 11,12 also is provided with working cylinder 3, and the grasping part of working cylinder 3 and 11 formation current sensors of electric current in-out end is clamped current sensor through this space, like this can clamping current sensor C measures through working cylinder 3.
Among Fig. 6, electric current in-out end and test lead are back turnover, Pretesting, and such design is both economical, and test loop is shorter.Yet,, can design in-out end, test lead arbitrarily by the direction of actual needs according to the needs of application scenario.
Claims (5)
1. the electric current reversing arrangement is used in the current sensor test; It is characterized in that: comprise electric current in-out end, current sensor test lead and four removable switches; One end of electric current in-out end is relative with an end of the first removable switch; One end of the other end of the first removable switch and current sensor test lead is relative; One end of electric current in-out end also joins with an end of the second removable switch, and the other end of the other end of the second removable switch and current sensor test lead joins, and an end of the other end of electric current in-out end and the 3rd removable switch is relative; The other end of the other end of the 3rd removable switch and current sensor test lead is relative; The other end of electric current in-out end also joins with an end of the 4th removable switch, and an end of the other end of the 4th removable switch and current sensor test lead joins, and the first removable switch and the 4th removable switch are synchronous; The second removable switch and the 3rd removable switch are synchronous, the first removable switch, the 4th removable switch and the second removable switch, the 3rd removable switch gearing.
2. the electric current reversing arrangement is used in current sensor test as claimed in claim 1; It is characterized in that: said first, second, third and fourth removable switch is same structure; It comprises cylinder, busbar, collets; Busbar is fixed through the piston rod of collets and cylinder, and busbar moves with the piston rod of cylinder.
3. the electric current reversing arrangement is used in current sensor test as claimed in claim 2, it is characterized in that: above the said busbar contact block is set.
4. use the electric current reversing arrangement like claim 2 or 3 described current sensor tests, it is characterized in that: said first, second, third and fourth removable switch is by two solenoid control, and solenoid valve adopts 25 three-way electromagnetic valves; P is an air intake opening, connects source of the gas, and A, B are the gas outlets; R, S are exhausr ports; A is normal opening, communicates with the rod chamber of the first removable switch, the 3rd removable switch, and the B mouth communicates with the rodless cavity of the first removable switch, the 3rd removable switch; The A mouth of another solenoid valve communicates with the rodless cavity of the second removable switch, the 4th removable switch, and the B mouth communicates with the rod chamber of the second removable switch, the 4th removable switch.
5. the electric current reversing arrangement is used in current sensor test as claimed in claim 1; It is characterized in that: said electric current in-out end also is provided with working cylinder; Form the grasping part of current sensor between working cylinder and electric current in-out end, clamp current sensor through this space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101759621A CN102680934A (en) | 2012-05-31 | 2012-05-31 | Current reversing device for current sensor tests |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101759621A CN102680934A (en) | 2012-05-31 | 2012-05-31 | Current reversing device for current sensor tests |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102680934A true CN102680934A (en) | 2012-09-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101759621A Pending CN102680934A (en) | 2012-05-31 | 2012-05-31 | Current reversing device for current sensor tests |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4410926A (en) * | 1980-10-02 | 1983-10-18 | Flowtec Ag | Arrangement for generating DC magnetic fields of alternating polarity for the magnetic-inductive flow measurement |
| CN2817206Y (en) * | 2005-07-15 | 2006-09-13 | 储云跃 | Circuit device of electric tool with current commutator |
| CN101814716A (en) * | 2010-03-31 | 2010-08-25 | 银川英奥特自控有限公司 | Current signal detecting switch and valve control and fault protection device |
| CN101996787A (en) * | 2010-10-11 | 2011-03-30 | 西安美泰电气科技有限公司 | High-pressure pneumatic switch |
| CN102104373A (en) * | 2009-12-17 | 2011-06-22 | 英华达（上海）科技有限公司 | Voice-operated automatic boot device and method thereof |
-
2012
- 2012-05-31 CN CN2012101759621A patent/CN102680934A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4410926A (en) * | 1980-10-02 | 1983-10-18 | Flowtec Ag | Arrangement for generating DC magnetic fields of alternating polarity for the magnetic-inductive flow measurement |
| CN2817206Y (en) * | 2005-07-15 | 2006-09-13 | 储云跃 | Circuit device of electric tool with current commutator |
| CN102104373A (en) * | 2009-12-17 | 2011-06-22 | 英华达（上海）科技有限公司 | Voice-operated automatic boot device and method thereof |
| CN101814716A (en) * | 2010-03-31 | 2010-08-25 | 银川英奥特自控有限公司 | Current signal detecting switch and valve control and fault protection device |
| CN101996787A (en) * | 2010-10-11 | 2011-03-30 | 西安美泰电气科技有限公司 | High-pressure pneumatic switch |
Non-Patent Citations (2)
| Title |
|---|
| 李磊: "开关阀气缸位置伺服系统及其控制策略研究", 《2007机械工程全国博士生学术论坛》 * |
| 袁胜发: "磁性可变行程气缸的研究", 《液压与气动》 * |
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Application publication date: 20120919 |