CN218886141U - A equipment box for promoting mutual inductive test efficiency - Google Patents
A equipment box for promoting mutual inductive test efficiency Download PDFInfo
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- CN218886141U CN218886141U CN202223215758.6U CN202223215758U CN218886141U CN 218886141 U CN218886141 U CN 218886141U CN 202223215758 U CN202223215758 U CN 202223215758U CN 218886141 U CN218886141 U CN 218886141U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model discloses an equipment box for promoting mutual inductive test efficiency, including the metal box, the components and parts chamber is seted up to metal box top surface, components and parts chamber top surface grafting indicating panel, four stands of the perpendicular rigid coupling of components and parts chamber four corners department, stand contact indicating panel bottom surface four corners department, the screw hole is seted up to the stand top surface, four screw thread through-holes are seted up perpendicularly respectively to the indicating panel four corners department, screw hole and screw thread through-hole female connection stay bolt. The utility model discloses a current regulation knob can adjust the access electric current, is convenient for test under different current conditions, and then can directly test out current transformer's transformation ratio and polarity, need not the secondary wiring and tests polarity, and efficiency of software testing is higher to can take off instruction panel after demolising the stay bolt, the circuit passes through the main winding displacement and connects, extracts the winding displacement terminal and can separate metal box and instruction panel, and line connection is simple, the easy access.
Description
Technical Field
The utility model relates to a current transformer test technical field specifically is an equipment box for promoting mutual inductive test efficiency.
Background
The Current Transformer (CT) is an indispensable electrical component of a power transmission and supply system, and is also an important link in power system relay protection, and the performance of the current transformer can directly affect the stable operation of the power system and the correct action of the relay protection, so before the equipment is put into production and operated, after overhaul, and after the winding is replaced or the transformation ratio is replaced, the relevant current transformer must be strictly tested, the test mainly aims at the polarity and the transformation ratio of the current transformer, and the current main test method is as follows: the transformation ratio of the current transformer is measured by using a large current generator, then a dry battery is used for supplying power to a primary loop of the current transformer, a mechanical pointer meter is used for measuring a secondary winding of the transformer, and a polarity result of the transformer is obtained through the deflection condition of the pointer meter.
Because the large current generator can not change input current, consequently do not possess the function of test current transformer polarity, this just leads to on-the-spot tester to need reuse dry battery and mechanical type pointer table to carry out the polarity measurement to current transformer after using large current generator to measure the current transformer transformation ratio, needs the secondary wiring, and is very loaded down with trivial details, influences efficiency of software testing to the inside wiring of large current generator is complicated, and the dismouting of itself is overhauld also comparatively troublesome.
To this end we propose an assembly box for improving the efficiency of the test of mutual inductance to solve the above mentioned problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an equipment box for promoting mutual inductive test efficiency to solve the problem of proposing among the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: an assembly box body for improving mutual inductance test efficiency comprises a metal box body, wherein a component cavity is formed in the top surface of the metal box body, an indication panel is inserted into the top surface of the component cavity, four stand columns are vertically and fixedly connected to four corners of the component cavity, the stand columns are in contact with the four corners of the bottom surface of the indication panel, threaded holes are formed in the top surface of the stand columns, four threaded through holes are respectively vertically formed in the four corners of the indication panel, and long bolts are connected with the threaded holes and the threaded through holes in a threaded manner;
an expanding part is arranged on the surface of the indicating panel and positioned on the outer side of the top surface of the threaded through hole, the top end of the long bolt is inserted in the expanding part, four sides of the inner side wall of the metal box body are fixedly connected with four abutting plates respectively, and the abutting plates contact the edge of the bottom surface of the indicating panel;
the indicating panel is characterized in that a main flat cable is fixedly connected to the bottom surface of one side of the indicating panel, the end part of the main flat cable is fixedly connected with a flat cable terminal, the bottom surface of the component cavity is fixedly connected with a flat cable end groove, the flat cable terminal is connected with the flat cable end groove in an inserting mode and is electrically connected with the flat cable end groove, the top surface of the indicating panel is connected with a current adjusting knob in a rotating mode, the bottom surface of the indicating panel is fixedly connected with an auto-coupling voltage regulator, an output shaft of the current adjusting knob is fixedly connected with an input shaft of the auto-coupling voltage regulator, a component cavity is fixedly connected with a current rising device, and the current rising device is connected with the auto-coupling voltage regulator in a series mode.
Preferably, the surface of the indication panel is fixedly connected with a display screen, a power interface, a switch, three buttons and two input binding posts, the surface of the indication panel is provided with two current input ports and a grounding post, and the grounding post is electrically connected with the metal box body.
Preferably, an external thread is not formed in the upper portion of the input binding post in a measuring mode, a compression nut is sleeved on the external thread in a threaded mode, and the top face of the power interface is rotatably connected with a dust cover.
Preferably, the component cavity is fixedly connected with a control circuit, a measurement circuit, an overcurrent protection circuit and a data processing module, and a plurality of sub-flat cables are electrically connected among the flat cable end groove, the control circuit, the measurement circuit, the overcurrent protection circuit and the data processing module.
Preferably, component chamber bottom surface rigid coupling single-phase circuit breaker, instruction panel bottom surface rigid coupling live wire, live wire tip rigid coupling end, single-phase circuit breaker is pegged graft and the electricity is connected to the end, component chamber bottom surface rigid coupling current rising ware and fuse, power source is connected to the live wire electricity, the fuse is connected to single-phase circuit breaker electricity, fuse electrical connection switch.
Preferably, the top surface of the metal box body is rotatably connected with the box cover through a hinge, one side of the box cover is fixedly connected with a female buckle, one side of the metal box body is fixedly connected with a male buckle, and the female buckle is clamped with the male buckle.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a current regulation knob can adjust the access electric current, is convenient for test under different current conditions, and then can directly test out current transformer's transformation ratio and polarity, need not the secondary wiring and tests the polarity, and efficiency of software testing is higher to can take off instruction panel after demolising the stay bolt, the circuit passes through main winding displacement and connects, extracts the winding displacement terminal and can separate metal box and instruction panel, and line connection is simple, the easy access.
Drawings
FIG. 1 is a schematic view of the main structure of the first and second embodiments of the present invention;
FIG. 2 is a schematic view of the explosion structure of the metal case according to the first and second embodiments of the present invention;
FIG. 3 is a schematic view of the bottom structure of the indicating panel according to the first and second embodiments of the present invention;
fig. 4 is a schematic diagram of an explosion structure after the metal box is removed according to a second embodiment of the present invention.
In the figure: 1. a metal case; 2. an indication panel; 3. a component cavity; 11. a hinge; 12. a box cover; 13. a female buckle; 14. a sub-buckle; 21. a threaded through hole; 22. a long bolt; 23. a flared part; 24. a current adjusting knob; 25. a display screen; 26. a current input port; 27. inputting a binding post; 28. an external thread; 29. a compression nut; 210. a live line; 211. a tip; 212. a main flat cable; 213. a flat cable terminal; 214. a power interface; 215. a dust cover; 216. a switch; 217. a ground post; 218. a button; 219. an auto-coupling voltage regulator; 31. a column; 32. a threaded hole; 33. a resisting plate; 34. a control circuit; 35. a measurement circuit; 36. an overcurrent protection circuit; 37. a data processing module; 38. a single-phase circuit breaker; 39. a current riser; 310. a fuse; 311. sub-flat cables; 312. a flat cable end slot.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1:
referring to fig. 1-3, the present invention provides a technical solution: an assembly box body for improving mutual inductance test efficiency comprises a metal box body 1, wherein a component cavity 3 is formed in the top surface of the metal box body 1, an indication panel 2 is inserted into the top surface of the component cavity 3, four vertical columns 31 are vertically and fixedly connected to four corners of the component cavity 3, the vertical columns 31 are in contact with four corners of the bottom surface of the indication panel 2, threaded holes 32 are formed in the top surface of each vertical column 31, four threaded through holes 21 are respectively vertically formed in four corners of the indication panel 2, and long bolts 22 are connected with the threaded holes 32 and the threaded through holes 21 in a threaded manner;
an expanding part 23 is arranged on the outer side of the top surface of the threaded through hole 21 on the surface of the indicating panel 2, the top end of the long bolt 22 is inserted in the expanding part 23, four sides of the inner side wall of the metal box body 1 are fixedly connected with four abutting plates 33 respectively, and the abutting plates 33 contact the edge of the bottom surface of the indicating panel 2;
the bottom surface of one side of the indication panel 2 is fixedly connected with a main flat cable 212, the end part of the main flat cable 212 is fixedly connected with a flat cable terminal 213, the bottom surface of the component cavity 3 is fixedly connected with a flat cable end groove 312, the flat cable terminal 213 is inserted and electrically connected with the flat cable end groove 312, the top surface of the indication panel 2 is rotatably connected with a current adjusting knob 24, the bottom surface of the indication panel 2 is fixedly connected with an auto voltage regulator 219, an output shaft of the current adjusting knob 24 is fixedly connected with an input shaft of the auto voltage regulator 219, a current booster 39 is fixedly connected in the component cavity 3, the current booster 39 is connected with the auto voltage regulator 219 in series, the current can be adjusted by the current adjusting knob 24, the test can be carried out under different current conditions, the transformation ratio and the polarity of the current transformer can be directly tested, the polarity can be tested without secondary wiring, the test efficiency is higher, the indication panel 2 can be taken down after the long bolt 22 is removed, the circuit is connected through the main flat cable 212, the metal box body 1 and the indication panel 2 can be separated by pulling out of the flat cable terminal 213, the flat cable terminal, the circuit connection is simple, and the overhaul is convenient.
Example 2:
referring to fig. 1-4, for the second embodiment of the present invention, the surface of the indication panel 2 is fixedly connected to the display screen 25, the power source interface 214, the switch 216, the three buttons 218 and the two input terminals 27, the surface of the indication panel 2 is provided with two current input ports 26 and a grounding pillar 217, the grounding pillar 217 is electrically connected to the metal box 1, and the display screen 25 is used for displaying the current and the transformation ratio testing parameters.
The upper part of the input binding post 27 is not provided with an external thread 28, the external thread 28 is in threaded sleeve connection with a gland nut 29, and the top surface of the power interface 214 is rotatably connected with a dust cover 215.
A control circuit 34, a measuring circuit 35, an overcurrent protection circuit 36 and a data processing module 37 are fixedly connected in the component cavity 3, a plurality of sub-flat cables 311 are electrically connected among the flat cable end groove 312, the control circuit 34, the measuring circuit 35, the overcurrent protection circuit 36 and the data processing module 37, the measuring circuit 35 mainly comprises a precision 0.01-grade precision mutual inductor, collected data form a good electrical path by adopting an optoelectronic transmission technology through an inlet amplifying circuit, a measuring result is transmitted to the data processing module 37, the data processing module 37 realizes a digital real-time collecting technology by using a 16-bit single chip microcomputer, a voltage value at a high-voltage side is calculated according to a voltage proportional relation by measuring a voltage signal amplitude, a calculating result is displayed on a display screen 25, and then the polarity and the transformation ratio of the current mutual inductor are tested.
The bottom surface of the component cavity 3 is fixedly connected with a single-phase breaker 38, the bottom surface of the indication panel 2 is fixedly connected with a live wire 210, the end part of the live wire 210 is fixedly connected with an end 211, the end 211 is connected with the single-phase breaker 38 in an inserting and electric mode, the bottom surface of the component cavity 3 is fixedly connected with a current booster 39 and a fuse 310, the live wire 210 is electrically connected with a power interface 214, the single-phase breaker 38 is electrically connected with the fuse 310, and the fuse 310 is electrically connected with the switch 216.
One side of the top surface of the metal box body 1 is rotatably connected with a box cover 12 through a hinge 11, one side of the box cover 12 is fixedly connected with a female buckle 13, one side of the metal box body 1 is fixedly connected with a male buckle 14, and the female buckle 13 is clamped with the male buckle 14.
Example 3:
please refer to fig. 1-4, for the utility model discloses the third embodiment, this embodiment is based on two above-mentioned embodiments, the utility model discloses during the use, with power access power interface 214 on, connect current supply unit on two current input ports 26, insert the current transformer line again to input terminal 27 on, adjust input current through current regulation knob 24, and then through measuring voltage signal amplitude, according to the voltage proportional relation, calculate high-voltage side voltage value, show the result of calculation on display screen 25, finally test out current transformer's transformation ratio and polarity, the utility model discloses a current regulation knob 24 can adjust access current, be convenient for test under different current conditions, and then can directly test out current transformer's transformation ratio and polarity, need not the secondary wiring and test polarity, efficiency is higher to can take off instruction panel 2 after dismantling long bolt 22, the circuit passes through main winding displacement 212 and connects, extracts winding displacement terminal 213 and can separate metal box 1 and instruction panel 2, and the line connection is simple, the easy access.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides an equipment box for promoting mutual inductive test efficiency, includes metal box (1), its characterized in that:
a component cavity (3) is formed in the top surface of the metal box body (1), an indication panel (2) is inserted into the top surface of the component cavity (3), four upright posts (31) are fixedly connected to four corners of the component cavity (3) vertically, the upright posts (31) are in contact with four corners of the bottom surface of the indication panel (2), threaded holes (32) are formed in the top surface of each upright post (31), four threaded through holes (21) are formed in four corners of the indication panel (2) vertically, and the threaded holes (32) and the threaded through holes (21) are connected with long bolts (22) through internal threads;
the surface of the indicating panel (2) is provided with an expanding part (23) at the outer side of the top surface of the threaded through hole (21), the top end of the long bolt (22) is inserted into the expanding part (23), four sides of the inner side wall of the metal box body (1) are fixedly connected with four abutting plates (33) respectively, and the abutting plates (33) contact the edge of the bottom surface of the indicating panel (2);
indicate panel (2) one side bottom surface rigid coupling main winding displacement (212), main winding displacement (212) tip rigid coupling winding displacement terminal (213), components and parts chamber (3) bottom surface rigid coupling winding displacement end slot (312), winding displacement terminal (213) are pegged graft and are connected winding displacement end slot (312) electrically, indicate panel (2) top surface rotation and connect electric current adjust knob (24), indicate panel (2) bottom surface rigid coupling auto voltage regulator (219), electric current adjust knob (24) output shaft rigid coupling auto voltage regulator (219) input shaft, the rigid coupling rises and flows ware (39) in components and parts chamber (3), it connects auto voltage regulator (219) to rise and flow ware (39).
2. The assembly box body for improving the test efficiency of mutual inductance according to claim 1, characterized in that: the surface of the indication panel (2) is fixedly connected with a display screen (25), a power interface (214), a switch (216), three buttons (218) and two input binding posts (27), the surface of the indication panel (2) is provided with two current input ports (26) and a grounding post (217), and the grounding post (217) is electrically connected with the metal box body (1).
3. The assembly box body for improving the test efficiency of mutual inductance according to claim 2, characterized in that: an external thread (28) is not measured on the upper portion of the input binding post (27), a compression nut (29) is sleeved on the external thread (28) in a threaded mode, and the top face of the power interface (214) is rotatably connected with a dust cover (215).
4. The assembly box body for improving the test efficiency of mutual inductance according to claim 1, characterized in that: the component cavity (3) is fixedly connected with a control circuit (34), a measuring circuit (35), an overcurrent protection circuit (36) and a data processing module (37), and a plurality of sub-flat cables (311) are electrically connected among the flat cable end grooves (312), the control circuit (34), the measuring circuit (35), the overcurrent protection circuit (36) and the data processing module (37).
5. The assembly box body for improving the test efficiency of mutual inductance according to claim 2, characterized in that: the single-phase circuit breaker (38) of components and parts chamber (3) bottom surface rigid coupling, indicate panel (2) bottom surface rigid coupling live wire (210), live wire (210) tip rigid coupling end (211), single-phase circuit breaker (38) is pegged graft and is connected electrically in end (211), components and parts chamber (3) bottom surface rigid coupling current rising ware (39) and fuse (310), live wire (210) electricity connection power source (214), fuse (310) are connected to single-phase circuit breaker (38) electricity, fuse (310) electricity connect switch (216).
6. The assembly box body for improving the test efficiency of mutual inductance according to claim 1, characterized in that: the box cover is rotatably connected to one side of the top face of the metal box body (1) through a hinge (11), a female buckle (13) is fixedly connected to one side of the box cover (12), a sub-buckle (14) is fixedly connected to one side of the metal box body (1), and the sub-buckle (14) is clamped to the female buckle (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223215758.6U CN218886141U (en) | 2022-12-01 | 2022-12-01 | A equipment box for promoting mutual inductive test efficiency |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223215758.6U CN218886141U (en) | 2022-12-01 | 2022-12-01 | A equipment box for promoting mutual inductive test efficiency |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218886141U true CN218886141U (en) | 2023-04-18 |
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ID=85950383
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223215758.6U Active CN218886141U (en) | 2022-12-01 | 2022-12-01 | A equipment box for promoting mutual inductive test efficiency |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218886141U (en) |
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2022
- 2022-12-01 CN CN202223215758.6U patent/CN218886141U/en active Active
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