Background technique
Intelligent high-pressure mutual inductor is that big voltage is converted into small voltage into 220kv electric system suitable for 1kv or is incited somebody to action
High current is converted into low current in order to the mutual inductor for measuring, protecting, use.
Existing Intelligent high-pressure mutual inductor is mostly induction mutual inductor, and working principle is identical as transformer, basic to tie
Structure is also iron core and former and deputy winding.The main function of Intelligent high-pressure mutual inductor is as follows: high voltage being converted into low-voltage, greatly
Electric current is converted into low current, hereafter again for measurement, control, protection.Measuring instrumentss can be not only increased in this way from journey, be convenient for instrument
Table standardization, reduces the voltage and current of control, protection equipment, and separates instrument with equipment or high-tension circuit, guarantees instrument
Table, equipment and the safety of staff.
The mounting means of existing Intelligent high-pressure mutual inductor is mostly fixed using flange installation or uses bonding mode solid
Calmly, installation site generally requires reserved, so that the application of Intelligent high-pressure mutual inductor is by more limitation.
Summary of the invention
The object of the present invention is to provide it is a kind of be easily installed and positioned, the Intelligent high-pressure mutual inductance with preferable firmness
Device.
Realizing the technical solution of the object of the invention is: a kind of Intelligent high-pressure mutual inductor, including a core pipe, a voltage
Mutual inductor, two pressure rings and two casing pressure claw assemblies;Two groups of pilot holes, each group pilot hole and a casing pressure are equipped on core pipe tube wall side by side
Claw assembly adaptation;Each group pilot hole includes three radially-directed holes;Each casing pressure claw assembly includes three claws;Each claw is equipped with pressure
Plate portion, guide runner portion and driver plate portion;Each pressing plate portion is located in core pipe lumen, three pressing plate portions in each casing pressure claw assembly
Clamping forms a clamp hole;Core pipe tube wall is stretched out in the outer end in the guide runner portion of claw, and each driver plate portion is located at core pipe tube wall
Outside;Each claw reciprocatingly slides along a corresponding radially-directed hole;Each pressure ring is rotatably arranged on the periphery wall of core pipe, each pressure ring
A side and corresponding a set of claw component in guide runner portion slide adjoining;The end wall of each pressure ring and the adjoining of guide runner portion
It is equipped with three helicla flutes, three driver plate portions adaptation of three helicla flutes respectively and in corresponding a set of claw component;Each pressure
The driver plate portion of pawl is located in a corresponding helicla flute;Voltage transformer includes annular matrix, and clamp hole is located at annular matrix hole
In chamber;Core pipe periphery wall is equipped with the annular block machine of evagination;Two pressure rings are rotatably arranged on the periphery wall of core pipe, and ring of living apart
The two sides of shape block machine;A side and annular block machine sliding adjoining of each pressure ring far from claw guiding guide runner portion;Each pressure ring
Internal perisporium is the smooth inner wall adjacent with the sliding of core pipe periphery wall;The periphery wall of each pressure ring is equipped with multiple binding grooves;Each group is led
Three radially-directed holes into hole are circumferentially evenly distributed on core pipe tube wall along core pipe, and each radially-directed hole is radially passed through along core pipe
Punching tube wall;Each radially-directed hole forms a notch for being located at core pipe edge;It is pushed when each pressure ring rotates by helicla flute
The driver plate portion of a corresponding claw, and then the pressing plate portion in corresponding a set of claw component is pushed to slide towards core pipe center.
The present invention has the effect of positive: (1) Intelligent high-pressure mutual inductor of the invention is since included press claw type locks machine
Structure does not need reserved installation position, is easily installed.(2) present invention drives claw to clamp electric power cable by helicla flute, and passes through biography
The bolt assembly of system clamps electric power cable and compares, and has excellent anti-loosening effect, the reliable and stable of long-term work is effectively ensured
Property.(3) present invention is arranged at core pipe center by the way that cable is clamped, and gravity centre distribution is relatively reasonable, when aerial for high-altitude
When on power circuit, be conducive to mitigate vibration.(4) present invention is clamped on same cable using two casing pressure claw assemblies, is had double
The effect of insurance, even if wherein a set of go wrong in use, there are also another set of its working performances of guarantee.
Specific embodiment
(embodiment 1)
The present embodiment is a kind of Intelligent high-pressure mutual inductor, as shown in Fig. 1 to Fig. 5, including 2, voltages of a core pipe
8, two pressure rings 1 of mutual inductor and two casing pressure claw assemblies 3.
Core pipe periphery wall is equipped with the annular block machine 21 of evagination;It is equipped with two groups of pilot holes on core pipe tube wall side by side along axial direction,
Each group pilot hole and a set of claw component adaptation;Each group pilot hole includes three radially-directed holes 23, three radially-directed holes
It is circumferentially evenly distributed on core pipe tube wall along core pipe;In the present embodiment, each radially-directed hole extends radially through core pipe tube wall along core pipe.
Each radially-directed hole 23 includes the guiding slide opening 231 and anticreep slide opening 232 axially set gradually along core pipe;Guiding is slided
The edge of core pipe two side ends is arranged in hole, and anticreep slide opening is connected to guiding slide opening;The radial cross-sectional shape in each radially-directed hole
It is T-shaped;Each radially-directed hole 23 forms a notch for being located at core pipe edge.
Each casing pressure claw assembly includes three claws 5;Each claw is equipped with pressing plate portion 51, slides along the guiding that core pipe radially extends
Block portion 52 and the driver plate portion 53 being arranged in guide runner portion;The driver plate portion of each claw is arranged in each guide runner portion
On the protrusive board axially projecting along core pipe, the outboard end of the protrusive board is equipped with chisel teeth 54.
Each pressing plate portion is respectively positioned in core pipe lumen, and core pipe tube wall is stretched out in the outer end in the guide runner portion of each claw, each to be driven
Plate portion is located on the outside of core pipe tube wall;Each guide runner portion 52 includes guide part 521 and anti-delinking part 522, and guide part is located at corresponding one
In the guiding slide opening in a radially-directed hole, anti-delinking part is located in the anticreep slide opening in a corresponding radially-directed hole;Guide part and anti-
The radial cross-sectional shape in de- portion is T-shaped with radially-directed hole adaptation.Each claw is made in the limit in radially-directed hole and guiding
Under, radially reciprocatingly slide along core pipe;The inner wall in each pressing plate portion is equipped with arc groove 55, three claws in each casing pressure claw assembly
Arc groove is enclosed a clamp hole 61 for clamping connection electric power cable.
Two pressure rings 1 are rotatably arranged on the periphery wall of core pipe, and the two sides for annular block machine of living apart;The internal perisporium of each pressure ring
It is the smooth inner wall adjacent with the sliding of core pipe periphery wall;The periphery wall of each pressure ring is equipped with multiple binding grooves 11;The one of each pressure ring
Adjoining is slided with the guide runner portion in corresponding a set of claw component in side and annular block machine sliding adjoining, another side;This reality
It applies in example, end wall each pressure ring and that guide runner portion is adjacent is equipped with three helicla flutes 12, three helicla flutes and corresponding one
Three driver plate portions adaptation in casing pressure claw assembly.
In the present embodiment, each helicla flute includes the anticreep area 121 being connected to pressure ring vestibule 13 and separate pressure ring vestibule
Accommodating area 122;The bottom wall in anticreep area is equipped with multiple wedge-shaped anticreep teeth 123, the chisel teeth adaptation of each wedge shape anticreep tooth and claw;
Accommodating area is smooth sliding slot;The present embodiment in operation, catches on the binding groove on pressure ring using hook type spanner and twists pressure ring.
The driver plate portion of each claw is located in a corresponding helicla flute;Each helicla flute is rotated synchronously with pressure ring, so that phase
A driver plate portion is answered to generate pushing effect to positioned at anticreep area, namely to the driver plate portion from positioned at accommodating area;The present embodiment
In, the independent claw in corresponding a set of claw component of each pressure ring, so that pressing plate portion in each casing pressure claw assembly is towards core pipe center
It is close to each other, to clamp the electric power cable being located in clamp hole.
When the chisel teeth in each pressing plate portion is clamped on the wedge-shaped anticreep tooth in corresponding anticreep area, wedge-shaped anticreep tooth prevents from pressing
Ring reverses, so that the present embodiment has preferable anti-loosening effect.
The voltage transformer includes annular matrix 81 and intelligent control module;In the present embodiment, the adjoining ring of a pressure ring
On the end wall of shape block machine, it is equipped with annular arrangements slot;The voltage transformer is fixed in the resettlement groove of pressure ring;Pressure ring periphery wall
On still be equipped with binding groove.Intelligent control module may include wireless transmit/receive units, and intelligent control module passes through wireless transmit/receive units
The secondary voltage or current signal that annular matrix senses are sent to distance host, to realize accurate long-range no worker monitor;
This structure can make full use of space, be conducive to whole small-sized and integrated.The present embodiment can be used as one it is intelligent
High-voltage mutual inductor uses.
For the present embodiment in order to promote clamping connection intensity, the present embodiment is equipped with multiple punctures 62 also in each arc groove;It is specific next
It says, it is each to puncture along core pipe radially protruding.
In the present embodiment, each claw is the integral piece made of casting forming, and each puncture is made in casting forming;?
In concrete practice, puncture can also be used other way and be made;Such as multiple installation card slots are equipped in each arc groove, then logical
The puncture piece cut into is overshooted to be inlaid in corresponding installation card slot;Puncturing piece includes mounting portion and thorn blade, and mounting portion is embedding
In installation card slot, thorn blade then exposes installation card slot and forms puncture.The benefit of this structure be puncture piece can using and
The different material of claw is made.
The present embodiment is by cable clamping being arranged at the longitudinal center line of Intelligent high-pressure mutual inductor, gravity centre distribution
It is relatively reasonable, when being used for high-altitude overhead power transmission line road, be conducive to mitigate vibration;In addition, the present embodiment is by having wedge shape
The slope slot of anticreep tooth positions each claw, can play the technical effect for preventing falling back, and pass through traditional bolt group
Part clamps electric power cable and compares, especially excellent in anti-loosening effect, and the reliability of long-term work is effectively ensured.
The present embodiment is clamped on same cable using two casing pressure claw assemblies, has the effect of dual fail-safe, even if wherein one
Set goes wrong in use, and there are also another set of its working performances of guarantee.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And these
Belong to the obvious changes or variations that connotation of the invention is extended out and still falls within protection scope of the present invention.