CN106247881B - A kind of localization method and positioning device of converter station valve hall shielding ball position of opening - Google Patents
A kind of localization method and positioning device of converter station valve hall shielding ball position of opening Download PDFInfo
- Publication number
- CN106247881B CN106247881B CN201610660342.5A CN201610660342A CN106247881B CN 106247881 B CN106247881 B CN 106247881B CN 201610660342 A CN201610660342 A CN 201610660342A CN 106247881 B CN106247881 B CN 106247881B
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- shielding ball
- clamping element
- localization method
- pipe bus
- opening
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 230000004807 localization Effects 0.000 title claims abstract description 27
- 230000035515 penetration Effects 0.000 claims description 16
- 230000006978 adaptation Effects 0.000 claims description 3
- 238000009826 distribution Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 9
- 238000009434 installation Methods 0.000 abstract description 4
- 238000005259 measurement Methods 0.000 abstract description 2
- 238000000926 separation method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
Abstract
The present invention relates to the localization methods and positioning device of a kind of converter station valve hall shielding ball position of opening, and capable of finding engineering site caused by position of opening accurately to solve the problems, such as to need test of many times just, difficulty of construction is big, construction efficiency is low and project cost is at high cost.Since pipe bus is corresponding with the positional relationship of upper and lower shielding ball, so using shielding ball position of opening localization method of the invention and device, it only needs first to determine the corresponding position relationship of pipe bus and lower shielding ball and makes a mark on lower shielding ball, position corresponding with the label on shielding ball can be found out, then pushes away the center that can be obtained on upper shielding ball to aperture using the position as starting point with the positional relationship of pipe bus and upper shielding ball is counter.Therefore the present invention can once find the position for needing aperture accurately, solve the problems, such as that difficulty of construction is big, construction efficiency is low and project cost is at high cost for the engineering site caused by the repeated measurement and installation of shielding ball in site operation.
Description
Technical field
The present invention relates to the localization methods and positioning device of a kind of converter station valve hall shielding ball position of opening.
Background technique
Extra-high voltage direct-current transmission technology used extensively at home in recent years, and had built a plurality of transmission line of electricity.The change of current
Station is the important component in DC transmission engineering, and converter station valve hall is to carry out an enclosure space of AC and DC conversion, valve
At Room inside conductor end, fluting and corner's corona phenomenon is serious, corona phenomenon can cause heat accumulation in turn result in it is a series of not
Good influence.Therefore it needs to add shielding fitting in the end of tubular bus and corner to increase the anticorona ability of tubular bus.
In site operation, it is connected on tubular bus in order to which ball will be shielded and need to carries out aperture in the corresponding position of shielding ball,
Since tubular bus structure is larger, it is difficult to carry out wiring operations to it, and when positioning is also easy to produce deviation, the aperture to shielding ball
Position inaccuracy will cause aperture and tubular bus decentraction, therefore the arrangement knot according to tubular bus is needed to the aperture of shielding ball
Structure is constructed at the scene.Since more than one hole may be provided on shielding ball to cooperate the tubular bus of different trends, so
It needs first to find accurately position of opening and carries out aperture again.The position of opening of shielding ball, each aperture are generally found using test method(s) now
The shielding ball of node need to be by repeatedly installation test can just find accurate location repeatedly, this not only brings very big difficulty to practical operation
Degree, while also having dragged slowly engineering site construction efficiency, having increased project cost cost.
Summary of the invention
The purpose of the present invention is to provide a kind of localization methods for shielding ball position of opening, to solve to need test of many times ability
Find the problem that difficulty of construction is big, construction efficiency is low and project cost is at high cost of engineering site caused by position of opening accurately；Meanwhile
The object of the invention is also to provide the positioning devices for implementing the localization method.
To achieve the above object, the technical solution of the localization method of converter station valve hall shielding ball position of opening of the present invention is：
Ball position of opening localization method is shielded, is included the following steps, the first step, the axis of searching outlet pipe bus and lower shielding
The intersection point a of the spherical outside surface of ball；Second step determines lower subpoint b and record intersection point a of the intersection point in the outer circle of lower shielding ball
The distance between lower subpoint b R；Third step, according to the position corresponding relationship of shielding ball upper under assembled state and lower shielding ball
Upper subpoint B corresponding with lower subpoint b in the outer circle of ball is shielded in determination, under shielding ball assembled state above and below, lower projection
Line between point b and upper subpoint B passes through the centre of sphere；4th step, by upper subpoint B and the upper centre of sphere of ball and vertical of shielding
It takes apart from upper subpoint B in the plane of upper shielding ball outer circle and the intersection of upper shielding ball spherical outside surface apart from the vertex A for being R, institute
Stating vertex A is the center for needing aperture.
First found out in the first step three along the circumferentially-spaced distribution of pipe bus and with the axial line distance phase of pipe bus
Deng anchor point, then determine anchor point when being moved along the generatrix direction of pipe bus with intersection point a1, a2 of the spherical outside surface of lower shielding ball,
A3 determines that a round principle finds 3 points of equidistant equidistant points of a1, a2, a3 on spherical outside surface further according to 3 points, etc.
It is the intersection point a away from point.
In the first step, respectively using 3 points of a1, a2, a3 as the center of circle, justified using being greater than pipe generatrix radius as straight line work, three
The center of the part of circle intersection is intersection point a.
Three anchor points are uniformly distributed along the circumferential direction of pipe bus.
The positioning device of implementation shielding ball position of opening localization method of the invention uses following technical scheme：
Implement the positioning device of shielding ball position of opening localization method, including positioning seat and guiding movement be set to positioning
The calibration element of the axis of pipe bus and the intersection point a of lower shielding ball spherical outside surface is found on seat, positioning seat includes the first clamping element, the
Two clamping elements and the fixed structure being fixedly connected for realizing the first clamping element with the second clamping element, the first, second clamping element phase
Pair two sides on have for clamping pipe bus positioning seat to be fixed on pipe bus and makes the guiding movement side of calibration element
To with the consistent clamping face of the extending direction of pipe bus.
The clamping face is to consolidate with the arcwall face of the identical adaptation of the outer diameter of pipe bus to be connect, the first, second clamping element
Arcwall face after fixed connection on two clamping elements, which is pieced together, is fixed on pipe mother with the identical inner hole being adapted to of the outer diameter of pipe bus, positioning seat
The axis of inner hole is overlapped with the axis of pipe bus after on line.
Offered on first clamping element and/or the second clamping element at least three on the same circumference, along the longitudinal direction
The pilot hole of extension, circumference and the inner hole locating for pilot hole are concentric.
First clamping element offers at least two circle pilot holes with corresponding on the second clamping element, it is each enclose pilot hole be in
On the concentric corresponding periphery of inner hole, the pilot hole respectively enclosed is evenly distributed on corresponding periphery.
Fixed structure includes the first bolt penetration hole being opened on the first clamping element, be opened on the second clamping element second
The connecting plate that bolt penetration hole and both ends offer corresponding bolt penetration hole to be connected across between the first clamping element and the second clamping element.
The calibration element includes the drawing needle extended along the longitudinal direction, and the top of drawing needle has the point for hitting lower shielding ball
End.
The beneficial effects of the invention are as follows：Since pipe bus is corresponding with the positional relationship of upper and lower shielding ball, so using
Shielding ball position of opening localization method of the invention and device, it is only necessary to first determine that pipe bus and the corresponding position of lower shielding ball close
It is and makes a mark on lower shielding ball, so that it may finds out position corresponding with the label on shielding ball, then be with the position
Starting point pushes away the center that can be obtained on upper shielding ball to aperture so that the positional relationship of pipe bus and upper shielding ball is counter.Therefore this hair
It is bright once to find the position for needing aperture accurately, it is existing to solve the engineering caused by the repeated measurement and installation of shielding ball in site operation
The field problem that difficulty of construction is big, construction efficiency is low and project cost is at high cost.
Detailed description of the invention
Fig. 1 is specific when one embodiment of shielding ball position of opening positioning device of the invention is mounted on pipe bus
Structural schematic diagram；
Fig. 2 is the structural schematic diagram of positioning seat in Fig. 1.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
The specific embodiment of shielding ball position of opening positioning device of the invention, as shown in Figure 1 to Figure 2, including along front and back
The positioning seat and the drawing needle 3 being mounted on to guiding movement in positioning seat along the longitudinal direction that direction extends.
Positioning seat includes that cross sectional shape is semicircular first clamping element 1 and the second clamping element 2, the first clamping element 1 and the
The shape of two clamping elements 2 is identical, is below that upper, the second clamping element structure type is situated between by taking the first clamping element 1 as an example
It continues.
First clamping element 1 includes the first clamp body 11 that inside offers the C-shaped of C-shaped aperture 12, the first clamping element sheet
In offering four circle pilot holes 13, leading on each circumference on four circumference of different sizes concentric with C-shaped aperture 12 on body 11
It is arranged to hole 13 along respective even circumferential.Since lower shield in ball is equipped with other connection structures in use,
So needing to open up multiple pilot holes on upper, the second clamp body, so that drawing needle can not be by lower screen in actual use
Cover the Internal Spherical Surface that the connection structure in ball hinders and can hit lower shielding ball.Not influence opening up while again for pilot hole 13
Do not increase the size of the first clamp body 11, lug 14 is projected on the left and right sides of the first clamp body 11 and in lug
The first bolt penetration hole 15 passed through for bolt is offered on 14.In other embodiments, knot is connected in it can determine that lower shielding ball
In the case where the installation site of structure, the pilot hole of every circle can also only open up three；Certainly, a circle pilot hole can also only be opened up；
Clamping element can also can be fixedly clamped in pipe by the arcwall face formed on clamp body by c-type hole by plane or V-type face etc.
On bus other clamp faces replace, at this time should use others location measures to guarantee that positioning seat is fixed on pipe bus after
Periphery and pipe bus coaxial line where each circle pilot hole.
Second clamping element 2 also includes the second clamp body that inside has C-shaped aperture, and the second clamp body is equipped with convex
Ear offers the second bolt penetration hole on lug, four circle pilot holes is also provided on the second clamp body.
For convenient for the assembling to positioning seat, central angle corresponding at the left and right ends point of the first clamp body 11 is designed
For less than 180 degree, so when the first clamping element 1 and the second clamping element 2 are assembled into positioning seat, the first clamp body 11 and
Two clamp bodies needs are achieved a fixed connection by the connecting plate 4 being connected across between the first clamping element and the second clamping element.Specifically
It is to say, the both ends of connecting plate 4 offer the second bolt penetration hole of the first bolt penetration hole of connecting plate and connecting plate of perforation connecting plate wall thickness respectively, will
Connecting plate 4 is connected across on the first clamp body and the second clamp body, and makes the first bolt penetration hole of connecting plate and the first clamping element
The second bolt on 15 position of the first bolt penetration hole correspondence, the second bolt penetration hole of connecting plate and the second clamp body on ontology 11
Punch position is corresponding, then the first clamp body and the second clamp body are fixed as one by clamping screw.Connecting plate 4
Design of length makes the C-shaped aperture on the first clamp body and the second clamp body after connecting plate 4 is fixed define one
Complete circle.In other embodiments, the bolt penetration hole on clamp body and connecting plate can be saved but in connecting plate and clamping
Corresponding buckle structure is set on part ontology, to snap connection as the fixation being fixedly connected for realizing connecting plate and clamp body
Structure；Certainly, connecting plate may be omitted with, but the first clamp body 11 and the second clamp body are made into complete half
Circle, and in the bolt penetration hole of the end of two clamp bodies setting adaptation, the directly bolt penetration hole in two clamp body ends
In install bolt and realize that two clamp bodies are fixedly connected.
Drawing needle 3 is that front end processes cuspidated cylindrical bar, and tip is used to hit the Internal Spherical Surface of lower shielding ball so that shielding ball
Spherical outside surface on reveal trace, the outer diameter of cylindrical bar coincide with the pilot hole outer diameter on clamp body be adapted to, is coincide and is fitted herein
The drawing needle that is meant that matched can be inserted into pilot hole and can be along pilot hole guiding movement without deviating, and the hole wall of pilot hole is
Play the role of being oriented to drawing needle 3.In other embodiments, in impact force enough in the case where display trace on spherical outside surface
The top of drawing needle can not also process tip.
The shielding ball position of opening positioning device can be used to determine that operating condition required for shielding ball position of opening is：Lower shielding
Ball and pipe bus 5 have installed, and upper shielding ball waits for aperture on the pipe bus 5, it should be pointed out that due to lower shielding ball and
Other connection structures are also equipped in upper shielding ball, it is unique corresponding for shielding ball below with the positional relationship of upper shielding ball
, in other words any point on lower shielding ball also only exists a point unique in this way on upper shielding ball and is corresponding to it.
More clearly to express the method for finding position of opening on upper shielding ball, it is fixed as follows to carry out in present specification
Justice：
The definition in bulb separation face：One complete sphere is divided into two and becomes two full symmetric hemisphere, separates sphere
Face be known as bulb separation face；
The definition of outer circle：The spherical outside surface of sphere intersects with bulb separation face is formed by circle referred to as outer circle；
The definition on vertex：Pass through the centre of sphere and the point intersected perpendicular to the axis in bulb separation face with spherical outside surface is known as vertex；
The definition of episphere and lower semisphere：Mounted hemisphere is known as lower semisphere, waits aperture, does not install and be placed on ground
On hemisphere be known as episphere；
After meeting conditions above, the embodiment using the shielding ball position of opening localization method is as follows：
The first step first finds out the intersection point a of the axis of pipe bus 5 and the spherical outside surface of lower shielding ball；
Concrete operation step is as follows in the first step：Positioning seat suit is fixed on pipe bus 5, at this time the inner hole of positioning seat
With 5 coaxial line of pipe bus, and every circle pilot hole 13 on positioning seat with 5 coaxial line of pipe bus；By drawing needle 3 by same circumference
Three different pilot holes in pass through and push drawing needle 3 to hit the Internal Spherical Surface of lower shielding ball, the dynamics of shock is with can be in lower screen
It covers on the spherical outside surface of ball subject to display trace, can show trace a1, a2, a3 at three on the spherical outside surface of lower shielding ball in this way；
Using the principle of three strokes and dots circles, the intersection point of the axis of pipe bus 5 and the spherical outside surface of lower shielding ball is found out with compasses, is specifically distinguished
Using a1, a2, a3 as the center of circle, to be greater than but draw close to the distance of 5 radius of pipe bus as compasses the radius of circle, drawn on spherical outside surface
Three circular arcs out, three circular arcs intersect at the region of a very little, and the center in the region is the intersection point a to be looked for.It is selecting
When pilot hole, it should select 3 circumferentially uniformly distributed pilot hole so that a1, a2, a3 are uniform relative to pipe mother's central distribution,
At this moment the intersecting area of three circular arcs drawn is more regular and is easy to determine the center of intersecting area.
Second step finds out lower subpoint b of the intersection point a on the periphery of lower semisphere；
Concrete operation step is as follows in second step：Using vertex a as the center of circle, in lower semisphere spherical outside surface upper drawing circle and remembered with compasses
The radius R1 of picture circle is recorded, it is round to generate two intersection points with outer circle, it is denoted as b1, b2 respectively, outer circle is marked or measured with a yardstick out with compasses
The intermediate point of upper b1, b2 two o'clock simultaneously records the distance between intermediate point and b1 L, which is intersection point a in the outer of lower semisphere
Lower subpoint b on disc, the distance between subpoint b and intersection point a are denoted as R at present for this.
Third step finds out upper subpoint B corresponding with lower subpoint b on the outer peripheral surface of episphere；
By analyze above it is found that it is upper shielding ball and it is lower shielding ball on point there are one-to-one relationships, so in determination
Subpoint B can be redefined after lower subpoint b.Herein it should be noted that upper subpoint B is not to be in upper shielding
The point that ball is overlapped after fastening with lower shielding ball with lower subpoint b, but in periphery after upper shielding ball and lower shielding ball fasten
The upper point for being separated by 180 degree with lower subpoint b.In other words, upper subpoint B and lower projection after upper shielding ball and lower shielding ball fasten
Line between point b passes through the centre of sphere（The centre of sphere that is upper at this time, shielding ball is to be overlapped）.
4th step finds out the central point A that aperture is needed on shielding ball；
Centered on the above subpoint B, the two o'clock at a distance from upper subpoint B for L is found out on the periphery of upper shielding ball
B1,B2；It is radius in spherical outside surface upper drawing circle using the radius R1 in second step, the intersection point of two circles is respectively using B1, B2 point as the center of circle
For the central point A point to aperture.In this step, A point be by it is upper shielding ball the centre of sphere and B and perpendicular to upper shielding ball outside
The point that distance on the intersection of round plane and upper shielding ball spherical outside surface apart from subpoint B is R.
After central point A has been determined, so that it may carry out aperture and subsequent installment work to upper shielding ball.
In the other embodiments of shielding ball position of opening positioning device, drawing needle can also include 3, and by 3 drawing needles
Rear end be connected to one disposably to mark 3 traces on lower shielding ball, 3 drawing needles being fixed as one at this time
Form calibration element；Certainly, pilot hole can also be arranged on the first, second clamp body, opening towards radial direction
Groove on the outside of direction replaces.
Shield the specific embodiment of ball position of opening localization method：Shield ball position of opening localization method and shielding ball aperture
Shielding ball position of opening localization method is identical in the embodiment of location position device, and this will not be detailed here.
In the other embodiments of shielding ball position of opening localization method, it can also be arranged in the center of pipe bus and shine
Direction laser pen identical with the extending direction of pipe bus is penetrated, the trace that laser pen is emerging on lower shielding ball spherical outside surface is denoted as
Intersection point a.
Claims (10)
1. shielding ball position of opening localization method, it is characterised in that：Include the following steps, the first step, finds the axis of outlet pipe bus
The intersection point a of the spherical outside surface of line and lower shielding ball；Second step determines lower subpoint b of the intersection point in the outer circle of lower shielding ball
And the distance between record intersection point a and lower subpoint b R；Third step, according to the position of shielding ball upper under assembled state and lower shielding ball
It sets corresponding relationship and determines upper subpoint B corresponding with lower subpoint b in the outer circle for shielding ball, combine shape in shielding ball above and below
Under state, the line between lower subpoint b and upper subpoint B passes through the centre of sphere；4th step, by upper subpoint B and upper shielding ball
The centre of sphere and plane perpendicular to upper shielding ball outer circle and the upper intersection for shielding ball spherical outside surface on take and be apart from upper subpoint B distance
The vertex A of R, the vertex A are the center for needing aperture.
2. shielding ball position of opening localization method according to claim 1, it is characterised in that：It is first looked in the first step
Three circumferentially-spaced distributions along pipe bus and the anchor point equal with the axial line distance of pipe bus out, then determine anchor point along pipe
With intersection point a1, a2, a3 of the spherical outside surface of lower shielding ball when the generatrix direction movement of bus, a round original is determined further according to 3 points
Reason finds 3 points of equidistant equidistant points of a1, a2, a3 on spherical outside surface, and equidistant points is the intersection point a.
3. shielding ball position of opening localization method according to claim 2, it is characterised in that：In the first step, point
Not using 3 points of a1, a2, a3 as the center of circle, to be greater than but do circle, the portion of three circle intersections as radius close to the distance of pipe generatrix radius
The center divided is intersection point a.
4. shielding ball position of opening localization method according to claim 2 or 3, it is characterised in that：Three anchor points are along pipe
The circumferential direction of bus is uniformly distributed.
5. implementing the positioning device of shielding ball position of opening localization method, it is characterised in that：Including positioning seat and guiding movement
The calibration element of the intersection point a of axis and lower shielding ball spherical outside surface to find pipe bus is set on positioning seat, and positioning seat includes the
One clamping element, the second clamping element and the fixed structure being fixedly connected for realizing the first clamping element with the second clamping element, first,
Have for clamping pipe bus on the opposite two sides of two clamping elements positioning seat to be fixed on pipe bus and makes calibration element
The consistent clamping face of extending direction in guiding movement direction and pipe bus.
6. the positioning device according to claim 5 for implementing shielding ball position of opening localization method, it is characterised in that：It is described
Clamping face is two folders after the first, second clamping element is fixedly connected with the arcwall face of the identical adaptation of the outer diameter of pipe bus to be connect
Arcwall face on tight part is pieced together with the identical inner hole being adapted to of the outer diameter of pipe bus, inner hole after positioning seat is fixed on pipe bus
Axis is overlapped with the axis of pipe bus.
7. the positioning device according to claim 6 for implementing shielding ball position of opening localization method, it is characterised in that：First
At least three are offered on clamping element and/or the second clamping element is in pilot hole on same circumference, extending along the longitudinal direction,
Circumference locating for pilot hole and the inner hole are concentric.
8. the positioning device according to claim 7 for implementing shielding ball position of opening localization method, it is characterised in that：First
Clamping element offers at least two circle pilot holes with corresponding on the second clamping element, and each pilot hole that encloses is in the phase concentric with inner hole
It answers on periphery, the pilot hole respectively enclosed is evenly distributed on corresponding periphery.
9. the positioning device of implementation shielding ball position of opening localization method, special according to any one of claim 5 ~ 8
Sign is：Fixed structure includes the first bolt penetration hole being opened on the first clamping element, be opened on the second clamping element second
The connecting plate that bolt penetration hole and both ends offer corresponding bolt penetration hole to be connected across between the first clamping element and the second clamping element.
10. the positioning device of implementation shielding ball position of opening localization method, special according to any one of claim 5 ~ 8
Sign is：The calibration element includes the drawing needle extended along the longitudinal direction, and the top of drawing needle has the point for hitting lower shielding ball
End.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610660342.5A CN106247881B (en) | 2016-08-12 | 2016-08-12 | A kind of localization method and positioning device of converter station valve hall shielding ball position of opening |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610660342.5A CN106247881B (en) | 2016-08-12 | 2016-08-12 | A kind of localization method and positioning device of converter station valve hall shielding ball position of opening |
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| CN106247881A CN106247881A (en) | 2016-12-21 |
| CN106247881B true CN106247881B (en) | 2018-11-27 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108168392A (en) * | 2017-12-21 | 2018-06-15 | 沪东中华造船(集团)有限公司 | A kind of bore hole verification auxiliary device and its application method |
| CN114252008B (en) * | 2021-10-26 | 2024-04-09 | 平高集团威海高压电器有限公司 | Alignment positioning device for shielding ball hole opening |
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| TW200832654A (en) * | 2007-01-26 | 2008-08-01 | Advanced Semiconductor Eng | Semiconductor package for electromagnetic shielding |
| CN103296622A (en) * | 2013-05-27 | 2013-09-11 | 国家电网公司 | Shield ball fitting for converter station valve hall |
| CN104128718A (en) * | 2013-06-27 | 2014-11-05 | 国家电网公司 | Spherical metal shell assembling method and detection tool special for implementing same |
| CN105066819A (en) * | 2015-08-14 | 2015-11-18 | 平高集团有限公司 | Shielding ball holing position positioning method and positioning device |
| CN205283033U (en) * | 2015-11-27 | 2016-06-01 | 平高集团有限公司 | Pipe generating line jumper connection gold utensil |
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2016
- 2016-08-12 CN CN201610660342.5A patent/CN106247881B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TW200832654A (en) * | 2007-01-26 | 2008-08-01 | Advanced Semiconductor Eng | Semiconductor package for electromagnetic shielding |
| CN103296622A (en) * | 2013-05-27 | 2013-09-11 | 国家电网公司 | Shield ball fitting for converter station valve hall |
| CN104128718A (en) * | 2013-06-27 | 2014-11-05 | 国家电网公司 | Spherical metal shell assembling method and detection tool special for implementing same |
| CN105066819A (en) * | 2015-08-14 | 2015-11-18 | 平高集团有限公司 | Shielding ball holing position positioning method and positioning device |
| CN205283033U (en) * | 2015-11-27 | 2016-06-01 | 平高集团有限公司 | Pipe generating line jumper connection gold utensil |
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Effective date of registration: 20170502 Address after: South East of Pingdingshan city in Henan province 467001 No. 22 Applicant after: Pinggao Group Co., Ltd. Applicant after: State Grid Corporation of China Applicant after: State Power Economic Research Institute Applicant after: State Grid Hebei Electric Power Company Address before: South East of Pingdingshan city in Henan province 467001 No. 22 Applicant before: Pinggao Group Co., Ltd. Applicant before: State Grid Corporation of China Applicant before: State Power Economic Research Institute |
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| GR01 | Patent grant |