CN104965128B - Bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument - Google Patents
Bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument Download PDFInfo
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- CN104965128B CN104965128B CN201510368924.1A CN201510368924A CN104965128B CN 104965128 B CN104965128 B CN 104965128B CN 201510368924 A CN201510368924 A CN 201510368924A CN 104965128 B CN104965128 B CN 104965128B
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- control button
- grounding means
- embedding groove
- bottom shielding
- stem
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- 238000012360 testing method Methods 0.000 title claims abstract description 30
- 125000006850 spacer group Chemical group 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims description 5
- 244000144985 peep Species 0.000 claims description 4
- 229910001369 Brass Inorganic materials 0.000 claims description 3
- 239000004677 Nylon Substances 0.000 claims description 3
- 239000010951 brass Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 229920001778 nylon Polymers 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 238000002474 experimental method Methods 0.000 abstract description 2
- 235000010585 Ammi visnaga Nutrition 0.000 description 4
- 244000153158 Ammi visnaga Species 0.000 description 4
- 241000755266 Kathetostoma giganteum Species 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005461 lubrication Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 235000019994 cava Nutrition 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
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Abstract
A kind of bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument.It includes main body, terminal stud, fixing axle, control button, energy-stored spring and spacer pin；The lower end of terminal stud is set through main body left part；Adjustment hole is formed with the middle part of control button, control button is fixed in embedding groove using fixing axle, control button left end is connected with terminal stud top；Energy-stored spring lower end is fixed on embedding groove right-hand member bottom surface；Spacer pin is fixed on embedding groove right side top, while the right-hand member of control button is inserted in spacer pin in the way of being slidably connected.Effect of the present invention：It can solve the problem that the drawbacks of bottom shielding of bushing earthing or grounding means is in sleeve pipe dielectric loss and megger test work, potential safety hazard of the transformer after the work of above-mentioned checking experiment is prevented, effective safety measure and technical guarantee is provided further to improve safety utilization of electric power reliability.In addition, this instrument also has reasonable in design, uses easy to carry and low cost and other advantages.
Description
Technical field
The invention belongs to power system detection technical field of tools, more particularly to a kind of bottom shielding of bushing earthing or grounding means uses many
Function auxiliary testing tool.
Background technology
In power system, the structure of conventional 0HS3967 molded cannula end shield earthing or grounding means is as shown in figure 1, it is wrapped at present
Include sealing ring 1, ground connection lid 2, ground sleeve 3, stem 5, base 7, insulation board 8, spring 9 and inner sleeve 10；The wherein edge of base 7
It is grounded using the reserved location being bolted on bushing shell for transformer flange, its middle part is formed with a centre bore；Absolutely
Listrium 8 is arranged in the centre bore on base 7；The left end of stem 5 is fixed on the center of insulation board 8, and right-hand member extends to bottom
Outside seat 7, and right part has been radially formed a fixing hole 4；Spring 9 is enclosed on the middle part of stem 5；Ground sleeve 3 is in hat shape,
And upper surface is formed with a perforate for leadthrough post 5, and the right part of stem 5 is enclosed in a sliding manner；Inner sleeve 10
In lid, end face center is formed with a circular hole being used for through the top of ground sleeve 3, around being arranged on outside spring 9 and ground sleeve 3
Side, lower end is fixed on base 7, and Circularhole diameter is less than the diameter of shade on ground sleeve 3；It is also in lid to be grounded lid 2, is surrounded
The outside of inner sleeve 10 is arranged on, and lower end is fixed on base 7 by sealing ring 1.During normal use, bottom shielding of bushing ground connection
The ground connection of device be by spring 9 be pressurized after the bounce that produces ground sleeve 3 is outwards elapsed along stem 5, the cap on ground sleeve 3
Along will be in contact with the circular hole internal orifice in inner sleeve 10, as shown in A in Fig. 1, the purpose of ground connection is thus reached.The now internal diameter of spring 9
And one end is in contact with stem 5, ground sleeve 3 is slidably matched with stem 5, and the shade of ground sleeve 3 is closely crimped with spring 9,
Preferable and contact resistance very little is contacted between three, makes the safety ground of stem 5.But, this bottom shielding of bushing earthing or grounding means exists
Carry out there is following point when sleeve pipe dielectric loss and megger test：As shown in Fig. 2 working as needs to carry out sleeve pipe dielectric loss
And during megger test, ground connection lid 3 is unclamped by tester first, the outer of ground sleeve 3 is then withstood with Flathead screwdriver
End is by its ejection inward, so as to expose the fixing hole 4 of the outer end of stem 5, then insertion one is preprepared in the hole
Toothpick 11 prevents it from resetting to fix ground sleeve 3, the circular hole internal orifice that at this moment shade on ground sleeve 3 will be left in inner sleeve 10
And the purpose for departing from ground connection is reached, so as to meet test job needs.After the completion of work to be tested, then use Flathead screwdriver top
Firmly the outer end of ground sleeve 3 slightly pushes away it inward, then extracts toothpick 11, but now the wood-fibred on toothpick 11 often because by crowded
Pressure the reason such as scratches and is trapped in fixing hole 4 and in the annular space between stem 5 and ground sleeve 3, or even sometimes can also be by
Toothpick 11 is squeezed off in fixing hole 4, or scratching stem 5 when with Flathead screwdriver ejection ground sleeve 3 and making to produce thereon
Raw cut or trickle copper scale, these can all make slip of the ground sleeve 3 along stem 5 be obstructed so that influence ground sleeve 3 reset and
Earthing effect；Further, since lacking grease lubrication for a long time between stem 5 and ground sleeve 3, the movement bite of ground sleeve 3 will also result in
The phenomenon of imperfect earth, so as to cause bottom shielding of bushing earthing or grounding means imperfect earth, easily causes ground sleeve 3 to be sent out in this case
Heat, the heating of ground sleeve 3 can make spring 9 be caused elastic force to be gradually reduced by thermal annealing again, and then cause transformer high-voltage bushing quick-fried
It is fried, ultimately cause external power failure.
The content of the invention
In order to solve the above problems, it is an object of the invention to provide a kind of bottom shielding of bushing earthing or grounding means with multi-functional auxiliary
Testing tool.
In order to achieve the above object, the bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument that the present invention is provided includes
Main body, terminal stud, fixing axle, control button, energy-stored spring and spacer pin；Wherein main body is made of permeability nylon, left end
Middle face caves inward to be formed with a stem patchhole, front end face depression backward and be formed with a rear end and stem and inserted
Enter the peep hole that hole is connected, while depression is formed with an embedding groove, and the right side of embedding groove downwards in the middle part of upper surface
For the inclined-plane of upper end flare, bottom surface is the inclined-plane that right-hand member has a down dip；The lower end of terminal stud is run through behind main body left part from the top down
It is inserted into stem patchhole, and can moves up and down；Control button is shaft-like, and middle part is formed with an adjustment hole, profit
Control button is fixed in embedding groove by the fixing axle being fixed on two ends on embedding groove front-rear side walls through the method for adjustment hole,
And the left end of control button is connected with terminal stud top；The lower end of energy-stored spring is fixed on embedding groove right-hand member bottom surface, and
And setting direction is parallel with embedding groove right side；Spacer pin is fixed on embedding groove right side top, and positioned at energy-stored spring upper end
Top, while the right-hand member of control button is inserted in spacer pin in the way of being slidably connected.
Described adjustment hole is slotted hole, at away from control button right-hand member 1/3, is located in control button on the left of adjustment hole
Position to be long-armed, the position on right side is galianconism.
Described terminal stud lower end diameter is less than the fixation bore dia of stem outer end on bottom shielding of bushing earthing or grounding means.
Angle between described embedding groove right side and horizontal plane is 101.5 °, while right side and the level of control button
Angle between face is also 101.5 °.
Described terminal stud is made of brass material, and upper end is provided with for test lead on clamping dielectric loss electric bridge
Handle for connection.
The external port diameter of described stem patchhole is more than the diameter of stem on bottom shielding of bushing earthing or grounding means, simultaneously
Less than the external diameter of ground sleeve.
The bottom shielding of bushing earthing or grounding means that the present invention is provided is had the advantages that with multi-functional auxiliary testing instrument：Can
The drawbacks of bottom shielding of bushing earthing or grounding means is in sleeve pipe dielectric loss and megger test work is solved, has prevented transformer upper
The potential safety hazard after checking experiment work is stated, effective safety measure and skill are provided further to improve safety utilization of electric power reliability
Art is ensured.In addition, this instrument also has reasonable in design, uses easy to carry and low cost and other advantages.
Brief description of the drawings
Fig. 1 is a kind of 0HS3967 molded cannula end shield grounding device constructions longitudinal sectional views conventional at present.
Fig. 2 is the bottom shielding of bushing earthing or grounding means test mode schematic diagram shown in Fig. 1.
The bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing tool construction longitudinal sectional view that Fig. 3 present invention is provided.
The bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument use state schematic diagram that Fig. 4 provides for the present invention.
Embodiment
The bottom shielding of bushing earthing or grounding means provided below in conjunction with the accompanying drawings with specific embodiment the present invention is surveyed with multi-functional auxiliary
Trial work tool is described in detail.Identical drawing reference numeral is used with prior art identical part.
As shown in Figure 3, Figure 4, the bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument that the present invention is provided includes master
Body 12, terminal stud 13, fixing axle 14, control button 15, energy-stored spring 16 and spacer pin 17；Wherein main body 12 uses permeability Buddhist nun
Dragon is made, and caving inward to be formed with a stem patchhole 18, front end face to be recessed backward in the middle part of left side is formed with one
The peep hole 19 that rear end is connected with stem patchhole 18, while depression is formed with an embedding groove downwards in the middle part of upper surface
20, and the right side of embedding groove 20 is the inclined-plane of upper end flare, and bottom surface is the inclined-plane that right-hand member has a down dip；The lower end of terminal stud 13
It is inserted into stem patchhole 18, and can moves up and down after running through the left part of main body 12 from the top down；Control button 15
To be shaft-like, middle part is formed with an adjustment hole 21, and the fixing axle 14 being fixed on using two ends on the front-rear side walls of embedding groove 20 is run through
Control button 15 is fixed in embedding groove 20 by the method for adjustment hole 21, and on the left end and terminal stud 13 of control button 15
Portion is connected；The lower end of energy-stored spring 16 is fixed on the right-hand member bottom surface of embedding groove 20, and setting direction and the right side of embedding groove 20
It is parallel；Spacer pin 17 is fixed on the right side top of embedding groove 20, and positioned at the upper end of energy-stored spring 16, while control button 15
Right-hand member be inserted in the way of being slidably connected in spacer pin 17.
Described adjustment hole 21 is slotted hole, at away from the right-hand member 1/3 of control button 15, and regulation is located in control button 15
The position in the left side of hole 21 is long-armed, and the position on right side is galianconism.
The fixing hole 4 that the described lower end diameter of terminal stud 13 is less than the outer end of stem 5 on bottom shielding of bushing earthing or grounding means is straight
Footpath.
Angle between the described right side of embedding groove 20 and horizontal plane is 101.5 °, at the same the right side of control button 15 with
Angle between horizontal plane is also 101.5 °.
Described terminal stud 13 is made of brass material, and upper end is provided with to be used to test on clamping dielectric loss electric bridge and drawn
The handle for connection 23 of line.
The external port diameter of described stem patchhole 18 is more than the diameter of stem 5 on bottom shielding of bushing earthing or grounding means,
Simultaneously less than the external diameter of ground sleeve 3.
The bottom shielding of bushing earthing or grounding means that now present invention is provided is described below with multi-functional auxiliary testing instrument application method：
Survey when needing to carry out sleeve pipe dielectric loss and insulaion resistance to bottom shielding of bushing earthing or grounding means using this multi-functional auxiliary testing instrument
During examination, the galianconism of control button 15 on multi-functional auxiliary testing instrument is pressed by tester first, then will be drawn in main body 12
The outer end of stem 5 on the external port alignment sleeve end shield earthing or grounding means of terminal patchhole 18, promotes main body 12 inwards afterwards, this
When bottom shielding of bushing earthing or grounding means on ground sleeve 3 will in the presence of the external port edge of stem patchhole 18 along stem 5 to
Interior movement, in the process tester can by peep hole 19 observe stem 5 on fixing hole 4 position, treat terminal stud
When 13 lower ends are located exactly at 4 top of fixing hole, control button 15 is unclamped, at this moment the galianconism outer end in control button 15 will be in energy storage
Pan-up in the presence of spring 16 and spacer pin 17, if it is 2 millimeters that galianconism, which moves up distance, due to long-armed and galianconism length
Than for 2：1, then the long-armed outer end being connected with terminal stud 13 will move down 4 millimeters, thus drive the lower end of terminal stud 13
It is inserted into the fixing hole 4 on stem 5, at this moment ground sleeve 3 will extrude the lower end of terminal stud 13 in the presence of spring 9
In the fixing hole 4 of stem 5, make to contact good between terminal stud 13 and stem 5, to ensure that measurement signal is unaffected,
Finally the test lead of clamping dielectric loss electric bridge can just proceed by test job on the handle for connection 23 of the upper end of terminal stud 13.
Further, since adjustment hole 21 is slotted hole, therefore when pressing the galianconism in control button 15, galianconism brachium can be
Micro in the presence of the right side inclined-plane of embedding groove 20 to shorten, to be finely adjusted to galianconism brachium, and the fine setting of galianconism brachium is precisely
It is long-armed to need to maintain terminal stud 13 to keep vertically moving required trim lengths.Spacer pin 17 can both ensure control button
15 vertical range, can keep, control the direction of displacement of terminal stud 13, to prevent it from coming off again.When release control button 15
When, in the presence of energy-stored spring 16 and adjustment hole 21, still terminal stud 13 can be kept vertically to move down, because energy-stored spring
16 setting angle is identical with the angle of inclination of the right side of embedding groove 20, therefore it can produce elastic force obliquely upward, this power
Control button 15 and terminal stud 13 can be made to reset rapidly.
Further, since main body 12 be made of use permeability nylon, therefore under the squeezing action of ground sleeve 3 and spring 9 its
On lubricating oil will be transferred in the annular space between stem 5 and ground sleeve 3, so as to play to stem 5 with ground connection
Lubrication between set 3, fundamentally solves ground sleeve 3 and not smooth disadvantage is slided along stem 5, reach ground sleeve 3 with connecing
The purpose of place good earth, has ensured the safe and stable operation of transformer.
Claims (6)
1. a kind of bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument, it is characterised in that：It includes main body (12), wiring
Newel post (13), fixing axle (14), control button (15), energy-stored spring (16) and spacer pin (17)；Wherein main body (12) is used and oozed
Oily nylon is made, and is caved inward in the middle part of left side and is formed with a stem patchhole (18), front end face depression formation backward
There is the peep hole (19) that a rear end is connected with stem patchhole (18), while depression is formed with one downwards in the middle part of upper surface
Individual embedding groove (20), and the right side of embedding groove (20) is the inclined-plane of upper end flare, and bottom surface is the inclined-plane that right-hand member has a down dip；Wiring
The lower end of newel post (13) is run through behind main body (12) left part from the top down to be inserted into stem patchhole (18), and can on
Lower movement；Control button (15) is shaft-like, and middle part is formed with an adjustment hole (21), is fixed on using two ends before embedding groove (20)
Control button (15) is fixed in embedding groove (20) by the fixing axle (14) on rear wall through the method for adjustment hole (21), and
The left end of control button (15) is connected with terminal stud (13) top；It is right that the lower end of energy-stored spring (16) is fixed on embedding groove (20)
Hold on bottom surface, and setting direction is parallel with embedding groove (20) right side；Spacer pin (17) is fixed on embedding groove (20) right side
Top, and positioned at energy-stored spring (16) upper end, while the right-hand member of control button (15) is inserted in the way of being slidably connected
In spacer pin (17).
2. bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument according to claim 1, it is characterised in that：It is described
Adjustment hole (21) be slotted hole, at away from control button (15) right-hand member 1/3, in control button (15) be located at adjustment hole (21)
The position in left side is long-armed, and the position on right side is galianconism.
3. bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument according to claim 1, it is characterised in that：It is described
Terminal stud (13) lower end diameter be less than bottom shielding of bushing earthing or grounding means on stem (5) outer end fixing hole (4) diameter.
4. bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument according to claim 1, it is characterised in that：It is described
Angle of the embedding groove (20) between right side and horizontal plane be 101.5 °, while between the right side of control button (15) and horizontal plane
Angle also be 101.5 °.
5. bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument according to claim 1, it is characterised in that：It is described
Terminal stud (13) be made of brass material, and upper end is provided with is used for the handle for connection of test lead on clamping dielectric loss electric bridge
(23)。
6. bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument according to claim 1, it is characterised in that：It is described
Stem patchhole (18) external port diameter be more than bottom shielding of bushing earthing or grounding means on stem (5) diameter, be less than simultaneously
The external diameter of ground sleeve (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510368924.1A CN104965128B (en) | 2015-06-29 | 2015-06-29 | Bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510368924.1A CN104965128B (en) | 2015-06-29 | 2015-06-29 | Bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument |
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| Publication Number | Publication Date |
|---|---|
| CN104965128A CN104965128A (en) | 2015-10-07 |
| CN104965128B true CN104965128B (en) | 2017-09-15 |
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| CN201510368924.1A Active CN104965128B (en) | 2015-06-29 | 2015-06-29 | Bottom shielding of bushing earthing or grounding means multi-functional auxiliary testing instrument |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114204289B (en) * | 2021-11-19 | 2024-04-26 | 国网山西省电力公司电力科学研究院 | Capacitive bushing end screen grounding device |
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| CN104965128A (en) | 2015-10-07 |
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