CN103363879A - Power tubular bus bar expansion and shrinkage monitoring device and power tubular bus bar expansion and shrinkage monitoring method - Google Patents
Power tubular bus bar expansion and shrinkage monitoring device and power tubular bus bar expansion and shrinkage monitoring method Download PDFInfo
- Publication number
- CN103363879A CN103363879A CN201310285483XA CN201310285483A CN103363879A CN 103363879 A CN103363879 A CN 103363879A CN 201310285483X A CN201310285483X A CN 201310285483XA CN 201310285483 A CN201310285483 A CN 201310285483A CN 103363879 A CN103363879 A CN 103363879A
- Authority
- CN
- China
- Prior art keywords
- power pipe
- pipe bus
- monitoring device
- rotation axis
- bus
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Testing Or Calibration Of Command Recording Devices (AREA)
- Installation Of Bus-Bars (AREA)
Abstract
The invention is applicable to the technical field of power tubular bus bars, and provides a power tubular bus bar expansion and shrinkage monitoring device and a power tubular bus bar expansion and shrinkage monitoring method. The power tubular bus bar expansion and shrinkage monitoring device comprises a motion conversion mechanism and a holder for fixing the whole device, the motion conversion mechanism comprises a driving rod and a rotary shaft, a pointer is fixed on one end of the rotary shaft, which passes through a dial, and when the driving rod is pushed to move, the pointer can rotate along with the rotary shaft. The invention utilizes the motion conversion mechanism to amplify and convert the linear displacement of a power tubular bus into the angular displacement of the rotary shaft, moreover, the angular displacement is indicated by the pointer on the dial, and thereby managing personnel can conveniently, visually and accurately observe.
Description
Technical field
The invention belongs to power pipe bus technical field, relate in particular to a kind of power pipe bus dilation monitoring device and method.
Background technology
Transformer station's high voltage (220kV, 110kV) grade electrical equipment all connects by tubulose aluminium wire, and these wires are referred to as bus.The effect of bus is to compile, distribute and transmit electric energy.Bus is divided into hard bus and soft bus by structure, and hard bus is divided into again brace type bus and suspension type bus.The brace type bus is widely used in 220kV transformer station because of advantages such as its floor area are little, simple in structure, through-current capacity is large.
Brace type tubulose bus is comprised of bus structure, porcelain insulator, bus bar cupport, bus bar fixing hardware and power pipe bus usually.Described bus structure is general apart from ground 3.5-4 rice, 1.2 meters of described porcelain insulator height, be fixed on the bus structure, the 220kV bus saves porcelain insulators with two, described bus bar cupport is fixed on porcelain insulator top, power pipe bus two ends are supported by described bus bar fixing hardware, described bus bar fixing hardware comprises movable gold utensil and fixed gold utensil, power pipe bus one end is installed a fixed gold utensil, the other end is installed movable gold utensil, when variation of ambient temperature caused the power pipe bus to expand with heat and contract with cold, fixed gold utensil had limited the breathing direction of power pipe bus, and movable gold utensil can allow the free to contract and expand of power pipe bus.Can't be so that the serious accidents such as porcelain insulator ruptures, bus collapses occur in power pipe bus free-extension like this if the bite fault appears in movable gold utensil.Therefore must often monitor the breathing situation of power bus-bar, if note abnormalities, in time take measures to fix a breakdown, guarantee the power plant safety reliability service.
At present the method for observation power pipe bus dilation situation is standardized the markings of power pipe bus in movable gold utensil one side, fixes a graduated scale and extends to below the markings of tubulose bus at the carriage of movable gold utensil.During power pipe bus dilation, the scale label of the markings of pipe bus relative to its below produces and moves.If environment temperature changes, and the markings of pipe bus illustrate then that without mobile phenomenon movable gold utensil has the bite fault, and eliminating must take immediate steps.But under the actual conditions, because the limited length (general about 10 meters) of the power pipe bus of each unit, its amplitude with variation of ambient temperature is very little, generally speaking, 1 ℃ of variation of ambient temperature, its length variations are less than 0.5mm, and therefore directly observation and comparison is difficult.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of power pipe bus dilation monitoring device and method, be intended to solve because power pipe bus dilation amount is usually less, directly the relatively more difficult technical matters of sighting tube bus linear displacement.
On the one hand, described power pipe bus dilation monitoring device comprises movement conversion mechanism and the holder that is used for fixing whole device, described movement conversion mechanism comprises driving stem and rotation axis, after passing a dial plate, described rotation axis one end is fixed with pointer, when promoting described driving stem displacement, described pointer rotates together with described rotation axis.
Further, described movement conversion mechanism also comprises the rotary shaft rack that is fixed on the described dial plate back side, and described rotation axis one end passes described dial plate, and the other end passes described rotary shaft rack.
Further, described rotary shaft rack and rotation axis junction, and described dial plate and rotation axis junction are equipped with bearing.
Further, described dial plate also is fixed with the back cover for the protection of described movement conversion mechanism.
Further, described driving stem is tooth bar, the tooth axle of described rotation axis for being meshed with described tooth bar, and described tooth axle is located on the described rotary shaft rack.
Further, described movement conversion mechanism also comprises the stay cord that tightly is wrapped on the described rotation axis, and the two ends of described stay cord are separately fixed at the two ends of described driving stem.
Further, described driving stem two ends are equipped with pillar, and described pillar is provided with threaded hole, and described threaded hole is provided with the stretching screw of coupling, and the two ends of described stay cord respectively correspondence are fixed on these two stretching screws.
On the other hand, described power pipe bus dilation monitoring method comprises:
By holder described power pipe bus dilation monitoring device is fixed on the bus structure of power pipe bus; The driving stem of movement conversion mechanism is fixed on the movable gold utensil of described power pipe bus; The power pipe bus is heated or meets cold rear generation linear displacement and drive described driving stem; The described rotation axis of described driving stem transmission rotates, and pointer turns over certain angle with described rotation axis and shows at dial plate.
Further, the bus structure of described power pipe bus leads to two support bars, by described holder described power pipe bus dilation monitoring device is fixed on described two support bars.
Further, lead to a fork-shaped connecting bending component on the movable gold utensil of described power pipe bus, the two ends of described driving stem are fixed on the described connecting bending component.
The invention has the beneficial effects as follows: the present invention is by arranging a power pipe bus dilation monitoring device at the power pipe bus, described device amplifies the angle displacement that converts rotation axis to by movement conversion mechanism with the linear displacement of power pipe bus, and described angle displacement indicates at dial plate by pointer, makes things convenient for like this managerial personnel's accurately observation directly perceived.
Description of drawings
Fig. 1 is the side view of the power pipe bus dilation monitoring device that provides of first embodiment of the invention;
Fig. 2 is the front elevation of the power pipe bus dilation monitoring device that provides of first embodiment of the invention;
Fig. 3 is the rear view of the power pipe bus dilation monitoring device that provides of first embodiment of the invention;
Fig. 4 is the side view of the power pipe bus dilation monitoring device that provides of second embodiment of the invention;
Fig. 5 is the vertical view of the power pipe bus dilation monitoring device that provides of second embodiment of the invention;
Fig. 6 is the side view of the power pipe bus dilation monitoring device that provides of third embodiment of the invention;
Fig. 7 is the vertical view of the power pipe bus dilation monitoring device that provides of third embodiment of the invention;
Fig. 8 is the rear view of the preferred structure of the movement conversion mechanism that provides of third embodiment of the invention;
Fig. 9 is the vertical view of the preferred structure of the movement conversion mechanism that provides of third embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
For technical solutions according to the invention are described, describe below by specific embodiment.
Embodiment one:
Fig. 1-Fig. 3 is respectively side view, front elevation and the rear view of the power pipe bus dilation monitoring device that provides of first embodiment of the invention, only shows for convenience of explanation the part relevant with the embodiment of the invention.
The power pipe bus dilation monitoring device that the embodiment of the invention provides comprises manual converting mechanism 1 and the holder 4 that is used for fixing whole device, described movement conversion mechanism 1 comprises driving stem 11 and rotation axis 12, after passing a dial plate 2, described rotation axis 12 1 ends are fixed with pointer 3, when promoting described driving stem 11 displacement, described rotation axis 12 rotates together with described pointer.
During use, passing described holder 4 with bolt is fixed on whole device on the bus structure of power pipe bus, and driving stem 11 is fixed on the movable gold utensil of power pipe bus, after the power pipe bus expands with heat and contract with cold, its movable end produces linear displacement, drive described driving stem 11 and move, described driving stem 11 drives described rotation axis 12 and pointer 3 rotates, and the angle that pointer turns over can clearly indicate on dial plate.Generally speaking, because the element length of pipe bus can not be oversize, such as one long 10 meters aluminium alloy matter pipe bus, when T=10 ℃ of variation of ambient temperature Δ, its breathing amount
, the thermal linear expansion coefficient of aluminium-alloy pipe bus
So Δ L=23.91 * 10
-6* 10
4℃ (mm) * 10=and 2.391mm, so little displacement high pylon about 10 meters is difficult to observe.Suppose that rotation axis 12 diameters are d, the diameter of dial plate 2 is D, the linear breathing amount enlargement factor K=D/d of the power pipe bus of the embodiment of the invention then, if d=5mm, D=400mm, as can be known K=80.Therefore pointer is 80 times of actual linear displacement at the indicated scale variable quantity of dial plate, even power pipe bus length subtle change also can indicate on dial plate clearly, makes things convenient for managerial personnel's accurately observation directly perceived.
Still take 10 meters pipe bus as example, when T=10 ℃ of variation of ambient temperature Δ, adopt the device of present embodiment K=80, just the variable quantity of 2.39mm can be converted into the arc length variable quantity of 191.2mm, such variable quantity can very clearly be observed at the scene, in this example, adopting the sensitivity of present embodiment device is 19mm/ ℃.
Embodiment two:
Fig. 4, Fig. 5 are respectively side view and the vertical views of the power pipe bus dilation monitoring device that provides of second embodiment of the invention, only show for convenience of explanation the part relevant with the embodiment of the invention.
The power pipe bus dilation monitoring device that present embodiment provides comprises embodiment one described movement conversion mechanism 1, dial plate 2 and pointer 3, holder 4, further, with reference to Fig. 4 and Fig. 5, firm in order to guarantee rotation axis 12, described movement conversion mechanism 1 also comprises the rotary shaft rack 13 that is fixed on described dial plate 2 back sides, described rotation axis 12 1 ends pass described dial plate 2, and the other end passes described rotary shaft rack 13.Be further used as preferred embodiment, described rotary shaft rack 13 and rotation axis 12 junctions, and described dial plate 2 and rotation axis 12 junctions are equipped with bearing 14, are convenient to like this rotation axis 12 flexible rotatings.Preferably, state dial plate 2 and also be fixed with back cover 5 for the protection of described movement conversion mechanism 1.
As a kind of embodiment, in embodiments of the present invention, described movement conversion mechanism is rack tooth shaft type gear train, concrete, described driving stem 11 is tooth bar, the tooth axle of described rotation axis 12 for being meshed with described tooth bar, described tooth axle is located on the described rotary shaft rack 13, after the power pipe bus expands with heat and contract with cold and drives described tooth bar generation displacement, the described tooth axle of described rack drives rotates, because pointer length long enough, even tooth bar moves very small distance, the indicated scale variable quantity of pointer is also larger, concrete on dial plate, pointer indication must spend variable quantity be the tooth bar linear displacement K doubly, managerial personnel can intuitively accurately observe the dilation variable quantity of power pipe bus.
Embodiment three:
Fig. 6, Fig. 7 are respectively side view and the vertical views of the power pipe bus dilation monitoring device that provides of third embodiment of the invention, only show for convenience of explanation the part relevant with the embodiment of the invention.
The power pipe bus dilation monitoring device that the present embodiment that this enforcement provides provides comprises embodiment one described movement conversion mechanism 1, dial plate 2, pointer 3, holder 4, and described movement conversion mechanism 1 comprises driving stem 11, rotation axis 12, rotary shaft rack 13, bearing 14, back cover 5.
Different from embodiment two is, in embodiments of the present invention, described movement conversion mechanism is stay cord twisted axis formula gear train, concrete, described movement conversion mechanism 1 also comprises the stay cord 15 that tightly is wrapped on the described rotation axis 12, the two ends of described stay cord 15 are separately fixed at the two ends of described driving stem 11, when described driving stem 11 moves, stay cord 15 drives rotation axis 12 and rotates, and then pointer 3 is same in dial plate 2 rotations, even little displacement occurs driving stem 11, liquid can see that obvious pointer indicating graduation changes on dial plate, is convenient to managerial personnel's observation.
The present embodiment device is after working long hours, described stay cord 15 may become, and some is lax, stay cord 15 possibly can't drive described rotation axis 12 and rotate, therefore, for the ease of adjusting the tension degree of stay cord, be further used as the preferred embodiment mode, show a kind of preferred structure of movement conversion mechanism with reference to Fig. 8 and Fig. 9, described driving stem 11 two ends are equipped with pillar 16, described pillar 16 is provided with threaded hole, described threaded hole is provided with the stretching screw 17 of coupling, the two ends of described stay cord 15 respectively correspondence are fixed on these two stretching screws 17, when finding that stay cord 15 fluffs, stay cord 15 can be tightened by adjusting described stretching screw 17, guarantee that stay cord 15 can drive rotation axis 12 and rotate.
.
Embodiment four:
A kind of power pipe bus dilation monitoring method that present embodiment provides, concrete, realize monitoring by above-described embodiment with the power pipe bus dilation monitoring device that provides.Described method comprises the steps:
Step S1, by holder described power pipe bus dilation monitoring device is fixed on the bus structure of power pipe bus.
Described holder has through hole, passes described through hole by bolt, whole device is fixed on the bus structure of power pipe bus.Preferably, the bus structure of described power pipe bus leads to two support bars, by described holder described device is fixed on described two support bars, and is concrete, liquid has through hole on the described support bar, passes the through hole of described holder and support bar and tighten with bolt to get final product.
Step S2, the driving stem of movement conversion mechanism is fixed on the movable gold utensil of described power pipe bus.
The two ends of each power pipe bus unit are fixed by movable gold utensil and fixed gold utensil respectively, the fixing end of fixed gold utensil can not move, the fixing end of movable gold utensil can move, and in this step, described driving stem is fixed on the movable gold utensil of described power pipe bus.Preferably, lead to a fork-shaped connecting bending component on the movable gold utensil of described power pipe bus, the two ends of described driving stem are fixed on the described connecting bending component, all have through hole on described driving stem and the connecting bending component, are bolted.
Step S3, power pipe bus are heated or meet cold rear generation linear displacement and drive described driving stem.
The power pipe bus be heated or meet cold after, an end fixing by movable gold utensil produces displacement, movable gold utensil drives described driving stem.
Step S4, the described rotation axis of described driving stem transmission rotate, and pointer turns over certain angle with described rotation axis and indicates at dial plate.
Driving stem drives rotation axis and rotates, and this moment, pointer can turn over certain angle, and the indicated scale variable quantity of pointer is K times of power pipe bus dilation amount, and managerial personnel change the dilation variable quantity that can intuitively accurately observe the power pipe bus according to scale.
To sum up, the embodiment of the invention provides a kind of power pipe bus dilation monitoring device and method, described device is converted to angle variable quantity with the linear change amount amplification of power pipe bus, and indicate at dial plate, pointer rotates highly sensitive, even variation of ambient temperature is less, the dilation amount of power pipe bus also can be known exactly and shows, and is convenient to managerial personnel's observation.
The above only is preferred embodiment of the present invention, not in order to limiting the present invention, all any modifications of doing within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. power pipe bus dilation monitoring device, it is characterized in that, described device comprises movement conversion mechanism (1) and the holder (4) that is used for fixing whole device, described movement conversion mechanism (1) comprises driving stem (11) and rotation axis (12), after passing a dial plate (2), described rotation axis (12) one ends are fixed with pointer (3), when promoting described driving stem (11) displacement, described pointer (3) rotates together with described rotation axis (12).
2. power pipe bus dilation monitoring device as described in requiring 1 such as power, it is characterized in that, described movement conversion mechanism (1) also comprises the rotary shaft rack (13) that is fixed on described dial plate (2) back side, described rotation axis (12) one ends pass described dial plate (2), and the other end passes described rotary shaft rack (13).
3. power pipe bus dilation monitoring device as claimed in claim 2 is characterized in that, described rotary shaft rack (13) and rotation axis (12) junction, and described dial plate (2) and rotation axis (12) junction are equipped with bearing (14).
4. power pipe bus dilation monitoring device as claimed in claim 3 is characterized in that described dial plate (2) also is fixed with the back cover (5) for the protection of described movement conversion mechanism (1).
5. such as claim 2-4 power pipe bus dilation monitoring device as described in each, it is characterized in that, described driving stem (11) is tooth bar, the tooth axle of described rotation axis (12) for being meshed with described tooth bar, and described tooth axle is located on the described rotary shaft rack (13).
6. such as claim 2-4 power pipe bus dilation monitoring device as described in each, it is characterized in that, described movement conversion mechanism (1) also comprises the stay cord (15) that tightly is wrapped on the described rotation axis (12), and the two ends of described stay cord (15) are separately fixed at the two ends of described driving stem (11).
7. power pipe bus dilation monitoring device as claimed in claim 7, it is characterized in that, described driving stem (11) two ends are equipped with pillar (16), described pillar (16) is provided with threaded hole, described threaded hole is provided with the stretching screw (17) of coupling, and the two ends of described stay cord (15) respectively correspondence are fixed on these two stretching screws (17).
8. power pipe bus dilation monitoring method is characterized in that described method comprises:
To be fixed on the bus structure of power pipe bus such as each described power pipe bus dilation monitoring device of claim 1-7 by holder;
The driving stem of movement conversion mechanism is fixed on the movable gold utensil of described power pipe bus;
The power pipe bus is heated or meets cold rear generation linear displacement and drive described driving stem;
The described rotation axis of described driving stem transmission rotates, and pointer turns over certain angle with described rotation axis and indicates at dial plate.
9. method as claimed in claim 8 is characterized in that the bus structure of described power pipe bus leads to two support bars, by described holder described power pipe bus dilation monitoring device is fixed on described two support bars.
10. such as method as described in claim 8 or 9, its spy is, leads to a fork-shaped connecting bending component on the movable gold utensil of described power pipe bus, and the two ends of described driving stem are fixed on the described connecting bending component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310285483.XA CN103363879B (en) | 2013-07-09 | 2013-07-09 | A kind of power pipe bus expands and shrinks monitoring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310285483.XA CN103363879B (en) | 2013-07-09 | 2013-07-09 | A kind of power pipe bus expands and shrinks monitoring device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103363879A true CN103363879A (en) | 2013-10-23 |
| CN103363879B CN103363879B (en) | 2016-06-01 |
Family
ID=49365774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310285483.XA Expired - Fee Related CN103363879B (en) | 2013-07-09 | 2013-07-09 | A kind of power pipe bus expands and shrinks monitoring device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103363879B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763174A (en) * | 2017-12-27 | 2020-02-07 | 蔡仁杰 | Bus stretching amount detection system in high-voltage distribution system |
| CN112042704A (en) * | 2020-09-02 | 2020-12-08 | 德清县海杰包装有限公司 | Food fermentation case with fermentation volume monitoring function |
| CN114935114A (en) * | 2022-06-17 | 2022-08-23 | 华能南京燃机发电有限公司 | Long-distance industrial steam pipeline rotary compensator compensation amount indicating device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55128112A (en) * | 1979-03-28 | 1980-10-03 | Ishikawajima Harima Heavy Ind Co Ltd | Device for measuring quantity of deformation of sample |
| CN2127169Y (en) * | 1992-07-04 | 1993-02-17 | 王宪桥 | Contraction measuring instrument |
| JP2002243403A (en) * | 2001-02-09 | 2002-08-28 | Shinei Denshi Keisokki Kk | Method and device for display of crack amount of tunnel inner wall, etc. |
| CN201402144Y (en) * | 2008-12-02 | 2010-02-10 | 林昶 | Instrument displacement conversion amplifier |
| CN202676123U (en) * | 2012-05-14 | 2013-01-16 | 平高集团有限公司 | Bus corrugated pipe and telescopic length measuring device thereof |
| CN202770357U (en) * | 2012-09-14 | 2013-03-06 | 中煤科工集团重庆研究院 | Surrounding rock mobile sensor |
-
2013
- 2013-07-09 CN CN201310285483.XA patent/CN103363879B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS55128112A (en) * | 1979-03-28 | 1980-10-03 | Ishikawajima Harima Heavy Ind Co Ltd | Device for measuring quantity of deformation of sample |
| CN2127169Y (en) * | 1992-07-04 | 1993-02-17 | 王宪桥 | Contraction measuring instrument |
| JP2002243403A (en) * | 2001-02-09 | 2002-08-28 | Shinei Denshi Keisokki Kk | Method and device for display of crack amount of tunnel inner wall, etc. |
| CN201402144Y (en) * | 2008-12-02 | 2010-02-10 | 林昶 | Instrument displacement conversion amplifier |
| CN202676123U (en) * | 2012-05-14 | 2013-01-16 | 平高集团有限公司 | Bus corrugated pipe and telescopic length measuring device thereof |
| CN202770357U (en) * | 2012-09-14 | 2013-03-06 | 中煤科工集团重庆研究院 | Surrounding rock mobile sensor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110763174A (en) * | 2017-12-27 | 2020-02-07 | 蔡仁杰 | Bus stretching amount detection system in high-voltage distribution system |
| CN110763174B (en) * | 2017-12-27 | 2021-05-04 | 蔡仁杰 | Bus stretching amount detection system in high-voltage distribution system |
| CN112042704A (en) * | 2020-09-02 | 2020-12-08 | 德清县海杰包装有限公司 | Food fermentation case with fermentation volume monitoring function |
| CN114935114A (en) * | 2022-06-17 | 2022-08-23 | 华能南京燃机发电有限公司 | Long-distance industrial steam pipeline rotary compensator compensation amount indicating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103363879B (en) | 2016-06-01 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103730872B (en) | A kind of pre-hinged strain clamp with monitoring function | |
| CN103363879A (en) | Power tubular bus bar expansion and shrinkage monitoring device and power tubular bus bar expansion and shrinkage monitoring method | |
| US10944250B2 (en) | Method for setting up a transmission link for electrical energy | |
| CN103471719A (en) | GIS equipment contact temperature monitoring test apparatus | |
| CN103604520A (en) | Glass-packaged length-adjustable thermocouple | |
| CN103257266A (en) | Portable all-insulation optical-fiber current detector | |
| CN204286340U (en) | Shaft coupling calibrating installation | |
| CN203454943U (en) | Rack-and-pinion type shifter | |
| CN201117559Y (en) | SF6 gas density relay | |
| CN203464868U (en) | Hinge shaft type displacement device | |
| CN203881258U (en) | Horizontal and vertical displacement measuring apparatus used for GIS combined electric appliance air cabin | |
| CN103604518A (en) | Glass-packaged threaded length-adjustable thermocouple | |
| CN201846040U (en) | Ultra-high-voltage direct-current T-connection supporting type telescopic hardware fitting of tubular busbars | |
| CN202622631U (en) | Grounding wire hardware fitting bolt fastening wrench | |
| CN112730941B (en) | 5400kV high-precision pure-resistance lightning impulse resistance voltage divider | |
| CN205719308U (en) | A kind of New-type thermocouple | |
| CN203908546U (en) | System for monitoring inclining state of electrical equipment and bracket | |
| CN104565697B (en) | The protective cradle of a kind of X-ray emission machine and adjustable support lower limb | |
| CN202836794U (en) | Portable apparatus for measuring temperature of transmission line wire | |
| CN207711378U (en) | A kind of resistance cyclone mobile mechanism | |
| CN213874203U (en) | Transmission line overhead conductor sag measuring device | |
| CN209027711U (en) | A kind of anti-wire dropping and device for measuring force | |
| CN203785797U (en) | Wireless temperature measuring sensor | |
| CN202793239U (en) | Displacement monitoring device of high-voltage combined electric appliance expansion joint | |
| CN2629015Y (en) | Heating body monitoring threaded bolt |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160601 Termination date: 20200709 |