CN110761211A - Electrified position warning isolation frame of GIS equipment of transformer substation - Google Patents
Electrified position warning isolation frame of GIS equipment of transformer substation Download PDFInfo
- Publication number
- CN110761211A CN110761211A CN201910980939.1A CN201910980939A CN110761211A CN 110761211 A CN110761211 A CN 110761211A CN 201910980939 A CN201910980939 A CN 201910980939A CN 110761211 A CN110761211 A CN 110761211A
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- China
- Prior art keywords
- cross arm
- vertical rod
- isolation frame
- rod
- position warning
- 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.)
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- 238000002955 isolation Methods 0.000 title claims abstract description 17
- 230000000007 visual effect Effects 0.000 claims description 3
- 239000004020 conductor Substances 0.000 abstract description 5
- 239000002184 metal Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
- 238000010276 construction Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229910018503 SF6 Inorganic materials 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229960000909 sulfur hexafluoride Drugs 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/60—Upright bodies, e.g. marker posts or bollards; Supports for road signs
- E01F9/604—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings
- E01F9/608—Upright bodies, e.g. marker posts or bollards; Supports for road signs specially adapted for particular signalling purposes, e.g. for indicating curves, road works or pedestrian crossings for guiding, warning or controlling traffic, e.g. delineator posts or milestones
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/18—Means for attaching signs, plates, panels, or boards to a supporting structure
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/18—Means for attaching signs, plates, panels, or boards to a supporting structure
- G09F2007/1856—Means for attaching signs, plates, panels, or boards to a supporting structure characterised by the supporting structure
- G09F2007/186—Means for attaching signs, plates, panels, or boards to a supporting structure characterised by the supporting structure suspended, e.g. secured to the ceiling
Abstract
The invention relates to a live position warning isolation frame for GIS equipment of a transformer substation, which comprises a first cross arm, a second cross arm and a third cross arm which are arranged in parallel, wherein the first cross arm and the second cross arm are fixedly connected through a first upright rod; a third vertical rod is arranged at the lower part of the second vertical rod; the bottom of second cross arm and third cross arm top correspond and are provided with mutually supported clamp. The invention has low power consumption, convenient operation, reliability and practicability, can be carried to an overhaul site at any time, and avoids personal electric shock accidents caused when an overhaul worker climbs on the GIS equipment shell to approach an exposed high-voltage live conductor.
Description
Technical Field
The invention relates to the technical field of power transmission and transformation, in particular to a warning isolation frame for an electrified position of GIS equipment of a transformer substation.
Background
Gis (gas insulated switchgear) is a metal-enclosed switchgear that uses gas as an insulating medium, in whole or in part, and does not use air at atmospheric pressure. The GIS is a high-voltage distribution device formed by combining 7 high-voltage electric appliances including a short-circuit device, a bus, an isolating switch, a voltage transformer, a current transformer, a lightning arrester and a sleeve, wherein the GIS adopts sulfur hexafluoride (SF 6) gas with excellent insulating property and arc extinguishing property as an insulating and arc extinguishing medium, and seals all high-voltage electric appliance elements in a grounding metal cylinder, so that compared with the traditional open-type distribution device, the GIS has the advantages of small floor area, no environmental interference on the sealing of all the elements, high operation reliability, convenience in operation, long overhaul period, small maintenance workload, rapidness in installation, low operation cost, no electromagnetic interference and the like.
The GIS transformer substation has the following advantages:
(a) the floor area is small, and the floor area of the general 220 kV GIS equipment is 37 percent of that of the conventional equipment; the 110kV GIS equipment occupies about 46 percent of the floor area of conventional equipment, accords with the basic national policy of land conservation in China, and reduces expensive early-stage expenses such as land acquisition, removal, compensation and the like.
(b) Because the elements of the GIS equipment are totally enclosed, the GIS equipment is not influenced by environments such as pollution, salt fog, moisture and the like. The conductive part shell of GIS equipment shields, and ground connection is good, and radiation, electric field interference, the noise that the circuit breaker cut-off that the electric conductor produced have all been shielded by the shell, and GIS equipment is firmly installed on basic built-in fitting moreover, and the product focus is low, and intensity is high, has good shock resistance, especially is fit for using at city center or residential block. Compared with conventional equipment, the GIS can meet the requirement of urban environmental protection more easily.
(c) The SF6 gas is used as an insulating medium, the gas is not combusted, the fireproof performance is good, the insulating performance and the arc extinguishing performance are excellent, the operation is safe and reliable, the maintenance workload is low, the overhaul period is long, and the method is suitable for unattended operation of a transformer substation, and achieves the purposes of reducing personnel and improving efficiency.
(d) The construction period is short. The GIS equipment has strong universality of various elements, adopts a building block type structure, is assembled in a transportation unit and is transported to a construction site to be positioned and fixed. The workload of field installation is reduced by about 80 percent compared with the conventional equipment.
However, the lead of the high-voltage input and output terminal of the GIS is an exposed conductor, and when an overhaul person needs to work on the GIS equipment shell, a corresponding safety distance should be kept with the lead, but when the overhaul person climbs on the GIS equipment shell, the exposed high-voltage electrified conductor is very easy to approach, and personal electric shock accidents are caused.
Disclosure of Invention
The invention aims to provide a live position warning isolation frame of a GIS (gas insulated switchgear) of a transformer substation, which has low power consumption, convenient operation, reliability and practicability and can be carried to an overhaul site at any time, so as to solve the problem that in the overhaul site of the GIS of the transformer substation, an overhaul worker climbs on a GIS device shell to approach a naked high-voltage live conductor, and personal electric shock accidents are easily caused.
The invention adopts the following technical scheme:
a warning isolation frame for an electrified position of GIS equipment of a transformer substation comprises a first cross arm, a second cross arm and a third cross arm which are arranged in parallel, wherein the first cross arm and the second cross arm are fixedly connected through a first upright rod, and the second cross arm and the third cross arm are fixedly connected through a second upright rod; a third vertical rod is arranged at the lower part of the second vertical rod; the bottom of second cross arm and third cross arm top correspond and are provided with mutually supported clamp.
Further, a prompting board is arranged at the bottom of the first cross arm and connected with the first cross arm through a steel wire rope.
Furthermore, support diagonal rods are respectively arranged between the second cross arm and the second vertical rod and between the third cross arm and the third vertical rod.
Furthermore, an elastic loop bar is arranged between the second vertical rod and the third vertical rod.
Furthermore, the elastic loop bar comprises a sleeve sleeved outside the second vertical rod and the third vertical rod and a tension spring arranged in the sleeve; one end of the tension spring is fixedly connected with the bottom end of the second vertical rod, and the other end of the tension spring is fixedly connected with the top end of the third vertical rod.
Further, a lateral jacking device which is perpendicular to the loop bar and matched with the hoop is arranged on the outer side of the sleeve; the lateral jacking device comprises a jacking support rod perpendicular to the sleeve and an arc-shaped jacking block hinged with the free end of the jacking support rod.
Further, the top end of the first vertical rod is provided with a distance sensor.
Furthermore, a controller connected with the distance sensor and an audible and visual alarm device connected with the controller are arranged at the top end of the first vertical rod.
Further, a handle is arranged at the bottom end of the third vertical rod.
Further, the clamp includes the connecting rod and sets up the arc cassette tape on the connecting rod, arc cassette tape inboard is provided with insulating rubber.
The invention has the beneficial effects that: the device warns an operator in multiple directions through a notice board, a sound-light alarm device and the like, and prevents the operator from entering a dangerous area to cause electric shock danger. The device can also be detached and carried about, can be used in various occasions, and is safe and reliable.
Drawings
Fig. 1 is a schematic diagram of a charged area of a GIS device.
Fig. 2 is a schematic structural diagram of embodiment 1 of the present invention.
Fig. 3 is a schematic structural diagram of embodiment 2 of the present invention.
Fig. 4 is a schematic structural diagram of embodiment 3 of the present invention.
Fig. 5 is a schematic structural diagram of embodiment 4 of the present invention.
Fig. 6 is a schematic structural view of the clip.
The device comprises a first cross arm 1, a second cross arm 2, a third cross arm 3, a first vertical rod 4, a second vertical rod 5, a third vertical rod 6, a notice board 7, a steel wire rope 8, a support inclined rod 9, a sleeve 10, a tension spring 11, a jacking support rod 12, an arc-shaped jacking block 13, a distance sensor 14, a controller 15, a sound-light alarm device 16, a handle 17, a connecting rod 18, an arc-shaped clamping belt 19, insulating rubber 20, a GIS metal cylinder 21 and a GIS terminal 22 exposed live area.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present application unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present application, it is to be understood that the orientation or positional relationship indicated by the directional terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc., are generally based on the orientation or positional relationship shown in the drawings, and are used for convenience of description and simplicity of description only, and in the case of not making a reverse description, these directional terms do not indicate and imply that the device or element being referred to must have a particular orientation or be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the scope of the present application; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of protection of the present application is not to be construed as being limited.
Example 1
Referring to fig. 1, 2 and 6, an electrified position warning isolation frame for a substation GIS device includes a first cross arm 1, a second cross arm 2 and a third cross arm 3, which are arranged in parallel, wherein the first cross arm 1 and the second cross arm 2 are fixedly connected through a first vertical rod 4, and the second cross arm 2 and the third cross arm 3 are fixedly connected through a second vertical rod 5; a third vertical rod 6 is arranged at the lower part of the second vertical rod 5; the bottom of second cross arm 2 and the top of third cross arm 3 correspond and are provided with the clamp of mutually supporting.
The clamp includes connecting rod 18 and sets up arc cassette 19 on connecting rod 18, arc cassette inboard is provided with insulating rubber 20.
First cross arm 1 bottom is provided with notice board 7, notice board 7 passes through wire rope 8 and is connected with first cross arm 1. And supporting inclined rods 9 are respectively arranged between the second cross arm 2 and the second vertical rod 5 and between the third cross arm 3 and the third vertical rod 6. The bottom end of the third vertical rod 6 is provided with a handle 17.
The clamp card through on second cross arm and the third cross arm is put on GIS metal drum 21, and the notice board suggestion GIS terminal of first cross arm below exposes electrified region 22 to operating personnel discernment avoids being close to. The cross arm and the vertical rod can be assembled in an inserting mode, the carrying is convenient, and the assembly can be carried out during site construction. The supporting diagonal rods increase the strength of the second cross arm and the third cross arm, and the firm clamping on the GIS metal cylinder is guaranteed.
Example 2
As shown in fig. 3, the structure is the same as that of embodiment 1, except that an elastic loop bar is arranged between the second vertical rod 5 and the third vertical rod 6.
The elastic loop bar comprises a sleeve 10 sleeved outside the second vertical rod 5 and the third vertical rod 6 and a tension spring 11 arranged in the sleeve 10; one end of the tension spring 11 is fixedly connected with the bottom end of the second vertical rod 5, and the other end of the tension spring is fixedly connected with the top end of the third vertical rod 6.
The elastic loop bar can change the distance between the second cross arm and the third cross arm, so that the device can be clamped on GIS metal cylinders with different diameters, and meanwhile, the elastic loop bar increases the operation convenience of the device. When the clamp is used, the second cross arm is put on the GIS metal cylinder, the handle is pulled down by force, the spring in the elastic loop bar is stretched, the distance between the second cross arm and the third cross arm is increased, the clamp is more easily clamped on the GIS metal cylinder, and after the handle is loosened, the spring is tightened to automatically clamp the GIS metal cylinder.
Example 3
As shown in fig. 4, the top end of the first upright 4 is provided with a distance sensor 14. The top end of the first vertical rod 4 is provided with a controller 15 connected with the distance sensor 14 and an audible and visual alarm device 16 connected with the controller 15. The device can be powered by a battery, and is low in power consumption and convenient to carry.
The distance sensor can select an infrared detection sensor, and different alarm distances are set for the controller, so that the requirements of safety distances of different voltage levels are met.
When a moving human body enters a set detection range of the infrared alarm, an infrared signal of the human body is captured by the infrared detection sensor, and after the infrared signal is analyzed and judged by the controller, an action command is sent to the sound-light alarm device, and the sound-light alarm device outputs a sound-light signal to warn a maintainer about to enter a dangerous area.
Example 4
As shown in fig. 5, a lateral tightening device perpendicular to the sleeve rod and engaged with the hoop is arranged outside the sleeve 10; the lateral jacking device comprises a jacking support rod 12 which is vertical to the sleeve 10 and an arc-shaped jacking block 13 which is hinged with the free end of the jacking support rod 12.
The lateral tightening device on the sleeve and the clamp realize tightening positioning in three directions, so that the device is prevented from rotating.
The device is installed on a charged GIS equipment shell, the distance between the device and a charged GIS equipment input or output terminal is beyond safety, and the distance between the device and the charged GIS equipment input or output terminal is more than 1.5m by taking 110kV voltage class as an example. Fixed bayonet between second cross arm and the third cross arm can freely stretch out and draw back and can automatic re-setting 700-400mm, can adapt to the GIS shell diameter of all kinds of voltage classes.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. The electrified position warning isolation frame for the GIS equipment of the transformer substation is characterized by comprising a first cross arm (1), a second cross arm (2) and a third cross arm (3) which are arranged in parallel, wherein the first cross arm (1) and the second cross arm (2) are fixedly connected through a first vertical rod (4), and the second cross arm (2) and the third cross arm (3) are fixedly connected through a second vertical rod (5); a third vertical rod (6) is arranged at the lower part of the second vertical rod (5); the bottom of the second cross arm (2) and the top of the third cross arm (3) are correspondingly provided with mutually matched clamps.
2. The electrified position warning isolation frame of GIS equipment of transformer substation of claim 1, characterized in that, first cross arm (1) bottom is provided with notice board (7), notice board (7) are connected with first cross arm (1) through wire rope (8).
3. The substation GIS device live position warning isolation frame according to claim 2, characterized in that a support diagonal bar (9) is respectively arranged between the second cross arm (2) and the second vertical bar (5) and between the third cross arm (3) and the third vertical bar (6).
4. The live position warning isolation frame for the substation GIS equipment according to claim 3, characterized in that an elastic loop bar is arranged between the second vertical rod (5) and the third vertical rod (6).
5. The substation GIS device electrified position warning isolation frame according to claim 4, characterized in that the elastic loop bar comprises a sleeve (10) sleeved outside the second vertical rod (5) and the third vertical rod (6) and a tension spring (11) arranged in the sleeve (10); one end of the tension spring (11) is fixedly connected with the bottom end of the second vertical rod (5), and the other end of the tension spring is fixedly connected with the top end of the third vertical rod (6).
6. The electrified position warning isolation frame of the transformer substation GIS equipment according to claim 5, characterized in that a lateral tightening device which is perpendicular to the sleeve rod and matched with the clamp is arranged outside the sleeve (10); the lateral jacking device comprises a jacking support rod (12) which is vertical to the sleeve (10) and an arc-shaped jacking block (13) which is hinged with the free end of the jacking support rod (12).
7. The substation GIS device live position warning isolation frame according to claim 1, characterized in that the top end of the first upright (4) is provided with a distance sensor (14).
8. The substation GIS device electrified position warning isolation frame according to claim 7, characterized in that the top end of the first upright rod (4) is provided with a controller (15) connected with the distance sensor (14) and an audible and visual alarm device (16) connected with the controller (15).
9. The live position warning isolation frame for the substation GIS equipment according to claim 1, characterized in that a handle (17) is arranged at the bottom end of the third upright rod (6).
10. The electrified position warning isolation frame of transformer substation GIS equipment according to claim 1, characterized in that the clamp includes a connecting rod (18) and an arc-shaped clamp band (19) arranged on the connecting rod (18), and an insulating rubber (20) is arranged on the inner side of the arc-shaped clamp band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980939.1A CN110761211B (en) | 2019-10-16 | 2019-10-16 | Electrified position warning isolation frame of GIS equipment of transformer substation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910980939.1A CN110761211B (en) | 2019-10-16 | 2019-10-16 | Electrified position warning isolation frame of GIS equipment of transformer substation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110761211A true CN110761211A (en) | 2020-02-07 |
| CN110761211B CN110761211B (en) | 2021-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910980939.1A Active CN110761211B (en) | 2019-10-16 | 2019-10-16 | Electrified position warning isolation frame of GIS equipment of transformer substation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111667754A (en) * | 2020-07-27 | 2020-09-15 | 广东电网有限责任公司 | Operation signboard suspending and fixing device |
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| CN201681575U (en) * | 2010-05-05 | 2010-12-22 | 山东电力集团公司超高压公司 | On-site safety measure warning device of GIS equipment |
| CN204376279U (en) * | 2015-02-13 | 2015-06-03 | 中国长江三峡集团公司 | Hydroelectric station GIS bus auxiliary repair adjustable supporting device |
| CN106548701A (en) * | 2016-12-09 | 2017-03-29 | 徐玉炜 | It is a kind of can auto Deformation signpost |
| CN206917394U (en) * | 2017-04-25 | 2018-01-23 | 国网辽宁省电力有限公司丹东供电公司 | A kind of saddle-shape safety shelter device for GIS combination electric appliance |
| CN208044977U (en) * | 2018-03-21 | 2018-11-02 | 国网江苏省电力有限公司检修分公司 | A kind of alarming device applied in GIS device |
| CN109629904A (en) * | 2018-12-13 | 2019-04-16 | 国网山东省电力公司潍坊供电公司 | A kind of GIS safety warning fence |
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2019
- 2019-10-16 CN CN201910980939.1A patent/CN110761211B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201681575U (en) * | 2010-05-05 | 2010-12-22 | 山东电力集团公司超高压公司 | On-site safety measure warning device of GIS equipment |
| CN204376279U (en) * | 2015-02-13 | 2015-06-03 | 中国长江三峡集团公司 | Hydroelectric station GIS bus auxiliary repair adjustable supporting device |
| CN106548701A (en) * | 2016-12-09 | 2017-03-29 | 徐玉炜 | It is a kind of can auto Deformation signpost |
| CN206917394U (en) * | 2017-04-25 | 2018-01-23 | 国网辽宁省电力有限公司丹东供电公司 | A kind of saddle-shape safety shelter device for GIS combination electric appliance |
| CN208044977U (en) * | 2018-03-21 | 2018-11-02 | 国网江苏省电力有限公司检修分公司 | A kind of alarming device applied in GIS device |
| CN109629904A (en) * | 2018-12-13 | 2019-04-16 | 国网山东省电力公司潍坊供电公司 | A kind of GIS safety warning fence |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111667754A (en) * | 2020-07-27 | 2020-09-15 | 广东电网有限责任公司 | Operation signboard suspending and fixing device |
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| CN110761211B (en) | 2021-07-30 |
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Application publication date: 20200207 Assignee: Hebei Huawan Electronic Technology Co.,Ltd. Assignor: STATE GRID HEBEI ELECTRIC POWER Co.,Ltd. BAODING POWER SUPPLY BRANCH Contract record no.: X2024980002058 Denomination of invention: Substation GIS equipment live position warning isolation frame Granted publication date: 20210730 License type: Common License Record date: 20240209 |