CN110364327A - Converter power transformer with fire plant - Google Patents
Converter power transformer with fire plant Download PDFInfo
- Publication number
- CN110364327A CN110364327A CN201910701282.0A CN201910701282A CN110364327A CN 110364327 A CN110364327 A CN 110364327A CN 201910701282 A CN201910701282 A CN 201910701282A CN 110364327 A CN110364327 A CN 110364327A
- Authority
- CN
- China
- Prior art keywords
- scalable
- isolated tube
- transformer
- fire
- converter
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 238000007789 sealing Methods 0.000 claims abstract description 14
- 244000309464 bull Species 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 abstract description 20
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 4
- 239000001301 oxygen Substances 0.000 abstract description 4
- 229910052760 oxygen Inorganic materials 0.000 abstract description 4
- 230000008859 change Effects 0.000 description 7
- 238000004880 explosion Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 206010000369 Accident Diseases 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000003595 mist Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C3/00—Fire prevention, containment or extinguishing specially adapted for particular objects or places
- A62C3/16—Fire prevention, containment or extinguishing specially adapted for particular objects or places in electrical installations, e.g. cableways
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
Abstract
The present invention relates to disclose a kind of converter power transformer with fire plant, including transformer, converter transformer sleeve, interface one is welded at the top of transformer, left side described in transformer is respectively welded interface two and interface three, respectively screw thread is connected in the external cylindrical surface of converter transformer sleeve to the inner wall of interface one, interface two and interface three, converter transformer sleeve is equipped with scalable isolated tube on the outside of the cylindrical surface of bottom, and the bottom of scalable isolated tube offers socket.The converter power transformer with fire plant drives loop bar to move upwards by starting electric pushrod, to drive the telescopic end of scalable isolated tube to move upwards, the contact with oxygen is reduced, to reduce burning velocity, and then steel wire is driven to pull up, because conduit is blocked motionless by fixture, and then pull out sealing ring, INERGEN gas enters the inside of scalable isolated tube, puts out a fire, automatically fire can be knocked out, will not go out and needs manually to start to put out a fire.Suitable for converter station.
Description
Technical field
The present invention relates to converter power transformer field, specially a kind of converter power transformer with fire plant.
Background technique
Insulating sleeve is the weak link of converter power transformer safety, and bushing explosion fire accident is in transformer fire accident
Account for very big ratio.Bushing explosion is on fire mainly since there are the inside such as unreasonable structural design and manufacturing process defect for casing
Hidden danger is run under long-term extra-high voltage, and hidden danger gradually appears and constantly expands, and ultimately causes bushing explosion and oil spout is caused to rise
Fire.Secondly it is influenced by natural environment and climate, bobbin seal reduces or surface contamination causes insulation decline to cause insulation breakdown
Bushing explosion is on fire.In addition, there are also the generation casings because of casing accident caused by installing or overhauling the reasons such as improper once to explode
The serious transformer body that can trigger of safety that fire directly jeopardizes transformer body is on fire, destroys its internal structure, causes weight
Big economic loss.
The special equipments such as converter power transformer, the converter valve of converter station, not only involve great expense, and equipment arrangement is unique, such as
Fruit is designed according to existing design for fire protection specification completely, then there is significantly defects.Such as: converter power transformer it is through walls
Conduit crossing firewall connects converter valve, and the peace on fire from explosion that will all threaten converter valve once occurs for transformer or wall bushing
Entirely, and the network side sleeve of converter power transformer is on fire from explosion, cannot such as be put out in time, transformer body will be caused on fire, because
This, fixed water spray safeguard measure should all be arranged in the casing of converter power transformer.But according to " water spray fire extinguishing system design rule
Model " the 3.2.5.2 articles: the regulation of " bushing should not directly be sprayed to by protecting the water mist of transformer top ", casing are not sprayed in water
Within the protection scope of mist system in practical applications, after a converter power transformer network side sleeve of certain converter station is on fire from explosion,
Although water injection system movement in time, water hydraulic pressure are sufficient, transformer body is effectively protected, and casing still continues
Burning, fighting personnel must not oneself have to climb up transformer carry out manual extinguishing, just extinguish the blaze.So the existing converter station change of current
The fire fighting mode for becoming casing is not very intelligent.
Summary of the invention
The object of the present invention is to provide a kind of converter power transformers with fire plant, achieve the purpose that self-extinguishing.
For the purpose for realizing above-mentioned self-extinguishing, the invention provides the following technical scheme: a kind of change of current with fire plant
Transformer, including transformer and converter transformer sleeve are welded with interface one, left end described in the transformer at the top of the transformer
Face is respectively welded interface two and interface three, and respectively screw thread is connected in change of current change to the inner wall of the interface one, interface two and interface three
The external cylindrical surface of casing, cylindrical surface outer sheath of the converter transformer sleeve close to bottom is equipped with scalable isolated tube, described to stretch
The bottom of contracting isolated tube offers socket, and the scalable isolated tube passes through the external cylindrical surface of socket and converter transformer sleeve
Cooperation is fixedly attached on the external cylindrical surface of converter transformer sleeve, and the front of the scalable isolated tube offers sets of holes, it is described can
The inside of expansion isolating pipe, which corresponds to, is welded with symmetrical fixture on the outside of the converter transformer sleeve；The right end of the transformer is equipped with
INERGEN gas fire-fighting steel cylinder is communicated with bull connector at the gas outlet of the INERGEN gas fire-fighting steel cylinder, described more
Head connector is communicated with conduit, the one end of the conduit far from bull connector far from one end of INERGEN gas fire-fighting steel cylinder
Be connected in fixture across sets of holes and gas outlet upward, the conduit seals at the inner wall of gas outlet and is connected with sealing ring,
Steel wire is connected at the top of the sealing ring, the steel wire is connected to scalable isolated tube top wall surface far from one end of sealing ring
On, the position that each exchange becomes casing is corresponded on the transformer is equipped with an electric pushrod, the electric pushrod
Top is welded with loop bar, and the lantern ring end of the loop bar is fixedly attached to the cylinder of corresponding scalable one section of isolated tube top
On face.
Preferably, the material that the scalable isolated tube uses has fire line.
Preferably, the structure of the scalable isolated tube has retractility.
Preferably, the quantity of the scalable isolated tube is three.
Preferably, it is all three that the quantity of the connector of the bull connector is equal with the quantity of scalable isolated tube.
Preferably, sets of holes and be three with the quantity of the components inside scalable isolated tube.
Preferably, the INERGEN gas fire-fighting steel cylinder is normally open.
The present invention provides a kind of converter power transformers with fire plant.Have following the utility model has the advantages that electronic by starting
Push rod drives loop bar to move upwards, so that the telescopic end of scalable isolated tube be driven to move upwards, reduces the contact with oxygen,
To reduce burning velocity, and then steel wire is driven to pull up, because conduit is blocked motionless by fixture, and then sealing ring is drawn
Out, INERGEN gas enters the inside of scalable isolated tube, puts out a fire, and can automatically knock out fire, will not go out and need
It manually to start to put out a fire.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the left view of transformer of the present invention with the components in addition to INERGEN gas fire-fighting steel cylinder；
Fig. 3 is the sectional view of scalable isolated tube.
In figure: 1 transformer, 2 interfaces one, 3 interfaces two, 4 interfaces three, 5 scalable isolated tubes, 6 sets of holes, 7 sockets, 8 folders
Tool, 9 conduits, 10 sealing rings, 11 steel wires, 12 converter transformer sleeves, 13INERGEN gas fire-fighting steel cylinder, 14 bull connectors, 15 electricity
Dynamic push rod, 16 loop bars.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
It please refers to shown in Fig. 1-3, the present invention provides a kind of technical solution: a kind of converter power transformer with fire plant, packet
Transformer 1, converter transformer sleeve 12 are included, the top of transformer 1 is welded with interface 1, and 1 left side of transformer is respectively welded interface
23 and interface 34, respectively screw thread is connected in the outside cylinder of converter transformer sleeve 12 to the inner wall of interface 1, interface 23 and interface 34
Face, cylindrical surface outer sheath of the converter transformer sleeve 12 close to bottom are equipped with scalable isolated tube 5, the material that scalable isolated tube 5 uses
Material has fire line, and the structure of scalable isolated tube 5 has retractility, and the quantity of scalable isolated tube 5 is three, it is scalable every
Bottom from pipe 5 offers socket 7, and scalable isolated tube 5 is matched by socket 7 and the external cylindrical surface of converter transformer sleeve 12
Conjunction is fixedly attached on the external cylindrical surface of converter transformer sleeve 12, and the front of scalable isolated tube 5 offers sets of holes 6, sets of holes 6 and
Quantity with the components in scalable 5 the inside of isolated tube is three, and the inside of scalable isolated tube 5 corresponds to converter transformer sleeve
12 outside is welded with symmetrical fixture 8；The right end of transformer 1 is equipped with INERGEN gas fire-fighting steel cylinder 13, INERGEN gas
13 bottles of fire-fighting steel cylinder are normally open, are communicated with bull connector 14, bull at the gas outlet of INERGEN gas fire-fighting steel cylinder 13
The quantity of the connector of connector 14 equal with the quantity of scalable isolated tube 5 is all three, and bull connector 14 is separate
One end of INERGEN gas fire-fighting steel cylinder 13 is communicated with conduit 9, and the one end of conduit 9 far from bull connector 14 is blocked across sets of holes 6
Connect in fixture 8 and gas outlet upward, fixture 8 includes round metal ring flat-plate and elastic apron, and the outer ring of round metal ring flat-plate is welded on
On the inner wall of scalable isolated tube 5, the outer ring of elastic apron is equipped with card slot, and the outer ring of elastic apron is installed on gold by card slot
On the inner ring for belonging to Circular Plate, the inner ring diameter of elastic apron is matched with the outer diameter of conduit 9, inner wall of the conduit 9 close to gas outlet
Place's sealing is connected with sealing ring 10, and the top of sealing ring 10 is connected with steel wire 11, the one end of steel wire 11 far from 10 top of sealing ring
It is welded on scalable 5 top wall surface of isolated tube, the position that each exchange becomes casing 12 is corresponded on transformer 1 and is equipped with an electricity
Dynamic push rod 15, the top of electric pushrod 15 are welded with loop bar 16, the lantern ring end of loop bar 16 be fixedly attached to it is corresponding it is scalable every
On cylindrical surface from 5 top of pipe, one section.By starting electric pushrod 15, loop bar 16 is driven to move upwards, so that driving can
The telescopic end of expansion isolating pipe 5, which moves upwards, covers exchange change casing 12, to reduce the contact for exchanging and becoming casing 12 with oxygen, from
And reduce burning velocity；Meanwhile also will drive steel wire 11 and pull up because conduit 9 blocked by fixture 8 it is motionless, and then will be close
Seal 10 pulls out, and INERGEN gas enters the inside of scalable isolated tube 5, puts out a fire, and can automatically knock out fire, will not
It does not go out and needs manually to start to put out a fire.
Working principle: in use, by starting electric pushrod 15, loop bar 16 is driven to move upwards, to drive scalable
The telescopic end of isolated tube 5, which moves upwards, covers exchange change casing 12, reduces the contact for covering exchange change casing 12 with oxygen, thus
Reduce burning velocity；Meanwhile also will drive steel wire 11 and pull up because conduit 9 blocked by fixture 8 it is motionless, and then will sealing
Circle 10 pulls out, and INERGEN gas enters the inside of scalable isolated tube 5, puts out a fire, and can automatically knock out fire, will not go out
Do not fall and needs manually to start to put out a fire.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of converter power transformer with fire plant, including transformer (1) and converter transformer sleeve (12), the transformer (1)
Top be welded with interface one (2), the left side of the transformer (1) is respectively welded interface two (3) and interface three (4), institute
Stating the inner wall of interface one (2), the interface two (3) and the interface three (4), respectively screw thread is connected in the converter transformer sleeve
(12) on external cylindrical surface, it is characterised in that: cylindrical surface outer sheath of the converter transformer sleeve (12) close to bottom is equipped with and can stretch
Contracting isolated tube (5) offers sets of holes (6) on the scalable isolated tube (5), and the inside of the scalable isolated tube (5) is corresponding
Symmetrical fixture (8) are welded on the outside of the converter transformer sleeve (12)；The right end of the transformer (1) is equipped with INERGEN gas
Body fire-fighting steel cylinder (13) is communicated with bull connector (14) at the gas outlet of the INERGEN gas fire-fighting steel cylinder (13), described
Bull connector (14) is communicated with conduit (9) far from one end of the INERGEN gas fire-fighting steel cylinder (13), the conduit (9)
One end far from the bull connector (14) pass through the sets of holes (6) be connected in the fixture (8) and gas outlet upward, institute
It states to seal at the inner wall of conduit (9) close gas outlet and be connected with sealing ring (10), be connected with steel at the top of the sealing ring (10)
Silk (11), the steel wire (11) are connected to scalable isolated tube (5) top wall surface far from the one end of the sealing ring (10)
On；The position that each exchange becomes casing (12) is corresponded on the transformer (1) is equipped with an electric pushrod (15), it is described
It is welded at the top of electric pushrod (15) loop bar (16), the lantern ring end of the loop bar (16) is fixedly attached to corresponding described can stretch
On the cylindrical surface of one section of contracting isolated tube (5) top.
2. the converter power transformer according to claim 1 with fire plant, it is characterised in that: the scalable isolated tube
(5) bottom offers socket (7), and the scalable isolated tube (5) passes through the socket (7) and the converter transformer sleeve
(12) cooperation of external cylindrical surface is fixedly attached on the external cylindrical surface of the converter transformer sleeve (12).
3. the converter power transformer according to claim 1 with fire plant, it is characterised in that: the sets of holes (6) are provided with
On the front side wall of the scalable isolated tube (5).
4. the converter power transformer according to claim 1 with fire plant, it is characterised in that: the sets of holes (6) are provided with
On the cylindrical surface of one section of lowermost end of the scalable isolated tube (5).
5. the converter power transformer according to claim 1 with fire plant, it is characterised in that: the scalable isolated tube
(5) material used has fire line.
6. the converter power transformer according to claim 1 with fire plant, it is characterised in that: the scalable isolated tube
(5) structure has retractility.
7. the converter power transformer according to claim 1 with fire plant, it is characterised in that: the scalable isolated tube
(5) quantity is three.
8. the converter power transformer according to claim 1 with fire plant, it is characterised in that: the bull connector (14)
Connector quantity it is equal with the quantity of scalable isolated tube (5) and be all three.
9. the converter power transformer according to claim 1 with fire plant, it is characterised in that: the sets of holes (6) and with
The quantity of components inside the scalable isolated tube (5) is three.
10. the converter power transformer according to claim 1 with fire plant, it is characterised in that: the INERGEN gas disappears
Anti- steel cylinder (13) bottle is normally open.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910701282.0A CN110364327B (en) | 2019-07-31 | 2019-07-31 | Converter transformer with fire-fighting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910701282.0A CN110364327B (en) | 2019-07-31 | 2019-07-31 | Converter transformer with fire-fighting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110364327A true CN110364327A (en) | 2019-10-22 |
| CN110364327B CN110364327B (en) | 2024-07-19 |
Family
ID=68222791
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910701282.0A Active CN110364327B (en) | 2019-07-31 | 2019-07-31 | Converter transformer with fire-fighting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110364327B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100071376A1 (en) * | 2008-09-24 | 2010-03-25 | Siemens Energy, Inc. | Combustor Assembly in a Gas Turbine Engine |
| CN105999600A (en) * | 2016-07-12 | 2016-10-12 | 快达消防科技有限公司 | Shower nozzle for deck |
| CN106384654A (en) * | 2016-10-19 | 2017-02-08 | 中国南方电网有限责任公司超高压输电公司广州局 | Device and method for improving BOX-IN structure used for reducing noises of converter transformer put into operation |
| CN206431326U (en) * | 2016-12-26 | 2017-08-22 | 江苏盈科通信科技有限公司 | A kind of rodent-resistant cable of service life length |
| CN207412574U (en) * | 2017-09-03 | 2018-05-29 | 陈春女 | A kind of fire extinguishing apparatus used in fire protection engineering |
| CN208737976U (en) * | 2018-08-15 | 2019-04-12 | 天津润川电气设备科技有限公司 | Fire-proof oil-immersed power transformer |
| CN109701182A (en) * | 2018-12-23 | 2019-05-03 | 中国电建集团福建省电力勘测设计院有限公司 | Novel flexible DC converter based on two from three mode becomes fire-fighting system |
| CN209067274U (en) * | 2018-11-30 | 2019-07-05 | 田军 | A kind of underground coal mine air dustproof atomizer |
| CN210245212U (en) * | 2019-07-31 | 2020-04-03 | 国家电网有限公司 | Converter transformer with fire-fighting device |
-
2019
- 2019-07-31 CN CN201910701282.0A patent/CN110364327B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100071376A1 (en) * | 2008-09-24 | 2010-03-25 | Siemens Energy, Inc. | Combustor Assembly in a Gas Turbine Engine |
| CN105999600A (en) * | 2016-07-12 | 2016-10-12 | 快达消防科技有限公司 | Shower nozzle for deck |
| CN106384654A (en) * | 2016-10-19 | 2017-02-08 | 中国南方电网有限责任公司超高压输电公司广州局 | Device and method for improving BOX-IN structure used for reducing noises of converter transformer put into operation |
| CN206431326U (en) * | 2016-12-26 | 2017-08-22 | 江苏盈科通信科技有限公司 | A kind of rodent-resistant cable of service life length |
| CN207412574U (en) * | 2017-09-03 | 2018-05-29 | 陈春女 | A kind of fire extinguishing apparatus used in fire protection engineering |
| CN208737976U (en) * | 2018-08-15 | 2019-04-12 | 天津润川电气设备科技有限公司 | Fire-proof oil-immersed power transformer |
| CN209067274U (en) * | 2018-11-30 | 2019-07-05 | 田军 | A kind of underground coal mine air dustproof atomizer |
| CN109701182A (en) * | 2018-12-23 | 2019-05-03 | 中国电建集团福建省电力勘测设计院有限公司 | Novel flexible DC converter based on two from three mode becomes fire-fighting system |
| CN210245212U (en) * | 2019-07-31 | 2020-04-03 | 国家电网有限公司 | Converter transformer with fire-fighting device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110364327B (en) | 2024-07-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201918621U (en) | Installation tool for hook type ground wire | |
| CN103730834A (en) | Gas injection type parallel gap device | |
| CN110364327A (en) | Converter power transformer with fire plant | |
| CN103480102B (en) | Dry powder extinguishing installation in tunnel on intelligent patrol detection equipment and method | |
| CN101083164B (en) | Lightning arrester | |
| CN111790089B (en) | Fire extinguishing system and method for in-operation extra-high voltage converter station and in-operation extra-high voltage converter station | |
| CN210245212U (en) | Converter transformer with fire-fighting device | |
| CN107606597B (en) | Sleeve seat type water spraying desuperheater | |
| CN103895869A (en) | Anti-lightning ventilation pipeline structure of fuel tank of aircraft | |
| CN103050239A (en) | Thread type lead-out device of transformer bushing end screen signal | |
| CN217246358U (en) | Fire-retardant filter convenient to connect | |
| CN109559879A (en) | A kind of ultra-high/extra-high voltage gas-insulated transformer class casing with explosion-proof disaster mitigation function | |
| CN206148852U (en) | Post insulators and arrester maintenance safety belt stores pylon | |
| CN202188303U (en) | Anti-disassembling device of liquefied gas cylinder valve | |
| CN201324454Y (en) | Safety belt hanger | |
| CN210447916U (en) | Quick replacement formula exhaust spark arrester | |
| CN104795204A (en) | Built-in nitrogen injection device of oil-immersed transformer | |
| CN220871433U (en) | Flame spraying mechanism of gas sintering furnace | |
| CN201704282U (en) | Electrical desalter high voltage input device | |
| CN216774233U (en) | Flexible connecting piece for lower bus and inlet and outlet wire sleeve of environment-friendly cabinet | |
| CN201522894U (en) | High-voltage insulated sleeve of electric dehydrator | |
| CN209333952U (en) | A kind of sulfur hexafluoride gas-filled filter device | |
| CN105079997A (en) | Superfine powder extinguishing system for locomotive | |
| CN216843599U (en) | Three-way water pressure device | |
| CN219958732U (en) | Oil-discharging and nitrogen-injecting fire extinguishing device for oil immersed transformer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |