CN107749719A - Converter valve screening electrodes - Google Patents
Converter valve screening electrodes Download PDFInfo
- Publication number
- CN107749719A CN107749719A CN201710882535.XA CN201710882535A CN107749719A CN 107749719 A CN107749719 A CN 107749719A CN 201710882535 A CN201710882535 A CN 201710882535A CN 107749719 A CN107749719 A CN 107749719A
- Authority
- CN
- China
- Prior art keywords
- converter valve
- probe portion
- screening electrodes
- base
- electrodes according
- 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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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
Abstract
The present invention relates to flexible direct-current transmission field, and in particular to a kind of converter valve screening electrodes.Converter valve screening electrodes include being used for the base being sealingly fitted in the electrode mounting hole of converter valve cold water pipe, base is provided with the probe portion for being used for being inwardly inserted into converter valve cold water pipe, the outer surface of probe portion and probe portion are respectively equipped with anticorrosion conductive layer with base junction, and base portion is provided with the outer conductive connection part being conductively connected with probe portion away from the outer end of probe portion.The converter valve of the present invention is respectively equipped with anticorrosion conductive layer with the junction of the probe portion outer surface of screening electrodes structure and base and probe portion, avoid and electrochemical corrosion occurs when being contacted with water, so as to ensure that probe portion is securely attached on base, prevent probe portion from coming off.
Description
Technical field
The present invention relates to flexible direct-current transmission field, and in particular to a kind of converter valve screening electrodes.
Background technology
Converter valve equipment is the key equipment in HVDC transmission system, the direct shadow of operational reliability of converter valve equipment
Ring the job stability of DC transmission system.The design of water-cooling system is a very important part in converter valve global design,
The effect of water-cooling system is that all heats caused by converter valve are all dissipated, and the temperature of converter valve is maintained at relatively low level.
Because cooling water has certain electrical conductivity, corresponding leakage current, and the electricity of cooling water can be produced in cooling water
Conductance variation with temperature and change, so the size of electric current can also vary with temperature.In order to prevent leakage current to aluminium radiator
Electrochemical corrosion is caused, the reasonable Arrangement platinum electrode generally in water pipe, for controlling the Potential distribution in cooling water, platinum is inertia
Material, platinum electrode will not due to leakage current and be lost, will not thus produce harmful electrode corrosion, can avoid electric leakage electricity
Flow and the surface of aluminium radiator is caused to corrode, so as to realize the running protection to converter valve.
As shown in figure 1, in the prior art flexible direct current transmission converter valve water route screening electrodes structure be typically at one not
Rust steel base 10 secures a very thin platinum pin 20 above, and this screening electrodes structure has a following drawback, and first：Stainless steel
Base can be because stainless steel be corroded and causes platinum pin to come off with platinum pin junction；Second：Stainless steel base, which is corroded, to be caused to occur
Drainage；3rd platinum cost is higher.
The content of the invention
It is an object of the invention to provide a kind of converter valve screening electrodes, to solve stainless steel base quilt in the prior art
Corrosion causes the technical problem that platinum pin comes off.
To achieve the above object, converter valve provided by the present invention is adopted the following technical scheme that with screening electrodes：Converter valve
With screening electrodes, including the base for being sealingly fitted in the electrode mounting hole of converter valve cold water pipe, base, which is provided with, to be used for
The probe portion being inwardly inserted into the cold water pipe, the outer surface of the probe portion and probe portion are distinguished with base junction
Provided with anticorrosion conductive layer, base portion is provided with what is be conductively connected with the probe portion away from the outer end of the probe portion
Outer conductive connection part.
The beneficial effects of the invention are as follows：The outer surface and probe portion of the probe portion of the converter valve screening electrodes of the present invention
Divide and be respectively equipped with anticorrosion conductive layer with base junction, avoid it that electrochemical corrosion occurs when being contacted with water, so as to ensure to visit
Pin part can be securely attached on base, prevent that probe portion comes off from base caused by electrochemical corrosion.
Further, the base includes middle the matrix that is wholely set with probe portion and is set in intermediate base in vitro
For the injection set being sealingly fitted in the electrode mounting hole.
Further, the middle matrix is provided with anticorrosion conductive layer with the injection corresponding outer peripheral face of set.
Further, it is provided with concavo-convex connected structure between the interior jacket wall of the injection set and the outer peripheral face of middle matrix.
Further, the concavo-convex connected structure include being arranged on the interior jacket wall of the injection set and middle matrix it is outer
The annular protrusion and annular groove of the identical grafting of correspondence on side face.
Further, the middle matrix and probe portion are made by stainless steel material, be arranged on probe portion and in
Between anticorrosion conductive layer on matrix be plating platinum layer.
Matrix and probe portion set plating platinum layer among made of stainless steel material, reduce converter valve in the present invention and use
The manufacturing cost of screening electrodes.
Further, the outer conductive connection part is the hole shape conductive connection part that the external end face of intermediate base is provided with.
Further, the annular faced outwardly at the outer end aperture of the probe portion provided with block of the injection set
Block step, the annular block step are used to form block cooperation with the step surface that the intermediate base is held in vitro.
Further, the injection tackling has for the outer spiral shell with the internal thread segment threaded engagement in the electrode mounting hole
Line section.
Further, it is convexly equipped with the overcoat wall of the injection set on the outside of external thread section for top pressure in the change of current
Annular gear edge on valve cold water pipe, the side axially towards the converter valve cold water pipe on annular gear edge, which is provided with, to be used to pacify
Fill the mounting groove of sealing ring.
Brief description of the drawings
Fig. 1 is the structural representation of converter valve screening electrodes in the prior art；
Fig. 2 is the structural representation of the embodiment 1 of converter valve screening electrodes provided by the present invention；
Fig. 3 is the structural representation of the embodiment 2 of converter valve screening electrodes provided by the present invention.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The embodiment 1 of the converter valve screening electrodes of the present invention：
As shown in Fig. 2 a kind of converter valve screening electrodes, including for being sealingly fitted to the electrode mounting hole of converter valve cold water pipe
In base, base, which is provided with, to be used to be inwardly inserted into probe portion 3 in cold water pipe, the outer surface and probe portion of probe portion 3
Point be respectively equipped with anticorrosion conductive layer with base junction, base portion away from the outer end of probe portion 3 provided with and probe portion
Divide the outer conductive connection part 11 being conductively connected.
Base includes middle the matrix 1 that is wholely set with probe portion 3 and is set in that intermediate base is external to be used to seal and fill
Fit over the injection set 2 in electrode mounting hole.
Middle matrix 1 and probe portion 3 are integrally formed, and both of which is made up of stainless steel material, and middle matrix 1 and probe
The outer surface of part 3 is coated with platinum layer, because platinum is inert metal, electrochemical corrosion will not occur when being contacted with water, avoid
The phenomenon that probe portion comes off caused by corrosion.In addition, the cost of screening electrodes is also reduced using platinum plating technique.
Middle matrix 1 is provided with the outer conductive connection part 11 being conductively connected with probe portion away from the outer end of probe portion 3,
Outer conductive connection part 11 is the hole shape conductive connection part that the middle outer face of matrix 1 is provided with, and outer conductive connection part 11 is used to connect
On grounding apparatus or other conductive equipments, to shift the leakage current in converter valve inner cold water road, prevent leakage current from being dissipated to aluminium
Hot device causes electrochemical corrosion.
Injection set 2 is included for outer with the internal thread segment threaded engagement in the electrode mounting hole on converter valve inner cold water pipe
The annular of thread segment 21 and projection in the outside of external thread section on the overcoat wall of injection set is kept off along 22, and annular gear is used to push up along 22
It is pressed on converter valve cold water pipe, annular gear is provided with mounting groove 23 along 22 side axially towards converter valve cold water pipe, pacifies
Sealing ring 4 is installed, sealing ring 4, which is installed in mounting groove 23, forms sealing structure with base and converter valve cold water in tankage 23
Sealing is formed between the electrode mounting hole of pipe, prevents leak.
Concavo-convex connected structure is provided between the interior jacket wall of injection set 2 and the outer peripheral face of middle matrix 1, specifically, injection
The interior jacket wall of set is provided with circumferentially distributed annular protrusion 24, and the outer peripheral face of middle matrix 2 is provided with right with annular protrusion 24
Should be coincide the annular groove 12 of grafting.
Injection set 2 is provided with the annular block step 25 that block faces outwardly, annular at the outer end aperture of probe portion 3
Block step 25 is used to form block cooperation with the step surface 13 of the middle outer end of matrix 1, to ensure injection set 2 and middle matrix 1
The fastness of connection.
In the present embodiment, matrix is coated with platinum layer with probe portion outer surface among stainless steel, in other embodiments,
Other inert metals can be plated, such as gold, as long as after silver with water electrochemical reaction or painting do not occur for its activity
Anticorrosion electrically-conducting paint in middle matrix Yu probe portion outer surface.
In the present embodiment, sealing ring, which is arranged in the mounting groove of base, forms sealing, in other embodiments, can also
Using other sealing structures.
In the present embodiment, the outer conductive connection part being connected on base with conducting end is hole shape conductive connection part, other
It is such as raised in embodiment or other structures.
In the present embodiment, matrix is integrally formed with probe portion among stainless steel, in other embodiments or
Split is fixed.
The embodiment 2 of the converter valve screening electrodes of the present invention：
As shown in figure 3, the injection set 2 in converter valve screening electrodes in the present embodiment also include it is inner right with middle matrix 1
The end cap portions 26 answered, end cap portions 26 are provided with the perforation 27 passed through for probe portion 3, and other structures are corresponding in embodiment 1
Structure is identical, will not be repeated here.
Claims (10)
1. converter valve screening electrodes, including the base for being sealingly fitted in the electrode mounting hole of converter valve cold water pipe, bottom
Seat is provided with the probe portion for being used for being inwardly inserted into the cold water pipe, it is characterised in that：The outer surface of the probe portion and
Probe portion is respectively equipped with anticorrosion conductive layer with base junction, and base portion is provided with away from the outer end of the probe portion
The outer conductive connection part being conductively connected with the probe portion.
2. converter valve screening electrodes according to claim 1, it is characterised in that：The base includes and probe portion one
The middle matrix and be set in the external injection set for being used to be sealingly fitted in the electrode mounting hole of intermediate base that body is set.
3. converter valve screening electrodes according to claim 2, it is characterised in that：The middle matrix covers with the injection
Corresponding outer peripheral face is provided with anticorrosion conductive layer.
4. converter valve screening electrodes according to claim 2, it is characterised in that：The interior jacket wall of the injection set and centre
Concavo-convex connected structure is provided between the outer peripheral face of matrix.
5. converter valve screening electrodes according to claim 4, it is characterised in that：The concavo-convex connected structure includes setting
The annular protrusion and annular groove of the identical grafting of correspondence on the interior jacket wall of the injection set and on the outer peripheral face of middle matrix.
6. converter valve screening electrodes according to claim 3, it is characterised in that：The middle matrix and probe portion are equal
It is made up of stainless steel material, the anticorrosion conductive layer being arranged on probe portion and middle matrix is plating platinum layer.
7. converter valve screening electrodes according to claim 2, it is characterised in that：The outer conductive connection part is intermediate base
The hole shape conductive connection part that external end face is provided with.
8. converter valve screening electrodes according to claim 2, it is characterised in that：The injection set deviates from the probe
The annular block step that block faces outwardly is provided with partial outer end aperture, the annular block step is used for and the middle matrix
The step surface of outer end forms block and coordinated.
9. converter valve screening electrodes as claimed in any of claims 2 to 8, it is characterised in that：The injection set
With for the external thread section with the internal thread segment threaded engagement in the electrode mounting hole.
10. converter valve screening electrodes according to claim 9, it is characterised in that：It is described injection set overcoat wall in
The annular gear edge on the converter valve cold water pipe for top pressure is convexly equipped with the outside of external thread section, annular gear edge is vertically
The mounting groove for being used for installing sealing ring is provided with towards the side of the converter valve cold water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710882535.XA CN107749719A (en) | 2017-09-26 | 2017-09-26 | Converter valve screening electrodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710882535.XA CN107749719A (en) | 2017-09-26 | 2017-09-26 | Converter valve screening electrodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107749719A true CN107749719A (en) | 2018-03-02 |
Family
ID=61254773
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710882535.XA Pending CN107749719A (en) | 2017-09-26 | 2017-09-26 | Converter valve screening electrodes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107749719A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109756131A (en) * | 2019-03-06 | 2019-05-14 | 重庆大学 | A kind of converter valve cooling system porous graphite screening electrodes |
| CN113670808A (en) * | 2021-08-18 | 2021-11-19 | 华北电力大学 | Single-valve-section parallel cooling water path system of converter valve |
| CN113931916A (en) * | 2021-09-29 | 2022-01-14 | 中国南方电网有限责任公司超高压输电公司昆明局 | Protection adapter and main water pipeline system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203813035U (en) * | 2014-01-02 | 2014-09-03 | 常州博瑞电力自动化设备有限公司 | Water electrode used in valve tower waterway |
| CN206389291U (en) * | 2016-12-12 | 2017-08-08 | 中国南方电网有限责任公司超高压输电公司贵阳局 | A kind of high voltage direct current converter valve screening electrodes mounting structure |
| CN107171572A (en) * | 2017-06-15 | 2017-09-15 | 中国南方电网有限责任公司超高压输电公司贵阳局 | A kind of high voltage direct current converter valve screening electrodes with separation sleeve |
| CN207175550U (en) * | 2017-08-10 | 2018-04-03 | 广州高澜节能技术股份有限公司 | Electrode needle |
-
2017
- 2017-09-26 CN CN201710882535.XA patent/CN107749719A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203813035U (en) * | 2014-01-02 | 2014-09-03 | 常州博瑞电力自动化设备有限公司 | Water electrode used in valve tower waterway |
| CN206389291U (en) * | 2016-12-12 | 2017-08-08 | 中国南方电网有限责任公司超高压输电公司贵阳局 | A kind of high voltage direct current converter valve screening electrodes mounting structure |
| CN107171572A (en) * | 2017-06-15 | 2017-09-15 | 中国南方电网有限责任公司超高压输电公司贵阳局 | A kind of high voltage direct current converter valve screening electrodes with separation sleeve |
| CN207175550U (en) * | 2017-08-10 | 2018-04-03 | 广州高澜节能技术股份有限公司 | Electrode needle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109756131A (en) * | 2019-03-06 | 2019-05-14 | 重庆大学 | A kind of converter valve cooling system porous graphite screening electrodes |
| CN109756131B (en) * | 2019-03-06 | 2024-04-09 | 重庆大学 | Porous graphite voltage-equalizing electrode for converter valve cooling system |
| CN113670808A (en) * | 2021-08-18 | 2021-11-19 | 华北电力大学 | Single-valve-section parallel cooling water path system of converter valve |
| CN113931916A (en) * | 2021-09-29 | 2022-01-14 | 中国南方电网有限责任公司超高压输电公司昆明局 | Protection adapter and main water pipeline system |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180302 |
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| WD01 | Invention patent application deemed withdrawn after publication |