CN107681906A - A kind of converter valve screening electrodes - Google Patents
A kind of converter valve screening electrodes Download PDFInfo
- Publication number
- CN107681906A CN107681906A CN201710883876.9A CN201710883876A CN107681906A CN 107681906 A CN107681906 A CN 107681906A CN 201710883876 A CN201710883876 A CN 201710883876A CN 107681906 A CN107681906 A CN 107681906A
- Authority
- CN
- China
- Prior art keywords
- converter valve
- probe
- screening electrodes
- water pipe
- shaft sleeve
- 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.)
- Pending
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Classifications
-
- 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, split is installed with the probe for being inwardly inserted into converter valve cold water pipe on base, base includes middle matrix, middle matrix is provided with the outer conductive connection part being conductively connected with probe away from the outer end of probe, intermediate base is provided with injection set in vitro, injection set includes being set in the external shaft sleeve part of intermediate base, and shaft sleeve part, which has, to be used for the internal thread segment threaded engagement in electrode mounting hole so that screening electrodes to be arranged on to the external thread section in electrode mounting hole.The converter valve of the present invention is plastic whorl with the external thread section being connected on screening electrodes with converter valve cold water pipe, solves the problems, such as water pipe thread stripped thread, extends the service life of converter valve cold water pipe.
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, flexible direct current transmission converter valve water route screening electrodes are typically in a stainless steel in the prior art
Base 10 secures a very thin platinum pin 20 above, and this screening electrodes structure has a following drawback, and first：Water pipe is generally
Plastics（PVDF）Material, stainless steel electrode whorl of base is sharp, and electrode easily causes water pipe thread cunning when being installed on water pipe
Silk phenomenon, causes the damage of water pipe；Secondth, stainless steel base and platinum pin junction can be because stainless steel be corroded and causes platinum pin to take off
Fall；3rd：Stainless steel base, which is corroded, causes drainage occur.
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 electrode bottom in the prior art
Steel screw thread on seat easily causes the technical problem of converter valve cold water pipe screw thread stripped thread.
To achieve the above object, converter valve provided by the present invention is adopted the following technical scheme that with screening electrodes：One kind is changed
Flow valve screening electrodes, including the base for being sealingly fitted in the electrode mounting hole of converter valve cold water pipe, split on base
The probe for being inwardly inserted into the cold water pipe is installed with, the base includes middle matrix, and deviating from for middle matrix is described
The outer end of probe is provided with the outer conductive connection part being conductively connected with probe, and intermediate base is provided with injection set in vitro, and injection set includes set
The external shaft sleeve part of intermediate base is located at, shaft sleeve part, which has, to be used for the internal thread segment threaded engagement in the electrode mounting hole to incite somebody to action
Screening electrodes are arranged on the external thread section in the electrode mounting hole.
The beneficial effects of the invention are as follows：Electrode on the converter valve screening electrodes of the present invention with converter valve cold water pipe is installed
The external thread section that internal thread segment threaded engagement in hole is fixed is plastic whorl, solves the easy stripped thread of converter valve cold water pipe screw thread
The problem of, extend the service life of converter valve cold water pipe.
Further, the probe is installed in the inner of the middle matrix, and injection set also includes and the shaft sleeve part one
Perforation that is body formed and being passed through with the corresponding end cap portions in end in the intermediate base body, the end cap portions provided with the confession probe.
Further, the middle matrix is provided with from the probe installing hole that end face stretches out in intermediate base body, described
Probe is fixed and is inserted into the probe installing hole.
Further, the middle matrix and shaft sleeve part are provided with the corresponding spiral shell for penetrating and being connected with the probe installing hole
Mounting hole is followed closely, the fixture block coordinated with screw mounting hole sealing is provided with screw mounting hole, the fixture block is used for described in removable fixation
Probe, the fixture block are provided with the screwed hole for being used for installing trip bolt.
Further, concavo-convex connected structure is provided between the interior jacket wall of the shaft sleeve part and the outer peripheral face of middle matrix.
Further, the concavo-convex connected structure includes interior jacket wall and the periphery of middle matrix for being arranged on the shaft sleeve part
The annular protrusion and annular groove of the identical grafting of correspondence on face.
Further, the middle matrix is made up of stainless steel material, and the probe is made up of platinum.
Further, the middle matrix is conducting base, and the outer conductive connection part is to be set on the external end face of intermediate base
Some hole shape conductive connection parts.
Further, the annular block faced outwardly at the outer end aperture of the probe provided with block of the injection set
Step, the annular block step are used to form block cooperation with the step surface that the intermediate base is held in vitro.
Further, it is convexly equipped with the overcoat wall of the shaft sleeve part 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 a kind of structural representation of embodiment of converter valve screening electrodes provided by the present invention；
Fig. 3 is the overall schematic of converter valve screening electrodes shown in Fig. 2.
Embodiment
Embodiments of the present invention are described further below in conjunction with the accompanying drawings.
The specific embodiment of the converter valve screening electrodes mounting structure of the present invention, as shown in Figure 2 to Figure 3, a kind of change of current
Valve screening electrodes, including the base for being sealingly fitted in the electrode mounting hole of converter valve cold water pipe, on base split consolidate
Provided with the probe 2 for being inwardly inserted into cold water pipe, base includes middle matrix 1, and middle matrix is set away from the outer end of probe 2
There is the outer conductive connection part being conductively connected with probe 2, intermediate base is provided with injection set 3 in vitro, and injection set includes being set in intermediate base
External shaft sleeve part, shaft sleeve part have the external thread section 31 being used for the internal thread segment threaded engagement in electrode mounting hole, will
Screening electrodes are arranged in corresponding electrode mounting hole.
As shown in Fig. 2 base includes matrix 1 among made of stainless steel material, middle matrix 1 is conducting base, fixed
The side that justice is axially inserted into converter valve cold water pipe is the inside and outside end face of middle matrix, and middle matrix 1 is provided with from middle matrix
The probe installing hole 11 that the inner extends outwardly, the side contacted with injection set 2 of middle matrix 1 is provided with and probe installing hole
The screw mounting hole 12 of 11 connections, middle matrix 1 are provided with the outer conduction being conductively connected with probe 2 away from the outer end of probe 2 even
Socket part, outer conductive connection part are the hole shape conductive connection part 14 on the external end face of intermediate base, and hole shape conductive connection part 14 is used to connect
It is connected on grounding apparatus or other conductive equipments, to shift the leakage current in converter valve inner cold water road, prevents leakage current to aluminium
Radiator causes electrochemical corrosion.
Injection set 3 is located at the outside of middle matrix 2, and injection set 3 includes the shaft sleeve part being set in outside middle matrix 2, axle sleeve
Portion, which has, to be used for the internal thread segment threaded engagement in electrode mounting hole so that screening electrodes are outer in electrode mounting hole
Thread segment 31, external thread section 31 are provided with insertion corresponding with the screw mounting hole 12 on middle matrix 1 to install trip bolt 13
Hole portion.
Concavo-convex connected structure is provided between the interior jacket wall of shaft sleeve part and the outer peripheral face of middle matrix 1 of injection set 3, it is specific next
Say, the interior jacket wall for being molded set is provided with circumferentially distributed annular protrusion 34, and the outer peripheral face of middle matrix 2 is provided with and convex annular
Play the annular groove 15 of 34 corresponding identical grafting.
It is provided with the overcoat wall of the shaft sleeve part of injection set 3 in the outside of external thread section 31 and is used for top pressure in converter valve cold water pipe
Respective outer face on annular gear along 32, annular gear is provided with installation along 32 side axially towards converter valve cold water pipe
Groove 33, sealing ring 4 is installed on mounting groove 33, sealing ring 4, which is installed in mounting groove 33, forms sealing structure with base and the change of current
Sealing is formed between mounting hole on valve cold water pipe, prevents leak.
Injection set 3 is provided with the annular block step 35 that block faces outwardly, annular block at the outer end aperture of probe 2
Step 35 is used to form block cooperation with the step surface 17 of the middle outer end of matrix 1, to ensure that injection set 3 is connected with middle matrix 1
Fastness.
Probe 2 is made up of platinum, and one end of probe 2 is plugged in the probe installing hole 11 on middle matrix 1, is pacified with probe
The fixture block 16 for being provided with the screw mounting hole 12 that hole 11 connects and coordinating with screw mounting hole sealing is filled, fixture block 16 is used for removable fixation
Probe 2, fixture block 16 are provided with the screwed hole for being used for installing trip bolt 13, and trip bolt 13 is screwed in screwed hole to apply card
Block 16 is to the thrust of probe 3 and then probe 2 is fastened on middle matrix 1.
To be further ensured that fastness that probe 2 is connected with middle matrix 1, injection set 3 also include with shaft sleeve part one into
Type and end cap portions 35 corresponding with middle the inner of matrix 1, the end cap portions are provided with the perforation 36 passed through for probe 2, end cap portions 35
It can ensure that the junction of middle matrix 1 and probe 2 is not etched electrochemically, avoid the leak caused by corrosion of middle matrix.
In the present embodiment, probe is made up of platinum, in other embodiments, can also be made up of other inert metals,
Such as gold, electrochemical reaction does not occur with water as long as its activity is located at after silver or be coated in middle matrix and probe portion
The exceptionally anticorrosion electrically-conducting paint on surface.
In the present embodiment, probe utilizes the cooperation releasable connection of trip bolt and fixture block on base, in other implementations
In example, other releasable connection modes can also be used, it is such as be hinged.
In the present embodiment, sealing ring, which is arranged in the mounting groove that injection is put, forms sealing, in other embodiments,
Other sealing structures can be used.
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.
Claims (10)
1. a kind of converter valve screening electrodes, including the bottom for being sealingly fitted in the electrode mounting hole of converter valve cold water pipe
Seat, on base split be installed with the probe for being inwardly inserted into the converter valve cold water pipe, it is characterised in that：The base bag
Middle matrix is included, middle matrix is provided with the outer conductive connection part being conductively connected with probe, centre away from the outer end of the probe
Matrix is externally provided with injection set, and injection set includes being set in the external shaft sleeve part of intermediate base, and shaft sleeve part, which has, to be used for and the electrode
Internal thread segment threaded engagement in mounting hole is with the external thread section by screening electrodes in the electrode mounting hole.
2. converter valve screening electrodes according to claim 1, it is characterised in that：The probe is installed in the intermediate base
The inner of body, injection set also include be integrally formed with the shaft sleeve part and with the corresponding end cap portions in end in the intermediate base body, this
End cap portions are provided with the perforation passed through for the probe.
3. converter valve screening electrodes according to claim 2, it is characterised in that：The middle matrix is provided with from middle
The probe installing hole that matrix the inner extends outwardly, the probe are fixed and are inserted into the probe installing hole.
4. converter valve screening electrodes according to claim 3, it is characterised in that：Set in the middle matrix and shaft sleeve part
There is the corresponding screw mounting hole for penetrating and being connected with the probe installing hole, be provided with screw mounting hole close with the screw mounting hole
The fixture block coordinated is sealed, the fixture block is used for the removable fixation probe, and the fixture block is provided with the screwed hole for being used for installing trip bolt.
5. according to the converter valve screening electrodes described in claim 1 or 2 or 3 or 4, it is characterised in that：The shaft sleeve part it is interior
Concavo-convex connected structure is provided between the outer peripheral face of jacket wall and middle matrix.
6. converter valve screening electrodes according to claim 5, 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 shaft sleeve part and the outer peripheral face of middle matrix.
7. according to the converter valve screening electrodes described in claim 1 or 2 or 3 or 4, it is characterised in that：The middle matrix by
Stainless steel material is made, and the probe is made up of platinum.
8. according to the converter valve screening electrodes described in claim 1 or 2 or 3 or 4, it is characterised in that：The middle matrix is
Conducting base, the outer conductive connection part are the hole shape conductive connection part that the external end face of intermediate base is provided with.
9. according to the converter valve screening electrodes described in claim 1 or 2 or 3 or 4, it is characterised in that：The back of the body of the injection set
From being provided with the annular block step that faces outwardly of block at the outer end aperture of the probe, the annular block step be used for it is described in
Between matrix outer end step surface formed block coordinate.
10. according to the converter valve screening electrodes described in claim 1 or 2 or 3 or 4, it is characterised in that：Outside the shaft sleeve part
The annular gear edge on the converter valve cold water pipe, the annular for top pressure are convexly equipped with the outside of external thread section on jacket wall and keeps off edge
The side axially towards the converter valve cold water pipe be provided with and be used to the mounting groove of sealing ring be installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710883876.9A CN107681906A (en) | 2017-09-26 | 2017-09-26 | A kind of converter valve screening electrodes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710883876.9A CN107681906A (en) | 2017-09-26 | 2017-09-26 | A kind of converter valve screening electrodes |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107681906A true CN107681906A (en) | 2018-02-09 |
Family
ID=61137404
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710883876.9A Pending CN107681906A (en) | 2017-09-26 | 2017-09-26 | A kind of converter valve screening electrodes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107681906A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064013A (en) * | 2019-12-30 | 2020-04-24 | 江苏优尔孚机电技术有限公司 | Pure platinum needle water electrode with high connection and sealing reliability |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579147A (en) * | 2013-11-06 | 2014-02-12 | 国家电网公司 | Equipotential electrode for converter valve |
| 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 |
-
2017
- 2017-09-26 CN CN201710883876.9A patent/CN107681906A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103579147A (en) * | 2013-11-06 | 2014-02-12 | 国家电网公司 | Equipotential electrode for converter valve |
| 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 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111064013A (en) * | 2019-12-30 | 2020-04-24 | 江苏优尔孚机电技术有限公司 | Pure platinum needle water electrode with high connection and sealing reliability |
| CN111064013B (en) * | 2019-12-30 | 2021-06-01 | 江苏优尔孚机电技术有限公司 | Pure platinum needle water electrode with high connection and sealing reliability |
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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 | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20180209 |