CN215955521U - Multi-needle type converter valve water electrode - Google Patents
Multi-needle type converter valve water electrode Download PDFInfo
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- CN215955521U CN215955521U CN202121780137.5U CN202121780137U CN215955521U CN 215955521 U CN215955521 U CN 215955521U CN 202121780137 U CN202121780137 U CN 202121780137U CN 215955521 U CN215955521 U CN 215955521U
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Abstract
The utility model discloses a multi-pin type converter valve water electrode which is arranged on a water containing body and comprises a stainless steel wiring piece, a fixing insert embedded in the stainless steel wiring piece, a plurality of platinum pins respectively connected to the fixing insert, a fixing piece corresponding to the platinum pins and sleeved at the root of the part of the corresponding platinum pins exposed out of the fixing insert so as to fixedly support the platinum pins, and an injection molding piece which is injected outside the stainless steel wiring piece, the fixing insert and the fixing piece so that the stainless steel wiring piece, the fixing insert and the machining piece form a whole. The utility model can increase the contact area of the platinum needle and water, ensure safe and reliable operation, and has low cost compared with a thickened platinum needle.
Description
Technical Field
The utility model relates to a multi-needle type converter valve water electrode.
Background
The extra-high voltage converter valve is an important component of a direct current transmission system, and the reliable operation of the extra-high voltage converter valve is very important. At present, an extra-high voltage direct current converter valve is cooled by deionized water, and because the deionized water is not an absolute insulator, weak leakage current can be generated in water, so that local corrosion of parts is aggravated; the reasonable arrangement of the water electrodes can effectively fix the potential of the cooling liquid, avoid the corrosion of important parts and ensure the safe and reliable operation of products.
The converter valve water electrode is arranged on a PVDF water pipe, the existing water electrode adopts a pure platinum electrode, and the pure platinum electrode has the characteristics of good ductility, melting resistance, friction resistance, corrosion resistance, good heat conduction and electric conductivity and the like, and is the best material for the water electrode. However, the yield strength of the pure platinum electrode is low, and the processing difficulty is high, so that the length of the electrode needle is not suitable to be too long.
The contact area of the single short-needle platinum electrode and water is small, so the current density is large, and the leakage current at the water pipe flange and the corrosion amount of the metal flange are large. If the length of the platinum electrode is not changed, the same contact area with water is ensured, and the platinum material required for thickening the platinum electrode is more, the price is also high.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide the water electrode of the multi-needle converter valve, which can increase the contact area of a platinum needle and water, ensure safe and reliable operation and has low cost compared with a thickened platinum needle.
In order to solve the technical problems, the technical scheme of the utility model is as follows: a multi-needle type converter valve water electrode is installed on a water containing body and comprises:
a stainless steel wiring member;
the fixed insert is embedded in the stainless steel wiring piece;
a plurality of platinum needles respectively connected to the fixing inserts;
the fixing piece corresponds to the platinum needle and is sleeved at the root of the part of the corresponding platinum needle, which is exposed out of the fixing insert, so as to fixedly support the platinum needle;
and the stainless steel wiring piece, the fixed insert and the fixed piece are injected outside the stainless steel wiring piece, the fixed insert and the fixed piece so as to form an integral injection molding piece.
Further, the fixing insert is embedded in the stainless steel wiring piece in an interference mode.
Further, the platinum needle is connected on the fixed insert through cold heading.
In order to further improve the firmness of the connection between the fixing insert and the platinum needle, at least one step is arranged on the part of the platinum needle extending into the fixing insert.
Furthermore, the multi-needle type converter valve water electrode also comprises a locking nut which is matched with the injection molding part in an abutting mode and is used for being in threaded connection with a fixing body so as to enable the injection molding part to be tightly pressed on the water containing body, and the platinum needle extends into the water containing body.
Furthermore, the multi-needle type converter valve water electrode also comprises an anti-rotation component which is arranged between the water containing body and the injection molding part and used for preventing the injection molding part from rotating relative to the water containing body.
Further provided is a concrete structure of an anti-rotation component, which includes:
the square boss is arranged at the end, close to the water-containing body, of the injection molding part;
and the square hole is arranged on the water containing body and matched with the square boss, and the square boss extends into the square hole.
Further in order to improve the centering performance between the locking nut and the injection molding piece, a ball head ball socket structure is arranged at the position where the locking nut is in butt fit with the injection molding piece.
Further, in order to prevent water leakage at the installation position, a sealing ring is arranged between the injection molding piece and the water containing body.
Further, the thread on the locking nut is an external thread.
After the technical scheme is adopted, the utility model has the following beneficial effects:
1. the utility model adopts a multi-platinum-needle structure, increases the contact area of the platinum needle and water, ensures the reliable operation of the product, and reduces the cost compared with a thickened platinum needle;
2. according to the utility model, the platinum pins and the fixed insert are connected by cold heading, and the fixed insert and the stainless steel wiring piece are in interference fit, so that the reliable fixation of a plurality of platinum pins is realized, and the preparation process is simplified;
3. the water electrode is tightly sealed by the locking nut, so that the water electrode is conveniently mounted on the water containing body, and the electrode can be prevented from being inclined when the contact end face is not flat by the aid of the good centering effect of the ball head and the ball socket, so that water leakage is prevented;
4. the square boss is matched with the square hole, so that the injection molding part is prevented from rotating along with the locking nut in the process of rotating the locking nut for fastening, and the distribution of the platinum needles is prevented from being influenced.
Drawings
FIG. 1 is a schematic structural view of a multiple needle converter valve water electrode of the present invention;
fig. 2 is a cross-sectional view of fig. 1.
Detailed Description
In order that the present invention may be more readily and clearly understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
As shown in fig. 1 and 2, a multi-needle type converter valve water electrode is installed on a water containing body, and includes:
a stainless steel wiring member 1;
a fixing insert 2 embedded in the stainless steel wiring piece 1;
a plurality of platinum needles 3 respectively connected to the fixing insert 2;
a fixing part 4 corresponding to the platinum needle 3 and sleeved at the root of the part of the corresponding platinum needle 3 exposed out of the fixing insert 2 to fixedly support the platinum needle 3;
and the stainless steel wiring piece 1, the fixed insert 2 and the fixing piece 4 are injected outside the stainless steel wiring piece 1, the fixed insert 2 and the machining piece to form an integral injection molding piece 5.
In this embodiment, the fixing member 4 can protect the root of the platinum pin 2 and support the platinum pin 2 during injection molding and compression shrinkage.
Specifically, the utility model adopts a structure of multiple platinum needles 3, increases the contact area of the platinum needles 3 and water, ensures the reliable operation of products, and reduces the cost compared with thickening the platinum needles 3.
In this embodiment, the fixing member 4 is a PVDF machined part, and the injection molding member 5 is a PVDF injection molding member.
In this embodiment, the fixing insert 2 is interference-fitted in the stainless wire connecting member 1. When inlaying, at first heat stainless steel wiring piece 1, wait that stainless steel wiring piece 1 expands after, press the stainless steel wiring piece 1 with the fixed mold insert 2 with the frock to keep certain pressure always, wait to cool off the pressure, can guarantee to connect reliably between the two like this.
In this embodiment, the platinum pin 3 is cold-headed and connected to the insert 2.
Specifically, the platinum pins 3 are connected with the fixed insert 2 by cold heading, and the fixed insert 2 is in interference fit with the stainless steel wiring piece 1, so that the platinum pins 3 are reliably fixed, and the preparation process is simplified.
As shown in fig. 2, in order to improve the firmness of the connection between the fixing insert 2 and the platinum needle 3, the portion of the platinum needle 3 protruding into the fixing insert 2 is provided with at least one step.
As shown in fig. 1 and 2, the multi-pin converter valve water electrode further comprises a locking nut 6 which is in butt fit with the injection molding part 5 and is used for being in threaded connection with a fixed body so as to press the injection molding part 5 on the water containing body, and the platinum pin 3 extends into the water containing body.
In this embodiment, the water containing body is a water pipe. The thread on the locking nut 6 is an external thread.
Specifically, the sealing and pressing of the water electrode are realized by the locking nut 6, so that the water electrode is convenient to mount on the water containing body.
As shown in fig. 2, the multi-pin converter valve water electrode further comprises an anti-rotation component arranged between the water containing body and the injection molding part 5 and used for preventing the injection molding part 5 from rotating relative to the water containing body.
As shown in fig. 2, the anti-rotation assembly includes:
the square boss 7 is arranged at the end, close to the water-containing body, of the injection molding part 5;
and the square hole is arranged on the water containing body and matched with the square boss 7, and the square boss 7 extends into the square hole.
Specifically, the square boss 7 is matched with the square hole to prevent the injection molding piece 5 from rotating along with the locking nut 6 in the fastening process of rotating the locking nut 6, so that the distribution of the platinum needles 3 is prevented from being influenced.
As shown in fig. 2, in order to improve the alignment between the locking nut 6 and the injection molded part 5, a ball and socket structure 8 is provided at the position where the locking nut 6 and the injection molded part 5 are in abutting engagement.
In the present embodiment, a ball socket is provided on the lock nut 6, and the injection-molded part 5 is provided with a ball head which is matched with the ball socket and is arranged in the ball socket. The electrode can be prevented from being inclined when the contact end face is not flat by utilizing the good centering effect of the ball head and the ball socket, so that water leakage is prevented.
As shown in fig. 1 and 2, a gasket 9 is provided between the injection-molded member 5 and the water container to prevent water leakage at the installation site.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A multi-needle type converter valve water electrode is arranged on a water containing body and is characterized in that,
it includes:
a stainless steel wiring member (1);
a fixing insert (2) embedded in the stainless steel wiring piece (1);
a plurality of platinum needles (3) respectively connected to the fixing insert (2);
a fixing piece (4) which corresponds to the platinum needle (3) and is sleeved at the root of the part of the corresponding platinum needle (3) exposed out of the fixing insert (2) so as to fixedly support the platinum needle (3);
the injection molding is carried out outside the stainless steel wiring piece (1), the fixed insert (2) and the fixing piece (4) so that the stainless steel wiring piece (1), the fixed insert (2) and the machining piece form an integral injection molding piece (5).
2. The multiple pin converter valve water electrode of claim 1,
the fixing insert (2) is embedded in the stainless steel wiring piece (1) in an interference manner.
3. The multiple pin converter valve water electrode of claim 1,
the platinum needle (3) is connected to the fixed insert (2) in a cold heading manner.
4. The multiple pin converter valve water electrode of claim 3,
the part of the platinum needle (3) extending into the fixed insert (2) is provided with at least one step.
5. The multiple pin converter valve water electrode of claim 1,
the injection molding piece (5) is in butt fit with the locking nut (6) which is in threaded connection with a fixing body so as to compress the injection molding piece (5) on the water containing body, and the platinum needle (3) extends into the water containing body.
6. The multiple-pin converter valve water electrode according to claim 1 or 5,
the anti-rotation component is arranged between the water containing body and the injection molding part (5) and used for preventing the injection molding part (5) from rotating relative to the water containing body.
7. The multiple pin converter valve water electrode of claim 6,
the anti-rotation assembly includes:
a square boss (7) arranged at the end of the injection molding piece (5) close to the water-containing body;
and the square hole is arranged on the water containing body and matched with the square boss (7), and the square boss (7) extends into the square hole.
8. The multiple pin converter valve water electrode of claim 5,
a ball head ball socket structure (8) is arranged at the position where the locking nut (6) is in butt fit with the injection molding part (5).
9. The multiple pin converter valve water electrode of claim 5,
the thread on the locking nut (6) is an external thread.
10. The multiple pin converter valve water electrode of claim 1,
a sealing ring (9) is arranged between the injection molding piece (5) and the water containing body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121780137.5U CN215955521U (en) | 2021-08-02 | 2021-08-02 | Multi-needle type converter valve water electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121780137.5U CN215955521U (en) | 2021-08-02 | 2021-08-02 | Multi-needle type converter valve water electrode |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215955521U true CN215955521U (en) | 2022-03-04 |
Family
ID=80435076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121780137.5U Active CN215955521U (en) | 2021-08-02 | 2021-08-02 | Multi-needle type converter valve water electrode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215955521U (en) |
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2021
- 2021-08-02 CN CN202121780137.5U patent/CN215955521U/en active Active
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