CN212380606U - Voltage-sharing electrode for waterway of converter valve - Google Patents
Voltage-sharing electrode for waterway of converter valve Download PDFInfo
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- CN212380606U CN212380606U CN202021417864.0U CN202021417864U CN212380606U CN 212380606 U CN212380606 U CN 212380606U CN 202021417864 U CN202021417864 U CN 202021417864U CN 212380606 U CN212380606 U CN 212380606U
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Abstract
A pressure equalizing electrode for a water channel of a converter valve comprises a stainless steel base, a platinum needle, a screw, a first sealing ring and a plastic sleeve; the stainless steel base is cylindrical, a first hole is formed in the center of one end of the stainless steel base, and one end of the platinum needle is inserted into the first hole of the stainless steel base; a second hole is formed in the side face of the stainless steel base, is a threaded hole and is communicated with the first hole; a screw is screwed into the second hole to fasten the platinum needle in the first hole; the first sealing ring is arranged at the joint of the stainless steel base and the platinum needle and sleeved on the platinum needle; the plastic sleeve is sleeved on the platinum needle and is positioned at one end of the stainless steel base. The pressure-equalizing electrode is installed on the water pipe through the plastic nut and is sealed through the sealing ring, after the pressure-equalizing electrode is installed, the part in contact with cooling water is only provided with the plastic sleeve, the platinum needle and the sealing ring, the stainless steel base is effectively isolated from the cooling water through the plastic sleeve and the sealing ring, and the phenomenon that the platinum needle falls off and leaks caused by corrosion of the stainless steel base is effectively avoided.
Description
Technical Field
The utility model relates to a direct current transmission technology field, concretely relates to converter valve water route voltage-sharing electrode of high reliability.
Background
The converter valve equipment is a key equipment in a high-voltage direct-current transmission system, and the operational reliability of the converter valve equipment directly influences the working stability of the direct-current transmission system. The design of the water cooling system is a very important part in the overall design of the converter valve, and the purpose of the design of the cooling system is to radiate heat to the converter valve so as to keep the temperature of the converter valve at a low level.
Because the cooling water has certain conductivity, corresponding leakage current can be generated in the cooling water, in order to clamp the potential difference in the cooling liquid, a voltage-sharing electrode needs to be reasonably arranged in a water pipe and used for controlling the potential distribution in the cooling water, platinum is an inert material, the platinum electrode cannot be lost due to the leakage current, the electrochemical reaction only can cause the decomposition of water, and therefore the voltage-sharing electrode is usually made of platinum.
However, because the cost of platinum is high, the prior waterway voltage-sharing electrode structure of the direct-current transmission converter valve is characterized in that a thin platinum needle is fixed on a stainless steel base, such as the structures shown in patent application No. 201911387716.0 and patent application No. 201720698197.X, but the voltage-sharing electrode structures have the following defects that 1, the platinum needle is loosened or falls off due to the fact that the stainless steel base is not firmly connected with the platinum needle; 2. the platinum needle falls off at the joint of the stainless steel base and the platinum needle due to the corrosion of the stainless steel in water; 3. the stainless steel base is corroded in water to cause water leakage; 4. the platinum needle and the stainless steel base are connected together in a crimping mode, and the platinum needle is inconvenient to maintain or replace independently.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a change of current valve water route voltage-sharing electrode.
In order to realize the purpose, the utility model provides a pressure equalizing electrode for a water channel of a converter valve, which comprises a stainless steel base 1, a platinum needle 2, a screw 3, a first sealing ring 4 and a plastic sleeve 5;
the stainless steel base 1 is cylindrical, a first hole 9 is formed in the center of one end of the stainless steel base 1, and one end of the platinum needle 2 is inserted into the first hole 9 of the stainless steel base 1;
a second hole 10 is formed in the side face of the stainless steel base 1, and the second hole 10 is a threaded hole and is communicated with the first hole 9; the screw 3 is screwed into the second hole 10 to fasten the platinum pin 2 in the first hole 9;
the first sealing ring 4 is arranged at the joint of the stainless steel base 1 and the platinum needle 2 and sleeved on the platinum needle 2;
the plastic sleeve 5 is sleeved on the platinum needle 2 and is positioned at one end of the stainless steel base 1.
Further, the edge of the first hole 9 on the stainless steel base 1 is provided with a groove 11 for accommodating the first sealing ring 4.
Further, the plastic sleeve further comprises a second sealing ring 6 arranged at the step of the plastic sleeve 5.
Furthermore, the stainless steel base further comprises a plastic nut 7 which is sleeved outside the stainless steel base 1.
Furthermore, one end of the stainless steel base 1 is provided with a plurality of first holes 9, and a plurality of platinum needles 2 are correspondingly inserted.
Further, the stainless steel base 1 has a plurality of second holes 10 on the side surface; a plurality of said screws 3 are screwed into respective said second holes 10.
To sum up, the utility model provides a converter valve water route voltage-sharing electrode, this voltage-sharing electrode include stainless steel base, platinum needle, screw, little sealing washer, plastic sheath, big sealing washer, plastic nut, voltage-sharing electrode pass through plastic nut and install on the water pipe and seal through the sealing washer, voltage-sharing electrode installation back, only plastic sheath, platinum needle and sealing washer with the part of cooling water contact, stainless steel base passes through plastic sheath and sealing washer and effectively keeps apart with the cooling water, has effectively avoided the platinum needle that stainless steel base is corroded to cause to drop and the phenomenon of leaking.
Drawings
Fig. 1 is a three-dimensional structure diagram of a pressure equalizing electrode of a converter valve waterway according to an embodiment of the present invention;
FIG. 2 is a perspective view of a pressure equalizing electrode of a water path of a converter valve with a plastic sleeve according to an embodiment of the present invention;
FIG. 3 is a cross-sectional view of FIG. 2;
fig. 4 is a perspective structure view of another pressure-equalizing electrode for a converter valve waterway according to an embodiment of the present invention.
Reference numerals: 1. a stainless steel base; 2. a platinum needle; 3. a screw; 4. a first seal ring; 5. a plastic sheath; 6. a second seal ring; 7. a plastic nut; 8. a screw hole; 9. a first hole; 10. a second hole; 11. and (4) a groove.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The present invention will be further explained with reference to the drawings.
The utility model aims at providing a novel pressure-equalizing electrode structure in converter valve water route, this pressure-equalizing electrode is by stainless steel base 1, platinum needle 2, screw 3, little sealing washer 4, plastic sheath 5, big sealing washer 6, constitute such as plastic nut 7, pressure-equalizing electrode passes through plastic nut 7 and installs on the water pipe and seal through big sealing washer 6, pressure-equalizing electrode installation back, only plastic sheath 5 with the part of cooling water contact, platinum needle 2 and 2 kinds of sealing washers, stainless steel base 1 is effectively kept apart with the cooling water through plastic sheath 5 and little sealing washer 4, platinum needle 2 that stainless steel base 1 caused by corroding have effectively been avoided drops and the phenomenon of leaking.
Specifically, as shown in fig. 1 to 4, the pressure equalizing electrode for the water path of the converter valve comprises a stainless steel base 1, a platinum needle 2, a screw 3, a first sealing ring 4 and a plastic sleeve 5.
The stainless steel base 1 is cylindrical, the center of one end of the stainless steel base is provided with a first hole 9, and one end of the platinum needle 2 is inserted into the first hole 9 of the stainless steel base 1. A second hole 10 is formed in the side face of the stainless steel base 1, and the second hole 10 is a threaded hole and is communicated with the first hole 9; the screw 3 is screwed into the second hole 10 to fasten the platinum pin 2 in the first hole 9. After the platinum needle is inserted into the stainless steel base, the platinum needle is pressed and fixed through the screw, and the platinum needle is prevented from loosening or falling off. When the platinum needle needs maintenance or replacement, the screws can be loosened to independently disassemble the platinum needle.
The first sealing ring 4 is arranged at the joint of the stainless steel base 1 and the platinum needle 2 and sleeved on the platinum needle 2.
The plastic sleeve 5 is sleeved on the platinum needle 2 and is positioned at one end of the stainless steel base 1.
Further, the edge of the first hole 9 on the stainless steel base 1 is provided with a groove 11 for accommodating the first sealing ring 4. The platinum needle is sleeved with the sealing ring and the plastic sleeve, after the voltage-sharing electrode is installed, the part in contact with cooling water is only the plastic sleeve, the platinum needle and the sealing ring, the stainless steel base is effectively isolated from the cooling water, and the corrosion of the stainless steel base is avoided.
Further, the plastic sleeve further comprises a second sealing ring 6 arranged at the step of the plastic sleeve 5.
Furthermore, the stainless steel base further comprises a plastic nut 7 which is sleeved outside the stainless steel base 1. The voltage-sharing electrode is installed on the water pipe through a plastic nut, and the second sealing ring is pressed to be sealed through screwing the plastic nut in the installation process. The plastic nut is made of PVDF and made of the same material as the water pipe, so that the situation that the water pipe thread is damaged during installation is avoided.
Furthermore, one end of the stainless steel base 1 is provided with a plurality of first holes 9, and a plurality of platinum needles 2 are correspondingly inserted. The voltage-sharing electrode can be expanded into a plurality of platinum pins, and 1 platinum pin can be detached and maintained independently, as shown in fig. 4.
Further, the stainless steel base 1 has a plurality of second holes 10 on the side surface; a plurality of said screws 3 are screwed into respective said second holes 10.
The installation step:
step 1: one end of a stainless steel base 1 is inserted into a platinum needle 2, and the platinum needle 2 is fixed through a screw 3;
step 2: a first sealing ring 4 is sleeved on the platinum needle, and then a plastic sleeve 5 is sleeved on the platinum needle;
and step 3: a second sealing ring 6 is sleeved on the plastic sleeve 5;
and 4, step 4: and mounting the assembled voltage-sharing electrode on the water pipe through a plastic nut 7.
In summary, the utility model provides a pressure equalizing electrode for a water channel of a converter valve, which comprises a stainless steel base, a platinum needle, a screw, a first sealing ring and a plastic sleeve; the stainless steel base is cylindrical, a first hole is formed in the center of one end of the stainless steel base, and one end of the platinum needle is inserted into the first hole of the stainless steel base; a second hole is formed in the side face of the stainless steel base, is a threaded hole and is communicated with the first hole; the screw is screwed into the second hole to fasten the platinum needle in the first hole; the first sealing ring is arranged at the joint of the stainless steel base and the platinum needle and sleeved on the platinum needle; the plastic sleeve is sleeved on the platinum needle and is positioned at one end of the stainless steel base. The pressure-equalizing electrode is installed on the water pipe through the plastic nut and is sealed through the sealing ring, after the pressure-equalizing electrode is installed, the part in contact with cooling water is only provided with the plastic sleeve, the platinum needle and the sealing ring, the stainless steel base is effectively isolated from the cooling water through the plastic sleeve and the sealing ring, and the phenomenon that the platinum needle falls off and leaks caused by corrosion of the stainless steel base is effectively avoided.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (6)
1. A pressure equalizing electrode for a water channel of a converter valve is characterized by comprising a stainless steel base (1), a platinum needle (2), a screw (3), a first sealing ring (4) and a plastic sleeve (5);
the stainless steel base (1) is cylindrical, a first hole (9) is formed in the center of one end of the stainless steel base, and one end of the platinum needle (2) is inserted into the first hole (9) of the stainless steel base (1);
a second hole (10) is formed in the side face of the stainless steel base (1), and the second hole (10) is a threaded hole and is communicated with the first hole (9); the screw (3) is screwed into the second hole (10) to fasten the platinum needle (2) in the first hole (9);
the first sealing ring (4) is arranged at the joint of the stainless steel base (1) and the platinum needle (2) and sleeved on the platinum needle (2);
the plastic sleeve (5) is sleeved on the platinum needle (2) and is positioned at one end of the stainless steel base (1).
2. The pressure equalizing electrode for a converter valve waterway according to claim 1, wherein the edge of the first hole (9) on the stainless steel base (1) is provided with a groove (11) for accommodating the first sealing ring (4).
3. The converter valve waterway voltage-sharing electrode according to claim 1 or 2, further comprising a second sealing ring (6) arranged at a step of the plastic sleeve (5).
4. The pressure equalizing electrode for the waterway of the converter valve according to claim 1 or 2, further comprising a plastic nut (7) sleeved outside the stainless steel base (1).
5. The pressure equalizing electrode for the water circuit of the converter valve according to claim 1 or 2, characterized in that one end of the stainless steel base (1) is provided with a plurality of first holes (9) into which a plurality of platinum needles (2) are inserted correspondingly.
6. A converter valve waterway voltage-sharing electrode according to claim 5, wherein the stainless steel base (1) is provided with a plurality of second holes (10) on the side surface; a plurality of said screws (3) are screwed into respective said second holes (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021417864.0U CN212380606U (en) | 2020-07-17 | 2020-07-17 | Voltage-sharing electrode for waterway of converter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021417864.0U CN212380606U (en) | 2020-07-17 | 2020-07-17 | Voltage-sharing electrode for waterway of converter valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212380606U true CN212380606U (en) | 2021-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021417864.0U Active CN212380606U (en) | 2020-07-17 | 2020-07-17 | Voltage-sharing electrode for waterway of converter valve |
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| Country | Link |
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| CN (1) | CN212380606U (en) |
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- 2020-07-17 CN CN202021417864.0U patent/CN212380606U/en active Active
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