CN210571898U - Sealing device for high-temperature high-pressure corrosion electrochemical working electrode - Google Patents
Sealing device for high-temperature high-pressure corrosion electrochemical working electrode Download PDFInfo
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- CN210571898U CN210571898U CN201920805199.3U CN201920805199U CN210571898U CN 210571898 U CN210571898 U CN 210571898U CN 201920805199 U CN201920805199 U CN 201920805199U CN 210571898 U CN210571898 U CN 210571898U
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Abstract
A sealing device for a high-temperature high-pressure corrosion electrochemical working electrode is characterized in that a hold-down nut at the top end of a kettle cover is connected with a hold-down bolt at the top end of the kettle cover through threads, a sealing element of an outer circular platform of the kettle is extruded, and a conductor column sleeved with a polytetrafluoroethylene heat-shrinkable sleeve is sealed and insulated with the kettle cover of the autoclave. The electrode block is embedded into the electrode sealing sleeve, sealing between the electrode block and the electrode sealing sleeve is realized in an interference fit mode, and an internal threaded hole is machined in the center of the upper end of the electrode block and is electrically connected with the lower end of the lead column through threads. After the lower end of the compression bolt in the kettle is connected with the upper end of the electrode sealing sleeve through threads, the compression nut in the kettle is connected with the upper end of the compression bolt in the kettle through threads, and the sealing element of the circular table in the kettle is extruded to realize the sealing of the conductor column in the kettle. The device realizes the integral sealing of the high-temperature high-pressure corrosion electrochemical working electrode and the connecting lead.
Description
Technical Field
The utility model relates to a corrode electrochemistry electrode sealing device technical field, in particular to high temperature high pressure corrosion electrochemistry working electrode's sealing device.
Background
At present, the corrosion condition of materials under the conditions of design temperature and pressure is related to the safety of equipment when a high-temperature gas cooled reactor unit is about to be put into operation. The corrosion electrochemistry is a research means for rapidly obtaining the corrosion mechanism and influencing factors of the material. In the normal temperature corrosion electrochemical research, the working electrode is generally sealed by epoxy resin organic matters, the testing surface is generally a plane, and the electrode testing surface and the auxiliary electrode are arranged in parallel, so that the uniformity of a power line flowing through the working electrode in the testing process is ensured, and an accurate measuring result is obtained. However, in the current electrochemical research of high-temperature and high-pressure corrosion, the working electrode is in a sheet shape (cuboid), and the conducting wire wires made of the same material or made of a higher grade of material of the working electrode are electrically connected with the working electrode in a spot welding mode. The wire is generally sheathed with a heat-shrinkable sleeve to prevent the wire from influencing the electrochemical measurement, the wire is led out of the kettle through a kettle cover of the autoclave, and a unique sealing mechanism is designed at the kettle cover to realize the sealing and insulation of the connecting position of the wire and the kettle cover. The wire and the working electrode are of special-shaped structures, and the spot welding position cannot be sealed so as to avoid influencing the electrochemical measurement result. However, there is currently a lack of design for reducing the sealing of the working electrode, so as to ensure that the testing surface of the working electrode is a plane and to achieve the sealing of the profile structure at the junction of the wire and the working electrode.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a high-temperature high-pressure corrosion electrochemical working electrode sealing device which has the characteristics of good sealing performance and simple electrode manufacture.
In order to realize the purpose, the utility model discloses a technical scheme is:
the utility model provides a high temperature high pressure corrosion electrochemical work electrode's sealing device, includes wire column 1, 1 overcoat of wire column has heat shrinkage bush 2, and wire column 1 passes 6 upper end welded kettle cover top gland bolt 5 of autoclave kettle cover, overlaps on wire column 1 with cauldron outer round platform sealing member 4, kettle cover top gland seal nut 3, 1 lower extreme of wire column pass through electric connection electrode block 11, during electrode block 11 imbeds electrode seal cover 10, the tight bolt 9 in the cauldron is connected through the screw thread to electrode seal cover 10 upper end, the tight nut 7 in the cauldron is connected to the tight bolt 9 upper end in the cauldron, the cauldron in be provided with cauldron between the tight nut 7 in tight bolt 9 and the cauldron in the sealed 8.
The heat-shrinkable sleeve 2 is a polytetrafluoroethylene heat-shrinkable sleeve.
The kettle cover top end pressing and sealing nut 3 is connected with the kettle cover top end pressing bolt 5 through threads, and extrudes the kettle outer circular platform sealing element 4.
The lower end of the wire column 1 is of an external thread structure, an internal thread hole is processed in the center of the upper end of the electrode block 11, and the lower end of the wire column 1 is electrically connected with the electrode block 11 through threads.
The electrode block 11 and the electrode sealing sleeve 10 are in interference fit to realize the sealing between the electrode block 11 and the electrode sealing sleeve 10.
The kettle outer circular table sealing element 4, the kettle inner circular table sealing element 8 and the electrode sealing sleeve 10 are all made of polytetrafluoroethylene materials.
The use method of the sealing device for the high-temperature high-pressure corrosion electrochemical working electrode comprises the following steps:
1) embedding an electrode block 11 into an electrode gland 10;
2) sleeving a polytetrafluoroethylene heat-shrinkable sleeve 2 at the outer end of a lead column 1, and connecting the lower end of the lead column 1 with the upper end of an electrode block 11 through threads after sintering;
3) sleeving a kettle internal pressing bolt 9 from the upper end of a lead post 1, connecting the kettle internal pressing bolt with the upper end of an electrode seal sleeve 10 through a thread, then sequentially sleeving a kettle internal circular platform seal member 8 and a kettle internal pressing nut 7 from the upper end of the lead post 1, connecting the kettle internal pressing nut 7 with the kettle internal pressing bolt 9 through a thread, and extruding and sealing the kettle internal circular platform seal member 8 after screwing;
4) the method comprises the following steps of enabling a conductor column 1 to penetrate through inner holes of a high-pressure kettle cover 6 and a kettle cover top end compression bolt 5, sequentially sleeving a kettle outer circular platform sealing element 4 and a kettle cover top end compression sealing nut 3 on the conductor column 2, connecting the kettle cover top end compression sealing nut 3 with the kettle cover top end compression bolt 5 through threads, and extruding and sealing the kettle outer circular platform sealing element 4 after screwing.
The utility model has the advantages that:
the sealing of the electrochemical working electrode under the high-temperature and high-pressure condition is realized, the surface to be tested is a plane, the sealing of the special-shaped structure of the connecting position of the electrochemical working electrode and the wire can be realized under the high-temperature and high-pressure condition, and the reliability of research data of the electrochemical corrosion test under the high-temperature and high-pressure condition is favorably ensured.
The device realizes the integral sealing of the high-temperature high-pressure corrosion electrochemical working electrode and the connecting lead, and avoids the condition of uneven current distribution caused by irregular electrode shape and unsealed lead in the high-temperature high-pressure corrosion electrochemical measurement process.
Drawings
Fig. 1 is a schematic view of the structure of the device of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in figure 1, the sealing device for the high-temperature high-pressure corrosion electrochemical working electrode comprises a lead post 1, wherein a polytetrafluoroethylene heat-shrinkable sleeve 2 is sleeved at the outer end of the lead post 1, and an external thread is processed at the lower end of the lead post; the lead column 1 penetrates through a kettle cover top end pressing bolt 5 welded at the upper end of a kettle cover 6 of the high-pressure kettle, a kettle outer circular platform sealing element 4 and a kettle cover top end pressing sealing nut 3 are sleeved on the lead column 1, the kettle cover top end pressing sealing nut 3 is connected with the kettle cover top end pressing bolt 5 through threads, the kettle outer circular platform sealing element 4 is extruded, and the lead column 1 of which the outer end is sleeved with a polytetrafluoroethylene heat-shrinkable sleeve 2 is sealed and insulated with the kettle cover 6 of the high-pressure kettle; 1 lower extreme of wire post carry out the electricity through the screw thread and connect electrode block 11, the processing internal thread hole of 11 upper ends centers of electrode block, with electrode block 11 embedding electrode seal cover 10 in, realize the sealed between electrode block 11 and the electrode seal cover 10 through interference fit's mode, after being connected the cauldron internal compression bolt 9 lower extreme and electrode seal cover 10 upper end through the screw thread, cauldron internal compression nut 7 is connected with cauldron internal compression bolt 9 upper end rethread screw thread, extrude round platform sealing member 8 in the cauldron, realize the sealed of cauldron internal wire post 1. The kettle outer circular table sealing element 4, the kettle inner circular table sealing element 8 and the electrode sealing sleeve 10 are all made of polytetrafluoroethylene materials.
The use method of the sealing device for the high-temperature high-pressure corrosion electrochemical working electrode comprises the following steps:
1) embedding an electrode block 11 into an electrode gland 10;
2) sleeving a polytetrafluoroethylene heat-shrinkable sleeve 2 at the outer end of a lead column 1, and connecting the lower end of the lead column 1 with the upper end of an electrode block 11 through threads after sintering;
3) sleeving a kettle internal pressing bolt 9 from the upper end of a lead post 1, connecting the kettle internal pressing bolt with the upper end of an electrode seal sleeve 10 through a thread, then sequentially sleeving a kettle internal circular platform seal member 8 and a kettle internal pressing nut 7 from the upper end of the lead post 1, connecting the kettle internal pressing nut 7 with the kettle internal pressing bolt 9 through a thread, and extruding and sealing the kettle internal circular platform seal member 8 after screwing;
4) the method comprises the following steps of enabling a conductor column 1 to penetrate through inner holes of a high-pressure kettle cover 6 and a kettle cover top end compression bolt 5, sequentially sleeving a kettle outer circular platform sealing element 4 and a kettle cover top end compression sealing nut 3 on the conductor column 2, connecting the kettle cover top end compression sealing nut 3 with the kettle cover top end compression bolt 5 through threads, and extruding and sealing the kettle outer circular platform sealing element 4 after screwing.
Claims (6)
1. The utility model provides a sealing device of high temperature high pressure corrosion electrochemistry working electrode, its characterized in that, including wire column (1), wire column (1) overcoat has heat shrinkage bush (2), and wire column (1) passes cauldron lid (6) upper end welded kettle cover top gland bolt (5), overlaps cauldron outer round platform sealing member (4), kettle cover top gland nut (3) on wire column (1), wire column (1) lower extreme through electric connection electrode block (11), during electrode block (11) imbed electrode seal cover (10), electrode seal cover (10) upper end is connected cauldron through the screw thread and is pressed gland bolt (9) in the cauldron, cauldron inner gland bolt (9) upper end connect cauldron and press gland nut (7), cauldron inner round platform sealing member (8) between gland bolt (9) and the cauldron.
2. A high temperature and high pressure corrosion electrochemical working electrode sealing device according to claim 1, characterized in that the heat shrink sleeve (2) is a teflon heat shrink sleeve.
3. The sealing device for the high-temperature high-pressure corrosion electrochemical working electrode, as claimed in claim 1, wherein the top end compression sealing nut (3) of the kettle cover is connected with the top end compression bolt (5) of the kettle cover through a thread to extrude the outer circular platform sealing member (4) of the kettle.
4. The sealing device for the high-temperature high-pressure corrosion electrochemical working electrode according to claim 1, characterized in that the lower end of the lead post (1) is of an external thread structure, an internal thread hole is formed in the center of the upper end of the electrode block (11), and the lower end of the lead post (1) is electrically connected with the electrode block (11) through threads.
5. The sealing device for the high-temperature high-pressure corrosion electrochemical working electrode as claimed in claim 1, wherein the electrode block (11) and the electrode sealing sleeve (10) are in interference fit to realize sealing between the electrode block (11) and the electrode sealing sleeve (10).
6. The sealing device for the high-temperature high-pressure corrosion electrochemical working electrode as claimed in claim 1, wherein the kettle outer circular platform sealing element (4), the kettle inner circular platform sealing element (8) and the electrode sealing sleeve (10) are all made of polytetrafluoroethylene materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920805199.3U CN210571898U (en) | 2019-05-30 | 2019-05-30 | Sealing device for high-temperature high-pressure corrosion electrochemical working electrode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920805199.3U CN210571898U (en) | 2019-05-30 | 2019-05-30 | Sealing device for high-temperature high-pressure corrosion electrochemical working electrode |
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| Publication Number | Publication Date |
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| CN210571898U true CN210571898U (en) | 2020-05-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920805199.3U Active CN210571898U (en) | 2019-05-30 | 2019-05-30 | Sealing device for high-temperature high-pressure corrosion electrochemical working electrode |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912777A (en) * | 2020-07-15 | 2020-11-10 | 中国核动力研究设计院 | Sample fixing device for high-temperature and high-pressure electrochemical experiment and mounting method thereof |
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2019
- 2019-05-30 CN CN201920805199.3U patent/CN210571898U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111912777A (en) * | 2020-07-15 | 2020-11-10 | 中国核动力研究设计院 | Sample fixing device for high-temperature and high-pressure electrochemical experiment and mounting method thereof |
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