CN110760855B - Device for measuring electric potential of drum type filter screen - Google Patents
Device for measuring electric potential of drum type filter screen Download PDFInfo
- Publication number
- CN110760855B CN110760855B CN201911112189.2A CN201911112189A CN110760855B CN 110760855 B CN110760855 B CN 110760855B CN 201911112189 A CN201911112189 A CN 201911112189A CN 110760855 B CN110760855 B CN 110760855B
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- China
- Prior art keywords
- reference electrode
- telescopic rod
- potential
- probe
- wire
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- 239000000523 sample Substances 0.000 claims abstract description 54
- 238000005259 measurement Methods 0.000 claims abstract description 9
- 239000002184 metal Substances 0.000 claims description 11
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000010949 copper Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 abstract description 3
- 238000005260 corrosion Methods 0.000 abstract description 3
- 230000000737 periodic effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 238000004210 cathodic protection Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F13/00—Inhibiting corrosion of metals by anodic or cathodic protection
- C23F13/02—Inhibiting corrosion of metals by anodic or cathodic protection cathodic; Selection of conditions, parameters or procedures for cathodic protection, e.g. of electrical conditions
- C23F13/06—Constructional parts, or assemblies of cathodic-protection apparatus
- C23F13/08—Electrodes specially adapted for inhibiting corrosion by cathodic protection; Manufacture thereof; Conducting electric current thereto
- C23F13/22—Monitoring arrangements therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to the technical field of corrosion protection, and particularly discloses a device for measuring the potential of a drum type filter screen. The device comprises a potential detector, a reference electrode device, an electric brush probe and a telescopic rod, wherein the reference electrode device is connected to the front end of the telescopic rod through a reference electrode wire, and the reference electrode device is fixed at the tail end of the telescopic rod; the electric brush probe is connected with the potential detector through an electric brush probe wire, so that the reference electrode device, the electric brush probe and the potential detector form a loop. The drum type filter screen potential measuring device can realize the periodic and convenient measurement of the drum type filter screen protection potential, can protect a potential detector and personnel safety by utilizing the magnetic connection mode of the reference electrode device and the telescopic rod, and can conveniently recover the reference electrode device which falls off outside by utilizing the air bag in the reference electrode device.
Description
Technical Field
The invention belongs to the technical field of corrosion protection, and particularly relates to a device for measuring the potential of a drum type filter screen.
Background
The drum type rotary filter screen of the nuclear power plant has the function of removing tiny impurities in the seawater to ensure the normal operation of subsequent equipment, and whether the drum can normally operate has great influence on the power plant. The drum net of the power plant is in seawater with high corrosiveness for a long time, so that a sacrificial anode is arranged on the drum net to protect the drum net from corrosion. The standard for cathodic protection requires that the device should periodically measure whether its protection potential meets the requirements after the sacrificial anode is installed. The protective potential measurement limits are measured at least once every 0.5a at the beginning (1 a-2a after installation) and at the end (near design life 2a-3 a) and once every 1a for the rest of the protective period. Currently, the measurement of the protection potential is mostly used for static equipment, and the protection potential measurement device and the protection potential measurement method for the rotating equipment such as the drum-type rotary filter screen are not available, so that the development of the protection potential measurement device and the protection potential measurement method for the rotating equipment such as the drum-type rotary filter screen is necessary.
Disclosure of Invention
The invention aims to provide a device for measuring the potential of a drum type filter screen, which is used for realizing the periodic measurement of the protection potential of the drum type filter screen.
The technical scheme of the invention is as follows: the device comprises a potential detector, a reference electrode device, an electric brush probe and a telescopic rod, wherein the reference electrode device is connected to the front end of the telescopic rod through a reference electrode wire, and the reference electrode device is fixed at the tail end of the telescopic rod; the electric brush probe is connected with the potential detector through an electric brush probe wire, so that the reference electrode device, the electric brush probe and the potential detector form a loop.
The reference electrode device comprises a reference electrode, a camera, a battery compartment, a wire compartment and a shell, wherein the reference electrode and the camera are arranged in the shell, and the battery compartment and the wire compartment are arranged in the shell and are used for sealing equipment in the shell; the wire bin is internally provided with a wire coiling machine which can be used for coiling and uncoiling the reference electrode wires.
A length sensor is arranged in the coiling machine in the wire bin, and the length sensor can feed back the depth parameter put down by the reference electrode device to the potential detector.
The rubber ring and the reference electrode are sleeved with the rubber ring and are sealed and fixed at the lower end of the shell side by side; the wire bin and the battery bin are arranged in the shell up and down; the battery in the battery bin supplies power for the camera and the wire winder in the wire bin.
The potential detector comprises a display screen, wherein the display screen can display an environment image where the reference electrode device is positioned and the information of the put-down depth of the reference electrode device; the potential detector is supported at the tail end of the telescopic rod through a buckle, and the buckle is in contact connection with a metal contact piece arranged on the telescopic rod, so that the reference electrode device, the potential detector and the electric brush probe form a loop.
The electric brush probe comprises a probe, a probe support and a metal elastic pressing sheet, wherein the probe is fixed in the shell-shaped probe support through a plurality of circumferentially arranged metal elastic pressing sheets.
The probe is made of copper-graphite composite material, and the copper content omega (Cu) in the brush probe is 20% -40%; the probe support is made of insulating materials.
The reference electrode device also comprises an air bag, the air bag is arranged on the outer wall of the shell, when the reference electrode wire is disconnected with the telescopic rod, the air bag in the reference electrode device is automatically opened, and meanwhile, the wire coiling machine in the wire bin can automatically recycle the reference electrode wire and enable the reference electrode device to float on the water surface.
The connection between the end of the reference electrode lead and the front end of the telescopic rod can be automatically separated under the action of external force by utilizing a magnetic connection mode; the end part of the brush probe wire connected with the potential detector is of a plug structure, and the brush probe wire is connected with the potential detector through a jack type connection.
The telescopic rod is further provided with a support, the support can be used for conveniently placing the telescopic rod, and meanwhile the length of the telescopic rod penetrating into the drum net is limited, so that the telescopic rod is prevented from being clamped by the drum net.
The invention has the remarkable effects that: the drum type filter screen potential measuring device can realize the periodic and convenient measurement of the drum type filter screen protection potential, can protect a potential detector and personnel safety by utilizing the magnetic connection mode of the reference electrode device and the telescopic rod, and can conveniently recover the reference electrode device which falls off outside by utilizing the air bag in the reference electrode device.
Drawings
FIG. 1 is a schematic diagram of a potential measuring device for a drum filter according to the present invention;
FIG. 2 is a schematic diagram of the reference electrode device of FIG. 1;
FIG. 3 is a schematic view of the brush probe of FIG. 1;
FIG. 4 is an enlarged view of a portion of the receptacle connection of FIG. 1;
FIG. 5 is an enlarged view of a portion of the wire connection of FIG. 1;
FIG. 6 is a rear view of the detachable device of FIG. 1;
FIG. 7 is an enlarged view of a portion of FIG. 6;
FIG. 8 is a schematic view of the limiting bracket of the telescopic rod in FIG. 1;
In the figure: 1. a potential detector; 2. a reference electrode device; 3. a brush probe; 4. a telescopic rod; 5. a brush probe wire; 6. a reference electrode wire; 7. jack type connection; 8. magnetically connecting; 9. a telescopic rod limiting bracket; 10. a probe; 11. a probe holder; 12. metal elastic tabletting; 13. a buckle; 14. a bracket; 15. a reference electrode; 16. a camera; 17. a rubber ring; 18. a battery compartment; 19. a wire bin; 20. an air bag; 21. a housing; 22. a metal contact.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
As shown in fig. 1 to 8, the potential measuring device for the drum type filter screen comprises a potential detector 1, a reference electrode device 2, a brush probe 3 and a telescopic rod 4, wherein the reference electrode device 2 is connected with the front end of the telescopic rod 4 through a reference electrode lead 6, the potential detector 1 is fixedly arranged at the tail end of the telescopic rod 4, the potential detector 1 is provided with a display, and the environment and the liquid level of the reference electrode device can be fed back to the display by utilizing a camera and a length sensor in the reference electrode device 2; the electric brush probe 3 is connected with the potential detector 1 through an electric brush probe wire 5, wherein the electric brush probe 3 comprises a probe 10, a probe bracket 11 and metal elastic pressing sheets 12, the outer wall of the probe 10 is fixed in the shell-shaped probe bracket 11 through a plurality of circumferentially arranged metal elastic pressing sheets 12, the end part of the electric brush probe wire 5 connected with the potential detector 1 is in a plug structure, the electric brush probe wire is connected with the potential detector 1 through a jack type connection 7, the probe 10 is made of copper-graphite composite material, and the copper content omega (Cu) in the electric brush probe is 20% -40%; the probe bracket 11 is made of insulating materials; the rear end of the potential detector 1 is fixed at the tail end of the telescopic rod 4 through a buckle 13, and the buckle is in contact connection with a metal contact piece 22 arranged on the telescopic rod 4, so that a loop is formed among the reference electrode device 2, the potential detector 1 and the brush probe 3, and measurement can be performed; the reference electrode device 2 comprises a reference electrode 15, a camera 16, a battery compartment 18, a wire compartment 19, an air bag 20 and a shell 21, wherein the reference electrode 15 sleeved with a rubber ring 17 and the camera 16 are arranged at the lower end of the shell 21 side by side, so that the tightness of the inside of the reference electrode device 2 is realized; the wire bin 19 and the battery bin 18 are sequentially arranged up and down and are arranged in the shell 21, and an air bag 20 is circumferentially arranged on the outer wall of the shell 21, wherein batteries in the battery bin supply power to the camera 16 and the wire bin 19, so that a wire coiling machine in the wire bin 19 can be used for coiling and uncoiling wires, a length sensor is arranged in the wire coiling machine, and the length sensor can be fed back to a display screen of the potential detector 1 during uncoiling and is used for determining the depth of the reference electrode device 2 which is put down; the connection between the end of the reference electrode lead 6 and the front end of the telescopic rod utilizes the connection mode of the magnetic connection 8, when the reference electrode lead 6 receives a certain force, the magnetic connection mode can be automatically separated, so that the telescopic rod 4 and personnel are prevented from being driven to cause larger damage; when the reference electrode lead 6 is disconnected at the magnetic connection 8, the air bag in the reference electrode device 2 is automatically opened, and meanwhile, the lead winder in the lead bin 19 can automatically recycle the reference electrode lead 6, so that the reference electrode device 2 can float on the water surface, the safety of the reference electrode device 2 is ensured, the reference electrode is prevented from being entangled by a drum net, and the salvage after the reference electrode device 2 falls off is facilitated; the telescopic rod 4 is also provided with a bracket 14, the bracket 14 can be used for conveniently placing the telescopic rod 4, and meanwhile, the length of the telescopic rod penetrating into the drum net is limited, so that the telescopic rod 4 is prevented from being blocked by the drum net.
When the potential measuring device for the drum-type filter screen is used for measuring the protection potential, the reference electrode falls down through the telescopic rod, the camera is used for shooting pictures, the reference electrode is ensured to be placed in a corrosive medium where the drum-type filter screen is located, the brush probe is contacted with the tangential surface of the drum-type filter screen, and the potential detector automatically records and stores the protection potential of the position of the tested equipment.
Claims (9)
1. The utility model provides a be used for drum type filter screen potential measurement device which characterized in that: the device comprises a potential detector (1), a reference electrode device (2), an electric brush probe (3) and a telescopic rod (4), wherein the reference electrode device (2) is connected to the front end of the telescopic rod (4) through a reference electrode lead (6), and the reference electrode device (2) is fixed at the tail end of the telescopic rod (4); the electric brush probe (3) is connected with the potential detector (1) through an electric brush probe wire (5), so that the reference electrode device (2), the electric brush probe (3) and the potential detector (1) form a loop; the reference electrode device (2) further comprises an air bag (20), the air bag (20) is arranged on the outer wall of the shell (21), when the reference electrode lead (6) is disconnected with the telescopic rod (4), the air bag (20) in the reference electrode device (2) is automatically opened, and meanwhile, the reference electrode lead (6) can be automatically recovered by the wire coiling machine in the lead bin (19) and the reference electrode device (2) floats on the water surface; the connection between the end of the reference electrode lead (6) and the front end of the telescopic rod (4) can be automatically separated under the action of external force by utilizing the connection mode of the magnetic connection (8).
2. A potential measuring device for a drum screen according to claim 1, wherein: the reference electrode device (2) comprises a reference electrode (15), a camera (16), a battery compartment (18), a wire compartment (19) and a shell (21), wherein the reference electrode (15) and the camera (16) are arranged in the shell (21), the battery compartment (18) and the wire compartment (19) are arranged in the shell (21), and sealing treatment is carried out on equipment in the shell (21); the wire bin (19) is internally provided with a wire coiling machine, and a reference electrode wire (6) can be coiled and uncoiled.
3. A potential measuring device for a drum screen according to claim 2, wherein: a length sensor is arranged in the coiling machine in the wire bin (19), and the length sensor can feed back the depth parameter put down by the reference electrode device (2) to the potential detector (1).
4. A potential measuring device for a drum screen according to claim 2, wherein: the camera (16) and the reference electrode (15) are sleeved with rubber rings (17) and are sealed and fixed at the lower end of the shell (21) side by side; the wire bin (19) and the battery bin (18) are arranged in the shell (21) up and down; the battery in the battery bin (18) supplies power for the camera (16) and the wire winder in the wire bin (19).
5. A potential measuring device for a drum screen according to claim 1, wherein: the potential detector (1) comprises a display screen, wherein the display screen can display an environment image where the reference electrode device (2) is positioned and the information of the put-down depth of the reference electrode device (2); the potential detector (1) is supported at the tail end of the telescopic rod (4) through the buckle (13), the buckle (13) is in contact connection with the metal contact piece (22) arranged on the telescopic rod (4), and the reference electrode device (2), the potential detector (1) and the electric brush probe (3) can form a loop.
6. A potential measuring device for a drum screen according to claim 1, wherein: the electric brush probe (3) comprises a probe (10), a probe support (11) and metal elastic pressing pieces (12), wherein the probe (10) is fixed inside the shell-shaped probe support (11) through a plurality of circumferentially arranged metal elastic pressing pieces (12).
7. The apparatus for measuring the electric potential of a drum screen according to claim 6, wherein: the probe (10) is made of copper-graphite composite material, and the copper content omega (Cu) in the brush probe is 20% -40%; the probe bracket (11) is made of insulating materials.
8. A potential measuring device for a drum screen according to claim 1, wherein: the end part of the brush probe wire (5) connected with the potential detector (1) is of a plug structure, and the brush probe wire is connected with the potential detector (1) through a jack type connection (7).
9. A potential measuring device for a drum screen according to claim 1, wherein: the telescopic rod (4) is also provided with a bracket (14), the telescopic rod (4) can be conveniently placed by using the bracket (14), and the length of the telescopic rod penetrating into the drum net is limited at the same time, so that the telescopic rod (4) is prevented from being blocked by the drum net.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911112189.2A CN110760855B (en) | 2019-11-14 | 2019-11-14 | Device for measuring electric potential of drum type filter screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911112189.2A CN110760855B (en) | 2019-11-14 | 2019-11-14 | Device for measuring electric potential of drum type filter screen |
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| Publication Number | Publication Date |
|---|---|
| CN110760855A CN110760855A (en) | 2020-02-07 |
| CN110760855B true CN110760855B (en) | 2024-06-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911112189.2A Active CN110760855B (en) | 2019-11-14 | 2019-11-14 | Device for measuring electric potential of drum type filter screen |
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| CN (1) | CN110760855B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114293191B (en) * | 2021-12-28 | 2024-05-24 | 苏州热工研究院有限公司 | Method and device for monitoring corrosion state of drum filter screen of nuclear power plant |
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| JPS59190647A (en) * | 1983-04-13 | 1984-10-29 | Tokyo Gas Co Ltd | Corrosion diagnosis apparatus for underground piping |
| US5596267A (en) * | 1994-12-22 | 1997-01-21 | Atlantic Richfield Company | Apparatus and method for measuring potentials through pavements for buried pipeline cathodic protection systems |
| CN105675482A (en) * | 2016-04-14 | 2016-06-15 | 山东科技大学 | Electrochemical corrosion experiment device and method for measuring samples of various sizes |
| CN106053325A (en) * | 2016-07-04 | 2016-10-26 | 山东科技大学 | Electrochemical corrosion experimental facility under effect of stress coupling |
| CN107202755A (en) * | 2017-06-05 | 2017-09-26 | 天津大学 | A kind of electrochemistry noise sensor of metallic conduit outer surface Corrosion monitoring |
| CN108956445A (en) * | 2018-06-27 | 2018-12-07 | 中国科学院金属研究所 | A kind of Evaluation of Corrosion Resistance device of high throughput automated achievable in situ measurement |
| CN109283078A (en) * | 2018-09-07 | 2019-01-29 | 山西大学 | A kind of marine environment and power load coupling experiment analog machine |
| CN109357996A (en) * | 2018-10-23 | 2019-02-19 | 中核核电运行管理有限公司 | A kind of system and method can be used for the measurement of drum type strainer corrosion potential |
| CN211311602U (en) * | 2019-11-14 | 2020-08-21 | 中核核电运行管理有限公司 | Device for measuring potential of drum-shaped filter screen |
-
2019
- 2019-11-14 CN CN201911112189.2A patent/CN110760855B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4061965A (en) * | 1976-05-24 | 1977-12-06 | Mobil Oil Corporation | Method and apparatus for monitoring a cathodically protected corrodible hollow member |
| JPS59190647A (en) * | 1983-04-13 | 1984-10-29 | Tokyo Gas Co Ltd | Corrosion diagnosis apparatus for underground piping |
| US5596267A (en) * | 1994-12-22 | 1997-01-21 | Atlantic Richfield Company | Apparatus and method for measuring potentials through pavements for buried pipeline cathodic protection systems |
| CN105675482A (en) * | 2016-04-14 | 2016-06-15 | 山东科技大学 | Electrochemical corrosion experiment device and method for measuring samples of various sizes |
| CN106053325A (en) * | 2016-07-04 | 2016-10-26 | 山东科技大学 | Electrochemical corrosion experimental facility under effect of stress coupling |
| CN107202755A (en) * | 2017-06-05 | 2017-09-26 | 天津大学 | A kind of electrochemistry noise sensor of metallic conduit outer surface Corrosion monitoring |
| CN108956445A (en) * | 2018-06-27 | 2018-12-07 | 中国科学院金属研究所 | A kind of Evaluation of Corrosion Resistance device of high throughput automated achievable in situ measurement |
| CN109283078A (en) * | 2018-09-07 | 2019-01-29 | 山西大学 | A kind of marine environment and power load coupling experiment analog machine |
| CN109357996A (en) * | 2018-10-23 | 2019-02-19 | 中核核电运行管理有限公司 | A kind of system and method can be used for the measurement of drum type strainer corrosion potential |
| CN211311602U (en) * | 2019-11-14 | 2020-08-21 | 中核核电运行管理有限公司 | Device for measuring potential of drum-shaped filter screen |
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| CN110760855A (en) | 2020-02-07 |
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