CN211086465U - Storage tank inner wall cathodic protection polarization testing arrangement - Google Patents
Storage tank inner wall cathodic protection polarization testing arrangement Download PDFInfo
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- CN211086465U CN211086465U CN201921605979.XU CN201921605979U CN211086465U CN 211086465 U CN211086465 U CN 211086465U CN 201921605979 U CN201921605979 U CN 201921605979U CN 211086465 U CN211086465 U CN 211086465U
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Abstract
The utility model discloses a storage tank inner wall cathodic protection polarization testing arrangement relates to storage tank inner wall cathodic protection field. The method comprises the following steps: test material, reference electrode, insulating housing, first cable and second cable, the test material is confirmed according to the material of the storage tank inner wall that awaits measuring, wherein: the testing material is arranged in the insulating shell, the first surface of the testing material is exposed at the bottom of the insulating shell, one end of the first cable is connected with the second surface of the testing material, and the other end of the first cable extends out of the top of the insulating shell; the reference electrode is arranged in the insulating shell, one end of the reference electrode extends out of the bottom of the insulating shell for a preset length, the other end of the reference electrode is connected with one end of a second cable, and the other end of the second cable extends out of the top of the insulating shell. The utility model discloses avoid using a great deal of inconvenience in the operation process that the electric method brought is interrupted in the moment, had simple structure, the convenient advantage of test operation process.
Description
Technical Field
The utility model relates to a storage tank inner wall cathodic protection field especially relates to a storage tank inner wall cathodic protection polarization testing arrangement.
Background
When the storage tank is used, the inner wall and the inner bottom plate are easy to corrode, and at present, the inner wall of the storage tank is usually protected by coating an anticorrosive material on the inner wall and adopting a cathode protection technology. After the inside of the storage tank adopts cathode protection, an instantaneous interruption electrical method is usually adopted for measurement to obtain the polarization potential of the storage tank, so that the effectiveness of the cathode protection system on the inner wall of the storage tank is judged.
The instantaneous power-off method requires that all the connected ground protection and sacrificial anodes on the storage tank need to be disconnected, a plurality of cathode protection devices on the storage tank need to be disconnected simultaneously, and the interference of stray current should not occur at a test point. However, for the situation that a plurality of protection loops exist, it is difficult to interrupt a plurality of power devices simultaneously in the actual test process, and it is difficult to completely eliminate the stray current interference, so that it is difficult to measure the true polarization potential of the storage tank, and the transient interruption method is often difficult to implement due to a lot of inconveniences in the actual engineering.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that to prior art not enough, provide a storage tank inner wall cathodic protection polarization testing arrangement.
The utility model provides an above-mentioned technical problem's technical scheme as follows:
a storage tank inner wall cathodic protection polarization testing arrangement includes: the test material, reference electrode, insulating casing, first cable and second cable, the test material is confirmed according to the material of the storage tank inner wall that awaits measuring, wherein:
the test material is arranged in the insulating shell, a first surface is exposed at the bottom of the insulating shell, one end of the first cable is connected with a second surface of the test material, and the other end of the first cable extends out of the top of the insulating shell;
the reference electrode is arranged in the insulating shell, one end of the reference electrode extends out of the bottom of the insulating shell by a preset length, the other end of the reference electrode is connected with one end of the second cable, and the other end of the second cable extends out of the top of the insulating shell.
The utility model has the advantages that: the utility model provides a storage tank inner wall cathodic protection polarization testing arrangement, placing into the inside back of storage tank, the test material has simulated the inner wall environment of storage tank in other words, detects through the cathodic protection parameter of reference electrode pair test material, can obtain the cathodic protection condition of storage tank inner wall, has avoided using a great deal of inconvenience in the operation process that the electric method brought is interrupted in the twinkling of an eye, has simple structure, the convenient advantage of test operation process.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Drawings
Fig. 1 is a schematic structural diagram provided by an embodiment of the polarization testing apparatus for cathode protection of the inner wall of the storage tank of the present invention.
Detailed Description
The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1, for the structure diagram provided by the embodiment of the storage tank inner wall cathodic protection polarization testing device of the present invention, the storage tank inner wall cathodic protection polarization testing device includes: test material 1, reference electrode 2, insulating housing 3, first cable 4 and second cable 5, test material 1 is confirmed according to the material of the storage tank inner wall that awaits measuring, wherein:
the test material 1 is arranged in the insulating shell 3, a first surface is exposed at the bottom of the insulating shell 3, one end of a first cable 4 is connected with a second surface of the test material 1, and the other end of the first cable 4 extends out of the top of the insulating shell 3;
the reference electrode 2 is arranged inside the insulating shell 3, one end of the reference electrode 2 extends out of the bottom of the insulating shell 3 by a preset length, the other end of the reference electrode 2 is connected with one end of a second cable 5, and the other end of the second cable 5 extends out of the top of the insulating shell 3.
It should be understood that refined chemical substances, such as acid and alkali, alcohol, gas, liquid and the like, stored in the storage tank are corrosive, while the storage tank is usually made of metal materials, and a corrosive medium directly contacts with the inner wall of the metal storage tank to form a primary battery with the metal storage tank, so that electrochemical corrosion is extremely easy to occur. Therefore, the insulating housing 3 used in the present embodiment is a fully-enclosed structure, has good sealing performance, and can be sealed by sealing technology to prevent liquid from entering the inside of the insulating housing 3, at positions protruding from the test material 1 and the reference electrode 2.
The shape of the insulating housing 3 can be set according to actual requirements, for example, the insulating housing can be a cylinder, a cube, a cuboid, or the like, and can be made of insulating materials such as fluorine fiber/polyethylene multilayer insulation or polyvinylidene fluoride/modified olefin.
The shape of the test material 1 may also be set according to actual requirements, for example, it may also be a cylinder, a cube, a cuboid, or the like, and if it is a cylinder, one circular top surface of the cylinder may be protruded outside the insulating housing 3, and the other side surfaces and the other top surface may be inside the insulating housing 3. The space between the circular top surface extending outside the insulating housing 3 and the bottom surface of the insulating housing 3 may be sealed by a sealing tape or the like.
It should be noted that, since the storage tank is usually in a high-temperature and high-salt environment, a problem occurs when cathodic protection is applied, namely, the conventional liquid electrolyte type reference electrode 2 has a high leakage rate, such as liquid Cu/CuSO4 electrode electrolyte, and is not suitable for long-term installation. Therefore, the reference electrode 2 in this embodiment may be a solid Ag/AgCl electrode or a pseudo-reference electrode 2, or a platinum electrode or an MMO electrode, which ensures that the testing device can be used in the storage tank for a long time.
It should be noted that, when the material of the inner wall of the storage tank includes two or more kinds, the test material 1 may be set to be a plurality of kinds correspondingly, and the scheme in this embodiment is installed respectively, so as to implement the cathodic protection test on the materials of the inner wall of the storage tank.
The working flow of the cathode protection polarization testing device for the inner wall of the storage tank is explained below.
Firstly, the testing device is placed inside the storage tank to be tested or placed under the same working environment as the interior of the storage tank to be tested.
It will be appreciated that the test material 1 is intended to simulate the inner wall of a tank, and therefore the electrochemical properties of the test material 1 should be similar or identical to the inner wall of the tank. Preferably, the test material 1 is the same material as the inner wall of the tank.
Then, the first cable 4 and the second cable 5 are connected with an external test host, and the test host can be a potential measuring instrument and the like.
Then, the potential measuring instrument measures the electrical parameters of the reference electrode 2 and the test material 1 to obtain the potential of the test material 1.
The polarization testing device for the cathode protection of the inner wall of the storage tank provided by the embodiment has the advantages that after the polarization testing device is placed inside the storage tank, the testing material 1 is equivalent to the condition of simulating the inner wall environment of the storage tank, the cathode protection parameters of the testing material 1 are detected through the reference electrode 2, the cathode protection condition of the inner wall of the storage tank can be obtained, inconvenience in the operation process caused by the instant electricity interruption method is avoided, the structure is simple, and the testing operation process is convenient.
Optionally, in some embodiments, the material 1 is the same material as the inner wall of the tank to be tested.
Optionally, in some embodiments, the first surface of the test material 1 is further coated with a predetermined coating, which is determined according to the type of coating of the inner wall of the tank to be tested.
Optionally, in some embodiments, the pre-set coating is the same type of coating as the inner wall of the tank to be tested.
Optionally, in some embodiments, the other surface of the test material 1 and the first cable 4 are sealed by an insulating material.
Optionally, in some embodiments, the cavity between the reference electrode 2 and the inner wall of the insulating housing 3 is filled with an insulating material.
Through reasonable structural design and the insulating material is filled in the insulating shell 3, the influence of stray current on the measurement result can be eliminated to the maximum extent, so that the polarization potential of the accurate test material 1 can be measured.
Optionally, in some embodiments, the test material 1 is interference sealed to the bottom of the insulating housing 3.
Optionally, in some embodiments, one end of the first cable 4 is soldered to the second surface of the test material 1.
It will be appreciated that one end of the second cable 5 may also be welded to the other end of the reference electrode 2.
Optionally, in some embodiments, the method further comprises: and a signal transmission port of the test host is respectively connected with the other end of the first cable 4 and the other end of the second cable 5.
It should be understood that the test host may be an instrument capable of measuring electrical potential, such as a potentiometric meter, a current meter, etc.
Optionally, in some embodiments, the method further comprises: and the connecting piece is connected with the outer surface of the insulating shell 3 and is used for controlling the insulating shell 3 to move in the storage tank to be tested.
For example, the connecting member may be an insulating rope connected to the top of the insulating member, and the position of the testing device inside the storage tank may be controlled by pulling and releasing the insulating rope.
Preferably, the test device can be placed 30-50 cm from the inner side wall of the tank and 50cm from the bottom of the tank.
For another example, the connecting member may be a connecting rod, one end of the connecting rod is connected to the top of the insulating member, and the position of the testing device inside the storage tank may be controlled through the other end of the connecting rod.
In the description herein, references to the description of the terms "embodiment one," "embodiment two," "example," "specific example" or "some examples," etc., mean that a particular method, apparatus, or feature described in connection with the embodiment or example is included in at least one embodiment or example of the present invention.
In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, methods, apparatuses, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.
Claims (10)
1. The utility model provides a storage tank inner wall cathodic protection polarization testing arrangement which characterized in that includes: the test material, reference electrode, insulating casing, first cable and second cable, the test material is confirmed according to the material of the storage tank inner wall that awaits measuring, wherein:
the test material is arranged in the insulating shell, a first surface is exposed at the bottom of the insulating shell, one end of the first cable is connected with a second surface of the test material, and the other end of the first cable extends out of the top of the insulating shell;
the reference electrode is arranged in the insulating shell, one end of the reference electrode extends out of the bottom of the insulating shell by a preset length, the other end of the reference electrode is connected with one end of the second cable, and the other end of the second cable extends out of the top of the insulating shell.
2. The device for testing the cathodic protection polarization of the inner wall of the storage tank as claimed in claim 1, wherein the material to be tested is the same as the material of the inner wall of the storage tank to be tested.
3. The tank inner wall cathodic protection polarization testing apparatus of claim 1, wherein the first surface of the test material is further coated with a predetermined coating determined according to the coating type of the tank inner wall to be tested.
4. The tank inner wall cathodic protection polarization testing device of claim 3, wherein the predetermined coating is the same type of coating as the tank inner wall to be tested.
5. The tank inner wall cathodic protection polarization testing apparatus of claim 1, wherein the remaining surfaces of the test material except the first surface and the first cable are sealed by an insulating material.
6. The storage tank inner wall cathodic protection polarization testing device of claim 1, wherein a cavity between the reference electrode and the inner wall of the insulating housing is filled with an insulating material.
7. The storage tank inner wall cathodic protection polarization testing device of claim 1, wherein the test material is interference sealed at the bottom of the insulating housing.
8. The tank inner wall cathodic protection polarization testing device of claim 1, wherein one end of the first cable is welded to the second surface of the test material.
9. The tank inner wall cathodic protection polarization testing device of any one of claims 1 to 8, further comprising: and a signal transmission port of the test host is respectively connected with the other end of the first cable and the other end of the second cable.
10. The tank inner wall cathodic protection polarization testing device of any one of claims 1 to 8, further comprising: the connecting piece is connected with the outer surface of the insulating shell and used for controlling the insulating shell to move in the storage tank to be tested.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921605979.XU CN211086465U (en) | 2019-09-25 | 2019-09-25 | Storage tank inner wall cathodic protection polarization testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921605979.XU CN211086465U (en) | 2019-09-25 | 2019-09-25 | Storage tank inner wall cathodic protection polarization testing arrangement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211086465U true CN211086465U (en) | 2020-07-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921605979.XU Active CN211086465U (en) | 2019-09-25 | 2019-09-25 | Storage tank inner wall cathodic protection polarization testing arrangement |
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|---|---|
| CN (1) | CN211086465U (en) |
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2019
- 2019-09-25 CN CN201921605979.XU patent/CN211086465U/en active Active
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Effective date of registration: 20210329 Address after: 100120 No.6 liupukang street, Xicheng District, Beijing Patentee after: CHINA PETROLEUM ENGINEERING & CONSTRUCTION Corp. Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: BEIJING DWELL PETROLEUM & GAS TECHNOLOGY DEVELOPMENT Co.,Ltd. Patentee after: China National Petroleum Corporation Engineering Design Co.,Ltd. Address before: 100085 room 301-303, 3 / F, block B, No.22, Shangdi Information Road, Haidian District, Beijing Patentee before: BEIJING DESIGN BRANCH OF CHINA PETROLEUM ENGINEERING CONSTRUCTION Co.,Ltd. |