CN209946065U - Nondestructive clamp for testing electrochemical performance of aluminum-based sacrificial anode - Google Patents
Nondestructive clamp for testing electrochemical performance of aluminum-based sacrificial anode Download PDFInfo
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- CN209946065U CN209946065U CN201920203552.0U CN201920203552U CN209946065U CN 209946065 U CN209946065 U CN 209946065U CN 201920203552 U CN201920203552 U CN 201920203552U CN 209946065 U CN209946065 U CN 209946065U
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Abstract
The utility model relates to a nondestructive clamp for testing electrochemical performance of an aluminum-based sacrificial anode, which comprises an upper support and a lower support which are oppositely arranged from top to bottom, an elastic part which is arranged between the upper support and the lower support and is used for providing opposite clamping force for the upper support and the lower support, and an elastic protection part which is arranged outside the elastic part and is used for isolating the elastic part from the outside, wherein the upper support, the lower support, the elastic part and the elastic protection part are matched to form a containing cavity for containing a piece to be tested and corrosive solution, a conductive core rod is arranged on the upper support, a first elastic insulating washer is arranged on the conductive core rod in a matching way at the peripheral side, and a second elastic insulating washer which is opposite to the first elastic insulating washer is arranged on the lower support, the nondestructive clamp has simple structure, and can simplify the installation process of the piece to be tested, and the test piece to be tested does not need to be reprocessed, so that the test efficiency and the test accuracy are improved.
Description
Technical Field
The utility model belongs to the technical field of corrosion cathodic protection, a aluminium base sacrificial anode electrochemical performance test is with harmless anchor clamps is related to.
Background
The electrochemical cathodic protection system is one of the effective methods for slowing or preventing the corrosion of metal parts, and the sacrificial anode method is widely used due to the advantages of low cost, simplicity, reliability, maintenance-free property and the like. The sacrificial anode materials developed at present mainly include magnesium alloy, zinc alloy, aluminum alloy and iron alloy. Aluminum anodeDue to the advantages of low density, large capacitance, easy availability of raw materials and the like, the coating is widely applied to the field of corrosion prevention of marine structures, and obtains good protection effect. The electrochemical performance of the aluminum-based sacrificial anode of the structure is the most critical index for evaluating whether the quality of the aluminum-based sacrificial anode meets engineering requirements, the test method of the electrochemical performance of the sacrificial anode is specified in GB/T17848, the specification of a test sample is required to be phi 16 x 28mm or phi 16 x 48mm, and the effective working area is controlled to be 14cm2. The existing method is to directly seal the non-working surface of the test sample by using a material with strong insulating property. However, this method has many disadvantages, such as the sealing area is difficult to control accurately when the test sample is sealed with an insulating material; and the insulating material needs to be removed after the test, the process is complicated and easy to remain, the error of subsequent weighing is increased, and the efficiency is low.
In order to avoid the defect of sealing by adopting an insulating material, the upper bottom end and the lower bottom end of a test sample are generally packaged by a method of respectively opening and clamping the upper bottom end and the lower bottom end of the test sample, although the device makes up the defect of directly adopting the insulating material to seal the test sample, the device still has more defects and is mainly embodied as follows: (1) holes are required to be formed in the upper end face and the lower end face of the test sample, so that the processing difficulty is increased, and the time is wasted; (2) the hole on the upper end face of the test sample needs to be a threaded hole, and after the test is finished, because the aluminum-based sacrificial anode is soft, some chip-shaped anode bodies are easy to take out when the sample is screwed out, so that the test precision is influenced; (3) the threaded hole on the upper end surface of the test sample is easy to have residual solution and difficult to remove and dry, so that the efficiency is influenced; (4) the packaging device has more accessories and is complex to operate.
Disclosure of Invention
The utility model provides an aluminium base sacrificial anode electrochemical performance test is with harmless anchor clamps adopts this anchor clamps to carry out aluminium base sacrificial anode electrochemical performance test, can need not to await measuring the test piece trompil, has avoided having the remaining defect of solution because of what the trompil leads to, has improved detection efficiency and detection precision.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a nondestructive clamp for testing electrochemical performance of an aluminum-based sacrificial anode comprises an upper support and a lower support which are arranged oppositely, an elastic piece which is arranged between the upper support and the lower support and used for providing opposite clamping force for the upper support and the lower support, and an elastic protection piece which is sleeved outside the elastic piece and used for isolating the elastic piece from the outside, wherein the upper support, the lower support, the elastic piece and the elastic protection piece are matched to form a containing cavity used for containing a piece to be tested and corrosive solution, a conductive core rod is arranged on the upper support, a first elastic insulating gasket is arranged on the periphery of the conductive core rod in a matched mode, a second elastic insulating gasket which is opposite to the first elastic insulating gasket is arranged on the lower support, and when the piece to be tested is measured, a card which is matched with the upper end face and the lower end face of the piece to be tested is arranged between the first elastic insulating gasket and the second elastic insulating gasket, and the conductive core rod and the second elastic insulating gasket are clamped The upper end surfaces of the pieces to be tested are contacted.
Further, the elastic member is a spring.
Furthermore, the upper bracket and the lower bracket are respectively provided with a connecting piece, one end of the spring is connected with the connecting piece on the upper bracket, and the other end of the spring is connected with the connecting piece on the lower bracket.
Further, the elastic protection piece is made of a soft insulating corrosion-resistant material.
Further, the outer diameter of the first elastic insulating washer is not smaller than the outer diameter of the upper end face of the to-be-tested part; the outer diameter of the second elastic insulating washer is not smaller than the outer diameter of the lower end face of the to-be-tested part.
Further, the conductive core rod penetrates into the accommodating cavity from the outer side of the upper support, and the first elastic insulating washer is arranged on the inner wall of the upper support.
Furthermore, the inner wall of the first elastic insulating gasket is tightly attached to the outer wall of the conductive core rod, when the piece to be tested is measured, the first elastic insulating gasket is tightly attached to the upper end face of the piece to be tested in a matched mode, and the second elastic insulating gasket is tightly attached to the lower end face of the piece to be tested in a matched mode.
Furthermore, the inner wall of the lower support is provided with a containing groove used for accommodating the lower part of the second elastic insulating gasket in a matched mode, and the upper part of the second elastic insulating gasket is located outside the containing groove.
After the technical scheme more than adopting, compared with the prior art, the utility model has the following advantage: compared with the existing sample packaging device for testing the electrochemical performance of the aluminum-based sacrificial anode, the nondestructive clamp is used for clamping the piece to be tested, the piece to be tested does not need to be reprocessed, the defect that the residual solution of the piece to be tested is difficult to remove due to the opening is avoided, and the testing efficiency and accuracy are improved; and the utility model discloses a harmless anchor clamps simple structure can simplify the installation flow of waiting to test the piece, and the both ends that will wait to test the piece through the elastic component are pressed from both sides tightly, can prevent that corrosive solution from getting into the terminal surface of waiting to test the piece, and the side area of guaranteeing that the piece that waits to test stays in corrosive solution is effective working area.
Drawings
FIG. 1 is a schematic structural view of the nondestructive clamp of the present invention when a test piece is not loaded;
fig. 2 is the structure diagram of the nondestructive clamp of the utility model after the piece to be tested is packed into.
Wherein the content of the first and second substances,
1. an upper bracket; 2. a lower bracket; 3. an elastic member; 4. an elastic guard; 5. an accommodating chamber; 6. a connecting member; 7. a conductive core rod; 8. a first elastic insulating gasket; 9. a test piece to be tested; 10. a second resilient insulating gasket.
Detailed Description
The present invention will be further explained with reference to the drawings and the embodiments.
As shown in fig. 1 and fig. 2, a nondestructive clamp for testing electrochemical performance of an aluminum-based sacrificial anode comprises an upper support 1 and a lower support 2 which are arranged oppositely, an elastic member 3 which is arranged between the upper support 1 and the lower support 2 and is used for providing an opposite clamping force for the upper support 1 and the lower support 2, and an elastic protection member 4 which is sleeved outside the elastic member 3 and is used for isolating the elastic member from the outside, wherein the upper support 1, the lower support 2, the elastic member 3 and the elastic protection member 4 are matched to form a containing cavity 5 which is used for containing a to-be-tested member 9 and a corrosive solution. The upper bracket 1 is provided with a conductive core rod 7, the periphery of the conductive core rod 7 is provided with a first elastic insulating gasket 8 in a matching way, and the lower bracket 2 is provided with a second elastic insulating gasket 10 opposite to the first elastic insulating gasket 8. When the test piece 9 to be tested is measured, the upper end surface and the lower end surface of the test piece 9 to be tested are clamped between the first elastic insulating washer 8 and the second elastic insulating washer 10 in a matching manner, and the conductive core rod 7 is in contact with the upper end surface of the test piece 9 to be tested.
In this embodiment, the elastic member 3 is a spring, and preferably a strong spring is used. In order to fix the spring, the upper bracket 1 and the lower bracket 2 are respectively provided with a connecting piece 6, one end of the spring is connected with the connecting piece 6 on the upper bracket 1, and the other end of the spring is connected with the connecting piece 6 on the lower bracket 2. The connection member 6 in this embodiment is a hard insulated corrosion resistant swivel head.
Preferably, the first elastic insulating gasket 8 and the second elastic insulating gasket 10 are made of a material having corrosion resistance. The elastic protection piece 4 is made of soft insulating corrosion-resistant material.
In order to ensure that the first elastic insulating washer 8 completely covers the upper end face of the piece to be tested 9, the outer diameter of the first elastic insulating washer 8 is not less than that of the upper end face of the piece to be tested 9; accordingly, in order to ensure that the second elastic insulating gasket 10 completely covers the lower end surface of the test piece 9, the outer diameter of the second elastic insulating gasket 10 is not less than the outer diameter of the lower end surface of the test piece 9.
The conductive core rod 7 penetrates into the accommodating cavity 5 from the outer side of the upper support 1, and the first elastic insulating gasket 8 is arranged on the inner wall of the upper support 1. The middle of the first elastic insulating washer 8 is provided with an opening, the diameter of the opening is equal to the diameter of the extending end of the conductive core rod 7, and therefore the inner wall of the first elastic insulating washer 8 is attached to the outer wall of the conductive core rod 7. The second resilient insulating gasket 10 is a solid gasket. When the test piece 9 to be tested is measured, the first elastic insulating gasket 8 is closely attached to the upper end face of the test piece 9 to be tested in a matching manner, and the second elastic insulating gasket 10 is closely attached to the lower end face of the test piece 9 to be tested in a matching manner, so that the corrosive solution in the containing cavity 5 can be prevented from contacting with the upper end face or the lower end face of the test piece 9 to be tested.
When the test piece 9 is not mounted, the lower end surface of the first elastic insulating washer 8 is slightly lower than the lower end surface of the conductive core rod 7, and the distance is preferably such that when the test piece 9 is disposed between the first elastic insulating washer 8 and the second elastic insulating washer 10 and clamped, the protruding end of the conductive core rod 7 just contacts with the upper end surface of the test piece 9. And testing whether the contact between the conductive core rod 7 and the to-be-tested piece 9 is good or not by using a universal meter, and if the tested resistance is infinite, indicating that the conductive core rod 7 is not in contact with the to-be-tested piece 9, replacing a stronger spring until the resistance displays a proper value.
In this embodiment, the inner wall of the lower frame 2 is further provided with a receiving groove for accommodating the lower end of the second elastic insulating gasket 10, and the upper portion of the second elastic insulating gasket 10 is located outside the receiving groove. By providing the receiving groove, the second elastic insulating gasket 10 can be better fixed.
The utility model discloses a harmless anchor clamps simple structure can simplify the installation flow of waiting to test 9 to need not to treat test 9 and reprocess, avoided waiting to test 9 and leaded to remaining the not enough of solution difficult removals because of the trompil, improved the efficiency and the degree of accuracy of test.
The above embodiments are only for illustrating the technical concept and features of the present invention, and the purpose of the embodiments is to enable people skilled in the art to understand the contents of the present invention and to implement the present invention, which cannot limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered by the protection scope of the present invention.
Claims (8)
1. The utility model provides an aluminium base sacrificial anode electrochemical performance test is with harmless anchor clamps which characterized in that: comprises an upper bracket and a lower bracket which are oppositely arranged up and down, an elastic piece which is arranged between the upper bracket and the lower bracket and is used for providing opposite clamping force for the upper bracket and the lower bracket, and an elastic protection piece which is sleeved outside the elastic piece and is used for isolating the elastic piece from the outside, the upper bracket, the lower bracket, the elastic piece and the elastic protection piece are matched to form a containing cavity for containing a piece to be tested and corrosive solution, the upper bracket is provided with a conductive core rod, the periphery of the conductive core rod is provided with a first elastic insulating washer in a matching way, a second elastic insulating gasket opposite to the first elastic insulating gasket is arranged on the lower bracket, when the test piece is measured, the upper end face and the lower end face of the test piece are clamped between the first elastic insulating gasket and the second elastic insulating gasket in a matched mode, and the conductive core rod is in contact with the upper end face of the test piece.
2. The nondestructive clamp for the test of the electrochemical performance of the aluminum-based sacrificial anode, according to claim 1, is characterized in that: the elastic piece is a spring.
3. The nondestructive clamp for the test of the electrochemical performance of the aluminum-based sacrificial anode, according to claim 2, is characterized in that: the upper bracket and the lower bracket are respectively provided with a connecting piece, one end of the spring is connected with the connecting piece on the upper bracket, and the other end of the spring is connected with the connecting piece on the lower bracket.
4. The nondestructive clamp for the test of the electrochemical performance of the aluminum-based sacrificial anode, according to claim 1, is characterized in that: the elastic protection piece is made of soft insulating corrosion-resistant materials.
5. The nondestructive clamp for the test of the electrochemical performance of the aluminum-based sacrificial anode, according to claim 1, is characterized in that: the outer diameter of the first elastic insulating washer is not smaller than the outer diameter of the upper end face of the to-be-tested part; the outer diameter of the second elastic insulating washer is not smaller than the outer diameter of the lower end face of the to-be-tested part.
6. The nondestructive clamp for the test of the electrochemical performance of the aluminum-based sacrificial anode, according to claim 1, is characterized in that: the conductive core rod penetrates into the accommodating cavity from the outer side of the upper support, and the first elastic insulating washer is arranged on the inner wall of the upper support.
7. The nondestructive clamp for the test of the electrochemical performance of the aluminum-based sacrificial anode, according to claim 6, is characterized in that: the inner wall of the first elastic insulating gasket is tightly attached to the outer wall of the conductive core rod, when the piece to be tested is measured, the first elastic insulating gasket is tightly attached to the upper end face of the piece to be tested in a sealing mode in a matched mode, and the second elastic insulating gasket is tightly attached to the lower end face of the piece to be tested in a sealing mode in a matched mode.
8. The nondestructive clamp for the test of the electrochemical performance of the aluminum-based sacrificial anode, according to claim 1, is characterized in that: and the inner wall of the lower support is provided with a containing groove used for accommodating the lower part of the second elastic insulating gasket in a matched manner, and the upper part of the second elastic insulating gasket is positioned outside the containing groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920203552.0U CN209946065U (en) | 2019-02-15 | 2019-02-15 | Nondestructive clamp for testing electrochemical performance of aluminum-based sacrificial anode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920203552.0U CN209946065U (en) | 2019-02-15 | 2019-02-15 | Nondestructive clamp for testing electrochemical performance of aluminum-based sacrificial anode |
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| CN209946065U true CN209946065U (en) | 2020-01-14 |
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| CN201920203552.0U Active CN209946065U (en) | 2019-02-15 | 2019-02-15 | Nondestructive clamp for testing electrochemical performance of aluminum-based sacrificial anode |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398156A (en) * | 2020-04-07 | 2020-07-10 | 赣州有色冶金研究所 | Sample clamp for electrochemical experiment and using method thereof |
| CN113386062A (en) * | 2021-06-11 | 2021-09-14 | 盐城工学院 | Electrochemistry test fixture |
-
2019
- 2019-02-15 CN CN201920203552.0U patent/CN209946065U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111398156A (en) * | 2020-04-07 | 2020-07-10 | 赣州有色冶金研究所 | Sample clamp for electrochemical experiment and using method thereof |
| CN113386062A (en) * | 2021-06-11 | 2021-09-14 | 盐城工学院 | Electrochemistry test fixture |
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