CN107561145B - Corrosion test box - Google Patents
Corrosion test box Download PDFInfo
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- CN107561145B CN107561145B CN201710571981.9A CN201710571981A CN107561145B CN 107561145 B CN107561145 B CN 107561145B CN 201710571981 A CN201710571981 A CN 201710571981A CN 107561145 B CN107561145 B CN 107561145B
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- 238000012360 testing method Methods 0.000 title claims abstract description 234
- 238000005260 corrosion Methods 0.000 title claims abstract description 36
- 230000007797 corrosion Effects 0.000 title claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims abstract description 62
- 238000001125 extrusion Methods 0.000 claims abstract description 37
- 238000007789 sealing Methods 0.000 claims description 11
- 230000000149 penetrating effect Effects 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 6
- 230000037431 insertion Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 239000000126 substance Substances 0.000 claims 3
- 239000004484 Briquette Substances 0.000 claims 1
- 238000004806 packaging method and process Methods 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 13
- 238000012858 packaging process Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000000694 effects Effects 0.000 description 10
- 230000009471 action Effects 0.000 description 9
- 239000002184 metal Substances 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 5
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 239000003822 epoxy resin Substances 0.000 description 2
- 229920000647 polyepoxide Polymers 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
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Abstract
The invention provides a corrosion test chamber, comprising: the box body, the box cover which can be covered and connected with the box body and the extrusion mechanism which is arranged outside the box body; the side wall of the box body is provided with a test hole, the extrusion mechanism is connected to the side wall of the box body and is arranged at the test hole, and the extrusion mechanism is used for extruding a sample so that a test surface of the sample faces the test hole; the extrusion mechanism is provided with a through hole, and the through hole is used for enabling a lead on one surface, opposite to the test surface, of the test sample to penetrate through. According to the invention, the test surface of the sample can be ensured to be contacted with the solution in the box body, the non-test surface of the sample is well packaged, and the test hole is sealed, so that the leakage of the box body is effectively prevented, the accuracy of the test result is further improved, the inclination of the sample can be effectively prevented, the operation is simple, and the packaging time is shortened; in addition, the manual participation in the packaging process is less, the instability in the operation process is reduced, the packaging stability is improved, and the packaging method is suitable for batch tests.
Description
Technical Field
The invention relates to the technical field of corrosion tests, in particular to a corrosion test chamber.
Background
When the metal sample is soaked and subjected to electrochemical corrosion tests, signals transmitted by the metal sample are electric signals, so that the metal sample is required to be only conductive on a testing surface and not conductive on other non-testing surfaces in a solution. In addition, in order to control the contact area between the test surface of the metal sample and the solution and reduce the test error, the metal sample needs to be packaged.
In the conventional packaging method, a lead wire is connected to a non-test surface of a metal sample by soldering, and the non-test surface of the metal sample is coated with paraffin or epoxy resin or is sealed in a PCV tube in a filling manner so that only the test surface is exposed. However, there are many problems in the packaging process, such as the inclination of the metal sample caused by the influence of buoyancy, the leakage of liquid caused by the gap at the packaging position, and the generation of air holes. In addition, in the existing packaging method, the curing time of the packaging coating such as epoxy resin is long, about 1 day; and when the PVC pipe is sealed, the polishing work of the PVC pipe and the metal sample is long in time consumption, so that the packaging work is complicated and long in time consumption. In addition, the packaging process is manually operated by workers, so that instability in the operation process is increased, and the packaging method is not suitable for large-scale tests.
Disclosure of Invention
In view of this, the invention provides a corrosion test chamber, which aims to solve the problems of poor sealing effect, complex operation and prolonged packaging time of the packaging method in the prior art.
The invention provides a corrosion test chamber, which comprises: the box body, the box cover which can be covered and connected with the box body and the extrusion mechanism which is arranged outside the box body; the side wall of the box body is provided with a test hole, the extrusion mechanism is connected to the side wall of the box body and is arranged at the test hole, and the extrusion mechanism is used for extruding a sample so that a test surface of the sample faces the test hole; the extrusion mechanism is provided with a through hole, and the through hole is used for enabling a lead on one surface, opposite to the test surface, of the test sample to penetrate through.
Further, in the corrosion test chamber, the pressing mechanism includes: the device comprises a threaded pipe, a nut in threaded connection with the threaded pipe and an elastic connecting piece; the connecting piece is arranged in the threaded pipe and is in contact with the inner wall of the threaded pipe, and the screw cap is used for extruding the connecting piece; the size of the test hole is larger than or equal to that of the test sample; the connecting piece is provided with a through hole along the axial direction, the sample is placed in the through hole, the shape of the through hole is matched with that of the sample, and the connecting piece is used for extruding the sample and sealing the test hole; the nut is provided with a through hole, and the wire penetrates through the through hole and is arranged outside the nut.
Further, in the corrosion test chamber, the connecting member includes: a first and a second elastic connecting body; the first end of the first connecting body corresponds to the test hole, the second end of the first connecting body is connected with the second connecting body, the second connecting body is in contact with the inner wall of the threaded pipe, the radial distance of the first connecting body is smaller than that of the second connecting body, and the outer wall of the first connecting body is obliquely arranged towards the inner wall of the threaded pipe; the first connecting body and the second connecting body are both provided with through holes along the axial direction, and the through holes of the first connecting body and the through holes of the second connecting body are correspondingly arranged to form through holes; the shape of the inner wall of the top end of the threaded pipe is matched with that of the first connecting body; the test well is larger in size than the specimen.
Further, in the above corrosion test chamber, the size of the test hole is larger than 10% of the size of the test piece.
Further, in the corrosion test box, the pressing mechanism further includes: briquetting; the nut is used for extruding the connecting piece through the pressing block; the wire guide that runs through the briquetting is seted up along the axial to the briquetting, and the wire wears to locate the wire guide in proper order and wears to establish the hole and arrange the outside of nut in.
Further, in the corrosion test box, the connecting piece is a rubber connecting piece.
Furthermore, in the corrosion test box, the threaded pipe and the nut are in triangular threaded connection.
Further, in the corrosion test box, the threaded pipe and the screw cap are both made of PVC materials.
Furthermore, in the corrosion test box, at least two side walls of the box body are provided with test holes, at least two extrusion mechanisms are arranged, and each extrusion mechanism is connected with each side plate in a one-to-one correspondence manner and is arranged at the test hole; the test wells are all of different sizes.
Further, in the corrosion test box, the box cover is provided with an electrode insertion opening.
According to the invention, the side wall of the box body is provided with the test hole, the extrusion mechanism extrudes the sample to enable the test surface of the sample to face the test hole, so that the test surface of the sample is ensured to be contacted with the solution in the box body, the non-test surface of the sample can be well packaged, the test hole is sealed, the leakage of the box body is effectively prevented, the accuracy of a test result is further improved, the inclination of the sample can be effectively prevented under the extrusion action of the extrusion mechanism, only the test surface of the sample is ensured to be stably contacted with the solution in the box body, the operation is simple, the packaging time is shortened, and the problems of poor sealing effect, complex operation and prolonged packaging time of the packaging method in the prior art are solved; in addition, the device has less manual participation in the packaging process, reduces instability in the operation process, improves the packaging stability, and is suitable for batch tests.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic structural diagram of a corrosion test chamber provided in an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a connecting member in a corrosion test chamber according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a case cover in a corrosion test case according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a left side wall of a corrosion test chamber according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a right side wall of the corrosion test box according to the embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1 to 4, a preferred structure of a corrosion test chamber provided by an embodiment of the invention is shown. As shown, the corrosion test chamber includes: a box body 1, a box cover 2 and a squeezing mechanism 3. Wherein, the case cover 2 and the case body 1 can be connected in a covering way. A test hole 11 is formed in a side wall 12 of the box body 1, the extrusion mechanism 3 is arranged outside the box body 1, the extrusion mechanism 3 is connected to the side wall 12 of the box body 1 and is arranged at the test hole 11, and the extrusion mechanism 3 is used for extruding a sample so that a test surface of the sample faces the test hole 11. Specifically, one surface of the sample is used as a test surface, and the rest surfaces are non-test surfaces. The box body 1 is cubic, and a solution for corrosion test is stored in the box body 1. A test hole 11 is formed in one side wall 1 of the box body 1, the size and the shape of the test hole 11 are matched with the shape and the size of a test surface of a test sample, or the shape of the test hole 11 is matched with the shape of the test surface of the test sample, and the size of the test hole 11 is slightly larger than the size of the test surface of the test sample. The pressing mechanism 3 is connected to the outer wall of the side wall 12 of the case 1, and the pressing mechanism 3 corresponds to the position of the test hole 11. The sample is placed at the test hole 11, and the extrusion mechanism 3 extrudes the sample.
The extrusion mechanism is provided with a through hole, and the through hole is used for enabling a lead on one surface, opposite to the test surface, of the test sample to penetrate through. That is, the surface of the sample opposite to the test surface is provided with a lead wire, and the lead wire is inserted into the through hole of the squeezing mechanism 3 and is placed outside the squeezing mechanism 3. Specifically, one side of the sample is a testing side, the side opposite to the testing side is a non-testing side, and the non-testing side of the sample is connected with the first end of the lead. The extrusion mechanism 3 can be provided with a through hole, the wire penetrates through the through hole of the extrusion mechanism 3, and the second end of the wire is arranged outside the extrusion mechanism 3, so that the wire is connected with other devices conveniently.
When in use, a test sample is placed at the test hole 11, the test surface of the test sample faces the test hole 11, the pressing mechanism 3 presses the test sample, so that the test sample is tightly contacted with the test hole 11, and the test hole 11 is sealed. The lid 2 of the case 1 is opened, and a solution for corrosion test is injected into the case 1. Under the pressing action of the pressing mechanism 3, the test surface of the sample is fully contacted with the solution in the box body 1, and the solution is prevented from leaking from the test hole 11.
In the embodiment, the test hole 11 is formed in the side wall of the box body 1, the squeezing mechanism 3 squeezes the sample to enable the test surface of the sample to face the test hole 11, the test surface of the sample is ensured to be in contact with the solution in the box body 1, the non-test surface of the sample can be well packaged, the test hole is sealed, leakage of the box body 1 is effectively prevented, accuracy of a test result is improved, the sample can be effectively prevented from inclining under the squeezing action of the squeezing mechanism, only the test surface of the sample is ensured to be in stable contact with the solution in the box body 1, the operation is simple, the packaging time is shortened, and the problems that the packaging method in the prior art is poor in sealing effect, complex in operation and long in packaging time are solved; in addition, the device has less manual participation in the packaging process, reduces instability in the operation process, improves the packaging stability, and is suitable for batch tests.
Referring to fig. 1, 4 and 5, a preferred structure of the pressing mechanism in the corrosion test box according to the embodiment of the present invention is shown. In the above embodiment, the pressing mechanism 3 may include: threaded tube 31, nut 32 and connector 33. Wherein the threaded pipe 31 is connected to the side wall of the case 1, and the threaded pipe 31 is placed at the test hole 11. The nut 32 is screwed with the threaded pipe 31. Specifically, the inner diameter of the nut 32 matches the outer diameter of the threaded pipe 31, the inner wall of the nut 32 is provided with threads, and the nut 32 is sleeved outside the threaded pipe 31. The outer wall of the threaded pipe 31 is also provided with threads, and the nut 32 is threadedly coupled to the threaded pipe 31. Preferably, the nut 32 and the threaded pipe 31 are in triangular threaded connection to achieve better sealing and fixing effects. The inner diameter of the screw cap 32 has a smaller thread than the outer diameter of the threaded pipe 31, i.e. the thickness of the screw cap 32 (with respect to fig. 1) is smaller than the thickness of the threaded pipe 31 (with respect to fig. 1).
The connection member 33 is placed inside the threaded pipe 31, and the connection member 33 is in contact with the inner wall of the threaded pipe 31. Specifically, the shape of the connection piece 33 is matched with the shape of the inside of the threaded pipe 31 so that the outer wall of the connection piece 33 is in close contact with the inner wall of the threaded pipe 31. During screwing of nut 32 with threaded pipe 31, nut 32 is constantly pressing against connecting piece 33, since the internal diameter of nut 32 is less threaded than the external diameter of threaded pipe 31.
The connecting piece 33 is an elastic piece, the connecting piece 33 is provided with a through hole 331 along the axial direction, the sample is placed in the through hole 331, the shape of the through hole 331 is matched with that of the sample, and the connecting piece 33 is used for extruding the sample and sealing the test hole 11. Specifically, the connecting member 33 is provided with a through hole 331 penetrating the connecting member 33 along an axial direction thereof (a left-to-right direction shown in fig. 1). The test specimen is placed in the through-hole 331, and the test specimen is brought into close contact with the inner wall of the through-hole 331 with the test face of the test specimen facing the test well 11. When the screw cap 32 is screwed to the threaded pipe 31, the connecting piece 33 moves towards the test hole 11 under the extrusion action of the screw cap 32, because the connecting piece 33 has elasticity, and because the connecting piece 33 is in close contact with the inner wall of the threaded pipe 31, the connecting piece 33 is limited by the inner wall of the threaded pipe 31, the connecting piece 33 can deform under the extrusion action of the screw cap 32, and the connecting piece 33 extrudes the sample in the radial direction (the direction from top to bottom shown in fig. 1), so that the sample is in closer contact with the connecting piece 33, the separation of the sample is prevented, and the effect of fixing the sample is achieved.
The size of the test hole 11 is equal to or greater than the size of the test specimen, and in particular, when the size of the test hole 11 is greater than the size of the test specimen, the connection member 33 not only plays a role of fixing the test specimen, but also the connection member 33 can seal a portion of the test hole 11 greater than the size of the test specimen to prevent the solution in the case 1 from leaking through a gap between the test hole 11 and the test specimen. When the size of the test hole 11 is equal to the size of the test specimen, the connection member 33 compressively fixes the test specimen, and the connection member 33 can also seal the gap between the test hole 11 and the test specimen.
The nut 32 is provided with a through hole 321, and the conducting wire is disposed through the through hole 321 and outside the nut 32. Specifically, a through hole 321 penetrating through the nut 32 is formed in the center of the nut 32, and since the sample is placed in the through hole 331 of the connecting member 33, the lead wire disposed on the non-testing surface of the sample penetrates through the through hole 331 of the connecting member 33, and then the through hole 321 of the nut 32 is formed, and the second end of the lead wire is disposed outside the nut 32.
It can be seen that, in this embodiment, extrude the connector and then extrude the sample in the connecting piece 3 through nut 32 for the sample carries out relatively fixed with connecting piece 33, ensures that the test face of sample and the solution in the box 1 contact, and connecting piece 33 has still played the effect of sealing up the test hole, has prevented the weeping of box 1 effectively, and then has improved the accuracy of test result. And the shape of the through hole of the connecting piece is matched with the shape of the test sample, so that the connecting piece can be suitable for various sizes and shapes of the test samples, and the application range of the test box is enlarged. The extrusion mechanism is simple and convenient to operate, and greatly shortens the packaging time.
Referring to fig. 1 and 2, in the above embodiment, the connection member 33 may include: a first connector 332 and a second connector 333. The first connecting body 332 and the second connecting body 333 have elasticity, that is, the first connecting body 332 and the second connecting body 333 are elastic members.
A first end of the first connection body 332 corresponds to the test well 11, a second end of the first connection body 332 is connected to the second connection body 333, the second connection body 333 is in contact with the inner wall of the threaded pipe 31, and a radial distance of the first connection body 332 is smaller than that of the second connection body 333, and an outer wall of the first connection body 332 is inclined toward the inner wall of the threaded pipe 31. Specifically, taking the pressing mechanism 3 on the left side in fig. 1 as an example, a first end (right end shown in fig. 1) of the first connecting body 332 corresponds to the test hole 11, a second end (left end shown in fig. 1) of the first connecting body 332 is connected to a first end (right end shown in fig. 1) of the second connecting body 333, a second end (left end shown in fig. 1) of the second connecting body 333 is in contact with the nut 32, and the nut 32 is used to press the second end of the second connecting body 333. The shape of the second connection body 333 is matched with the shape of the inside of the threaded pipe 31 such that the outer wall of the second connection body 333 is in close contact with the inner wall of the threaded pipe 31. The central axis of the first connecting body 332 coincides with the central axis of the second connecting body 333, and the outer wall of the first connecting body 332 is inclined outward, so that the first connecting body 332 is trapezoidal, the top of the trapezoid corresponds to the test hole 11, and the bottom of the trapezoid is connected with the second connecting body 333.
The shape of the inner wall of the top end of the threaded pipe 31 matches the shape of the first connecting body 332, and specifically, the shape of the inside of the top end (the right end shown in fig. 1) of the threaded pipe 31 matches the shape of the junction of the first connecting body 332 and the second connecting body 333, that is, the junction of the inside of the threaded pipe 31 and the side wall 12 of the case 1 is provided with the annular connecting plate 4, the center of the connecting plate 4 is provided with a connecting hole which penetrates through the connecting plate 4, the inner wall of the connecting hole is obliquely arranged, the connecting hole corresponds to the test hole 11, and, the aperture of the connecting hole corresponding to the test hole 11 is the same as that of the test hole 11, while the aperture of the connecting hole far from the test hole 11 is larger than that of the test hole 11, the connection opening is trapezoidal in shape and the shape of the connection opening is matched to the shape of the first connecting part 33, so that the first connecting part 33 better seals the test opening 11. One end surface of the annular connecting plate 4 is connected to the side wall 12 of the case 1, and the other end surface of the connecting plate 4 is in close contact with the first end of the second connecting body 333.
The first connecting body 332 and the second connecting body 333 are both provided with through holes along an axial direction (a direction from left to right in fig. 1), and the through holes of the first connecting body 332 and the through holes of the second connecting body 333 are correspondingly provided to form through holes 331. Specifically, a first through hole penetrating through the first connecting body 332 is formed in the center of the first connecting body 332, a second through hole penetrating through the second connecting body 333 is also formed in the center of the second connecting body 333, the central axes of the first through hole and the second through hole coincide, the aperture of the first through hole is the same as that of the second through hole, and the shapes and sizes of the first through hole and the second through hole are matched with those of a sample, so that the through hole 331 of the connecting body 33 is formed by the first through hole and the second through hole, and the sample is placed in the through hole 331. In a specific implementation, the first connecting body 332 and the second connecting body 333 may be integrally formed, and the first through hole and the second through hole are through holes 331.
In specific implementation, the first end of the first connecting body 332 has a size matching the size of the first through hole.
The size of the test well 11 is larger than the size of the test specimen, and in particular, the size of the test well 11 is slightly larger than the size of the test specimen, so that the first connecting body 332 is at least partially placed in the test well 11 under the pressing action of the screw cap 32, thereby allowing the first connecting body 332 to better seal the test well 11 and ensuring that the test surface of the test specimen is in contact with the solution in the housing 1. Preferably, the size of the test hole 11 is greater than 10% of the size of the test sample, so that the first end of the elastic first connecting body 332 is squeezed into the test hole 11 to be in close contact with the test hole 11, and a better sealing effect is achieved. In specific implementation, since the sidewall of the case 1 has a certain thickness, the first end of the first connecting body 332 is pushed into the test hole 11 and is disposed at the wall thickness of the sidewall 12 of the case 1.
In use, a test sample is placed in the through hole 331 formed by the first through hole and the second through hole, the test sample is brought into close contact with the inner wall of the through hole 331, and the test surface of the test sample is directed toward the test hole 11. When the nut 32 is screwed and the nut 32 is moved toward the threaded pipe 31, the nut 32 presses the second connecting body 333 and further the first connecting body 332. Because the first connecting body 332 and the second connecting body 333 both have elasticity, and because the first connecting body 332 and the second connecting body 333 both closely contact the inner wall of the threaded pipe 31, the first connecting body 332 and the second connecting body 333 both are limited by the inner wall of the threaded pipe 31, the first connecting body 332 and the second connecting body 333 deform under the extrusion action of the nut 32, and the first connecting body 332 and the second connecting body 333 both radially (in the direction from top to bottom shown in fig. 1) extrude the sample, so that the sample more closely contacts the first connecting body 332 and the second connecting body 333, the sample is prevented from being separated, and the effect of fixing the sample is achieved. Since the size of the test hole 11 is larger than that of the test specimen, and the first connecting body 332 and the top end of the threaded pipe 31 are both trapezoidal, the first connecting body 332 and the second connecting body 333 are both moved toward the test hole 11 by the pushing and pushing action of the nut 32, so that the first connecting body 332 is pushed into the test hole 11. Since the side wall 12 of the case 1 has a certain thickness, the first end of the first connecting body 332 is pushed into the test hole 11 and is disposed at the wall thickness of the side wall 12 of the case 1, so that the first connecting body 332 seals the test hole 11, prevents the solution from leaking from the test hole 11, and allows the test surface of the test sample to better contact with the solution in the case 1.
It can be seen that, in this embodiment, squeeze first connecting body 332 into test hole 11 through nut 32, can seal test hole 11 better, prevent revealing of the interior solution of box 1 to can make the test face of sample contact with the interior solution of box 1 completely, simultaneously, only need twist nut 32 can, manual operation is simple, the uncertain factor in the operation process that has significantly reduced has shortened the encapsulation time, is suitable for batch test.
Referring to fig. 1, in the above embodiments, the pressing mechanism may further include: and a briquetting 34. Wherein, the pressing block 34 is disposed in the threaded pipe 31, and the pressing block 34 is in contact with the inner wall of the threaded pipe 31, and the nut 32 is used for pressing the connecting member 33 through the pressing block 34. Specifically, the pressing piece 34 has the same shape as the inner wall of the threaded pipe 31, so that the pressing piece 34 is in close contact with the inner wall of the threaded pipe 31. The nut 32 is in contact with the pressing piece 34, and the nut 32 presses the pressing piece 34 and thus the connecting piece 33. The shape and size of the pressing block 34 are the same as those of the second connecting body 333 in the connecting member 33, so that the pressing block 34 can conveniently extrude the second connecting body 333, and the sealing effect is also achieved.
The pressing block 34 is provided with a wire hole 341 penetrating through the pressing block 34 in the axial direction (the direction from left to right in fig. 1), the wire is sequentially inserted through the wire hole 341 and the insertion hole 321 of the nut 32, and the wire is placed outside the nut 32. Specifically, the wire hole 341 is disposed opposite to the through hole 321, a central axis of the wire hole 341 coincides with a central axis of the through hole 321, and the second end of the wire is disposed outside the nut 32.
It can be seen that, in this embodiment, by providing the pressing block 34, the nut 32 can extrude the connecting piece 33 by extruding the pressing block 34, so as to seal the test hole 11 and extrude and fix the test sample, and the pressing block 34 can provide better extrusion force and improve the sealing effect.
In the above embodiments, the connecting member 33 may be a rubber connecting member, and the threaded pipe 31, the nut 32, the first connecting body 332, the second connecting body 333 and the pressing block 34 may be made of PVC material. The PVC material has preset acid-base resistance and preset insulativity, and during specific implementation, the preset acid-base resistance and the preset insulativity can be determined according to actual conditions, and the embodiment does not limit the preset acid-base resistance and the preset insulativity.
Referring to fig. 1, 4 and 5, in each of the above embodiments, at least two side walls of the box body 1 are provided with test holes 11, at least two extrusion mechanisms 3 are provided, and each extrusion mechanism 3 is connected with each side wall in a one-to-one correspondence manner and is placed at the test holes 11; the test wells 11 are all of different sizes. Specifically, the number of the pressing mechanisms 3 may be two to four, each pressing mechanism 3 is connected to a different side wall of the box body 1, and each pressing mechanism 3 is disposed at the test hole 11 of the corresponding side wall. The sizes of the test holes 11 are different, and the sizes of the corresponding squeezing mechanisms 3 are different, so that the sizes of the corresponding samples in each squeezing mechanism 3 are different, that is, the squeezing mechanisms 3 respectively squeeze the samples with different sizes to test the samples with different sizes.
Taking two extrusion mechanisms 3 as an example, test holes 11 are formed on any two side walls of the box body 1. In this embodiment, a test hole 11 has been seted up to the relative lateral wall in the left and right sides of box 1, and two extrusion mechanisms 3 are connected in the lateral wall in the left and right sides of box 1 one-to-one respectively to, each extrusion mechanism 3 all places the test hole 11 department of the lateral wall that corresponds in. The sizes of the test holes 11 formed in the opposite side walls of the left side and the right side of the box body 1 are different, so that the sizes of the two squeezing mechanisms 3 are different, and correspondingly, the sizes of the samples squeezed by the squeezing mechanisms 3 are different. When the number of the squeezing mechanisms 3 is four, the four squeezing mechanisms 3 are respectively arranged on four side walls of the box body 1.
It can be seen that, in this embodiment, the number of the squeezing mechanisms 3 is at least two, so that a plurality of samples can be tested simultaneously, samples with different sizes can also be tested, the application range of the test box is enlarged, and the structure is simple.
Referring to fig. 3, in each of the above embodiments, the case cover 2 is provided with a plurality of electrode insertion openings 21, and the plurality of electrode insertion openings 21 may be provided according to actual requirements, so as to meet the placement requirements of various electrodes such as auxiliary electrodes and measuring electrodes at different distances in the corrosion test. Each electrode insertion opening 21 is a circular hole, and the inner diameter of the circular hole can be determined according to actual conditions, which is not limited in this embodiment.
In summary, in the embodiment, the test hole 11 is formed in the side wall of the box body 1, the squeezing mechanism 3 squeezes the sample so that the test surface of the sample faces the test hole 11, the test surface of the sample is ensured to be in contact with the solution in the box body 1, the non-test surface of the sample can be well packaged, the test hole is sealed, leakage of the box body 1 is effectively prevented, accuracy of a test result is improved, the sample can be effectively prevented from inclining under the squeezing action of the squeezing mechanism, only the test surface of the sample is ensured to be in stable contact with the solution in the box body 1, the operation is simple, and the packaging time is shortened; in addition, the device has less manual participation in the packaging process, reduces instability in the operation process, improves the packaging stability, and is suitable for batch tests.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (9)
1. A corrosion test chamber, comprising: the box body (1), a box cover (2) which can be covered and connected with the box body (1) and an extrusion mechanism (3) which is arranged outside the box body (1); wherein the content of the first and second substances,
a test hole (11) is formed in the side wall of the box body (1), the extrusion mechanism (3) is connected to the side wall of the box body (1) and is arranged at the test hole (11), and the extrusion mechanism (3) is used for extruding a sample so that the test surface of the sample faces the test hole (11);
the extrusion mechanism (3) is provided with a through hole, and the through hole is used for enabling a lead on one surface of the sample opposite to the test surface to penetrate through;
the pressing mechanism (3) includes: a threaded pipe (31), a nut (32) in threaded connection with the threaded pipe (31), and an elastic connecting piece (33); the threaded pipe (31) is connected to the side wall of the box body (1) and is arranged at the test hole (11), the connecting piece (33) is arranged in the threaded pipe (31) and is in contact with the inner wall of the threaded pipe (31), and the nut (32) is used for extruding the connecting piece (33); the size of the test hole (11) is larger than or equal to that of the test sample; the connecting piece (33) is provided with a through hole (331) along the axial direction, the sample is placed in the through hole (331), the shape of the through hole (331) is matched with that of the sample, and the connecting piece (33) is used for extruding the sample and sealing the test hole (11); the nut (32) is provided with the through hole (321), and the conducting wire penetrates through the through hole (321) and is arranged outside the nut (32).
2. Corrosion test chamber according to claim 1, characterized in that said connection (33) comprises: a first elastic connecting body (332) and a second elastic connecting body (333); wherein the content of the first and second substances,
a first end of the first connecting body (332) corresponds to the test hole (11), a second end of the first connecting body (332) is connected with the second connecting body (333), the second connecting body (333) is in contact with the inner wall of the threaded pipe (31), the radial distance of the first connecting body (332) is smaller than that of the second connecting body (333), and the outer wall of the first connecting body (332) is inclined towards the inner wall of the threaded pipe (31);
through holes are formed in the first connecting body (332) and the second connecting body (333) along the axial direction, and the through holes of the first connecting body (332) and the through holes of the second connecting body (333) are correspondingly formed into the through holes (331);
the shape of the inner wall of the top end of the threaded pipe (31) is matched with that of the first connecting body (332);
the size of the test hole (11) is larger than the size of the test specimen.
3. Corrosion test chamber according to claim 2, characterized in that the size of the test holes (11) is greater than 10% of the size of the test specimen.
4. Corrosion test cell according to claim 1, wherein the pressing mechanism (3) further comprises: a briquette (34); wherein the content of the first and second substances,
the pressing block (34) is arranged in the threaded pipe (31) and is in contact with the inner wall of the threaded pipe (31), and the screw cap (32) is used for pressing the connecting piece (33) through the pressing block (34);
the pressing block (34) is provided with a wire hole (341) penetrating through the pressing block (34) along the axial direction, and the wire is sequentially arranged in the wire hole (341) and the penetrating hole (321) in a penetrating way and is arranged outside the screw cap (32).
5. Corrosion test chamber according to claim 1, characterized in that the connection (33) is a rubber connection.
6. Corrosion test chamber according to claim 1, characterized in that the threaded tube (31) and the nut (32) are triangularly threaded.
7. Corrosion test chamber according to claim 1, characterized in that the threaded tube (31) and the nut (32) are both made of PVC material.
8. Corrosion test cell according to claim 1,
the box body (1) is provided with at least two side walls which are provided with the test holes (11), the number of the extrusion mechanisms (3) is at least two, and each extrusion mechanism (3) is correspondingly connected with each side wall one by one and is arranged at the test holes (11);
the sizes of the test holes (11) are different.
9. Corrosion test chamber according to claim 1, characterized in that the chamber cover (2) is provided with an electrode insertion opening (21).
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| CN201710571981.9A CN107561145B (en) | 2017-07-13 | 2017-07-13 | Corrosion test box |
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| CN201710571981.9A CN107561145B (en) | 2017-07-13 | 2017-07-13 | Corrosion test box |
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| CN107561145B true CN107561145B (en) | 2021-03-02 |
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| CN107561145A (en) | 2018-01-09 |
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