Metal crevice corrosion simulation device and metal crevice corrosion simulation experiment method

[0066] This embodiment provides a simulation device for metal crevice corrosion, referring to figure 1 and figure 2 As shown, it includes a bottom support plate 1 , a top cover plate 2 , a pressurized backing plate 3 , a support screw 4 and a prefabricated gap gasket 6 . An experimental pipe 7 is sandwiched between a pair of prefabricated gap gaskets 6 arranged up and down. The prefabricated gap gaskets 6 arranged up and down are fixed by the top cover plate 2 above and the bottom support plate 1 below. In this embodiment, the top cover plate 2 is in contact with the pressure pad 3 .

[0067] Refer to the shape of the top cover 2 Figure 4 As shown, the shape of the bottom support plate 1 refers to image 3 shown. In this embodiment, three installation holes are provided on the bottom support plate 1, refer to image 3 As shown, the two mounting holes on the left are used to install the support screw 4, and the support screw 4 supports the bottom support plate 1 and the...

[0093] This embodiment provides a simulation device for metal crevice corrosion in a symmetrical arrangement, referring to Figure 7 As shown, the only difference from Embodiment 1 is that in this embodiment, pressure pads 3 and support screws 4 are arranged symmetrically on both sides of the top cover plate 2, and the number of support screws 4 is four (two pairs). , each pair of adjacent supporting screw rods 4 is used to support the pressurized backing plate 3 and the bottom supporting plate 1 . The pressure pads 3 arranged on both sides of the top cover 2 apply downward pressure to compress the top cover 2 and the prefabricated gap gasket 6 to ensure that the experimental pipe 7 does not move sideways.

[0094] All the other structures are the same as in Example 1, and the method of use is also the same as in Example 1.

[0096] This embodiment provides a simulation device for asymmetrically arranged metal crevice corrosion, refer to Figure 8 As shown, it includes a bottom support plate 1 , a top cover plate 2 , a pressurized backing plate 3 , a support screw 4 , a first rotating shaft 8 , a second rotating shaft 9 , a T-shaped plate 10 and a prefabricated gap gasket 6 .

[0097] One end of the bottom supporting plate 1 is pierced with a first rotating shaft 8, the first rotating shaft 8 runs through the bottom supporting plate 1 transversely, and both ends of the first rotating shaft 8 are connected in series with rollers, and each roller is provided with a The support hole of the support screw 4 is installed, the top of the support screw 4 is fixedly connected with the pressure backing plate 3, the bottom end of the support screw 4 is fixedly connected with the support hole of the roller, and the support screw 4 can rotate around the first rotation axis 8, and the top One end of the cover pl...