CN114486520A - Device for testing performance of rusted containment steel lining and bolt welding area - Google Patents
Device for testing performance of rusted containment steel lining and bolt welding area Download PDFInfo
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- CN114486520A CN114486520A CN202210024978.6A CN202210024978A CN114486520A CN 114486520 A CN114486520 A CN 114486520A CN 202210024978 A CN202210024978 A CN 202210024978A CN 114486520 A CN114486520 A CN 114486520A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/32—Polishing; Etching
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
Abstract
The invention discloses a device for testing the performance of a welding area of a containment vessel steel lining and a bolt after rusting, which comprises: the steel lining test piece comprises a steel lining plate, studs welded on the steel lining plate and concrete poured between the steel lining plate, wherein the welding areas of the steel lining plate and the studs are connected with leads, and the local corrosion of the welding areas of the steel lining plate and the studs is realized through the electrochemical accelerated corrosion of the leads; and the loading device is provided with a clamp connected with the steel lining test piece, and loads are applied to the steel lining test piece through the clamp. Compared with the prior art, in the test device for the performance of the rusted containment steel lining and bolt welding area, the steel lining plate and the bolt are welded according to the welding requirement of the containment of a nuclear power plant, the lead is reserved in the steel lining plate and the bolt welding area, concrete is poured between the steel lining plates, local rusting of the steel lining plate and the bolt welding area is realized through electrochemical rusting, and the mechanical performance of the rusted steel lining plate and the bolt welding area can be tested through loading of the loading device.
Description
Technical Field
The invention belongs to the technical field of nuclear power, and particularly relates to a device for testing performance of a welding area of a containment steel lining and a bolt after rusting.
Background
The nuclear energy has large unit energy and abundant resource reserves, and is a well-known economic, safe and clean energy source which can replace conventional energy sources in a large range. With the trend that the construction of nuclear power plants in China enters a high-speed development stage and the nuclear power plants develop from coastal areas to inland areas, the safety of the nuclear power plants must be paid high attention.
The containment vessel is used as a last barrier for measures related to nuclear safety, and is a most concerned performance if the containment vessel can sufficiently cope with high energy load (expressed by high temperature, high pressure and high humidity) under severe accident conditions, and the containment vessel can ensure that radioactive substances do not leak under the high energy load or the leakage can be controlled to a small degree with little influence on the environment. The integrity of a safety barrier of a nuclear power unit is directly determined by the sealing performance of a containment vessel steel lining, the tearing characteristic of the steel lining is directly related to the sealing performance of the containment vessel, and if the containment vessel structure cannot bear high-energy load under an accident exceeding the design standard to cause the tearing of the steel lining, the sealing performance of the containment vessel is failed, and radioactive substance leakage is bound to occur.
A large number of surveys show that the corrosion of the steel lining is a key factor influencing the containment tightness, and the mechanical property of the steel lining is directly reduced due to the corrosion. Although a certain degree of corrosion is allowed in the design, due to the fact that the thickness of the steel lining is relatively thin (generally about 6 mm), corrosion exceeding the allowable range easily causes tearing of the steel lining in a serious accident, and potential threats are brought to safe operation of a nuclear power plant.
The steel lining of the containment vessel is anchored with concrete through the studs and the angle steels, the welding positions of the studs and the steel lining are stress concentration areas, and stress redistribution of the steel lining can be caused under the action of load. Under the action of severe accident load exceeding the design standard, the steel lining of the containment vessel interacts with concrete, and in addition, the influence of stud shearing force on the steel lining causes the stress state of the steel lining to be very complex, and the steel lining is possibly torn under a lower stress level due to the stress concentration of a welding area and the influence of the stud shearing force. The risk of the shear of the stud causing the steel lining to tear is further increased if the steel lining in the area of the weld with the stud is corroded.
At present, the research on the mechanical property of the steel lining and the bolt welding area after rusting is lacked, and the influence of the shear force of the bolt on the tearing mechanism of the rusted steel lining is not clear. Because of the particularity of the containment structure of the nuclear power plant, it is necessary to design a device for testing the performance of the rusted containment steel lining and bolt welding area under laboratory conditions, so as to obtain reliable test data and provide reference for the design, detection and maintenance of the containment steel lining of the nuclear power plant.
Disclosure of Invention
The invention aims to: the device overcomes at least one defect in the prior art and provides a device for testing the performance of a welding area of a steel lining and a bolt of a containment vessel which can be executed under laboratory conditions after rusting.
In order to achieve the above object, the present invention provides a device for testing the performance of a steel lining and a bolt welding area of a containment vessel after corrosion, comprising:
the steel lining test piece comprises a steel lining plate, studs welded on the steel lining plate according to the nuclear power plant containment welding requirement, and concrete poured between the steel lining plate, wherein the steel lining plate and the stud welding area are connected with leads, and the local corrosion of the steel lining plate and the stud welding area is realized through the leads through electrochemical accelerated corrosion; and
and the loading device is provided with a clamp connected with the steel lining test piece, and loads are applied to the steel lining test piece through the clamp.
According to one embodiment of the device for testing the performance of the rusted welding area of the steel lining and the bolt of the containment vessel, the steel lining plates are symmetrically arranged on two sides of the concrete, the root parts of the bolts are symmetrically welded in the middle of the steel lining plate, and the end parts of the bolts are embedded in the concrete.
According to one embodiment of the test device for the performance of the rusted containment vessel steel lining and bolt welding area, the steel lining test piece is provided with prestressed threaded steel bars symmetrically embedded at the upper end and the lower end of the concrete.
According to one embodiment of the test device for the performance of the rusted containment vessel steel lining and bolt welding area, steel base plates are installed at the upper end and the lower end of the steel lining test piece, through holes are formed in the steel base plates, and the upper side and the lower side of the prestressed threaded steel bar are fixed by nuts after penetrating through the through holes.
According to one embodiment of the device for testing the performance of the rusted containment vessel steel lining and bolt welding area, a displacement sensor is arranged on the steel bottom plate.
According to one embodiment of the device for testing the performance of the rusted containment vessel steel lining and bolt welding area, the steel bottom plate is welded and connected with the steel top plate, the steel top plate is provided with the mounting hole, and the steel pull rod is mounted in the mounting hole.
According to one embodiment of the device for testing the performance of the rusted containment vessel steel lining and bolt welding area, the steel top plate is provided with a hemispherical mounting hole, and the bottom end of the steel pull rod is hemispherical and matched with the hemispherical mounting hole.
According to one embodiment of the device for testing the performance of the rusted containment vessel steel lining and bolt welding area, the hemispherical bottom end of the steel pull rod can freely rotate in the hemispherical mounting hole of the steel top plate.
According to one embodiment of the device for testing the performance of the rusted containment vessel steel lining and bolt welding area, the steel pull rod is connected with the load sensor, the part, extending out of the steel top plate, of the steel pull rod is provided with an external thread, the load sensor is correspondingly provided with an internal thread, and the load sensor is installed on the steel pull rod through threaded connection.
According to one embodiment of the test device for the performance of the rusted containment vessel steel lining and bolt welding area, the top of the load sensor is provided with a threaded steel bar for being connected with a clamp of the loading device.
In addition, the invention also provides a preparation method of the steel lining test piece for testing the performance of the welding area of the containment steel lining and the bolt after corrosion, which comprises the following steps:
s1: providing a pair of steel lining plates, and respectively welding the studs in the middles of the pair of steel lining plates according to the welding process requirements of the containment steel lining plates and the studs of the nuclear power plant;
s2: uniformly coating metal antirust paint and epoxy resin on the steel lining plate and the stud welded in the step S1 in sequence, removing the antirust paint and the epoxy resin on the stud welding area after the epoxy resin is hardened, and connecting a lead in the welding area where the epoxy resin is removed;
s3: manufacturing a mould, reserving through holes on the mould, fixing the steel lining plates welded with the studs in the step S2 on two sides of the mould, penetrating the prestressed threaded ribs through the reserved through holes on the mould, sealing the through holes by using glass cement, and pouring concrete into the mould to obtain a steel lining test piece; and
s4: and (5) performing wet curing on the steel lining test piece obtained in the step (S3), and performing electrochemical corrosion on the steel lining test piece to obtain the steel lining test piece for testing the performance of the containment vessel steel lining and the bolt welding area after corrosion.
According to the improvement of the preparation method of the steel lining test piece for the performance test of the rusted containment steel lining and bolt welding area, after the welding in the step S1 is completed, the nondestructive test is carried out on the welding seam of the steel lining inner plate and the bolt.
According to an improvement of the preparation method of the steel lining test piece for the performance test of the rusted containment vessel steel lining and bolt welding area, in step S3, a plurality of prestressed threaded steel bars are arranged at intervals at two ends of the mould respectively.
In addition, the invention also provides a steel lining test piece for testing the performance of the welding area of the containment steel lining and the bolt after rusting, which is obtained by adopting the preparation method of the steel lining test piece for testing the performance of the welding area of the containment steel lining and the bolt after rusting.
Compared with the prior art, in the device for testing the performance of the rusted containment vessel steel lining and the bolt welding area, the steel lining plate and the bolt are welded according to the welding requirements of the containment vessel of a nuclear power plant, the lead is reserved in the steel lining plate and the bolt welding area, concrete is poured between the steel lining plates, local rusting of the steel lining plate and the bolt welding area is realized through electrochemical rusting, a load is applied to a steel lining test piece through a loading device, and the mechanical performance of the rusted steel lining plate and the rusted bolt welding area can be tested under the laboratory condition.
Drawings
The following describes in detail the performance testing device and the technical effects thereof after rusting of the welding area of the containment vessel steel lining and the bolt in combination with the accompanying drawings and the specific embodiments, wherein:
FIG. 1 is a schematic structural diagram of a device for testing the performance of a steel lining and a bolt welding area of a containment vessel after corrosion.
FIG. 2 is a front view of a steel lining test piece in the test device for the performance of the welding area of the containment vessel steel lining and the bolt after rusting.
FIG. 3 is a cross-sectional view of a steel lining test piece in the test device for the performance of the containment vessel after corrosion of the welding area of the steel lining and the bolt.
Fig. 4 to 6 are a front view, a side view and a top view of a steel top plate in the test device for the performance of the steel lining of the containment vessel and the bolt welding area after corrosion respectively.
FIG. 7 is a schematic structural diagram of a steel tie rod in the test device for the performance of the welded area of the containment vessel steel lining and the stud after corrosion.
Fig. 8 and 9 are a front view and a top view of a steel bottom plate in a test device for the performance of a steel lining for containment vessel after corrosion at a bolt welding area according to the present invention.
In the figure:
1- -steel lining board; 2- -stud; 3-prestressed twisted steel; 4- -concrete; 5- -steel top plate; 6- -steel tie rod; 7- -steel bottom plate; 8- -load cell; 9- -displacement sensor; 10- -a nut; 11- -tensile tester chuck; 12- -tensile tester beam; 13- -tensile testing machine base.
Detailed Description
In order to make the objects, technical solutions and technical effects of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 9, the present invention provides a device for testing performance of a steel lining and a bolt welding area of a containment vessel after corrosion, which comprises:
the steel lining test piece comprises a steel lining plate 1, studs 2 welded on the steel lining plate 1 according to the welding requirement of the containment vessel of the nuclear power plant, and concrete 4 poured between the steel lining plates 1, wherein the welding areas of the steel lining plate 1 and the studs 2 are connected with leads (not shown), and the local corrosion of the welding areas of the steel lining plate 1 and the studs 2 is realized through the electrochemical accelerated corrosion of the leads; and
and the loading device is provided with a clamp connected with the steel lining test piece, and loads are applied to the steel lining test piece through the clamp.
Referring to fig. 2 and 3, the steel lining plate test piece is manufactured as follows:
(1) welding the steel lining plate 1 and the stud 2: cutting according to the size of 350mm multiplied by 300mm to obtain two steel lining plates 1 with the thickness of 6mm, wherein the steel lining plates 1 are made of P265GH type steel adopted by BS EN 10028-2:2017 'Steel plate Standard for European pressure vessels'; according to the welding process and requirements of the containment steel lining plates 1 and the studs 2 of the nuclear power plant, the studs 2 are respectively welded in the middle parts of the two steel lining plates 1, each steel lining plate 1 is provided with four studs 2, the transverse and longitudinal distances of the studs 2 are 150mm, the studs 2 are ML15 AL-type studs, the diameter of the studs is 8mm, and the length of the studs is 80 mm; and after welding, carrying out nondestructive testing on the welding seam.
(2) Manufacturing a die and fixing the steel lining plate 1 and the prestressed twisted steel 3: manufacturing a wood die with the inner dimension of 350mm multiplied by 212mm multiplied by 300mm, reserving through holes of the prestressed threaded steel bars 3 on the die, wherein the distance between the through holes is 100mm, and the prestressed threaded steel bars 3 adopt PSB785 type prestressed threaded steel bars with the diameter of 30mm and the length of 450 mm; uniformly coating metal antirust paint on the welded steel lining plate 1 and the stud 2, uniformly coating epoxy resin with the thickness of about 2mm after the antirust paint is dried, and removing the antirust paint and the epoxy resin on the steel lining of the stud welding area by using an angle grinder after the epoxy resin is hardened; fixing welded steel lining plates 1 with studs 2 at two sides of a mould; the prestressed threaded steel bars 3 penetrate through the through holes reserved in the die, the holes are sealed by glass cement, three prestressed threaded steel bars 3 are arranged at two ends of the die respectively, and the intervals between the steel bars at the two ends are 30 mm.
(3) Pouring concrete 4 and carrying out corrosion: 2 leads are respectively bound and fixed in the area where the epoxy resin is ground on the steel lining to finish the corrosion of the welding area; then pour concrete 4 and carry out abundant vibration with the vibrting spear to guarantee that concrete 4 is closely knit, concrete strength level is C50, and length is 350mm, and the width is 300mm, and thickness is 200mm, and the mix proportion is according to cement: blending materials: medium sand: small crushed stone: large crushed stone: water: the water reducing agent is prepared according to the proportion of 1:0.137:1.37:0.798:1.862:0.319:0.016, wherein the cement is ordinary portland cement with the strength grade of 52.5, the admixture is S95 slag powder, small broken stones refer to stones with the particle size of 5-10mm, large broken stones refer to stones with the particle size of 10-20mm, and the water reducing agent is a PC-J100 type polycarboxylic acid high-efficiency water reducing agent; after the pouring of the test piece is finished, covering a preservative film on the surface and maintaining for 28 days in wet water; and then placing the whole test piece in an electrolyte solution pool for electrochemical corrosion, wherein the corrosion only occurs in a welding area for fixing a lead due to the protection of the antirust paint and the epoxy resin on the steel lining plate 1 and the stud 2.
Referring to fig. 1 in particular, the connection mode of the loading device is: the steel pull rod 6 penetrates through a mounting hole reserved in the middle of the steel top plate 5, and the steel top plate 5 and the steel bottom plate 7 are welded to form a clamp; the prestressed threaded steel bars 3 at the upper end and the lower end of the test piece penetrate through the through holes in the steel base plate 7, and the upper side and the lower side of the steel base plate 7 are fixed by nuts 10; the load sensor 8 is connected through the connection of the thread on the steel pull rod 6 and the threaded hole reserved at the bottom of the load sensor 8, and the threaded hole reserved at the top of the load sensor 8 is also connected with a threaded steel bar for clamping with the testing machine; clamping the twisted steel at the top of the load sensor 8 by a chuck 11 at the upper part of the testing machine, and clamping the steel pull rod 6 at the lower part of the test piece by a chuck 11 at the lower part of the testing machine; the displacement sensors 9 are symmetrically arranged on the upper surface of the steel bottom plate 7 through fixed supports.
After the connection is completed, loading can be performed. Referring to fig. 1, a base 13 of a tensile testing machine is fixed on the ground, force on a cross beam 12 of the tensile testing machine is transmitted to a prestressed threaded steel bar 3 at the upper end of a test piece through a chuck 11 of the tensile testing machine and a clamp, the prestressed threaded steel bar 3 makes concrete 4 be pulled through adhesive force between the concrete 4, the pulled deformation of the concrete 4 drives a stud 2 embedded in the concrete 4 to be sheared, and the shearing force of the stud 2 is transmitted to a steel lining plate 1, so that tensioning of the test piece is completed.
Referring to fig. 4 to 6, the steel top plate 5 is made of Q235B steel, and the steel top plate 5 has a length of 150mm, a width of 150mm and a thickness of 50 mm; the middle part of the steel top plate 5, which is 25mm away from the bottom surface, is a concave hemispherical surface, and the diameter of a hemispherical hole is 48 mm; a round hole is arranged in the middle of the steel top plate and is 25mm away from the top surface, and the diameter of the round hole is 42 mm; 1Q 235B steel plates with the length of 150mm, the width of 150mm and the thickness of 50mm are respectively welded on two sides of the steel top plate 5.
Referring to fig. 7, the steel pull rod 6 is made of Q235B type steel with a length of 175 mm; the bottom end of the steel pull rod 6 is hemispherical, the diameter of the steel pull rod is 48mm, and the diameter of the steel pull rod is matched with the diameter of the hemispherical surface at the bottom of the steel top plate. The top end of the steel pull rod 6 is cylindrical, the diameter of the cylinder is 34mm, and the cylinder is provided with threads.
Referring to fig. 8 and 9, the steel bottom plate 7 is made of Q235B steel, and has a length of 300mm, a width of 150mm, and a thickness of 50 mm. The steel bottom plate 7 is provided with three holes for fixing the prestressed threaded steel bars 3, the holes are oval, the length of the semi-long axis is 23mm, and the length of the semi-short axis is 19.5 mm.
In combination with the above detailed description of the embodiments of the present invention, it can be seen that, compared with the prior art, the apparatus for testing the performance of the welding area of the steel lining and the stud of the containment vessel of the present invention after corrosion has the following advantages:
firstly, after a steel lining plate 1 and a stud 2 in a steel lining test piece are welded according to the relevant welding requirements of a containment vessel of a nuclear power plant, a lead is pre-buried at the joint of the end part of the stud 1 and the steel lining plate 2, then concrete 4 is poured between the two steel plates, after the concrete 4 is hardened, local corrosion of the welding area of the steel lining plate 1 and the stud 2 can be finished through the method of electrochemical accelerated corrosion of the lead, and finally, the mechanical property of the rusted welding area of the steel lining plate 1 and the stud 2 is tested through a tensile test, so that the influence of the rusted stud on the tearing mechanism of the steel lining after the welding area of the steel lining plate 1 and the stud 2 is obtained, and a reliable test basis can be provided for the aging property evaluation and the sealing property evaluation of the containment vessel of the nuclear power plant.
Secondly, the clamp of the loading device is simple to process and manufacture, flexible and convenient to use and good in loading stability, the semi-spherical contact mode is arranged on the contact surface of the steel top plate 5 and the steel pull rod 6, so that the steel top plate and the steel pull rod can flexibly rotate, the tension is guaranteed to be always vertical, and the influence of eccentricity can be effectively reduced; the inner diameter of the upper part of the steel top plate 5 is slightly larger than the diameter of the cylindrical end of the steel pull rod 6, so that the rotation angle between the upper part and the cylindrical end can be kept within a proper range, and the lower section of a test piece is prevented from toppling to damage equipment and personnel when the test piece is broken; the joint of the steel bottom plate 7 and the prestressed threaded steel bar 3 is provided with a nut for fixing, and the loading end can be controlled to be strictly kept horizontal in the test process by adjusting the nut, so that the influence of eccentricity can be further reduced. The whole loading device is compact in structure, reasonable in design, safe and reliable, can be repeatedly used, can well perform unidirectional stretching on the test piece, and obtains stable test data.
The present invention can be modified and adapted appropriately from the above-described embodiments, according to the principles described above. Therefore, the present invention is not limited to the specific embodiments disclosed and described above, and modifications and variations of the present invention are also intended to fall within the scope of the appended claims. Furthermore, although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (14)
1. A test device for performance of a steel lining and a bolt welding area of a containment vessel after corrosion is characterized by comprising:
the steel lining test piece comprises a steel lining plate, studs welded on the steel lining plate according to the nuclear power plant containment welding requirement, and concrete poured between the steel lining plate, wherein the steel lining plate and the stud welding area are connected with leads, and the local corrosion of the steel lining plate and the stud welding area is realized through the leads through electrochemical accelerated corrosion; and
and the loading device is provided with a clamp connected with the steel lining test piece, and loads are applied to the steel lining test piece through the clamp.
2. The apparatus for testing the performance of the steel lining and the bolt welding area of the containment vessel after corrosion according to claim 1, wherein the steel lining plates are symmetrically arranged on two sides of the concrete, the root parts of the bolts are symmetrically welded in the middle of the steel lining plates, and the end parts of the bolts are embedded in the concrete.
3. The device for testing the performance of the steel lining and the bolt welding area of the containment vessel after corrosion according to claim 1, wherein the steel lining test piece is provided with prestressed threaded steel bars symmetrically embedded at the upper end and the lower end of the concrete.
4. The device for testing the performance of the rusted welding area of the steel lining and the stud of the containment vessel according to claim 3, is characterized in that steel bottom plates are installed at the upper end and the lower end of the steel lining test piece, through holes are formed in the steel bottom plates, and the prestressed threaded steel bars penetrate through the through holes and are fixed by nuts.
5. The device for testing the performance of the rusted steel lining and bolt welding area of the containment vessel according to claim 4, wherein a displacement sensor is arranged on the steel bottom plate.
6. The device for testing the performance of the rusted welding area of the steel lining and the stud of the containment vessel of claim 4, wherein the steel bottom plate is welded and connected with a steel top plate, the steel top plate is provided with a mounting hole, and a steel pull rod is mounted in the mounting hole.
7. The device for testing the performance of the rusted steel lining and bolt welding area of the containment vessel as recited in claim 6, wherein the steel top plate is provided with a hemispherical mounting hole, and the bottom end of the steel pull rod is hemispherical and matched with the hemispherical mounting hole.
8. The apparatus for testing the performance of the steel lining and the bolt welding area of the containment vessel after corrosion according to claim 7, wherein the hemispherical bottom end of the steel tie rod can freely rotate in the hemispherical mounting hole of the steel top plate.
9. The device for testing the performance of the rusted welding area of the steel lining and the stud of the containment vessel of claim 6 is characterized in that a load sensor is connected onto the steel pull rod, the steel pull rod extends out of the steel top plate to form an external thread, the load sensor is correspondingly provided with an internal thread, and the load sensor is installed on the steel pull rod through threaded connection.
10. The apparatus for testing the performance of the steel lining of the containment vessel after being corroded at a bolt welding area according to claim 9, wherein a threaded steel bar is arranged at the top of the load sensor and is used for being connected with a clamp of the loading device.
11. A preparation method of a steel lining test piece for testing performance of a welding area of a containment steel lining and a stud after corrosion is characterized by comprising the following steps:
s1: providing a pair of steel lining plates, and respectively welding the studs in the middles of the pair of steel lining plates according to the welding process requirements of the containment steel lining plates and the studs of the nuclear power plant;
s2: uniformly coating metal antirust paint and epoxy resin on the steel lining plate and the stud welded in the step S1 in sequence, removing the antirust paint and the epoxy resin on the stud welding area after the epoxy resin is hardened, and connecting a lead in the welding area where the epoxy resin is removed;
s3: manufacturing a mould, reserving through holes on the mould, fixing the steel lining plates welded with the studs in the step S2 on two sides of the mould, penetrating the prestressed threaded ribs through the reserved through holes on the mould, sealing the through holes by using glass cement, and pouring concrete into the mould to obtain a steel lining test piece; and
s4: and (5) performing wet curing on the steel lining test piece obtained in the step (S3), and performing electrochemical corrosion on the steel lining test piece to obtain the steel lining test piece for testing the performance of the containment vessel steel lining and the bolt welding area after corrosion.
12. The method of claim 11, wherein the weld of the steel lining panel and the stud is non-destructively inspected after the welding of step S1 is completed.
13. The method of claim 11, wherein in step S3, the two ends of the mold each have a plurality of pre-stressed rebars spaced apart.
14. A steel lining test piece for testing the performance of a steel lining of a containment vessel after rusting at a bolt welding area is characterized by being prepared by the preparation method of any one of claims 11 to 13.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210024978.6A CN114486520A (en) | 2022-01-11 | 2022-01-11 | Device for testing performance of rusted containment steel lining and bolt welding area |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210024978.6A CN114486520A (en) | 2022-01-11 | 2022-01-11 | Device for testing performance of rusted containment steel lining and bolt welding area |
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| CN114486520A true CN114486520A (en) | 2022-05-13 |
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| CN202210024978.6A Pending CN114486520A (en) | 2022-01-11 | 2022-01-11 | Device for testing performance of rusted containment steel lining and bolt welding area |
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| CN (1) | CN114486520A (en) |
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