Material irradiation on-line loading device for nuclear reactor

Abstract

The invention provides a material irradiation on-line loading device for a nuclear reactor, which comprises a cylinder body, a material irradiation device, a material irradiation device and a material irradiation device, the sample mounting mechanism comprises a first mounting seat and a second mounting seat which are used for being connected with the two ends of the sample respectively, the first mounting seat is connected with one end of the cylinder, and the second mounting seat can move relative to the cylinder; the first pipe group comprises a pre-pressing corrugated pipe arranged in the inner cavity, two ends of the pre-pressing corrugated pipe are respectively connected with the barrel and the second mounting seat, and one end of the pre-pressing corrugated pipe is provided with a one-way air inlet communicated with air supply equipment; the second pipe set comprises an adjusting corrugated pipe arranged in the inner cavity, the two ends of the second pipe set are connected with the barrel and the second installation base respectively, and a gas inlet used for being communicated with external gas supply equipment is formed in one end of the second pipe set. The displacement sensor is connected with the cylinder body and provided with a displacement detection end connected with the second mounting seat, the material irradiation on-line loading device achieves accurate control over loading pressure in the experiment process, and the accuracy of the test result is effectively guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of reactor in-vessel testing, in particular to a material irradiation online loading device for a nuclear reactor. BACKGROUND

[0002] In the process of reactor in-vessel measurement, compared with the traditional irradiation test, the instrumented test method can enable researchers to observe the influence of various parameters on the measured fuel or material in real time, and therefore becomes the research focus of many research institutions. The online loading device which realizes the online loading function in the instrumented irradiation test is the basis and core of the test.

[0003] The online loading device for a nuclear reactor currently used mainly adopts the method of pre-charging compressed gas into the bellows of the loading device before the experiment, and then controlling the loading force of the bellows on the sample by controlling the temperature on the bellows during the experiment. However, this method cannot effectively change the loading force of the bellows on the test sample in a timely manner according to the deformation of the sample, and in the process of controlling the temperature on the bellows, the environmental temperature of the test will be inevitably affected, thereby affecting the accuracy of the test. SUMMARY

[0004] The technical problem to be solved by the present application is to overcome the poor test accuracy of the online loading device for a nuclear reactor in the prior art, and to provide a material irradiation online loading device for a nuclear reactor.

[0005] The present application solves the above technical problems by the following technical solutions:

[0006] The present application provides a material irradiation online loading device for a nuclear reactor, characterized in that it comprises a cylinder, a sample mounting mechanism, a first tube group, a second tube group and a displacement sensor, wherein the cylinder forms an inner chamber; the sample mounting mechanism comprises a first mounting seat and a second mounting seat, the first mounting seat and the second mounting seat are respectively used to connect with both ends of the sample, wherein the first mounting seat is connected with one end of the cylinder, and the second mounting seat is movable relative to the cylinder; the first tube group comprises a pre-press bellows, the pre-press bellows is arranged in the inner chamber, one end of the pre-press bellows is connected with the cylinder, the other end of the pre-press bellows is connected with the second mounting seat, and one end of the pre-press bellows is formed with a one-way gas inlet communicating with an external gas supply device; the second tube group comprises an adjusting bellows, the adjusting bellows is arranged in the inner chamber, one end of the adjusting bellows is connected with the cylinder, the other end of the adjusting bellows is connected with the second mounting seat, and one end of the adjusting bellows is provided with a gas inlet for communicating with the external gas supply device; the displacement sensor is connected with the cylinder, the displacement sensor has a displacement detection end, and the displacement detection end is connected with the second mounting seat.

[0007] Preferably, the first pipe group further comprises a first end plate and a second end plate coaxially arranged, both of which are arranged in the inner chamber, and both ends of the pre-pressing bellows are connected with the first end plate and the second end plate respectively; the first end plate is provided with an air inlet hole for connecting the one-way air inlet with an external air supply device, and the second end plate is connected with the second mounting base.

[0008] Preferably, a one-way ball valve is arranged at the air inlet hole; and / or, a sealing cover is further arranged at the air inlet hole.

[0009] Preferably, the adjusting bellows, the pre-pressing bellows, the second mounting base and the first mounting base are all arranged in the cylinder body in sequence along the axial direction of the cylinder body, and the other end of the pre-pressing bellows and the other end of the adjusting bellows are both arranged towards the second mounting base; the cylinder body comprises an intermediate connecting plate, the first end plate is fixed in the inner chamber through the intermediate connecting plate, the intermediate connecting plate is provided with a first avoiding hole, the first pipe group further comprises a first force transmission rod, one end of the first force transmission rod is connected with the other end of the adjusting bellows, and the other end of the first force transmission rod passes through the first avoiding hole and is connected with the second mounting base.

[0010] Preferably, the material irradiation online loading device further comprises a third mounting base, which is arranged outside the cylinder body and relative to the first mounting base, and the displacement sensor is arranged between the first mounting base and the third mounting base; the material irradiation online loading device further comprises a plurality of supporting rods, and the first mounting base and the third mounting base are connected through the plurality of supporting rods.

[0011] Preferably, the displacement sensor further comprises a second force transmission rod, the first mounting base is provided with a second avoiding hole, one end of the second force transmission rod is connected with the displacement detection end, and the other end of the second force transmission rod passes through the second avoiding hole and is connected with the second mounting base.

[0012] Preferably, the second end plate and the second mounting base are in an integrated structure.

[0013] Preferably, the first mounting base is connected with the cylinder body, the second mounting base is arranged outside the cylinder body and is connected with the displacement sensor; the sample mounting mechanism comprises a third force transmission rod, one end of the third force transmission rod is connected with the second end plate, the first mounting base is provided with a third avoiding hole, and the other end of the third force transmission rod passes through the third avoiding hole and is connected with the second mounting base.

[0014] Preferably, the barrel comprises a guide sleeve, an upper end cover and a lower end cover, the upper end cover and the lower end cover are respectively covered at both ends of the guide sleeve to jointly enclose the inner chamber with the guide sleeve; the first mounting seat is in an integral structure with the lower end cover.

[0015] Preferably, the second pipe group comprises a third end plate and a fourth end plate coaxially arranged; one end of the adjusting bellows is connected with the third end plate, and the other end of the adjusting bellows is connected with the fourth end plate; the third end plate is connected with the barrel, and the fourth end plate is arranged at a position close to the pre-pressing bellows in the inner chamber, and the other end of the adjusting bellows is connected with the second mounting seat through the fourth end plate.

[0016] On the basis of common sense in the art, the above-mentioned preferred conditions can be combined arbitrarily, that is, the preferred embodiments of the present application are obtained.

[0017] The positive progress effect of the present application is that:

[0018] The material irradiation online loading device for nuclear reactors provided by the present application comprises a barrel, a sample mounting mechanism, a first pipe group and a second pipe group, so as to mount the sample on the barrel through the sample mounting mechanism, a one-way gas inlet communicating with an external gas supply device is arranged on the pre-pressing bellows of the first pipe group, and the other end of the pre-pressing bellows is connected with a second mounting seat for connecting the sample, so as to realize the axial force of the pre-pressing bellows on the sample by the deformation of the pre-pressing bellows due to inflation. On this basis, the adjusting bellows of the second pipe group is also connected with the second mounting seat, and the adjusting bellows is provided with a gas inlet for communicating with the external gas supply device. In this way, during the test, the axial force on the sample can also be adjusted online by inflating the adjusting bellows, so as to ensure the accuracy of the test results, and therefore the precise control of the loading pressure during the experiment is realized, and the accuracy of the test results is effectively ensured. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The structure schematic view of the material irradiation online loading device for nuclear reactors provided by the present application embodiment one.

[0020] Figure 2 The sectional view of the material irradiation online loading device for nuclear reactors provided by the present application embodiment one.

[0021] Figure 3 The structure schematic view of the material irradiation online loading device for nuclear reactors provided by the present application embodiment one. Figure 2 The local structure schematic view of part A in the middle.

[0022] Figure 4 The local structure schematic view of part B in the middle. Figure 2 The local structure schematic view of part B in the middle.

[0023] Figure 5 Figure 2 is a partial structural schematic view of the middle C part. Figure 2 Figure 3 is a partial structural schematic view of the middle C part.

[0024] Figure 6 Figure 4 is a structural schematic view of the first pipe group and the second pipe group of the material irradiation online loading device for nuclear reactors provided by the embodiment one of the present application.

[0025] Figure 7 Figure 5 is a structural schematic view of the sample mounting mechanism and the displacement sensor of the material irradiation online loading device for nuclear reactors provided by the embodiment one of the present application.

[0026] Figure 8 Figure 6 is a structural schematic view of the material irradiation online loading device for nuclear reactors provided by the embodiment two of the present application.

[0027] Figure 9 Figure 7 is a sectional view of the material irradiation online loading device for nuclear reactors provided by the embodiment two of the present application.

[0028] Figure 10 Figure 8 is a partial structural schematic view of the middle D part. Figure 9 Figure 9 is a partial structural schematic view of the middle D part.

[0029] Figure 11 Figure 10 is a partial structural schematic view of the middle E part. Figure 9 Figure 11 is a partial structural schematic view of the middle E part.

[0030] Figure 12 Figure 12 is a structural schematic view of the sample mounting mechanism and the displacement sensor of the material irradiation online loading device for nuclear reactors provided by the embodiment two of the present application.

[0031] BRIEF DESCRIPTION OF THE DRAWINGS

[0032] 1. barrel; 10, inner chamber; 11, guide sleeve; 12, upper end cover; 13, lower end cover; 14, intermediate connecting plate; 141, first avoiding hole;

[0033] 2. sample mounting mechanism; 21, first mounting seat; 211, first insertion hole; 212, second avoiding hole; 213, third avoiding hole; 22, second mounting seat; 221, second insertion hole; 23, butt joint hole; 24, fastener; 25, third force transmission rod;

[0034] 3. first pipe group; 31, pre-press corrugated pipe; 311, one-way air inlet; 32, first end plate; 321, air inlet hole; 33, second end plate; 34, one-way ball valve; 35, sealing cover;

[0035] 4. second pipe group; 41, adjusting corrugated pipe; 411, gas inlet; 42, air inlet pipe; 43, first force transmission rod; 44, third end plate; 45, fourth end plate;

[0036] 5. Displacement sensor; 51. Displacement detection end; 52. Second force transmission rod;

[0037] 6. Third mounting bracket;

[0038] 7. Support rod;

[0039] 100. Sample. Detailed Implementation

[0040] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0041] Example 1

[0042] like Figures 1-7 As shown, this embodiment of the invention provides an online material irradiation loading device for nuclear reactors, which includes a cylinder 1, a sample mounting mechanism 2, a first tube group 3, and a second tube group 4.

[0043] The cylinder 1 has an inner cavity 10 inside. The sample mounting mechanism 2 includes a first mounting seat 21 and a second mounting seat 22. The first mounting seat 21 and the second mounting seat 22 are respectively used to connect to both ends of the sample. The first mounting seat 21 is connected to one end of the cylinder 1.

[0044] The first mounting base 21 is connected to one end of the cylinder 1, thereby mounting the sample on the cylinder 1. In a specific implementation, the first mounting base 21 and the second mounting base 22 can both be located outside the cylinder 1, or at least one of them can be located inside the inner cavity 10 of the cylinder 1.

[0045] Based on this, the first pipe assembly 3 includes a pre-compression bellows 31, which is disposed in the inner chamber 10 of the cylinder 1. One end of the pre-compression bellows 31 is connected to the cylinder 1, and the other end is connected to the second mounting base 22. Further, one end of the pre-compression bellows 31 has a one-way air inlet 311 for connecting to an external gas supply device, which allows gas to enter the first pipe cavity. The second pipe assembly 4 includes an adjusting bellows 41, which is disposed in the inner chamber 10 of the cylinder 1. One end of the adjusting bellows 41 is connected to the cylinder 1, and the other end is connected to the second mounting base 22. Further, one end of the adjusting bellows 41 has a gas inlet 411 for connecting to an external gas supply device.

[0046] Furthermore, the online irradiation loading device for nuclear reactor materials also includes a displacement sensor 5, which is connected to the cylinder 1. The displacement sensor 5 has a displacement detection end 51, which is connected to the second mounting base 22.

[0047] In a specific implementation, the pre-pressing bellows 31 is used to pre-charge a certain pressure of compressed gas at normal temperature, and one end of the pre-pressing bellows 31 is provided with a one-way gas inlet 311, so that the gas can be charged into the pre-pressing bellows 31 from outside. The gas charged into the pre-pressing bellows 31 can exert a larger internal pressure on the pre-pressing bellows 31, so that the pre-pressing bellows 31 has a tendency to be elongated in the axial direction. Since the other end of the pre-pressing bellows 31 is connected to the second mounting base 22, the pre-pressing bellows 31 will generate an axial force on the second mounting base 22, and the axial force will further act on the sample through the second mounting base 22.

[0048] Correspondingly, the adjusting bellows 41 is used to provide an axial force on the sample during the test. Specifically, the adjusting bellows 41 is provided with a gas inlet 411 for communicating with an external gas supply device. During the test, if the axial force acting on the sample needs to be adjusted online, the gas inlet 411 of the adjusting bellows 41 can be connected to the external gas supply device, so that the adjusting bellows 41 is inflated, and the inflated gas can increase the internal pressure of the adjusting bellows 41, so that the adjusting bellows 41 has a tendency to be elongated in the axial direction. Since the other end of the adjusting bellows 41 is also connected to the second mounting base 22, the adjusting bellows 41 can also generate an axial force on the second mounting base 22, and further act on the sample.

[0049] Since the first mounting base 21 is connected to the cylinder 1, and the displacement sensor 5 is arranged on the cylinder 1, the end of the sample connected to the first mounting base 21 remains fixed relative to the cylinder 1 and the displacement sensor 5. The axial forces of the pre-pressing bellows 31 and the adjusting bellows 41 on the sample are both applied to the second mounting base 22, so the position of the second mounting base 22 can change, and correspondingly, the sample will deform, and the degree of deformation reflects the effect of the pre-pressing bellows 31 and the adjusting bellows 41 on the sample.

[0050] Further, the displacement detection end 51 of the displacement sensor 5 is connected to the second mounting base 22, so the displacement sensor 5 can detect the deformation of the sample, thereby facilitating the experimental personnel to obtain the deformation data of the sample.

[0051] It can be seen that, since the pre-charge of compressed gas cannot be used to adjust the axial force on the sample online during the test, the embodiment of the present application additionally provides the adjusting bellows 41 to realize the online adjustment of the axial force during the test, instead of adjusting the axial force of the adjusting bellows 41 on the sample by controlling the temperature of the bellows.

[0052] In summary, the material irradiation online loading device for nuclear reactors provided by the embodiment of the present application is configured by the barrel 1, the sample mounting mechanism 2, the first pipe group 3 and the second pipe group 4, so as to mount the sample on the barrel 1 through the sample mounting mechanism 2, the one-way gas inlet 311 of the pre-press bellows 31 of the first pipe group 3 is configured to be communicated with the external gas supply device, the other end of the pre-press bellows 31 is connected with the second mounting seat 22 for connecting the sample, so as to realize the axial force of the pre-press bellows 31 on the sample by the inflation deformation of the pre-press bellows 31, on this basis, the adjusting bellows 41 of the second pipe group 4 is also connected with the second mounting seat 22, and the adjusting bellows 41 is configured with the gas inlet 411 for being communicated with the external gas supply device, so that the axial force on the sample can also be adjusted online by inflating the adjusting bellows 41 during the test, so as to ensure the accuracy of the test results, and thus the precise control of the loading pressure during the test is realized, and the accuracy of the test results is effectively ensured.

[0053] The first mounting seat 21 and the second mounting seat 22 form a mounting space for mounting the experiment, that is, the sample is located between the first mounting seat 21 and the second mounting seat 22. Therefore, in some embodiments, the two ends of the sample can be connected with the first mounting seat 21 and the second mounting seat 22 respectively.

[0054] For example, the first mounting seat 21 is specifically configured with the first jack 211, the second mounting seat 22 is configured with the second jack 221, and the two ends of the sample are inserted into the first jack 211 and the second jack 221 respectively. Correspondingly, the side walls of the two ends of the sample and the side walls of the first mounting seat 21 and the second mounting seat 22 are also provided with the butt joint holes 23, the fasteners 24 are commonly arranged in the butt joint holes 23 of the first mounting seat 21 and one end of the sample to realize the fixed connection of the one end of the sample and the first mounting seat 21, and the fasteners 24 are commonly arranged in the butt joint holes 23 of the second mounting seat 22 and the other end of the sample to realize the fixed connection of the other end of the sample and the second mounting seat 22, which can be specifically referred to Figure 4 and Figure 5 . Wherein, the fastener 24 is, for example, a screw. In addition, the first mounting seat 21 and the second mounting seat 22 can also be connected through

[0055] On the basis of the above, the barrel 1 can further include a guide sleeve 11, an upper end cover 12 and a lower end cover 13, the upper end cover 12 and the lower end cover 13 are respectively arranged at both ends of the guide sleeve 11 to seal the inside of the guide sleeve 11 to form the inner chamber 10, the pre-press bellows 31 and the adjusting bellows 41 are arranged inside the guide sleeve 11. In order to facilitate the adjusting bellows 41 to be inflated during the test, one end of the adjusting bellows 41 can be connected with the upper end cover 12 and can be exposed from the upper end cover 12, so as to be communicated with the external inflation equipment. Specifically, the second pipe group 4 can further include an air inlet pipe 42, one end of the air inlet pipe 42 is communicated with one end of the adjusting bellows 41, and the other end of the air inlet pipe 42 is used to communicate with the external inflation equipment.

[0056] It should be noted that the setting positions of the first mounting seat 21 and the second mounting seat 22 of the sample mounting mechanism 2 relative to the pre-press bellows 31 and the adjusting bellows 41 can be set according to the use requirements. For example, when the sample is subjected to tensile loading, the pre-press bellows 31, the adjusting bellows 41 and the first mounting seat 21 can be located on the same side of the second mounting seat 22, and the end of the pre-press bellows 31 and the adjusting bellows 41 which tends to axially elongate is arranged towards the second mounting seat 22, that is, the end of the sample connected with the first mounting seat 21 is fixed, and the pre-press bellows 31 and the adjusting bellows 41 act on the second mounting seat 22, that is, the axial force of the second mounting seat 22 is formed, at this time, the axial force is to push the other end of the sample to move away from the first mounting seat 21, that is, the sample produces tensile deformation.

[0057] Correspondingly, for example, when the sample is subjected to pressure loading, the pre-press bellows 31 and the adjusting bellows 41 can be located on one side of the second mounting seat 22, and the first mounting seat 21 can be located on the other side of the second mounting seat 22, and the end of the pre-press bellows 31 and the adjusting bellows 41 which tends to axially elongate is arranged towards the second mounting seat 22, so that the axial force caused by the gas pressure filled in the pre-press bellows 31 and the adjusting bellows 41 pushes the second mounting seat 22 and the other end of the sample to move towards the first mounting seat 21, at this time, the sample produces compression deformation.

[0058] For example, in this embodiment, the pressure loading on the sample is taken as an example for description. It should be noted that in other embodiments, the material irradiation online loading device for nuclear reactors can also be adaptively adjusted so as to be directly applied to the test of tensile loading on the sample.

[0059] Please refer to Figure 6As shown, in some embodiments, the first tube group 3 further comprises a first end plate 32 and a second end plate 33 coaxially arranged, both of which are arranged in the inner chamber 10, and the two ends of the pre-press corrugated pipe 31 are connected with the first end plate 32 and the second end plate 33 respectively. Further, the first end plate 32 is provided with an air inlet hole 321 for connecting the one-way air inlet 311 with the external air supply device, and the second end plate 33 is connected with the second mounting seat 22.

[0060] In a specific implementation, the first end plate 32 can be connected and fixed with the cylinder body 1 to ensure that the end of the pre-press corrugated pipe 31 provided with the one-way air inlet 311 is fixed relative to the cylinder body 1, and the second end plate 33 is arranged at the opposite end of the pre-press corrugated pipe 31 and connected with the second mounting seat 22, so that the axial force generated by the pre-press corrugated pipe 31 can act on the second mounting seat 22 and the sample. In this way, the position of the pre-press corrugated pipe 31 relative to the cylinder body 1 is fixed, and at the same time, the axial force of the pre-press corrugated pipe 31 can fully act on the second mounting seat 22 and the sample.

[0061] In a specific implementation, the guide sleeve 11 can be provided with an intermediate connecting plate 14, and the first end plate 32 is connected with the cylinder body 1 through the intermediate connecting plate 14. Further, the second end plate 33 and the second mounting seat 22 can be arranged in an integrated structure, thereby simplifying the number of parts of the material irradiation online loading device and facilitating maintenance and assembly.

[0062] In addition, in order to ensure the stability of the gas pressure in the pre-press corrugated pipe 31 after the pre-press corrugated pipe 31 is filled with air through the air inlet hole 321 in the first end plate 32 and the one-way air inlet 311 of the pre-press corrugated pipe 31, in some embodiments, a one-way ball valve 34 can be arranged at the air inlet hole 321. Please refer to Figure 3 As shown.

[0063] In a specific implementation, the one-way ball valve 34 is arranged in the air inlet hole 321 of the pre-press corrugated pipe 31 to play a check valve role, i.e. to prevent the gas in the pre-press corrugated pipe 31 from leaking out of the air inlet hole 321. When the pre-press corrugated pipe 31 is filled with air by the external air filling device, the pressure of the gas will push the valve ball of the one-way ball valve 34 away from the valve seat, so that the gas can flow around the ball and through the gap between the ball and the valve body. When the air filling is completed, the ball falls back to the valve seat to automatically cut off the flow channel and prevent the gas from flowing back.

[0064] Further, in some embodiments, a sealing cover 35 can also be arranged at the air inlet hole 321. In a specific implementation, the sealing cover 35 can be fixed on the outside of the air inlet hole 321 by welding to prevent gas leakage at the air inlet hole 321 due to temperature changes during the test, which affects the test accuracy.

[0065] Since the adjusting bellows 41, the pre-pressing bellows 31, the second mounting base 22 and the first mounting base 21 can be sequentially arranged along the axial direction of the cylinder body 1 when the pressure is loaded on the sample, and the other end of the pre-pressing bellows 31 and the other end of the adjusting bellows 41 are both arranged towards the second mounting base 22.

[0066] That is, the pre-pressing bellows 31 and the adjusting bellows 41 are arranged on one side of the second mounting base 22, the first mounting base 21 is arranged on the other side of the second mounting base 22, and the adjusting bellows 41 is arranged on the side of the pre-pressing bellows 31 away from the second mounting base 22 since it needs to be communicated with the external inflation equipment.

[0067] On this basis, in order to enable the axial force of the other end of the adjusting bellows 41 to act on the second mounting base 22, in some embodiments, the second pipe group 4 can further include a first force transmission rod 43, one end of the first force transmission rod 43 is connected to the other end of the adjusting bellows 41, and correspondingly, a first avoiding hole 141 is formed on the intermediate connecting plate 14, and the other end of the first force transmission rod 43 can pass through the first avoiding hole 141 and be connected to the second mounting base 22 on the other side of the pre-pressing bellows 31.

[0068] In this way, when the axial force is applied to the sample through the second end plate 33 of the pre-pressing bellows 31, the axial force of the other end of the adjusting bellows 41 can be applied to the sample without the position of the pre-pressing bellows 31, ensuring the realization of the two kinds of forces.

[0069] On the basis of the above, when the second pipe group 4 is arranged, the second pipe group 4 can further include a third end plate 44 and a fourth end plate 45 arranged coaxially, and the two ends of the adjusting bellows 41 are connected to the third end plate 44 and the fourth end plate 45 respectively. Further, the third end plate 44 can be directly connected to the upper end cover 12 of the cylinder body 1, and one end of the adjusting bellows 41 and the air inlet pipe 42 are exposed from the upper end cover 12, so as to be connected to the external inflation equipment. The fourth end plate 45 is arranged at a position close to the pre-pressing bellows 31 in the cylinder body 1.

[0070] On this basis, the first force transmission rod 43 can be correspondingly connected to the fourth end plate 45 arranged at the other end of the adjusting bellows 41, so as to transmit the axial force of the other end of the adjusting bellows 41 to the second mounting base 22 and the sample through the force transmission rod.

[0071] As shown in Figure 2 In some embodiments, the second pipe group 4 and the sample mounting mechanism 2 can be arranged at the two ends of the cylinder body 1 respectively. Specifically, the air inlet pipe 42 of the second pipe group 4 passes out of the upper end cover 12 of the cylinder body 1, and the sample mounting mechanism 2 is arranged at the lower end cover 13 of the cylinder body 1.

[0072] Further, the first mounting base 21 of the sample mounting mechanism 2 is connected with the lower end plate of the cylinder 1, and the second mounting base 22 of the sample mounting mechanism 2 is located in the guide sleeve 11 of the cylinder 1 and is movable relative to the cylinder 1. In an example, the first mounting base 21 of the sample mounting mechanism 2 and the lower end plate of the cylinder 1 can be formed in an integrated structure to reduce the number of structures and ensure the stability of the structure during use.

[0073] As shown in Figure 1 and Figure 7 In some embodiments, the material irradiation online loading device can further include a third mounting base 6 located outside the cylinder 1 and arranged relative to the first mounting base 21, and the displacement sensor 5 is arranged between the first mounting base 21 and the third mounting base 6. On this basis, the material irradiation online loading device can further include a plurality of support rods 7, and the third mounting base 6 and the first mounting base 21 are connected by the plurality of support rods 7.

[0074] Further, the displacement sensor 5 further includes a second force transmission rod 52, and a second avoiding hole 212 is formed in the first mounting base 21, one end of the second force transmission rod 52 is connected to the displacement detection end 51, and the other end of the second force transmission rod 52 passes through the second avoiding hole 212 and is connected to the second mounting base 22. That is, through the above arrangement, the movement of the second mounting base 22 inside the cylinder 1 can be detected by the displacement sensor 5 arranged outside the cylinder 1 to obtain the deformation degree of the sample.

[0075] On the basis of the above, when installing the displacement sensor 5, the two ends of the displacement sensor 5 are connected with the first mounting base 21 and the third mounting base 6 respectively, then the displacement detection end 51 of the displacement sensor 5 is located at a position close to the first mounting base 21, and the second force transmission rod 52 connected to the displacement detection end 51 passes through the second avoiding hole 212 in the first mounting base 21 and is connected with the second mounting base 22 inside the cylinder 1.

[0076] In this way, when the sample is fixed inside the cylinder 1 by the first mounting base 21, the axial force applied to the sample by the pre-pressing bellows 31 and the adjusting bellows 41 acts on the second mounting base 22 inside the cylinder 1, thereby applying pressure to the second mounting base 22, the sample is shortened and deformed, and the second mounting base 22 transmits the deformation amount to the displacement detection end 51 of the displacement sensor 5 through the second force transmission rod 52 passing through the first mounting base 21, so that the displacement sensor 5 obtains the deformation data of the sample.

[0077] Example Two

[0078] As shown in Figures 8-12As shown, the embodiment of the present application also provides a material irradiation online loading device for a nuclear reactor, which is different from the material irradiation online loading device for a nuclear reactor provided in the first embodiment in that the present embodiment takes a tensile loading on a sample as an example for illustration.

[0079] It should be noted that in other embodiments, the material irradiation online loading device for a nuclear reactor can also be adapted so as to be directly applied in a test of pressure loading on a sample.

[0080] As shown in Figure 9 and Figure 10 In some embodiments, the first mounting seat 21 of the sample mounting mechanism 2 is connected to the cylinder 1, and the second mounting seat 22 of the sample mounting mechanism 2 is located outside the cylinder 1 and is connected to the displacement sensor 5. On this basis, the sample mounting mechanism 2 further comprises a third force transmission rod 25, one end of which is connected to the second end plate 33, and at the same time, a third avoiding hole 213 is formed in the first mounting seat 21, and the other end of the third force transmission rod 25 passes through the third avoiding hole 213 and is connected to the second mounting seat 22.

[0081] Specifically, the second mounting seat 22 of the sample mounting mechanism 2 is connected to the displacement sensor 5, specifically to the displacement detection end 51 of the displacement sensor 5. Since the third force transmission rod 25 can pass through the first mounting seat 21 and be connected to the second mounting seat 22, when the pre-pressing bellows 31 axially deforms, the deformation can be transmitted to the second mounting seat 22 through the second end plate 33 and the third force transmission rod 25. Since the first mounting seat 21 is fixed relative to the cylinder 1, and the second mounting seat 22 is located outside the cylinder 1, the deformation will act on the second mounting seat 22 to generate a tensile force on the sample. The deformation of the sample caused by the tensile force can be connected to the second mounting seat 22 of the displacement detection end 51 of the displacement sensor 5, so as to be acquired and recorded by the displacement sensor 5.

[0082] In a specific implementation, the first mounting seat 21 and the lower end cover 13 of the cylinder 1 can also be integrated into one structure, which can reduce the number of structures and further ensure the structural stability during use.

[0083] Although the specific embodiments of the present application are described above, those skilled in the art should understand that this is only an example, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, and such changes and modifications all fall within the protection scope of the present application.

Claims

1. An online irradiation loading device for materials used in nuclear reactors, characterized in that, include: The cylindrical body has an internal cavity; The sample mounting mechanism includes a first mounting base and a second mounting base, which are respectively used to connect to both ends of the sample. The first mounting base is connected to one end of the cylinder, and the second mounting base is movable relative to the cylinder. The first pipe assembly includes a pre-compression corrugated pipe, which is disposed in the inner cavity. One end of the pre-compression corrugated pipe is connected to the cylinder body, and the other end of the pre-compression corrugated pipe is connected to the second mounting base. Furthermore, one end of the pre-compression corrugated pipe forms a one-way air inlet that connects to an external air supply device. The second pipe assembly includes an adjusting bellows, which is disposed in the inner chamber. One end of the adjusting bellows is connected to the cylinder, and the other end of the adjusting bellows is connected to the second mounting base. Furthermore, one end of the adjusting bellows is provided with a gas inlet for communicating with an external gas supply device. A displacement sensor is connected to the cylinder body. The displacement sensor has a displacement detection end, which is connected to the second mounting base.

2. The online irradiation loading device for materials used in nuclear reactors as described in claim 1, characterized in that, The first tube assembly also includes a first end plate and a second end plate coaxially arranged, both of which are located in the inner cavity. The two ends of the pre-compressed corrugated pipe are respectively connected to the first end plate and the second end plate. The first end plate has an air inlet hole for connecting the one-way air inlet to an external air supply device, and the second end plate is connected to the second mounting base.

3. The online irradiation loading device for materials used in nuclear reactors as described in claim 2, characterized in that, A one-way ball valve is provided at the air inlet; and / or, The air inlet is also equipped with a sealing cap.

4. The online irradiation loading device for materials used in nuclear reactors as described in claim 2, characterized in that, The adjusting bellows, the pre-compression bellows, the second mounting base and the first mounting base are all located inside the cylinder and are arranged sequentially along the axial direction of the cylinder. Furthermore, the other end of the pre-compression bellows and the other end of the adjusting bellows are both positioned towards the second mounting base. The cylinder includes an intermediate connecting plate, and the first end plate is fixed in the inner cavity through the intermediate connecting plate. The intermediate connecting plate has a first clearance hole. The second pipe group also includes a first force transmission rod. One end of the first force transmission rod is connected to the other end of the adjusting bellows, and the other end of the first force transmission rod passes through the first clearance hole and is connected to the second mounting base.

5. The online irradiation loading device for materials used in nuclear reactors as described in claim 4, characterized in that, The online material irradiation loading device further includes a third mounting base, which is located outside the cylinder and is disposed relative to the first mounting base. The displacement sensor is disposed between the first mounting base and the third mounting base. The online material irradiation loading device also includes several support rods, and the third mounting base is connected to the first mounting base through the several support rods.

6. The online irradiation loading device for materials used in nuclear reactors as described in claim 5, characterized in that, The displacement sensor also includes a second force transmission rod. The first mounting base has a second clearance hole. One end of the second force transmission rod is connected to the displacement detection end, and the other end of the second force transmission rod passes through the second clearance hole and is connected to the second mounting base.

7. The online irradiation loading device for materials used in nuclear reactors as described in claim 2, characterized in that, The second end plate and the second mounting base are an integral structure.

8. The online irradiation loading device for materials used in nuclear reactors as described in claim 2, characterized in that, The first mounting base is connected to the cylinder body, and the second mounting base is located outside the cylinder body and connected to the displacement sensor; The sample mounting mechanism includes a third force transmission rod, one end of which is connected to the second end plate. A third clearance hole is provided on the first mounting base, and the other end of the third force transmission rod passes through the third clearance hole and is connected to the second mounting base.

9. The online irradiation loading device for materials used in nuclear reactors as described in claim 8, characterized in that, The cylinder includes a guide sleeve, an upper end cover, and a lower end cover. The upper end cover and the lower end cover are respectively installed at both ends of the guide sleeve to form the inner cavity together with the guide sleeve. The first mounting base and the lower end cover are an integral structure.

10. The online irradiation loading device for materials used in nuclear reactors as described in any one of claims 1-9, characterized in that, The second tube assembly includes a third end plate and a fourth end plate arranged coaxially; one end of the adjusting bellows is connected to the third end plate, and the other end of the adjusting bellows is connected to the fourth end plate; The third end plate is connected to the cylinder, and the fourth end plate is located in the inner chamber near the pre-compression bellows. The other end of the adjusting bellows is connected to the second mounting base through the fourth end plate.

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