Impact pressure loading device and measuring method

Abstract

The invention discloses an impact pressure loading device and a measuring method.The impact pressure loading device comprises a first pressure bearing surface (1), a second pressure bearing surface (2), a liquid injection pipe (4) and a pressure guiding pipe (7), and the first pressure bearing surface (1) and the second pressure bearing surface (2) are parallel to each other and arranged at an interval to form two opposite end faces of the impact pressure loading device; the first pressure bearing surface (1) and the second pressure bearing surface (2) form a cavity (6), the liquid injection pipe (4) and the pressure drawing pipe (7) are both communicated with the cavity (6) and extend to the outside of the impact pressure loading device, the impact pressure loading device is annularly installed on the periphery of an embedded structure of a test piece according to the embedded structure of the test piece, and the stress module and the impact pressure loading device are installed in an embedded mode. The device and the method are suitable for measurement of different annular belts such as the top, the bottom and the middle part of a reactor pit, meet the pressure measurement requirements of a complex structure at different positions, and provide reliable data support for comprehensive evaluation of structural response.

Description

Technical Field

[0001] The present invention relates to the field of pressure automatic loading and measurement, and particularly relates to an impact pressure loading device and a measurement method. Background Art

[0002] In the case of a severe accident in a nuclear power plant where heat cannot be effectively removed, core melting may occur. When the high-temperature core melt directly contacts water, a steam explosion will occur, bringing risks of damage or even collapse to adjacent structures and equipment. Therefore, in the existing nuclear power plant designs, various means have been adopted to eliminate the risk of steam explosion or mitigate its accident consequences, such as in-vessel retention technology for core melt, core catcher technology, special types of reactor cavity structure design technology, etc. According to the principle of defense in depth, in addition to the above technical measures to eliminate from the source, relevant research should also be carried out from the perspective of enhancing the safety of the internal structure of the reactor pit and preventing secondary disasters, so as to provide the nuclear power plant with a bottom-line defense capability. Relevant regulations and specifications in the domestic and international nuclear industries also put forward relevant requirements for the design of the internal structure of the reactor pit. When conducting a steam explosion accident analysis, the assessment of the response behavior of the internal structure of the reactor cavity directly subjected to the steam explosion is an important part. Since it is necessary to accommodate and support multiple large and heavy equipment including the reactor pressure vessel and steam generator, and also take into account the function of radiation shielding, the internal structure of the reactor pit is not a traditional typical beam, slab, column, or wall structure, but a complex structure system roughly composed of a circular thick wall, a thick bottom plate, and a vertical ring wall. Its behavior and bearing capacity limit under the special load of a steam explosion are the key points and difficulties in the assessment.

[0003] Currently, when designing the relevant pressure-bearing test, the stressed structure is a circular reactor pit structure, and the loading module is a frustum-shaped drop hammer. Under this form of impact load, there are the following problems in the measurement of the load on the stress surface of the reactor pit structure:

[0004] (1) In a normal drop hammer test, loading is carried out in the direction of gravity, and the force on the drop hammer is the load borne by the structure. However, the current experimental scheme changes the direction of the force, and the gravity load is converted into pressure on the circular interface through a wedge block. At this time, the force on the drop hammer is no longer the load borne by the structure, so it is necessary to measure the load borne by the inner surface of the reactor pit.

[0005] (2) The dynamic load obtained in the current test is likely to damage the reactor pit structure. Therefore, when conducting an impact test, effective protection measures and optimized test schemes must be taken to ensure the safety of the test process and the reliability of the test results.

[0006] (3) The selection of the measurement points for the force on the inner surface of the reactor pit. In this experiment, three annular bands are selected as the force measurement points: the top of the reactor pit, the bottom of the reactor pit, and the middle part of the reactor pit. In this scenario with impact load, it is difficult to use conventional force sensors.

[0007] In the patent document US10494059B2, a system for monitoring or controlling the impact load generated by a fluid under internal / external forces in a specific environment is disclosed, including a floating device horizontally arranged in a certain amount of fluid in an open space or a sealed chamber, a position adjusting device vertically connected to the floating device and positioned in the fluid, a sensing device arranged in the fluid, the floating device, the position adjusting device, or the surrounding structure sensing the measurement object. The controller predicts / monitors and predicts / controls the hydrodynamic-related forces, hull stresses, six-degree-of-freedom motions, and the positions related to a vehicle or a marine structure. The floating device, the position adjusting device, and the sensing device are installed thereon, and the values from the measurement object transmitted from the sensing device are used. It does not solve the problem of how to accurately measure the load borne by the inner surface of the reactor pit under complex conditions of changing the direction of the force and applying an impact load, effectively protect the reactor pit structure from damage, and at the same time solve the problem that conventional force sensors are difficult to apply.

[0008] In the patent document CN110018101A, a mechanical experiment system for shock wave plugging removal evaluation is disclosed, including a clamping device having at least one core holder; a coupling device; a shock wave generating device connected to the clamping device through the coupling device; a liquid supply pressure tank having a confining pressure output end, an injection pressure output end, and a liquid injection output end; the liquid supply pressure tank is respectively connected to the core holder through the confining pressure output end, the injection pressure output end, and the liquid injection output end; a liquid storage device respectively connected to the liquid supply pressure tank and the shock wave generating device. It does not solve the problem of how to accurately measure the load borne by the inner surface of the reactor pit under complex conditions of changing the direction of the force and applying an impact load, effectively protect the reactor pit structure from damage, and at the same time solve the problem that conventional force sensors are difficult to apply.

[0009] In summary, neither of the above two existing patents solves the problem of how to accurately measure the load borne by the inner surface of the reactor pit under complex conditions of changing the direction of the force and applying an impact load, effectively protect the reactor pit structure from damage, and at the same time solve the problem that conventional force sensors are difficult to apply. Summary of the Invention

[0010] Based on the above technical problems, the present invention proposes an impact pressure loading device and a measurement method to solve the problem of how to accurately measure the load borne by the inner surface of the reactor pit under complex conditions of changing the direction of the force and applying an impact load, effectively protect the reactor pit structure from damage, and at the same time solve the problem that conventional force sensors are difficult to apply.

[0011] To achieve the above object, the present invention proposes an impact pressure loading device.

[0012] An impact pressure loading device includes a first pressure bearing surface, a second pressure bearing surface, a liquid injection pipe, and a pressure guiding pipe. The first pressure bearing surface and the second pressure bearing surface are parallel to each other and arranged at intervals, forming two opposite end faces of the impact pressure loading device. A cavity is formed between the first pressure bearing surface and the second pressure bearing surface. The liquid injection pipe and the pressure guiding pipe are both communicated with the cavity and extend to the outside of the impact pressure loading device.

[0013] Further, it includes a sealing gasket, and the sealing gasket is arranged between the first pressure bearing surface and the second pressure bearing surface.

[0014] Further, the sealing gasket, the first pressure bearing surface, and the second pressure bearing surface surround to form the cavity.

[0015] Further, it includes a fluid working medium, and the fluid working medium is injected into the cavity through the liquid injection pipe.

[0016] Further, the fluid working medium is hydraulic oil, deionized water, water-ethylene glycol mixture, silicone oil, or compressed air.

[0017] Further, the cavity is filled with the fluid working medium through the liquid injection pipe, and the pressure of the fluid working medium inside the cavity is 0.15 Mpa - 0.25 Mpa.

[0018] Further, it includes a liquid storage core, and the liquid storage core is arranged between the first pressure bearing surface and the second pressure bearing surface.

[0019] Further, the material of the liquid storage core is sponge.

[0020] Further, it includes a pressure sensor, and the pressure sensor is arranged outside the impact pressure loading device at the extending position of the pressure guiding pipe.

[0021] Further, the materials of the first pressure bearing surface and the second pressure bearing surface are low-carbon steel, so that the first pressure bearing surface and the second pressure bearing surface are deformable.

[0022] To achieve the above object, the present invention also proposes an impact pressure measurement method.

[0023] An impact pressure measurement method is characterized by including:

[0024] S1: According to the embedded structure of the test piece, the impact pressure loading device is annularly installed on the circumference of the embedded structure of the test piece, and the force-bearing module is fitted and installed with the impact pressure loading device;

[0025] S2: Open the liquid injection pipe to add the fluid working medium;

[0026] S3: Close the liquid injection tube, open the pressure guiding tube, release the force application module, and measure the pressure data.

[0027] Further, in the step S1, it further includes:

[0028] The impact pressure loading device is fitted with the force receiving module, and one surface of the first pressure bearing surface or the second pressure bearing surface is mutually attached to one surface of the force receiving module.

[0029] Further, in the step S2, it further includes:

[0030] Install a pressure sensor at the extension position of the pressure guiding tube.

[0031] Further, in the step S2, it further includes:

[0032] During the process of filling the fluid medium, measure the pressure data through the pressure sensor until the pressure value reaches the preset range, and then stop filling the fluid medium.

[0033] Further, in the step S2, it further includes:

[0034] After the fluid medium is injected into the cavity through the liquid injection tube, a raised deformation area is formed on the outer surface of the first pressure bearing surface and / or the second pressure bearing surface, so that the impact pressure loading device bears the force applied by the force receiving module through the deformation area.

[0035] Based on the above technical solutions, the present invention has at least the following beneficial effects:

[0036] 1. The present invention provides an impact pressure loading device and a measurement method. By bearing pressure through the first pressure bearing surface and the second pressure bearing surface, it can accurately measure the pressure load on complex irregular surfaces (such as the structure of a reactor pit). Especially under the action of impact loads, it can obtain the actual load borne by the structure surface in real time and accurately, solving the problem that cannot be directly measured by traditional methods. The present invention is applicable to the measurement of different annuli such as the top, bottom, and middle parts of the reactor pit, meeting the pressure measurement requirements of complex structures at different positions, and providing reliable data support for comprehensively evaluating the structural response.

[0037] 2. The present invention provides an impact pressure loading device and a measurement method. The liquid storage core adopts a porous structure, which can maintain the liquid medium through capillary action, ensuring that the liquid medium does not leak during the liquid injection and pressure guiding processes, and at the same time adjusting the pressure inside the cavity. The sealing gasket can effectively restrain the deformation of the pressure bearing surface and keep the shape of the cavity unchanged, further improving the stability and reliability of the device.

[0038] 3. The present invention provides an impact pressure loading device and a measurement method. By optimizing the bearing mode and using buffer materials and other measures, the damage of dynamic load to the reactor pit structure is effectively reduced, the service life of the test device is extended, and the test cost is reduced. In addition, through the pressure sensor, the pressure change in the cavity can be monitored in real time, and the data is transmitted to the external monitoring device, which is convenient for adjusting the loading parameters in time to ensure the safety and reliability of the test process.

[0039] 4. The present invention provides an impact pressure loading device and a measurement method. Since the first pressure bearing surface and the second pressure bearing surface are made of elastic materials, the deformation area generated by the internal pressure can return to its original state after loading, ensuring that the device can still maintain good performance during multiple uses and will not affect the measurement accuracy due to deformation. The present invention can be reused, reducing the test cost and improving the economy and efficiency of the test. The device can adapt to the specific process of rigid collision. Through time-domain signal processing, high-quality dynamic pressure load measurement results can be obtained, which is applicable to complex application scenarios where it is difficult to measure pressure load by conventional technical means. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] The accompanying drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0041] Figure 1 The sectional view of an impact pressure loading device according to an embodiment is shown;

[0042] Figure 2 The layout schematic diagram of an impact pressure loading device according to an embodiment is shown;

[0043] Figure 3 The layout schematic diagram of an impact pressure loading device according to an embodiment is shown;

[0044] Figure 4 The three-dimensional structure layout diagram of an impact pressure loading device according to an embodiment is shown.

[0045] Among them, the above-mentioned drawings include the following reference numerals:

[0046] 1. First pressure bearing surface; 2. Second pressure bearing surface; 3. Sealing gasket; 4. Liquid injection pipe; 5. Liquid storage core; 6. Cavity; 7. Pressure guiding pipe; 8. Deformation area; 9. Pressure sensor;

[0047] 61. Fluid medium. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0048] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0049] The present invention will be further described in detail below in conjunction with specific embodiments, and these embodiments should not be construed as limiting the scope of protection required by the present invention. The term "comprising" indicates the presence of features when used, but does not exclude the presence or addition of one or more other features; the terms "lateral", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus cannot be construed as a limitation of the present invention; in addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0050] In the description, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations. In addition, in the description of the present invention, unless otherwise stated, the meaning of "a plurality" is two or more.

[0051] Embodiment

[0052] Embodiment 1

[0053] The present invention provides an impact pressure loading device, as Figure 1 shown in, comprising a first pressure bearing surface 1, a second pressure bearing surface 2, a liquid injection pipe 4 and a pressure guiding pipe 7. The first pressure bearing surface 1 and the second pressure bearing surface 2 are parallel to each other and arranged at intervals, forming two opposite end faces of the impact pressure loading device. A cavity 6 is formed between the first pressure bearing surface 1 and the second pressure bearing surface 2. Both the liquid injection pipe 4 and the pressure guiding pipe 7 are communicated with the cavity 6 and extend to the outside of the impact pressure loading device.

[0054] Furthermore, both the first pressure bearing surface 1 and the second pressure bearing surface 2 of the impact pressure loading device can be arranged in contact with the force application module or the force receiving module.

[0055] Furthermore, the first pressure-bearing surface 1 and the second pressure-bearing surface 2 and the sealing gasket 3 form the force-bearing structure of the impact pressure loading device, and a cavity 6 is formed between the first pressure-bearing surface 1 and the second pressure-bearing surface 2 and the sealing gasket 3. The impact pressure loading device can be of a cubic structure or an annular structure.

[0056] Specifically, as Figure 2 shown, the first pressure-bearing surface 1 and the second pressure-bearing surface 2 of the impact pressure loading device are arranged in a cubic structure on the surface of the embedded structure according to the embedded structure of the specimen.

[0057] Furthermore, the fluid working medium 61 is injected into the cavity 6 through the liquid injection pipe 4, so that a deformation zone 8 is formed on the surfaces of the first pressure-bearing surface 1 and the second pressure-bearing surface 2.

[0058] Furthermore, the preparation state means that the internal pressure of the impact pressure loading device is stable and reaches the predetermined pressure range of 0.15 Mpa - 0.25 Mpa, and at the same time, all preparation work is completed, and the impact pressure loading test can be carried out at any time.

[0059] Specifically, deionized water is selected as the fluid working medium 61, and hydraulic oil is injected into the cavity 6 through the liquid injection pipe 4, and the internal pressure of the cavity 6 is 0.15 Mpa.

[0060] Furthermore, the materials of the first pressure-bearing surface 1 and the second pressure-bearing surface 2 are low-carbon steels with a carbon content of 0.05% to 0.25%, which can be bent along the structure of the specimen or the force application module, so that the impact pressure loading device fits with one surface of the specimen or the force application module, and the deformation zone 8 on the first pressure-bearing surface 1 and the second pressure-bearing surface 2 corresponds to the position of the cavity 6.

[0061] Furthermore, the liquid storage core 5 inside the impact pressure loading device can be a sparse porous structure such as a sponge. When the fluid working medium 61 is injected through the liquid injection pipe 4, the liquid storage core 5 can absorb the fluid working medium 61. When the force application module transfers the force to the impact pressure loading device, the internal pressure of the cavity 6 is less than the initial pressure of 0.15 Mpa, and the liquid storage core 5 releases the internally absorbed fluid working medium 61 to maintain the stability of the internal pressure of the cavity 6.

[0062] To achieve the above object, the present invention also proposes an impact pressure measurement method, which uses the impact pressure loading device described above, and includes the following steps:

[0063] S1: Install the impact pressure loading device annularly on the periphery of the embedded structure of the specimen according to the embedded structure of the specimen, and install the force-bearing module in an embedded manner with the impact pressure loading device;

[0064] S2: Open the liquid injection pipe 4 to inject the fluid working medium 61;

[0065] S3: close the injection tube 4, open only the pressure-guiding tube 7, release the force-applying module, and measure pressure data.

[0066] Furthermore, if Figure 2 As shown in the figure, the force-applying module is a rhombus-shaped structure, and the first pressure-bearing surface 1 and the second pressure-bearing surface 2 are bent along the surfaces of the test piece and the force-applying module, and a liquid storage core 5 is arranged inside the cavity 6. The force-applying module can directly transmit force to the first pressure-bearing surface 1 or the second pressure-bearing surface 2, or a force-bearing module and an impact pressure loading device can be arranged between the first pressure-bearing surface 1 and the force-applying module or between the second pressure-bearing surface 2 and the force-applying module to transmit force. In this embodiment, the test is carried out by directly transmitting force between the first pressure-bearing surface 1 and the force-applying module.

[0067] Furthermore, the step S2 further includes:

[0068] A pressure sensor 9 is installed at the extending position of the pressure guide tube 7 .

[0069] Furthermore, the step S2 further includes:

[0070] During the filling process of the fluid working medium 61 , the pressure data is measured by the pressure sensor 9 until the pressure value reaches 0.15 MPa, and then the filling of the fluid working medium 61 is stopped.

[0071] Furthermore, the step S2 further includes:

[0072] When the fluid medium 61 is injected into the cavity 6 through the injection tube 4, a raised deformation zone 8 is formed on the outer surface of the first pressure-bearing surface 1 and / or the second pressure-bearing surface 2, so that the impact pressure loading device bears the force applied by the force application module through the deformation zone 8.

[0073] Example 2

[0074] The present invention provides an impact pressure loading device, such as Figure 1 As shown in the figure, it includes a first pressure-bearing surface 1, a second pressure-bearing surface 2, an injection tube 4 and a pressure-leading tube 7. The first pressure-bearing surface 1 and the second pressure-bearing surface 2 are parallel to each other and spaced apart, constituting two opposite end surfaces of the impact pressure loading device. The first pressure-bearing surface 1 and the second pressure-bearing surface 2 form a cavity 6. The injection tube 4 and the pressure-leading tube 7 are both connected to the cavity 6 and extend to the outside of the impact pressure loading device.

[0075] Furthermore, the first pressure bearing surface 1 and the second pressure bearing surface 2 of the impact pressure loading device can be arranged in close contact with the force applying module or the force receiving module.

[0076] Further, the first pressure-bearing surface 1 and the second pressure-bearing surface 2 and the sealing gasket 3 form a force-bearing structure of the impact pressure loading device, and a cavity 6 is formed between the first pressure-bearing surface 1 and the second pressure-bearing surface 2 and the sealing gasket 3. The impact pressure loading device can be of a cubic structure or an annular structure.

[0077] Specifically, as Figure 3 shown, the first pressure-bearing surface 1 and the second pressure-bearing surface 2 of the impact pressure loading device are arranged in an annular structure on the surface of the embedded structure according to the embedded structure of the specimen.

[0078] Further, a fluid working medium 61 is injected into the cavity 6 through the liquid injection pipe 4, so that a deformation zone 8 is formed on the surfaces of the first pressure-bearing surface 1 and the second pressure-bearing surface 2.

[0079] Preferably, hydraulic oil is selected as the fluid working medium 61, and the hydraulic oil is injected into the cavity 6 through the liquid injection pipe 4, and the pressure inside the cavity 6 is 0.2 Mpa.

[0080] Further, the materials of the first pressure-bearing surface 1 and the second pressure-bearing surface 2 are low-carbon steels with a carbon content of 0.05% to 0.25%, and can be bent along the structure of the specimen or the force-applying module, so that the first pressure-bearing surface 1 and the second pressure-bearing surface 2 of the impact pressure loading device are attached to one surface of the force-bearing module or the force-applying module, and the deformation zone 8 on the first pressure-bearing surface 1 and the second pressure-bearing surface 2 corresponds to the position of the cavity 6.

[0081] Further, the liquid storage core 5 inside the impact pressure loading device can be a sparse porous structure such as a sponge. When the fluid working medium 61 is injected through the liquid injection pipe 4, the liquid storage core 5 can absorb the fluid working medium 61. When the force-applying module transfers the force to the impact pressure loading device, the pressure inside the cavity 6 is less than the initial pressure of 0.2 Mpa, and the liquid storage core 5 releases the fluid working medium 61 absorbed inside to maintain the stability of the pressure inside the cavity 6.

[0082] To achieve the above object, the present invention also proposes an impact pressure measurement method, which uses the impact pressure loading device described above, and includes the following steps:

[0083] S1: Install the impact pressure loading device annularly on the periphery of the embedded structure of the specimen according to the embedded structure of the specimen, and install the force-bearing module in an embedded manner with the impact pressure loading device;

[0084] S2: Open the liquid injection pipe 4 to inject the fluid working medium 61;

[0085] S3: Close the liquid injection pipe 4, only open the pressure guiding pipe 7, release the force-applying module, and measure the pressure data.

[0086] Further, in combination with Figure 3 andFigure 4 As shown, three groups of the impact pressure loading devices are arranged along the surfaces of the test piece and the force application module with the first pressure bearing surface 1 and the second pressure bearing surface 2, and are respectively arranged at the bottom, middle and top of the inner cavity of the test piece. A liquid storage core 5 is arranged inside the cavity 6. In this embodiment, a force receiving module is arranged between the first pressure bearing surface 1 and the force application module, so that the impact pressure loading devices are fitted and arranged for force transmission.

[0087] Further, in the step S2, it further includes:

[0088] A pressure sensor 9 is installed at the extending position of the pressure guiding pipe 7.

[0089] Further, in the step S2, it further includes:

[0090] During the process of filling the fluid medium 61, the pressure data is measured by the pressure sensor 9 until the pressure value reaches 0.2 Mpa, and then the filling of the fluid medium 61 is stopped.

[0091] Further, in the step S2, it further includes:

[0092] After the fluid medium 61 is injected into the cavity 6 through the liquid injection pipe 4, a convex deformation area 8 is formed on the outer surface of the first pressure bearing surface 1 and / or the second pressure bearing surface 2, so that the impact pressure loading device bears the force applied by the force receiving module through the deformation area 8.

[0093] In summary, it can be seen from the above description that the above embodiments of the present invention achieve the following technical effects:

[0094] 1. The present invention provides an impact pressure loading device and a measurement method. By bearing pressure through the first pressure bearing surface and the second pressure bearing surface, it can accurately measure the pressure load on a complex special-shaped surface (such as a reactor pit structure); especially under the action of an impact load, it can obtain the actual load borne by the structure surface in real time and accurately, solving the problem that cannot be directly measured by traditional methods. The present invention is applicable to the measurement of different zones such as the top, bottom and middle parts of the reactor pit, meeting the pressure measurement requirements of complex structures at different positions, and providing reliable data support for comprehensively evaluating the structural response.

[0095] 2. The present invention provides an impact pressure loading device and a measurement method. The liquid storage core adopts a porous structure, which can keep the liquid medium by capillary action, ensuring that the liquid medium will not leak during the liquid injection and pressure guiding processes, and at the same time adjusting the pressure inside the cavity; the sealing gasket can effectively restrict the deformation of the pressure bearing surface and keep the shape of the cavity unchanged, further improving the stability and reliability of the device.

[0096] 3. The present invention provides an impact pressure loading device and a measurement method. By optimizing the bearing mode and adopting measures such as buffer materials, the damage of dynamic loads to the reactor pit structure is effectively reduced, the service life of the test device is extended, and the test cost is reduced. In addition, through the pressure sensor, the pressure change in the cavity can be monitored in real time, and the data is transmitted to the external monitoring device, facilitating the timely adjustment of the loading parameters to ensure the safety and reliability of the test process.

[0097] 4. The present invention provides an impact pressure loading device and a measurement method. Since the first pressure bearing surface and the second pressure bearing surface are made of elastic materials, the deformation area generated by the internal pressure can return to its original state after loading, ensuring that the device can still maintain good performance during multiple uses and will not affect the measurement accuracy due to deformation. The present invention can be reused, reducing the test cost and improving the economy and efficiency of the test. The device can adapt to the specific process of rigid collision. Through time-domain signal processing, high-quality dynamic pressure load measurement results can be obtained, which is applicable to complex application scenarios where it is difficult to measure pressure loads by conventional technical means.

[0098] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0099] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the element.

[0100] It should be noted that in the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

Claims

1. An impact pressure loading device, characterized in that: The device comprises a first pressure-bearing surface (1), a second pressure-bearing surface (2), a liquid injection tube (4) and a pressure-inducing tube (7); the first pressure-bearing surface (1) and the second pressure-bearing surface (2) are parallel to each other and arranged at an interval, forming two opposite end surfaces of the impact pressure loading device; a cavity (6) is formed between the first pressure-bearing surface (1) and the second pressure-bearing surface (2); the liquid injection tube (4) and the pressure-inducing tube (7) are both connected to the cavity (6) and extend to the outside of the impact pressure loading device.

2. The device according to claim 1, characterized in that: Including sealing gasket (3), The sealing gasket (3) is arranged between the first pressure bearing surface (1) and the second pressure bearing surface (2).

3. The device according to claim 2, characterized in that: The sealing gasket (3), the first pressure bearing surface (1) and the second pressure bearing surface (2) surround and form the cavity (6).

4. The device according to claim 1, characterized in that: comprising a fluid working medium (61), The fluid working medium (61) is injected into the cavity (6) through the injection pipe (4).

5. The device according to claim 4, characterized in that: The fluid working medium (61) is hydraulic oil, deionized water, a water-ethylene glycol mixture, silicone oil or compressed air.

6. The device according to claim 4, characterized in that: The fluid medium (61) in the cavity (6) is filled through the injection pipe (4) to a ready state, at which time the pressure of the fluid medium (61) in the cavity (6) is 0.15Mpa-0.25Mpa.

7. The device according to claim 1, characterized in that: It comprises a liquid storage core (5), The liquid storage core (5) is arranged between the first pressure bearing surface (1) and the second pressure bearing surface (2).

8. The device according to claim 7, characterized in that: The liquid storage core (5) is made of sponge.

9. The device according to claim 1, characterized in that: comprising a pressure sensor (9), The pressure sensor (9) is arranged outside the impact pressure loading device, at an extended position of the pressure-guiding pipe (7).

10. The device according to claim 1, characterized in that: include, The first pressure bearing surface (1) and the second pressure bearing surface (2) are made of low-carbon steel, so that the first pressure bearing surface (1) and the second pressure bearing surface (2) are deformable.

11. A measurement method using the impact pressure loading device as claimed in claims 1 to 10, characterized in that: include: S1: according to the embedded structure of the specimen, the impact pressure loading device is annularly installed on the periphery of the embedded structure of the specimen, and the force-bearing module is embedded and installed with the impact pressure loading device; S2: opening the liquid injection pipe (4) and injecting the fluid medium (61); S3: closing the liquid injection tube (4), opening the pressure-guiding tube (7), releasing the force-applying module, and measuring pressure data.

12. The method according to claim 11, characterized in that: The step S1 further includes: The impact pressure loading device is embedded in the force-bearing module, and the first pressure-bearing surface (1) or the second pressure-bearing surface (2) is arranged to fit with one surface of the force-bearing module.

13. The method according to claim 11, characterized in that: The step S2 further includes: A pressure sensor (9) is installed at the extended position of the pressure-guiding pipe (7).

14. The method according to claim 13, characterized in that: The step S2 further includes: During the process of filling the fluid working medium (61), pressure data is measured by the pressure sensor (9) until the pressure value reaches a preset range, and then filling of the fluid working medium (61) is stopped.

15. The method according to claim 11, characterized in that: The step S2 further includes: When the fluid working medium (61) is injected into the cavity (6) through the injection pipe (4), a raised deformation zone (8) is formed on the outer surface of the first pressure-bearing surface (1) and / or the second pressure-bearing surface (2), so that the impact pressure loading device bears the force applied by the force-bearing module through the deformation zone (8).

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