Deep sea expansion material performance test system and method

Abstract

The invention provides a deep sea expansion material performance test system and method, and relates to the technical field of test equipment, the deep sea expansion material performance test system comprises a kettle body, a simulation surface layer sleeve, an expansion material piece and a moving mechanism, the kettle body comprises a hollow chamber, and the hollow chamber is used for filling test liquid and / or a soil layer; one end of the simulation surface sleeve is movably inserted into the kettle body, the other end of the simulation surface sleeve penetrates out of the kettle body, and the simulation surface sleeve and the kettle body are arranged in a sealing manner; the expansion material piece is arranged on the simulation surface sleeve and is arranged in the kettle body; and the moving mechanism is connected with the other end of the simulated surface sleeve and can be used for driving the simulated surface sleeve to move. According to the device, extreme conditions such as low temperature and high pressure can be simulated in the kettle body, so that performance parameters of an expansion material piece in different deep sea environments can be more accurately measured, and researchers can better know the performance of different expansion materials.

Description

Technical Field

[0001] The present invention relates to the technical field of testing equipment, and in particular to a deep-sea expansion material performance testing system and method. Background Art

[0002] Deepwater oil and gas development has become an important strategic direction in the energy field. However, environmental factors such as extreme low temperature and high pressure in the deep sea have brought great technical challenges to oil and gas drilling and development. In deep-sea environments, the operating stability of drilling equipment, equipment durability, and the reliability of material performance are all put to great test. In particular, the surface casing, as a key component of the supporting structure and control of oil and gas flow in deep-sea drilling equipment, the performance of the surface casing will directly affect the success and safety of equipment operations. In actual use, due to the long-term coupling of the surface casing with the drilling platform, pipe string and other devices, the force on the surface casing is very complex, and the performance requirements for the surface casing are also high. Generally, problems such as instability and sinking of the surface casing will greatly increase the risk of on-site operations, thereby increasing operating costs and even leading to the failure of the entire drilling operation.

[0003] In addition, because the shallow soil in deep water is soft and there may be shallow geological disasters such as gas and water, when using conventional surface casing for operation, the surface casing is prone to long mud penetration or inadequate injection. In order to solve the above problems, a new type of deep-sea expansive surface casing has been developed in the prior art. The deep-sea expansive surface casing has high load-bearing performance, and through the characteristics of the expansive material, the contact area between the surface casing and the seabed soil layer is increased, thereby improving the lateral friction, bending resistance and bearing capacity of the underwater wellhead of the surface casing, while also bringing high strength and good bearing capacity. Since deep-sea expansive materials are the key components of expansive surface guides to improve bearing capacity and performance, how to better explore the research and selection mechanism, expansion rate, delay and adhesion properties of expansive materials has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] In order to overcome the above-mentioned defects of the prior art, the technical problem to be solved by the embodiments of the present invention is to provide a deep-sea expandable material performance testing system and method for better testing and analyzing the expandable surface casing.

[0005] The above-mentioned object of the present invention can be achieved by adopting the following technical scheme. The present invention provides a deep-sea expansion material performance testing system, comprising:

[0006] A kettle body, the kettle body comprising a hollow chamber, the hollow chamber being used to be filled with a test liquid and / or a soil layer;

[0007] A simulated surface sleeve, one end of which is movably inserted into the kettle body, and the other end of which is inserted through the kettle body, and the simulated surface sleeve is sealed with the kettle body;

[0008] An expansion material piece, the expansion material piece is arranged on the simulated surface casing and placed in the kettle body;

[0009] A moving mechanism is connected to the other end of the simulated surface casing, and the moving mechanism can be used to drive the simulated surface casing to move.

[0010] In a preferred embodiment of the present invention, it also includes a pressure control mechanism, which includes a pressure control pipeline and a pressure control component arranged on the pressure control pipeline, the pressure control pipeline is connected to the kettle body, and the pressure control mechanism can be used to adjust the pressure in the kettle body.

[0011] In a preferred embodiment of the present invention, the pressure control assembly includes a gas tank, a pressure boosting device and a pressure regulating device, and the gas tank, the pressure boosting device and the pressure regulating device are connected in series through the pressure control pipeline.

[0012] In a preferred embodiment of the present invention, it also includes a temperature control mechanism, which includes a temperature control pipeline and a temperature control component arranged on the temperature control pipeline, the temperature control pipeline is heat exchangeably connected to the kettle body, and the temperature control mechanism can be used to adjust the temperature in the kettle body.

[0013] In a preferred embodiment of the present invention, the temperature control component includes a water bath, a refrigeration element and a temperature control device, the water bath, the refrigeration element and the temperature control device are connected in series through the temperature control pipeline, the refrigeration element and the temperature control device can be used to adjust the temperature of the water bath, and at least part of the kettle body is placed in the water bath.

[0014] In a preferred embodiment of the present invention, a data acquisition module is further included, the data acquisition module includes a data acquisition system and a data acquisition unit electrically connected to the data acquisition system, the data acquisition system can be used to upload the collected data to a computer, and the data acquisition unit includes a combination of one or more of a displacement sensor, a tension sensor, a pressure sensor, a liquid level sensor and a temperature sensor;

[0015] Among them, the displacement sensor is used to collect the displacement data of the simulated surface casing, the tension sensor is used to collect the force data of the simulated surface casing, the pressure sensor is used to collect the pressure data in the kettle body, the liquid level sensor is used to collect the liquid level data in the kettle body, and the temperature sensor is used to collect the temperature data in the kettle body.

[0016] In a preferred embodiment of the present invention, it further comprises an adhesion testing mechanism, wherein the adhesion testing mechanism comprises a limiting member arranged in the kettle body, and the limiting member is provided with a testing channel for the expansion material to enter.

[0017] In a preferred embodiment of the present invention, the moving mechanism includes a fixing frame and a driving mechanism disposed on the fixing frame, the driving mechanism is connected to the other end of the simulated surface casing, and the driving mechanism can be used to drive the simulated surface casing to move.

[0018] In a preferred embodiment of the present invention, the expansion material piece is formed by expanding rubber.

[0019] The present invention also provides a method for testing the performance of deep-sea expansion materials, comprising the following steps:

[0020] Install and inspect deep sea expansion material performance testing system;

[0021] A simulated deep-sea environment is set in the kettle, and the preset water level in the kettle is recorded;

[0022] Fixing the expansion material piece at a preset position of the simulated surface casing, and recording the initial volume and weight of the expansion material piece;

[0023] Using a temperature control mechanism to adjust the temperature in the kettle to a preset temperature and / or using a pressure control mechanism to adjust the pressure in the kettle to a preset pressure;

[0024] When the environmental parameters in the kettle reach the preset values, the data acquisition module is started to collect data;

[0025] Controlling the simulated surface casing to perform a test operation, and recording data parameters of the simulated surface casing during the test operation; wherein the data parameters include the tension on the simulated surface casing and / or the water level in the kettle;

[0026] The performance data of the expanded material piece is calculated based on the data parameters.

[0027] In a preferred embodiment of the present invention, controlling the simulated surface casing to perform a test operation and recording data parameters of the simulated surface casing during the test operation specifically includes the following steps:

[0028] Control the simulated surface casing to move to a first preset position, and record the tension F1 on the simulated surface casing and the water level L1 in the kettle body; wherein, at the first preset position, the simulated surface casing is located above the liquid surface in the kettle body;

[0029] Control the simulated surface casing to move from the first preset position to the second preset position, so that the expansion material piece is completely immersed under the liquid surface in the kettle body, and record the tension F on the simulated surface casing 1’ , and the water level L in the kettle 1’ ;

[0030] When the first test time point is reached, record the tensile force F on the simulated surface casing at this time. 2’ , and the water level L in the kettle 2’ ;

[0031] Move the simulated surface casing upward to a first preset position, and record the tension F2 on the simulated surface casing and the water level L2 in the kettle body at this time;

[0032] Repeat the above test operation until the i-th test time point, and record the tensile force F on the simulated surface casing. i+1’ , tension F i+1 , the water level L in the kettle i+1’ , L i+1 .

[0033] In a preferred embodiment of the present invention, the performance data of the expansion material piece at least includes the water absorption of the expansion material, the mass loss of the expansion material itself, the mass rate of the expansion material, the water absorption rate of the expansion material and the expansion rate of the expansion material;

[0034] The specific calculation formula is:

[0035] At the test time point i, the water absorption of the expansion material is: V 吸 =(L i+1 -L1)πr 2 ;

[0036] At the test time point i, the expanded material itself loses mass:

[0037] At the test time point i,

[0038] At the test time point i,

[0039] At the test time point i,

[0040] Where: r represents the radius of the hollow chamber in the reactor body, ρ 测 Indicates the density of the test liquid in the kettle.

[0041] In a preferred embodiment of the present invention, the above test operation is repeated until the i-th test time point, and the tension F on the simulated surface casing is recorded. i+1’ , tension F i+1, the water level L in the kettle i+1’ , L i+1 After that, the following steps are also included:

[0042] The simulated surface casing is controlled to move downward continuously, so that the simulated surface casing passes through the test channel on the adhesion test mechanism, so that the expansion material pieces are peeled off from the simulated surface casing, and the displacement and stress of the simulated surface casing are recorded during this process, and the maximum pressure F of the simulated surface casing is recorded. max .

[0043] In a preferred embodiment of the present invention, the performance data of the expansion material piece also includes the expansion material bonding strength, and the specific calculation formula is:

[0044] At the test time point i,

[0045] Where: S represents the bonding area of ​​the expansion material.

[0046] The technical solution of the present invention has the following significant beneficial effects:

[0047] When the deep-sea expansion material performance test system of the present invention is used, seawater and / or soil layers are set in the kettle body, so as to simulate the deep-sea environment. In addition, by adjusting the temperature and pressure parameters in the kettle body, extreme conditions such as low temperature and high pressure can be simulated in the kettle body, with better simulation accuracy, which helps to more accurately measure the performance parameters of expansion materials in different deep-sea environments, and facilitates researchers to better understand the performance of different expansion materials, so as to screen out more economical and environmentally friendly, high-pressure-resistant, and high-expansion-rate expansion materials, and further helps to provide experimental support for subsequent improvements and research on expansion materials, so as to better improve the durability, stability, reliability and other performance of expansion materials.

[0048] Furthermore, the required experimental data can be obtained through the data acquisition module, so that the volume and weight of the expansion material at different stages can be calculated without releasing pressure to open the kettle, which is convenient for accurately testing the expansion rate and delay of the expansion material. In addition, by using the mobile mechanism in conjunction with the adhesion test mechanism, the adhesion and peeling behavior of the expansion material in the deep sea environment can be simulated, and the adhesion data of the expansion material in different deep sea environments can be calculated. Based on the adhesion data of the expansion material, it can better serve as a theoretical support for the subsequent design and selection of deep-sea expansion surface casings, thereby ensuring that the deep-sea expansion surface casing can work normally and stably in the deep-sea environment, significantly improving the safety and reliability of the deep-sea expansion surface casing. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0050] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0051] Figure 1 This is a schematic structural diagram of an embodiment of the deep-sea expansion material performance testing system of the present invention;

[0052] Figure 2 It is a side cross-sectional structural schematic diagram of an embodiment of the kettle body of the present invention;

[0053] Figure 3 It is a structural schematic diagram of an embodiment of the pressure control mechanism of the present invention;

[0054] Figure 4 It is a structural schematic diagram of an embodiment of the temperature control mechanism of the present invention;

[0055] Figure 5 The figure is a schematic diagram of the structure of an embodiment of the data acquisition module of the present invention.

[0056] Reference numerals of the above drawings:

[0057] 1. Test mechanism; 101. Frame upper beam; 102. Frame side column; 1021. Guide rail; 103. Guide rail beam; 104. Servo motor; 105. Kettle body; 106. Test liquid; 107. Sealing cover; 108. Sealing bolt; 109. Sealing rubber ring; 110. Simulated surface casing; 111. Tension sensor; 112. Expansion material; 113. Adhesion test mechanism; 1131. Limit block; 1132. Connecting steel; 114. Displacement sensor; 115. Pressure sensor; 116. Liquid level sensor; 117. Temperature sensor;

[0058] 2. pressure control mechanism; 201. gas tank; 202. pressure control valve; 203. pressure control pipeline; 204. pressure boosting device; 205. pressure regulating device;

[0059] 3. Temperature control mechanism; 301. Refrigeration element; 302. Temperature control pipeline; 303. Temperature control equipment; 304. Water bath;

[0060] 4. Data acquisition module; 401. Data transmission line; 402. Data acquisition device; 403. Computer. DETAILED DESCRIPTION

[0061] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0062] Implementation Method 1

[0063] Please refer to Figure 1 and Figure 2 As shown, an embodiment of the present invention provides a deep-sea swelling material performance testing system, which includes a kettle 105, a simulated surface casing 110, an swelling material piece 112 and a moving mechanism, the kettle 105 includes a hollow chamber, the hollow chamber is used to fill the test liquid 106 and / or the soil layer; one end of the simulated surface casing 110 is movably inserted in the kettle 105, and the other end of the simulated surface casing 110 is passed through the kettle 105, and the simulated surface casing 110 and the kettle 105 are sealed; the swelling material piece 112 is arranged on the simulated surface casing 110 and placed in the kettle 105; the moving mechanism is connected to the other end of the simulated surface casing 110, and the moving mechanism can be used to drive the simulated surface casing 110 to move.

[0064] The designer can adjust the specific composition of the test liquid 106 according to the use requirements, and no specific limitation is made here. Preferably, the test liquid 106 is seawater.

[0065] In general, when the deep-sea expansion material performance test system is used, the deep-sea environment can be simulated by setting seawater and / or soil layers in the kettle 105. In addition, by adjusting the temperature and pressure parameters in the kettle 105, extreme conditions such as low temperature and high pressure can be simulated in the kettle 105, with better simulation accuracy, which helps to more accurately measure the performance parameters of the expansion material piece 112 in different deep-sea environments, and facilitates researchers to better understand the performance of different expansion materials, so as to screen out more economical and environmentally friendly, high-pressure-resistant, and high-expansion-rate expansion materials, and further provide experimental data support for subsequent improvements and research on the expansion material piece 112, so as to better improve the durability, stability, reliability and other performance of the expansion material.

[0066] Furthermore, the required experimental data can be obtained through the data acquisition module 4, so that the volume and weight of the expansion material piece 112 at different stages can be calculated without releasing the pressure to open the kettle body 105, thereby facilitating accurate testing of the expansion rate and delay of the expansion material piece 112.

[0067] Furthermore, by using the mobile mechanism in conjunction with the adhesion test mechanism 113, the adhesion and peeling behavior of the expansion material piece 112 in the deep sea environment can be simulated, and then the adhesion data of the expansion material piece 112 in different deep sea environments can be calculated. Based on the adhesion data of the expansion material piece 112, theoretical guidance can be better provided for the subsequent design and selection of deep sea expansion surface casings, thereby ensuring that the deep sea expansion surface casing can work normally and stably in the deep sea environment, significantly improving the safety and reliability of the deep sea expansion surface casing. Among them, the kettle body 105, the simulated surface casing 110, the expansion material piece 112 and the mobile mechanism together constitute the test mechanism 1.

[0068] Furthermore, designers can adjust the specific composition of seawater and / or soil layers to simulate different water quality adjustments according to usage requirements, and no specific restrictions are made herein.

[0069] In the embodiment of the present invention, a sealing cover 107 is provided on the kettle body 105. In addition, in order to improve the sealing stability between the kettle body 105 and the sealing cover 107, a sealing member is provided between the kettle body 105 and the sealing cover 107.

[0070] The designer can adjust the specific structure of the seal according to the use requirements, and no specific limitation is made here. Preferably, the seal is a sealing rubber ring 109. The sealing rubber ring 109 should have high corrosion resistance and high elasticity.

[0071] Furthermore, the kettle body 105 and the sealing cover 107 can be tightly connected via the sealing bolts 108, thereby eliminating possible leakage points.

[0072] In an embodiment of the present invention, Figure 2 In the illustrated embodiment, the moving mechanism includes a fixing frame and a driving mechanism disposed on the fixing frame. The driving mechanism is connected to the other end of the simulated surface casing 110 and can be used to drive the simulated surface casing 110 to move.

[0073] In a specific embodiment, the fixing frame includes at least one frame upper crossbeam 101 and at least one frame side column 102. Preferably, at least two frame side columns 102 are provided, and the frame upper crossbeam 101 is connected with a plurality of frame side columns 102 to form a rectangular frame structure.

[0074] In addition, the driving mechanism includes a guide rail 1021 disposed on the frame side column 102, and a guide rail beam 103 slidably disposed on the guide rail 1021. The two ends of the guide rail beam 103 are respectively connected to the guide rails 1021 on both sides, so that the guide rail beam 103 has better stability during the lifting process.

[0075] In addition, a frame support and a drive motor are provided at the lower part of the frame side column 102, and the drive motor is drivably connected to the guide rail beam 103, so that the drive motor can drive the guide rail beam 103 to perform lifting motion. Preferably, the drive motor is a servo motor 104, which has better motion control accuracy.

[0076] Furthermore, the guide rail beam 103 is disposed above the simulated surface casing 110 and connected to the other end of the simulated surface casing 110 , so that the guide rail beam 103 can perform lifting and lowering movements synchronously with the simulated surface casing 110 .

[0077] Of course, in other feasible embodiments, designers can design specific structures of the fixing frame and the driving mechanism according to usage requirements, and no specific restrictions are made here.

[0078] The designer may adjust the specific shape of the expansion material piece 112 according to the experimental requirements to meet the requirements of different pipes or structures, and no specific limitation is made here. For example, the expansion material piece 112 may be set to a ring shape, a block shape, or other shapes.

[0079] In a feasible embodiment of the present invention, the expansion material piece 112 is formed by expansion rubber. Preferably, the expansion rubber is water-swellable rubber (WSR), which has unique water absorption and expansion properties and strong physical and mechanical properties.

[0080] By fixing the expansion material piece 112 at a preset position at one end of the simulated surface casing 110, the characteristics of the expandable surface casing are simulated. The designer can adjust the fixing position of the expansion material piece 112 according to the experimental needs, and no specific restrictions are made here. For example, the expansion material piece 112 can be glued and fixed at one end of the simulated surface casing 110, or the expansion material piece 112 can also be fixed at one end of the simulated surface casing 110 through a connecting structure.

[0081] Of course, in other feasible embodiments, designers may use other types of expansion materials to replace the expansion rubber, and no specific limitation is made herein.

[0082] In an embodiment of the present invention, Figure 3The illustrated embodiment further includes a pressure control mechanism 2 , which includes a pressure control pipeline 203 and a pressure control component disposed on the pressure control pipeline 203 . The pressure control pipeline 203 is connected to the kettle body 105 , and the pressure control mechanism 2 can be used to adjust the pressure in the kettle body 105 .

[0083] By connecting the pressure control mechanism 2 with the kettle 105, the pressure in the kettle 105 can be adjusted by the pressure control mechanism 2, thereby better simulating the high pressure environment of the deep sea. The designer can adjust the pressure in the kettle 105 according to the experimental needs, and no specific numerical limit is made here.

[0084] In a specific embodiment, the pressure control assembly includes a gas tank 201 , a pressure boosting device 204 and a pressure regulating device 205 , and the gas tank 201 , the pressure boosting device 204 and the pressure regulating device 205 are connected in series via a pressure control pipeline 203 .

[0085] In addition, a pressure control valve 202 may be provided at the outlet of the gas tank 201, and a pressure control valve 202 may also be provided at the outlet 7 of the pressure regulating device 205, thereby improving control convenience through the pressure control valve.

[0086] Specifically, the gas tank 201 is connected to the air inlet of the booster device 204 through the pressure control pipeline 203, and the gas tank 201 can be used to provide a gas source. In addition, the air outlet of the booster device 204 is also connected to the pressure regulating device 205 through the pressure control pipeline 203, and the pressure regulating device 205 is used to ensure that the gas pressure inside the kettle body 105 can be stable within a set range. The pressure regulating device 205 is connected to the kettle body 105 through the pressure control pipeline 203, so that the pressure can be accurately adjusted and controlled by the pressure regulating device 205.

[0087] The designer can determine the specific models of the boosting device 204 and the pressure regulating device 205 according to the use requirements, and no specific limitation is made here. Preferably, the boosting device 204 can be set as a boosting pump, and the pressure regulating device 205 can be set as a pressure regulator.

[0088] Of course, in other feasible embodiments, designers can adjust the specific structure of the pressure control mechanism 2 according to usage requirements, and no specific limitation is made here.

[0089] In an embodiment of the present invention, Figure 4 The illustrated embodiment further includes a temperature control mechanism 3 , which includes a temperature control pipeline 302 and a temperature control component disposed on the temperature control pipeline 302 . The temperature control pipeline 302 is heat exchangeably connected to the kettle body 105 , and the temperature control mechanism 3 can be used to adjust the temperature inside the kettle body 105 .

[0090] By connecting the temperature control mechanism 3 to the kettle 105 in a heat exchangeable manner, the temperature control mechanism 3 can be used to adjust the ambient temperature in the kettle 105, thereby better simulating the low temperature environment of the deep sea. The designer can adjust the temperature in the kettle 105 according to the experimental needs, and no specific numerical value is limited here.

[0091] In a specific embodiment, the temperature control component includes a water bath 304, a refrigeration element 301 and a temperature control device 303. The water bath 304, the refrigeration element 301 and the temperature control device 303 are connected in series through a temperature control pipeline 302. The refrigeration element 301 and the temperature control device 303 can be used to adjust the temperature of the water bath 304. At least part of the kettle body 105 is placed in the water bath 304.

[0092] Specifically, the refrigeration element 301 is installed on the temperature control pipeline 302, and the liquid in the temperature control pipeline 302 can be cooled to a set temperature through the refrigeration element 301. The temperature control device 303 is connected to the temperature control pipeline 302, and the temperature of the liquid in the temperature control pipeline 302 can be accurately controlled through the temperature control device 303. In addition, the temperature control pipeline 302 is connected to the side wall of the water bath 304, so that the liquid in the temperature control pipeline 302 can enter the water bath 304 to cool the water bath 304 to a set temperature. When the kettle 105 is placed in the water bath 304, the water bath 304 can exchange heat with the kettle 105 to reduce the temperature in the kettle 105, thereby better simulating the low temperature environment of the deep sea.

[0093] Designers can adjust the specific models of the refrigeration element 301 and the temperature control device 303 according to the use requirements, and no specific limitation is made here. Preferably, the refrigeration element 301 can be set as a refrigeration device.

[0094] Of course, in other feasible embodiments, the cooling element 301 can be replaced by a heating element, so that the heating element is used for heating to simulate the high temperature environment of the deep sea, and no specific limitation is made here.

[0095] In an embodiment of the present invention, Figure 5 The embodiment shown also includes a data acquisition module 4, which includes a data acquisition system and a data acquisition unit electrically connected to the data acquisition system. The data acquisition system can be used to upload the collected data to the computer 403. The data acquisition unit includes a combination of one or more of a displacement sensor 114, a tension sensor 111, a pressure sensor 115, a liquid level sensor 116 and a temperature sensor 117.

[0096] Preferably, the data acquisition unit includes a displacement sensor 114, a tension sensor 111, a pressure sensor 115, a liquid level sensor 116 and a temperature sensor 117. The displacement sensor 114 is used to collect displacement data of the simulated surface casing 110, the tension sensor 111 is used to collect force data of the simulated surface casing 110, the pressure sensor 115 is used to collect pressure data in the kettle 105, the liquid level sensor 116 is used to collect liquid level data in the kettle 105, and the temperature sensor 117 is used to collect temperature data in the kettle 105.

[0097] Specifically, the displacement sensor 114 is a draw-wire displacement sensor, which is disposed on the upper crossbeam 101 of the fixed frame and connected to the guide rail crossbeam 103 via a draw wire, so that the displacement data of the simulated surface casing 110 can be collected by using the draw-wire displacement sensor.

[0098] The tension sensor 111 is disposed at the connection between the simulated surface casing 110 and the guide rail crossbeam 103 . The tension sensor 111 can collect and transmit the stress condition of the simulated surface casing 110 during the experiment.

[0099] The pressure sensor 115 is installed on the sealing cover 107 of the kettle body 105 and connected to the hollow inner cavity of the kettle body 105 . The pressure change in the kettle body 105 can be checked through the pressure sensor 115 .

[0100] The liquid level sensor 116 is an ultrasonic liquid level meter, which is installed on the top of the hollow inner cavity of the kettle body 105. The ultrasonic liquid level meter can collect and transmit water level data during the experiment.

[0101] The temperature sensor 117 is installed on the side wall of the kettle body 105 and communicates with the hollow inner cavity of the kettle body 105 . The temperature of the liquid in the kettle body 105 can be measured by the temperature sensor 117 .

[0102] Of course, in other feasible implementations, designers can adjust the model and installation position of each sensor according to usage requirements, and no specific restrictions are made here.

[0103] Furthermore, all parts communicating with the hollow chamber of the kettle 105, including the pressure control pipeline 203, the pressure sensor 115, the temperature sensor 117 and the liquid level sensor 116, are provided with corresponding sealing structures. Designers can select the most suitable sealing method according to different test requirements, such as sealing rings or packing seals, to ensure that the test device always maintains a completely closed state in an extremely low temperature and high pressure environment.

[0104] This strict sealing system design not only effectively prevents the risk of test liquid leakage or external contamination, but also ensures the continuous stability of the test environment, providing strong support for the accuracy and reliability of experimental data.

[0105] In the embodiment of the present invention, an adhesion testing mechanism 113 is further included. The adhesion testing mechanism 113 includes a limiter disposed in the kettle body 105. The limiter is provided with a test channel for the expansion material to enter.

[0106] Specifically, the limiter is installed in the kettle body 105 through a fixing frame, thereby improving the installation stability of the limiter. The limiter includes a limit block 1131, and a through hole is provided on the limit block 1131 to form a test channel. The mounting frame includes a connecting steel 1132, and the limit block 1131 is fixed in the kettle body 105 through the connecting steel 1132. Of course, the designer can adjust the specific structure of the limiter and the fixing frame according to the use requirements, and no specific limitation is made here.

[0107] Furthermore, the stopper is fixed at the lower middle portion of the kettle body 105 and is placed at the center of the kettle body 105 , so that the test channel and the simulated surface casing 110 are roughly concentrically arranged.

[0108] The designer can adjust the size of the test channel according to the experimental requirements, and no specific limitation is imposed here. Preferably, the inner diameter of the test channel completely matches the outer diameter of the simulated surface casing 110 .

[0109] Implementation Method 2

[0110] An embodiment of the present invention provides a method for testing the performance of a deep-sea expansion material, comprising the following steps:

[0111] Step 1000: Install and inspect the deep-sea expansion material performance test system. After the deep-sea expansion material performance test system is installed, the deep-sea expansion material performance test system is inspected to help ensure the sealing and reliability of the deep-sea expansion material performance test system during the experiment.

[0112] Step 2000 : Setting a simulated deep sea environment in the kettle 105 , and recording a preset water level in the kettle 105 .

[0113] By injecting seawater into the kettle 105, a deep sea environment can be simulated in the kettle 105. The designer can determine the amount of seawater injected according to experimental requirements so that the kettle 105 has a preset water level, which is not specifically limited here.

[0114] Step 3000 : fix the expansion material piece 112 at a preset position of the simulated surface casing 110 , and record the initial volume and weight of the expansion material piece 112 .

[0115] By recording the initial volume and weight of the expanded material piece 112 , data support is provided for subsequent performance calculation of the expanded material piece 112 .

[0116] Step 4000: Using the temperature control mechanism 3 to adjust the temperature in the kettle body 105 to a preset temperature and / or using the pressure control mechanism 2 to adjust the pressure in the kettle body 105 to a preset pressure.

[0117] Preferably, the temperature in the kettle 105 is adjusted to a preset temperature, and the pressure in the kettle 105 is adjusted to a preset pressure, so as to simulate the low temperature and high pressure environment of the deep sea, which helps to improve the experimental accuracy of the expansion material piece 112.

[0118] Step 5000: When the environmental parameters in the kettle body 105 reach the preset value, the data acquisition module is started to collect data.

[0119] The data acquisition module includes one or more combinations of a displacement sensor 114 , a tension sensor 111 , a pressure sensor 115 , a liquid level sensor 116 and a temperature sensor 117 .

[0120] Preferably, the data acquisition module includes a displacement sensor 114 , a tension sensor 111 , a pressure sensor 115 , a liquid level sensor 116 and a temperature sensor 117 .

[0121] Step 6000 : Control the simulated surface casing 110 to perform a test operation, and record data parameters of the simulated surface casing 110 during the test operation; wherein the data parameters include the tension on the simulated surface casing 110 and / or the water level in the kettle body 105 .

[0122] Designers can adjust the movement mode of the simulated surface casing 110 according to experimental needs, so as to better test the performance data of the expansion material piece 112 in different movement scenarios, and no specific restrictions are made here.

[0123] Step 7000: Calculate the performance data of the expansion material piece 112 based on the data parameters.

[0124] In an embodiment of the present invention, controlling the simulated surface casing 110 to perform a test operation and recording data parameters of the simulated surface casing 110 during the test operation specifically includes the following steps:

[0125] Step 6100: Control the simulated surface casing 110 to move to a first preset position, and record the tension F1 on the simulated surface casing 110 and the water level L1 in the kettle 105; wherein, at the first preset position, the simulated surface casing 110 is located above the liquid surface in the kettle 105;

[0126] Step 6200: Control the simulated surface casing 110 to move from the first preset position to the second preset position, so that the expansion material 112 is completely immersed under the liquid surface in the kettle 105, and record the tension F on the simulated surface casing 110 1’ , and the water level L in the kettle 105 1’ ;

[0127] Step 6300: When the first test time point is reached, record the tensile force F on the simulated surface casing 110 at this time. 2’ , and the water level L2' in the kettle body 105;

[0128] Step 6400: Move the simulated surface casing 110 upward to a first preset position, and record the tension F2 on the simulated surface casing 110 and the water level L2 in the kettle body 105 at this time;

[0129] Step 6500: Repeat the above test operation until the i-th test time point, and record the tensile force F on the simulated surface casing 110 i+1’ , tension F i+1 , the water level L in the kettle body 105 i+1’ , L i+1 .

[0130] In an embodiment of the present invention, the performance data of the expansion material piece 112 at least includes the amount of water absorbed by the expansion material, the mass loss of the expansion material itself, the mass rate of the expansion material, the water absorption rate of the expansion material and the expansion rate of the expansion material;

[0131] The specific calculation formula is:

[0132] At the test time point i, the water absorption of the expansion material is: V 吸 =(L i+1 -L1)πr 2 ;

[0133] At the test time point i, the expanded material itself loses mass:

[0134] At the test time point i,

[0135] At the test time point i,

[0136] At the test time point i,

[0137] Where: r represents the radius of the hollow chamber in the reactor body 105, ρ 测 Indicates the density of the test liquid 106 in the kettle 105.

[0138] In an embodiment of the present invention, the above test operation is repeated until the i-th test time point, and the tension F on the simulated surface casing 110 is recorded. i+1’ , tension F i+1 , the water level L in the kettle body 105 i+1’ , L i+1 After that, the following steps are also included:

[0139] Step 6600: Control the simulated surface casing 110 to continue to move downward, so that the simulated surface casing 110 passes through the test channel on the adhesion testing mechanism 113, so that the expansion material pieces 112 are all peeled off from the simulated surface casing 110, and record the displacement and force of the simulated surface casing 110 during this process, and record the maximum pressure F of the simulated surface casing 110. max .

[0140] In the embodiment of the present invention, the performance data of the expansion material piece also includes the bonding strength of the expansion material, and the specific calculation formula is:

[0141] At the test time point i,

[0142] Where: S represents the bonding area of ​​the expansion material.

[0143] All articles and references disclosed, including patent applications and publications, are incorporated herein by reference for various purposes. The term "consisting essentially of ... " describing a combination should include determined elements, ingredients, parts or steps and other elements, ingredients, parts or steps that do not substantially affect the basic novel features of the combination. The use of the terms "comprising" or "including" to describe the combination of elements, ingredients, parts or steps here also contemplates the implementation method consisting essentially of these elements, ingredients, parts or steps. Here, by using the term "may", it is intended to illustrate that any attribute described that "may" includes is optional. Multiple elements, ingredients, parts or steps can be provided by a single integrated element, ingredient, part or step. Alternatively, a single integrated element, ingredient, part or step can be divided into separate multiple elements, ingredients, parts or steps. The disclosure "one" or "one" used to describe an element, ingredient, part or step is not said to exclude other elements, ingredients, parts or steps.

[0144] Each embodiment in this specification is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the embodiments can be referred to each other. The above embodiments are only for illustrating the technical concept and features of the present invention. The purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A deep sea expansion material performance testing system, characterized in that: include: A kettle body, the kettle body comprising a hollow chamber, the hollow chamber being used to be filled with a test liquid and / or a soil layer; A simulated surface sleeve, one end of which is movably inserted into the kettle body, and the other end of which is inserted through the kettle body, and the simulated surface sleeve is sealed with the kettle body; An expansion material piece, the expansion material piece is arranged on the simulated surface casing and placed in the kettle body; A moving mechanism is connected to the other end of the simulated surface casing, and the moving mechanism can be used to drive the simulated surface casing to move.

2. The deep sea expansion material performance testing system according to claim 1, characterized in that: It also includes a pressure control mechanism, which includes a pressure control pipeline and a pressure control component arranged on the pressure control pipeline. The pressure control pipeline is connected to the kettle body, and the pressure control mechanism can be used to adjust the pressure in the kettle body.

3. The deep sea expansion material performance testing system according to claim 2, characterized in that: The pressure control assembly comprises a gas tank, a pressure boosting device and a pressure regulating device, and the gas tank, the pressure boosting device and the pressure regulating device are connected in series through the pressure control pipeline.

4. The deep sea expansion material performance testing system according to claim 1, characterized in that: It also includes a temperature control mechanism, which includes a temperature control pipeline and a temperature control component arranged on the temperature control pipeline. The temperature control pipeline is heat exchangeably connected to the kettle body, and the temperature control mechanism can be used to adjust the temperature in the kettle body.

5. The deep sea expansion material performance testing system according to claim 4, characterized in that: The temperature control component includes a water bath, a refrigeration element and a temperature control device. The water bath, the refrigeration element and the temperature control device are connected in series through the temperature control pipeline. The refrigeration element and the temperature control device can be used to adjust the temperature of the water bath. At least part of the kettle body is placed in the water bath.

6. The deep sea expansion material performance testing system according to claim 1, characterized in that: It also includes a data acquisition module, the data acquisition module includes a data acquisition system and a data acquisition unit electrically connected to the data acquisition system, the data acquisition system can be used to upload the collected data to a computer, and the data acquisition unit includes a combination of one or more of a displacement sensor, a tension sensor, a pressure sensor, a liquid level sensor and a temperature sensor; Among them, the displacement sensor is used to collect the displacement data of the simulated surface casing, the tension sensor is used to collect the force data of the simulated surface casing, the pressure sensor is used to collect the pressure data in the kettle body, the liquid level sensor is used to collect the liquid level data in the kettle body, and the temperature sensor is used to collect the temperature data in the kettle body.

7. The deep sea expansion material performance testing system according to claim 1, characterized in that: It also includes an adhesion testing mechanism, which includes a limiting member arranged in the kettle body, and a testing channel for the expansion material to enter is provided on the limiting member.

8. The deep sea expansion material performance testing system according to claim 1, characterized in that: The moving mechanism includes a fixing frame and a driving mechanism arranged on the fixing frame, wherein the driving mechanism is connected to the other end of the simulated surface casing and can be used to drive the simulated surface casing to move.

9. The deep sea expansion material performance testing system according to claim 1, characterized in that: The expansion material piece is formed by expanding rubber.

10. A method for testing the performance of deep-sea expansion materials, characterized in that: The steps include: Install and inspect deep sea expansion material performance testing system; Setting a simulated deep-sea environment in the kettle and recording a preset water level in the kettle; Fixing the expansion material piece at a preset position of the simulated surface casing, and recording the initial volume and weight of the expansion material piece; Using a temperature control mechanism to adjust the temperature in the kettle to a preset temperature and / or using a pressure control mechanism to adjust the pressure in the kettle to a preset pressure; When the environmental parameters in the kettle reach the preset values, the data acquisition module is started to collect data; Controlling the simulated surface casing to perform a test operation, and recording data parameters of the simulated surface casing during the test operation; The performance data of the expanded material piece is calculated based on the data parameters.

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