CN211206505U - Full-flowing ball type injection device for laboratory and shipborne - Google Patents
Full-flowing ball type injection device for laboratory and shipborne Download PDFInfo
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- CN211206505U CN211206505U CN201922263986.2U CN201922263986U CN211206505U CN 211206505 U CN211206505 U CN 211206505U CN 201922263986 U CN201922263986 U CN 201922263986U CN 211206505 U CN211206505 U CN 211206505U
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Abstract
The utility model provides a full flowing ball type injection device for laboratory and shipborne, belongs to seabed soft soil mechanical properties test technical field, including device soil mechanical properties measurement system, device control and data acquisition system, device carry on with static force injection system. The soil mechanical property measuring system optimizes the type, quantity and position of the built-in sensors based on the damage state of the sample, and realizes reliable and real test data; the device control and data acquisition system performs intelligent judgment and forms an operation command by combining the acquired data based on the working condition requirement; after the device carrying and static force injection system receives the operation command, the device soil mechanical property measuring system is carried to realize intelligent test. The three systems feed each other in real time, continuously update and optimize the test state, work cooperatively and can complete various complex working condition tests. The utility model discloses it is many, the precision is high, the operation is intelligent, concrete overload protection function to record the parameter, has solved the not enough of present indoor and on-board ocean weak soil mechanical properties test.
Description
Technical Field
The utility model belongs to the technical field of seabed weak soil mechanical properties tests, relate to seabed weak soil mechanical properties including not drainage shear strength, pore water pressure, injection resistance, especially to the seabed super soft soil that has low strength, high water content, high sensitivity characteristic.
Background
With the vigorous advance of the exploitation of marine oil and gas and deep sea mineral resources, the construction of marine engineering facilities including submarine pipelines, marine foundations, underwater production systems, etc. will be actively developed. As the core work of the early evaluation of engineering construction, the evaluation of seabed bearing capacity, seabed slope stability and marine geological disaster risk is the premise of ensuring environmental stability and production safety. The development of these specific tasks is not independent of the mechanical parameters of the ocean soil. Therefore, the method can accurately obtain the non-drainage shear strength, the pore water pressure and the penetration resistance of the ocean soil, particularly the shallow surface layer ocean soil, and has important scientific significance and engineering value.
Currently, methods for obtaining marine soil mechanics parameters mainly include in-situ testing and indoor experiments. Among the in situ test methods, the cross plate shear test (VST), the cone static Cone Penetration Test (CPT), and the full flow penetration test are most widely used. However, although the in-situ test can avoid disturbance to the soil body in the sampling and transporting process and can maintain the stress environment in the testing process, the testing cost is very high, the operation is complex, the influence of environmental factors is large, the precision is difficult to ensure, and the stability of the testing process is poor. As a natural material formed under different deposition environments and stress historical conditions, the soil property, the physical property, the mechanical property and the like of a soil body have great differences, and the natural material is difficult to be considered in a refined manner in an in-situ test. Therefore, after the marine soil sample is sampled, the development of refined indoor and shipborne tests is an effective solution.
The indoor test mainly comprises a triaxial shear test, a direct shear test, an unconfined compression test, an indoor cross plate shear test and the like. The testing technical means mainly aim at the marine soil body which has high strength, low water content and easy sample preparation. However, these indoor testing approaches have the following disadvantages: the method has the advantages of difficult sample preparation, large sample consumption, long test period, low test precision, insufficient obtained soil mechanical parameters, difficult realization of continuous test and the like. For marine (ultra) soft soil with low strength, high water content and high sensitivity, the test is more difficult to develop, and accurate evaluation is given. At present, full-flow penetrometers with more accurate theoretical solutions have been primarily applied to indoor testing. However, the existing full-flow penetrometer has poor integrity, low testing precision, poor stability, insufficient intelligent degree, insufficient matching between pore water pressure and soil destruction state, difficult realization of cycle test, more importantly, the shallow surface soil test has theoretical defects and the like, and is difficult to meet the requirement of ocean soil mechanical property evaluation. More importantly, in offshore operations, this involves: marine geological exploration, engineering construction and scientific investigation urgently need to efficiently, timely and accurately acquire the mechanical characteristics of marine soil so as to guide further marine operation. However, there are currently few full flow penetration devices for on-board ships. Therefore, it is desirable to develop a full flow penetration device suitable for laboratories and ships to solve the above problems.
SUMMERY OF THE UTILITY MODEL
In order to solve the defects of the mechanical property test of the current indoor and shipborne marine soft soil, the device capable of testing the non-drainage shear strength, the pore water pressure and the penetration resistance of the marine soft soil is provided, the device has the advantages of high sensor precision, customizable spherical probe function, intelligent control of the device, strong coordination and high stability, and the principle and the using method of the device are elaborated to meet the requirement of the mechanical property evaluation of the marine soil.
In order to achieve the above purpose, the technical scheme of the utility model is that:
a full-flowing ball type penetration device for laboratories and ships comprises a device soil mechanical property measuring system, a device control and data acquisition system, a device carrying and static force penetration system. The soil mechanical property measuring system feeds back the working state and the test data in the test process to the device control and data acquisition system in real time through the built-in high-precision sensor which can be optimally designed and is independently arranged. After the device control and data acquisition system receives the working state and the test data from the device soil mechanical property measurement system, the intelligent judgment is carried out by combining the preset test working condition, then an operation command is formed and applied to the device carrying and static force injection system, and the data are stored, backed up and uploaded simultaneously. After the device carrying and static force injection system receives the operation command from the device control and data acquisition system, the device carrying and static force injection system carries the device soil mechanical property measurement system, and intelligent testing is realized. The three systems feed each other in real time, continuously update and optimize the test state, realize cooperative work, and achieve the purpose of testing the required complex working condition, as shown in fig. 1.
The soil mechanical property measuring system comprises a telescopic probe rod 1, a high-precision micro pressure sensor 2, a fixed connection point 3, a rigid short rod 4, a spherical probe 5, a high-precision micro pore water pressure sensor 6 and a water inlet hole 7, wherein the telescopic probe rod 1 is a rigid L type telescopic round rod, the inner part of the telescopic probe rod is of a hollow structure, the length of the probe rod can be automatically adjusted according to the penetration depth, the hollow structure is provided with a space for accommodating the high-precision micro pressure sensor 2 and a sensor data transmission line 8, the end part of the horizontal section is connected with a horizontal connecting piece 13 in a static penetration system through a connecting bolt 12 and a device, the end part of the vertical section is connected with the spherical probe 5 through the rigid short rod 4 to play a role in pressing the spherical probe 5 into a sample, the high-precision micro pressure sensor 2 can be replaced according to the required testing precision and the measuring range, the high-precision pressure sensor can be replaced by adopting an optical fiber grating pressure sensor, a piezoelectric pressure sensor, a strain gauge pressure sensor, the probe, the micro pressure sensor and the like, the high-pressure sensor are placed in the telescopic probe rod 1, the telescopic probe 5 can be connected with the micro pore pressure sensor, the micro pore pressure sensor can be replaced by adopting a high-pressure sensor, the high-pressure sensor can be replaced by the high-pressure sensor, the micro pore pressure sensor can be replaced by the high-pressure sensor, the micro pore pressure sensor, the high-pressure sensor can be replaced by the high-pressure sensor, the micro pore pressure sensor can be replaced by the high-pressure sensor, the micro pore pressure sensor can be replaced by the micro pore pressure sensor, the micro pore pressure sensor is replaced by the micro pore pressure sensor, the micro pore pressure sensor is replaced by the micro pore pressure.
The device control and data acquisition system comprises a sensor data transmission line 8, a data acquisition instrument 9, a microcomputer 10, a controller 19, a driver 20, a power supply 21 and a connecting line 22. One end of the sensor data transmission line 8 is connected with the high-precision micro pressure sensor 2 and the high-precision micro pore water pressure sensor 6, and the other end is connected with the data acquisition instrument 9, so that the data measured by the high-precision micro pressure sensor 2 and the high-precision micro pore water pressure sensor 6 are transmitted in real time; the data acquisition instrument 9 needs to be selected according to different sensor types, stores and automatically updates data measured by the high-precision micro pressure sensor 2 and the high-precision micro pore water pressure sensor 6 in real time, and transmits the data to the microcomputer 10 through a connecting wire 22; the microcomputer 10 is the core of the control system, inputs the working condition information to be tested into the microcomputer, can judge according to internal software, applies an operation command to the controller 19 through the connecting line 22, can also store and process data from the data acquisition instrument 9 in real time, and then compares the data with a threshold value, intelligently determines the information of the current test soil sample and the working state of the device, automatically judges whether the test is continued, ensures the test safety of the device and avoids overload damage; the controller 19 receives an operation command from the microcomputer 10 and applies an instruction to the driver 20; the driver 20 further receives the operation command of the controller 19 and applies the command to the stepping motor 17, and the driver is selected to match with the stepping motor 17; the power supply 21 provides electric support for the whole control device and can be matched with different working environments, particularly shipborne environments; the connecting line 22 plays a role in signal transmission and power transmission.
The device carrying and static force penetration system comprises a inclinometer 11, a connecting bolt 12, a horizontal connecting piece 13, a movable hinged piece 14, a connecting slide block 15, a ball screw 16, a stepping motor 17 and a supporting platform 18. The inclinometer 11 is arranged at the horizontal section of the telescopic probe rod 1 and plays a role in testing the inclination angle of the telescopic probe rod 1 so as to ensure that the telescopic probe rod 1 can vertically penetrate; the connecting bolt 12 plays a role in connecting the horizontal section of the telescopic probe rod 1 with the horizontal connecting piece 13, and the spherical probe 5 can achieve the purpose of testing different positions of a sample through plane rotation; the horizontal connecting piece 13 is connected with the connecting slide block 15 through the movable hinge piece 14, and the horizontal connecting piece 13 with different lengths can be replaced according to the space size of a test sample; the connecting slide block 15 is positioned on the ball screw 16; the ball screw 16 is connected with the supporting platform 18 through the movable hinge 14, and the position of the ball screw 16 can be adjusted in the horizontal direction; the stepping motor 17 is arranged at the top end of the ball screw 16, is connected with the driver 20 through a connecting line 22, receives a command from the driver 20 and further gives the telescopic probe rod 1 accurate penetration speed; the supporting platform 18 is a framework of the whole device carrying and static force penetration system, and plays a role in supporting and maintaining stability.
A method of using a full flow ball penetration device for laboratory and shipboard use, comprising the steps of:
firstly, selecting the types of the high-precision micro pressure sensor 2 and the high-precision micro pore water pressure sensor 6 according to the specific requirements of the test including the test precision and the test parameters, and determining a data acquisition instrument 9 matched with the types. And the high-precision micro pressure sensor (2) and the high-precision micro pore water pressure sensor (6) are respectively calibrated, the high-precision micro pressure sensor (2) is calibrated in a mode of standard weight graded loading, and the high-precision micro pore water pressure sensor (6) is calibrated in a mode of sealed cabin graded pressurization.
And secondly, respectively processing the probe and the probe rod, and integrally calibrating the instrument. First, the ratio of the cross-sectional areas of the retractable probe rod 1 and the type probe 5 should be less than 0.25 (0.1 is recommended) according to the requirements of the full-flow penetration mechanism. Then, the high-precision micro pressure sensor 2, the fixed joint 3, the rigid short rod 4 and the sensor data transmission line 8 are installed as shown in fig. 2. Then, because the failure modes of different areas of the sample contacted with the probe are different, the positions and the number of the high-precision micro pore water pressure sensors 6 need to be optimally designed and determined according to actual working conditions. The spherical probe 5, the high-precision micro pore water pressure sensor 6, the water inlet 7 and the sensor data transmission line 8 are installed as shown in the figure 2, the figure 4 and the figure 5. And finally, calibrating the test results of the whole probe and the probe rod again based on the calibration method of the first step, wherein the requirement is consistent with the calibration result of the first step, and the error generated in the installation process of the device is reduced.
And thirdly, according to the diagrams in fig. 2 and 3, connecting the device soil mechanical property measuring system, the device control and data acquisition system and the device carrying with a static force injection system together to ensure that the inclinometer 11 meets the working requirements, selecting the power supply 21 according to the working environment, switching on the power supply 21, debugging the stability, reliability and connection state of the three systems, and realizing the mutual feed control of the three systems in the injection process.
And fourthly, meeting the requirements of the soil sample to be tested. The center of the spherical probe 5 is at least 1.5 times (2 times or more is recommended) the diameter of the spherical probe 5 away from the boundary of the soil sample to be tested, so as to ensure that the influence of the boundary effect in the test process can be ignored. The boundary specifically refers to the side and bottom of the soil sample to be tested.
And fifthly, determining the threshold value as the measuring ranges of the high-precision micro pressure sensor 2 and the high-precision micro pore water pressure sensor 6. The threshold value is input into the microcomputer 10 in advance, and when the data acquired in real time in the test process exceeds the threshold value, the whole experiment system is self-protected, and the penetration process is stopped.
Sixthly, placing the soil sample to be tested below the spherical probe 5, adjusting the position of the probe to just contact the soil sample to be tested, inputting the required working conditions of the test such as the penetration speed, the circulation test parameters, the penetration stop position and the like into the microcomputer 10, and carrying out the penetration test. When the penetration can be stopped at a predetermined position, the dissipation data of the excess pore water pressure at the position is measured.
And seventhly, after the test is finished, turning off the power supply, cleaning the probe and the probe rod, extracting test data in the microcomputer 10 and carrying out data analysis.
The utility model discloses an effect and benefit are: the device is small in scale, simple and convenient to connect, intelligent in operation, safe and reliable, high in precision of a sensing technology, has a self-protection function, achieves intelligent control of three systems, is strong in coordination, high in stability and high in precision, and overcomes the defect of mechanical property testing of current indoor and shipborne marine soft soil. Meanwhile, the non-drainage shear strength, pore water pressure and penetration resistance of the ocean soft soil can be accurately tested. According to different damage mechanisms of the samples in the test process, the positions and the number of the pore water pressure sensors can be optimized and set in combination with the requirements of actual working conditions, and the test of the dissipation process of the excess pore water pressure at any position where the probe is in contact with the soil body is realized.
Drawings
FIG. 1 is a schematic diagram of the logic between systems of the device;
FIG. 2 is a schematic diagram of control and data acquisition and soil mechanics property measurement;
FIG. 3 is a schematic view of a piggyback and static penetration system;
FIG. 4 is a schematic view of the vertical section, upper hemisphere, of the probe;
FIG. 5 is a schematic horizontal cross-section of a probe;
FIG. 6 is a schematic view of the vertical section, i.e., the lower hemisphere, of the probe;
in the figure: 1, a telescopic probe rod; 2, a high-precision miniature pressure sensor; 3, fixing the contact; 4 rigid short rods; 5, a spherical probe; 6 high-precision micro pore water pressure sensor; 7, water inlet holes; 8 sensor data transmission lines; 9, a data acquisition instrument; 10 a microcomputer; 11 inclinometer; 12 connecting bolts; 13 a horizontal connector; 14 a movable hinge; 15 connecting the sliding block; 16 ball screws; 17 a stepping motor; 18 supporting the platform; 19 a controller; 20 a driver; 21, a power supply; 22 connecting the wires.
Detailed Description
The following describes the embodiments of the present invention in detail with reference to the technical solutions (and the accompanying drawings).
A full flowing ball type injection device for laboratory and shipborne, including device soil mechanics nature measurement system, device control and data acquisition system, device carry-on and static force injection system
The soil mechanical property measuring system comprises a telescopic probe rod 1, a high-precision micro pressure sensor 2, a fixed connection point 3, a rigid short rod 4, a spherical probe 5, a high-precision micro pore water pressure sensor 6 and a water inlet hole 7, wherein the telescopic probe rod 1, the rigid short rod 4 and the spherical probe 5 are made of high-performance TC4 titanium alloy materials, the telescopic probe rod 1 is a L type rigid circular rod with the diameter of 10mm and the wall thickness of 0.5mm, the inner part of the telescopic probe rod is of a hollow structure, the length of the telescopic probe rod can be automatically adjusted, one end of the telescopic probe rod is bonded with the high-precision micro pressure sensor 2 through the fixed connection point 3, the high-precision micro pressure sensor 2 is an optical fiber grating pressure sensor, the fixed connection point 3 can be bonded by special glue, the rigid short rod 4 is a rigid hollow short rod with the diameter of 7mm and the wall thickness of 0.5mm, one end of the high-precision micro pressure sensor 2 is connected with the other end of the spherical probe 5, the inner part of the telescopic probe rod is connected with the sensor through a sensor data transmission line 8, the diameter of the telescopic probe rod is 0.7 mm, the diameter of the telescopic probe rod 1, the telescopic probe rod is not in contact with the water pressure sensor 1, the spherical probe rod is directly placed in the horizontal pore water pressure sensor, the spherical probe head, the horizontal pore of the spherical probe rod, the high-precision micro pressure sensor, the spherical probe rod, the spherical probe head is placed in the spherical.
The device control and data acquisition system comprises a sensor data transmission line 8, a data acquisition instrument 9, a microcomputer 10, a controller 19, a driver 20, a power supply 21 and a connecting line 22. One end of the sensor data transmission line 8 is connected with the high-precision micro pressure sensor 2 and the high-precision micro pore water pressure sensor 6, and the other end is connected with the data acquisition instrument 9, so that the data measured by the high-precision micro pressure sensor 2 and the high-precision micro pore water pressure sensor 6 are transmitted in real time; the data acquisition instrument 9 needs to be selected according to different sensor types, stores and automatically updates data measured by the high-precision micro pressure sensor 2 and the high-precision micro pore water pressure sensor 6 in real time, and transmits the data to the microcomputer 10 through a connecting wire 22; the microcomputer 10 is the core of the control system, inputs the working condition information to be tested into the microcomputer, can judge according to internal software, applies an operation command to the controller 19 through the connecting line 22, can also store and process data from the data acquisition instrument 9 in real time, and then compares the data with a threshold value, intelligently determines the information of the current test soil sample and the working state of the device, automatically judges whether the test is continued, ensures the test safety of the device and avoids overload damage; the controller 19 receives an operation command from the microcomputer 10 and applies an instruction to the driver 20; the driver 20 further receives the operation command of the controller 19 and applies the command to the stepping motor 17, and the driver is selected to match with the stepping motor 17; the power supply 21 provides electric support for the whole control device; the connecting line 22 plays a role in signal transmission and power transmission.
The device carrying and static force penetration system comprises a inclinometer 11, a connecting bolt 12, a horizontal connecting piece 13, a movable hinged piece 14, a connecting slide block 15, a ball screw 16, a stepping motor 17 and a supporting platform 18. The inclinometer 11 is arranged at the horizontal section of the telescopic probe rod 1 and plays a role in testing the inclination angle of the telescopic probe rod 1 so as to ensure that the telescopic probe rod 1 can vertically penetrate; the connecting bolt 12 plays a role in connecting the horizontal section of the telescopic probe rod 1 with the horizontal connecting piece 13, and the spherical probe 5 can achieve the purpose of testing different positions of a sample through plane rotation; the horizontal connecting piece 13 is connected with the connecting slide block 15 through the movable hinge piece 14, and the horizontal connecting piece 13 with different lengths can be replaced according to the space size of a test sample; the connecting slide block 15 is positioned on the ball screw 16; the ball screw 16 is connected with the supporting platform 18 through the movable hinge 14, and the position of the ball screw 16 can be adjusted in the horizontal direction; the stepping motor 17 is arranged at the top end of the ball screw 16, is connected with the driver 20 through a connecting line 22, receives a command from the driver 20 and further gives the telescopic probe rod 1 accurate penetration speed; the supporting platform 18 is a framework of the whole device carrying and static force penetration system, and plays a role in supporting and maintaining stability.
The use method of the full-flow ball type penetration device for laboratories and ships is realized based on the device system and comprises the following steps:
in the first step, a single sensor is calibrated. Calibrating the high-precision miniature pressure sensor 2 by adopting a standard weight grading loading mode; and calibrating the high-precision micro pore water pressure sensor 6 by adopting a sealed cabin grading pressurization mode.
And secondly, calibrating the whole instrument. Based on the calibration method of the first step, the test results of the whole probe and the probe rod are calibrated again, the requirement is consistent with the calibration result of the first step, and errors generated in the installation process of the device are reduced.
And thirdly, jointly debugging all systems of the device. The device soil mechanical property measuring system, the device control and data acquisition system, the device carrying and static force injection system are connected together, the inclinometer 11 is ensured to meet the working requirement, the power supply 21 is switched on, the stability, reliability and connection state of the three systems are debugged, and the three systems in the injection process are controlled to realize mutual feedback.
And fourthly, preparing a soil sample to be detected. The center of the spherical probe 5 is at least 40mm away from the boundary of the soil sample to be tested, so as to ensure that the influence of the boundary effect in the test process can be ignored. The penetration depth is more than 40mm from the bottom.
And fifthly, inputting a threshold value. The measuring ranges of the high-precision micro pressure sensor 2 and the high-precision micro pore water pressure sensor 6 are used as a determined threshold value. The threshold value is input into the microcomputer 10, and when the data acquired in real time in the test process exceeds the threshold value, the whole experiment system stops the injection process, so that overload self-protection is realized.
And sixthly, testing the working condition. The soil sample to be tested is placed below the spherical probe 5, the position of the probe is adjusted until the probe just contacts the soil sample to be tested, specific technical requirements such as 2mm/s penetration speed, 10-time cycle penetration instruction, dissipation data of the excess pore water pressure after penetration to the lowest position, stopping penetration and testing of the position are input into the microcomputer 10, the whole device is started, and penetration testing is carried out.
And seventhly, after the test is finished, turning off the power supply, cleaning the probe and the probe rod, extracting test data in the microcomputer 10, carrying out data analysis based on the current theory, and optimizing further test work.
The above-mentioned embodiments only represent the embodiments of the present invention, but can not be understood as the limitation of the scope of the present invention, and it should be noted that, for those skilled in the art, a plurality of variations and improvements can be made without departing from the concept of the present invention, and all of them belong to the protection scope of the present invention.
Claims (4)
1. A full-flow ball type penetration device for laboratories and ships is characterized by comprising a device soil mechanical property measuring system, a device control and data acquisition system, a device carrying and static force penetration system; the soil mechanical property measuring system feeds working states and test data in the test process back to the device control and data acquisition system in real time through a built-in high-precision sensor, the device control and data acquisition system carries out intelligent judgment by combining preset test working conditions after receiving the data, forms an operation command, applies the operation command to the device carrying and static force injection system, and simultaneously stores, backs up and uploads the data; after the device carrying and static force injection system receives the operation command, the device carrying and static force injection system carries the device soil mechanical property measuring system to realize intelligent test;
the soil mechanical property measuring system comprises a telescopic probe rod (1), a high-precision micro pressure sensor (2), a fixed connection point (3), a rigid short rod (4), a spherical probe (5), a high-precision micro pore water pressure sensor (6) and a water inlet hole (7), wherein the telescopic probe rod (1) is a rigid L type telescopic circular rod, the interior of the telescopic probe rod is of a hollow structure, the length of the probe rod can be automatically adjusted according to the penetration depth, the end part of the horizontal section of the telescopic probe rod (1) is connected with a horizontal connecting piece (13) in a static penetration system in a lap-on mode through a connecting bolt (12), the end part of the vertical section is connected with the spherical probe (5) through the rigid short rod (4) and used for pressing the spherical probe (5) into a sample, the high-precision micro pressure sensor (2) can be replaced and placed in the vertical section of the telescopic probe rod (1) and is fixedly connected with the telescopic probe rod (1) through the fixed connection point (3) to achieve the working state that the cantilever is fixed on the side surface of the spherical probe rod, one end of the rigid short rod (4) is connected with the high-precision micro pressure sensor (2), the high-precision micro pore water pressure sensor (5) is directly applied to the sample through the high-precision test probe rod, the spherical probe rod, the high-precision micro pore water pressure sensor (5) is directly applied to the high-precision test sample, the high-precision test probe (5) through the high-precision test probe (5), the high-precision test probe rod, the high-precision micro pore water pressure sensor (5) in the high-pressure sensor, the high-precision test sample, the high-precision test probe rod;
the device control and data acquisition system comprises a sensor data transmission line (8), a data acquisition instrument (9), a microcomputer (10), a controller (19), a driver (20), a power supply (21) and a connecting line (22); one end of the sensor data transmission line (8) is connected with the high-precision micro pressure sensor (2) and the high-precision micro pore water pressure sensor (6), the other end of the sensor data transmission line is connected with the data acquisition instrument (9), the data acquisition instrument (9) is connected with the microcomputer (10) through a connecting line (22), and the microcomputer (10) is connected with the controller (19); the microcomputer (10) applies an operation command to the controller (19) through a connecting line (22), can store and process data from the data acquisition instrument (9) in real time, and further intelligently determines the information of the current test soil sample and the working state of the device after comparing with a threshold value, and automatically judges whether the test is continued or not; the controller (19) applies an operation command to the stepping motor (17) by the driver (20); the power supply (21) provides electric power support for the whole control device and can be matched with different working environments;
the device carrying and static force penetration system comprises a inclinometer (11), a connecting bolt (12), a horizontal connecting piece (13), a movable hinge piece (14), a connecting slide block (15), a ball screw (16), a stepping motor (17) and a supporting platform (18); the inclinometer (11) is arranged at the horizontal section of the telescopic probe rod (1) and used for testing the inclination angle of the telescopic probe rod (1) and ensuring that the telescopic probe rod (1) is vertically penetrated; the connecting bolt (12) rotates through a plane, so that the spherical probe (5) can achieve the purpose of testing different positions of a sample; the horizontal connecting piece (13) is connected with a connecting sliding block (15) through a movable hinge piece (14); the connecting slide block (15) is positioned on the ball screw (16); the ball screw (16) is connected with the supporting platform (18) through a movable hinge (14), and the position of the ball screw (16) can be adjusted in the horizontal direction; the stepping motor (17) is arranged at the top end of the ball screw (16) and receives a command from the driver (20) to accurately control the penetration speed of the telescopic probe rod (1); the supporting platform (18) is a framework of the whole device carrying and static force penetration system, and plays a role in supporting and maintaining stability.
2. The full flow ball-type penetration device for laboratory and shipboard according to claim 1, wherein the high-precision micro pressure sensor (2) is a high-precision pressure sensor that can be replaced according to the required test precision and range, and comprises a fiber grating pressure sensor, a piezoelectric pressure sensor, and a strain gauge pressure sensor.
3. The full flow sphere type penetration device for laboratory and shipborne use according to claim 1, wherein the high precision micro pore water pressure sensor (6) is a high precision micro pore water pressure sensor that can be replaced according to the required test precision and range, including a fiber grating osmometer.
4. The full-flow ball type penetration device for laboratories and ships according to claim 1, wherein the high-precision micro pore water pressure sensor (6) is used for testing the change value of the pore water pressure of the soil body contacting with different positions of the ball type probe (5) in the testing process by changing the spatial position of the high-precision micro pore water pressure sensor (6) on the ball type probe (5) in the penetration process.
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| CN201922263986.2U CN211206505U (en) | 2019-12-17 | 2019-12-17 | Full-flowing ball type injection device for laboratory and shipborne |
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| CN201922263986.2U CN211206505U (en) | 2019-12-17 | 2019-12-17 | Full-flowing ball type injection device for laboratory and shipborne |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824147A (en) * | 2019-12-17 | 2020-02-21 | 大连理工大学 | Full-flowing ball type penetration device and method for laboratory and shipborne |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110824147A (en) * | 2019-12-17 | 2020-02-21 | 大连理工大学 | Full-flowing ball type penetration device and method for laboratory and shipborne |
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