CN111811844A - Storage tank settlement testing device and method for testing tank wall change - Google Patents
Storage tank settlement testing device and method for testing tank wall change Download PDFInfo
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- CN111811844A CN111811844A CN201910289314.0A CN201910289314A CN111811844A CN 111811844 A CN111811844 A CN 111811844A CN 201910289314 A CN201910289314 A CN 201910289314A CN 111811844 A CN111811844 A CN 111811844A
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- 238000012360 testing method Methods 0.000 title claims abstract description 56
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000008859 change Effects 0.000 title abstract description 8
- 238000004088 simulation Methods 0.000 claims abstract description 48
- 230000007246 mechanism Effects 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims description 8
- 239000000835 fiber Substances 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000010998 test method Methods 0.000 claims 1
- 238000004062 sedimentation Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 230000003028 elevating effect Effects 0.000 description 6
- 238000013499 data model Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/18—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge using photoelastic elements
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a storage tank settlement testing device and a method for testing tank wall change, wherein the device comprises: the device comprises a simulation storage tank, a plurality of lifting mechanisms, a test platform, a control module, a stress strain sensor and a regulator. Wherein the simulated storage tank is used for simulating a large storage tank. The plurality of lifting mechanisms are arranged between the simulation storage tank and the test platform and used for driving the simulation storage tank to do lifting motion. The stress strain sensor is arranged at a preset position of the wall of the simulated storage tank. The regulator is used for iterating the actual settlement data of the large storage tank to obtain a fitting function. And the control module is used for controlling the plurality of lifting mechanisms to work according to the fitting function. The invention can realize the simulation of the sedimentation process of the storage tank, so that the stress and deformation state of the tank wall can be tested and analyzed after the storage tank is sedimentated, and the storage tank can be used safely and effectively subsequently.
Description
Technical Field
The invention relates to the technical field of petroleum engineering, in particular to a storage tank settlement testing device and a method for testing tank wall change.
Background
With the rapid increase of the demand of oil and gas resources, a plurality of large storage tanks for storing the oil and gas resources are built all over the country, and with the increase of the number of the storage tanks and the development of large-scale storage tanks, the large storage tanks in China are mostly intensively arranged in coastal areas in order to facilitate the transportation of the large storage tanks. However, the soil quality of the coastal region is soft, the bearing capacity of the foundation is poor, and the storage tank in the coastal region can be settled along with the increase of the service life, so that the subsequent normal use of the storage tank is influenced. Therefore, in order to ensure the safe and effective use of the storage tank, it is necessary to test the influence of the foundation settlement on the storage tank.
Disclosure of Invention
The embodiment of the invention provides a storage tank settlement testing device, which is used for testing the stress and deformation state of a tank wall after a storage tank is settled, and ensuring that the storage tank can be used safely and effectively subsequently, and comprises: the device comprises a simulation storage tank, a plurality of lifting mechanisms, a test platform, a control module, a stress strain sensor and a regulator;
the simulation storage tank is used for simulating a large storage tank;
the plurality of lifting mechanisms are arranged between the simulation storage tank and the test platform and are used for driving the simulation storage tank to do lifting motion;
the stress strain sensor is arranged at a preset position on the wall of the simulated storage tank;
the regulator is used for iterating the actual settlement data of the large storage tank to obtain a fitting function;
the control module is used for controlling the plurality of lifting mechanisms to work according to the fitting function.
Optionally, the stress-strain sensor is a fiber grating stress sensor.
Optionally, the apparatus further comprises: and the supporting piece is arranged between the simulation storage tank and the plurality of lifting mechanisms.
Optionally, a plurality of the lifting mechanisms are uniformly arranged at the bottom of the simulation storage tank along the circumferential direction.
Optionally, the wall thickness of the simulated tank is 1.5mm-3 mm.
Optionally, the test platform is made of reinforced concrete.
Optionally, the stress-strain sensor is arranged on the tank wall of the simulated storage tank in a sticking manner.
Optionally, the volume ratio of the simulated storage tank to the large storage tank is 1:19-1: 13.
The embodiment of the invention also provides a method for testing the change of the tank wall by using the storage tank settlement testing device, which comprises the following steps:
injecting a preset amount of liquid medium into the simulation storage tank, and measuring a first stress and a deformation state of the tank wall by using a stress-strain sensor;
inputting actual settlement data of the large storage tank into a regulator, iterating to obtain a fitting function, and controlling a plurality of lifting mechanisms to work by a control module according to the fitting function so as to drive the simulation storage tank to do lifting motion;
and measuring a second stress and deformation state of the tank wall by using the stress-strain sensor, and comparing and analyzing the second stress and deformation state of the tank wall with the first stress and deformation state.
Optionally, the method further includes:
when the plurality of lifting mechanisms drive the simulation storage tank to do lifting motion, a preset amount of liquid medium is added into the simulation storage tank.
According to the storage tank settlement testing device and the method for testing the change of the tank wall, provided by the embodiment of the invention, the simulation of a large storage tank can be realized by arranging the simulation storage tank, so that the subsequent testing work is facilitated. The stress and strain sensor is arranged at the preset position of the tank wall of the simulated storage tank, so that the stress and the deformation state of the tank wall can be measured in real time. Through setting up test platform, realized the support to simulation storage tank and a plurality of elevating system. Through setting up a plurality of elevating system, control module, stress strain transducer, regulator, can be with the actual data iteration of subsiding of large-scale storage tank go out the fitting function, make a plurality of elevating system work of control module control according to the fitting function, realized the simulation to the storage tank process of subsiding to after the follow-up test analysis storage tank takes place to subside, the stress and the deformation state of tank wall ensure that the follow-up safe effectual use that can of storage tank.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts. In the drawings:
FIG. 1 is a schematic structural diagram of a tank settlement testing device in an embodiment of the invention;
FIG. 2 is a front view of a tank settlement test apparatus in an embodiment of the present invention.
The reference numbers are as follows:
1 simulating a storage tank, wherein the storage tank is,
2 a lifting mechanism is arranged on the frame,
3, testing the platform by a test platform,
and 4, a control module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are further described in detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
The following "large tank" means: actual storage tanks at the job site.
In one aspect, an embodiment of the present invention provides a tank settlement testing apparatus, as shown in fig. 1 and 2, the apparatus including: the device comprises a simulation storage tank 1, a plurality of lifting mechanisms 2, a test platform 3, a control module 4, a stress strain sensor and a regulator. Wherein the simulated tank 1 is used for simulating a large tank. The plurality of lifting mechanisms 2 are arranged between the simulation storage tank 1 and the test platform 3 and are used for driving the simulation storage tank 1 to do lifting motion. The stress strain sensor is arranged at a preset position on the tank wall of the simulation storage tank 1. The regulator is used for iterating the actual settlement data of the large storage tank to obtain a fitting function. And the control module 4 is used for controlling the plurality of lifting mechanisms 2 to work according to the fitting function.
The working principle of the storage tank settlement testing device provided by the embodiment of the invention is as follows:
a predetermined amount of liquid medium (which may be water, oil, etc., and is generally water) is injected into the simulated tank 1, and a stress-strain sensor is used to measure a first stress and deformation state of the tank wall. Inputting actual settlement data of the large storage tank into the regulator, iterating to obtain a fitting function, and controlling the plurality of lifting mechanisms 2 to work by the control module 4 according to the fitting function so as to drive the simulation storage tank 1 to do lifting motion. And measuring a second stress and deformation state of the tank wall by using the stress-strain sensor, and comparing and analyzing the second stress and deformation state of the tank wall with the first stress and deformation state. By controlling the plurality of lifting mechanisms 2 to perform different lifting operations, the simulation storage tank 1 can simulate various settlement modes of the foundation, such as uniform settlement of the foundation, inclined settlement of the foundation, uneven settlement of the foundation and the like.
According to the storage tank settlement testing device provided by the embodiment of the invention, the simulation of the large storage tank can be realized by arranging the simulation storage tank 1, so that the subsequent testing work is facilitated. Stress and strain sensors are arranged at preset positions of the tank wall of the simulated storage tank 1, so that the stress and the deformation state of the tank wall can be measured in real time. Through setting up test platform 3, realized the support to simulation storage tank 1 and a plurality of elevating system 2. Through setting up a plurality of elevating system 2, control module 4, stress strain transducer, regulator, can be with the actual data iteration of subsiding of large-scale storage tank go out the fitting function, make control module 4 control a plurality of elevating system 2 work according to the fitting function, realized the simulation to the storage tank process of subsiding to after the follow-up test analysis storage tank takes place to subside, the stress and the deformation state of tank wall ensure that the storage tank is follow-up can safe effectual use.
The simulation storage tank 1 is prepared and molded by a large storage tank after being reduced according to a certain proportion, and specifically, the volume ratio of the simulation storage tank 1 to the large storage tank can be 1:19-1:13 (such as 1:15, 1:16 and the like). The material may be steel, and the thickness may be 1.5mm to 3mm (2mm, 2.5mm, etc.).
The regulator can extract a fitting function according to the actual sedimentation data of the large storage tank by a Fourier transform or Taylor series iteration method, and then the fitting function is converted into an electric signal by the control module to control the plurality of lifting mechanisms 2 to work.
The structure of the testing platform 3 may be various, for example, it may be a square plate structure, a circular plate structure, etc. The test platform can be made of reinforced concrete to ensure that the test platform 3 has enough strength and can bear larger pressure.
The stress strain sensor may be a fibre grating stress sensor. The "preset position" in which the stress-strain sensor is arranged in the preset position simulating the tank wall of the storage tank 1 means: simulating the position with larger stress and strain on the wall of the storage tank 1. Here, the position where the stress strain is large can be determined by the following method:
collecting relevant parameters of the simulated storage tank 1, establishing a finite element data model by using the relevant parameters, and simulating the simulated storage tank 1, wherein the positions with larger stress and strain on the storage tank 1 can be really simulated by calculating the stress and strain conditions of each position of the finite element data model. Alternatively, the position where the stress-strain change is large can be determined by analyzing the stress-strain with numerical analysis software such as ANSYS, ABAQUS, and the like.
The control module 4 can convert the fitting function into an electric signal to realize the control of the plurality of lifting mechanisms 2, the invention can simulate the sedimentation of the tank through the fitting function (comprising multi-order or single-order harmonic function and Taylor series), can simulate different sedimentation states of the storage tank through changing parameters, and then outputs the electric signal.
In order to ensure that the stress-strain sensor is connected and fastened with the simulated storage tank 1 without affecting the use performance of the stress-strain sensor, the stress-strain sensor can be arranged on the tank wall of the simulated storage tank 1 in a sticking manner.
In order to avoid the damage of the bottom of the simulated tank 1 caused by the lifting mechanism 2, the device further comprises: and a support member. The support is arranged between the simulation tank 1 and the plurality of lifting mechanisms 2.
Wherein, the support piece can be a plate body structure, a bracket structure formed by a plurality of rod bodies, and the like.
In order to ensure that the bottom of the simulation storage tank 1 is uniformly stressed, a plurality of lifting mechanisms 2 can be uniformly arranged at the bottom of the simulation storage tank 1 along the circumferential direction.
The number of the lifting mechanisms 2 can be 80-120 (such as 95, 97, 100, etc.).
In another aspect, an embodiment of the present invention provides a method for testing tank wall variation by using the above-mentioned tank settlement testing apparatus, the method including:
a preset amount of liquid medium is injected into the simulated storage tank 1, and a stress-strain sensor is utilized to measure the first stress and deformation state of the tank wall.
Inputting actual settlement data of the large storage tank into the regulator, iterating to obtain a fitting function, and controlling the plurality of lifting mechanisms 2 to work by the control module 4 according to the fitting function so as to drive the simulation storage tank 1 to do lifting motion.
And measuring a second stress and deformation state of the tank wall by using the stress-strain sensor, and comparing and analyzing the second stress and deformation state of the tank wall with the first stress and deformation state.
The invention can iterate the actual sedimentation data of the large-scale storage tank to form a fitting function, so that the control module 4 controls the plurality of lifting mechanisms 2 to work according to the fitting function, the simulation of the sedimentation process of the storage tank is realized, the stress and deformation state of the tank wall after the storage tank is sedimentated is conveniently tested and analyzed in the following process, and the safe and effective use of the storage tank in the following process is ensured.
Further, in order to control the load applied to the simulated tank 1 during the test process and ensure that the device can be adapted to stress and strain tests under a plurality of different conditions, the method further comprises the following steps: when the plurality of lifting mechanisms 2 drive the simulation storage tank 1 to do lifting motion, a preset amount of liquid medium is added into the simulation storage tank 1.
In conclusion, the invention can highly restore the change of the sedimentation safety of the actual storage tank by carrying out sedimentation simulation experiments on the small-proportion storage tank, can directly collect the surface stress and deformation data of the wall of the storage tank through the stress-strain sensor, and can repeatedly measure the sedimentation condition of the storage tank under different liquid levels. In addition, for the experimental medium loaded in the tank, the medium in the tank can be recovered and recycled in two states of loading and unloading respectively. The method is convenient to operate, simple and efficient, can perform settlement tests on the storage tank under different working conditions only by inputting and changing various parameters needing to apply the fitting function during test operation, and then obtains various data of the tank wall, is simple and efficient to operate, and can perform multiple tasks simultaneously.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. A storage tank settlement testing device, comprising: the device comprises a simulation storage tank (1), a plurality of lifting mechanisms (2), a test platform (3), a control module (4), a stress-strain sensor and a regulator;
the simulation storage tank (1) is used for simulating a large storage tank;
the plurality of lifting mechanisms (2) are arranged between the simulation storage tank (1) and the test platform (3) and are used for driving the simulation storage tank (1) to do lifting motion;
the stress strain sensor is arranged at a preset position on the wall of the simulation storage tank (1);
the regulator is used for iterating the actual settlement data of the large storage tank to obtain a fitting function;
the control module (4) is used for controlling the plurality of lifting mechanisms (2) to work according to the fitting function.
2. The tank settling test apparatus of claim 1, wherein the stress strain sensor is a fiber grating stress sensor.
3. The tank settling test apparatus of claim 1, further comprising: the supporting piece is arranged between the simulation storage tank (1) and the plurality of lifting mechanisms (2).
4. The tank settling test apparatus as claimed in claim 1, wherein a plurality of the lifting mechanisms (2) are uniformly arranged at the bottom of the simulated tank (1) in the circumferential direction.
5. The tank settling test apparatus as claimed in claim 1, wherein the simulated tank (1) has a wall thickness of 1.5mm to 3 mm.
6. The tank settlement test device of claim 1, wherein the test platform (3) is formed from reinforced concrete.
7. The tank settlement test device according to claim 1, wherein the stress-strain sensor is provided in a stuck manner on the tank wall of the simulated tank (1).
8. The tank settling test apparatus of claim 1, wherein the volume ratio of the simulated tank (1) to the large tank is 1:19 to 1: 13.
9. A method of testing tank wall variations using the tank settlement test apparatus of any one of claims 1 to 8, the method comprising:
injecting a preset amount of liquid medium into the simulation storage tank (1), and measuring a first stress and a deformation state of the tank wall by using a stress-strain sensor;
inputting actual settlement data of the large storage tank into a regulator, iterating to obtain a fitting function, and controlling a plurality of lifting mechanisms (2) to work by a control module (4) according to the fitting function so as to drive the simulation storage tank (1) to do lifting motion;
and measuring a second stress and deformation state of the tank wall by using the stress-strain sensor, and comparing and analyzing the second stress and deformation state of the tank wall with the first stress and deformation state.
10. The method of claim 9, further comprising:
when the plurality of lifting mechanisms (2) drive the simulation storage tank (1) to do lifting motion, a preset amount of liquid medium is added into the simulation storage tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289314.0A CN111811844A (en) | 2019-04-11 | 2019-04-11 | Storage tank settlement testing device and method for testing tank wall change |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910289314.0A CN111811844A (en) | 2019-04-11 | 2019-04-11 | Storage tank settlement testing device and method for testing tank wall change |
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| CN111811844A true CN111811844A (en) | 2020-10-23 |
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| CN201910289314.0A Pending CN111811844A (en) | 2019-04-11 | 2019-04-11 | Storage tank settlement testing device and method for testing tank wall change |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS539567A (en) * | 1976-07-14 | 1978-01-28 | Toshiyasu Ishikawa | Monitor for settlement of oil storage tank and so on |
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| CN109099884A (en) * | 2018-06-20 | 2018-12-28 | 中国石油天然气集团有限公司 | Storage tank bottom plate sedimentation simulation and automatic monitoring experiment porch |
| CN109214033A (en) * | 2017-07-03 | 2019-01-15 | 中国石油化工股份有限公司 | Storage tank deformation evaluating method and device after settlement of foundation |
-
2019
- 2019-04-11 CN CN201910289314.0A patent/CN111811844A/en active Pending
Patent Citations (7)
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|---|---|---|---|---|
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| CN103279611A (en) * | 2013-05-29 | 2013-09-04 | 东南大学 | Method for optimized arrangement of strain sensor |
| CN109214033A (en) * | 2017-07-03 | 2019-01-15 | 中国石油化工股份有限公司 | Storage tank deformation evaluating method and device after settlement of foundation |
| CN107702686A (en) * | 2017-08-11 | 2018-02-16 | 中国石油天然气集团公司 | Experimental system for the analysis of settlement of foundation tank structure |
| CN107702681A (en) * | 2017-09-01 | 2018-02-16 | 中国石油天然气集团公司 | Simulate the experimental rig and method of Large-scale Storage Tank Foundation sedimentation |
| CN108387204A (en) * | 2018-02-02 | 2018-08-10 | 中国石油天然气集团有限公司 | Tank body strain analog machine and method under settlement of foundation |
| CN109099884A (en) * | 2018-06-20 | 2018-12-28 | 中国石油天然气集团有限公司 | Storage tank bottom plate sedimentation simulation and automatic monitoring experiment porch |
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| Title |
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| 孙钧等: "《城市环境土工学》", 30 June 2005, 上海科学技术出版社 * |
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Application publication date: 20201023 |