阅读说明：本技术 一种软体储油罐使用寿命预测装置和方法 (Device and method for predicting service life of soft oil storage tank ) 是由 杨建雄 王建超 李万利 蔡利海 张鹏 黄忠耀 于 2020-06-30 设计创作，主要内容包括：本发明公开了一种软体储油罐使用寿命预测装置及方法,该装置由平板式氙灯老化箱、测试杯、试样、油压控制单元、输油管路、排气管路、油气处理单元构成,平板式氙灯老化箱底端设置了一个输油管路通入孔和一个排气管路通出孔,油压控制单元用于向测试杯充入预定压力油料,卸放超压油料,油气处理单元用于排除测试杯中的空气或油气。该方法将充满油料、安装好测试部件的测试杯置于平板式氙灯老化箱中,根据软体储油罐实际使用地域的气候条件,经过一定时间加速老化后,检测试样性能变化情况,对软体储油罐使用寿命进行预测。本发明具有预测结果置信度高,应用范围广,测试安全等优点。(The invention discloses a device and a method for predicting the service life of a soft oil storage tank, wherein the device consists of a flat xenon lamp aging box, a test cup, a sample, an oil pressure control unit, an oil pipeline, an exhaust pipeline and an oil-gas processing unit, wherein the bottom end of the flat xenon lamp aging box is provided with an oil pipeline inlet hole and an exhaust pipeline outlet hole, the oil pressure control unit is used for filling oil with preset pressure into the test cup and discharging overpressure oil, and the oil-gas processing unit is used for exhausting air or oil gas in the test cup. The method comprises the steps of placing a testing cup filled with oil and provided with a testing part in a flat xenon lamp aging box, detecting the performance change condition of a sample after accelerated aging for a certain time according to the climate condition of the actual use region of the soft oil storage tank, and predicting the service life of the soft oil storage tank. The invention has the advantages of high confidence coefficient of the prediction result, wide application range, safe test and the like.)

1. The utility model provides a software oil storage tank life prediction device which characterized in that: the device comprises a flat xenon lamp aging box, a test cup, a sample, an oil pressure control unit, an oil pipeline, an exhaust pipeline and an oil gas processing unit, wherein the bottom end of the flat xenon lamp aging box is provided with an oil pipeline access hole and an exhaust pipeline access hole, and the top of the box body is provided with an overpressure oil gas discharge hole; the test cup includes cup, sample fastener, silk screen panel and blast pipe, and test cup one side is provided with defeated oil pipe way interface, and the inside blast pipe that is provided with of opposite side, the fixed sample of sample fastener for the top, sample outside and atmosphere contact, inside and test oil contact.

2. The software reservoir life prediction device of claim 1, wherein: the test cup sample fastener is in a bolt-nut flange connection or screw cap structure, the wire mesh cover is made of stainless steel, and the aperture is not smaller than 5 mm.

3. The software reservoir life prediction device of claim 1, wherein: the test cup is an open structure with a certain depth.

4. The software reservoir life prediction device of claim 1, wherein: the side bottom of test cup is provided with defeated oil pipe way interface and exhaust pipe way interface, is used for connecting defeated oil pipe way and exhaust pipe respectively, and the side top is provided with the blast pipe, and the blast pipe is the hollow tube, and the top of blast pipe is not more than 1mm apart from the interval of sample, and the bottom communicates with the blast pipe interface of cup.

5. The software reservoir life prediction device of claim 1, wherein: the test sample is a simulated test part of the soft oil storage tank, is a tank wall coating fabric of the soft oil storage tank, a tank wall coating fabric containing a seam or an assembly of a metal installation part on the tank and the tank body coating fabric, is fastened at the top end of the test cup, and ensures the air circulation of a test part.

6. The software reservoir life prediction device of claim 1, wherein: the oil pipeline is connected with the testing cup and the oil pressure control unit through the oil pipeline access hole, and the oil pressure in the testing cup is controlled through the oil pressure control unit.

7. The software reservoir life prediction device of claim 1, wherein: the exhaust pipeline is connected with the test cup and the oil gas processing unit through an exhaust pipeline through hole and used for exhausting air in the test cup, meanwhile, the exhaust pipeline is used for standby pressure relief under overpressure of the test cup, and when the oil pressure control unit goes wrong, the exhaust pipeline valve can be directly opened to release overpressure oil gas in the test cup.

8. The software reservoir life prediction device of claim 1, wherein: the oil pressure control unit comprises an oil tank, an oil return valve, an oil pump, an oil pipeline valve, an oil pressure gauge and a meter front valve, all components are sequentially connected according to the sequence, the oil pressure control unit is used for filling oil with preset pressure into the test cup and discharging overpressure oil, one end of the oil pipeline extends into the oil tank, and the other end of the oil pipeline is tightly connected with an oil pipeline connector.

9. The device for predicting the service life of the software oil storage tank as claimed in claim 1, wherein the oil and gas processing unit comprises an exhaust pipeline valve, an exhaust pipe, an oil collecting pipe and an oil collecting bottle, all the components are connected in sequence according to the sequence, and the oil and gas processing unit is used for exhausting air or oil and gas in the test cup and is connected with the test cup through the exhaust pipeline.

10. A method for predicting the useful life of a soft body storage tank using the device of claim 1, comprising the steps of: installing a part to be tested of the soft oil storage tank at the top end of the testing cup, filling oil to be tested into the cup, placing the testing cup filled with the oil and provided with the testing part into the flat xenon lamp aging box, adjusting the pressure of the oil in the cup to enable the testing part to achieve the use characteristics similar to those of the physical soft oil storage tank, applying illumination and spraying environmental factors to a sample according to the climate conditions of the actual use region of the soft oil storage tank, and simulating the actual influence condition of the external factors of a preset region on the physical soft oil storage tank; after a certain time of accelerated aging, detecting the related performance change condition of the sample, recording the corresponding test time T when the service life critical value of the soft oil storage tank is reached, and calculating the service time KT of the real soft oil storage tank in a preset region according to an acceleration factor K between the preset region and xenon lamp aging.

Technical Field

The invention belongs to a device and a method for predicting the service life of a nonmetal liquid storage container, and particularly relates to a device and a method for predicting the service life of a soft oil storage tank.

Background

The soft oil storage tank is mostly used for temporarily storing oil outdoors. The soft oil storage tank is formed by bonding thin-wall oil-resistant coated fabrics, and is easy to age prematurely under the action of multiple factors such as sunlight, internal oil storage, external environment and the like, so that oil leakage, breakage and other accidents occur in the use process of the soft oil storage tank. In order to ensure that the soft oil storage tank normally stores oil, the service life of the soft oil storage tank needs to be predicted.

The service life prediction of the soft oil storage tank follows a time-temperature equivalent principle, the laboratory carries out accelerated aging on the sample under the condition of simulating actual use, meanwhile, the laboratory carries out natural use aging outdoors, the corresponding relation between the sample and the sample is searched through performance comparison, and the natural aging service life is extrapolated according to the accelerated aging result of the laboratory. The setting of the laboratory simulation conditions is therefore a key factor in the confidence level of the test results.

The laboratory simulation in the existing method for predicting the service life of the soft oil storage tank mainly adopts the following modes: the first method is to use a rotary or flat xenon lamp aging box to accelerate aging of oil-soaked samples in a laboratory, and extrapolate the service life of the similar soft oil storage tank according to the test result. The test process is greatly different from the actual use state of the soft oil storage tank, the inner wall of the tank is filled with oil, the outer wall of the tank is irradiated with light during actual use, the oil continuously diffuses to the outer wall through the tank wall under the oil pressure in the tank, so that the outer wall of the tank is always in the oil erosion, and the outer wall in the state is quickly evaporated by the light although being immersed with the oil, so that the difference between the prediction result of the method and the actual service life is large; the second method is to place the scaled soft oil storage tank sample in a flat xenon lamp aging box, and because the sample is small, the appearance is cylindrical after being pressurized, the part with the strongest illumination on the top is linear, and the difference between the position and the plane shape of the top when the soft oil storage tank is actually used is larger, the prediction result has larger error, and the reference value of the method is also lower.

Disclosure of Invention

In order to make up the defects of the prior art, particularly to conveniently perform optimized selection of materials, processes and the like before the soft oil storage tank is manufactured, the invention provides a device for predicting the service life of the soft oil storage tank.

The device comprises a flat xenon lamp aging box, a test cup, a test sample, an oil pressure control unit, an oil pipeline, an exhaust pipeline and an oil gas processing unit. The bottom end of the flat xenon lamp aging box is provided with an oil pipeline inlet hole and an exhaust pipeline outlet hole, and the top of the box is provided with an overpressure oil gas discharge hole. The testing cup comprises a cup body, a sample fastener, a wire mesh cover and an exhaust pipe, wherein the cup body is made of a metal structure, an oil pipeline connector is arranged on one side of the testing cup, the exhaust pipe is arranged on the other side of the testing cup, the sample is fixed on the top of the testing cup through the sample fastener, the outer part of the sample is in contact with the atmosphere, and the inner part of the sample is in contact with testing oil; the sample fastener is in a bolt-nut flange connection or screw cap structure, and preferably adopts the bolt-nut flange connection; the wire mesh cover is made of stainless steel and has a pore diameter not smaller than 5 mm. The test cup is used for fixing a test sample and filled with test oil.

The oil pipeline is connected with the testing cup and the oil pressure control unit through the oil pipeline access hole, and the oil pressure in the testing cup is controlled through the oil pressure control unit. The exhaust pipeline is connected with the test cup and the oil gas processing unit through an exhaust pipeline through hole and used for exhausting air in the test cup, meanwhile, the exhaust pipeline is used for standby pressure relief under overpressure of the test cup, and when the oil pressure control unit has a problem, the exhaust pipeline valve can be directly opened to release overpressure oil gas in the test cup.

The testing cup is of an open structure with a certain depth, a sample is fixed at the top end of the cup body through a threaded cover or a flange connection, an oil pipeline interface and an exhaust pipeline interface are arranged at the bottom of the side face of the testing cup and are respectively used for connecting an oil pipeline and an exhaust pipeline, an exhaust pipe is arranged at the top of the side face of the testing cup and is a hollow pipe, the distance between the top of the exhaust pipe and the sample is not more than 1mm, and the bottom of the exhaust pipe is communicated with the exhaust pipe interface of the cup body, so that air. The test sample is a simulated test part of the soft oil storage tank, can be a tank wall coating fabric of the soft oil storage tank, a tank wall coating fabric containing a seam or a combination of a metal installation part on the tank and a tank body coating fabric, preferably selects the tank wall coating fabric containing the seam, is fastened at the top end of the test cup, ensures the air circulation of a test part, and is buckled and pressed by a wire mesh according to the situation in order to prevent the excessive deformation of the test sample under overpressure from being inconsistent with the actual use state of the soft oil storage tank.

The oil pressure control unit comprises an oil tank, an oil return valve, an oil pump, an oil pipeline valve, an oil pressure gauge and a meter front valve, all components are sequentially connected according to the sequence, the oil pressure control unit is used for filling oil with preset pressure into the test cup and discharging overpressure oil, one end of the oil pipeline extends into the oil tank, and the other end of the oil pipeline is tightly connected with an oil pipeline connector. The oil gas processing unit comprises an exhaust pipeline valve, an exhaust pipe, an oil accumulating pipe and an oil accumulating bottle, all components of the oil gas processing unit are sequentially connected according to the sequence, and the oil gas processing unit is used for exhausting air or oil gas in the test cup and is connected with the test cup through the exhaust pipeline. The oil gas is mainly a mixed gas of original air and charged oil in the empty test cup when the empty test cup is filled with oil, and the oil gas is discharged into the air after the oil is removed by deposition.

The invention also provides a method for predicting the service life of the soft oil storage tank by using the device for predicting the service life of the soft oil storage tank, which comprises the following steps: installing a part to be tested of the soft oil storage tank at the top end of the testing cup, filling oil to be tested into the cup, placing the testing cup filled with the oil and provided with the testing part into the flat xenon lamp aging box, adjusting the pressure of the oil in the cup to enable the testing part to achieve the use characteristics similar to those of the physical soft oil storage tank, applying illumination and spraying environmental factors to a sample according to the climate conditions of the actual use region of the soft oil storage tank, and simulating the actual influence condition of the external factors of a preset region on the physical soft oil storage tank; after a certain time of accelerated aging, detecting the related performance change condition of the sample, recording the corresponding test time T when the service life critical value of the soft oil storage tank is reached, and calculating the service time KT of the real soft oil storage tank in a preset region according to an acceleration factor K between the preset region and xenon lamp aging.

And judging the service life of the real object software oil storage tank corresponding to the sample under the natural condition according to the specific relation between the xenon lamp aging test value and the natural aging actual value. The parts to be tested of the soft oil storage tank are a tank wall sample, a tank body seam sample or a tank mounting part sample.

Compared with the prior art, the device has the advantages that:

1. after the device is adopted, the actual use state of the soft oil storage tank is simulated to the maximum extent, namely the outer wall of the tank body bears the influences of sunshine, rain, moisture and the like, and the inner wall bears the influences of oil, liquid internal pressure and the like, so that the confidence coefficient of a prediction result is higher;

2. after the device is adopted, different parameters can be set according to different conditions of the soft oil storage tank, for example, different liquid internal pressures can be applied to the test cup according to different tank wall tensions of the soft oil storage tanks with different volumes, so that the same device can be used for accelerated aging tests of the soft oil storage tanks with different volumes;

3. the sample can be a tank body, a joint or a tank mounting piece, so that the application range of the same device is wider;

4. the device can control and discharge the oil pressure in the test cup, so that the test of flammable and corrosive liquid at high temperature is safer.

Drawings

FIG. 1 is a schematic diagram of the device for predicting the service life of a soft oil storage tank.

In the figure, 1 is an oil tank, 2 is an oil return valve, 3 is an oil pump, 4 is an oil pipeline valve, 5 is an oil pressure gauge, 6 is a front valve, 7 is an oil pipeline, 8 is a test cup, 9 is oil, 10 is a sample fastener, 11 is a sample, 12 is a screen cover, 13 is a xenon lamp, 14 is a xenon lamp aging box, 15 is an exhaust pipe, 16 is an exhaust pipe, 17 is an exhaust pipeline valve, 18 is an exhaust pipe, 19 is an oil accumulation pipe, 20 is an oil accumulation bottle, 21 is a test cup support, I1 is an oil pressure control unit, and I2 is an oil gas processing unit.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION