A device and method for testing the deformation of a corrugated steel liner of a gas storage system

Abstract

The application provides a deformation test device and method for a wave-shaped arch steel lining of a gas storage system, and the deformation test device comprises a box body, a first filler, a distance meter, a wave-shaped arch steel lining sample plate, a second filler, a cover plate and a pressurizing device; the bottom of the box body is filled with the first filler with a preset first height, the upper surface of the first filler is provided with a groove, the middle part of the groove is provided with a container with an upward opening, and the bottom end of the container is located in the interior of the first filler; the distance meter is arranged in the container and connected with equipment arranged outside the box body; the wave-shaped arch steel lining sample plate comprises at least one wave-shaped arch, is attached to the top of the first filler, and the wave-shaped arch is located above the container. The application can measure the deformation of the wave-shaped arch steel lining.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to a deformation test device and method of a wave-shaped arch steel lining of a gas storage system. BACKGROUND

[0002] Large-scale energy storage technology is a key technology to solve the problem of abandoned wind and light, significantly improve the level of renewable energy consumption, promote the replacement of main energy from fossil energy to renewable energy, and achieve "carbon peak" and "carbon neutral". Among them, compressed air energy storage is considered as the most potential physical energy storage technology, which has the characteristics of large scale, low cost, long service life and environmental friendliness.

[0003] In the prior art, the method of setting a gas storage container in an underground cave is usually used to realize compressed air energy storage, which mainly relies on the tensile strength of the steel lining of the gas storage container to bear the high pressure of the stored gas. In order to transfer the gas pressure to the surrounding rock outside the steel lining, a wave-shaped arch is set on the steel lining, so that the internal gas pressure can be transferred to the surrounding rock outside the steel lining by the elastic deformation of the wave-shaped arch. In addition, in order to verify the working mechanism of the steel lining, various tests of the steel lining are usually required.

[0004] Since most of the existing energy storage systems still use flat steel plates as steel linings, the tensile strength of the steel lining is used to bear the high pressure of the stored gas. Therefore, through the existing scale test, the stress, strain, deformation and other indicators of the steel plate of the steel lining can be directly observed. However, if a wave-shaped arch is set on the steel lining, and the existing scale test is still used, on the one hand, the size of the wave-shaped arch will become very small, and the steel plate will be very thin, making it difficult to meet the processing precision requirements, and stress concentration is easy to occur, causing local damage or instability of the wave-shaped arch. On the other hand, considering that the concrete lining and surrounding rock will bear most of the pressure after the wave-shaped arch is set, the concrete lining and surrounding rock outside the steel lining need to be simulated during the test. However, the existing test device cannot simulate the concrete lining and surrounding rock. Therefore, the existing test device and test method cannot obtain the deformation amount and deformation process of the wave-shaped arch of the wave-shaped arch steel lining. In order to accurately simulate the deformation shape and failure mechanism of the wave-shaped arch in actual engineering and provide suggestions for the selection of engineering design parameters, a test device that meets the full-scale test requirements and can accurately measure and observe the working process of the wave-shaped arch is needed. The present application is proposed to meet this requirement. SUMMARY

[0005] Therefore, the present application provides a deformation test device and method of a wave-shaped arch steel lining of a gas storage system, so that the deformation amount of the wave-shaped arch steel lining can be measured.

[0006] The technical scheme of the present application is implemented as follows:

[0007] A deformation test device for a wave-shaped arch steel lining of a gas storage system, comprising a box, a first filler, a distance meter, a wave-shaped arch steel lining sample plate, a second filler, a cover plate and a pressurizing device.

[0008] The bottom of the box is filled with the first filler with a preset first height, the upper surface of the first filler is provided with a groove, the middle part of the groove is provided with a container with an upward opening, and the bottom end of the container is inside the first filler; the distance meter is arranged in the container and connected with a device arranged outside the box.

[0009] The wave-shaped arch steel lining sample plate comprises at least one wave-shaped arch and is arranged on the top of the first filler with the wave-shaped arch above the container.

[0010] The box above the wave-shaped arch steel lining sample plate is filled with the second filler with a preset second height; the cover plate is arranged on the top of the second filler, and the pressurizing device is above the cover plate.

[0011] Preferably, the distance meter is connected with the device arranged outside the box, for transmitting the deformation amount of the wave-shaped arch steel lining sample plate monitored to the device arranged outside the box for analysis.

[0012] Preferably, a plurality of transverse stiffening ribs and longitudinal stiffening ribs are arranged on the outer side of the box.

[0013] Preferably, a through hole is arranged on each of the two side walls of the box corresponding to the two ends of the groove.

[0014] Preferably, a gap with a width of S is reserved between the end of the wave-shaped arch steel lining sample plate and the inner side wall of the box.

[0015] Preferably, a baffle is arranged between the upper surface of the wave-shaped arch steel lining sample plate and the second filler.

[0016] Preferably, the container is a vertical downward steel pipe, and the bottom end of the steel pipe is inside the first filler.

[0017] Preferably, the first filler is a cast concrete body, and the second filler is fine sand.

[0018] Preferably, the upper surface of the first filler is an arc surface matched with the arc of the wave-shaped arch steel lining sample plate.

[0019] A deformation test method for a wave-shaped arch steel lining of a gas storage system, comprising the following steps:

[0020] Step A, prepare the box, and fix the transverse stiffening ribs and longitudinal stiffening ribs outside the box;

[0021] Step B, fill the first filler in the box, open a groove on the upper surface of the first filler, pre-bury a container in the middle of the groove, open a through hole on the side wall of the box corresponding to the two ends of the groove, place the distance meter in the container, lead the connecting line of the distance meter out of the box through the groove and the through hole, and connect it with the device arranged outside the box;

[0022] Step C, place the corrugated arch steel lining template on the upper surface of the first filler, set the blocking bar on the upper surface around the corrugated arch steel lining template, fill the second filler above the corrugated arch steel lining template, cover the cover plate, and pressurize the cover plate by using the pressurizing device;

[0023] Step D, obtain the deformation data of the corrugated arch steel lining template sent by the distance meter from the device arranged outside the box, and observe the deformation process of the corrugated arch steel lining template through the through hole. For more detailed observation of the local deformation form of the corrugated arch, an industrial endoscope camera can be used to observe from any position in the groove through the through hole.

[0024] As can be seen from the above, in the deformation test device and method of the corrugated arch steel lining in the present application, the first filler is used to simulate the concrete lining and surrounding rock, and the distance meter is connected with the device arranged outside the box, so that the deformation of the corrugated arch steel lining can be measured. Further, through the through hole, the deformation process of the corrugated arch steel lining can also be observed. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 It is a sectional view of the deformation test device of the corrugated arch steel lining of the gas storage system in the embodiment of the present application.

[0026] Figure 2 It is a top view of the deformation test device of the corrugated arch steel lining of the gas storage system in the embodiment of the present application.

[0027] Figure 3 It is a front view of the deformation test device of the corrugated arch steel lining of the gas storage system in the embodiment of the present application.

[0028] Figure 4 It is Figure 1 It is a local enlarged view of A in the figure. DETAILED DESCRIPTION

[0029] In order to make the technical solutions and advantages of the present application clearer and more apparent, the present application will be further described in detail below in combination with the drawings and specific embodiments.

[0030] As Figures 1 to 4As shown, the present application provides a deformation test device for a corrugated arch steel lining of a gas storage system, comprising: a box 1, a first filler 4, a distance meter 7, a corrugated arch steel lining sample plate 8, a second filler 10, a cover plate 11 and a pressurizing device 12;

[0031] The bottom of the box 1 is filled with the first filler 4 with a preset first height, for simulating concrete lining and surrounding rock;

[0032] The upper surface of the first filler 4 is provided with a groove 5, the middle part of the groove 5 is provided with a container 6 with an upward opening, the bottom end of the container 6 is inside the first filler 4; the distance meter 7 is arranged in the container 6 and connected with the equipment arranged outside the box;

[0033] The corrugated arch steel lining sample plate 8 comprises at least one corrugated arch 81 and is arranged on the top of the first filler 4, and the corrugated arch 81 is above the container 6;

[0034] The box above the corrugated arch steel lining sample plate 8 is filled with the second filler 10 with a preset second height;

[0035] The cover plate 11 is arranged on the top of the second filler 10, and the pressurizing device 12 is above the cover plate 11 for pressurizing the cover plate 11.

[0036] In the technical scheme of the present application, the first filler 4 is used to simulate concrete lining and surrounding rock, and the pressurizing device 12, the cover plate 11 and the second filler 10 are used to simulate the gas pressure inside the corrugated arch steel lining, wherein the pressure distribution can be more uniform by arranging the cover plate 11 and the second filler 10, which is more in line with the characteristics of the gas pressure. When the pressurizing device is pressurized, the corrugated arch steel lining sample plate 8 deforms under the action of the pressure, so that the deformation amount of the corrugated arch steel lining sample plate 8 can be monitored and obtained in real time by the distance meter 7 arranged in the container 6, and the deformation amount data is sent to the equipment arranged outside the box for analysis. Further, the relationship among the loading pressure, the deformation amount and the time can be obtained by the equipment arranged outside the box, which is convenient for researching the working mechanism and the failure mechanism of the corrugated arch steel lining, and provides a basis for the design parameters of the initial system of the corrugated arch steel lining. By arranging the groove and the container, the distance meter 7 is arranged in the container, so that the influence of the distance meter 7 on the deformation of the corrugated arch steel lining sample plate 8 can be prevented.

[0037] In the technical scheme of the present application, the deformation test device for the corrugated arch steel lining of the gas storage system can be realized by using various implementation methods. One of the implementation methods will be taken as an example to introduce the technical scheme of the present application in detail.

[0038] For example, preferably, in a specific embodiment of the present application, the distance meter 7 can be connected with the device arranged outside the box for transmitting the monitored deformation of the corrugated steel lining template 8 to the device arranged outside the box for analysis.

[0039] For another example, preferably, in a specific embodiment of the present application, as shown in Figure 2 and Figure 3 Preferably, in a specific embodiment of the present application, the outer side of the box 1 can be respectively fixed with a plurality of transverse stiffening ribs 2 and longitudinal stiffening ribs 3 arranged in cross, for strengthening the strength of the box and preventing the pressurizing device 12 from damaging the box when pressurizing.

[0040] In addition, as an example, in a preferred specific embodiment of the present application, the first filler 4 can be a cast concrete body, and the second filler 10 can be fine sand.

[0041] Preferably, in a specific embodiment of the present application, the upper surface of the first filler 4 is an arc surface matching the curvature of the corrugated steel lining template 8, so that the corrugated steel lining template 8 can better fit the upper surface of the first filler 4.

[0042] In addition, as an example, in a preferred specific embodiment of the present application, as shown in Figure 3 two end walls of the box correspondingly arranged with a through hole 13.

[0043] In the technical scheme of the present application, the connecting line of the distance meter 7 can be sequentially extended from the groove 5 to the through hole 13 and led out from the through hole 13 to the outside of the box for connection with the device arranged outside the box. Since the groove is arranged, the connecting line is placed in the groove, which can prevent the connecting line from affecting the deformation of the corrugated steel lining template 8. In addition, a small amount of fine sand inevitably falling on the upper surface of the concrete body can be cleaned out of the box through the groove 5 and the through hole 13, thereby preventing the fine sand falling on the upper surface of the concrete body from affecting the deformation of the corrugated steel lining template 8. In addition, the deformation process of the corrugated steel lining template 8 inside the box can be observed or recorded through the through hole 13. For more detailed observation of the local deformation of the corrugated arch, an industrial endoscope camera can be used to observe from the through hole into the groove to any position.

[0044] In addition, as an example, in a preferred specific embodiment of the present application, as shown in Figure 4 the gap with a width S is reserved between the end of the corrugated steel lining template 8 and the inner side wall of the box 1, which can prevent the inner side wall of the box from hindering the deformation of the corrugated steel lining template 8 during the deformation test of the corrugated steel lining template 8.

[0045] Preferably, as an example, the width S of the gap can be determined according to the arc length of the corrugated arch steel lining template 8 before and after the corrugated arch 81 is stretched. For example, the width S of the gap can be determined as half of the difference between the arc length of the corrugated arch steel lining template 8 when the corrugated arch 81 is stretched to fit the curvature of the corrugated arch steel lining template 8 and the arc length of the corrugated arch steel lining template 8 before the corrugated arch 81 is stretched.

[0046] In addition, as an example, in a preferred embodiment of the present application, as shown in Figure 4 Preferably, as an example, the width S of the gap can be determined according to the arc length of the corrugated arch steel lining template 8 before and after the corrugated arch 81 is stretched. For example, the width S of the gap can be determined as half of the difference between the arc length of the corrugated arch steel lining template 8 when the corrugated arch 81 is stretched to fit the curvature of the corrugated arch steel lining template 8 and the arc length of the corrugated arch steel lining template 8 before the corrugated arch 81 is stretched.

[0047] Preferably, as an example, the width S of the gap can be determined according to the arc length of the corrugated arch steel lining template 8 before and after the corrugated arch 81 is stretched. For example, the width S of the gap can be determined as half of the difference between the arc length of the corrugated arch steel lining template 8 when the corrugated arch 81 is stretched to fit the curvature of the corrugated arch steel lining template 8 and the arc length of the corrugated arch steel lining template 8 before the corrugated arch 81 is stretched.

[0048] In addition, as an example, in a preferred embodiment of the present application, the pressurizing device 12 can be a jack with a steel plate fixed at the bottom, the planar size of the steel plate should be smaller than the planar size of the cover plate 11, and the side length of the steel plate should be greater than 2 / 3 of the side length of the cover plate 11. By setting the steel plate, the pressure applied by the jack can be dispersed, so that the cover plate 11 is more evenly stressed.

[0049] In addition, as an example, in a preferred embodiment of the present application, the container 6 can be a vertical downward steel pipe, and the bottom end of the steel pipe is inside the first filler 4.

[0050] In addition, as an example, in a preferred embodiment of the present application, the distance measuring device 7 can be a laser distance measuring sensor.

[0051] In addition, as an example, in a preferred embodiment of the present application, the device arranged outside the box can be a computer terminal.

[0052] Preferably, as an example, as shown in Figure 1 Preferably, as an example, the length of the box 1 can be L, and the width can be d, d can be 2 / 3 of L, and d>1m.

[0053] Preferably, as an example, the thickness of the first filler 4 can be L1, and L1≥L / 2.

[0054] Preferably, as an example, as shown in Figure 1As shown, the size t3 of the cover plate from the top edge of the box can be greater than or equal to 5 cm.

[0055] In summary, in the technical scheme of the present application, the first filler 4 is used to simulate the concrete lining and surrounding rock, and the distance measuring device 7 is arranged to measure the deformation of the corrugated steel lining, and the deformation process of the corrugated steel lining can be observed through the through hole 13.

[0056] In addition, in another embodiment of the present application, a deformation test method for a corrugated steel lining of a gas storage system is also provided, comprising the following steps:

[0057] Step 11, preparing a box, and fixing transverse stiffening ribs and longitudinal stiffening ribs outside the box;

[0058] Step 12, filling the first filler in the box, opening a groove on the upper surface of the first filler, pre-burying a container in the middle of the groove, opening through holes on the side walls of the box corresponding to both ends of the groove, placing the distance measuring device in the container, leading the connecting line of the distance measuring device out of the box through the groove and the through holes, and connecting it with the device arranged outside the box;

[0059] Step 13, placing a corrugated steel lining sample plate on the upper surface of the first filler, arranging a baffle on the upper surface around the corrugated steel lining sample plate, filling the second filler above the corrugated steel lining sample plate, covering the cover plate, and pressurizing the cover plate by using a pressurizing device;

[0060] Step 14, obtaining the deformation data of the corrugated steel lining sample plate sent by the distance measuring device from the device arranged outside the box, and observing the deformation process of the corrugated steel lining sample plate through the through hole.

[0061] In summary, in the technical scheme of the present application, through the above test method, the deformation data can be sent to the device arranged outside the box by the distance measuring device, so that the deformation of the corrugated steel lining can be obtained, and the deformation process of the corrugated steel lining can also be observed through the through hole.

[0062] The above only describes the preferred embodiments of the present application, and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A deformation testing device for a corrugated arch steel lining of a gas storage system, characterized in that, include: The container, first filler, rangefinder, corrugated arch steel inner lining template, second filler, cover plate, and pressurization device; The bottom of the box is filled with a first filler of a preset first height. The upper surface of the first filler is provided with a groove. A container with an upward opening is provided in the middle of the groove. The bottom of the container is inside the first filler. The rangefinder is installed inside the container and connected to a device installed outside the box. The corrugated arch steel lining template includes at least one corrugated arch and is fitted onto the top of the first filler, with the corrugated arch located above the container. The box above the corrugated arch steel lining template is filled with a second filler of a preset second height; The cover plate is fitted onto the top of the second filler, and the pressurizing device is located above the cover plate.

2. The deformation testing device for the corrugated arch steel lining of the gas storage system according to claim 1, characterized in that, The rangefinder is connected to a device located outside the enclosure to transmit the monitored deformation of the corrugated arch steel lining template to the device for analysis.

3. The deformation testing device for the corrugated arch steel lining of the gas storage system according to claim 1, characterized in that, The outer side of the box is fixed with a number of intersecting transverse stiffening ribs and longitudinal stiffening ribs.

4. The deformation testing device for the corrugated arch steel lining of the gas storage system according to claim 1, characterized in that, On the two side walls of the box corresponding to the two ends of the groove, a through hole is provided respectively.

5. The deformation testing device for the corrugated arch steel lining of the gas storage system according to claim 1, characterized in that, A gap of width S is reserved between the end of the corrugated arch steel lining template and the inner wall of the box.

6. The deformation testing device for the corrugated arch steel lining of the gas storage system according to claim 1, characterized in that, A retaining strip is provided between the upper surface of the corrugated arch steel lining template and the second filler.

7. The deformation testing device for the corrugated arch steel lining of the gas storage system according to claim 1, characterized in that, The container is a vertically oriented steel pipe, with the bottom end of the pipe inside the first filler.

8. The deformation testing device for the corrugated arch steel lining of the gas storage system according to claim 1, characterized in that, The first filler is a poured concrete body, and the second filler is fine sand.

9. The deformation testing device for the corrugated arch steel lining of the gas storage system according to claim 1, characterized in that, The upper surface of the first filler is an arc surface that matches the curvature of the corrugated arch steel lining template.

10. A deformation test method for the corrugated arch steel lining of a gas storage system using the test apparatus described in claim 1, characterized in that, Includes the following steps: Step A: Prepare the box body and fix transverse stiffening ribs and longitudinal stiffening ribs on the outside of the box body; Step B: Fill the box with the first filler, open a groove on the upper surface of the first filler, pre-embed a container in the middle of the groove, open through holes on the side walls of the box corresponding to both ends of the groove, place the rangefinder in the container, lead its connecting wire out through the groove and through holes to the outside of the box, and connect it to the equipment set outside the box. Step C: Place a corrugated arch steel lining template on the upper surface of the first filler, set baffles on the upper surface around it, fill the second filler above the corrugated arch steel lining template, cover it with a cover plate, and pressurize the cover plate using a pressurizing device. Step D: Obtain deformation data of the corrugated arch steel lining template sent by the rangefinder from the device set outside the box, and observe the deformation process of the corrugated arch steel lining template through the through hole.

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