Hydrogen storage well simulation test device and test method

Abstract

The invention discloses a hydrogen storage well simulation test device and test method, and relates to the technical field of new energy, the hydrogen storage well simulation test device comprises a box body assembly, a detection assembly and an anti-pulling test assembly, the box body assembly is provided with an accommodating cavity for accommodating simulated soil and a hydrogen storage well arranged in the accommodating cavity. The detection assembly comprises a plurality of hydrogen detectors arranged around the hydrogen storage well. The anti-pulling test assembly comprises a top plate, an anti-pulling hydraulic part and a lifting part, the top plate is used for being placed on the simulated soil of the containing cavity, the anti-pulling hydraulic part is arranged on the top plate, the two ends of the anti-pulling hydraulic part are connected with the top plate and the lifting part respectively, and the lifting part is connected with the hydrogen storage well. The multiple hydrogen detectors provided by the invention can detect the hydrogen concentration of the simulated soil around the hydrogen storage well so as to judge whether the hydrogen storage well has hydrogen leakage or not. In addition, the anti-pulling hydraulic part can drive the lifting part to ascend, and the lifting part applies pulling force to the hydrogen storage well through the pull rope so as to detect the anti-pulling force of the hydrogen storage well.

Description

Technical Field

[0001] The present invention relates to the field of new energy technology, and in particular to a hydrogen storage well simulation test device and a test method. Background Art

[0002] As an important part of the future energy system, hydrogen energy has broad development prospects. Underground high-pressure hydrogen storage wells have the advantages of "safe storage, flexible layout, controllable cost, and high storage limit". They can be used for large-scale underground hydrogen storage at hydrogen storage station mother stations or small-scale storage at substations, providing an ideal place for hydrogen storage and transportation. However, due to the small molecules, high activity, and high permeability of hydrogen, hydrogen corrosion and hydrogen embrittlement may occur in the wellbore of the hydrogen storage well, leading to gas leakage in the hydrogen storage well, causing explosion risks or affecting the normal operation of the gas storage well. And as the service life of the hydrogen storage well increases, the wellbore of the hydrogen storage well is affected by factors such as oxygen, moisture, and pH in the soil, and the wellbore of the hydrogen storage well gradually corrodes, resulting in a decrease in the bonding strength between the hydrogen storage well and the cement ring. Under the condition of circulating high-pressure hydrogen, the wellbore of the hydrogen storage well is very prone to well channeling accidents, causing serious safety accidents.

[0003] In view of this, it is necessary to invent a hydrogen storage well simulation test device to detect the sealing and pull-out resistance of the hydrogen storage well, and provide a scientific basis for the feasibility evaluation of the hydrogen storage well and the formulation of injection and production operation parameters. Summary of the invention

[0004] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, propose a hydrogen storage well simulation test device and test method, solve the technical problem that the hydrogen storage well simulation test device in the prior art cannot detect the sealing and pull-out resistance of the hydrogen storage well, and provide a scientific basis for the feasibility evaluation of the hydrogen storage well and the formulation of injection and production operation parameters.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: In a first aspect, the present invention provides a hydrogen storage well simulation test device, comprising: The box assembly comprises a box, a hydrogen storage well and a hydrogen storage cylinder. The box is provided with a containing cavity for containing simulated soil, the hydrogen storage well is located in the containing cavity, and the hydrogen storage cylinder is located in the hydrogen storage well.

[0006] A detection assembly, comprising a plurality of hydrogen detectors arranged around the circumference of the hydrogen storage well; and The pull-out test assembly comprises a top plate, a pull-out hydraulic component and a lifting component, wherein the top plate is used to be placed on the simulated soil of the accommodating cavity, the pull-out hydraulic component is arranged on the top plate and connected to the lifting component, and the lifting component is connected to the hydrogen storage cylinder.

[0007] In some embodiments, the detection assembly includes a plurality of support rings and a plurality of support columns, the plurality of support rings are spaced apart vertically, a plurality of the support columns are arranged around the circumference of the support rings, and both ends of each of the support columns are connected to the upper and lower adjacent support rings, and a plurality of the hydrogen detectors are arranged around the circumference of the support rings.

[0008] In some embodiments, the detection assembly further includes a plurality of stress strain gauges, which surround the support ring and are disposed on the corresponding support columns.

[0009] In some embodiments, the box assembly also includes a box body and a pressure-bearing mechanism, the pressure-bearing mechanism includes a first hydraulic component, a second hydraulic component, a first pressure-bearing plate and a second pressure-bearing plate, the first pressure-bearing plate and the second pressure-bearing plate are arranged on the left and right sides of the inner wall of the box body, the first hydraulic component is connected to the first pressure-bearing plate, the second hydraulic component is connected to the second pressure-bearing plate, the first pressure-bearing plate, the second pressure-bearing plate and the top plate enclose the accommodating cavity.

[0010] In some embodiments, the hydrogen storage well simulation test device also includes a hydrogen supply assembly, which includes a hydrogen cylinder, a first control valve, a first boost pump and an input pipe, both ends of the input pipe are connected to the hydrogen cylinder and the air inlet end of the hydrogen storage well, and the first control valve and the first boost pump are both arranged on the input pipe.

[0011] In some embodiments, the hydrogen supply assembly also includes an output pipe, a second control valve and a second boost pump, the two ends of the output pipe are respectively connected to the hydrogen bottle and the gas outlet end of the hydrogen storage well, and the second control valve and the second boost pump are both arranged on the output pipe.

[0012] In some embodiments, the hydrogen storage well simulation test device also includes an electrochemical corrosion component, which includes a corrosion mechanism, a water replenishment mechanism and a liquid replenishment mechanism. The corrosion mechanism includes a corrosion box, an electrode test piece, a constant potentiostat and a computer. The corrosion box is provided with a storage cavity for placing the simulated soil, and the storage cavity is also used to place the hydrogen storage cylinder. The electrode test piece is arranged in the storage cavity, the constant potentiostat is connected to the electrode test piece and the computer, and the water replenishment mechanism and the liquid replenishment mechanism are both connected to the corrosion box.

[0013] In some embodiments, the water replenishment mechanism includes a water tank, a water pipe, a water valve and a humidity detector, the water pipe connects the water tank and the storage chamber, the water valve is arranged on the water pipe, and the humidity detector is arranged in the storage chamber and connected to the water valve.

[0014] In some embodiments, the fluid replenishment mechanism includes a PH solution box, a PH tube, a PH valve and a PH detector, the PH tube connects the PH box and the storage cavity, the PH valve is arranged on the PH tube, and the PH detector is arranged in the storage cavity and connected to the PH valve.

[0015] In a second aspect, the present invention further provides a test method, which is implemented using the above-mentioned hydrogen storage well simulation test device, and the test method comprises the following steps: According to different test requirements, boxes of different specifications and sizes are made, hydraulic parts and pressure plates are installed on the side walls around the box, and the accommodating cavity is filled with a simulated soil layer made according to the physical parameters of the actual soil layer. According to the confining pressure measured at the location of the hydrogen storage well project, the pressure of the hydraulic parts is adjusted to drive the pressure plate to squeeze the simulated soil layer to simulate the confining pressure; A corrosion box is made according to the test requirements, and the corrosive soil at the location of the hydrogen storage well project is filled in it. A reference electrode, an auxiliary electrode and a hydrogen storage cylinder are set in it and connected to a constant potential instrument. A water replenishment mechanism and a liquid replenishment mechanism are installed on both sides of the corrosion box and connected to the corrosion box through a soft water pipe; A hydrogen storage well hole is formed by drilling a hole in the simulated soil layer inside the box using a small drilling device, the hydrogen storage cylinder after electrochemical corrosion is sunk into the hydrogen storage well hole, and a cement ring is poured to complete the production of the hydrogen storage well simulation module; A number of hydrogen detectors and stress strain gauges are arranged in the simulated soil layer along the circumferential direction based on the center line of the hydrogen storage well, and are connected to the computer system through signal sensors to detect the hydrogen leakage of the hydrogen storage well and the change value of the surrounding rock pressure in real time; One end of the anti-pullout hydraulic component is connected to the top plate, and the other end is connected to the lifting component. The hydrogen storage cylinder is driven upward by a pull line set on the lifting component to test the vertical restraint force of the cement ring on the hydrogen storage cylinder; Install a hydrogen cylinder and connect it to the hydrogen storage cylinder through an input pipe. At the same time, a booster pump, an exhaust pump and a control valve are set on the input pipe to circulate hydrogen to or discharge hydrogen from the hydrogen storage cylinder to simulate the operation process of a hydrogen storage well; During the startup process, the hydrogen detector and stress strain gauge monitor the strain and / or surface deformation and damage of the simulated soil layer inside the box due to hydrogen filling or dehydration, and monitor the hydrogen leakage of the hydrogen storage well. The monitoring data obtained from the above monitoring are collected, recorded and analyzed.

[0016] Compared with the prior art, the hydrogen storage well simulation test device provided by the present invention has a box assembly that can use its accommodating cavity to place the simulated soil for the test, and the detection assembly has multiple hydrogen detectors arranged around the hydrogen storage well. When the hydrogen storage well is filled with simulated soil, multiple hydrogen detectors are buried in the simulated soil around the hydrogen storage well, and can detect the hydrogen concentration of the simulated soil around the hydrogen storage well to determine whether there is hydrogen leakage in the hydrogen storage well. In addition, the anti-pullout hydraulic component can drive the lifting component to rise, and the lifting component can apply tension to the hydrogen storage cylinder to detect the pullout resistance of the hydrogen storage well. The hydrogen storage well simulation test device provided by the present invention can detect the sealing and pullout resistance of the hydrogen storage well, and provide a scientific basis for the feasibility evaluation of the hydrogen storage well and the formulation of injection and production operation parameters. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the connection between the box assembly and the pull-out resistance test assembly provided by an embodiment of the present invention; Figure 2 is a three-dimensional schematic diagram of a box assembly provided by an embodiment of the present invention; Figure 3 It is a structural schematic diagram of the connection between the box assembly, the pull-out test assembly and the hydrogen supply assembly provided by an embodiment of the present invention; Figure 4 is a schematic diagram of the structure of a detection component provided by an embodiment of the present invention; Figure 5 It is a schematic diagram of the structure of the electrochemical corrosion component provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0019] In order to solve the technical problem that the hydrogen storage well simulation test device in the prior art cannot detect the sealing and pull-out resistance of the hydrogen storage well, and provide a scientific basis for the feasibility evaluation of the hydrogen storage well and the formulation of injection and production operation parameters, the present invention provides a hydrogen storage well simulation test device, which can detect the sealing and pull-out resistance of the hydrogen storage well, and provide a scientific basis for the feasibility evaluation of the hydrogen storage well and the formulation of injection and production operation parameters.

[0020] See also Figure 1 and Figure 2 , Figure 1It is a structural schematic diagram of a hydrogen storage well simulation test device in one embodiment of the present invention. The hydrogen storage well simulation test device includes a box assembly, a detection assembly and a pull-out test assembly. The box assembly includes a box 1, a hydrogen storage well 2 and a hydrogen storage cylinder 3. A receiving chamber 11 for accommodating simulated soil is provided in the box 1. The hydrogen storage well 2 is located in the receiving chamber 11 and is covered by the simulated soil in the receiving chamber 11. The hydrogen storage cylinder 3 is located in the hydrogen storage well 2. The hydrogen storage cylinder 3 can be connected to a hydrogen source. The hydrogen source inputs a certain amount of hydrogen into the hydrogen storage cylinder 3, and the hydrogen storage cylinder 3 can store a certain amount of hydrogen. The hydrogen storage well 2 of this embodiment is cylindrical. A cement ring 7 is cast on the inner wall of the hydrogen storage well 2. The hydrogen storage cylinder 3 is attached to the cement ring 7 or it can be understood that the cement ring 7 is covered on the hydrogen storage cylinder 3, so that the hydrogen storage cylinder 3 is stably fixed to the hydrogen storage well 2.

[0021] The detection assembly includes a plurality of hydrogen detectors 11 ( Figure 4 As shown), multiple hydrogen detectors 11 are arranged around the circumference of the hydrogen storage well 2. Each hydrogen detector 11 can detect the hydrogen concentration at the simulated soil location. The hydrogen detector 11 is also connected to the computer 63 and can transmit the detected hydrogen concentration parameters to the computer 63 for reference by the staff.

[0022] The pull-out test assembly includes a top plate 41, a pull-out hydraulic component 42 and a lifting component 43. The top plate 41 is used to be placed on the simulated soil 9 of the accommodating chamber 11. The pull-out hydraulic component 42 is arranged on the top plate 41. The two ends of the pull-out hydraulic component 42 are respectively connected to the top plate 41 and the lifting component 43. The lifting component 43 is connected to the hydrogen storage cylinder 3. The pull-out hydraulic component 42 can drive the lifting component 43 to rise when working, so as to drive the hydrogen storage cylinder 3 to rise through the lifting component 43. The hydrogen storage cylinder 3 is connected to the inner wall of the cement ring 7. A tension sensor and a pull rope 44 can be arranged on the lifting component 43. One end of the pull rope 44 is connected to the tension sensor, and the other end is connected to the hydrogen storage cylinder 3. During the rising process, the lifting component 43 pulls the hydrogen storage cylinder 3 through the pull rope 44 to drive the hydrogen storage cylinder 3 until it is separated from the cement ring 7. The pull-out force of the hydrogen storage well 2 can be known by observing the parameters of the tension sensor.

[0023] In one embodiment, see Figure 4 The detection component includes multiple support rings 12 and multiple support columns 13. The multiple support rings 12 are spaced apart up and down. The multiple support columns 13 are arranged around the circumference of the support ring 2, and the two ends of each support column 13 are connected to the upper and lower adjacent support rings 12. Multiple hydrogen detectors 11 are arranged around the circumference of the support ring 12. Figure 5 There are four support rings 12 in the embodiment shown, and the four support rings 12 are arranged at intervals in the upper and lower parts. The distance between two adjacent support rings 12 can be set according to the height of the hydrogen storage well 2, and the four support rings 12 only need to cover the height of the hydrogen storage well 2. In other embodiments, the number of support rings 12 can also be other numbers, such as three, five, or more than five.

[0024] In one embodiment, see Figure 4 The detection assembly further includes a plurality of stress strain gauges 14 , which surround the support ring 12 and are disposed on corresponding support columns 13 . Figure 5 In the embodiment shown, each layer has eight support columns 13, each support column 13 is provided with a stress strain gauge 14, and each layer is provided with eight stress strain gauges 14. This embodiment has three layers in total, with a total of twenty-four stress strain gauges 14. Since the multiple support columns 13 of each layer are evenly arranged around the support ring 12, the multiple stress strain gauges 14 are also evenly arranged, which can evenly detect the stress changes of the test soil around the hydrogen storage well 2, thereby determining whether the hydrogen storage well 2 has a risk of hydrogen leakage.

[0025] In one embodiment, see Figure 1 The box assembly also includes a pressure-bearing mechanism, which includes a first hydraulic component 15, a second hydraulic component 16, a first pressure-bearing plate 17 and a second pressure-bearing plate 18. The first pressure-bearing plate 17 and the second pressure-bearing plate 18 are arranged on the left and right sides of the inner wall of the box 1. The first hydraulic component 15 is connected to the first pressure-bearing plate 17, and the second hydraulic component 16 is connected to the second pressure-bearing plate 18. The first pressure-bearing plate 17, the second pressure-bearing plate 18 and the top plate 41 enclose the above-mentioned accommodating chamber 11. In this embodiment, one end of the first pressure-bearing plate 17 and the second pressure-bearing plate 18 are both slidably connected to the top plate 41, and the other end is both slidably connected to the bottom of the box 1. The first hydraulic component 15 and the second hydraulic component 16 are respectively arranged on opposite sides of the box 1. The first hydraulic component 15 can drive the first pressure-bearing plate 17 to slide back and forth when working to push the simulated soil in the accommodating chamber 11. The second hydraulic component 16 can drive the second pressure-bearing plate 18 to slide back and forth when working to push the simulated soil in the accommodating chamber 11. Therefore, the first hydraulic component 15 and the second hydraulic component 16 can be controlled to drive the first pressure plate 17 and the second pressure plate 18 to slide closer or farther, so as to control the tightness and density of the simulated soil to meet different test requirements.

[0026] In one embodiment, see Figure 3 The hydrogen storage well simulation test device also includes a hydrogen supply assembly, which includes a hydrogen bottle 51, a first control valve 52, a first booster pump 53 and an input pipe 54. The two ends of the input pipe 54 are connected to the hydrogen bottle 51 and the air inlet end of the hydrogen storage well 2. The first control valve 52 and the first booster pump 53 are both arranged on the input pipe 54. In this embodiment, the hydrogen bottle 51 can store a certain amount of hydrogen in advance for test needs. The first control valve 52 can be opened or closed. When opened, the hydrogen in the hydrogen bottle 51 can enter the hydrogen storage cylinder 3. The first booster pump 53 is used to pressurize the input pipe 54 to drive the hydrogen in the hydrogen bottle 51 to quickly enter the hydrogen storage cylinder 3.

[0027] In one embodiment, see Figure 3 The hydrogen supply assembly also includes an output pipe 55, a second control valve 56 and a second booster pump 57. The two ends of the output pipe 55 are respectively connected to the hydrogen bottle 51 and the gas outlet of the hydrogen storage well 2. The second control valve 56 and the second booster pump 57 are both arranged on the output pipe 55. In this embodiment, the second control valve 56 can be opened or closed. When opened, the hydrogen in the hydrogen storage cylinder 3 can be output to the hydrogen bottle 51 through the output pipe 55, and the hydrogen can be released to the hydrogen storage cylinder 3, so as to adjust the hydrogen concentration of the hydrogen storage cylinder 3 to meet different test needs. The second booster pump 57 can pressurize the output pipe 55 to drive the hydrogen in the hydrogen storage cylinder 3 to quickly enter the hydrogen bottle 51 to improve the test efficiency.

[0028] In one embodiment, see Figure 5 The hydrogen storage well simulation test device also includes an electrochemical corrosion component 6, which is used to make a hydrogen storage cylinder after corrosion using the corrosive soil at the location of the hydrogen storage well project. The electrochemical corrosion component 6 includes a corrosion mechanism, a water replenishment mechanism and a liquid replenishment mechanism. The corrosion mechanism includes a corrosion box 61, an electrode test piece, a constant potential instrument 62 and a computer 63. The corrosion box 61 is provided with a storage cavity for placing the corrosive soil. The corrosive soil can be taken from the location of the hydrogen storage well project, so that the test results can be truly reflected. The storage cavity is also used to place the hydrogen storage cylinder 3. The electrode test piece is arranged in the storage cavity. The constant potential instrument is connected to the electrode test piece and the computer. The water replenishment mechanism and the liquid replenishment mechanism are both connected to the corrosion box. The hydrogen storage cylinder 3 and the electrode test piece are both covered with corrosive soil in the storage cavity, which can simulate the corrosion resistance of the hydrogen storage cylinder 3 under actual conditions. The electrode test piece can test the electrical parameters of the corrosive soil and feed back to the constant potential instrument 62 for the staff to refer to.

[0029] In one embodiment, see Figure 5 The water replenishment mechanism includes a water tank 71, a water pipe 72, a water valve 73 and a humidity detector 74. The water pipe 72 connects the water tank 71 and the storage chamber, the water valve 73 is arranged on the water pipe 72, and the humidity detector 74 is arranged in the storage chamber and connected to the water valve. In this embodiment, the water tank 71 can store a certain amount of clean water in advance, and the humidity detector 74 can detect the humidity of the corrosive soil, and can control the water valve 73 to open when the humidity of the corrosive soil is lower than a preset value, so that the clean water in the water tank 71 flows into the storage chamber through the water pipe 72, replenishes water for the corrosive soil, and makes the humidity of the corrosive soil reach the required range of the test.

[0030] In one embodiment, see Figure 5The replenishing mechanism includes a PH solution box 75, a PH tube 76, a PH valve 77 and a PH detector 78. The PH tube 76 connects the PH box 75 and the storage chamber, the PH valve 77 is arranged on the PH tube 76, and the PH detector is arranged in the storage chamber and connected to the PH valve. In this embodiment, the PH box 75 can store a certain amount of PH regulating liquid in advance, such as an acidic solution, dilute hydrochloric acid, or an alkaline solution, etc., which can be configured according to the test needs. The PH detector 78 is used to detect the PH value of the corrosive soil. When the PH value of the corrosive soil does not reach the preset range, the PH detector 78 controls the PH valve to open the PH tube 76, so that the PH regulating liquid in the PH box flows into the storage chamber through the PH tube 76 and contacts with the corrosive soil, so that the PH value of the corrosive soil reaches within the preset range.

[0031] In one embodiment, see Figure 5 The electrode test piece includes a reference electrode 79 and an auxiliary electrode 80, and both the reference electrode 79 and the auxiliary electrode 80 are connected to the constant potential instrument 62. Both the reference electrode 79 and the auxiliary electrode 80 are in contact with the corroded soil, and both can detect the electrical index of the corroded soil and feed it back to the constant potential instrument 62 for the staff to refer to. The auxiliary electrode 80 plays an auxiliary role in the measurement process of the hydrogen storage cylinder 3, and is mainly used to form a closed loop together with the hydrogen storage cylinder 3. The reference electrode 79 plays a reference role in the measurement process of the hydrogen storage cylinder 3, and its potential is fixed and known, so the potential of the hydrogen storage cylinder 3 can be obtained by solving the potential difference between the hydrogen storage cylinder 3 and the reference electrode 79.

[0032] In a second aspect, the present invention further provides a test method, which is implemented using the above-mentioned hydrogen storage well simulation test device, and the test method comprises the following steps: According to different test requirements, boxes 1 of different specifications and sizes are made, hydraulic components and pressure plates are installed on the side walls around the box 1, and the accommodating cavity 11 inside the box 1 is filled with a simulated soil layer 9 made according to the physical parameters of the actual soil layer. According to the confining pressure measured at the location of the hydrogen storage well project, the pressure of the hydraulic components is adjusted to drive the pressure plate to squeeze the simulated soil layer to simulate the confining pressure; A corrosion box is made according to the test requirements, and the corrosive soil at the location of the hydrogen storage well project is filled in it. A reference electrode, an auxiliary electrode and a hydrogen storage cylinder are set in it and connected to a constant potential instrument. A water replenishment mechanism and a liquid replenishment mechanism are installed on both sides of the corrosion box and connected to the corrosion box through a soft water pipe; A hydrogen storage well hole is formed by drilling a hole in the simulated soil layer inside the box using a small drilling device, the hydrogen storage cylinder after electrochemical corrosion is sunk into the hydrogen storage well hole, and a cement ring is poured to complete the production of the hydrogen storage well simulation module; A number of hydrogen detectors and stress strain gauges are arranged in the simulated soil layer along the circumferential direction based on the center line of the hydrogen storage well, and are connected to the computer system through signal sensors to detect the hydrogen leakage of the hydrogen storage well and the change value of the surrounding rock pressure in real time; One end of the anti-pullout hydraulic component is connected to the top plate, and the other end is connected to the lifting component. The hydrogen storage cylinder is driven upward by a pull line set on the lifting component to test the vertical restraint force of the cement ring on the hydrogen storage cylinder; Install a hydrogen cylinder and connect it to the hydrogen storage cylinder through an input pipe. At the same time, a booster pump, an exhaust pump and a control valve are set on the input pipe to circulate hydrogen to or discharge hydrogen from the hydrogen storage cylinder to simulate the operation process of a hydrogen storage well; During the startup process, the hydrogen detector and stress strain gauge monitor the strain and / or surface deformation and damage of the simulated soil layer inside the box due to hydrogen filling or dehydration, and monitor the hydrogen leakage of the hydrogen storage well. The monitoring data obtained from the above monitoring are collected, recorded and analyzed.

[0033] The specific implementation of the present invention described above does not constitute a limitation on the protection scope of the present invention. Any other corresponding changes and modifications made based on the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A hydrogen storage well simulation test device, characterized in that: include: A box assembly comprises a box, a hydrogen storage well and a hydrogen storage cylinder, wherein the box is provided with a receiving cavity for receiving simulated soil, the hydrogen storage well is located in the receiving cavity, and the hydrogen storage cylinder is located in the hydrogen storage well; A detection assembly, comprising a plurality of hydrogen detectors arranged around the circumference of the hydrogen storage well; and The pull-out test assembly comprises a top plate, a pull-out hydraulic component and a lifting component, wherein the top plate is used to be placed on the simulated soil of the accommodating cavity, the pull-out hydraulic component is arranged on the top plate and connected to the lifting component, and the lifting component is connected to the hydrogen storage cylinder.

2. The hydrogen storage well simulation test device according to claim 1, characterized in that: The detection component includes multiple support rings and multiple support columns. The multiple support rings are spaced up and down, and the multiple support columns are arranged around the circumference of the support rings. The two ends of each support column are connected to the upper and lower adjacent support rings, and the multiple hydrogen detectors are arranged around the circumference of the support rings.

3. The hydrogen storage well simulation test device according to claim 2, characterized in that: The detection assembly further includes a plurality of stress strain gauges, which surround the supporting ring and are arranged on the corresponding supporting columns.

4. The hydrogen storage well simulation test device according to claim 1, characterized in that: The box assembly also includes a pressure-bearing mechanism, which includes a first hydraulic component, a second hydraulic component, a first pressure-bearing plate and a second pressure-bearing plate. The first pressure-bearing plate and the second pressure-bearing plate are arranged on the left and right sides of the inner wall of the box. The first hydraulic component is connected to the first pressure-bearing plate, and the second hydraulic component is connected to the second pressure-bearing plate. The first pressure-bearing plate, the second pressure-bearing plate and the top plate enclose the accommodating cavity.

5. The hydrogen storage well simulation test device according to claim 1, characterized in that: The hydrogen storage well simulation test device also includes a hydrogen supply component, which includes a hydrogen bottle, a first control valve, a first boost pump and an input pipe. The two ends of the input pipe are connected to the hydrogen bottle and the air inlet end of the hydrogen storage well. The first control valve and the first boost pump are both arranged on the input pipe.

6. The hydrogen storage well simulation test device according to claim 5, characterized in that: The hydrogen supply assembly also includes an output pipe, a second control valve and a second boost pump. The two ends of the output pipe are respectively connected to the hydrogen bottle and the gas outlet end of the hydrogen storage well. The second control valve and the second boost pump are both arranged on the output pipe.

7. The hydrogen storage well simulation test device according to claim 1, characterized in that: The hydrogen storage well simulation test device also includes an electrochemical corrosion component, which includes a corrosion mechanism, a water replenishment mechanism and a liquid replenishment mechanism. The corrosion mechanism includes a corrosion box, an electrode test piece, a constant potentiostat and a computer. The corrosion box is provided with a storage cavity for placing the simulated soil, and the storage cavity is also used to place the hydrogen storage cylinder. The electrode test piece is arranged in the storage cavity. The constant potentiostat is connected to the electrode test piece and the computer, and the water replenishment mechanism and the liquid replenishment mechanism are both connected to the corrosion box.

8. The hydrogen storage well simulation test device according to claim 7, characterized in that: The water replenishment mechanism includes a water tank, a water pipe, a water valve and a humidity detector, the water pipe is connected to the water tank and the storage cavity, the water valve is arranged on the water pipe, and the humidity detector is arranged in the storage cavity and connected to the water valve.

9. The hydrogen storage well simulation test device according to claim 7, characterized in that: The fluid replenishing mechanism includes a PH solution box, a PH tube, a PH valve and a PH detector, the PH tube is connected to the PH box and the storage cavity, the PH valve is arranged on the PH tube, and the PH detector is arranged in the storage cavity and connected to the PH valve.

10. A test method, characterized in that: The test method is implemented using the hydrogen storage well simulation test device as described in any one of claims 1 to 9, and the test method comprises the following steps: According to different test requirements, boxes of different specifications and sizes are made, hydraulic parts and pressure plates are installed on the side walls around the box, and the accommodating cavity is filled with a simulated soil layer made according to the physical parameters of the actual soil layer. According to the confining pressure measured at the location of the hydrogen storage well project, the pressure of the hydraulic parts is adjusted to drive the pressure plate to squeeze the simulated soil layer to simulate the confining pressure; A corrosion box is made according to the test requirements, and the corrosive soil at the location of the hydrogen storage well project is filled in it. A reference electrode, an auxiliary electrode and a hydrogen storage cylinder are set in it and connected to a constant potential instrument. A water replenishment mechanism and a liquid replenishment mechanism are installed on both sides of the corrosion box and connected to the corrosion box through a soft water pipe; A hydrogen storage well hole is formed by drilling a hole in the simulated soil layer inside the box using a small drilling device, the hydrogen storage cylinder after electrochemical corrosion is sunk into the hydrogen storage well hole, and a cement ring is poured to complete the production of the hydrogen storage well simulation module; A number of hydrogen detectors and stress strain gauges are arranged in the simulated soil layer along the circumferential direction based on the center line of the hydrogen storage well, and are connected to the computer system through signal sensors to detect the hydrogen leakage of the hydrogen storage well and the change value of the surrounding rock pressure in real time; One end of the anti-pullout hydraulic component is connected to the top plate, and the other end is connected to the lifting component. The hydrogen storage cylinder is driven upward by a pull line set on the lifting component to test the vertical restraint force of the cement ring on the hydrogen storage cylinder; Install a hydrogen cylinder and connect it to the hydrogen storage cylinder through an input pipe. At the same time, a booster pump, an exhaust pump and a control valve are set on the input pipe to circulate hydrogen to or discharge hydrogen from the hydrogen storage cylinder to simulate the operation process of a hydrogen storage well; During the startup process, the hydrogen detector and stress strain gauge monitor the strain and / or surface deformation and damage of the simulated soil layer inside the box due to hydrogen filling or dehydration, and monitor the hydrogen leakage of the hydrogen storage well. The monitoring data obtained from the above monitoring are collected, recorded and analyzed.

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