A force sensing device, gas storage ground surface lift monitoring system and method

Abstract

The application relates to the technical field of surface detection, in particular to a force sensing device, a gas storage ground surface lifting monitoring system and method, which comprises a base, a bidirectional bearing installed in the base, an extension rod installed in the bearing, a force sensing assembly fixed on the extension rod, the force sensing assembly comprises a sealed shell, a resistance assembly installed in the sealed shell, and a metal wire with one end penetrating through the resistance assembly and fixed in the sealed shell, the force sensing device is designed, the up-down displacement of the force sensing device can be changed into an electric signal of the resistance assembly, the electric signal is analyzed, and the displacement of the gas storage ground surface lifting can be converted; the force sensing device is simple and small in structure, convenient to deploy and monitor, low in cost, and good in economic value for the problem of small-area gas storage ground surface subsidence monitoring.

Description

Technical Field

[0001] This invention relates to the field of surface detection technology, specifically to a force-sensitive device, a gas storage surface rise and fall monitoring system and method. Background Technology

[0002] Salt rock exhibits typical creep characteristics, causing the volume of salt cavern gas storage facilities to change continuously over time. A decrease in the volume reduces the peak-shaving capacity of the storage facility and can lead to surface subsidence, even collapse, rendering the storage facility unusable. Conversely, an increase in the volume may cause excessive pressure within the storage facility, potentially resulting in an explosion. Given this background, changes in the ground surface around salt cavern gas storage facilities have become a significant factor affecting their safety. Current detection methods include satellite observation and static liquid level monitoring. Both methods are suitable for large-area observation but are expensive. For small-area gas storage facilities, deployment is complex and costly, making them uneconomical. Summary of the Invention

[0003] This invention addresses the technical problems existing in the prior art by providing a force-sensitive device, a gas storage ground elevation monitoring system and method to solve the problem of ground subsidence monitoring in small-area gas storage facilities.

[0004] The technical solution of the present invention to solve the above-mentioned technical problems is as follows:

[0005] A force-sensitive device is provided, the force-sensitive device comprising:

[0006] Base;

[0007] A bidirectional bearing is installed within the base;

[0008] The telescopic rod installed in the bearing; and

[0009] Force-sensitive component fixed to the telescopic rod;

[0010] The force-sensitive component includes a sealed housing, a resistor assembly installed inside the sealed housing, and a metal wire with one end passing through the resistor assembly and fixed inside the sealed housing.

[0011] Furthermore, the resistor assembly includes:

[0012] The annular seat installed within the sealed housing; and

[0013] Two force-sensitive resistors are mounted on the ring seat;

[0014] Both force-sensitive resistors are horizontally arranged, and the distance between the two force-sensitive resistors is equal to the diameter of the metal wire;

[0015] The metal wire passes between the two force-sensitive resistors.

[0016] Furthermore, the sealing housing is provided with a clearance opening, and a clearance groove is provided between the inner and outer walls of the clearance opening;

[0017] A sealing gasket is slidably installed in the relief groove, and the sealing gasket has a hole for the metal wire to pass through.

[0018] Furthermore, the bidirectional bearing includes:

[0019] End face bearings; and

[0020] A planar bearing is mounted on the inner ring of the end face bearing.

[0021] Furthermore, the upper layer of the planar bearing is a tight ring, and the lower layer is a loose ring, with the loose ring integrally formed with the inner ring of the end face bearing;

[0022] The outer diameter of the loose ring is smaller than the outer diameter of the tight ring and the outer ring of the end face bearing, and the inner diameter of the loose ring is smaller than the inner diameter of the tight ring.

[0023] A surface rise and fall monitoring system for a gas storage facility is provided, the monitoring system comprising:

[0024] Several pairs of detection devices;

[0025] Each of the aforementioned detection devices includes a fixed part installed below the ground surface, with the upper end of the fixed part located above the ground surface;

[0026] The force-sensitive device described above is installed on the upper end of the fixing part, and any pair of the detection devices are connected by the metal wire; and

[0027] An electrical device used to detect changes in the resistance of the resistor assembly.

[0028] Furthermore, the fixing part includes:

[0029] Mounting cylinder;

[0030] A rotating seat is rotatably mounted on the upper end of the mounting cylinder; the force-sensitive device is mounted on the rotating seat; a conical head is mounted on the bottom end of the mounting cylinder; and

[0031] A rotating component is rotatably mounted inside the mounting cylinder, with the bottom end of the rotating component rotatably mounted on the conical head;

[0032] The mounting cylinder has several openings on its side wall to make way for the rotating component.

[0033] Furthermore, the rotating component includes:

[0034] Drive head; and

[0035] Several rotating components are connected in series at the lower end of the drive head;

[0036] The drive head is fixed on the rotating base;

[0037] The drive head has a drive hole, and the rotating seat has a clearance notch for the pry bar to pass through.

[0038] Furthermore, the rotating assembly includes:

[0039] The connector has several mounting positions arranged in a ring on its outer wall;

[0040] A rotating shaft that snaps into the lower end of the connector;

[0041] A sleeve fitted on the rotating shaft, the sleeve being provided with a hinged sleeve;

[0042] Rotary blade mounted on the hinged cylinder; and

[0043] An abutment card is mounted at one end on one of the mounting positions, and the other end of the abutment card is mounted on the adjacent mounting position of the rotating assembly;

[0044] The two adjacent contact cards form an angle between each other, and the two adjacent hinge cylinders form an angle between each other.

[0045] The lower adjacent connector is snapped into the lower end of the upper rotating shaft, and the lowermost rotating shaft is mounted on the conical head via a bearing.

[0046] A method for monitoring surface rise and fall in a gas storage facility is provided, the method comprising the following steps:

[0047] S1: Drill several monitoring holes on the surface of the gas storage facility where monitoring is required, and drill several comparison holes on the surface outside the gas storage facility. Place the detection device as described in any one of claims 6 to 9 into the monitoring holes and the comparison holes respectively.

[0048] S2: Pass the pry bar through the clearance notch on the rotating seat and the drive hole on the drive head, rotate the pry bar to drive the drive head to rotate, the drive head to drive several rotating components to rotate, and then the rotating components will contact the rotating blades, so that the outer edges of several rotating blades will rotate through several opening slots on the side wall of the mounting cylinder, and then rotate and fix them in the stratum below the ground surface, thus fixing the testing device.

[0049] S3: By adjusting the telescopic rod, use a level and height gauge to place the force-sensitive devices in the monitoring hole and the comparison hole at the same height, and connect the force-sensitive devices in the monitoring hole and the comparison hole in pairs with metal wires, and the metal wires do not interfere with each other;

[0050] S4: By detecting and comparing the resistance changes of the force-sensitive component inside the monitoring hole and the hole, the electrical device can convert the resistance change into torque. When the resistance change inside the monitoring hole is positive, it indicates that the ground surface of the monitoring point has moved upward; conversely, a negative value indicates that the ground surface of the monitoring point has subsided.

[0051] S5: Add the torque values ​​converted from the resistance changes of the resistance components in the monitoring holes and the comparison holes. The sum is the displacement of the gas storage surface change, where positive and negative values ​​indicate the direction of displacement.

[0052] The beneficial effects of this invention are:

[0053] 1. This invention designs a force-sensitive device that converts the vertical displacement of the force-sensitive device into an electrical signal from a resistive component. By analyzing the electrical signal, it can be converted into the displacement of the gas storage facility's ground level. The force-sensitive device of this invention has a simple and compact structure, is easy to deploy and monitor, and is low in cost. It has good economic value for addressing the problem of ground subsidence monitoring in small-area gas storage facilities.

[0054] 2. This invention designs a gas storage ground surface rise and fall monitoring system, which includes several pairs of monitoring devices and comparison devices. It can take observation points at any location on the ground of a small gas storage facility, and by setting up comparison devices, it can reduce monitoring errors and improve the accuracy of monitoring data.

[0055] 3. This invention provides a method for monitoring surface subsidence in gas storage facilities. It utilizes electrical devices to detect changes in resistance values ​​of the force-sensitive components within monitoring holes and comparison holes. These devices convert resistance changes into torque. A positive resistance value indicates that the ground surface at the monitoring point has moved upwards, while a negative value indicates that the ground surface has subsided. The torque values ​​converted from the resistance changes in the monitoring and comparison holes are summed to obtain the displacement of the gas storage facility's surface. Positive and negative values ​​indicate the direction of displacement. This monitoring method is simple, convenient, and highly accurate, possessing significant application and economic value for monitoring ground subsidence in small-area gas storage facilities. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the deployment of the gas storage surface rise and fall monitoring system of the present invention;

[0057] Figure 2 This is a schematic diagram illustrating the derivation of the principle of the present invention;

[0058] Figure 3 This is a partial schematic diagram of the surface rise and fall monitoring system for gas storage facilities according to the present invention;

[0059] Figure 4 This is a schematic diagram of the overall structure of the force-sensitive device of the present invention;

[0060] Figure 5 This is an exploded view of the overall structure of the force-sensitive device of the present invention;

[0061] Figure 6 This is a partial exploded view of the force-sensitive device of the present invention;

[0062] Figure 7 This is an exploded view of the overall structure of the bidirectional bearing of the present invention;

[0063] Figure 8 This is a schematic diagram of the overall structure of the detection device of the present invention;

[0064] Figure 9 This is an exploded view of the overall structure of the detection device of the present invention. Figure 1 ;

[0065] Figure 10 This is an exploded view of the overall structure of the detection device of the present invention. Figure 2 ;

[0066] Figure 11 For the present invention Figure 10 A magnified view of the area marked "A" in the image.

[0067] Figure 12 This is an exploded view of the rotating component of the present invention.

[0068] The attached diagram lists the components represented by each number as follows:

[0069] 100. Force-sensitive device; 101. Base; 102. Double-direction bearing; 1021. End face bearing; 1022. Surface bearing; 1023. Tightening ring; 1024. Loosening ring; 103. Telescopic rod; 1031. Rotating rod; 1032. Adjusting rod; 104. Force-sensitive assembly; 1041. Sealing housing; 1042. Resistor assembly; 1043. Metal wire; 1044. Ring seat; 1045. Force-sensitive resistor; 1046. Displacement port; 1047. Displacement groove; 1048. Sealing gasket;

[0070] 200. Detection device; 201. Fixing part; 2011. Mounting cylinder; 2012. Rotating seat; 2013. Conical head; 2014. Opening groove; 2015. Clearance notch;

[0071] 300. Rotating component; 301. Drive head; 3011. Drive hole; 302. Rotating assembly; 3021. Connector; 3022. Mounting position; 3023. Rotating shaft; 3024. Sleeve; 3025. Hinge sleeve; 3026. Rotating blade; 3027. Contact clip. Detailed Implementation

[0072] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Furthermore, it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0073] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "left", "right", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0074] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this invention, "a number" means two or more, unless otherwise explicitly specified.

[0075] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows for communication; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0076] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0077] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0078] The present invention provides the following preferred embodiments:

[0079] refer to Figures 4 to 7 As shown, a force-sensitive device, the force-sensitive device 100 comprising:

[0080] Base 101;

[0081] A bidirectional bearing 102 is installed inside the base 101;

[0082] The telescopic rod 103 installed in the bidirectional bearing 102; and

[0083] Force-sensitive component 104 fixed to the telescopic rod 103;

[0084] The force-sensitive component 104 includes a sealed housing 1041, a resistor component 1042 installed in the sealed housing 1041, and a metal wire 1043 with one end passing through the resistor component 1042 and fixed in the sealed housing 1041.

[0085] By designing the force-sensitive device 100, the vertical displacement of the force-sensitive device 100 can be converted into an electrical signal of the resistor component 1042. By analyzing the electrical signal, it can be converted into the displacement of the gas storage ground. The force-sensitive device 100 of the present invention has a simple and compact structure, is easy to deploy and monitor, and has low cost. It has good economic value for the problem of monitoring ground subsidence in small-area gas storage facilities.

[0086] Furthermore, the resistor assembly 1042 includes:

[0087] The annular seat 1044 installed within the sealing housing 1041; and

[0088] Two force-sensitive resistors 1045 are mounted on the ring seat 1044;

[0089] Both force-sensitive resistors 1045 are horizontally arranged, and the distance between the two force-sensitive resistors 1045 is equal to the diameter of the metal wire 1043;

[0090] The metal wire 1043 passes between the two force-sensitive resistors 1045.

[0091] The force-sensitive resistor 1045 is composed of a conductive polymer that changes its resistance in a predictable manner after a force is applied to its surface. They are typically supplied as polymer sheets or inks, which can be applied via screen printing. The sensing membrane consists of conductive and non-conductive particles suspended in a matrix. The particles are submicron in size, which reduces temperature dependence, improves mechanical properties, and enhances surface durability. Applying a force to the surface of the sensing membrane causes the particles to contact the conductive electrodes, thereby changing the membrane's resistance.

[0092] Based on the characteristics of the force-sensitive resistor 1045, the deformation of the metal wire 1043 causes it to come into contact with the force-sensitive resistor 1045, resulting in a change in its resistance. According to the law of resistance change, this change is converted into a vector displacement of the metal wire 1043, and the height change of the metal wire 1043 can then be calculated.

[0093] Furthermore, the sealing housing 1041 is provided with a clearance opening 1046, and a clearance groove 1047 is provided between the inner and outer walls of the clearance opening 1046.

[0094] A sealing gasket 1048 is slidably installed in the relief groove 1047, and the sealing gasket 1048 has a hole for the metal wire 1043 to pass through.

[0095] The sealing gasket 1048 can slide freely within the relief groove 1047 to prevent rainwater and dust from entering the sealing housing 1041 and to not obstruct the displacement of the metal wire 1043. Considering that the sealing gasket 1048 is often made of soft material, which is not conducive to sliding within the relief groove 1047, it is understandable that in specific implementation, the sealing gasket 1048 can be installed inside the bracket plate, and the bracket plate can be installed inside the relief groove 1047 to ensure that the sealing gasket 1048 can slide smoothly.

[0096] Furthermore, the bidirectional bearing 102 includes:

[0097] End face bearing 1021; and

[0098] A planar bearing 1022 is disposed on the inner ring of the end face bearing 1021.

[0099] The telescopic rod 103 includes a rotating rod 1031 and an adjusting rod 1032. A sealing housing 1041 is installed on the upper end of the adjusting rod 1032. The bottom of the rotating rod 1031 is installed in a double-bearing bearing 102. The purpose of setting the double-bearing bearing 102 is to enable the telescopic rod 103 to rotate freely in the bearing groove of the base 101. The double-bearing bearing 102 can greatly reduce the vertical and horizontal friction of the rotating rod 1031. The horizontal friction comes from the friction between the bearing sealing cover and the upper end face of the tight ring 1023 of the plane bearing 1022.

[0100] Furthermore, the upper layer of the planar bearing 1022 is a tight ring 1023, and the lower layer is a loose ring 1024, which is integrally formed with the inner ring of the end face bearing 1021;

[0101] The outer diameter of the loose ring 1024 is smaller than the outer diameter of the tight ring 1023 and the outer ring of the end face bearing 1021, and the inner diameter of the loose ring 1024 is smaller than the inner diameter of the tight ring 1023.

[0102] The outer diameter of the loose ring 1024 is smaller than the outer diameter of the tight ring 1023 and the outer diameter of the outer ring of the end face bearing 1021. This design aims to prevent the loose ring 1024 from rubbing against the inner wall of the bearing groove of the base 101 during rotation. In addition, the inner diameter of the loose ring 1024 is smaller than the inner diameter of the tight ring 1023, avoiding contact between the rotating rod 1031 and the tight ring 1023. Both of these designs further reduce the rotational resistance of the rotating rod 1031. A sealing gasket 1048 is installed between the bearing seal cover and the double-sided bearing. The sealing gasket 1048 has a hole for the rotating rod 1031 to pass through. The diameter of the mounting hole for the rotating rod 1031 to pass through on the bearing seal cover is larger than the diameter of the rotating rod 1031.

[0103] refer to Figure 3 and Figures 8 to 12 A surface rise and fall monitoring system for a gas storage facility is provided, the monitoring system comprising:

[0104] Several pairs of detection devices 200;

[0105] Each of the aforementioned detection devices 200 includes a fixing part 201 installed below the ground surface, with the upper end of the fixing part 201 located above the ground surface;

[0106] The force-sensitive device 100, as described above, is installed on the upper end of the fixing part 201, and any pair of the detection devices 200 are connected by the metal wire 1043; and

[0107] An electrical device used to detect changes in the resistance of the resistor assembly 1042.

[0108] Several monitoring holes are drilled on the surface B of the gas storage facility to be monitored, and several comparison holes are drilled on the surface outside the gas storage facility. Detection devices 200 are placed in the monitoring holes and comparison holes respectively. By adjusting the telescopic rod 103, the force-sensitive devices 100 in the monitoring holes and comparison holes are placed at the same height using a level and a height gauge. The force-sensitive devices 100 in the monitoring holes and comparison holes are connected in pairs by metal wires 1043, and the metal wires 1043 do not interfere with each other.

[0109] refer to Figure 1 and Figure 2 As shown, the distance between the ring seat 1044 and the mounting point of the metal wire 1043 inside the sealing housing 1041 is fixed. It should be noted that the metal wire 1043 has a certain toughness and can be stretched. If necessary, a telescopic buffer assembly can be added at the mounting point of the metal wire 1043 inside the sealing housing 1041 to offset the deformation and stretching of the metal wire 1043, so that the metal wire 1043 does not need to have a stretching capacity.

[0110] Based on the above conditions, we assume:

[0111] The distance between the mounting point of the ring seat 1044 and the metal wire 1043 inside the sealing housing 1041 is d;

[0112] The length of the metal wire 1043 between the two detection devices 200 is l;

[0113] When the surface of the gas storage facility changes, it will cause the metal wire 1043 to stretch. The angle between the stretched metal wire 1043 and the metal wire 1043 in the initial state is recorded as ∠α.

[0114] The torques converted from the resistance changes of the force-sensitive resistors 1045 in the two ring seats 1044 within the comparison hole and the monitoring hole are recorded as h1 and h2, respectively.

[0115] The angle between the metal wire 1043 and the initial position metal wire 1043 between the monitoring hole inner ring seat 1044 and the installation point of the metal wire 1043 inside the sealing shell 1041 is recorded as ∠β;

[0116] We know that ∠α=∠β;

[0117] According to the formula:

[0118] tan∠α=tan∠β=h1 / d=(H-h2) / d=H / I+2d, therefore:

[0119] h1 = H - h2, that is, H = h1 + h2;

[0120] Understandably, H = h1 + h2 can also be derived here based on the judgment condition of equal triangles; according to the formula, when the value of l is larger, h1 is smaller; in addition, considering the influence of the weight of the metal wire 1043 itself, when deploying the detection device 200, the length of the metal wire 1043 between the two detection devices 200 at the comparison hole 200-2 and the monitoring hole 200-1 should be shortened as much as possible for more accurate measurement.

[0121] By detecting and comparing the resistance changes of the force-sensitive component 1042 inside the monitoring hole and the hole, the electrical device can convert the resistance change into torque. When the resistance component 1042 inside the monitoring hole changes to a positive value, it indicates that the ground surface of the monitoring point has moved upward, and vice versa, a negative value indicates that the ground surface of the monitoring point has subsided.

[0122] The above calculations show that the height of the gas storage facility's surface rise and fall is the sum of the torque values ​​converted from the resistance changes of the resistor component 1042 inside the monitoring and comparison holes.

[0123] Furthermore, the fixing part 201 includes:

[0124] Mounting cylinder 2011;

[0125] Rotary seat 2012 is rotatably mounted on the upper end of the mounting cylinder 2011, and force-sensitive device 100 is mounted on the rotary seat 2012;

[0126] The conical head 2013 installed at the bottom end of the mounting cylinder 2011; and

[0127] A rotating component 300 is rotatably installed inside the mounting cylinder 2011, and the bottom end of the rotating component 300 is rotatably installed on the conical head 2013;

[0128] The mounting cylinder 2011 has several openings 2014 on its side wall to make way for the rotating component 300.

[0129] Furthermore, the rotating component 300 includes:

[0130] Drive head 301; and

[0131] A plurality of rotating components 302 are connected in series at the lower end of the drive head 301;

[0132] The drive head 301 is fixed on the rotating seat 2012;

[0133] The drive head 301 has a drive hole 3011, and the rotating seat 2012 has a clearance notch 2015 for the pry bar to pass through.

[0134] Furthermore, the rotating assembly 302 includes:

[0135] The connector 3021 has a plurality of mounting positions 3022 arranged in a ring on its outer wall;

[0136] A rotating shaft 3023 is snapped into the lower end of the connector 3021;

[0137] A sleeve 3024 is fitted onto the rotating shaft 3023, and a hinged sleeve 3025 is provided on the sleeve 3024;

[0138] Rotary blade 3026 rotatably mounted on the hinge cylinder 3025; and

[0139] An abutment card 3027 is mounted at one end on one of the mounting positions 3022, and the other end of the abutment card 3027 is mounted on the adjacent mounting position 3022 of the rotating assembly 302;

[0140] The two adjacent contact cards 3027 are at a certain angle to each other, and the two adjacent hinge cylinders 3025 are at a certain angle to each other.

[0141] The lower adjacent connector 3021 is snapped into the lower end of the upper rotating shaft 3023, and the lowermost rotating shaft 3023 is mounted on the conical head 2013 through a bearing.

[0142] The pry bar is passed through the clearance notch 2015 on the rotating seat 2012 and the drive hole 3011 on the drive head 301. The pry bar is rotated to drive the drive head 301 to rotate. The drive head 301 drives several rotating components 302 to rotate, which in turn causes the contact card 3027 to rotate and contact the rotating blade 3026. This causes the outer edges of several rotating blades 3026 to rotate and pass through several opening slots 2014 on the side wall of the mounting cylinder 2011, and then rotate and fix them in the stratum below the ground surface, thus fixing the detection device.

[0143] refer to Figure 1 , Figure 2 As shown, a method for monitoring surface rise and fall in a gas storage facility is provided, the method comprising the following steps:

[0144] S1: Drill several monitoring holes on the surface of the gas storage facility where monitoring is required, and at the same time drill several comparison holes on the surface outside the gas storage facility. Place a detection device 200 in each of the monitoring holes and comparison holes.

[0145] S2: Pass the pry bar through the clearance notch 2015 on the rotating seat 2012 and the drive hole 3011 on the drive head 301, rotate the pry bar to drive the drive head 301 to rotate, the drive head 301 drives several rotating components 302 to rotate, and then the contact card 3027 rotates to contact the rotating blade 3026, so that the outer edges of several rotating blades 3026 rotate through several opening slots 2014 on the side wall of the mounting cylinder 2011, and then rotate and fix them in the stratum below the ground surface, so that the detection device is fixed.

[0146] S3: By adjusting the telescopic rod 103, use a level and a height gauge to place the force-sensitive devices 100 in the monitoring hole and the comparison hole at the same height, and connect the force-sensitive devices 100 in the monitoring hole and the comparison hole in pairs through metal wires 1043, and the metal wires 1043 do not interfere with each other.

[0147] S4: The electrical device detects and compares the resistance change of the force-sensitive component 1042 inside the hole and the monitoring hole. The electrical device can convert the resistance change into torque. When the resistance component 1042 inside the monitoring hole changes to a positive value, it indicates that the ground surface of the monitoring point has moved upward. Conversely, a negative value indicates that the ground surface of the monitoring point has subsided.

[0148] S5: Add the torque values ​​converted from the resistance changes of the resistance component 1042 in the monitoring hole and the comparison hole. The sum is the displacement of the gas storage surface change, where positive and negative values ​​indicate the direction of displacement.

[0149] The beneficial effects of the present invention are specifically reflected in the fact that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A force-sensitive device, characterized in that, The force-sensitive device (100) includes: Base (101); A bidirectional bearing (102) is installed in the base (101); The telescopic rod (103) installed within the bidirectional bearing (102); and Force-sensitive component (104) fixed to the telescopic rod (103); The force-sensitive component (104) includes a sealed housing (1041), a resistor component (1042) installed in the sealed housing (1041), and a metal wire (1043) with one end passing through the resistor component (1042) and fixed in the sealed housing (1041).

2. The force-sensitive device according to claim 1, characterized in that, The resistor assembly (1042) includes: The annular seat (1044) installed within the sealing housing (1041); and Two force-sensitive resistors (1045) are mounted on the ring seat (1044); Both force-sensitive resistors (1045) are horizontally arranged, and the distance between the two force-sensitive resistors (1045) is equal to the diameter of the metal wire (1043); The metal wire (1043) passes between the two force-sensitive resistors (1045).

3. The force-sensitive device according to claim 1, characterized in that, The sealing housing (1041) is provided with a relief opening (1046), and a relief groove (1047) is provided between the inner and outer walls of the relief opening (1046). A sealing gasket (1048) is slidably installed in the relief groove (1047), and the sealing gasket (1048) has a hole for the metal wire (1043) to pass through.

4. The force-sensitive device according to claim 1, characterized in that, The bidirectional bearing (102) includes: End face bearing (1021); and A flat bearing (1022) is disposed on the inner ring of the end face bearing (1021).

5. The force-sensitive device according to claim 4, characterized in that, The upper layer of the planar bearing (1022) is a tight ring (1023), and the lower layer is a loose ring (1024). The loose ring (1024) is integrally formed with the inner ring of the end face bearing (1021). The outer diameter of the loose ring (1024) is smaller than the outer diameter of the tight ring (1023) and the outer ring of the end face bearing (1021), and the inner diameter of the loose ring (1024) is smaller than the inner diameter of the tight ring (1023).

6. A surface rise and fall monitoring system for a gas storage facility, characterized in that, The detection system includes: Several pairs of detection devices (200); Each of the detection devices (200) includes a fixing part (201) installed below the ground surface, the upper end of the fixing part (201) being located above the ground surface; The force-sensitive device (100) as described in any one of claims 1 to 5 is mounted on the upper end of the fixing part (201), and any pair of the detection devices (200) are connected by the metal wire (1043); and An electrical device used to detect changes in the resistance of the resistor assembly (1042).

7. The gas storage surface rise and fall monitoring system according to claim 6, characterized in that, The fixing part (201) includes: Mounting cylinder (2011); Rotary seat (2012) is rotatably mounted on the upper end of the mounting cylinder (2011), and the force-sensitive device (100) is mounted on the rotating seat (2012); A conical head (2013) installed at the bottom end of the mounting cylinder (2011); and A rotating component (300) is rotatably installed inside the mounting cylinder (2011), and the bottom end of the rotating component (300) is rotatably installed on the conical head (2013); The mounting cylinder (2011) has several openings (2014) on its side wall to make way for the rotating component (300).

8. The gas storage surface rise and fall monitoring system according to claim 7, characterized in that, The rotating component (300) includes: Drive head (301); and A plurality of rotating components (302) are connected in series at the lower end of the drive head (301); The drive head (301) is fixed on the rotating base (2012); The drive head (301) has a drive hole (3011), and the rotating seat (2012) has a clearance notch (2015) for the pry bar to pass through.

9. The gas storage surface rise and fall monitoring system according to claim 8, characterized in that, The rotating assembly (302) includes: The connector (3021) has a plurality of mounting positions (3022) arranged in a ring on its outer wall; A rotating shaft (3023) is snapped into the lower end of the connector (3021); A sleeve (3024) is sleeved on the rotating shaft (3023), and a hinged sleeve (3025) is provided on the sleeve (3024); Rotary blade (3026) mounted on the hinged cylinder (3025); and An abutment card (3027) is mounted at one end on one of the mounting positions (3022), and the other end of the abutment card (3027) is mounted on the mounting position (3022) of the adjacent rotating assembly (302); The two adjacent contact cards (3027) form an angle between each other, and the two adjacent hinge cylinders (3025) form an angle between each other. The lower adjacent connector (3021) is snapped into the lower end of the upper rotating shaft (3023), and the lowermost rotating shaft (3023) is mounted on the conical head (2013) by a bearing.

10. A method for monitoring surface rise and fall in a gas storage facility, characterized in that, The monitoring method includes the following steps: S1: Drill several monitoring holes on the surface of the gas storage facility where monitoring is required, and drill several comparison holes on the surface outside the gas storage facility. Place the detection device (200) as described in any one of claims 6 to 9 into the monitoring holes and the comparison holes respectively. S2: Pass the pry bar through the clearance notch (2015) on the rotating seat (2012) and the drive hole (3011) on the drive head (301). Rotate the pry bar to drive the drive head (301) to rotate. The drive head (301) drives several rotating components (302) to rotate, thereby abutting the card (3027) to rotate and abutting the rotating blade (3026). This causes the outer edges of several rotating blades (3026) to rotate and pass through several opening slots (2014) on the side wall of the mounting cylinder (2011), thereby rotating and fixing them in the stratum below the ground surface, thus fixing the detection device. S3: By adjusting the telescopic rod (103), use a level and a height gauge to place the force-sensitive devices (100) in the monitoring hole and the comparison hole at the same height, and connect the force-sensitive devices (100) in the monitoring hole and the comparison hole in pairs through metal wires (1043), and the metal wires (1043) do not interfere with each other. S4: By detecting the resistance change of the force-sensitive component (1042) inside the monitoring hole and the hole, the electrical device can convert the resistance change into torque. When the resistance component (1042) inside the monitoring hole changes to a positive value, it indicates that the ground surface of the monitoring point has moved upward. Conversely, a negative value indicates that the ground surface of the monitoring point has subsided. S5: Add the torque values ​​converted from the resistance changes of the resistance components (1042) in the monitoring hole and the comparison hole. The sum is the displacement of the gas storage surface change, where positive and negative values ​​indicate the direction of displacement.

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