Air pressure detection device and aquifer air pressure detection method

Abstract

The invention discloses an air pressure detection device and an aquifer air pressure detection method, and relates to the field of air pressure detection equipment. The device comprises an intelligent controller, an air pressure detection sensor and a wire, the air pressure detection sensor is connected with the intelligent controller through the wire, the device further comprises a winding and unwinding mechanism and an unwinding length detection mechanism, the winding and unwinding mechanism can wind or unwind the wire, and the unwinding length detection mechanism can detect the unwinding length of the wire. By detecting the air pressure of the underground aquifer, data support is provided for inflation construction of the underground aquifer, the inflation amount can be accurately controlled, and the situation that the underground aquifer environment is damaged due to disturbance of an underground water flow field or gas channeling caused by too large air pressure of the aquifer is prevented; and through cooperation of an air pressure detection sensor, a linear velocity sensor, an intelligent controller and a winding and unwinding mechanism, air pressures of different depths in the underground aquifer can be detected, and depth information can be accurately matched with air pressure information, so that the air pressure detection precision of the underground aquifer can be improved.

Description

Technical Field

[0001] The present invention belongs to the field of air pressure detection devices, and more particularly, to an air pressure detection device and an aquifer air pressure detection method. Background Art

[0002] An underground aquifer refers to a rock layer with water permeability and water supply capacity below the groundwater level. In the prior art, by inflating the underground aquifer, functions such as promoting oxidation reactions to remove pollutants, accelerating the degradation of organic pollutants, assisting aquifer transformation and plugging, and assisting oil and gas exploitation can be achieved. However, during the inflation process, as well as before and after inflation, it is necessary to detect the air pressure of the underground aquifer to evaluate whether the aquifer can be inflated and the inflation volume, and at the same time prevent the air pressure in the aquifer from being too large during inflation, which may disturb the groundwater flow field or cause gas channeling, thereby damaging the underground aquifer environment. Therefore, there is an urgent need for an air pressure detection device and an aquifer air pressure detection method to detect the air pressure of the underground aquifer. Summary of the Invention

[0003] In view of the problems in the related art, the present invention provides an air pressure detection device and an aquifer air pressure detection method to overcome the above-mentioned technical problems existing in the prior related art.

[0004] To solve the above technical problems, the present invention is realized through the following technical solutions: The present invention provides an air pressure detection device, which includes an intelligent controller, an air pressure detection sensor, and a wire. The air pressure detection sensor is connected to the intelligent controller through the wire. The device further includes a winding and unwinding mechanism and a unwinding length detection mechanism. The winding and unwinding mechanism can wind or unwind the wire to adjust the downward extension depth of the air pressure detection sensor at one end of the wire, and the unwinding length detection mechanism can detect the unwinding length of the wire to determine the downward extension depth of the air pressure detection sensor. The unwinding length detection mechanism includes a guide wheel and a linear velocity sensor. The guide wheel can guide and limit the wire, and the guide wheel can rotate under the frictional resistance during the winding and unwinding of the wire. The linear velocity sensor can detect the rotational linear velocity of the guide wheel and transmit the detection information to the intelligent controller.

[0005] Furthermore, the device further includes a column. The bottom end of the column is fixedly installed with a base, and a detection box is fixedly installed on the column. The intelligent controller, the winding and unwinding mechanism, and the unwinding length detection mechanism are all installed inside the detection box, and a box door is installed on the front side of the detection box.

[0006] Furthermore, a solar power generation panel is fixedly installed at the top end of the column, and a storage battery electrically connected to the solar power generation panel is fixedly installed inside the detection box. The storage battery is electrically connected to the intelligent controller, the winding and unwinding mechanism, and the unwinding length detection mechanism respectively.

[0007] Furthermore, the reeling and winding mechanism comprises a bracket, on which a wire drum is rotatably mounted, and a motor drivingly connected to one end of the wire drum is fixedly mounted on a side wall of the bracket, and the wire is wound on the wire drum.

[0008] Furthermore, a support is fixedly installed on one side of the bracket, a reciprocating screw is rotatably installed on the support, an optical axis guide rail located on one side of the reciprocating screw is also fixedly installed on the support, a guide block is threadedly installed on the reciprocating screw, one end of the guide block is slidably installed on the optical axis guide rail, a wire hole for the wire to pass through is opened on the guide block, the end of the reciprocating screw is connected to the end of the wire drum through a transmission unit, so that when the wire drum rotates, the reciprocating screw can be driven to rotate synchronously through the transmission unit.

[0009] Furthermore, the transmission unit includes a transmission wheel and a driven wheel, the transmission wheel is fixedly installed at the end of the wire drum, the driven wheel is fixedly installed at the end of the reciprocating screw rod, and the transmission wheel and the driven wheel are connected by a transmission belt.

[0010] Furthermore, two guide wheels are provided, and the two guide wheels are arranged in parallel to clamp and guide the wire to a limit position, and support plates are rotatably installed at both ends of the two guide wheels. The linear speed sensor is fixedly installed on the support plate, and the detection end of the linear speed sensor is facing the end of the guide wheel, and an opening and closing adjustment component that can adjust the distance between the two guide wheels is installed under the guide wheel.

[0011] Furthermore, the opening and closing adjustment assembly includes a guide rail, and a bidirectional screw rod is rotatably installed on both sides of the guide rail, and both ends of the bidirectional screw rod are provided with symmetrically distributed external threads, and both ends of the bidirectional screw rod are installed with sliding seats through external thread transmission, and the sliding seat is slidably installed on the guide rail, and the support plates are fixedly installed on the top of the corresponding sliding seat, and the ends of the two bidirectional screw rods are fixedly installed with synchronous wheels, and the two synchronous wheels are connected by synchronous belt transmission, and the ends of the two-way screw rods are also fixedly installed with handles.

[0012] Furthermore, a ratchet is fixedly mounted on the end of the guide wheel, one end of the ratchet is rotatably mounted on the movable friction block, a locking assembly is also mounted inside the ratchet which can be unidirectionally locked with the movable friction block during winding, and a fixed friction block abutting against the movable friction block is fixedly mounted on the support plate; The locking assembly comprises a ratchet and a ring sleeve, wherein the ratchet is fixedly mounted on the inner ring of the ratchet wheel, the ring sleeve is fixedly mounted on the inner side surface of the movable friction block, and a pawl which can be unidirectionally engaged with the ratchet is rotatably mounted on the outer ring of the ring sleeve.

[0013] The present invention discloses a method for detecting air pressure of an aquifer, and the specific steps are as follows: First, the wire is unreeled through the unreeling and reeling mechanism so that the air pressure detection sensor can be continuously lowered along the detection well communicating with the underground aquifer. At the same time, the guide wheel can guide and limit the wire being unreeled downward, and the guide wheel can rotate under the frictional resistance during the wire unreeling. The linear velocity sensor can detect the rotational linear velocity of the guide wheel and transmit the detection information to the intelligent controller. The intelligent controller is set with an unreeling length calculation formula. Since the diameter of the guide wheel is known data, the intelligent controller can calculate the lowering length of the wire based on the rotational linear velocity and the diameter of the guide wheel, thereby obtaining the lowering depth of the air pressure detection sensor. And the air pressure detection sensor continuously detects the air pressure during the lowering process to detect the air pressure information at different depths.

[0014] The present invention has the following beneficial effects: 1. In the present invention, the air pressure detection sensor is connected to the intelligent controller through a wire, and at the same time, an unreeling and reeling mechanism capable of unreeling and reeling the wire is provided. By unreeling the wire through the unreeling and reeling mechanism, the wire can be gradually extended, so that the wire drives the air pressure detection sensor to extend downward, enabling the air pressure sensor to be lowered into the underground aquifer, thereby detecting the air pressure of the underground aquifer, and further providing data support for the air injection construction of the underground aquifer, which is beneficial to accurately controlling the air injection volume and preventing the air pressure in the aquifer from being too large to disturb the underground water flow field or cause gas channeling to damage the underground aquifer environment.

[0015] 2. In the present invention, the guide wheel can guide and limit the wire being unreeled downward, improving the stability of the wire and the air pressure detection sensor during lowering. And the guide wheel can rotate under the frictional resistance during the wire unreeling. The linear velocity sensor can detect the rotational linear velocity of the guide wheel, and the intelligent controller can calculate the lowering length of the wire based on the rotational linear velocity and the diameter of the guide wheel, thereby obtaining the lowering depth of the air pressure detection sensor. Thus, through the cooperation of the air pressure detection sensor, the linear velocity sensor, and the intelligent controller, the air pressure at different depths in the underground aquifer can be detected, and the depth information and the air pressure information can be accurately matched, thereby improving the air pressure detection accuracy of the underground aquifer, which is beneficial to accurately assisting the air injection operation of the underground aquifer. And during the wire reeling process, the guide wheel can cooperate with the ratchet and the friction block to tighten the guide, so that the wire can be tightly wound around the unreeling and reeling mechanism, thereby improving the tightness of the wire reeling, and further increasing the length of the wire wound on the unreeling and reeling mechanism, which is beneficial to extending the wire length to be applicable to the air pressure detection of deeper underground aquifers.

[0016] Of course, it is not necessary for any product implementing the present invention to achieve all the above-mentioned advantages simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions of the embodiments of the invention, the following will briefly introduce the accompanying drawings required for the description of the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0018] Figure 1 One of the three-dimensional structure diagrams of the air pressure detection device of the present invention; Figure 2 Another three-dimensional structure diagram of the air pressure detection device of the present invention; Figure 3 The third three-dimensional structure diagram of the air pressure detection device of the present invention; Figure 4 The fourth three-dimensional structure diagram of the air pressure detection device of the present invention; Figure 5 The fifth three-dimensional structure diagram of the air pressure detection device of the present invention; Figure 6 The sixth three-dimensional structure diagram of the air pressure detection device of the present invention; Figure 7 For the present invention Figure 6 Partial enlarged structure diagram at position A of the present invention; Figure 8 For the present invention Figure 6 Partial enlarged structure diagram at position B of the present invention; Figure 9 The seventh three-dimensional structure diagram of the air pressure detection device of the present invention; Figure 10 For the present invention Figure 9 Partial enlarged structure diagram at position C of the present invention; Figure 11 The eighth three-dimensional structure diagram of the air pressure detection device of the present invention; Figure 12 For the present invention Figure 11 Partial enlarged structure diagram at position D of the present invention.

[0019] In the figure: 1. Detection box; 11. Box door; 2. Column; 3. Base; 4. Solar power panel; 5. Wire; 6. Air pressure detection sensor; 7. Intelligent controller; 8. Rewinding and unreeling mechanism; 81. Bracket; 82. Spool; 83. Motor; 84. Guide block; 85. Wire hole; 86. Support; 87. Reciprocating lead screw; 88. Optical axis guide rail; 89. Driven wheel; 810. Driving wheel; 811. Transmission belt; 9. Unreeling length detection mechanism; 91. Guide wheel; 92. Support plate; 93. Linear velocity sensor; 94. Sliding seat; 95. Bidirectional lead screw; 96. Guide rail; 97. Synchronous wheel; 98. Synchronous belt; 99. Handle; 910. Ratchet; 911. Movable friction block; 912. Fixed friction block; 913. Ratchet teeth; 914. Ring sleeve; 915. Pawl. Specific embodiments

[0020] The following will clearly and completely describe the technical solutions in the embodiments of the invention with reference to the accompanying drawings in the embodiments of the invention. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the invention.

[0021] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "top", "middle", "inner", etc. indicating the orientation or position relationship are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the invention.

[0022] Embodiment 1

[0023] Please refer to Figures 1 - 7 As shown, the present invention is a kind of air pressure detection device, including an intelligent controller 7, an air pressure detection sensor 6 and a wire 5. The air pressure detection sensor 6 is connected to the intelligent controller 7 through the wire 5. It also includes a rewinding and unreeling mechanism 8 and an unreeling length detection mechanism 9. The rewinding and unreeling mechanism 8 can wind or unwind the wire 5 to adjust the downward extension depth of the air pressure detection sensor 6 at one end of the wire 5. The unreeling length detection mechanism 9 can detect the unreeling length of the wire 5 to determine the downward extension depth of the air pressure detection sensor 6. The unreeling length detection mechanism 9 includes a guide wheel 91 and a linear velocity sensor 93. The guide wheel 91 can guide and limit the wire 5, and the guide wheel 91 can rotate under the action of the frictional resistance when the wire 5 is rewound and unreeled. The linear velocity sensor 93 can detect the rotational linear velocity of the guide wheel 91 and transmit the detection information to the intelligent controller 7; Specifically, when conducting the air pressure detection of the aquifer, first, the wire winding and unwinding mechanism 8 unwinds the wire 5 so that the air pressure detection sensor 6 can continuously descend along the detection well connected to the underground aquifer. At the same time, the guide wheel 91 can guide and limit the descending wire 5, and the guide wheel 91 can rotate under the frictional resistance during the unwinding of the wire 5. The linear velocity sensor 93 can detect the rotational linear velocity of the guide wheel 91 and transmit the detection information to the intelligent controller 7. The intelligent controller 7 is set with a wire unwinding length calculation formula. Since the diameter of the guide wheel 91 is known data, the intelligent controller 7 can calculate the descending length of the wire 5 based on the rotational linear velocity and the diameter of the guide wheel 91, thereby obtaining the descending depth of the air pressure detection sensor 6. And the air pressure detection sensor 6 continuously detects the air pressure during the descending process to detect the air pressure information at different depths; By detecting the air pressure of the underground aquifer, it can provide data support for the air injection construction of the underground aquifer, which is conducive to accurately controlling the air injection volume, preventing the air pressure in the aquifer from being too large to disturb the underground water flow field or causing gas channeling to damage the underground aquifer environment; and through the cooperation of the air pressure detection sensor 6, the linear velocity sensor 93, the intelligent controller 7, and the wire winding and unwinding mechanism 8, the air pressure at different depths in the underground aquifer can be detected, and the depth information can be accurately matched with the air pressure information, thereby improving the air pressure detection accuracy of the underground aquifer and providing more accurate data support for the air injection construction of the underground aquifer; Furthermore, a counterweight rod is installed at one end of the wire 5 connected to the air pressure detection sensor 6, so that when the wire 5 is unwound, the counterweight rod can drive the air pressure detection sensor 6 to descend stably for air pressure detection.

[0024] Embodiment 2

[0025] Please refer to Figures 1 - 5 As shown, the difference between this embodiment and the above embodiment is that it further includes a column 2. The bottom end of the column 2 is fixedly installed with a base 3, and a detection box 1 is fixedly installed on the column 2. The intelligent controller 7, the wire winding and unwinding mechanism 8, and the wire unwinding length detection mechanism 9 are all installed inside the detection box 1, and a box door 11 is installed on the front side of the detection box 1; the top end of the column 2 is fixedly installed with a solar power generation panel 4, and a storage battery electrically connected to the solar power generation panel 4 is fixedly installed inside the detection box 1. The storage battery is electrically connected to the intelligent controller 7, the wire winding and unwinding mechanism 8, and the wire unwinding length detection mechanism 9 respectively; Powering each mechanism in the detection device with the green energy of the solar power generation panel 4 can not only save energy and reduce emissions but also facilitate the use of the detection device in places where the mains power cannot be connected in the wild. By installing the intelligent controller 7, the wire winding and unwinding mechanism 8, and the wire unwinding length detection mechanism 9 inside the detection box 1, the detection box 1 can protect the intelligent controller 7, the wire winding and unwinding mechanism 8, and the wire unwinding length detection mechanism 9, facilitating the installation and use of the detection device outdoors.

[0026] Embodiment III

[0027] Please refer to Figure 2 , Figure 6 , Figure 8 , Figure 9 As shown in, the difference between this embodiment and the above embodiments is that the winding and unwinding mechanism 8 includes a bracket 81, on which a wire reel 82 is rotatably installed. A motor 83 is also fixedly installed on the side wall of the bracket 81 and is drivingly connected to one end of the wire reel 82. The wire 5 is wound around the wire reel 82. A support 86 is fixedly installed on one side of the bracket 81. A reciprocating lead screw 87 is rotatably installed on the support 86. A smooth shaft guide 88 is also fixedly installed on the support 86 on one side of the reciprocating lead screw 87. A guide block 84 is installed on the reciprocating lead screw 87 by screw drive. One end of the guide block 84 is slidably installed on the smooth shaft guide 88. A wire hole 85 for the wire 5 to pass through is provided on the guide block 84. A transmission unit is drivingly connected between the end of the reciprocating lead screw 87 and the end of the wire reel 82, so that when the wire reel 82 rotates, the reciprocating lead screw 87 can be driven to rotate synchronously through the transmission unit. The transmission unit includes a driving wheel 810 and a driven wheel 89. The driving wheel 810 is fixedly installed at the end of the wire reel 82, and the driven wheel 89 is fixedly installed at the end of the reciprocating lead screw 87. The driving wheel 810 and the driven wheel 89 are drivingly connected by a transmission belt 811; During air pressure detection, the motor 83 is driven to rotate the wire reel 82 to unwind, so that the wire 5 is gradually unwound and elongated. At this time, the wire 5 is pulled downward under the action of the gravity of the end air pressure detection sensor 6 and the counterweight rod, so that the air pressure detection sensor 6 and the counterweight rod can continuously move downward to detect the air pressure of the underground aquifer. When it is necessary to adjust and reduce the detection depth or wind up and store the wire 5, the motor 83 drives the wire reel 82 to rotate in the reverse direction to wind up. At this time, the wire reel 82 drives the reciprocating lead screw 87 to rotate through the transmission cooperation of the driving wheel 810, the driven wheel 89 and the transmission belt 811. When the reciprocating lead screw 87 rotates, it can drive the guide block 84 to reciprocate along the reciprocating lead screw 87 and the smooth shaft guide 88 through screw drive, so that the guide block 84 drives the wire 5 to reciprocate along the wire reel 82, making the wire 5 evenly wound on the wire reel 82, improving the winding uniformity of the wire 5 on the wire reel 82, and at the same time being beneficial to increasing the winding length of the wire 5 on the wire reel 82, thereby being beneficial to increasing the overall length of the wire 5 and facilitating the air pressure detection of deeper underground aquifers.

[0028] Embodiment IV

[0029] Please refer to Figures 2 - 7As shown, the difference between this embodiment and the above embodiment is that two guide wheels 91 are provided, and the two guide wheels 91 are arranged in parallel to clamp the wire 5 for guiding and limiting, and support plates 92 are rotatably installed at both ends of the two guide wheels 91, and a linear speed sensor 93 is fixedly installed on the support plate 92, and the detection end of the linear speed sensor 93 is facing the end of the guide wheel 91, and an opening and closing adjustment component capable of adjusting the spacing between the two guide wheels 91 is installed below the guide wheel 91; the opening and closing adjustment component includes a guide rail 96, and a bidirectional screw rod 95 is rotatably installed on both sides of the guide rail 96, and symmetrically distributed external threads are arranged at both ends of the bidirectional screw rod 95, and sliding seats 94 are installed at both ends of the bidirectional screw rod 95 through external threaded transmission, and the sliding seat 94 is slidably installed on the guide rail 96, and the support plates 92 are fixedly installed on the top of the corresponding sliding seat 94, and synchronous wheels 97 are fixedly installed at the ends of the two bidirectional screw rods 95, and the two synchronous wheels 97 are connected by a synchronous belt 98 for transmission, and a handle 99 is also fixedly installed at the end of the bidirectional screw rod 95; The two guide wheels 91 clamp and limit the wire 5, which can improve the limiting effect of the wire 5, so that the wire 5 can be stably lowered or pulled up when winding and unwinding, and the two guide wheels 91 cooperate to clamp the wire 5, which can improve the friction resistance between the guide wheels 91 and the wire 5, so as to ensure that the friction resistance when the wire 5 moves can drive the guide wheels 91 to rotate, thereby improving the detection accuracy of the winding and unwinding length of the wire 5, and the spacing between the two guide wheels 91 can be adjusted by the opening and closing adjustment component. According to the diameter of the wire 5, the spacing between the two guide wheels 91 can be adjusted accordingly, so that the clamping force of the two guide wheels 91 on the wire 5 is in a suitable state, preventing the guide wheels 91 from clamping the wire 5 too tightly and affecting the normal movement of the wire 5, and at the same time preventing the wire 5 from being clamped too loosely, resulting in too small friction resistance between the wire 5 and the guide wheels 91, so that the guide wheels 91 cannot be driven to rotate synchronously by friction resistance when the wire 5 moves; Specifically, when adjusting the gap, the handle 99 is rotated to cause the handle 99 to drive the bidirectional screw 95 to rotate. At the same time, the bidirectional screw 95 drives another bidirectional screw 95 to rotate synchronously through the transmission of the synchronous wheel 97 and the synchronous belt 98. When the bidirectional screw 95 rotates, the sliding seats 94 at both ends are driven to move toward each other or move in the opposite direction and open along the guide rail 96 through the external threads symmetrically distributed at both ends, and then the two guide wheels 91 are driven to move toward each other or move in the opposite direction and open through the two groups of sliding seats 94, thereby adjusting the gap between the two guide wheels 91.

[0030] Embodiment 5

[0031] See also Figures 9 - 12As shown in the figure, the difference between this embodiment and the above embodiment is that a ratchet wheel 910 is fixedly installed at the end of the guide wheel 91. One end of the ratchet wheel 910 is rotatably installed on the movable friction block 911. A locking component that can be unidirectionally engaged and locked with the movable friction block 911 during winding is also installed inside the ratchet wheel 910. A fixed friction block 912 that abuts against the movable friction block 911 is fixedly installed on the support plate 92; the locking component includes a ratchet tooth 913 and a collar 914. The ratchet tooth 913 is fixedly installed on the inner ring of the ratchet wheel 910, and the collar 914 is fixedly installed on the inner side surface of the movable friction block 911. A ratchet pawl 915 that can be unidirectionally engaged with the ratchet tooth 913 is rotatably installed on the outer ring of the collar 914; Among them, when the wire 5 is paid out and lowered to drive the guide wheel 91 to rotate, the guide wheel 91 drives the ratchet wheel 910 to rotate. At this time, the ratchet tooth 913 inside the ratchet wheel 910 can rotate past the ratchet pawl 915, so that the ratchet wheel 910 and the movable friction block 911 are in a non-locked state. Therefore, the frictional resistance between the movable friction block 911 and the fixed friction block 912 will not hinder the rotational guidance of the guide wheel 91, so that the wire 5 can be normally lowered; When the wire 5 is wound up and pulled to drive the guide wheel 91 to rotate in the reverse direction, the guide wheel 91 drives the ratchet wheel 910 and the ratchet tooth 913 to rotate in the reverse direction. At this time, the ratchet tooth 913 is engaged and locked with the ratchet pawl 915, so that when the ratchet wheel 910 rotates, it drives the collar 914 and the movable friction block 911 to rotate synchronously, causing the movable friction block 911 to rotate relative to the fixed friction block 912. Thus, the guide wheel 91 is limited by the frictional resistance when the movable friction block 911 rotates relative to the fixed friction block 912, the frictional resistance when the guide wheel 91 rotates is increased, and then the wire 5 is tensioned by the clamping of the two guide wheels 91, so that the wire 5 can be tightly wound on the wire reel 82, thereby improving the tightness of the winding of the wire 5, and further increasing the length of the wire 5 wound on the wire reel 82, which is beneficial to extending the overall length of the wire 5 to be applicable to the air pressure detection of deep underground aquifers; Furthermore, the frictional resistance between the movable friction block 911 and the fixed friction block 912 is less than the frictional resistance between the wire 5 and the guide wheel 91. When the wire 5 is wound up and pulled, it can overcome the frictional resistance between the movable friction block 911 and the fixed friction block 912 to drive the guide wheel 91 to rotate. Then, the linear velocity sensor 93 detects the rotational linear velocity of the guide wheel 91, so that the winding length of the wire 5 can also be detected when the wire 5 is wound, to determine the remaining payout length of the wire 5 and the lowering depth of the air pressure detection sensor 6, so as to accurately detect the air pressure at different depths.

[0032] Embodiment Six

[0033] This embodiment discloses a method for detecting the air pressure of an aquifer. The specific steps are as follows: First, the wire winding and unwinding mechanism 8 unwinds the wire 5 so that the air pressure detection sensor 6 can be continuously lowered along the detection well communicating with the underground aquifer. At the same time, the guide wheel 91 can guide and limit the unwound and descending wire 5, and the guide wheel 91 can rotate under the action of the frictional resistance during the unwinding of the wire 5. The linear velocity sensor 93 can detect the rotational linear velocity of the guide wheel 91 and transmit the detection information to the intelligent controller 7. The intelligent controller 7 is set with a wire unwinding length calculation formula. Since the diameter of the guide wheel 91 is known data, the intelligent controller 7 can calculate the descending length of the wire 5 based on the rotational linear velocity and the diameter of the guide wheel 91, thereby obtaining the descending depth of the air pressure detection sensor 6. Moreover, the air pressure detection sensor 6 continuously detects the air pressure during the descending process to detect the air pressure information at different depths.

[0034] In the description of this specification, the descriptions referring to the terms "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0035] The preferred embodiments of the invention disclosed above are only used to help explain the invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific embodiments described. Obviously, many modifications and variations can be made according to the content of this specification. These embodiments are selected and specifically described in this specification to better explain the principle and practical application of the invention, so that those skilled in the art can understand and utilize the invention well.

Claims

1. A barometric pressure detection device, comprising an intelligent controller, a barometric pressure detection sensor, and a wire, wherein the barometric pressure detection sensor is connected to the intelligent controller through the wire, and is characterized in that: It further includes a rewinding and unwinding mechanism and an unwinding length detection mechanism. The rewinding and unwinding mechanism can wind or unwind the wire to adjust the downward extension depth of the air pressure detection sensor at one end of the wire. The unwinding length detection mechanism can detect the unwinding length of the wire to determine the downward extension depth of the air pressure detection sensor; The unwinding length detection mechanism includes a guide wheel and a linear velocity sensor. The guide wheel can guide and limit the wire, and the guide wheel can rotate under the frictional resistance during the rewinding and unwinding of the wire. The linear velocity sensor can detect the rotational linear velocity of the guide wheel and transmit the detection information to the intelligent controller.

2. The air pressure detection device according to claim 1, wherein: It further includes a column. A base is fixedly installed at the bottom end of the column, and a detection box is fixedly installed on the column. The intelligent controller, the rewinding and unwinding mechanism, and the unwinding length detection mechanism are all installed inside the detection box, and a box door is installed on the front side of the detection box.

3. The air pressure detection device according to claim 2, characterized in that: A solar panel is fixedly installed at the top end of the column, and a storage battery electrically connected to the solar panel is fixedly installed inside the detection box. The storage battery is electrically connected to the intelligent controller, the rewinding and unwinding mechanism, and the unwinding length detection mechanism respectively.

4. A pneumatic detection device according to claim 2, characterized in that: The rewinding and unwinding mechanism includes a bracket. A wire reel is rotatably installed on the bracket, and a motor drivingly connected to one end of the wire reel is also fixedly installed on the side wall of the bracket. The wire is wound around the wire reel.

5. The air pressure detection device according to claim 4, characterized in that: A support is fixedly installed on one side of the bracket. A reciprocating lead screw is rotatably installed on the support, and an optical axis guide rail is also fixedly installed on the support on one side of the reciprocating lead screw. A guide block is threadedly installed on the reciprocating lead screw, and one end of the guide block is slidably installed on the optical axis guide rail. A wire hole for the wire to pass through is formed in the guide block. A transmission unit is provided between the end of the reciprocating lead screw and the end of the wire reel, so that when the wire reel rotates, the reciprocating lead screw can be driven to rotate synchronously through the transmission unit.

6. The air pressure detection device according to claim 5, characterized in that: The transmission unit includes a driving wheel and a driven wheel. The driving wheel is fixedly installed at the end of the wire reel, and the driven wheel is fixedly installed at the end of the reciprocating lead screw. The driving wheel and the driven wheel are drivingly connected by a transmission belt.

7. The air pressure detection device according to claim 1, wherein: There are two guide wheels. The two guide wheels are arranged in parallel to clamp and guide the wire. Both ends of the two guide wheels are rotatably installed with support plates. The linear velocity sensor is fixedly installed on the support plate, and the detection end of the linear velocity sensor faces the end of the guide wheel. An opening and closing adjustment component for adjusting the distance between the two guide wheels is installed below the guide wheels.

8. The air pressure detection device according to claim 7, characterized in that: The opening and closing adjustment component includes a guide rail. A bidirectional lead screw is rotatably installed on both sides of the guide rail. Symmetrically distributed external threads are provided at both ends of the bidirectional lead screw, and sliding seats are threadedly installed at both ends of the bidirectional lead screw through the external threads. The sliding seats are slidably installed on the guide rail. The support plates are fixedly installed at the top ends of the corresponding sliding seats. Synchronous wheels are fixedly installed at the ends of the two bidirectional lead screws. The two synchronous wheels are drivingly connected by a synchronous belt, and a handle is also fixedly installed at the end of the bidirectional lead screw.

9. The air pressure detection device according to claim 7, characterized in that: A ratchet wheel is fixedly installed at the end of the guide wheel. One end of the ratchet wheel is rotatably installed on the movable friction block. A locking assembly is also installed inside the ratchet wheel, which can be unidirectionally clamped and locked with the movable friction block during winding. A fixed friction block abutting against the movable friction block is fixedly installed on the support plate. The locking assembly includes a ratchet tooth and a collar. The ratchet tooth is fixedly installed on the inner ring of the ratchet wheel. The collar is fixedly installed on the inner side surface of the movable friction block. A ratchet pawl that can be unidirectionally clamped with the ratchet tooth is rotatably installed on the outer ring of the collar.

10. A method for detecting the air pressure of an aquifer, which uses an air pressure detection device according to any one of claims 1-9, characterized in that, The specific steps are as follows: First, the wire is unreeled through the rewinding and unreeling mechanism so that the air pressure detection sensor can continuously descend along the detection well communicating with the underground aquifer. At the same time, the guide wheel can guide and limit the unreeled and descending wire. The guide wheel can rotate under the action of the frictional resistance during wire unreeling. The linear velocity sensor can detect the rotational linear velocity of the guide wheel and transmit the detection information to the intelligent controller. A wire unreeling length calculation formula is set in the intelligent controller. Since the diameter of the guide wheel is known data, the intelligent controller can calculate the descending length of the wire based on the rotational linear velocity and the diameter of the guide wheel, thereby obtaining the descending depth of the air pressure detection sensor. The air pressure detection sensor continuously detects the air pressure during the descending process to detect air pressure information at different depths.

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