Steel pipe gap detection device for geological exploration

Abstract

The invention relates to the technical field of steel pipe gap detection, and discloses a geological prospecting steel pipe gap detection device, which comprises a detection platform and a detection head for detecting a welding seam, and is characterized in that the detection platform is provided with a cleaning assembly for cleaning the welding seam, and the cleaning assembly comprises a hollow gas storage tank; the interior of the gas storage tank is divided into a main gas cavity and a plurality of branch gas cavities communicated with the main gas cavity, a first piston valve is slidably connected into the main gas cavity, a second piston valve is slidably connected into the branch gas cavities, and a cleaning rod is connected to the end, away from the first piston valve, of the second piston valve and penetrates through the gas storage tank; one end of the cleaning rod away from the second piston valve is connected with a cleaning brush. In this way, in the cleaning operation process, the protruding or sinking conditions of different degrees at the weld joint can be flexibly handled, and even if the surface of the uneven complex weld joint is faced, it can be ensured that even if the surface of the uneven complex weld joint is applied, uniform and stable pressure can be applied to each independent cleaning brush.

Description

Technical Field

[0001] The present invention relates to the technical field of steel pipe gap detection, and specifically to a steel pipe gap detection device for geological exploration. Background Technique

[0002] In the field of geological exploration, steel pipes, as key components in drilling operations, are widely used in oil and gas exploration, geological structure research, mineral resource extraction, etc., and need to withstand complex mechanical actions and the influence of harsh geological environments.

[0003] In the process of steel pipe manufacturing, welding is a key link, and many gap problems often occur at the welds. The quality of the welding process directly affects the overall quality and performance of the steel pipe. From a further perspective of guiding the welding process, on the one hand, it is necessary to deeply analyze the specific reasons for the generation of gaps during welding, such as improper welding parameter settings, poor quality of welding materials, unstable welding environment, etc. On the other hand, advanced welding technologies and equipment can be used to improve the welding quality and reduce the generation of gaps. At the same time, after welding, for the new steel pipe gap detection device for geological exploration, it should be able to perform more accurate and efficient detection on the welded parts in order to timely discover the hidden gap defects during the welding process.

[0004] At present, the weld quality after welding two steel pipes is very crucial. The traditional detection first sprays coupling water on the surface of the steel pipe for cleaning, but this method is not sufficient for cleaning. Pollutants such as scale, oil stains, rust, dust, and processing debris attached to the surface of the steel pipe during processing, transportation, and storage are difficult to be completely removed by the coupling water. Scale with tight bonding, high-viscosity oil stains, and deeply embedded rust will still remain. Moreover, in the gaps, grooves, and dead corners of complex welding structures, the coupling water cannot clean sufficiently, which not only interferes with the signals of the detection equipment, reduces the detection sensitivity and accuracy, but also forms a detection blind area, posing potential safety hazards to the evaluation of weld quality; therefore, it does not meet the existing requirements, and for this reason, we propose a steel pipe gap detection device for geological exploration. Summary of the Invention

[0005] The present invention provides a steel pipe gap detection device for geological exploration, which has the beneficial effect of automatically cleaning the steel pipe before detecting the weld seam of the steel pipe, and solves the problem that the weld quality after welding two steel pipes is very crucial in the above-mentioned background technology. The traditional detection first sprays coupling water on the surface of the steel pipe for cleaning, but this method is not sufficient for cleaning. Pollutants such as mill scale, oil stain, rust, dust and processing debris attached to the surface of the steel pipe during processing, transportation and storage are difficult to be completely removed by coupling water. Pollutants such as mill scale with tight combination, high-viscosity oil stain and deeply embedded rust will still remain. Moreover, in the gaps, grooves and dead corners of complex welding structures, the coupling water cannot be fully cleaned, which not only interferes with the signal of the detection device, reduces the detection sensitivity and accuracy, but also forms a detection blind area, posing a potential safety hazard to the evaluation of weld quality.

[0006] The present invention provides the following technical solutions: A steel pipe gap detection device for geological exploration, including a detection platform and a detection head for detecting the weld seam. A cleaning component for cleaning the weld seam is installed on the detection platform. The cleaning component includes a hollow air storage tank. The interior of the air storage tank is divided into a main air chamber and several sub-air chambers connected to the main air chamber. A first piston valve is slidably connected in the main air chamber, and a second piston valve is slidably connected in the sub-air chamber. One end of the second piston valve away from the first piston valve is connected to a cleaning rod, and the cleaning rod passes through the air storage tank. One end of the cleaning rod away from the second piston valve is connected to a cleaning brush.

[0007] As an optional solution of the steel pipe gap detection device for geological exploration of the present invention, wherein: A slot is opened on one side of the cleaning brush, a block adapted to the slot is installed on the other side of the cleaning brush, and a first spring is installed between the slot and the block.

[0008] As an optional solution of the steel pipe gap detection device for geological exploration of the present invention, wherein: The cleaning component further includes a fixed cylinder. A connecting cylinder is arranged inside the fixed cylinder. A track groove for guiding the movement direction of the cleaning brush is opened inside the connecting cylinder. A driving gear is rotatably installed on the side of the fixed cylinder.

[0009] As an optional solution of the steel pipe gap detection device for geological exploration of the present invention, wherein: A circular chute is opened on the side wall of the fixed cylinder. Symmetrically installed on one side of the driving gear are sliding columns adapted to the circular chute. A cylinder is installed on the other side of the driving gear. A round rod is slidably installed inside the cylinder. A second spring is installed between the round rod and the cylinder. A placing plate is installed at the end of the round rod.

[0010] As an alternative solution for the steel pipe gap detection device used in geological exploration of the present invention, wherein: the detection head is installed on one of the placement plates, one end of the first piston valve away from the second piston valve is connected to an electric push rod, the electric push rod is installed on the other placement plate, the air storage tank is installed on the placement plate away from the electric push rod, a sliding column is installed on the bottom side of the placement plate, and the sliding column is slidably fitted inside the track groove.

[0011] As an alternative solution for the steel pipe gap detection device used in geological exploration of the present invention, wherein: an activity groove is provided on the inner wall of the fixed cylinder, an activity block adapted to the activity groove is provided on the side of the connecting cylinder, bolts are symmetrically installed on the activity block, threaded holes adapted to the bolts are provided on the outer side of the fixed cylinder, a rocker is installed on the side of the connecting cylinder, and the connecting cylinder is rotatably fitted inside the fixed cylinder.

[0012] As an alternative solution for the steel pipe gap detection device used in geological exploration of the present invention, wherein: a driving motor is installed on the side of the fixed cylinder, a first gear is installed on the rotating shaft of the driving motor, and the first gear meshes with the driving gear.

[0013] As an alternative solution for the steel pipe gap detection device used in geological exploration of the present invention, wherein: the fixed cylinder is installed on the detection platform through a support rod, a sliding track is installed on the upper side of the detection platform, a first support frame for supporting the steel pipe is installed on the detection platform, an electric slider is installed on the bottom side of the first support frame, the electric slider is slidably fitted with the sliding track, a clamping box is installed on the first support frame, a through hole for the steel pipe to penetrate is provided inside the clamping box, a clamping block is installed inside the through hole, a knob is installed on the upper side of the clamping box, the knob is threadedly connected to the inner wall of the clamping box, and the bottom end of the knob is rotatably connected to the clamping block. There are two first support frames, and the two first support frames are installed on the upper side of the detection platform.

[0014] As an alternative solution for the steel pipe gap detection device used in geological exploration of the present invention, wherein: a third spring is sleeved on the cleaning rod, one end of the third spring is connected to the second piston valve, and the other end of the third spring is connected to the inner wall of the air storage tank.

[0015] As an alternative solution for the steel pipe gap detection device used in geological exploration of the present invention, wherein: a deflation valve is installed on the air storage tank, and the deflation valve communicates with the total air chamber.

[0016] The present invention has the following beneficial effects: 1. The steel pipe gap detection device for geological exploration. The cleaning component adopts a pneumatic shunt and adaptive cleaning mechanism. Through the linkage of the main air chamber and multiple independent sub-air chambers, the coordinated control of multiple cleaning brushes by a single driving source is achieved. When there is a weld bulge, the blocked cleaning brush automatically stops while other cleaning brushes continue to work, ensuring uniform force on each area. In this way, during the cleaning operation, it can flexibly handle different degrees of bulge or depression at the weld. Even for the complex weld surface with unevenness, it can ensure uniform and stable pressure on each independent cleaning brush; Moreover, the articulated and elastic design of the cleaning brush enables the cleaning brush to flexibly adjust its posture by a small amount of adaptive rotation when encountering obstacles such as weld grooves or bulges, so as to more accurately fit the weld slope, ensuring that the cleaning operation has no dead corners, is efficient and stable. In addition, the addition of the air release valve effectively prevents device damage caused by excessive air pressure, extends the service life, and the overall solution significantly improves the efficiency, adaptability and equipment reliability of weld cleaning.

[0017] 2. The steel pipe gap detection device for geological exploration. Through the cooperation of the driving motor, the first gear and the driving gear, the cylinder is driven to rotate circumferentially. At the same time, through the cooperation of the cylinder and the round rod, and the sliding fit between the sliding column at the bottom side of the placing plate at the front end of the round rod and the preset track groove, when the driving gear continues to operate, the cylinder and the round rod jointly drive the sliding column to move along the track groove, driving the placing plate to move, so that the cleaning brush generates a compound movement of circumferential and axial directions. The axial movement of the cleaning brush can penetrate into the dead corners such as the gaps and grooves on the surface of the object, thoroughly removing stubborn dirt. The two cooperate with each other to achieve an efficient and comprehensive cleaning effect.

[0018] 3. The steel pipe gap detection device for geological exploration. By rotating the connecting cylinder, the angle rotation of the connecting cylinder and the track groove transposition are realized. Subsequently, the driving gear uses the cooperation of the round rod and the cylinder to make the cleaning brush clean different parts of the weld according to the new path, enabling the cleaning brush to better cover the weld, while greatly improving the cleaning efficiency of the cleaning brush, improving the comprehensiveness of cleaning, effectively solving the problem of cleaning blind spots, and making the cleaning brush have strong flexibility and adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0020] Figure 2 It is a schematic diagram of the internal sectional structure of the cleaning component of the present invention.

[0021] Figure 3 For the present invention Figure 2 The enlarged structural schematic diagram at A in it.

[0022] Figure 4 It is a schematic diagram of the cooperation structure of the driving gear and the placing plate of the present invention.

[0023] Figure 5 This is a schematic cross-sectional structure diagram of the air distribution chamber and the total air chamber of the present invention.

[0024] Figure 6 This is a schematic operation structure diagram of the electric push rod of the present invention.

[0025] Figure 7 This is a schematic cross-sectional structure diagram of the fixed cylinder of the present invention.

[0026] Figure 8 This is a schematic structure diagram of the clamping box of the present invention.

[0027] Figure 9 This is a schematic cross-sectional structure diagram of the connecting cylinder of the present invention.

[0028] Figure 10 This is a schematic structure diagram of the track groove of the present invention.

[0029] In the figure: 110, detection platform; 111, detection head; 120, cleaning component; 122, air distribution chamber; 123, first piston valve; 124, second piston valve; 125, cleaning rod; 130, air storage tank; 131, cleaning brush; 132, card slot; 133, card block; 134, first spring; 140, fixed cylinder; 141, connecting cylinder; 142, track groove; 143, circular sliding groove; 144, sliding column; 145, cylinder; 150, round rod; 151, second spring; 152, placement plate; 153, electric push rod; 160, moving groove; 161, moving block; 162, driving motor; 163, first gear; 170, support frame; 171, sliding track; 172, electric slider; 173, clamping box; 174, through hole; 175, clamping block; 180, knob; 190, air release valve; 210, third spring; 220, support rod; 230, driving gear; 240, sliding column; 250, total air chamber; 260, rocker; 270, threaded hole; 280, bolt. Specific Embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] Embodiment 1. The purpose of this embodiment is to facilitate the solution of the problem that there is insufficient cleaning when the traditional steel pipe weld is cleaned by spraying coupling water before detection. Due to contaminants such as scale attached during processing, transportation, etc., it is difficult to be completely removed, and the dead corners of complex structures cannot be cleaned properly, which will interfere with detection, reduce accuracy, form blind spots, and pose potential safety hazards. Please refer toFigures 1-10 , a steel pipe gap detection device for geological exploration, including a detection platform 110 and a detection head 111 for detecting welds. A cleaning component 120 for cleaning welds is installed on the detection platform 110. The cleaning component 120 includes a hollow air storage tank 130. The interior of the air storage tank 130 is divided into a main air chamber 250 and several sub-air chambers 122 communicating with the main air chamber 250. A first piston valve 123 is slidably connected in the main air chamber 250, and a second piston valve 124 is slidably connected in the sub-air chamber 122. One end of the first piston valve 123 away from the second piston valve 124 is connected to an electric push rod 153, and one end of the second piston valve 124 away from the first piston valve 123 is connected to a cleaning rod 125. A third spring 210 is sleeved on the cleaning rod 125. One end of the third spring 210 is connected to the second piston valve 124, and the other end of the third spring 210 is connected to the inner wall of the air storage tank 130. And the cleaning rod 125 passes through the air storage tank 130. One end of the cleaning rod 125 away from the second piston valve 124 is connected to a cleaning brush 131.

[0032] See Figure 4 、 Figure 5 And Figure 6 , specifically in implementation, during the process of cleaning the weld, the electric push rod 153 is started. Therefore, the moving end of the electric push rod 153 drives the first piston valve 123 to squeeze the gas inside the main air chamber 250. Therefore, the squeezed gas pushes the second piston valve 124, causing the second piston valve 124 to drive the cleaning brush 131 to clean the weld. Through the setting of multiple second piston valves 124, during the process of the first piston valve 123 squeezing the gas inside the main air chamber 250, the second piston valve 124 will drive multiple cleaning brushes 131 to clean the weld. Since the multiple cleaning brushes 131 are independently arranged, when facing a raised section of the weld, one of the cleaning brushes 131 stops moving due to the limitation of the protrusion during the cleaning process, and the electric push rod 153 operates. At this time, the restricted gas will enter other sub-air chambers 122, causing the second piston valves 124 inside the other sub-air chambers 122 to continue to drive the cleaning brushes 131 to move. See Figure 6 , in this way, during the cleaning process, the cleaning brushes 131 can adapt to different degrees of protrusions or depressions of the weld, and even under uneven conditions, the same pressure can be applied to each independent cleaning brush 131.

[0033] See Figure 5 And Figure 6, during specific implementation, a clamping groove 132 is formed on one side of the cleaning brush 131, a clamping block 133 adapted to the clamping groove 132 is installed on the other side of the cleaning brush 131, and a first spring 134 is installed between the clamping groove 132 and the clamping block 133. It should be noted that the cleaning brush 131 is hinged to the end of the cleaning rod 125, so that when the cleaning brush 131 is restricted by the weld groove or protrusion during cleaning, the cleaning brush 131 can adaptively rotate slightly, which can better adapt to the slope of the weld. It should be noted that the part where the clamping block 133 cooperates with the clamping groove 132 can be set in a spherical shape, so as to ensure that the cleaning brush 131 can adaptively rotate slightly.

[0034] See Figure 5 and Figure 6 , during specific implementation, a pressure relief valve 190 is installed on the air storage tank 130, and the pressure relief valve 190 communicates with the total air chamber 250. When the section of the weld is flat or qualified and the cleaning brush 131 does not need to move too much, the operation of the electric push rod 153 increases the air pressure inside the total air chamber 250. Through the setting of the pressure relief valve 190, the gas can effectively flow out of the total air chamber 250. It should be noted that the pressure relief valve 190 is set as a gas valve with a gas threshold.

[0035] See Figure 1 and Figure 8 , the fixed cylinder 140 is installed on the detection platform 110 through the support rod 220. A sliding track 171 is installed on the upper side of the detection platform 110. A first support frame 170 for supporting the steel pipe is installed on the detection platform 110. An electric slider 172 is installed on the bottom side of the first support frame 170. Through the sliding cooperation of the electric slider 172 and the sliding track 171, the first support frame 170 can adapt to steel pipes of different lengths. A clamping box 173 is installed on the first support frame 170. A through hole 174 for the steel pipe to penetrate is formed inside the clamping box 173. A clamping block 175 is installed inside the through hole 174. A knob 180 is installed on the upper side of the clamping box 173. The knob 180 is threadedly connected to the inner wall of the clamping box 173. The bottom end of the knob 180 is rotatably connected to the clamping block 175. There are two first support frames 170, and the two first support frames 170 are installed on the upper side of the detection platform 110.

[0036] In this embodiment: Through the linkage between the total gas chamber 250 and multiple sub-gas chambers 122 in the gas storage tank 130, the electric push rod 153 is used to drive the first piston valve 123 to extrude gas. Therefore, the restricted gas pushes the second piston valve 124 in each sub-gas chamber 122, so that the second piston valve 124 drives the cleaning rod 125 and the cleaning brush 131 to clean the weld during the movement. Moreover, since multiple cleaning brushes 131 are independently arranged and can adapt to the protrusions or depressions of the weld, when a certain cleaning brush 131 is blocked, the gas automatically diverts to other sub-gas chambers 122 to ensure that the remaining cleaning brushes 131 continue to work and ensure uniform force in each area; At the same time, the articulated and elastic design of the cleaning brush 131 enables it to adaptively rotate slightly to better fit the slope of the weld. This solution significantly improves the efficiency and effect of weld cleaning and provides a reliable guarantee for subsequent inspection work.

[0037] Embodiment 2 aims to solve the problem that when the cleaning brush cleans the weld, it can only clean one paragraph, resulting in incomplete cleaning. This embodiment is an improvement based on Embodiment 1. Specifically, please refer to Figures 1-10 , the cleaning assembly 120 further includes a fixed cylinder 140. A connecting cylinder 141 is arranged inside the fixed cylinder 140. A track groove 142 for guiding the movement of the cleaning brush 131 is formed inside the connecting cylinder 141. The track groove 142 is composed of several arc-shaped grooves, and several arc-shaped grooves are combined in a circular array, which can make the movement of 152 smoother. A driving gear 230 is rotatably installed on the side of the fixed cylinder 140. A driving motor 162 is installed on the side of the fixed cylinder 140. A first gear 163 is installed on the rotating shaft of the driving motor 162, and the first gear 163 meshes with the driving gear 230.

[0038] A circular chute 143 is formed on the side wall of the fixed cylinder 140. Symmetrically installed on one side of the driving gear 230 are sliding columns 144 adapted to the circular chute 143. A cylinder 145 is installed on the other side of the driving gear 230. A round rod 150 is slidably installed inside the cylinder 145. A second spring 151 is installed between the round rod 150 and the cylinder 145. By sliding the round rod 150 inside the cylinder 145, the round rod 150 can adaptively expand and contract under the condition that the placement plate 152 is restricted by the track groove 142. The end of the round rod 150 is installed with a placement plate 152.

[0039] The detection head 111 is installed on one of the placement plates 152, the electric push rod 153 and the gas storage tank 130 are installed on the other placement plate 152, and a sliding column 240 is installed on the bottom side of the placement plate 152. The sliding column 240 is slidably fitted inside the track groove 142.

[0040] See Figure 2 、 Figure 3 andFigure 4 Specifically, during the operation of the drive motor 162, the first gear 163 is utilized to drive the drive gear 230 to rotate. During the rotation of the drive gear 230, the cylinder 145 is driven to rotate. Due to the arrangement of the round rod 150 inside the cylinder 145, and the placement plate 152 is installed at the front end of the round rod 150. At the same time, the sliding column 240 at the bottom side of the placement plate 152 is in sliding fit with the track groove 142. Therefore, during the rotation of the drive gear 230, by the cooperation of the cylinder 145 and the round rod 150, the sliding column 240 is driven to move along the path of the track groove 142. At the same time, the cleaning brush 131 is arranged on the placement plate 152. Therefore, during the movement of the placement plate 152 along the path of the track groove 142, the circumferential and axial movements of the cleaning brush 131 are realized.

[0041] In this embodiment: After the drive motor 162 is started, the drive motor 162 drives the first gear 163 to rotate. At the same time, the first gear 163 drives the drive gear 230 to rotate by means of meshing. The drive gear 230 then drives the cylinder 145 to rotate. Through the cooperation of the cylinder 145 and the round rod 150, and at the same time, the sliding column 240 at the bottom side of the placement plate 152 installed at the front end of the round rod 150 forms a sliding fit relationship with the preset track groove 142. Therefore, during the continuous operation of the drive gear 230, the cylinder 145 and the round rod 150 cooperate to drive the sliding column 240 to move along the track groove 142. The placement plate 152 moves with the sliding column 240, causing the cleaning brush 131 to generate a combined circumferential and axial movement. Since the circumferential movement of the cleaning brush 131 expands the cleaning range and the axial movement penetrates into the cleaning dead corners, the combination of the two achieves an efficient and comprehensive cleaning effect.

[0042] Embodiment 3 aims to facilitate the solution of the problem that since the track groove on the connecting cylinder is fixed, after the cleaning brush rotates circumferentially, there will be some places that are not cleaned, affecting the detection. This embodiment is an improvement based on Embodiment 2. Specifically, please refer to Figures 1-10 , an activity groove 160 is opened on the inner wall of the fixed cylinder 140. An activity block 161 adapted to the activity groove 160 is arranged on the side of the connecting cylinder 141. Bolts 280 are symmetrically installed on the activity block 161. A threaded hole 270 adapted to the bolt 280 is opened on the outside of the fixed cylinder 140. A rocker 260 is installed on the side of the connecting cylinder 141. The connecting cylinder 141 is rotationally fitted inside the fixed cylinder 140. A rocker 260 is installed on the side of the connecting cylinder 141. The setting of the rocker 260 is to facilitate the operator to rotate the connecting cylinder 141. The connecting cylinder 141 is rotationally fitted inside the fixed cylinder 140. Through the cooperation of the bolt 280 and the threaded hole 270, in order to fix the position of the connecting cylinder 141 after rotating the connecting cylinder 141; it should be noted that several threaded holes 270 can be provided if necessary, so that the connecting cylinder 141 can rotate different degrees.

[0043] See Figure 2 , Figure 3 , Figure 7 and Figure 9 , specifically in implementation, during the operation of the drive motor 162, it can drive the cleaning brush to rotate. After the cleaning brush cleans a weld seam in one circle, the operator manually rotates the rocker to achieve the angular rotation of the connecting cylinder 141 inside the fixed cylinder 140. As the connecting cylinder 141 rotates, the track groove 142 on its inner wall also correspondingly completes the position transposition. Subsequently, the drive motor 162 is started, causing the drive gear 230 to rotate. The rotation of the drive gear 230 drives the relevant transmission structures to operate in coordination, enabling the cleaning brush 131 to clean different parts of the weld seam targeted according to the new path after the position conversion of the track groove 142 on the inner wall of the connecting cylinder 141.

[0044] In this embodiment: during the process of the operator rotating the connecting cylinder, the connecting cylinder 141 rotates inside the fixed cylinder 140, and the track groove 142 on its inner wall undergoes angular transposition accordingly. Subsequently, the drive motor 162 drives the drive gear 230 to rotate stably. By using the cooperation of the cylinder 145 and the round rod 150, the cleaning brush 131 cleans different parts of the weld seam targeted according to the new path of the track groove 142, effectively solving the problem of cleaning blind spots and improving the cleaning quality and detection accuracy.

[0045] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0046] The above are only the preferred embodiments of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present invention.

Claims

1. A steel pipe gap detection device for geological exploration, comprising a detection platform (110) and a detection head (111) for detecting weld seams, characterized in that: A cleaning component (120) for cleaning the weld seam is installed on the detection platform (110). The cleaning component (120) includes a hollow air storage tank (130). The interior of the air storage tank (130) is divided into a main air chamber (250) and several sub-air chambers (122) communicating with the main air chamber (250). A first piston valve (123) is slidably connected in the main air chamber (250), and a second piston valve (124) is slidably connected in the sub-air chamber (122). One end of the second piston valve (124) away from the first piston valve (123) is connected to a cleaning rod (125), and the cleaning rod (125) passes through the air storage tank (130). One end of the cleaning rod (125) away from the second piston valve (124) is connected to a cleaning brush (131).

2. The steel pipe gap detection device for geological exploration according to claim 1, characterized in that: A slot (132) is formed on one side of the cleaning brush (131), and a block (133) adapted to the slot (132) is installed on the other side of the cleaning brush (131). A first spring (134) is installed between the slot (132) and the block (133).

3. The steel pipe gap detection device for geological exploration according to claim 1, characterized in that: The cleaning component (120) further includes a fixed cylinder (140). A connecting cylinder (141) is arranged inside the fixed cylinder (140). A track groove (142) for guiding the movement direction of the cleaning brush (131) is formed inside the connecting cylinder (141). A driving gear (230) is rotatably installed on the side of the fixed cylinder (140).

4. The steel pipe gap detection device for geological exploration according to claim 3, characterized in that: A circular sliding groove (143) is formed on the side wall of the fixed cylinder (140). Symmetrically installed on one side of the driving gear (230) are sliding columns (144) adapted to the circular sliding groove (143). A cylinder (145) is installed on the other side of the driving gear (230). A round rod (150) is slidably installed inside the cylinder (145). A second spring (151) is installed between the round rod (150) and the cylinder (145). A placing plate (152) is installed at the end of the round rod (150).

5. The steel pipe gap detection device for geological exploration according to claim 3, wherein: The detection head (111) is installed on one of the placing plates (152). One end of the first piston valve (123) away from the second piston valve (124) is connected to an electric push rod (153). The electric push rod (153) is installed on the other placing plate (152). The air storage tank (130) away from the electric push rod (153) is installed on the placing plate (152). A sliding column (240) is installed on the bottom side of the placing plate (152). The sliding column (240) is slidably engaged inside the track groove (142).

6. The steel pipe gap detection device for geological exploration according to claim 3, characterized in that: An activity groove (160) is formed in the inner wall of the fixed cylinder (140). An activity block (161) adapted to the activity groove (160) is formed in the side of the connecting cylinder (141). Bolts (280) are symmetrically installed on the activity block (161). A threaded hole (270) adapted to the bolt (280) is formed in the outside of the fixed cylinder (140). A rocker (260) is installed on the side of the connecting cylinder (141). The connecting cylinder (141) is rotationally fitted inside the fixed cylinder (140).

7. The steel pipe gap detection device for geological exploration according to claim 4, wherein: A driving motor (162) is installed on the side of the fixed cylinder (140). A first gear (163) is installed on the rotating shaft of the driving motor (162). The first gear (163) meshes with the driving gear (230).

8. The steel pipe gap detection device for geological exploration according to claim 3, characterized in that: The fixed cylinder (140) is installed on the detection platform (110) through a support rod (220). A sliding track (171) is installed on the upper side of the detection platform (110). A first support frame (170) for supporting the steel pipe is installed on the detection platform (110). An electric slider (172) is installed on the bottom side of the first support frame (170). The electric slider (172) is slidably fitted with the sliding track (171). A clamping box (173) is installed on the first support frame (170). A through hole (174) for the steel pipe to penetrate is formed inside the clamping box (173). A clamping block (175) is installed inside the through hole (174). A knob (180) is installed on the upper side of the clamping box (173). The knob (180) is threadedly connected to the inner wall of the clamping box (173). The bottom end of the knob (180) is rotatably connected to the clamping block (175). There are two first support frames (170), and the two first support frames (170) are installed on the upper side of the detection platform (110).

9. The steel pipe gap detection device for geological exploration according to claim 1, characterized in that: A third spring (210) is sleeved on the cleaning rod (125). One end of the third spring (210) is connected to the second piston valve (124), and the other end of the third spring (210) is connected to the inner wall of the air storage tank (130).

10. A steel pipe gap detection device for geological exploration according to claim 1, characterized in that: A deflation valve (190) is installed on the air storage tank (130). The deflation valve (190) communicates with the total air chamber (250).

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