A stainless steel pipe leakage detection device

Abstract

The present invention discloses a stainless steel pipe leakage detection device, which belongs to the field of leakage detection technology. The device comprises a conveying mechanism for intermittently conveying stainless steel pipes. The conveying mechanism is provided with two leak detection mechanisms for performing leakage detection on the stainless steel pipes and a feeding mechanism for feeding. The conveying mechanism provided by the present invention can automatically take the stainless steel pipes in the feeding mechanism out to the leak detection mechanism, transfer the stainless steel pipes that have completed the detection, and finally send out the qualified stainless steel pipes, thereby realizing fully automatic conveying action with high degree of automation and good continuity. The leak detection mechanism does not move when the intermittent lifting block lifts the stainless steel pipe, and when the intermittent lifting block moves under the shell groove, the stainless steel pipe is leak-tested, so that the detection and conveying processes are carried out continuously and the detection efficiency is high. Each time the feeding mechanism contacts the intermittent lifting block, only one stainless steel pipe is dropped out, thereby realizing one-by-one detection of each stainless steel pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of leakage detection, and particularly relates to a leakage detection device for stainless steel pipes. Background Art

[0002] Stainless steel pipes are a kind of pipe materials widely used in industry and daily life. They are made of stainless steel and have excellent corrosion resistance, oxidation resistance, mechanical strength and thermal stability, so they are widely used in many fields. The leakage detection of stainless steel pipes is an important link to ensure the safety and reliability of stainless steel pipe systems during operation. Since stainless steel pipes are usually used to bear high pressure, temperature and corrosive media, once leakage occurs, it will not only affect the production process, but also may cause environmental pollution or personal injury. By injecting gas into the pipe to increase the internal pressure of the pipe and observing whether the pressure drops. Through the monitoring of pressure changes, it can be judged whether the pipe leaks. The leakage detection devices for stainless steel pipes in the prior art usually cannot achieve fully automatic continuous detection, and the detection efficiency is low. Summary of the Invention

[0003] For the above technical problems, the technical solution adopted by the present invention is: a leakage detection device for stainless steel pipes, including a conveying mechanism for intermittently conveying stainless steel pipes. The conveying mechanism includes a placing shell. Two leak detection mechanisms for detecting the leakage of stainless steel pipes and one feeding mechanism for feeding are arranged on the conveying mechanism. The leak detection mechanism includes a side frame, and the side frame is fixedly installed on the side of the placing shell. The feeding mechanism includes a feeding frame, and the feeding frame is fixedly installed on the placing shell.

[0004] Further, the conveying mechanism includes an inner motor and a speed reducer fixedly installed in the placing shell. The motor shaft of the inner motor is connected to the input end of the speed reducer. A middle rotating shaft is rotatably installed on the placing shell, and the middle rotating shaft is connected to the output end of the speed reducer. Middle wheels are fixedly installed at both ends of the middle rotating shaft.

[0005] Further, two lifting rod modules are arranged on the placing shell. The lifting rod module includes a rotating plate rotatably installed on the placing shell. An outer transmission wheel is fixedly installed on the rotating plate. A fixed gear is fixedly installed in the placing shell. The rotating plate is rotatably installed with the fixed gear. An eccentric rotating block is rotatably installed on the rotating plate. A planetary gear is eccentrically fixedly installed on the eccentric rotating block. The planetary gear meshes with the fixed gear. A rotating column is fixedly installed on the eccentric rotating block.

[0006] Further, a switching motor is fixedly installed on the placing shell. A switching baffle is rotatably installed on the placing shell, and the switching baffle is fixedly installed on the motor shaft of the switching motor.

[0007] Further, a short drive belt is wound around the outer drive wheel and the intermediate wheel of the lifting rod module on the side close to the switching motor, and a long drive belt is wound around the outer drive wheel and the intermediate wheel of the lifting rod module on the side close to the feeding rack. An intermittent lifting block is rotatably installed on the rotating columns of the two lifting rod modules. Notch openings for placing stainless steel pipes are provided on both the placing shell and the intermittent lifting block.

[0008] The inner motor rotates to drive the intermediate rotating shaft to rotate, thereby driving the intermediate wheel to rotate. The two outer drive wheels are driven to rotate through the short drive belt and the long drive belt, thereby driving the two rotating plates to rotate synchronously, thereby driving the two eccentric rotating blocks and the rotating columns to rotate synchronously, thereby driving the intermittent lifting block to move. When the intermittent lifting block ascends, the stainless steel pipe located in the groove of the placing shell is lifted through the groove of the intermittent lifting block. When descending, the stainless steel pipe is placed in the next notch of the placing shell. This process is repeated. When the inspected stainless steel pipe is transferred from between the two docking seats to the groove of the placing shell beside the switching motor, the stainless steel pipe in the groove of the placing shell beside the switching motor is transferred out of the placing shell. If the stainless steel pipe is qualified, the switching motor does not operate, and the stainless steel pipe slides out along the end of the placing shell. If the stainless steel pipe is unqualified, the switching motor rotates, causing the switching baffle to block the stainless steel pipe, and the inner motor stops rotating.

[0009] Under the action of the fixed gear, the eccentric rotating block and the planetary gear rotate. When the rotating column is at the highest point, the axis of the rotating column is directly below the axis of the hinge point between the eccentric rotating block and the rotating plate. When the rotating column is at the lowest point, the axis of the rotating column is directly above the axis of the hinge point between the eccentric rotating block and the rotating plate. When the rotating column is closest to the feeding rack side, the axis of the rotating column is behind the axis of the hinge point between the eccentric rotating block and the rotating plate. When the rotating column is closest to the switching motor side, the axis of the rotating column is in front of the axis of the hinge point between the eccentric rotating block and the rotating plate. Thus, when the intermittent lifting block moves, the displacement in the vertical direction is smaller, saving space, and the displacement in the horizontal direction is larger, facilitating use, while increasing the stability of the movement of the intermittent lifting block.

[0010] Further, the leak detection mechanism includes a slide rail fixedly installed on the side frame, a track wheel rotatably installed on the side frame, an inner drive wheel fixedly installed on the track wheel, an outer drive belt wound around the inner drive wheel and the outer drive wheel, a docking seat slidably installed on the slide rail, a sliding column slidably installed in the docking seat, a pressing block fixedly installed on the sliding column, a pressing block spring provided between the pressing block and the docking seat, a bottom guide post fixedly installed below the docking seat, a stepped groove provided on the track wheel, and the bottom guide post slides in the stepped groove. The pressing block and the sliding column are hollow, and an air outlet is provided on the pressing block.

[0011] Further, an air inflator is fixedly installed on the docking seat of one leak detection mechanism, and a pressure sensor is fixedly installed on the docking seat of the other leak detection mechanism. The sliding column is slidably installed with the air inflator and slidably installed with the pressure sensor.

[0012] The outer transmission wheel drives the inner transmission wheel and the track wheel to rotate through the outer transmission belt, and drives the bottom guide column and the docking seat to slide along the slide rail through the step groove, so that the docking seats on both sides of the stainless steel tube reach the outside of the stainless steel tube. At the same time, the stainless steel tube hits the pressure block, so that the pressure block spring is compressed. The inflator introduces gas into the stainless steel tube through the pressure block and the sliding column, and detects the air pressure in the stainless steel tube through the air pressure sensor, thereby detecting the leakage of the stainless steel tube.

[0013] When the intermittent lifting block lifts the stainless steel pipe to the next workstation, the docking seat is at the far end. When the intermittent lifting block is out of contact with the stainless steel pipe, the docking seat is at the proximal end, located on the outside of the stainless steel pipe, to perform leakage detection on the stainless steel pipe.

[0014] Furthermore, the feeding mechanism includes a sliding pipe slope fixedly installed on the feeding rack, a push plate is slidably installed on the feeding rack, a push rod is fixedly installed on the push plate, a rotating rod is rotatably installed on the push plate, an upper rotating rod is rotatably installed on the feeding rack, the upper rotating rod and the rotating rod are rotatably installed, two waist holes are provided on the upper rotating rod, a lower baffle and an upper baffle are slidably installed on the feeding rack, a return spring is provided between the lower baffle and the feeding rack, the upper baffle and the upper rotating rod are rotatably installed through the waist hole, the lower baffle and the upper rotating rod are rotatably installed through the waist hole, chamfers are provided on the upper and lower surfaces of the lower baffle and the upper baffle, and stainless steel pipes are stacked in the feeding rack.

[0015] In the initial state, the lowest stainless steel tube is located on the lower baffle, and the return spring is in an unstressed state. When the intermittent lifting block contacts the push rod, it will push the push plate, thereby driving the rotating rod to rotate, thereby driving the upper rotating rod to rotate, thereby driving the upper baffle to slide, and the upper baffle is inserted between the lowest stainless steel tube and the stainless steel tube above it. At the same time, the lower baffle moves backward, and the return spring is compressed, causing the lowest stainless steel tube to fall into the groove of the intermittent lifting block, and then be brought between the two docking seats by the intermittent lifting block. When the intermittent lifting block is disengaged from the push rod, the return spring rebounds, causing the lower baffle to extend, and the upper baffle is pushed backward, causing the stainless steel tube to fall onto the lower baffle.

[0016] Compared with the prior art, the present invention has the following advantages: (1) the conveying mechanism provided in the present invention can automatically take out the stainless steel tubes in the feeding mechanism to the leak detection mechanism, transfer the stainless steel tubes that have been tested, and finally send out the qualified stainless steel tubes, thereby realizing fully automatic conveying action, high degree of automation and good continuity; (2) the leak detection mechanism provided in the present invention does not move when the intermittent lifting block lifts the stainless steel tube, and when the intermittent lifting block moves under the housing groove, the stainless steel tube is tested for leakage, so that the detection and conveying processes are carried out continuously and the detection efficiency is high; (3) each time the feeding mechanism provided in the present invention contacts the intermittent lifting block, only one stainless steel tube is dropped out, thereby realizing the detection of each stainless steel tube one by one. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0018] Figure 2 Schematic diagram of the conveying mechanism structure of the present invention Figure 1 .

[0019] Figure 3 Schematic diagram of the conveying mechanism structure of the present invention Figure 2 .

[0020] Figure 4 Schematic diagram of the conveying mechanism structure of the present invention Figure 3 .

[0021] Figure 5 Schematic diagram of the leak detection mechanism structure of the present invention Figure 1 .

[0022] Figure 6 Schematic diagram of the leak detection mechanism structure of the present invention Figure 2 .

[0023] Figure 7 Schematic diagram of the leak detection mechanism structure of the present invention Figure 3 .

[0024] Figure 8 This is a schematic diagram of the track wheel structure of the present invention.

[0025] Figure 9 Schematic diagram of the feeding mechanism structure of the present invention Figure 1 .

[0026] Figure 10 Schematic diagram of the feeding mechanism structure of the present invention Figure 2 .

[0027] Reference numerals: 101 - housing; 102 - switching motor; 103 - switching baffle; 104 - inner motor; 105 - reduction gearbox; 106 - intermediate shaft; 107 - intermediate wheel; 108 - short transmission belt; 109 - long transmission belt; 110 - outer transmission wheel; 111 - fixed gear; 112 - rotating plate; 113 - planetary gear; 114 - eccentric rotating block; 115 - rotating column; 116 - intermittent lifting block; 201 - side frame; 202 - track wheel; 203 - outer transmission Belt; 204-inner transmission wheel; 205-slide rail; 206-docking seat; 207-inflator; 208-air pressure sensor; 209-pressure block; 210-pressure block spring; 211-slide column; 212-bottom guide column; 213-step groove; 301-feeding rack; 302-slide pipe slope; 303-push rod; 304-push plate; 305-rotating rod; 306-upper rotating rod; 307-lower baffle; 308-upper baffle; 309-return spring; 4-stainless steel tube. DETAILED DESCRIPTION

[0028] The following further describes the specific implementation manners of the present invention with reference to the accompanying drawings.

[0029] Embodiment: Refer to Figures 1-10 , a leakage detection device for a stainless steel pipe, including a conveying mechanism for intermittently conveying the stainless steel pipe 4. The conveying mechanism includes a placing shell 101. There are two leak detection mechanisms for detecting the leakage of the stainless steel pipe 4 and one feeding mechanism for feeding on the conveying mechanism. The leak detection mechanism includes a side frame 201, and the side frame 201 is fixedly installed on the side of the placing shell 101. The feeding mechanism includes a feeding frame 301, and the feeding frame 301 is fixedly installed on the placing shell 101.

[0030] As Figures 2-4 shown, the conveying mechanism includes an inner motor 104 and a reduction gearbox 105 fixedly installed in the placing shell 101. The motor shaft of the inner motor 104 is connected to the input end of the reduction gearbox 105. A middle rotating shaft 106 is rotatably installed on the placing shell 101, and the middle rotating shaft 106 is connected to the output end of the reduction gearbox 105. Middle wheels 107 are fixedly installed at both ends of the middle rotating shaft 106.

[0031] As Figures 2-4 shown, there are two lifting rod modules arranged on the placing shell 101. The lifting rod module includes a rotating plate 112 rotatably installed on the placing shell 101. An outer transmission wheel 110 is fixedly installed on the rotating plate 112. A fixed gear 111 is fixedly installed inside the placing shell 101. The rotating plate 112 is rotatably installed with the fixed gear 111. An eccentric rotating block 114 is rotatably installed on the rotating plate 112. A planetary gear 113 is eccentrically fixedly installed on the eccentric rotating block 114. The planetary gear 113 meshes with the fixed gear 111. A rotating column 115 is fixedly installed on the eccentric rotating block 114.

[0032] As Figures 2-4 shown, a switching motor 102 is fixedly installed on the placing shell 101. A switching baffle 103 is rotatably installed on the placing shell 101, and the switching baffle 103 is fixedly installed on the motor shaft of the switching motor 102.

[0033] As Figures 2-4 shown, a short transmission belt 108 is wound outside the outer transmission wheel 110 of the lifting rod module on the side close to the switching motor 102 and the middle wheel 107. A long transmission belt 109 is wound outside the outer transmission wheel 110 of the lifting rod module on the side close to the feeding frame 301 and the middle wheel 107. An intermittent lifting block 116 is rotatably installed on the rotating columns 115 of the two lifting rod modules. Notch openings for placing the stainless steel pipe 4 are provided on both the placing shell 101 and the intermittent lifting block 116.

[0034] The rotation of the inner motor 104 drives the rotation of the intermediate rotating shaft 106, thereby driving the rotation of the intermediate gear 107. Through the short transmission belt 108 and the long transmission belt 109, the two outer transmission wheels 110 are driven to rotate, thereby driving the synchronous rotation of the two rotating plates 112, thereby driving the synchronous rotation of the two eccentric rotating blocks 114 and the rotating columns 115, thereby driving the intermittent lifting block 116 to move. When the intermittent lifting block 116 rises, the stainless steel pipe 4 located in the groove of the placement shell 101 is lifted through the groove of the intermittent lifting block 116. When it descends, the stainless steel pipe 4 is placed in the next groove of the placement shell 101. This process is repeated. When the detected stainless steel pipe 4 is transferred from between the two docking seats 206 to the groove of the placement shell 101 beside the switching motor 102, the stainless steel pipe 4 in the groove of the placement shell 101 beside the switching motor 102 is transferred out of the placement shell 101. If the stainless steel pipe 4 is qualified, the switching motor 102 does not act, and the stainless steel pipe 4 slides out along the end of the placement shell 101. If the stainless steel pipe 4 is unqualified, the switching motor 102 rotates, so that the switching baffle 103 blocks the stainless steel pipe 4, and the inner motor 104 stops rotating.

[0035] Under the action of the fixed gear 111, the eccentric rotating block 114 and the planetary gear 113 rotate. When the rotating column 115 is at the highest point, the axis of the rotating column 115 is directly below the axis of the hinge point between the eccentric rotating block 114 and the rotating plate 112. When the rotating column 115 is at the lowest point, the axis of the rotating column 115 is directly above the axis of the hinge point between the eccentric rotating block 114 and the rotating plate 112. When the rotating column 115 is closest to the feeding frame 301, the axis of the rotating column 115 is behind the axis of the hinge point between the eccentric rotating block 114 and the rotating plate 112. When the rotating column 115 is closest to the switching motor 102, the axis of the rotating column 115 is in front of the axis of the hinge point between the eccentric rotating block 114 and the rotating plate 112. Thus, when the intermittent lifting block 116 moves, the displacement in the vertical direction is smaller, saving space, the displacement in the horizontal direction is larger, facilitating use, and at the same time increasing the stability of the movement of the intermittent lifting block 116.

[0036] As Figures 5-8 shown, the leak detection mechanism includes a slide rail 205 fixedly installed on the side frame 201. A track wheel 202 is rotatably installed on the side frame 201. An inner transmission wheel 204 is fixedly installed on the track wheel 202. An outer transmission belt 203 is wound around the inner transmission wheel 204 and the outer transmission wheel 110. A docking seat 206 is slidably installed on the slide rail 205. A slide column 211 is slidably installed in the docking seat 206. A pressing block 209 is fixedly installed on the slide column 211. A pressing block spring 210 is arranged between the pressing block 209 and the docking seat 206. A bottom guide post 212 is fixedly installed below the docking seat 206. A stepped groove 213 is arranged on the track wheel 202. The bottom guide post 212 slides in the stepped groove 213. The pressing block 209 and the slide column 211 are hollow, and an air outlet hole is arranged on the pressing block 209.

[0037] As shown Figures 5-8 in the figure, an inflator 207 is fixedly installed on the docking seat 206 of one leak detection mechanism, and a barometric pressure sensor 208 is fixedly installed on the docking seat 206 of the other leak detection mechanism. The sliding column 211 is slidably installed with the inflator 207 and the barometric pressure sensor 208.

[0038] The outer transmission wheel 110 drives the inner transmission wheel 204 and the track wheel 202 to rotate through the outer transmission belt 203, and drives the bottom guide column 212 and the docking seat 206 to slide along the slide rail 205 through the stepped groove 213, so that the docking seats 206 on both sides of the stainless steel pipe 4 reach the outside of the stainless steel pipe 4. At the same time, the stainless steel pipe 4 abuts against the pressing block 209, so that the pressing block spring 210 is compressed. The inflator 207 passes gas into the stainless steel pipe 4 through the pressing block 209 and the sliding column 211, and detects the air pressure inside the stainless steel pipe 4 through the barometric pressure sensor 208, thereby detecting the leak tightness of the stainless steel pipe 4.

[0039] When the intermittent lifting block 116 lifts the stainless steel pipe 4 to the next working station, the docking seat 206 is at the far end. When the intermittent lifting block 116 is disengaged from the stainless steel pipe 4, the docking seat 206 is at the near end, located outside the stainless steel pipe 4, and the leak tightness of the stainless steel pipe 4 is detected.

[0040] As shown Figure 9 and Figure 10 in the figure, the feeding mechanism includes a sliding pipe slope 302 fixedly installed on the feeding frame 301. A push plate 304 is slidably installed on the feeding frame 301. A push rod 303 is fixedly installed on the push plate 304. A rotating rod 305 is rotatably installed on the push plate 304. An upper rotating rod 306 is rotatably installed on the feeding frame 301. The upper rotating rod 306 is rotatably installed with the rotating rod 305. Two waist-shaped holes are provided on the upper rotating rod 306. A lower baffle 307 and an upper baffle 308 are slidably installed on the feeding frame 301. A return spring 309 is provided between the lower baffle 307 and the feeding frame 301. The upper baffle 308 is rotatably installed with the upper rotating rod 306 through the waist-shaped hole. The lower baffle 307 is rotatably installed with the upper rotating rod 306 through the waist-shaped hole. Chamfers are provided on the upper and lower surfaces of the lower baffle 307 and the upper baffle 308. The stainless steel pipes 4 are stacked in the feeding frame 301.

[0041] In the initial state, the lowermost stainless steel tube 4 is located on the lower baffle 307, and the return spring 309 is in an unloaded state. After the intermittent lifting block 116 contacts the push rod 303, it will push the push plate 304, thereby driving the rotating rod 305 to rotate, thereby driving the upper rotating rod 306 to rotate, thereby driving the upper baffle 308 to slide. The upper baffle 308 is inserted between the lowermost stainless steel tube 4 and the stainless steel tube 4 above it. At the same time, the lower baffle 307 moves backward, and the return spring 309 is compressed, causing the lowermost stainless steel tube 4 to fall into the groove of the intermittent lifting block 116, and then being carried by the intermittent lifting block 116 between the two docking seats 206. After the intermittent lifting block 116 disengages from the push rod 303, the return spring 309 rebounds, causing the lower baffle 307 to extend and the upper baffle 308 to be pushed backward, causing the stainless steel tube 4 to fall onto the lower baffle 307.

[0042] The working principle of a stainless steel pipe leakage detection device disclosed by the present invention is as follows: The inner motor 104 rotates to drive the intermediate rotating shaft 106 to rotate, thereby driving the intermediate gear 107 to rotate. Through the short transmission belt 108 and the long transmission belt 109, two outer transmission wheels 110 are driven to rotate, thereby driving two rotating plates 112 to rotate synchronously, thereby driving two eccentric rotating blocks 114 and rotating columns 115 to rotate synchronously, thereby driving the intermittent lifting block 116 to move. When the intermittent lifting block 116 rises, the stainless steel pipe 4 located in the groove of the placement shell 101 is lifted through the groove of the intermittent lifting block 116. When it descends, the stainless steel pipe 4 is placed in the next groove of the placement shell 101. This process is repeated. When the detected stainless steel pipe 4 is transferred from between the two docking seats 206 to the groove of the placement shell 101 beside the switching motor 102, the stainless steel pipe 4 in the groove of the placement shell 101 beside the switching motor 102 is transferred out of the placement shell 101. If the stainless steel pipe 4 is detected to be qualified, the switching motor 102 does not operate, and the stainless steel pipe 4 slides out along the end of the placement shell 101. If the stainless steel pipe 4 is unqualified, the switching motor 102 rotates, so that the switching baffle 103 blocks the stainless steel pipe 4, and the inner motor 104 stops rotating. Under the action of the fixed gear 111, the eccentric rotating block 114 and the planetary gear 113 rotate. When the rotating column 115 is at the highest point, the axis of the rotating column 115 is directly below the axis of the hinge point between the eccentric rotating block 114 and the rotating plate 112. When the rotating column 115 is at the lowest point, the axis of the rotating column 115 is directly above the axis of the hinge point between the eccentric rotating block 114 and the rotating plate 112. When the rotating column 115 is closest to the feeding rack 301, the axis of the rotating column 115 is behind the axis of the hinge point between the eccentric rotating block 114 and the rotating plate 112. When the rotating column 115 is closest to the switching motor 102, the axis of the rotating column 115 is in front of the axis of the hinge point between the eccentric rotating block 114 and the rotating plate 112. Thus, when the intermittent lifting block 116 moves, the displacement in the vertical direction is smaller, saving space, and the displacement in the horizontal direction is larger, facilitating use, and at the same time increasing the stability of the movement of the intermittent lifting block 116. In the initial state, the lowermost stainless steel pipe 4 is located on the lower baffle 307, and the return spring 309 is in an unloaded state. When the intermittent lifting block 116 contacts the push rod 303, it will push the push plate 304, thereby driving the rotating rod 305 to rotate, thereby driving the upper rotating rod 306 to rotate, thereby driving the upper baffle 308 to slide. The upper baffle 308 is inserted between the lowermost stainless steel pipe 4 and the stainless steel pipe 4 above it. At the same time, the lower baffle 307 moves backward, and the return spring 309 is compressed, so that the lowermost stainless steel pipe 4 falls into the groove of the intermittent lifting block 116, and then is carried by the intermittent lifting block 116 between the two docking seats 206. When the intermittent lifting block 116 disengages from the push rod 303, the return spring 309 rebounds, causing the lower baffle 307 to extend and the upper baffle 308 to be pushed backward, so that the stainless steel pipe 4 falls onto the lower baffle 307.In the initial state, the lowermost stainless steel pipe 4 is located on the lower baffle 307, and the return spring 309 is in an unloaded state. After the intermittent lifting block 116 contacts the push rod 303, it will push the push plate 304, thereby driving the rotating rod 305 to rotate, thereby driving the upper rotating rod 306 to rotate, thereby driving the upper baffle 308 to slide. The upper baffle 308 is inserted between the lowermost stainless steel pipe 4 and the stainless steel pipe 4 above it. At the same time, the lower baffle 307 moves backward, and the return spring 309 is compressed, causing the lowermost stainless steel pipe 4 to fall into the groove of the intermittent lifting block 116, and then being carried by the intermittent lifting block 116 between the two docking seats 206. When the intermittent lifting block 116 disengages from the push rod 303, the return spring 309 rebounds, causing the lower baffle 307 to extend and the upper baffle 308 to be pushed backward, causing the stainless steel pipe 4 to fall onto the lower baffle 307. The outer transmission wheel 110 drives the inner transmission wheel 204 and the track wheel 202 to rotate through the outer transmission belt 203, and drives the bottom guide post 212 and the docking seat 206 to slide along the slide rail 205 through the stepped groove 213, so that the docking seats 206 on both sides of the stainless steel pipe 4 reach the outside of the stainless steel pipe 4. At the same time, the stainless steel pipe 4 abuts against the pressing block 209, causing the pressing block spring 210 to be compressed. The inflator 207 passes gas into the stainless steel pipe 4 through the pressing block 209 and the sliding column 211, and detects the air pressure inside the stainless steel pipe 4 through the air pressure sensor 208, thereby detecting the leak tightness of the stainless steel pipe 4. When the intermittent lifting block 116 lifts the stainless steel pipe 4 to the next station, the docking seat 206 is at the far end. When the intermittent lifting block 116 disengages from the stainless steel pipe 4, the docking seat 206 is at the near end, located outside the stainless steel pipe 4, and the leak tightness of the stainless steel pipe 4 is detected.

[0043] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope of the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A leakage detection device for stainless steel pipes, comprising a conveying mechanism for intermittently conveying stainless steel pipes (4), characterized in that: The conveying mechanism includes a placement shell (101). There are two leak detection mechanisms for leak detection of stainless steel pipes (4) and one feeding mechanism for feeding on the conveying mechanism. The leak detection mechanism includes a side frame (201), and the side frame (201) is fixedly installed on the side of the placement shell (101). The feeding mechanism includes a feeding frame (301), and the feeding frame (301) is fixedly installed on the placement shell (101). There are two lifting rod modules on the placement shell (101). The lifting rod module includes a rotating plate (112) rotatably installed on the placement shell (101). An outer transmission wheel (110) is fixedly installed on the rotating plate (112). A fixed gear (111) is fixedly installed inside the placement shell (101). The rotating plate (112) is rotatably installed with the fixed gear (111). An eccentric rotating block (114) is rotatably installed on the rotating plate (112). A planetary gear (113) is eccentrically fixedly installed on the eccentric rotating block (114), and the planetary gear (113) meshes with the fixed gear (111). The leak detection mechanism includes a slide rail (205) fixedly installed on the side frame (201). A track wheel (202) is rotatably installed on the side frame (201). An inner transmission wheel (204) is fixedly installed on the track wheel (202). An outer transmission belt (203) is wound around the outer transmission wheel (110) and the inner transmission wheel (204). A docking seat (206) is slidably installed on the slide rail (205). A sliding column (211) is slidably installed inside the docking seat (206). A pressing block (209) is fixedly installed on the sliding column (211). A pressing block spring (210) is arranged between the pressing block (209) and the docking seat (206). A bottom guide post (212) is fixedly installed below the docking seat (206). A stepped groove (213) is arranged on the track wheel (202), and the bottom guide post (212) slides in the stepped groove (213). The pressing block (209) and the sliding column (211) are hollow, and an air outlet is arranged on the pressing block (209).

2. The leak detection device for stainless steel pipes according to claim 1, wherein: The conveying mechanism includes an inner motor (104) and a reduction box (105) fixedly installed inside the placement shell (101). The motor shaft of the inner motor (104) is connected to the input end of the reduction box (105). An intermediate rotating shaft (106) is rotatably installed on the placement shell (101), and the intermediate rotating shaft (106) is connected to the output end of the reduction box (105). Intermediate wheels (107) are fixedly installed at both ends of the intermediate rotating shaft (106).

3. The leakage detection device for stainless steel pipes according to claim 1, characterized in that: A rotating column (115) is fixedly installed on the eccentric rotating block (114).

4. An apparatus for detecting leakage of a stainless steel pipe according to claim 3, wherein: A switching motor (102) is fixedly installed on the placement shell (101). A switching baffle (103) is rotatably installed on the placement shell (101), and the switching baffle (103) is fixedly installed on the motor shaft of the switching motor (102).

5. A stainless steel pipe leakage detection device according to claim 4, characterized in that: The outer drive wheel (110) of the lifting rod module near the switching motor (102) and the intermediate wheel (107) are externally wound with a short drive belt (108), and the outer drive wheel (110) of the lifting rod module near the feeding rack (301) and the intermediate wheel (107) are externally wound with a long drive belt (109). An intermittent lifting block (116) is rotatably installed on the rotating column (115) of the two lifting rod modules. Notches for placing the stainless steel pipe (4) are provided on both the placing shell (101) and the intermittent lifting block (116).

6. The leak detection device for a stainless steel pipe according to claim 1, characterized in that: An inflator (207) is fixedly installed on the docking seat (206) of one leak detection mechanism, and a pressure sensor (208) is fixedly installed on the docking seat (206) of the other leak detection mechanism. The sliding column (211) is slidably installed with the inflator (207), and the sliding column (211) is slidably installed with the pressure sensor (208).

7. The leak detection device for a stainless steel pipe according to claim 1, wherein: The feeding mechanism includes a sliding pipe slope (302) fixedly installed on the feeding rack (301). A push plate (304) is slidably installed on the feeding rack (301). A push rod (303) is fixedly installed on the push plate (304). A rotating rod (305) is rotatably installed on the push plate (304). An upper rotating rod (306) is rotatably installed on the feeding rack (301). The upper rotating rod (306) is rotatably installed with the rotating rod (305). Two waist-shaped holes are provided on the upper rotating rod (306). A lower baffle (307) and an upper baffle (308) are slidably installed on the feeding rack (301). A return spring (309) is provided between the lower baffle (307) and the feeding rack (301). The upper baffle (308) is rotatably installed with the upper rotating rod (306) through the waist-shaped hole, and the lower baffle (307) is rotatably installed with the upper rotating rod (306) through the waist-shaped hole. Chamfers are provided on the upper and lower surfaces of the lower baffle (307) and the upper baffle (308). The stainless steel pipes (4) are stacked in the feeding rack (301).

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