Multi-station barrel air tightness detection device and detection method thereof

Abstract

The invention discloses a multi-station type barrel air tightness detection device and a detection method thereof, and relates to the technical field of barrel quality detection, the multi-station type barrel air tightness detection device comprises a base mechanism, a supporting mechanism and two positioning mechanisms, and the base mechanism comprises a rotating disc, a fixed disc and an inflation gun. Based on the manufacturing process of the barrel body, targeted detection is carried out on the strip-shaped welding seam formed by rolling the iron sheet plate on the barrel body and the round welding seam formed by splicing the barrel cover and the barrel bottom with the barrel body after the iron sheet plate is punched and formed, and according to the respective shape and position characteristics of the round welding seam and the strip-shaped welding seam, through different movement modes of the longitudinal trundles and the transverse trundles, the detection accuracy is improved. According to the air tightness detection device, accurate positioning of a circular welding seam and a strip-shaped welding seam is achieved respectively, it is ensured that leakage detection liquid can effectively cover the surfaces of the welding seams at different positions through the moving mode of the transverse trundles and the sliding seat, whether the key welding seam position meets the air tightness requirement or not is detected through air inflation and whether the leakage detection liquid bubbles or not, and the air tightness detection efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of barrel quality detection, and in particular to a multi-station barrel air tightness detection device and a detection method thereof. Background Art

[0002] The barrel is a storage container. For barrels that store flammable, explosive, toxic and harmful dangerous substances, such as gasoline barrels and chemical raw material barrels, once there is an airtightness problem in the barrel and leakage occurs, it may cause serious safety accidents such as fire and explosion, posing a huge threat to human life and property, and causing serious pollution to the environment. For ordinary materials, it may cause material leakage and spillage. Therefore, the airtightness detection of the barrel is very important for the storage of barrel materials.

[0003] The barrel body can be roughly divided into three parts: barrel cover, barrel body and barrel bottom. The barrel cover and barrel bottom are punched and formed by iron sheet, and the barrel body is rolled by iron sheet. If the barrel body is made of good quality and moderate thickness iron sheet, and the iron sheet itself has no obvious defects such as sand holes and cracks, it has a certain sealing performance under normal use and is not easy to leak. The formed barrel body has a strip weld formed by the rolling process, and the barrel cover and barrel bottom are formed by the punching process. The barrel cover and barrel bottom are spliced ​​with the barrel body to form a circular weld, so it is easy to cause leakage problems at the strip welds and circular welds.

[0004] The existing technology uses a pressure test method to detect the air tightness of the barrel. After the barrel is filled with gas and reaches a specific pressure, all openings are closed, and a pressure monitoring device is used to record the change of pressure in the barrel over time. The leakage rate is calculated by the rate of pressure drop. This detection method cannot determine the leaking part of the barrel, and the change in pressure requires waiting for a period of time, resulting in a long cycle and low efficiency of this detection method. Summary of the invention

[0005] The object of the present invention is to provide a multi-station barrel air tightness detection device and a detection method thereof to solve the problems raised by the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-station barrel air tightness detection device, comprising a base mechanism, a support mechanism and two positioning mechanisms, the base mechanism comprising a rotating disk, a fixed disk and an air charging gun, the support mechanism comprising a retaining ring, four fixed pillars are fixedly connected between the rotating disk and the retaining ring, a rotating column 2 is fixedly connected between the rotating disk and the retaining ring, the positioning mechanism comprises an annular seat, a longitudinal caster and a transverse caster, the annular seat is slidably connected to the outer side wall of the fixed pillar, the longitudinal casters are evenly spaced at the periphery of the annular seat, the longitudinal casters are rotatably connected to the annular seat, the transverse casters are evenly spaced at the periphery of the annular seat, the transverse casters are slidably connected to the annular seat, and a pressure sensor is installed inside the transverse caster; A first detection station is provided on one side of the positioning mechanism, and the first detection station is used to apply a leak detection liquid to the weld of the barrel cover or the barrel bottom; The side wall of the second rotating column is provided with a second inspection station, and the second inspection station is used to apply a leak detection liquid to the weld of the barrel body; An air pump is provided at the bottom of the rotating disk, and the bottom end of the air charging gun is connected to the air pump at the bottom of the rotating disk. The air charging gun is used to inject air into the interior of the barrel body.

[0007] Preferably, the first inspection station includes a storage box 2 and a bracket 1, the interior of the storage box 2 is used to store leak detection liquid, the storage box 2 is fixedly connected to the annular seat, the bracket 1 is fixedly connected to the outer shell of the horizontal caster, a hard pipe is installed inside the bracket 1, a hose is connected between the hard pipe and the storage box 2, and the other end of the hard pipe is connected to a nozzle 1.

[0008] Preferably, the second inspection station includes a sliding seat, which is slidably connected to the outer wall of the rotating column 2, the side wall of the sliding seat is fixedly connected to the bracket 2, the inner wall of the bracket 2 is installed with the nozzle 2, the top of the rotating disk is fixedly connected to the storage box 1, a conduit is connected between the storage box 1 and the nozzle 2, and the interior of the storage box 1 is used to store the leak detection liquid.

[0009] Preferably, one side of the annular seat is rotatably connected to an inner gear ring, and the inner side wall of the inner gear ring is meshed with a plurality of spur gears 2, and the spur gears 2 are evenly spaced along the periphery of the inner gear ring, and an adjustment component is provided at the bottom end of the spur gear 2, and the adjustment component includes a connecting rod 1, the top of the connecting rod 1 is fixedly connected to the spur gear 2, the bottom end of the connecting rod 1 is fixedly connected to a bevel gear 2, the side wall of the bevel gear 2 is meshed with a bevel gear 1, one end of the bevel gear 1 is fixedly connected to a spur gear 1, and one end of the longitudinal caster is fixedly connected to the spur gear 1.

[0010] Preferably, a rack is meshed on the side wall of the spur gear 1, one end of the rack is fixedly connected to the transverse caster, a pressure alarm is installed on the top of the rack, and the pressure alarm is connected to the pressure sensor signal.

[0011] Preferably, the inner wall of the inner gear ring is meshed with a spur gear four, the outer wall of the spur gear four is meshed with a spur gear three, the inner wall of the spur gear three is fixedly connected to a rotating column one, the top surface of the rotating disk is fixedly connected to a servo motor two, the output end of the servo motor two is fixedly connected to the rotating column one, the top surface of the rotating disk is fixedly connected to the servo motor one, the output end of the servo motor one is fixedly connected to a threaded column, the outer wall of the threaded column is meshed with a threaded seat, and a connecting rod two is fixedly connected between the threaded seat and the sliding seat.

[0012] Preferably, the fixed disk is installed on the ground, the rotating disk is rotatably connected to the top of the fixed disk, a servo motor three is installed inside the fixed disk, the output end of the servo motor three is fixedly connected to the inner bottom wall of the rotating disk, an opening is provided on one side of the storage box two, and a sealing cover is threadedly connected to the opening, and a sealing ring is installed between the sealing cover and the storage box two.

[0013] The present invention also discloses a multi-station barrel air tightness detection method, comprising the following steps: S1. Place the barrel; S2, weld positioning; S3, apply leak detection fluid; S4, inject air into the barrel; S5. Observe the bubbling of the leak detection liquid.

[0014] Preferably, in step S2, it also includes: S21. Positioning the welds of the barrel cover and barrel bottom: contacting the barrel body with the longitudinal casters, allowing the positioning mechanism to translate axially relative to the barrel body, and adjusting the two sets of positioning mechanisms to the barrel cover and barrel bottom to complete the positioning; S22. Positioning the weld of the barrel body: The lateral casters are in contact with the barrel body, so that the positioning mechanism rotates circumferentially relative to the barrel body, and the weld of the barrel body is positioned through the detection of the pressure sensor in the lateral casters and the alarm of the pressure alarm.

[0015] Preferably, in step S3, it also includes: S31. Apply leak detection liquid to the barrel cover and barrel bottom: contact the barrel body through the horizontal casters, let the positioning mechanism rotate circumferentially relative to the barrel body, open the valve to let the nozzle spray out the leak detection liquid, and the leak detection liquid is applied to the circular weld after the circumferential rotation of the positioning mechanism; S32. Apply leak detection liquid to the barrel body: adjust the height of the threaded seat by rotating the threaded column, move the sliding seat from one end of the barrel body to the other end, open the valve to allow the second nozzle to spray the leak detection liquid, and the second nozzle will move axially to coat the strip weld with the leak detection liquid.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Based on the manufacturing process of the barrel body, the present invention conducts targeted detection on the circular welds formed by welding the barrel body with rolled iron sheets and then splicing and welding the barrel body with the barrel cover and the barrel bottom with the barrel body after being punched and formed with the iron sheets. According to the shape and position characteristics of the circular welds and the strip welds, the circular welds and the strip welds are accurately positioned respectively through different movement modes of the longitudinal casters and the transverse casters. The movement mode of the transverse casters and the sliding seat ensures that the leak detection liquid can effectively cover the weld surfaces at different positions. Then, whether the key weld positions meet the air tightness requirements is detected by inflation and whether the leak detection liquid bubbles, thereby improving the air tightness detection efficiency.

[0017] 2. In the present invention, an adjustment component is arranged around the annular seat, and the meshing of the rack and the spur gear is utilized to allow one of the longitudinal casters or the transverse casters to contact the barrel body, thereby realizing flexible switching of the positioning mechanism on the outer wall of the barrel body along the axial translation or along the circumferential rotation, thereby meeting the movement requirements of the positioning mechanism when positioning circular welds and strip welds.

[0018] 3. In the present invention, an inner gear ring is arranged on one side of the annular seat, and the servo motor 2 drives the spur gear 3 to rotate. The spur gear 3 transmits power to the inner gear ring through the spur gear 4. The inner gear ring is on one side of the annular seat and is respectively meshed with multiple spur gears 2. This meshing relationship makes the inner gear ring a central transmission component, which can evenly transmit power to the multiple connected spur gears 2, and can synchronously adjust the positions of multiple longitudinal casters and transverse casters, and quickly and conveniently switch their matching states with the barrel body, making it more convenient to adjust the movement mode of the positioning mechanism.

[0019] 4. In the present invention, the pressure sensor is connected to the pressure alarm signal. Since the strip weld will cause the barrel surface to bulge slightly, the pressure on the lateral caster will change when the lateral caster passes through the bulge. When the pressure change exceeds the set threshold, the pressure alarm will trigger an alarm and send out a sound signal. The rotating column 2 is aligned with the strip weld according to the sound interval, which is convenient for applying leak detection liquid to the strip weld and performing air tightness detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of a multi-station barrel air tightness detection device of the present invention; Figure 2This is a schematic diagram of the internal structure of a fixed plate in a multi-station barrel air tightness detection device of the present invention; Figure 3 It is a structural schematic diagram of a base mechanism in a multi-station barrel air tightness detection device of the present invention; Figure 4 The structure of the positioning mechanism in the multi-station barrel air tightness detection device of the present invention is shown in FIG. Figure 1 ; Figure 5 For the present invention Figure 4 A magnified rendering of the local structure at point A in the middle; Figure 6 The structure of the positioning mechanism in the multi-station barrel air tightness detection device of the present invention is shown in FIG. Figure 2 ; Figure 7 It is a structural schematic diagram of an inner gear ring and a spur gear 2 in a multi-station barrel air tightness detection device of the present invention; Figure 8 The structure of the adjustment component in the multi-station barrel air tightness detection device of the present invention is schematically shown. Figure 1 ; Fig. 9 The structure of the adjustment component in the multi-station barrel air tightness detection device of the present invention is schematically shown. Figure 2 ; Fig.10 It is a flowchart of a multi-station barrel air tightness detection method of the present invention; Fig.11 The present invention provides a flowchart of weld positioning and leak detection liquid application in a multi-station barrel air tightness detection method.

[0021] In the figure: 1, base mechanism; 11, rotating disk; 12, fixed disk; 13, inflation gun; 2, servo motor 1; 3, servo motor 2; 4, storage box 1; 5, support mechanism; 51, retaining ring; 52, rotating column 1; 53, fixed support column; 54, rotating column 2; 55, threaded column; 6, positioning mechanism; 61, annular seat; 62, longitudinal caster; 63, transverse caster; 64, adjustment assembly; 641, bevel gear 1; 642, rack; 643, bevel gear 2 ;644, spur gear one; 645, pressure alarm; 646, connecting rod one; 65, internal gear ring; 66, spur gear two; 67, spur gear three; 68, spur gear four; 7, first inspection station; 71, storage box two; 72, sealing cover; 73, hose; 74, bracket one; 75, nozzle one; 76, hard pipe; 8, second inspection station; 81, nozzle two; 82, bracket two; 83, sliding seat; 84, connecting rod two; 85, threaded seat; 9, servo motor three. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the implementation regulations described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example 1: Reference Figure 1 - Fig. 9 As shown: a multi-station barrel air tightness detection device, including a base mechanism 1, a support mechanism 5 and two positioning mechanisms 6, the base mechanism 1 includes a rotating disk 11, a fixed disk 12 and an air gun 13, the fixed disk 12 is installed on the ground, the rotating disk 11 is rotatably connected to the top of the fixed disk 12, the support mechanism 5 includes a retaining ring 51, four fixed pillars 53 are fixedly connected between the rotating disk 11 and the retaining ring 51, the two positioning mechanisms 6 are arranged up and down, the two positioning mechanisms 6 respectively include an annular seat 61, a longitudinal caster 62 and a transverse caster 63, the annular seat 61 and the fixed pillar 53 The outer wall of the annular seat 61 is slidably connected, longitudinal casters 62 are evenly spaced around the periphery of the annular seat 61, the longitudinal casters 62 are rotatably connected to the annular seat 61, the annular seat 61 is translated along the axial direction of the barrel body through the longitudinal casters 62, transverse casters 63 are evenly spaced around the periphery of the annular seat 61, the transverse casters 63 are slidably connected to the annular seat 61, the annular seat 61 is rotated along the circumference of the barrel body through the transverse casters 63, a pressure sensor is installed inside the transverse casters 63, and the two annular seats 61 are clamped inward from the top and bottom of the barrel body respectively by means of the transverse casters 63, so as to achieve positioning; A first inspection station 7 is provided on one side of the positioning mechanism 6. The first inspection station 7 includes a storage box 2 71 and a bracket 1 74. The storage box 2 71 is fixedly connected to the annular seat 61. The bracket 1 74 is fixedly connected to the outer shell of the horizontal caster 63. A hard pipe 76 is installed inside the bracket 1 74. A hose 73 is connected between the hard pipe 76 and the storage box 2 71. The other end of the hard pipe 76 is connected to a nozzle 1 75. The first inspection station 7 is used to apply a leak detection liquid to the weld of the barrel cover or the barrel bottom. A rotating column 2 54 is fixedly connected between the rotating disk 11 and the retaining ring 51, and a second detection station 8 is arranged on the side wall of the rotating column 2 54. The second detection station 8 comprises a sliding seat 83, and the sliding seat 83 is slidably connected to the outer wall of the rotating column 2 54. A bracket 2 82 is fixedly connected to the side wall of the sliding seat 83, and a nozzle 2 81 is installed on the inner wall of the bracket 2 82. A storage box 1 4 is fixedly connected to the top of the rotating disk 11. A certain amount of leak detection liquid is stored inside the storage box 1 4 and the storage box 2 71. A conduit is connected between the storage box 1 4 and the nozzle 2 81. The second detection station 8 is used to apply leak detection liquid to the weld of the barrel body. The first inspection station 7 is used to position the circular weld and apply leak detection liquid, and the second inspection station 8 is used to position the strip weld and apply leak detection liquid. The two stations complete the positioning and leak detection liquid application functions under the action of the longitudinal casters 62 and the transverse casters 63, realizing the technical solution of multi-station air tightness detection.

[0024] An air pump is provided at the bottom of the rotating disk 11, and the bottom end of the air charging gun 13 is connected to the air pump. The air charging gun 13 is used to inject air into the interior of the barrel.

[0025] In this embodiment, in order to perform air tightness test on a strip weld and two circular welds of the barrel body, the barrel body is lifted by a hook, and the barrel cover is placed downward, so that the barrel body is placed downward from the central hollow position of the retaining ring 51, so that it is placed on the axis of the positioning mechanism 6. A frame can be placed on the rotating disk 11 to support the bottom of the barrel body to ensure the stability of the barrel body at the axis and avoid positional displacement during the test. The longitudinal casters 62 are spread inward so that multiple longitudinal casters 62 are overlapped on the side wall of the barrel body, and then according to the height of the barrel body, the longitudinal casters 62 are rolled on the barrel body to perform axial translation. The height positions of the upper and lower positioning mechanisms 6 are adjusted respectively, so that one positioning mechanism 6 is aligned with the barrel cover, and the other positioning mechanism 6 is aligned with the barrel bottom. Then, the longitudinal casters 62 are spread outward, and the transverse casters 63 are moved inward, so that multiple transverse casters 63 are overlapped on the side wall of the barrel body. The hoisted barrel body is kept stationary, and the rotating disk 11 below drives the upper fixed support 53 to rotate, and then the fixed support 53 drives the positioning mechanism 6 to rotate around the barrel body. While the transverse casters 63 rotate along the circumference of the barrel body, the nozzle 1 75 transports the leak detection liquid in the storage box 2 71 outward, so that the leak detection liquid applied on the barrel body is discharged. In addition, during the circumferential rotation of the lateral caster 63 along the barrel body, it will pass through the slightly raised strip weld of the barrel body. A pressure sensor is installed inside the lateral caster 63, so that it can sense the pressure change when passing the raised position, thereby determining the position of the weld. The positioning mechanism 6 rotates around the barrel body for several circles, allowing the leak detection liquid to be thickly applied to the circular weld. At the same time, the pressure of the pressure sensors in several lateral casters 63 is detected to locate the position of the strip weld. Then, at the end of the rotation of the positioning mechanism 6, the rotating column 54 is aligned to the position of the strip weld, and then the positioning mechanism 6 and the barrel body are relatively stationary. Move the sliding seat 83 on the rotating column 2 54 to make the nozzle 2 81 output the leak detection liquid in the storage box 1 4 to the outside and apply it to the strip weld. Move the sliding seat 83 from the bottom of the barrel to the position of the barrel cover so that the strip weld is evenly and completely covered with the leak detection liquid. Finally, connect the inflation gun 13 to the opening at the barrel cover, start the air pump, and inject air into the barrel. During the air injection process, observe whether bubbles are generated at the three places where the leak detection liquid is applied to determine whether the barrel body is leaking, so as to detect the air tightness of the barrel body. Place the entire equipment on the table of the detection station to obtain a good observation line of sight for the changes of the leak detection liquid at the circular weld below.

[0026] Embodiment 2: Figure 5 , Figure 6 , Figure 7 , Figure 8 and Fig. 9As shown, one side of the annular seat 61 is rotatably connected with an inner gear ring 65, and the inner side wall of the inner gear ring 65 is meshed with a plurality of spur gears 66, which are evenly spaced along the periphery of the inner gear ring 65. An adjusting assembly 64 is provided at the bottom end of the spur gear 66, and the adjusting assembly 64 includes a connecting rod 1 646, the top end of the connecting rod 1 646 penetrates the surface of the annular seat 61 and is fixedly connected to the spur gear 2 66, and the spur gear 2 66 is rotatably connected to the surface of the annular seat 61, and the bottom end of the connecting rod 1 646 is fixedly connected with a bevel gear 2 643, and the bevel gear 2 643 is meshed with a bevel gear 1 641, and the bevel gear 2 643 and the bevel gear 1 641 are perpendicular to each other, and one end of the bevel gear 1 641 is fixedly connected with a spur gear 1 644, and the bevel gear 1 641 and the spur gear 1 644 are located on the same axis, and one end of the longitudinal caster 62 is fixedly connected to the spur gear 1 644. The spur gear 644 is meshed with a rack 642, which is arranged at the axial position of the annular seat 61. The two side surfaces and the top surface of the rack 642 slide in the inner groove of the annular seat 61. One end of the rack 642 is fixedly connected to the transverse caster 63. A pressure alarm 645 is installed on the top of the rack 642, and the pressure alarm 645 is connected to the pressure sensor signal.

[0027] In this embodiment, the positioning mechanism 6 is controlled to translate axially or rotate circumferentially outside the barrel body, and an adjustment component 64 is evenly arranged at the periphery of the annular seat 61, wherein the rack 642 and the spur gear 1 644 are meshed with each other, and the rack 642 provides a translational movement effect, so that the rack 642 is connected to the transverse caster 63 to control the position of the transverse caster 63, and the spur gear 1 644 provides a rotational movement effect, so that the spur gear 1 644 is connected to the longitudinal caster 62 to control the position of the longitudinal caster 62. When the rack 642 moves inward, the transverse caster 63 contacts the barrel body, and the rack 642 drives the spur gear 644 to rotate, so that the spur gear 644 drives the longitudinal caster 62 to swing outward, and the longitudinal caster 62 is separated from the barrel body; when the rack 642 moves outward, the transverse caster 63 is separated from the barrel body, and the rack 642 drives the spur gear 644 to rotate, so that the spur gear 644 drives the longitudinal caster 62 to swing inward, and the longitudinal caster 62 contacts the barrel body, always keeping only a single wheel in contact with the barrel body, so that the positioning mechanism 6 performs one of the movements of axial translation or circumferential rotation on the barrel body. In order to locate the position of the strip weld, the pressure sensor and the pressure alarm 645 are connected by signal. When the pressure change exceeds the threshold, a sound alarm occurs. Whenever the lateral caster 63 passes the raised position of the weld, the pressure on the lateral caster 63 exceeds the threshold and an alarm sound is emitted. Based on the interval of the sound, before the positioning mechanism 6 stops rotating, the lateral caster 63 on the side of the rotating column 2 54 emits a sound alarm, and then continues to rotate the positioning mechanism 6 for half the interval time and stops, so that the rotating column 2 54 can be facing the strip weld.

[0028] Embodiment 3: According to Figure 1 , Figure 4 and Figure 7 As shown, the inner wall of the inner gear ring 65 is meshed with a spur gear four 68, which is rotatably connected in the connecting frame. The spur gear four 68 is installed on the annular seat 61 through the connecting frame. The spur gear four 68 is meshed with a spur gear three 67, and the inner wall of the spur gear three 67 is fixedly connected to the rotating column one 52. The top surface of the rotating disk 11 is fixedly connected to the servo motor two 3, and the output end of the servo motor two 3 is fixedly connected to the rotating column one 52.

[0029] In this embodiment, a plurality of longitudinal casters 62 and transverse casters 63 are evenly distributed on the periphery of the annular seat 61. In order to synchronously adjust the positions of the plurality of longitudinal casters 62 and transverse casters 63, an inner gear ring 65 is provided on one side of the annular seat 61. The inner gear ring 65 is respectively engaged with a plurality of spur gears 2 66. It is only necessary to start the servo motor 2 3, so that the servo motor 2 3 drives the rotating column 1 52 to rotate, and then the rotating column 1 52 drives the spur gear 3 67 to rotate. The spur gear 3 67 drives the inner gear ring 65 to rotate through the spur gear 4 68, so that the inner gear ring 65 drives the inner gear ring 65 to rotate. All the spur gears 66 rotate, and the spur gears 66 drive the bevel gears 643 to rotate through the connecting rod 646. Due to the meshing action of the bevel gears 641 and 643, the spur gears 644 rotate, thereby controlling the transverse casters 63 to translate inward or outward, and controlling the longitudinal casters 62 to swing inward or outward, thereby achieving the position control effect of all the longitudinal casters 62 and transverse casters 63, and facilitating the switching of the matching state of the longitudinal casters 62 and transverse casters 63 with the barrel body, so as to position the welds at different positions.

[0030] Embodiment 4: According to Figure 1 and Figure 3 As shown, the top surface of the rotating disk 11 is fixedly connected with a servo motor 1 2, the output end of the servo motor 1 2 is fixedly connected with a threaded column 55, the outer wall of the threaded column 55 is meshed with a threaded seat 85, and a connecting rod 2 84 is fixedly connected between the threaded seat 85 and the sliding seat 83. A servo motor 3 9 is installed inside the fixed disk 12, and the output end of the servo motor 3 9 is fixedly connected to the inner bottom wall of the rotating disk 11. An opening is opened on one side of the storage box 2 71, and a sealing cover 72 is threadedly connected at the opening, and a sealing ring is installed between the sealing cover 72 and the storage box 2 71.

[0031] In this embodiment, in order to control the nozzle 2 81 to apply the leak detection liquid on the strip weld, the sliding seat 83 and the threaded seat 85 are connected by the connecting rod 2 84, and then the servo motor 1 2 is started to make the servo motor 1 2 drive the threaded column 55 to rotate, and the threaded column 55 drives the threaded seat 85 connected with the thread to translate, and the threaded seat 85 will drive the sliding seat 83 on one side to translate. During the translation process of the sliding seat 83, the leak detection liquid in the storage box 1 4 is continuously transported through the conduit and applied to the strip weld through the nozzle 2 81.

[0032] In order to provide a circumferential rotation movement effect between the positioning mechanism 6 and the barrel body, a servo motor three 9 is installed inside the fixed disk 12. When the lateral caster 63 contacts the barrel body, the servo motor three 9 is started and drives the rotating disk 11 to rotate. The rotating disk 11 rotates relative to the fixed disk 12 and drives the upper fixed support 53 to rotate, thereby driving the positioning mechanism 6 to rotate circumferentially. The leakage detection liquid in the storage box one 4 and the storage box two 71 can be replenished at any time. Since the storage box two 71 connected to one group of the positioning mechanisms 6 is inverted, a sealing ring is installed at the sealing cover 72 to prevent leakage of the leakage detection liquid.

[0033] Embodiment 5: According to Fig.10 and Fig.11 As shown, a multi-station barrel air tightness detection method comprises the following steps: S1. Place the barrel: Place the barrel cover downward, connect the barrel bottom to the lifting tool, pass the barrel through the hollow of the retaining ring 51, and place the barrel at the center of the annular seat 61; S2. Weld positioning: S21, the longitudinal casters 62 are in contact with the barrel body, so that the positioning mechanism 6 is axially translated relative to the barrel body, and the two sets of positioning mechanisms 6 are adjusted to the barrel cover and the barrel bottom to complete the positioning; S22, the lateral caster 63 contacts the barrel body, allowing the positioning mechanism 6 to rotate circumferentially relative to the barrel body, and the positioning of the weld of the barrel body is completed through the detection of the pressure sensor in the lateral caster 63 and the alarm of the pressure alarm 645.

[0034] S3. Apply leak detection fluid: S31, contacting the barrel body with the lateral caster 63, allowing the positioning mechanism 6 to rotate circumferentially relative to the barrel body, opening the valve to allow the nozzle 75 to spray the leak detection liquid, and the leak detection liquid is coated on the circular weld after the circumferential rotation of the positioning mechanism 6; S32, adjust the height of the threaded seat 85 by rotating the threaded column 55, move the sliding seat 83 from one end of the barrel to the other end, open the valve to allow the nozzle 2 81 to spray the leak detection liquid, and the leak detection liquid is coated on the strip weld through the axial translation of the nozzle 2 81.

[0035] S4, injecting air into the barrel: connecting the inflation gun 13 to the opening of the barrel cover, and using an air pump to fill air into the barrel; S5. Observe the bubbling of the leak detection liquid: After the barrel is inflated, observe whether the leak detection liquid applied to the three welding positions bubbles. If bubbling occurs, it means that there is an airtightness problem at that location.

[0036] In this embodiment, two circular welds and one strip weld are positioned respectively through axial movement and circumferential rotation. At the same time, the circumferential rotation action can also be used to apply leak detection liquid to the circular welds. During the entire detection process, the processes of weld positioning and applying leak detection liquid cooperate with each other, which can achieve multiple weld tightness detection with higher efficiency.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A multi-station barrel air tightness detection device, comprising a base mechanism (1), a support mechanism (5) and two positioning mechanisms (6), characterized in that: The base mechanism (1) comprises a rotating disk (11), a fixed disk (12) and an air charging gun (13); the supporting mechanism (5) comprises a retaining ring (51); four fixed pillars (53) are fixedly connected between the rotating disk (11) and the retaining ring (51); a rotating column 2 (54) is fixedly connected between the rotating disk (11) and the retaining ring (51); the positioning mechanism (6) comprises an annular seat (61), longitudinal casters (62) and transverse casters (63); the annular seat (61) is slidably connected to the outer side wall of the fixed pillar (53); the longitudinal casters (62) are evenly spaced around the periphery of the annular seat (61); the longitudinal casters (62) are rotatably connected to the annular seat (61); the transverse casters (63) are evenly spaced around the periphery of the annular seat (61); the transverse casters (63) are slidably connected to the annular seat (61); a pressure sensor is installed inside the transverse casters (63); A first detection station (7) is provided on one side of the positioning mechanism (6), and the first detection station (7) is used to apply a leak detection liquid to the weld of the barrel cover or the barrel bottom; The side wall of the second rotating column (54) is provided with a second inspection station (8), and the second inspection station (8) is used to apply a leak detection liquid to the weld of the barrel body; An air pump is provided at the bottom of the rotating disk (11), and the bottom end of the air charging gun (13) is connected to the air pump. The air charging gun (13) is used to inject air into the interior of the barrel.

2. A multi-station barrel air tightness detection device according to claim 1, characterized in that: The first inspection station (7) comprises a second storage box (71) and a first bracket (74), wherein the interior of the second storage box (71) is used to store leak detection liquid, the second storage box (71) is fixedly connected to the annular seat (61), the first bracket (74) is fixedly connected to the outer shell of the transverse caster (63), a hard tube (76) is installed inside the first bracket (74), a hose (73) is connected between the hard tube (76) and the second storage box (71), and the other end of the hard tube (76) is connected to the first nozzle (75).

3. The multi-station barrel air tightness detection device according to claim 1 is characterized in that: The second detection station (8) comprises a sliding seat (83), the sliding seat (83) is slidably connected to the outer wall of the second rotating column (54), the side wall of the sliding seat (83) is fixedly connected to the second bracket (82), the inner wall of the second bracket (82) is installed with the second nozzle (81), the top of the rotating disk (11) is fixedly connected to the first storage box (4), a conduit is connected between the first storage box (4) and the second nozzle (81), and the interior of the first storage box (4) is used to store the leak detection liquid.

4. The multi-station barrel air tightness detection device according to claim 1 is characterized in that: One side of the annular seat (61) is rotatably connected to an inner gear ring (65), and the inner side wall of the inner gear ring (65) is meshed with a plurality of spur gears (66), and the spur gears (66) are evenly spaced along the periphery of the inner gear ring (65). An adjustment component (64) is provided at the bottom end of the spur gear (66), and the adjustment component (64) includes a connecting rod (646), the top end of the connecting rod (646) is fixedly connected to the spur gear (66), the bottom end of the connecting rod (646) is fixedly connected to a bevel gear (643), the side wall of the bevel gear (641) is meshed with a bevel gear (641), one end of the bevel gear (641) is fixedly connected to a spur gear (644), and one end of the longitudinal caster (62) is fixedly connected to the spur gear (644).

5. A multi-station barrel air tightness detection device according to claim 4, characterized in that: A rack (642) is meshed with the side wall of the spur gear 1 (644), one end of the rack (642) is fixedly connected to the lateral caster (63), a pressure alarm (645) is installed on the top of the rack (642), and the pressure alarm (645) is connected to the pressure sensor signal.

6. A multi-station barrel air tightness detection device according to claim 4, characterized in that: The inner side wall of the inner gear ring (65) is meshed with a spur gear four (68), the outer side wall of the spur gear four (68) is meshed with a spur gear three (67), the inner side wall of the spur gear three (67) is fixedly connected to a rotating column one (52), the top surface of the rotating disk (11) is fixedly connected to a servo motor two (3), the output end of the servo motor two (3) is fixedly connected to the rotating column one (52), the top surface of the rotating disk (11) is fixedly connected to a servo motor one (2), the output end of the servo motor one (2) is fixedly connected to a threaded column (55), the outer side wall of the threaded column (55) is meshed with a threaded seat (85), and a connecting rod two (84) is fixedly connected between the threaded seat (85) and the sliding seat (83).

7. The multi-station barrel air tightness detection device according to claim 2 is characterized in that: The fixed disk (12) is installed on the ground, the rotating disk (11) is rotatably connected to the top of the fixed disk (12), a servo motor three (9) is installed inside the fixed disk (12), and the output end of the servo motor three (9) is fixedly connected to the inner bottom wall of the rotating disk (11); An opening is provided on one side of the second storage box (71), and a sealing cover (72) is threadedly connected to the opening, and a sealing ring is installed between the sealing cover (72) and the second storage box (71).

8. A multi-station barrel air tightness detection method, using a multi-station barrel air tightness detection device as described in any one of claims 1 to 7, characterized in that: The following steps are involved: S1. Place the barrel; S2, weld positioning; S3, apply leak detection fluid; S4, inject air into the barrel; S5. Observe the bubbling of the leak detection liquid.

9. A multi-station barrel air tightness detection method according to claim 8, characterized in that: In step S2, it also includes: S21, positioning the weld seams of the barrel cover and barrel bottom: contacting the barrel body with the longitudinal casters (62), allowing the positioning mechanism (6) to translate axially relative to the barrel body, and adjusting the two sets of positioning mechanisms (6) to the barrel cover and barrel bottom to complete the positioning; S22, positioning the weld seam of the barrel body: the lateral caster (63) contacts the barrel body, allowing the positioning mechanism (6) to rotate circumferentially relative to the barrel body, and the positioning of the weld seam of the barrel body is completed through the detection of the pressure sensor in the lateral caster (63) and the alarm of the pressure alarm (645).

10. A multi-station barrel air tightness detection method according to claim 8, characterized in that: In step S3, it also includes: S31, applying leak detection liquid to the barrel cover and barrel bottom: contacting the barrel body through the lateral casters (63), allowing the positioning mechanism (6) to rotate circumferentially relative to the barrel body, opening the valve to allow the nozzle 1 (75) to spray the leak detection liquid, and the leak detection liquid is applied to the circular weld after the circumferential rotation of the positioning mechanism (6); S32, applying leak detection liquid to the barrel body: by rotating the threaded column (55) to adjust the height of the threaded seat (85), the sliding seat (83) is moved from one end of the barrel body to the other end, the valve is opened to allow the second nozzle (81) to spray the leak detection liquid, and the leak detection liquid is applied to the strip weld through the axial translation of the second nozzle (81).

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