A pressure regulating gas tightness detection device for steel cylinders

Abstract

The present invention discloses a pressure-regulated air tightness detection device for steel cylinders, which relates to the field of detection technology and comprises a loading box, wherein a lifting mechanism and a loading and unloading device are arranged in the loading box, a bottle body is placed on the lifting mechanism, a clamping mechanism corresponding to the bottle body is arranged on the top of the loading box, the clamping mechanism comprises an end seat fixedly arranged at one end of the top of the loading box, a movable seat is slidably connected to a fixed table, an end of the movable seat close to the oil cylinder is fixedly connected to a sleeve, a translation driving mechanism for driving the movable seat to move is arranged on the fixed table, an outer side of the loading box is fixedly connected to a pressure detection box, and a pressure-regulating detection mechanism is arranged in the pressure detection box; the present invention can realize convenient and labor-saving loading and unloading of the bottle body by arranging the lifting mechanism and the loading and unloading device, and can detect the air tightness of the bottle body with a plurality of air pressures of different pressures by arranging the pressure-regulating detection mechanism, and can detect the degree of air leakage of the bottle body, and has a good effect on the air tightness detection of the bottle body.

Description

Technical Field

[0001] The invention relates to the technical field of detection, in particular to a pressure-regulated air tightness detection device for a steel cylinder. Background Art

[0002] For steel cylinders used to store high-pressure gases, there are high requirements for their air tightness, so they need to be tested for air tightness after production.

[0003] As for the air tightness test of steel cylinders, inflating the cylinder to generate high pressure or extracting the gas in the cylinder to make it negative pressure is one of the means to test the air tightness of the cylinder. By monitoring the pressure change in the cylinder, it is possible to determine whether the cylinder is leaking. However, it is impossible to understand the degree of leakage in the cylinder and it is difficult to determine the air tightness level of the cylinder. This has certain shortcomings and needs further improvement. Summary of the invention

[0004] The present invention provides a pressure-regulated gas-tightness detection device for a steel cylinder, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A pressure-regulated gas tightness detection device for steel cylinders, comprising a loading box, a lifting mechanism and a loading and unloading device are arranged inside the loading box, a bottle body is placed on the lifting mechanism, a clamping mechanism corresponding to the bottle body is arranged on the top of the loading box, the clamping mechanism comprises an end seat fixedly arranged at one end of the top of the loading box, an oil cylinder is fixedly connected to the end seat, the other end of the top of the loading box is fixedly connected to a fixed platform, a moving seat is slidably connected to the fixed platform, an end of the moving seat close to the oil cylinder is fixedly connected to a sleeve, a translation driving mechanism for driving the moving seat to move is arranged on the fixed platform, an outer side of the loading box is fixedly connected to a pressure detection box, and a pressure regulating detection mechanism is arranged inside the pressure detection box;

[0007] The lifting mechanism includes a fixed base fixedly arranged at the bottom of the material loading box, two first moving blocks are slidably connected to the fixed base, one end of the fixed base is fixedly connected to the second driving motor, the output shaft of the second driving motor is coaxially fixedly connected to the first driving screw, the first driving screw passes through the two first moving blocks and is threadedly connected thereto, a lifting platform is arranged above the fixed base, a support rod is rotatably connected between the bottom end of the lifting platform and the two first moving blocks, and a placement seat is fixedly arranged at the top end of the lifting platform;

[0008] The loading and unloading device comprises a loading and unloading port arranged on the loading box, a pull-out plate is slidably connected in the loading and unloading port, a through slot for the lifting platform to pass through is provided on the pull-out plate, and end slots are provided on the pull-out plates at both ends of the through slot;

[0009] The pressure regulating detection mechanism includes a top cover fixedly arranged at the top of the pressure detection box, an internal cover fixedly connected to the pressure detection box, a plurality of internal partitions fixedly connected to the internal cover, the plurality of internal partitions divide the internal cover into a plurality of pressure regulating chambers, the outside of the internal cover is a detection chamber, a ventilation assembly is provided on the internal cover on one side of each pressure regulating chamber, and an air supply assembly for supplying air to the pressure regulating chamber and the detection chamber is provided in the pressure detection box.

[0010] As a preferred technical solution of the present invention, a placement groove for placing bottles is provided on the top of the lifting platform.

[0011] As a preferred technical solution of the present invention, a push-pull handle is fixedly connected to one side of the pull-out plate, guide rails are fixedly provided on both sides of the access opening, and side slide grooves corresponding to the guide rails are provided on both sides of the pull-out plate.

[0012] As a preferred technical solution of the present invention, the translation drive mechanism includes a first drive motor fixedly arranged at one end of the fixed platform, the output shaft of the first drive motor is fixedly connected to the second drive screw, the bottom of the moving seat is fixedly connected to the second moving block, and the second drive screw passes through the second moving block and is threadedly connected thereto.

[0013] As a preferred technical solution of the present invention, the end of the sleeve is fixedly connected to the first connecting tube, the first connecting tube passes through the movable seat and the second movable block and is fixedly connected to the second connecting tube, an air guide port is opened on the top cover, and the end of the second connecting tube away from the first connecting tube is fixedly connected to the air guide port.

[0014] As a preferred technical solution of the present invention, the air supply assembly includes a pressure pump fixedly arranged in the top cover, the output end of the pressure pump is fixedly connected to the air intake main pipe, the air intake main pipe passes through the internal cover and multiple internal partitions, the air intake main pipe in the detection chamber is fixedly connected to the first branch pipe, and the air intake main pipe in each pressure regulating chamber is fixedly connected to the second branch pipe.

[0015] As a preferred technical solution of the present invention, the ventilation assembly includes a fixed outer sleeve fixedly arranged outside the internal cover, a plug plate is inserted in the fixed outer sleeve, a first vent is opened on the fixed outer sleeve, a second vent corresponding to the first vent is opened on the plug plate, a spring is fixedly connected between one end of the plug plate and the inner end of the fixed outer sleeve, the other end of the plug plate is fixedly connected to a pressing block, an electric telescopic rod is fixedly connected to the pressure detection box on one side of each pressing block, and the telescopic end of the electric telescopic rod is fixedly connected to the pressing block.

[0016] The present invention has the following advantages: the present invention can realize convenient and labor-saving loading and unloading of the bottle body by arranging a lifting mechanism and a loading and unloading device; the air tightness of the bottle body can be detected with multiple air pressures of different pressures by arranging a pressure regulating detection mechanism, and the degree of air leakage of the bottle body can be detected, and the air tightness level of the steel cylinder can be determined, and the air tightness detection effect of the bottle body is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a steel cylinder pressure regulating air tightness detection device.

[0018] Figure 2 It is a structural schematic diagram of the lifting mechanism in the cylinder pressure regulating air tightness detection device.

[0019] Figure 3 It is a side view of the placement seat in the cylinder pressure regulating gas tightness detection device.

[0020] Figure 4 It is a structural schematic diagram of the unloading device in the cylinder pressure regulating gas tightness detection device.

[0021] Figure 5 It is a structural schematic diagram of the translation drive mechanism in the cylinder pressure regulating air tightness detection device.

[0022] Figure 6 It is a structural schematic diagram of the pressure regulating detection mechanism in the cylinder pressure regulating air tightness detection device.

[0023] Figure 7 It is a schematic diagram of the structure of the ventilation component in the cylinder pressure regulating air tightness detection device.

[0024] In the figure: 1, material loading box; 2, loading and unloading port; 3, loading and unloading device; 4, lifting mechanism; 5, bottle body; 6, end seat; 7, oil cylinder; 8, fixed platform; 9, moving seat; 10, envelope; 11, first drive motor; 12, pressure detection box; 13, first connecting pipe; 14, barometer; 15, fixed base; 16, first moving block; 17, second drive motor; 18, first drive screw; 19, lifting platform; 20, placement seat; 21, support rod; 22, placement slot; 23, pull-out plate; 24. Through slot; 25. End slot; 26. Push-pull handle; 27. Side slide slot; 28. Second drive screw; 29. ​​Second moving block; 30. Second connecting pipe; 31. Top cover; 32. Air guide port; 33. Internal cover; 34. Internal partition; 35. Pressure pump; 36. Air intake main pipe; 37. First branch pipe; 38. Second branch pipe; 39. Ventilation assembly; 40. Fixed jacket; 41. First vent; 42. Insert plate; 43. Second vent; 44. Spring; 45. Pressing block. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0026] It should be noted that the directions or positional relationships indicated by terms such as “center”, “up”, “down”, “left”, “right”, “vertical”, “horizontal”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limitations on the present invention.

[0027] See also Figure 1-7 , a steel cylinder pressure regulating air tightness detection device, comprising a loading box 1, a lifting mechanism 4 and a loading and unloading device 3 are arranged in the loading box 1, a bottle body 5 is placed on the lifting mechanism 4, a clamping mechanism corresponding to the bottle body 5 is arranged on the top of the loading box 1, the clamping mechanism comprises an end seat 6 fixedly arranged at one end of the top of the loading box 1, an oil cylinder 7 is fixedly connected to the end seat 6, the other end of the top of the loading box 1 is fixedly connected to a fixed platform 8, a moving seat 9 is slidably connected to the fixed platform 8, an end of the moving seat 9 close to the oil cylinder 7 is fixedly connected to a sleeve 10, a translation driving mechanism for driving the moving seat 9 to move is arranged on the fixed platform 8, an outer side of the loading box 1 is fixedly connected to a pressure detection box 12, and a pressure regulating detection mechanism is arranged in the pressure detection box 12;

[0028] The lifting mechanism 4 includes a fixed base 15 fixedly arranged at the bottom of the loading box 1, two first moving blocks 16 are slidably connected to the fixed base 15, one end of the fixed base 15 is fixedly connected to a second driving motor 17, the output shaft of the second driving motor 17 is coaxially fixedly connected to a first driving screw 18, the first driving screw 18 passes through the two first moving blocks 16 and is threadedly connected thereto, a lifting platform 19 is provided above the fixed base 15, a support rod 21 is rotatably connected between the bottom end of the lifting platform 19 and the two first moving blocks 16, and a placement seat 20 is fixedly provided at the top of the lifting platform 19;

[0029] The first driving screw 18 is provided with two threads in opposite directions on the outside, and the two first moving blocks 16 are respectively threadedly connected to the two threads. When the first driving screw 18 rotates, the two first moving blocks 16 can be driven to move closer to or farther from each other.

[0030] The loading and unloading device 3 includes a loading and unloading port 2 provided on the loading box 1, a pull-out plate 23 is slidably connected in the loading and unloading port 2, a through slot 24 for the lifting platform 19 to pass through is provided on the pull-out plate 23, and end slots 25 are provided on the pull-out plate 23 at both ends of the through slot 24;

[0031] The pressure regulating detection mechanism includes a top cover 31 fixedly arranged at the top end of the pressure detection box 12, an internal cover 33 is fixedly connected to the pressure detection box 12, a plurality of internal partitions 34 are fixedly connected to the internal cover 33, and the plurality of internal partitions 34 separate the internal cover 33 into a plurality of pressure regulating chambers. The outside of the internal cover 33 is a detection chamber, and a ventilation assembly 39 is provided on the internal cover 33 on one side of each pressure regulating chamber. An air supply assembly for supplying air to the pressure regulating chamber and the detection chamber is provided in the pressure detection box 12.

[0032] The top of the lifting platform 19 is provided with a placement groove 22 for placing the bottle body 5 .

[0033] A push-pull handle 26 is fixedly connected to one side of the pull-out plate 23 , guide rails are fixedly provided on both sides of the access opening 2 , and side sliding grooves 27 corresponding to the guide rails are provided on both sides of the pull-out plate 23 .

[0034] The translation drive mechanism includes a first drive motor 11 fixedly arranged at one end of the fixed platform 8, the output shaft of the first drive motor 11 is fixedly connected to the second drive screw 28, the bottom of the moving seat 9 is fixedly connected to the second moving block 29, and the second drive screw 28 passes through the second moving block 29 and is threadedly connected thereto.

[0035] The end of the envelope 10 is fixedly connected to the first connecting pipe 13, the first connecting pipe 13 passes through the moving seat 9 and the second moving block 29 and is fixedly connected to the second connecting pipe 30, the top cover 31 is provided with an air guide port 32, and one end of the second connecting pipe 30 away from the first connecting pipe 13 is fixedly connected to the air guide port 32. The second connecting pipe 30 is a retractable bellows.

[0036] The air supply assembly includes a pressure pump 35 fixedly arranged in the top cover 31, the output end of the pressure pump 35 is fixedly connected to the air intake pipe 36, the air intake pipe 36 passes through the internal cover 33 and multiple internal partitions 34, the air intake pipe 36 in the detection chamber is fixedly connected to the first branch pipe 37, and the air intake pipe 36 in each pressure regulating chamber is fixedly connected to the second branch pipe 38.

[0037] The ventilation assembly 39 includes a fixed sleeve 40 fixedly arranged outside the internal cover 33, a plug plate 42 is inserted in the fixed sleeve 40, a first vent 41 is opened on the fixed sleeve 40, a second vent 43 corresponding to the first vent 41 is opened on the plug plate 42, a spring 44 is fixedly connected between one end of the plug plate 42 and the inner end of the fixed sleeve 40, and the other end of the plug plate 42 is fixedly connected to a pressing block 45, and an electric telescopic rod is fixedly connected to the pressure detection box 12 on one side of each pressing block, and the telescopic end of the electric telescopic rod is fixedly connected to the pressing block.

[0038] The first connecting pipe 13 , the air intake main pipe 36 , the first branch pipe 37 and the second branch pipe 38 are all provided with solenoid valves, and the pressure detection box 12 is provided with a controller for controlling the on and off of the above-mentioned multiple solenoid valves.

[0039] During the implementation of the present invention, the initial positions of the lifting platform 19 and the placement seat 20 are located below the pull-out plate 23. When the steel cylinder needs to be inspected, the steel cylinder is first sent horizontally into the access port 2, and then the steel cylinder is pushed onto the pull-out plate 23. At this time, the two ends of the steel cylinder are respectively located in the two end grooves 25, and then the second drive motor 17 is started to drive the first drive screw 18 to rotate, so that the two first moving blocks 16 move closer to each other, and then the two support rods 21 are rotated to lift the lifting platform 19, and the lifting platform 19 moves up through the through groove 24. The two placement seats 20 receive the steel cylinder and continue to move up until the steel cylinder is located above the loading box 1, and then the oil cylinder 7 is controlled to extend to push one end of the steel cylinder, and the first drive motor 11 is started to drive the second drive screw 28 to rotate, so that the second moving block 29 drives the moving seat 9 and the envelope 10 moves and applies pressure to the other end of the cylinder. At this time, the seal 10 is put on the bottle mouth of the cylinder, and then the pressure pump 35 is started to input air into the detection chamber and the pressure regulating chamber to increase the air pressure value, and the on-off of the first solenoid valve and the second solenoid valve is controlled to make the air pressure value in the pressure regulating chamber greater than the air pressure value in the detection chamber. The air pressure values ​​in multiple pressure regulating chambers are different. First, the initial air pressure value in the detection chamber is used to test the air tightness of the cylinder, and the air pressure value change of the pressure gauge 14 is observed within a certain period of time. If there is no change, the gas is put into the detection chamber in order from low to high in each pressure regulating chamber. A test is performed after each gas in a pressure regulating chamber is released until it is observed that the air pressure on the pressure gauge 14 gradually decreases within a certain period of time. It can be proved that there is a leak in the cylinder and the degree of leakage can be judged.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A pressure-regulated gas-tightness detection device for a steel cylinder, comprising a loading box (1), characterized in that: A lifting mechanism (4) and a loading and unloading device (3) are provided in the loading box (1), a bottle body (5) is placed on the lifting mechanism (4), a clamping mechanism corresponding to the bottle body (5) is provided on the top of the loading box (1), the clamping mechanism comprises an end seat (6) fixedly arranged at one end of the top of the loading box (1), an oil cylinder (7) is fixedly connected to the end seat (6), the other end of the top of the loading box (1) is fixedly connected to a fixed platform (8), a movable seat (9) is slidably connected to the fixed platform (8), one end of the movable seat (9) close to the oil cylinder (7) is fixedly connected to a sleeve (10), a translation driving mechanism for driving the movable seat (9) to move is provided on the fixed platform (8), an outer side of the loading box (1) is fixedly connected to a pressure detection box (12), and a pressure regulating detection mechanism is provided in the pressure detection box (12); The lifting mechanism (4) comprises a fixed base (15) fixedly arranged at the bottom of the loading box (1), two first moving blocks (16) are slidably connected to the fixed base (15), one end of the fixed base (15) is fixedly connected to a second driving motor (17), the output shaft of the second driving motor (17) is coaxially fixedly connected to a first driving screw (18), the first driving screw (18) passes through the two first moving blocks (16) and is threadedly connected thereto, a lifting platform (19) is provided above the fixed base (15), a support rod (21) is rotatably connected between the bottom end of the lifting platform (19) and the two first moving blocks (16), and a placement seat (20) is fixedly provided at the top end of the lifting platform (19); The loading and unloading device (3) comprises a loading and unloading port (2) arranged on the loading box (1), a drawer plate (23) is slidably connected in the loading and unloading port (2), a through slot (24) for the lifting platform (19) to pass through is provided on the drawer plate (23), and end slots (25) are provided on the drawer plate (23) at both ends of the through slot (24); The pressure regulating detection mechanism comprises a top cover (31) fixedly arranged at the top end of the pressure detection box (12), an internal cover (33) fixedly connected to the pressure detection box (12), a plurality of internal partitions (34) fixedly connected to the internal cover (33), the plurality of internal partitions (34) dividing the internal cover (33) into a plurality of pressure regulating chambers, the outside of the internal cover (33) being a detection chamber, a ventilation assembly (39) being provided on the internal cover (33) on one side of each pressure regulating chamber, and an air supply assembly for supplying air to the pressure regulating chamber and the detection chamber being provided in the pressure detection box (12); The ventilation assembly (39) comprises a fixed outer sleeve (40) fixedly arranged outside the inner cover (33), a plug plate (42) inserted in the fixed outer sleeve (40), a first vent (41) formed on the fixed outer sleeve (40), a second vent (43) corresponding to the first vent (41) formed on the plug plate (42), a spring (44) fixedly connected between one end of the plug plate (42) and the inner end of the fixed outer sleeve (40), the other end of the plug plate (42) fixedly connected to a pressing block (45), an electric telescopic rod fixedly connected to the pressure detection box (12) on one side of each pressing block, and the telescopic end of the electric telescopic rod fixedly connected to the pressing block.

2. The cylinder pressure regulating air tightness detection device according to claim 1 is characterized in that: The top of the lifting platform (19) is provided with a placement groove (22) for placing the bottle body (5).

3. The cylinder pressure regulating air tightness detection device according to claim 1, characterized in that: A push-pull handle (26) is fixedly connected to one side of the pull-out plate (23), guide rails are fixedly provided on both sides of the access opening (2), and side sliding grooves (27) corresponding to the guide rails are provided on both sides of the pull-out plate (23).

4. The cylinder pressure regulating air tightness detection device according to claim 1, characterized in that: The translation drive mechanism comprises a first drive motor (11) fixedly arranged at one end of a fixed platform (8), the output shaft of the first drive motor (11) being fixedly connected to a second drive screw (28), the bottom of the movable seat (9) being fixedly connected to a second movable block (29), and the second drive screw (28) passing through the second movable block (29) and being threadedly connected thereto.

5. The cylinder pressure regulating air tightness detection device according to claim 4, characterized in that: The end of the envelope (10) is fixedly connected to the first connecting tube (13), the first connecting tube (13) passes through the movable seat (9) and the second movable block (29) and is fixedly connected to the second connecting tube (30), an air guide port (32) is provided on the top cover (31), and one end of the second connecting tube (30) away from the first connecting tube (13) is fixedly connected to the air guide port (32).

6. The cylinder pressure regulating air tightness detection device according to claim 5, characterized in that: The air supply assembly comprises a pressure pump (35) fixedly arranged in the top cover (31); the output end of the pressure pump (35) is fixedly connected to an air intake pipe (36); the air intake pipe (36) passes through the internal cover (33) and a plurality of internal partitions (34); the air intake pipe (36) in the detection chamber is fixedly connected to a first branch pipe (37); and the air intake pipe (36) in each pressure regulating chamber is fixedly connected to a second branch pipe (38).

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