Gas cylinder pressure resistance detection device and detection method

Abstract

The present invention discloses a gas cylinder pressure resistance detection device and detection method, which relates to the field of gas cylinder detection technology. The gas cylinder pressure resistance detection device comprises: a water pipe, which is used to be inserted into the gas cylinder and used to provide the gas cylinder with water required for pressure resistance detection, at least two hard pipes are provided on the periphery of the area near the lower end of the water pipe, the upper ends of the hard pipes are connected to the water pipes by hinge joints, and the hard pipes are connected to the water pipes through flexible pipes; an air pipe, which is sleeved on the periphery of the water pipe, and the lower end of the air pipe is inserted into the gas cylinder and is located in the bottle mouth area of ​​the gas cylinder; the gas cylinder pressure resistance detection device and detection method, by providing a branch pipe, a force-bearing pipe and a thrust mechanism, can enable the branch pipe to open after entering the gas cylinder, and after opening to the maximum angle, move downward in a vertical downward posture to be flush with the bottom surface of the gas cylinder, thereby ensuring that water can be completely discharged during the drainage stage, and significantly reducing the residual water in the gas cylinder.

Description

Technical Field

[0001] The present invention relates to the technical field of gas cylinder detection, and in particular to a gas cylinder pressure resistance detection device and a detection method. Background Art

[0002] Gas cylinders are a type of portable pressure vessel with a bottle-shaped main structure, generally filled with gas (which can be compressed gas, liquefied gas, dissolved gas, etc.). After the gas cylinder is produced, it is very important to test its pressure resistance to determine whether it is qualified.

[0003] Patent publication number CN118533610A proposes a gas cylinder pressure resistance detection device and a detection system using the device. In the patent, liquid is first injected into the gas cylinder, and then gas is injected to reduce the amount of gas injected. The pressure resistance of the gas cylinder can be obtained by detecting the gas pressure. After the detection is completed, the water is pressed out using the air pressure.

[0004] However, in actual application, this method makes it impossible to completely drain the water in the gas cylinder, and the gas cylinder needs to be manually turned upside down for secondary drainage. If manual secondary drainage is not performed, the inside of the gas cylinder will become damp and affect the subsequent use of gas. Summary of the Invention

[0005] In response to the shortcomings of the existing technology, the present invention provides a gas cylinder pressure resistance detection device and detection method, which solves the problem that the gas cylinder needs to be manually inverted for secondary drainage. If manual secondary drainage is not performed, the inside of the gas cylinder will become moist, affecting the subsequent use of the gas.

[0006] To achieve the above objectives, the present invention provides a gas cylinder pressure resistance detection device, comprising:

[0007] A water pipe, which is inserted into the gas cylinder and used to provide water required for pressure resistance testing of the gas cylinder. At least two rigid tubes are provided around the periphery of the area near the lower end of the water pipe. The upper ends of the rigid tubes are connected to the water pipe by a hinged joint. The rigid tubes are connected to the water pipe through a flexible tube.

[0008] The air pipe is arranged around the outer periphery of the water pipe, and the lower end of the air pipe is inserted into the gas cylinder and located in the bottle mouth area of ​​the gas cylinder. The air pipe is used to provide the gas required for pressure resistance testing to the gas cylinder. The gas can also press the water in the gas cylinder out of the gas cylinder through the hard pipe and the water pipe;

[0009] A thrust mechanism is assembled in the water pipe near the hard pipe, and can apply thrust to the hard pipe when the water pipe is subjected to force, causing the hard pipe to open relative to the water pipe;

[0010] The force-bearing tube is inserted at the lower end of the water pipe. The force-bearing tube can move upward under the pressure of the bottle bottom and exert force on the thrust mechanism to form a state in which the hard tube is opened.

[0011] Furthermore, the lower end of the hard tube has a bevel, and the bevel is a sawtooth structure;

[0012] When the rigid tube is opened to the maximum extent, the groove is parallel to the bottom surface of the gas cylinder;

[0013] The thrust mechanism also includes a non-opening section, which allows the hard tube to open to the maximum extent. As the water tube continues to move downward, the non-opening section no longer pushes the hard tube to open, causing the hard tube to move vertically downward with the groove parallel to the bottom surface of the gas cylinder until the groove fits into the bottom surface of the gas cylinder.

[0014] Furthermore, the thrust mechanism includes a push plate, the number of which is equal to that of the hard pipe and the position thereof is opposite, the push plate is a cutter-shaped structure, the handle of the push plate is located at the upper end of the cutter body, the upper end of the handle is rotatably assembled in the water pipe, and the side of the cutter body close to the center of the water pipe is an inclined surface;

[0015] The stressed tube can move relative to the water pipe when receiving pressure from the bottom of the gas cylinder, so that the upper end of the stressed tube generates pressure on the inclined surface of the cutter body, forming a state in which the push plate is stretched open by the stressed tube;

[0016] The non-opening section includes a slope located between the tool handle and the inclined surface of the tool body. When the push plate is opened to the maximum angle, the slope is in a vertical state, so that the opening angle of the push plate that continues to move downward no longer changes.

[0017] Furthermore, the thrust mechanism includes:

[0018] A rotating cylinder is located in a region of the water pipe opposite to the upper end of the rigid pipe, and has circumferential freedom within the water pipe;

[0019] Spokes, the number of which is equal to that of the hard tube, and a convex portion is provided at one end of the spoke away from the rotating cylinder, and the rotation of the rotating cylinder can cause the convex portion to push or not push the hard tube.

[0020] Furthermore, the thrust mechanism further comprises:

[0021] A movable tube, wherein the movable tube is fixed to the upper end of the force-bearing tube, and the rotating cylinder is sleeved on the outer periphery of the movable tube;

[0022] A spiral groove is provided on the periphery of the movable tube, and a slider adapted to the spiral groove is provided in the rotating cylinder, so that the movable tube moves upward relative to the water pipe to push the rotating cylinder to rotate;

[0023] The non-opening section includes a straight groove, which is arranged at the lower end of the spiral groove. When the slider reaches the lower end of the spiral groove, the opening angle of the hard tube reaches the maximum.

[0024] Furthermore, a return spring is provided inside the stressed tube, a lower fixed ring is fixed to the lower end of the return spring, and the lower fixed ring is fixed inside the stressed tube;

[0025] An upper moving ring is installed on the upper end of the reset spring, a through slot is provided on the side wall of the force-bearing tube, a guide bar is provided between the inner wall of the water pipe and the upper moving ring, and the guide bar passes through the through slot.

[0026] Furthermore, the water pipe includes a first pipe body and a second pipe body, the second pipe body is located at a lower end of the pipe body, the upper end of the second pipe body has an enlarged head, a flange plate is fixedly provided at the lower end of the pipe body, the enlarged head and the flange plate have only circumferential freedom, and the flexible pipe is fixedly connected to the enlarged head;

[0027] The outer surface of the enlarged head is provided with fins, and the enlarged head rotates when the fins are pushed by the airflow.

[0028] Furthermore, a guide plate is provided at one end of the air pipe exposed to the outside of the gas cylinder, a pressure plate is provided below the guide plate, a sealing gasket is fixed at the lower end of the pressure plate, and a compensation spring is provided between the upper end of the pressure plate and the guide plate;

[0029] The utility model also comprises a fuselage, the gas cylinder is positioned on the fuselage, and a telescopic component for driving the water pipe to rise and fall is arranged above the fuselage.

[0030] Furthermore, a water supply connector is provided on one side of the upper end of the tube body 1, and an air supply connector is provided on one side of the upper end of the air pipe.

[0031] On the other hand, the present invention also provides a method for detecting the pressure resistance of a gas cylinder, which is applicable to the above-mentioned gas cylinder pressure resistance detection device and is characterized in that it includes the following steps:

[0032] Step 1: Use the telescopic piece to insert the water pipe into the gas cylinder, and unfold the hard pipe during the process of the water pipe descending;

[0033] Step 2: Pass some water into the gas cylinder through the water supply connector and the water pipe, then close the water channel. Then, pass gas into the gas cylinder through the gas supply connector and the gas pipe. Use a detector to detect the pressure of the passed gas, and obtain the pressure resistance of the gas cylinder based on the pressure value.

[0034] Step 3: Open the water circuit and continue to introduce gas through the gas supply connector and the gas pipe, so that the gas in the gas cylinder presses the water into the hard pipe and is discharged through the water pipe and water supply connector to achieve emptying;

[0035] Step 4: Introduce hot air through the water supply joint and water pipe, discharge the hot air from the hard pipe, and dry the gas cylinder.

[0036] The present invention has the following beneficial effects:

[0037] The gas cylinder pressure resistance detection device and detection method, by providing a branch pipe, a force-bearing pipe and a thrust mechanism, can enable the branch pipe to open after entering the gas cylinder, and after opening to the maximum angle, move downward in a vertical downward posture until it is flush with the bottom surface of the gas cylinder, thereby ensuring that water can be completely discharged during the drainage stage and significantly reducing the water residue in the gas cylinder.

[0038] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is an overall diagram of the present invention;

[0040] Figure 2 For the present invention Figure 1 The main view;

[0041] Figure 3 This is a schematic diagram of the present invention in the state of detecting a gas cylinder;

[0042] Figure 4 For the present invention Figure 3 A local graph of

[0043] Figure 5 This is a diagram showing the initial state of the water pipe of the present invention being inserted into the gas cylinder;

[0044] Figure 6 This is a schematic diagram of the structure of the water pipe, branch pipe and air pipe of the present invention;

[0045] Figure 7 Schematic diagram of the structure of the thrust mechanism and the water pipe in the first embodiment of the present invention;

[0046] Figure 8 For the present invention Figure 7 A local graph of

[0047] Figure 9 For the present invention Figure 8 A magnified view of area A;

[0048] Figure 10 This is a diagram showing the state in which the hard tube of the present invention is expanded in the gas cylinder and moves vertically downward until it is flush with the bottom surface of the gas cylinder;

[0049] Figure 11 This is a partial structural diagram (exploded view) of embodiment 1 of the present invention;

[0050] Figure 12 This is a diagram showing the state of the hard tube of the present invention after being inserted into the gas cylinder, wherein: Figure 12 State (a) in the figure is the state when the rigid tube is initially inserted into the gas cylinder; Figure 12 State (b) in the figure is the state where the rigid tube begins to open; Figure 12State (c) in the figure is the state where the rigid tube is opened to the maximum angle; Figure 12 State (d) in the figure is when the rigid tube moves vertically downward until it is flush with the bottom surface of the gas cylinder;

[0051] Figure 13 This is a partial structural diagram of embodiment 1 of the present invention;

[0052] Figure 14 This is a partial structural diagram (cross-sectional view) of embodiment 1 of the present invention;

[0053] Figure 15 This is an exploded view of the air pipe and water pipe of the present invention;

[0054] Figure 16 This is a schematic structural diagram of the pipe body 2, branch pipes, and thrust mechanism in the second embodiment of the present invention (partially cut away);

[0055] Figure 17 This is a schematic structural diagram of the expanded hard tube in the second embodiment of the present invention;

[0056] Figure 18 It is a structural schematic diagram of the convex portion, the second tube body and the stress-bearing tube of the present invention.

[0057] In the figure, 1. fuselage; 2. detection chamber; 3. telescopic member; 31. power rod; 4. branch pipe; 41. rigid pipe; 411. groove; 42. flexible pipe; 43. hinge joint; 5. water pipe; 51. pipe body 1; 52. expansion head; 53. pipe body 2; 532. bearing seat; 54. flange plate; 6. thrust mechanism; 61. push plate; 611. slope; 62. pin; 63. bearing ring; 64. moving pipe; 65. straight groove; 66. spiral groove; 67. convex portion; 68. rotating cylinder; 681. Slider; 69. Spoke; 71. Pressure plate; 72. Sealing gasket; 81. Compensation spring; 82. Guide rod; 83. Limit head; 9. Force-bearing tube; 91. Through groove; 92. Lower fixed ring; 93. Return spring; 94. Guide strip; 95. Upper moving ring; 10. Air supply connector; 11. Water supply connector; 12. Positioning pressure plate; 13. Positioning cylinder; 14. Guide rail; 15. Air pipe; 151. Guide plate; 152. Guide hole; 16. Moving plate; 17. Limit ring; 18. Fin. DETAILED DESCRIPTION

[0058] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments 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 making creative efforts are within the scope of protection of the present invention.

[0059] In the description of the present invention, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0060] The following is based on Figures 1-18 The present invention describes a device and method for detecting the pressure resistance of a gas cylinder provided by an embodiment of the present invention.

[0061] In one aspect, the present invention provides a device for detecting the pressure resistance of a gas cylinder.

[0062] Example 1:

[0063] like Figures 1-4 As shown, the gas cylinder pressure resistance testing device in this embodiment includes a fuselage 1, which is an L-shaped structure as a whole. A testing chamber 2 is arranged at the bottom of the fuselage 1, and the testing chamber 2 is a box-shaped structure with an opening on the top surface. A positioning cylinder 13 is assembled on the side of the fuselage 1. The positioning cylinder 13 is opposite to the center line area of ​​the testing chamber 2, and a positioning pressure plate 12 is installed at the end of its piston rod. When the pressure of the gas cylinder needs to be tested, the gas cylinder to be tested is placed in the testing chamber 2, and the positioning cylinder 13 is controlled to extend. At this time, the positioning pressure plate 12 can press the gas cylinder to lock the position of the gas cylinder for subsequent testing.

[0064] like Figure 1-Figure 7 As shown, in order to test the pressure resistance of the gas cylinder, a water pipe 5 and an air pipe 15 are provided. The air pipe 15 is sleeved on the outer periphery of the water pipe 5 near the upper end. The water pipe 5 and the air pipe 15 are fixed to each other. The upper end of the air pipe 15 has a flange, which is fixed to the area near the upper end of the water pipe 5. The water pipe 5 and the air pipe 15 can be inserted into the gas cylinder. The lower end of the air pipe 15 is located in the bottle mouth area, and the lower end of the water pipe 5 is located in the bottle bottom area. The inner diameter of the air pipe 15 is larger than the outer diameter of the water pipe 5, so that the gas in the air pipe 15 can be ejected downward from the gap between the air pipe 15 and the water pipe 5.

[0065] A telescopic member 3 is installed above the fuselage 1, a power rod 31 is set at the lower end of the telescopic member 3, a movable plate 16 is fixed at the lower end of the power rod 31, and the upper end of the water pipe 5 is installed on the lower end of the movable plate 16 through a flange. When the telescopic member 3 is extended, the water pipe 5 and the air pipe 15 can be pushed downward by the movable plate 16, so that the water pipe 5 and the air pipe 15 are inserted into the gas cylinder.

[0066] Preferably, a guide rail 14 for guiding the movable plate 16 is provided on the body 1 .

[0067] Optionally, the telescopic member 3 is a pneumatic cylinder, a hydraulic cylinder or an electric push rod.

[0068] Specifically, the water pipe 5 is used to provide the gas cylinder with water required for pressure resistance testing, and the gas pipe 15 is used to provide the gas cylinder with gas required for pressure resistance testing. During injection, some water is injected first. After the water injection is completed, the water channel is closed, and then the gas is injected. A pressure sensor (not shown in the accompanying drawings) is assembled on the gas inlet pipeline. The pressure of the injected gas is detected by the pressure sensor, and the pressure resistance of the gas cylinder can be calculated based on the pressure value.

[0069] It should be noted that the reason why water is injected first and then the gas is injected is that the gas injection can be reduced in this way.

[0070] After the test is completed, the water in the gas cylinder needs to be emptied. Therefore, in order to ensure that the water in the gas cylinder can be emptied, a hard tube 41, a thrust mechanism 6 and a force-bearing tube 9 are provided. Figure 5-Figure 9 As shown, at least two hard tubes 41 are provided around the area near the lower end of the water pipe 5, and four hard tubes 41 are shown. The upper ends of the hard tubes 41 are connected to the water pipe 5 via a hinge joint 43. The hard tubes 41 are connected to the water pipe 5 via a flexible tube 42, so that the hard tubes 41 can change the angle between themselves and the water pipe 5 through the hinge joint 43. When the hard tubes 41 are in the Figure 5 In the state shown, the hard tube 41 and the water pipe 5 can be easily inserted into the gas cylinder. Figure 10 In the state shown, the hard tube 41 can be opened, so that when the air pressure empties the water, the water can enter the water pipe 5. The hard tube 41 has more distribution points, thereby avoiding the phenomenon that the water cannot be completely emptied due to a single tube.

[0071] Preferably, Figure 9 and Figure 13 As shown, a bearing seat 532 for bearing the hinged head 43 is provided on the outer surface of the water pipe 5 .

[0072] In order to achieve the opening of the hard tube 41, the above-mentioned thrust mechanism 6 is assembled in the area of ​​the water pipe 5 close to the hard tube 41. When the water pipe 5 is subjected to force, it can apply thrust to the hard tube 41, so that the hard tube 41 is opened relative to the water pipe 5. The force-bearing tube 9 is inserted at the lower end of the water pipe 5. When the entire water pipe 5 is pressed downward by the telescopic part 3, the force-bearing tube 9 will be subjected to the pressure from the bottom of the bottle, that is, the force-bearing tube 9 no longer moves downward, and the water pipe 5 continues to move downward, so that the force-bearing tube 9 can apply force to the thrust mechanism 6, thereby forming a state in which the hard tube 41 is opened.

[0073] Therefore, the hard tube 41 in the gas cylinder pressure resistance detection device provided in the embodiment of the present invention can be opened during the downward movement of the water pipe 5, so that in the drainage stage, the multi-point drainage hard tube 41 can drain water over a large range to ensure that the water in the gas cylinder can be emptied.

[0074] Furthermore, in order to ensure that the lower end opening of the hard tube 41 can face the bottom of the gas cylinder after it is opened, a bevel 411 is provided at the lower end of the hard tube 41. The bevel 411 has a serrated structure. When the above-mentioned thrust mechanism 6 opens the hard tube 41 to the maximum, the bevel 411 is parallel to the bottom surface of the gas cylinder. The thrust mechanism 6 also includes a non-opening section, so that after the hard tube 41 is opened to the maximum, as the water pipe 5 continues to move downward, the non-opening section no longer pushes the hard tube 41 to open, so that the hard tube 41 moves vertically downward with the bevel 411 parallel to the bottom surface of the gas cylinder until the bevel 411 is attached to the bottom surface of the gas cylinder.

[0075] Specifically, such as Figure 7-Figure 9 as well as Figure 11 As shown, the thrust mechanism 6 includes a push plate 61, the number of the push plates 61 is equal to that of the hard tube 41 and the position is opposite, and the push plate 61 is a cutter-shaped structure (refer to Figure 9 For better understanding), the handle of the push plate 61 is located at the upper end of the knife body, and the upper end of the handle is rotatably mounted on the pin 62, and the pin 62 is fixed to the inner wall of the water pipe 5 through the bearing ring 63, and the side of the knife body close to the center of the water pipe 5 is an inclined surface.

[0076] Preferably, a limiting ring 17 is provided in the area of ​​the outer periphery of the water pipe 5 opposite to the upper end of the hard tube 41 , and when the push plate 61 pushes the hard tube 41 to the maximum opening angle, the upper end of the hard tube 41 is supported by the limiting ring 17 .

[0077] Preferably, a long strip-shaped hole structure for the push plate 61 to open is provided along the axial direction on the outer surface of the water pipe 5 .

[0078] In this embodiment, when the force-bearing tube 9 is subjected to the pressure from the bottom of the gas cylinder, it can move relative to the water pipe 5, so that the upper end of the force-bearing tube 9 generates pressure on the inclined surface of the blade of the push plate 61, so that the push plate 61 rotates a certain angle along the pin 62, forming a state of being stretched open by each push plate 61, and each push plate 61 is gradually stretched open, which can push the hard tube 41, so that the hard tube 41 is stretched open, as shown in FIG. Figure 12 The change process from state (a) to state (c) in Figure 12 State (c) in the figure is a state where the hard tube 41 is completely expanded, and at this time, the groove 411 of the hard tube 41 is parallel to the bottom surface of the gas cylinder.

[0079] However, after being expanded, the bevel 411 of the hard tube 41 cannot fit on the bottom of the bottle, resulting in incomplete drainage. Therefore, the non-expanded section includes the slope 611 located between the handle and the inclined surface of the blade body. When the push plate 61 is not expanded (refer to Figure 7 The state shown), the slope 611 is in an inclined state. When the push plate 61 is fully opened to the maximum angle, the force tube 9 reaches the intersection of the slope 611 and the inclined surface of the blade body. At this time, the slope 611 is in a vertical state. Figure 12State (c) in the figure can be better understood. Therefore, in this state, as the water pipe 5 continues to move downward, the force-bearing pipe 9 no longer pushes the push plate 61, and the push plate 61 no longer opens the hard pipe 41, and its opening angle no longer changes. Its motion state is: as the water pipe 5 gradually moves downward until the groove 411 fits the bottom surface of the gas cylinder, as shown in FIG. Figure 12 The state change from state (c) to state (d).

[0080] Combine Figure 11 and Figure 14 As shown, in order to achieve the goal that after the water is drained and the water pipe 5 is lifted up by the telescopic member 3, the hard pipe 41 can be restored to the unopened state, thereby facilitating the hard pipe 41 to pass upward through the bottle mouth of the gas cylinder, a return spring 93 can be set on the force-bearing pipe 9, so that when the hard pipe 41 and the water pipe 5 go up, the force-bearing pipe 9 will not move up due to the action of the return spring 93, so that the force-bearing pipe 9 will no longer open the push plate 61, that is, the hard pipe 41 automatically resets. Specifically, a return spring 93 is provided inside the force-bearing pipe 9, and a lower fixed ring 92 is fixed at the lower end of the return spring 93. The lower fixed ring 92 is fixed in the force-bearing pipe 9, and an upper movable ring 95 is installed on the upper end of the return spring 93. The side wall of the force-bearing pipe 9 is provided with a through groove 91, and a guide bar 94 is fixed between the inner wall of the water pipe 5 and the upper movable ring 95, and the guide bar 94 passes through the through groove 91.

[0081] In this embodiment, when the water pipe 5 moves downward and the force-bearing tube 9 no longer moves downward, the water pipe 5 can drive the upper end of the return spring 93 to move downward through the guide bar 94 and the upper movable ring 95, so that the return spring 93 is in a compressed state. When the water pipe 5 moves upward, under the action of the return spring 93, the force-bearing tube 9 will not move upward.

[0082] like Figure 6 and Figure 13 As shown, the water pipe 5 includes a pipe body 1 51 and a pipe body 2 53. The pipe body 2 53 is located at the lower end of the pipe body 1 51. The upper end of the pipe body 2 53 has an enlarged head 52. A flange plate 54 is fixedly provided at the lower end of the pipe body 1 51. There is only circumferential freedom between the enlarged head 52 and the flange plate 54. The flexible pipe 42 is fixedly connected to the enlarged head 52.

[0083] An annular limiting slide rail is provided on the upper surface of the enlarged head 52 , and a limiting slider adapted to the limiting slide rail is provided on the lower surface of the flange plate 54 , thereby allowing circumferential freedom between the enlarged head 52 and the flange plate 54 without causing axial separation.

[0084] The reason why the water pipe 5 is divided into sections is to facilitate the installation of the air pipe 15 from the lower end of the pipe body 51 upward onto the pipe body 51. Figure 15 During assembly, the air pipe 15 is put upward on the pipe body 51 from the lower end of the pipe body 51. After being put in, the upper end of the air pipe 15 and the water pipe 5 are connected with a flange head.

[0085] The reason for providing the enlarged head 52 is to assemble the flexible tube 42. Preferably, the flexible tube 42 is a corrugated tube.

[0086] It is worth noting that the above-mentioned hard tube 41 , thrust mechanism 6 and force-bearing tube 9 are all assembled on the second tube body 53 .

[0087] Preferably, fins 18 are provided on the outer surface of the expansion head 52. When the fins 18 are pushed by the airflow, the expansion head 52 rotates, so that during the drainage stage, the hard tube 41 is in a rotating state, further expanding its drainage area, avoiding the situation where the bottom surface of the gas cylinder is not flat and cannot be completely drained.

[0088] Preferably, balls are provided at the lower ends of the serrations of the hard tube 41 and the force-bearing tube 9 to reduce wear.

[0089] like Figure 5 and Figure 6 As shown, in order to ensure that the gas cylinder is in a sealed state when testing the pressure resistance, a guide plate 151 is provided at the end of the gas pipe 15 exposed to the outside of the gas cylinder, and a pressure plate 71 is provided below the guide plate 151. A sealing gasket 72 is fixed to the lower end of the pressure plate 71, and a compensation spring 81 is provided between the upper end of the pressure plate 71 and the guide plate 151.

[0090] In this embodiment, when the telescopic member 3 drives the water pipe 5 to move downward, the sealing gasket 72 is blocked by the bottle mouth and is located at the bottle mouth. The pressure plate 71 and the sealing gasket 72 can move relative to the air pipe 15. The compensation spring 81 is compressed by the guide plate 151. The elastic potential energy of the compensation spring 81 can generate pressure on the pressure plate 71, so that the sealing gasket 72 is sealed at the bottle mouth.

[0091] Preferably, a guide rod 82 is sleeved in the compensation spring 81 , the lower end of the guide rod 82 is fixed to the upper surface of the pressure plate 71 , and the upper end of the guide rod 82 passes through the guide hole 152 on the guide plate 151 and is fixed with a limit head 83 .

[0092] It should be noted that in Figure 12 In state (d), that is, when the hard tube 41 is fully expanded, the compensation spring 81 is in a fully compressed state, and when the gas cylinder is inflated, the sealing failure caused by the gas pressure pushing the sealing gasket 72 is avoided.

[0093] Combine Figure 6As shown, preferably, a water supply connector 11 is provided on one side of the upper end of the tube body 51, and an air supply connector 10 is provided on one side of the upper end of the air pipe 15. It should be noted that the water supply connector 11 is preferably connected to a tee, so that on the one hand it can allow water to enter during the detection stage, and provide a hot air flow after the water is drained, which is used to dry the inner wall of the gas cylinder. The reason why the water supply connector 11 is used to provide the hot air flow is that it has more air outlets (multiple hard tubes 41 can be used as air outlets), and the drying efficiency is higher.

[0094] When in use (working), Figure 1 The gas cylinder is placed in the detection chamber 2 and the positioning cylinder 13 is used to lock the gas cylinder in the detection chamber 2.

[0095] Control the extension of the telescopic member 3 so that the telescopic member 3 pushes the water pipe 5 and the components thereon to move downward and insert the water pipe 5 into the gas cylinder until a Figure 5 In the state shown, the force-bearing tube 9 has just reached the bottom surface of the gas cylinder, and the sealing gasket 72 has just reached the bottle mouth. As the water pipe 5 continues to move downward, the compensation spring 81 is gradually compressed, and the sealing gasket 72 presses the bottle mouth tightly. At the same time, the force-bearing tube 9 is subjected to the pressure from the bottom of the gas cylinder and can move relative to the water pipe 5, so that the upper end of the force-bearing tube 9 generates pressure on the inclined surface of the blade body of the push plate 61, so that the push plate 61 rotates a certain angle along the pin 62, forming a state of being stretched open by each push plate 61. Each push plate 61 is gradually stretched open, which can push the hard tube 41, so that the hard tube 41 is stretched open. Figure 12 The change process from state (a) to state (c) in Figure 12 State (c) is the state where the hard tube 41 is fully expanded. At this time, the groove 411 of the hard tube 41 is parallel to the bottom surface of the gas cylinder. When the push plate 61 is fully expanded to the maximum angle, the force-bearing tube 9 reaches the intersection of the slope 611 and the inclined surface of the blade. At this time, the slope 611 is in a vertical state. Figure 12 State (c) in the figure can be better understood. In this state, the limit ring 17 is against the upper end of the hard tube 41. As the water pipe 5 continues to move downward, the force-bearing tube 9 no longer pushes the push plate 61, and the push plate 61 no longer opens the hard tube 41. Its opening angle no longer changes. Its motion state is: as the water pipe 5 gradually moves downward until the groove 411 fits the bottom surface of the gas cylinder, refer to Figure 12 The state change from state (c) to state (d).

[0096] Then water is filled into the gas cylinder through the water supply connector 11. 40%-50% of water can be filled in (the water level is greater than the height of the fins 18), and the waterway is blocked (the waterway can be blocked by assembling a sealing valve in the waterway. When blocking, the sealing valve is closed). Then gas is filled in from the gas supply connector 10, the pressure of the filled gas is detected, and the pressure resistance of the gas cylinder is calculated based on the air pressure. During the process of filling the gas, since the fins 18 are located underwater, the lower branch pipe 4 does not rotate.

[0097] After the inspection is completed, the water channel is opened and gas is continuously filled in. When the gas is ejected from the air pipe 15, the water can be pressed out of the hard tube 41 and enter the water pipe 5. As the water level drops and is lower than the position of the fin 18, the fin 18 is pushed by the airflow to drive the entire expansion head 52, the second tube body 53, the branch pipe 4 and the force-bearing tube 9 to rotate. During the rotation process, multiple 41 hard tubes perform multi-point drainage with good drainage effect. The discharged water is discharged from the water supply joint 11. The multi-point drainage of the hard tube 41 can achieve better emptying.

[0098] After emptying, hot air is blown in from the water supply connector 11 to dry the inside of the gas cylinder, and the hot air is discharged from the air pipe 15 and the gas supply connector 10.

[0099] Example 2:

[0100] Combine Figure 16-Figure 18 As shown, the difference between this embodiment and the first embodiment is that the thrust mechanism 6 includes a rotating cylinder 68 and spokes 69 .

[0101] Specifically, the rotating cylinder 68 is limited to the area opposite to the upper end of the hard tube 41 in the water pipe 5. The rotating cylinder 68 has circumferential freedom in the water pipe 5. The number of spokes 69 is equal to that of the hard tube 41. The end of the spoke 69 away from the rotating cylinder 68 is provided with a convex portion 67. The rotation of the rotating cylinder 68 can make the convex portion 67 push or not push the hard tube 41. Figure 16 The state shown is the state where the protrusion 67 has not yet pushed the hard tube 41. Figure 17 The state shown is a state in which the hard tube 41 is pushed.

[0102] The thrust mechanism 6 also includes a moving tube 64 and a spiral groove 66. The moving tube 64 is fixed to the upper end of the force-bearing tube 9. The rotating cylinder 68 is sleeved on the outer periphery of the moving tube 64. The spiral groove 66 is opened on the outer periphery of the moving tube 64. A slider 681 adapted to the spiral groove 66 is provided in the rotating cylinder 68, so that when the moving tube 64 moves upward relative to the water pipe 5, it pushes the rotating cylinder 68 to rotate.

[0103] In this embodiment, when the water pipe 5 moves downward, the force-bearing tube 9 moves upward due to the pressure from the bottom of the bottle. At this time, the spiral groove 66 pushes the rotating cylinder 68 to rotate through the slider 681, so that the rotating cylinder 68 can drive the protrusion 67 to rotate through the spokes 69, so that the protrusion 67 can approach or move away from the hard tube 41, thereby achieving its purpose of pushing or not pushing the hard tube 41.

[0104] The non-opening section in this embodiment includes a straight groove 65, which is provided at the lower end of the spiral groove 66. When the slider 681 reaches the lower end of the spiral groove 66, the opening angle of the hard tube 41 reaches the maximum. At this time, when the water pipe 5 continues to move downward, the slider 681 enters the straight groove 65, and the rotating cylinder 68 will no longer rotate. At this time, the hard tube 41 moves vertically downward with the groove 411 parallel to the bottom surface of the gas cylinder until the groove 411 is attached to the bottom surface of the gas cylinder.

[0105] On the other hand, the present invention also provides a method for detecting the pressure resistance of a gas cylinder, which is applicable to the above-mentioned gas cylinder pressure resistance detection device, comprising the following steps:

[0106] Step 1: Use the telescopic member 3 to insert the water pipe 5 into the gas cylinder, and unfold the hard tube 41 during the descent of the water pipe 5;

[0107] Step 2: After partially introducing water into the gas cylinder through the water supply connector 11 and the water pipe 5 and sealing the water channel, introduce gas into the gas cylinder through the gas supply connector 10 and the gas pipe 15. Use a detector to detect the pressure of the introduced gas, and obtain the pressure resistance performance of the gas cylinder based on the pressure value.

[0108] Step 3: Open the water circuit and continue to introduce gas through the gas supply connector 10 and the gas pipe 15, so that the gas in the gas cylinder presses the water into the hard tube 41 and is discharged through the water pipe 5 and the water supply connector 11 to achieve emptying;

[0109] Step 4: Hot air is introduced through the water supply connector 11 and the water pipe 5, and the hot air is discharged from the hard pipe 41 to dry the gas cylinder.

Claims

1. A gas cylinder pressure resistance detection device, characterized in that: include: A water pipe (5), the water pipe (5) is used to be inserted into the gas cylinder and used to provide water required for pressure resistance testing of the gas cylinder. At least two hard pipes (41) are provided on the periphery of the area near the lower end of the water pipe (5). The upper ends of the hard pipes (41) are connected to the water pipe (5) through a hinged joint (43). The hard pipe (41) is connected to the water pipe (5) through a flexible pipe (42); an air pipe (15), wherein the air pipe (15) is sleeved on the periphery of the water pipe (5), the lower end of the air pipe (15) is inserted into the gas cylinder and is located in the bottle mouth area of ​​the gas cylinder, and the air pipe (15) is used to provide the gas required for the pressure resistance test to the gas cylinder, and the gas can also press the water in the gas cylinder out of the gas cylinder through the hard pipe (41) and the water pipe (5); A thrust mechanism (6), wherein the thrust mechanism (6) is assembled in a region of the water pipe (5) close to the hard pipe (41), and when the water pipe (5) is subjected to force, the thrust mechanism (6) can apply a thrust to the hard pipe (41), causing the hard pipe (41) to open relative to the water pipe (5); A force-bearing tube (9), wherein the force-bearing tube (9) is inserted at the lower end of the water pipe (5), and the force-bearing tube (9) is able to move upward under the pressure of the bottle bottom and exert force on the thrust mechanism (6) to form a state in which the hard tube (41) is opened; The lower end of the hard tube (41) has a bevel (411), and the bevel (411) is a sawtooth structure; When the hard tube (41) is opened to the maximum, the groove (411) is parallel to the bottom surface of the gas cylinder; The thrust mechanism (6) further includes a non-opening section, which allows the hard tube (41) to open to the maximum extent and then, as the water tube (5) continues to move downward, the non-opening section no longer pushes the hard tube (41) to open, causing the hard tube (41) to move vertically downward with the groove (411) parallel to the bottom surface of the gas cylinder until the groove (411) is in contact with the bottom surface of the gas cylinder.

2. A gas cylinder pressure resistance detection device according to claim 1, characterized in that: The thrust mechanism (6) includes a push plate (61), the number of the push plates (61) is equal to that of the hard tube (41) and the positions are opposite, the push plate (61) is a cutter-shaped structure, the handle of the push plate (61) is located at the upper end of the knife body, the upper end of the handle is rotatably assembled in the water pipe (5), and the side of the knife body close to the center of the water pipe (5) is an inclined surface; The stressed tube (9) is capable of moving relative to the water tube (5) when receiving pressure from the bottom of the gas cylinder, so that the upper end of the stressed tube (9) generates pressure on the inclined surface of the knife body, forming a state in which the push plate (61) is stretched open by the stressed tube (9); The non-opening section includes a slope (611) located between the tool handle and the inclined surface of the tool body. When the push plate (61) is opened to a maximum angle, the slope (611) is in a vertical state, so that the opening angle of the push plate (61) that continues to move downward no longer changes.

3. A gas cylinder pressure resistance detection device according to claim 1, characterized in that: The thrust mechanism (6) comprises: A rotating cylinder (68), wherein the rotating cylinder (68) is limited to a region in the water pipe (5) opposite to the upper end of the hard pipe (41), and the rotating cylinder (68) has circumferential freedom in the water pipe (5); Spokes (69), the number of the spokes (69) is equal to that of the hard tube (41), and a convex portion (67) is provided at one end of the spoke (69) away from the rotating cylinder (68), and the rotation of the rotating cylinder (68) can cause the convex portion (67) to push or not push the hard tube (41).

4. A gas cylinder pressure resistance detection device according to claim 3, characterized in that: The thrust mechanism (6) further comprises: A movable tube (64), wherein the movable tube (64) is fixed to the upper end of the force-bearing tube (9), and the rotating cylinder (68) is sleeved on the periphery of the movable tube (64); A spiral groove (66) is provided on the periphery of the movable tube (64), and a slider (681) adapted to the spiral groove (66) is provided in the rotating cylinder (68), so that the movable tube (64) moves upward relative to the water pipe (5) to push the rotating cylinder (68) to rotate; The non-opening section includes a straight groove (65), which is provided at the lower end of the spiral groove (66). When the slider (681) reaches the lower end of the spiral groove (66), the opening angle of the hard tube (41) reaches a maximum.

5. A gas cylinder pressure resistance detection device according to any one of claims 1 to 4, characterized in that: A return spring (93) is provided inside the force-bearing tube (9), a lower fixed ring (92) is fixed to the lower end of the return spring (93), and the lower fixed ring (92) is fixed inside the force-bearing tube (9); An upper movable ring (95) is installed at the upper end of the return spring (93), a through groove (91) is provided on the side wall of the force-bearing tube (9), and a guide bar (94) is fixed between the inner wall of the water pipe (5) and the upper movable ring (95), and the guide bar (94) passes through the through groove (91).

6. A gas cylinder pressure resistance detection device according to claim 5, characterized in that: The water pipe (5) comprises a pipe body 1 (51) and a pipe body 2 (53), wherein the pipe body 2 (53) is located at the lower end of the pipe body 1 (51), and the upper end of the pipe body 2 (53) has an enlarged head (52), and a flange plate (54) is fixedly provided at the lower end of the pipe body 1 (51), and the enlarged head (52) and the flange plate (54) have only circumferential freedom, and the flexible pipe (42) is fixedly connected to the enlarged head (52); The outer surface of the enlarged head (52) is provided with fins (18), and when the fins (18) are pushed by the airflow, the enlarged head (52) rotates.

7. A gas cylinder pressure resistance detection device according to claim 6, characterized in that: A guide plate (151) is provided at one end of the air pipe (15) exposed outside the gas cylinder, a pressure plate (71) is provided below the guide plate (151), a sealing gasket (72) is fixed to the lower end of the pressure plate (71), and a compensation spring (81) is provided between the upper end of the pressure plate (71) and the guide plate (151); It also includes a fuselage (1), a gas cylinder is positioned on the fuselage (1), and a telescopic member (3) for driving the water pipe (5) to rise and fall is provided above the fuselage (1).

8. A gas cylinder pressure resistance detection device according to claim 7, characterized in that: A water supply connector (11) is provided on one side of the upper end of the tube body 1 (51), and an air supply connector (10) is provided on one side of the upper end of the air pipe (15).

9. A method for testing the pressure resistance of a gas cylinder, applicable to the gas cylinder pressure resistance testing device according to claim 8, characterized in that: The following steps are involved: Step 1: Use the telescopic member (3) to insert the water pipe (5) into the gas cylinder, and unfold the hard pipe (41) during the descent of the water pipe (5); Step 2: After partially introducing water into the gas cylinder through the water supply connector (11) and the water pipe (5), the water passage is closed, and then gas is introduced into the gas cylinder through the gas supply connector (10) and the gas pipe (15). The pressure of the introduced gas is detected by a detector, and the pressure resistance of the gas cylinder is obtained from the pressure value. Step 3: Open the water circuit and continue to introduce gas through the gas supply connector (10) and the gas pipe (15), so that the gas in the gas cylinder presses the water into the hard tube (41) and is discharged through the water pipe (5) and the water supply connector (11), thereby achieving emptying; Step 4: Hot air is introduced through the water supply connector (11) and the water pipe (5), and the hot air is discharged from the hard pipe (41) to dry the gas cylinder.

Images