Gas cylinder pressure resistance testing device

Abstract

The utility model discloses a pressure resistance testing device for a gas cylinder. The pressure resistance testing device comprises an outer protective cover and an annular structure, the inner protective cover is of an annular structure and is coaxially sleeved with the outer protective cover; an annular cavity is formed between the outer protective cover and the inner protective cover; the plane rotating assembly is arranged in the annular cavity and circumferentially rotates around the axis of the inner protective cover; the at least four accommodating seats are uniformly arranged on the upper surface of the plane rotating assembly in a circumferential array manner and are used for accommodating and limiting gas cylinders to be detected; the partition blocks are the same as the accommodating seats in number, are uniformly and fixedly arranged in the annular cavity in a circumferential array manner, and are alternately arranged with the accommodating seats one by one; the accommodating seat can freely penetrate through the partition block; a notch is formed in the outer protective cover; the width of each notch does not exceed the interval between every two adjacent partition blocks. And the pressurizing assembly is arranged above the outer protective cover and can be communicated with the upper end of the gas cylinder in each accommodating seat. According to the utility model, continuous assembly line type pressure resistance detection can be carried out on the gas cylinder, and the detection effect and efficiency are ensured.

Description

Technical Field

[0001] This utility model relates to the field of gas cylinder testing, specifically to a gas cylinder pressure resistance testing device. Background Technology

[0002] As containers for storing gases, gas cylinders' strength and safety are directly related to people's lives and property. Hydrostatic testing of gas cylinders is an essential part of cylinder manufacturing and periodic inspection, crucial for ensuring the overall strength and safety of the cylinders. During hydrostatic testing, water at a certain pressure is applied inside the cylinder to verify whether it meets design requirements and operating conditions. The main purpose of hydrostatic testing is to simulate the pressure environment of the cylinder under working conditions, checking for defects, cracks, or other damage to its overall structure, ensuring that the cylinder will not leak, burst, or cause other safety accidents during normal use.

[0003] There are two main methods for testing the water pressure of gas cylinders: the volumetric deformation method and the pressure resistance test method. The volumetric deformation method assesses the overall strength of the gas cylinder by measuring the volume change during the filling and pressurization process. This method can accurately reflect the deformation of the gas cylinder, but the operation is relatively complex and requires specialized equipment and technicians. The pressure resistance test method assesses the strength by applying water at a certain pressure to the gas cylinder and observing whether leakage, deformation, or rupture occurs. This method is simple to operate and suitable for the inspection of most gas cylinders.

[0004] The process of testing water pressure in gas cylinders involves a series of steps: filling the cylinder with water to release air or vice versa, pressurizing, holding the pressure, observing, depressurizing, and draining water. This entire process is time-consuming. Currently, gas cylinder water pressure testing typically uses a single-cylinder independent testing method, which is slow and inefficient. Utility Model Content

[0005] In view of the above-mentioned deficiencies of the prior art, the purpose of this utility model is to provide a gas cylinder pressure resistance testing device that can perform continuous, assembly-line pressure resistance testing on gas cylinders, ensuring testing effectiveness and efficiency.

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A gas cylinder pressure resistance testing device, comprising:

[0008] Outer protective cover, ring structure;

[0009] The inner protective cover has a ring structure and is coaxially fitted inside the outer protective cover; an annular cavity is formed between the outer and inner protective covers.

[0010] A planar rotating component is set inside an annular cavity and rotates circumferentially around the axis of the inner protective cover.

[0011] At least four accommodating seats are arranged in a uniform circumferential array on the upper surface of the planar rotating component to accommodate and limit the gas cylinder to be tested;

[0012] The same number of partitions as the accommodating seats are fixedly arranged in a uniform circumferential array within the annular cavity, alternating with the accommodating seats; the accommodating seats can freely pass through the partitions; the outer protective cover has a notch; the width of the notch does not exceed the interval between two adjacent partitions;

[0013] The pressurization assembly, located above the outer protective cover, can communicate with the upper end of the gas cylinder in each housing.

[0014] Furthermore, the planar rotation assembly includes:

[0015] The support base is ring-shaped and is set inside the annular cavity;

[0016] The pressure bearing is mounted on the upper surface of the support base, with the outer sleeve on the outside of the inner protective cover and the inner sleeve on the inside of the outer protective cover.

[0017] A rotating ring is disposed on the upper surface of the pressure bearing, with an outer sleeve on the outside of the inner protective cover and an inner sleeve on the inside of the outer protective cover; the receiving seat is disposed on the upper surface of the rotating ring;

[0018] The drive mechanism is connected to the rotating ring drive, which drives the rotating ring to rotate circumferentially around the axis of the inner protective cover.

[0019] Furthermore, the planar rotation assembly also includes:

[0020] The outer slewing bearing is sleeved on the outer cylindrical surface of the slewing ring, and the outer ring is tightly fitted to the inner side of the outer protective cover.

[0021] The inner slewing bearing is fitted inside the inner protective cover, and the outer ring is in close contact with the inner cylindrical surface of the slewing ring.

[0022] Furthermore, the lower end of the inner cylindrical surface of the rotating ring is provided with an annular notch; the side of the notch is provided with annular teeth;

[0023] The drive mechanism includes;

[0024] The drive motor is positioned vertically upwards within the annular cavity;

[0025] The gear is coaxially connected to the drive motor and meshes with a ring gear.

[0026] Furthermore, the accommodating seat includes a base and an inner padding layer; the upper end of the base is provided with a groove, and the inner surface of the groove is provided with an inner padding layer; the inner wall of the outer protective cover of the base is a downward flip-down plate structure; the downward flip-down plate structure is fixed to the rest of the base by a pin.

[0027] Furthermore, the pressurization assembly includes:

[0028] Booster pump;

[0029] The water outlet pipe is coaxially installed above the inner protective cover, and its upper end is connected to the water outlet of the booster pump.

[0030] The main rotary joint connects at its upper end to the lower end of the outlet pipe.

[0031] The water distribution head is connected to the lower end of the main rotary joint;

[0032] The same number of water control components as the number of housings are arranged radially in a uniform circumferential pattern around the axis of the inner protective cover, with the head end connected to the water distribution head and the tail end located directly above each housing.

[0033] Furthermore, the water control component includes:

[0034] The outlet pipe is L-shaped, with its head connected to the water distribution head.

[0035] The secondary rotary joint is connected at the upper end to the tail end of the outlet pipe;

[0036] The connecting pipe has its upper end connected to the lower end of the secondary rotary joint, and its lower end is provided with an external thread for connecting to the gas cylinder; the outer surface of the connecting pipe is provided with a hexagonal prism-shaped protrusion.

[0037] The inlet control valve is installed on the connecting pipe;

[0038] The pressure gauge is installed on the connecting pipe.

[0039] Furthermore, a partition is provided in the lower part of the connecting pipe, dividing the lower part of the connecting pipe into separate entry spaces and exit spaces; the entry space is connected to the upper part of the connecting pipe;

[0040] The connecting pipe is equipped with a branch pipe that communicates with the external drainage space; the branch pipe is equipped with a drainage control valve.

[0041] Furthermore, the dividing grid includes:

[0042] The inner rod is fixed at one end to the outer surface of the inner protective cover; the axis of the inner rod is perpendicular to the axis of the inner protective cover; the height of the inner rod is not lower than the upper end of the gas cylinder after the gas cylinder is placed in the accommodating seat.

[0043] The outer rod is fixed at one end to the inner surface of the outer protective cover; the axis of the outer rod is collinear with the axis of the inner rod; a gap is left between the end faces of the outer rod and the inner rod for the water pipe to pass through.

[0044] A flexible baffle, mounted on the inner and outer rods, completely separates the annular cavity; the lower end of the flexible baffle is lower than the upper end of the receiving seat.

[0045] Furthermore, the inlet control valve and the outlet control valve are electromagnetic control valves, and the pressure gauge is a pressure gauge with electrical signal transmission.

[0046] Due to the adoption of the above technical solution, this utility model has the following advantages:

[0047] 1. The detection line is set as a ring by the planar rotating component. The planar rotating component drives the accommodating seat to move, so that the gas cylinder to be tested goes through the process of injection pressurization, pressure stabilization and pressure release in sequence.

[0048] 2. Each gas cylinder to be tested is separated by an outer protective cover, an inner protective cover, and partitions to prevent injury from gas cylinder fragments that may break during the testing process.

[0049] Other advantages, objectives and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination or study, or may be taught from the practice of this invention. Attached Figure Description

[0050] The accompanying drawings of this utility model are described below:

[0051] Figure 1 This is a front view schematic diagram of the gas cylinder pressure resistance testing device in this embodiment.

[0052] Figure 2 for Figure 1 Enlarged structural diagram at point A in the middle.

[0053] Figure 3 This is a top view of the gas cylinder pressure resistance testing device in this embodiment.

[0054] Figure 4 for Figure 3 Enlarged structural diagram at point B.

[0055] Figure 5 for Figure 3 Schematic diagram of the structure at the CC section.

[0056] Figure 6 for Figure 5 Enlarged structural diagram at point D.

[0057] In the diagram: 1. Outer protective cover; 11. Notch; 2. Inner protective cover; 31. Support base; 32. Pressure bearing; 33. Rotary ring; 331. Notch groove; 332. Ring tooth; 341. Drive motor; 342. Gear; 35. Outer slewing bearing; 36. Inner slewing bearing; 41. Base; 411. Lower flap structure; 412. Pin; 413. Groove; 42. Inner pad; 51. Inner rod; 52. Outer rod; 53. Flexible baffle; 61. Water outlet pipe; 62. Main rotary joint; 63. Water distributor; 641. Water outlet pipe; 642. Secondary rotary joint; 643. Connecting pipe; 644. Water inlet control valve; 645. Pressure gauge; 646. Partition plate; 647. Branch pipe; 648. Drainage control valve; 649. Tightening protrusion; 7. Gas cylinder. Detailed Implementation

[0058] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0059] Example:

[0060] like Figures 1 to 6 As shown, a gas cylinder pressure resistance testing device includes:

[0061] Outer protective cover, ring structure;

[0062] The inner protective cover has a ring structure and is coaxially fitted inside the outer protective cover; an annular cavity is formed between the outer and inner protective covers.

[0063] A planar rotating component is set inside an annular cavity and rotates circumferentially around the axis of the inner protective cover.

[0064] Four accommodating seats are arranged in a uniform circular array on the upper surface of the planar rotating component to accommodate and limit the gas cylinder to be tested;

[0065] The same number of partitions as the accommodating seats are fixedly arranged in a uniform circumferential array within the annular cavity, alternating with the accommodating seats; the accommodating seats can freely pass through the partitions; the outer protective cover has a notch; the width of the notch does not exceed the interval between two adjacent partitions;

[0066] The pressurization assembly, located above the outer protective cover, can communicate with the upper end of the gas cylinder in each housing.

[0067] The detection line is set into a loop using a planar rotating assembly. This assembly drives the housing to move, causing the gas cylinders to be tested to sequentially undergo the processes of injection and pressurization, pressure stabilization, and pressure release. External protective covers, internal protective covers, and partitions separate the gas cylinders to be tested, preventing injury from fragments caused by cylinder rupture during the testing process.

[0068] In this embodiment, the planar rotation assembly includes:

[0069] The support base is ring-shaped and is set inside the annular cavity;

[0070] The pressure bearing is mounted on the upper surface of the support base, with the outer sleeve on the outside of the inner protective cover and the inner sleeve on the inside of the outer protective cover.

[0071] A rotating ring is disposed on the upper surface of the pressure bearing, with an outer sleeve on the outside of the inner protective cover and an inner sleeve on the inside of the outer protective cover; the receiving seat is disposed on the upper surface of the rotating ring;

[0072] The drive mechanism is connected to the rotating ring drive, which drives the rotating ring to rotate circumferentially around the axis of the inner protective cover.

[0073] The pressure bearing provides support for the smooth rotation of the swivel ring.

[0074] In this embodiment, the planar rotation assembly further includes:

[0075] The outer slewing bearing is sleeved on the outer cylindrical surface of the slewing ring, and the outer ring is tightly fitted to the inner side of the outer protective cover.

[0076] The inner slewing bearing is fitted inside the inner protective cover, and the outer ring is in close contact with the inner cylindrical surface of the slewing ring.

[0077] External and internal slewing bearings can limit the movement of the slewing ring while reducing its rotational resistance.

[0078] In this embodiment, the lower end of the inner cylindrical surface of the rotating ring is provided with an annular notch; the side of the notch is provided with annular teeth;

[0079] The drive mechanism includes;

[0080] The drive motor is positioned vertically upwards within the annular cavity;

[0081] The gear is coaxially connected to the drive motor and meshes with a ring gear.

[0082] In this embodiment, the accommodating seat includes a base and an inner padding layer; the upper end of the base is provided with a groove, and the inner surface of the groove is provided with an inner padding layer; the inner wall of the outer protective cover of the base is a downward flip-down plate structure; the downward flip-down plate structure is fixed to the rest of the base by a pin.

[0083] The inner liner is made of rubber to prevent scratching the outer surface of the gas cylinder; the flip-down structure allows the side of the groove to be opened, making it easy to remove the gas cylinder after depressurization and when water is injected into it, and also making it easy to insert an air cylinder.

[0084] In this embodiment, the pressurization component includes:

[0085] Booster pump;

[0086] The water outlet pipe is coaxially installed above the inner protective cover, and its upper end is connected to the water outlet of the booster pump.

[0087] The main rotary joint connects at its upper end to the lower end of the outlet pipe;

[0088] The water distribution head is connected to the lower end of the main rotary joint;

[0089] The same number of water control components as the number of housings are arranged radially in a uniform circumferential pattern around the axis of the inner protective cover, with the head end connected to the water distribution head and the tail end located directly above each housing.

[0090] The main rotary joint ensures that the water control component maintains a continuous injection of high-pressure water as the gas cylinder rotates.

[0091] In this embodiment, the water control component includes:

[0092] The outlet pipe is L-shaped, with its head connected to the water distribution head.

[0093] The secondary rotary joint is connected at the upper end to the tail end of the outlet pipe;

[0094] The connecting pipe has its upper end connected to the lower end of the secondary rotary joint, and its lower end is provided with an external thread for connecting to the gas cylinder; the outer surface of the connecting pipe is provided with a hexagonal prism-shaped protrusion.

[0095] The inlet control valve is installed on the connecting pipe;

[0096] The pressure gauge is installed on the connecting pipe.

[0097] The swivel joint allows the connecting pipe to be tightened normally when it is connected to the gas cylinder. At the same time, the water outlet pipe uses a variable high-pressure water pipe (such as the high-pressure water pipe of a washbasin in daily life), so that the connecting pipe can be moved up and down freely when connecting and disconnecting from the gas cylinder.

[0098] In this embodiment, a partition is provided in the lower part of the connecting pipe, dividing the lower part of the connecting pipe into separate entry spaces and exit spaces; the entry space is connected to the upper part of the connecting pipe.

[0099] The connecting pipe is equipped with a branch pipe that communicates with the external drainage space; the branch pipe is equipped with a drainage control valve.

[0100] The baffle allows gas to escape through the external exhaust space when water is injected into the connecting pipe, reducing the impact of compressible gas on the pressure resistance test.

[0101] In this embodiment, the dividing grid includes:

[0102] The inner rod is fixed at one end to the outer surface of the inner protective cover; the axis of the inner rod is perpendicular to the axis of the inner protective cover; the height of the inner rod is not lower than the upper end of the gas cylinder after the gas cylinder is placed in the accommodating seat.

[0103] The outer rod is fixed at one end to the inner surface of the outer protective cover; the axis of the outer rod is collinear with the axis of the inner rod; a gap is left between the end faces of the outer rod and the inner rod for the water pipe to pass through.

[0104] A flexible baffle, mounted on the inner and outer rods, completely separates the annular cavity; the lower end of the flexible baffle is lower than the upper end of the receiving seat.

[0105] The flexible baffle is made of plastic and can be made from the same magnetic transparent curtain material used in the entrances and exits of shopping malls. It can be fixed to the inner and outer rods with screws or other means. It has a certain thickness and is flexible enough to allow gas cylinders to pass through.

[0106] In this embodiment, the inlet control valve and the outlet control valve are electromagnetic control valves, and the pressure gauge is a pressure gauge with electrical signal transmission, i.e., an electronic pressure gauge.

[0107] In this embodiment, the gas cylinder pressure resistance testing device is used as follows: The lower flap structure on the receiving seat facing the notch is opened, exposing the groove. The gas cylinder to be tested is placed into the groove, and then the lower flap structure is locked with a pin, thus completing the gas cylinder placement. A wrench is used to align and tighten the protruding post (hexagonal prism) to connect the connecting pipe to the internal threaded hole of the gas cylinder. This completes the loading of the gas cylinder.

[0108] The drive motor rotates, causing the gas cylinder to move. After passing through a partition, the cylinder enters the pressurization zone. At this point, the pressurization pump is activated, and the inlet and outlet control valves are opened to inject water into the cylinder until no more air is expelled from the branch pipe. The outlet control valve is then closed, and the pressure gauge reading is recorded. Once the pressure gauge reading reaches the predetermined value, the inlet control valve is closed. Simultaneously, a new container arrives at the notch, and another gas cylinder to be tested is manually placed into the container.

[0109] Then, the drive motor is controlled to rotate again, causing the gas cylinder to move. After passing through a partition, the gas cylinder enters the detection area. At this time, the gas cylinder waits in the interval for a predetermined time, and the change in the pressure gauge value is observed to determine whether the gas cylinder is pressure resistant. If there is a rupture or crack, the pressure gauge value will decrease.

[0110] Once the cylinder's pressure resistance time is complete, the drive motor is turned again, causing the cylinder to move. After passing through a partition, the cylinder enters the depressurization area, where the drain control valve opens to release pressure. The drive motor is then turned again, causing the cylinder to move and pass through another partition before entering the loading / unloading area, specifically the area directly opposite the protective cover opening. At this point, the connecting pipe and cylinder are manually separated, the latch is opened, the lower flap structure is flipped down, and the cylinder is tilted outwards, pulling it out of the recess. The next process drains the cylinder while simultaneously drying its interior. A new cylinder to be tested can then be placed inside.

[0111] The above continuous operations can complete the continuous, assembly-line pressure testing of gas cylinders. It offers high testing efficiency and a high level of safety.

[0112] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of this technical solution, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A gas cylinder pressure resistance testing device, characterized in that, include: Outer protective cover, ring structure; The inner protective cover has a ring-shaped structure, with the inner sleeve coaxially fitted inside the outer protective cover. An annular cavity is formed between the outer protective cover and the inner protective cover; A planar rotating component is set inside an annular cavity and rotates circumferentially around the axis of the inner protective cover. At least four accommodating seats are arranged in a uniform circumferential array on the upper surface of the planar rotating component to accommodate and limit the gas cylinder to be tested; The same number of partitions as the accommodating seats are fixedly arranged in a uniform circumferential array within the annular cavity, alternating with the accommodating seats; the accommodating seats can freely pass through the partitions; the outer protective cover has a notch; the width of the notch does not exceed the interval between two adjacent partitions; The pressurization assembly, located above the outer protective cover, can communicate with the upper end of the gas cylinder in each housing.

2. The gas cylinder pressure resistance testing device according to claim 1, characterized in that, The planar rotation assembly includes: The support base is ring-shaped and is set inside the annular cavity; The pressure bearing is mounted on the upper surface of the support base, with the outer sleeve on the outside of the inner protective cover and the inner sleeve on the inside of the outer protective cover. A rotating ring is disposed on the upper surface of the pressure bearing, with an outer sleeve on the outside of the inner protective cover and an inner sleeve on the inside of the outer protective cover; the receiving seat is disposed on the upper surface of the rotating ring; The drive mechanism is connected to the rotating ring drive, which drives the rotating ring to rotate circumferentially around the axis of the inner protective cover.

3. The gas cylinder pressure resistance testing device according to claim 2, characterized in that, The planar rotation assembly also includes: The outer slewing bearing is sleeved on the outer cylindrical surface of the slewing ring, and the outer ring is tightly fitted to the inner side of the outer protective cover. The inner slewing bearing is fitted inside the inner protective cover, and the outer ring is in close contact with the inner cylindrical surface of the slewing ring.

4. The gas cylinder pressure resistance testing device according to claim 2, characterized in that, The lower end of the inner cylindrical surface of the rotating ring is provided with an annular notch; the side of the notch is provided with annular teeth. The drive mechanism includes; The drive motor is positioned vertically upwards within the annular cavity; The gear is coaxially connected to the drive motor and meshes with a ring gear.

5. The gas cylinder pressure resistance testing device according to claim 1, characterized in that, The accommodating seat includes a base and an inner padding layer; the upper end of the base is provided with a groove, and the inner surface of the groove is provided with an inner padding layer; the inner wall of the outer protective cover of the base is a downward flip-down plate structure; the downward flip-down plate structure is fixed to the rest of the base by a pin.

6. The gas cylinder pressure resistance testing device according to claim 1, characterized in that, The pressurization component includes: Booster pump; The water outlet pipe is coaxially installed above the inner protective cover, and its upper end is connected to the water outlet of the booster pump. The main rotary joint connects at its upper end to the lower end of the outlet pipe; The water distribution head is connected to the lower end of the main rotary joint; The same number of water control components as the number of housings are arranged radially in a uniform circumferential pattern around the axis of the inner protective cover, with the head end connected to the water distribution head and the tail end located directly above each housing.

7. The gas cylinder pressure resistance testing device according to claim 6, characterized in that, The water control component includes: The outlet pipe is L-shaped, with its head connected to the water distribution head. The secondary rotary joint is connected at the upper end to the tail end of the outlet pipe; The connecting pipe has its upper end connected to the lower end of the secondary rotary joint, and its lower end is provided with an external thread for connecting to the gas cylinder; the outer surface of the connecting pipe is provided with a hexagonal prism-shaped protrusion. The inlet control valve is installed on the connecting pipe; The pressure gauge is installed on the connecting pipe.

8. The gas cylinder pressure resistance testing device according to claim 7, characterized in that, The lower part of the connecting pipe is provided with a partition, which divides the lower part of the connecting pipe into separate entry space and exit space; the entry space is connected to the upper part of the connecting pipe. The connecting pipe is equipped with a branch pipe that communicates with the external drainage space; the branch pipe is equipped with a drainage control valve.

9. The gas cylinder pressure resistance testing device according to claim 7, characterized in that, The dividing grid includes: The inner rod is fixed at one end to the outer surface of the inner protective cover; the axis of the inner rod is perpendicular to the axis of the inner protective cover; the height of the inner rod is not lower than the upper end of the gas cylinder after the gas cylinder is placed in the accommodating seat. The outer rod is fixed at one end to the inner surface of the outer protective cover; the axis of the outer rod is collinear with the axis of the inner rod; a gap is left between the end faces of the outer rod and the inner rod for the water pipe to pass through. A flexible baffle, mounted on the inner and outer rods, completely separates the annular cavity; the lower end of the flexible baffle is lower than the upper end of the receiving seat.

10. The gas cylinder pressure resistance testing device according to claim 7, characterized in that, The inlet control valve and the outlet control valve are electromagnetic control valves, and the pressure gauge is a pressure gauge with electrical signal transmission.

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