Heat treatment material frame and quenching system suitable for two-end closing-in type gas cylinder inner container

Abstract

The utility model discloses a heat treatment material frame suitable for a gas cylinder liner with two closed ends. The heat treatment material frame comprises a frame body, a cylinder neck positioning ring and a protective cage, a protective sleeve is clamped in the protective cage; a bottle neck of the gas cylinder liner is matched with the bottle neck positioning ring; and the bottle neck positioning ring is matched with the sheath to vertically position the gas cylinder liner. The utility model further discloses a heat treatment quenching system suitable for the two-end closing-in type gas cylinder inner container. The heat treatment quenching system comprises a heat treatment material frame, a quenching support, a lifting hanging rail, a lifting driving device and a cooling foundation pit. The heat treatment material frame is arranged in the lifting hanging rail, the lifting hanging rail is arranged in the quenching support in a vertically lifting and sliding mode, the lifting driving device drives the lifting hanging rail to descend, and the heat treatment material frame and the gas cylinder inner container arranged on the heat treatment material frame are arranged in the cooling foundation pit so that quenching heat treatment can be conducted. According to the utility model, the gas cylinder liner can be fixed and positioned, a product does not shake in the quenching process, meanwhile, continuous heat treatment production can be realized, and the production efficiency and the production quality are improved.

Description

Technical Field

[0001] This utility model relates to the field of gas cylinder production technology, and in particular to a heat treatment material frame and quenching system suitable for the inner liner of a gas cylinder with constricted ends. Background Technology

[0002] In today's industrial sector, aluminum alloys, with their superior properties such as light weight, high strength, and corrosion resistance, have become an indispensable material in modern industry, widely used in many key sectors including aerospace, automotive manufacturing, shipbuilding, petrochemicals, electronics, and machining. Aluminum alloy gas cylinders, as an important component of many aluminum alloy products, also play a vital role in industrial production and daily life. For example, they are used in fire-fighting systems to store and release extinguishing agents, in diving to provide breathing gases for divers, in the medical industry to store and transport medical gases, and in the chemical industry to store and transport various gaseous chemicals.

[0003] However, the performance of aluminum alloy gas cylinders largely depends on the heat treatment process during manufacturing. Heat treatment technology can not only significantly improve key performance indicators such as strength, toughness, and corrosion resistance of aluminum alloy gas cylinders, but also optimize their microstructure, thereby ensuring good reliability and safety in actual use.

[0004] Currently, the cyclic heat treatment method dominates the heat treatment technology for aluminum alloy gas cylinders. The main characteristic of this method is that the aluminum alloy gas cylinder is placed in a frame and clamped vertically throughout the entire heat treatment process, keeping the cylinder completely fixed. This method ensures that the cylinder is heated evenly during the heating, holding, and cooling stages, avoiding uneven performance and internal structural defects caused by localized overheating or excessively rapid cooling. This ultimately ensures that the cylinder possesses excellent overall performance, including high strength, high toughness, and good dimensional stability.

[0005] However, this method also has a significant drawback: extremely low production efficiency. Because the processing speed of a cyclic heat treatment furnace is strictly limited by factors such as loading, unloading, and temperature uniformity within the furnace, each production cycle takes a considerable amount of time to complete. This clearly cannot meet the demands of high-efficiency production in large-scale industrial settings.

[0006] To address this issue, the industry has begun exploring continuous heat treatment methods in recent years, aiming to significantly improve the production efficiency of aluminum alloy gas cylinder heat treatment through a continuous production process. However, the charging methods of most current continuous heat treatment furnaces are not ideal. During the quenching stage, because the strength and hardness of aluminum alloy gas cylinders decrease at high temperatures, and the cooling stress distribution in the quenching medium is complex, improper charging methods can easily lead to cylinder deformation, thereby affecting the sealing performance and overall quality of the gas cylinders.

[0007] In the field of aluminum alloy gas cylinder manufacturing, the two-end tapered cylinder liner is gradually gaining importance due to its unique structural and performance advantages. Its two-end tapered design allows for a tighter and more airtight connection with external components, effectively preventing gas leakage. Simultaneously, it better disperses stress when subjected to internal pressure, enhancing the overall pressure-bearing capacity of the cylinder and meeting the stringent safety and reliability requirements of modern industry. However, this special tapered structure also presents certain challenges in the heat treatment process. On the one hand, while the two-end tapered cylinder liner can guarantee performance in traditional cyclic heat treatment methods, as mentioned earlier, its low production efficiency makes it difficult to meet the needs of large-scale production. On the other hand, when using existing continuous heat treatment methods, due to the inherent structural characteristics of the liner, it is difficult to ensure stability during heating and quenching while preventing deformation due to improper clamping, thus affecting product quality. Therefore, developing a matching, efficient, and quality-assured heat treatment material frame and quenching system for the two-end tapered cylinder liner has become a critical issue that urgently needs to be addressed in this field. Utility Model Content

[0008] To address the aforementioned technical problems, the purpose of this invention is to provide a heat treatment material frame and quenching system suitable for the inner liner of a gas cylinder with tapered ends. This invention enables safe and reliable fixing and positioning of the aluminum gas cylinder, ensuring that the product does not shake during quenching. It also facilitates a convenient loading process and allows for continuous heat treatment production, improving production efficiency and quality.

[0009] To achieve the above-mentioned technical objectives and effects, this utility model is implemented through the following technical solution:

[0010] This utility model provides a heat treatment material frame suitable for the inner liner of a gas cylinder with tapered ends, including a frame, multiple nozzle positioning rings disposed at the bottom of the frame, and multiple protective cages fixedly disposed at the top of the frame; the nozzle positioning rings correspond one-to-one with the protective cages; a detachable protective sleeve is snapped into the protective cage, the size of the protective sleeve being adapted to the cylindrical size of the gas cylinder inner liner; the nozzle of the gas cylinder inner liner is adapted to the nozzle positioning ring; the nozzle positioning rings and the protective sleeves cooperate to vertically position the gas cylinder inner liner.

[0011] Furthermore, the total height of the heat treatment material frame is half the total length of the gas cylinder liner, which facilitates the automated loading and unloading robot to grasp and hold the upper end of the gas cylinder liner, significantly reducing the time and manual intervention required for the loading process, thereby greatly improving the loading efficiency.

[0012] Furthermore, the protective cages are arranged symmetrically in pairs via an intermediate connecting plate, which is fixed to the top of the frame.

[0013] Furthermore, the cage wall of the protective cage has a hollow structure, which allows cooling water to quickly enter the protective cage while ensuring strength, thereby optimizing the heat transfer efficiency during the cooling process.

[0014] Furthermore, the sheath is engaged with the cage by at least three latches.

[0015] Another aspect of this utility model provides a heat treatment quenching system suitable for the inner liner of a gas cylinder with narrow ends, including the heat treatment material frame described above.

[0016] The heat treatment quenching system also includes: a quenching support, a lifting platform, a lifting drive device, and a cooling pit located below the quenching support; the cooling pit is connected to an external cooling water system.

[0017] The heat treatment material frame is placed in the lifting railing, which is slidably mounted in the quenching support. The lifting drive device is installed on the quenching support and connected to the lifting railing. The lifting drive device drives the lifting railing to descend, placing the heat treatment material frame and the gas cylinder liner mounted on it into the cooling pit for quenching heat treatment.

[0018] Furthermore, a drive roller conveyor is provided at the bottom of the lifting platform, which connects to the solid solution furnace to transport the heat treatment material frame from the furnace to the lifting platform. Through the connection between the drive roller conveyor and the furnace, the heat treatment material frame can be automatically and continuously transported from the furnace to the lifting platform, achieving a continuous production process. This significantly reduces the traditional cyclical heat treatment production time and substantially improves the overall production efficiency of gas cylinder heat treatment, enabling it to better meet the needs of large-scale industrial production.

[0019] Furthermore, the lifting drive device includes a hydraulic system and a sprocket and chain transmission mechanism. The sprocket and chain transmission mechanism is connected to the lifting platform, and the hydraulic system drives the lifting platform to move up and down through the sprocket and chain transmission mechanism.

[0020] Furthermore, the heat treatment quenching system also includes a pressing device located above the heat treatment material frame. The pressing device includes a pressing frame and a pressing drive device. The pressing drive device is installed on the upper part of the lifting platform and connected to the pressing frame. The pressing drive device drives the pressing frame to descend so as to press against the upper end of the gas cylinder liner.

[0021] Furthermore, the lower side of the pressing frame is provided with a nozzle guide sleeve that cooperates with the upper nozzle of the gas cylinder liner. This sleeve is used to cooperate with the nozzle positioning ring at the bottom of the heat treatment material frame to fix the gas cylinder liner vertically and vertically, preventing the gas cylinder liner from shaking or floating during the quenching process.

[0022] The technical effects of this utility model are as follows:

[0023] This invention achieves precise vertical positioning of the gas cylinder liner through the cooperation of the nozzle positioning ring and the protective sleeve in the cage. During the quenching process, this precise positioning method effectively prevents the gas cylinder liner from shaking or tilting, and also avoids the deformation problems caused by existing fixing methods. It ensures the stability of the gas cylinder liner during cooling, thereby avoiding quality problems such as uneven quenching and uneven stress distribution caused by positional deviations. This greatly improves the quality stability and consistency of the product, ensures that the performance of the gas cylinder liner meets high standards, and also improves the clamping efficiency during the heat treatment process.

[0024] The sheath in the material frame of this invention features a detachable design, and its size can be adapted and adjusted according to the cylinder dimensions of different gas cylinder liners. Therefore, the material frame of this invention can meet the heat treatment requirements of various specifications of gas cylinder liners with tapered ends, eliminating the need to customize a dedicated material frame for each different size of gas cylinder liner, thus improving the versatility and flexibility of the material frame.

[0025] This utility model's heat treatment quenching system organically combines a heat treatment material frame with a quenching support, a lifting rack, a lifting drive device, and a cooling pit, forming a complete continuous heat treatment system. The heat treatment material frame, after the solution treatment process, can directly enter the lifting rack. The lifting drive device then controls the lifting movement of the rack, accurately placing the material frame into the cooling pit for quenching before removal. This heat treatment quenching system enables a continuous production process, significantly reducing non-production time such as loading, unloading, and waiting, and substantially improving the overall production efficiency of gas cylinder liner heat treatment, thus better meeting the needs of large-scale industrial production. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the heat treatment material frame of this utility model.

[0027] Figure 2This is a schematic diagram of the structure of the heat treatment material frame and the inner liner of the gas cylinder according to this utility model.

[0028] Figure 3 This is a schematic diagram of the heat treatment quenching system of this utility model.

[0029] In the diagram, 10: heat treatment material frame, 101: frame, 102: bottle nozzle positioning ring, 103: protective cage, 104: protective sleeve, 1041: claw, 105: intermediate connecting plate; 20: quenching bracket; 30: lifting rail, 301: transmission roller, 302: roller; 40: hydraulic system; 50: sprocket and chain transmission mechanism; 60: pressing drive device; 70: pressing frame, 701: bottle nozzle guide sleeve; 80: cooling pit; 90: guide rail; 100: gas cylinder inner liner. Detailed Implementation

[0030] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0031] like Figure 1 and Figure 2 The preferred embodiment shown is a heat treatment material frame 10 suitable for the inner liner of a gas cylinder with closed ends, which includes a frame 101, a plurality of bottle nozzle positioning rings 102 disposed on the bottom of the frame 101, and a plurality of protective cages 103 fixedly disposed on the upper part of the frame 101.

[0032] The heat treatment material frame 10 is made of Q235 steel; the frame 101 adopts an integrated welding design, which includes a bottom frame and a longitudinal support set on the bottom frame; the bottle mouth positioning ring 102 is set on the bottom (bottom frame) of the frame 101 by welding.

[0033] The nozzle positioning ring 102 corresponds one-to-one with the protective cage 103; the nozzle at the lower end of the gas cylinder inner liner 100 is adapted to the nozzle positioning ring 102; and the inner diameter of the nozzle positioning ring 102 is larger than the outer diameter of the nozzle at the lower end of the gas cylinder inner liner 100, so that there is a suitable gap between the nozzle and the nozzle positioning ring 102.

[0034] The protective cages 103 are arranged symmetrically in pairs via intermediate connecting plates 105. The intermediate connecting plates 105 are fixed to the top of the frame 101 (top of the longitudinal support) by at least three bolts. In this preferred embodiment, three sets of protective cages 103 are fixed to the top of the frame 101, and the number of bottle mouth positioning rings 102 is equal to the number of protective cages 103. This symmetrical and stable structural design of the protective cages 103 on the frame 101 significantly enhances the overall stability of the heat treatment material frame.

[0035] A detachable sheath 104 is snapped into the cage 103. Specifically, the sheath 104 is snapped onto the cage 103 by at least three claws 1041. The size of the sheath 104 is adapted to the cylindrical size of the gas cylinder liner 100. Specifically, the inner diameter of the sheath 104 is slightly larger than the outer diameter of the gas cylinder liner 100, which allows sufficient expansion space for the gas cylinder liner while ensuring that the gas cylinder liner does not shake too much during the movement of the heat treatment material frame. The inner diameter of the cage 103 can be designed according to the maximum outer diameter of the gas cylinder liner corresponding to the material frame. For gas cylinder liner products with an inner diameter larger than that of the sheath, the sheath 104 can be removed, allowing the gas cylinder liner 100 to directly fit into the cage 103.

[0036] In addition, the cage wall of the protective cage 103 has a hollow structure, which allows cooling water to quickly enter the protective cage 103 while ensuring strength, thus optimizing the heat transfer efficiency during the cooling process. The upper and lower edges of the protective sleeve 104 and the protective cage 103 are all smoothly chamfered to avoid damaging the inner liner of the gas cylinder.

[0037] In the heat treatment material frame 10, the bottle nozzle positioning ring 102 and the protective sleeve 104 cooperate to vertically position the gas cylinder inner liner 100.

[0038] In addition, the total height of the heat treatment material frame 10 is half the total length of the gas cylinder inner liner 100, which facilitates the automated loading and unloading robot to grasp and hold the upper end of the gas cylinder inner liner, significantly reducing the time and manual intervention required for the loading process, thereby greatly improving the loading efficiency.

[0039] like Figure 3 As shown, this utility model also provides a preferred embodiment of a heat treatment quenching system suitable for the inner liner of a gas cylinder with narrow ends, including the heat treatment material frame 10, quenching support 20, lifting railing 30, lifting drive device, and cooling pit 80 located below the quenching support; the cooling pit 80 is connected to an external cooling water system.

[0040] The quenching support 20 is welded from structural steel and steel plates. The lifting platform 30 is made of welded stainless steel channel steel. A drive roller conveyor 301 is installed at the bottom of the lifting platform 30, which connects to the solidification furnace to transport the heat-treated material frame 10 from the furnace to the lifting platform 30. The drive roller conveyor 301 is equipped with guide rings and photoelectric position switches to ensure that the heat-treated material frame 10 remains in the correct position on the drive roller conveyor 301 after exiting the solidification furnace. Through the connection between the drive roller conveyor 301 and the solidification furnace, the heat-treated material frame 10 can be automatically and continuously transported from the furnace to the lifting platform 30, realizing a continuous production process. This significantly reduces the traditional cyclical heat treatment production time and substantially improves the overall production efficiency of gas cylinder heat treatment, enabling it to better meet the needs of large-scale industrial production.

[0041] The lifting platform 30 is slidably mounted in the quenching support 20 via rollers 302. The rollers 302 cooperate with guide rails 90 on the quenching support 20, and guide rails cooperating with the rollers are also provided in the cooling pit 80. A lifting drive device is installed on the quenching support 20 and connected to the lifting platform 30. The lifting drive device drives the lifting platform 30 to descend, placing the heat treatment material frame 10 and the gas cylinder liner 100 mounted on it into the cooling pit 80 for quenching heat treatment.

[0042] In this preferred embodiment, the lifting drive device includes a hydraulic system 40 and a sprocket and chain transmission mechanism 50. The sprocket and chain transmission mechanism 50 is connected to the lifting platform 30, and the sprocket in the sprocket and chain transmission mechanism 50 includes a moving sprocket and a fixed sprocket. The hydraulic system 40 drives the lifting platform 30 to perform lifting and lowering movements through the sprocket and chain transmission mechanism 50.

[0043] Since the cylinder liner 100 is a hollow structure, the buoyancy of the quenching fluid can cause the cylinder liner to float and detach from the heat treatment material frame 10 during rapid quenching. Therefore, the heat treatment quenching system also includes a pressing device located above the heat treatment material frame 10. This pressing device includes a pressing frame 70 and a pressing drive device 60. The pressing drive device 60 is installed on the upper part of the lifting platform 30 and connected to the pressing frame 70. In this preferred embodiment, the pressing drive device 60 is a hydraulic cylinder. The pressing drive device 60 drives the pressing frame 70 to descend and press against the upper end of the cylinder liner 100. The lower side of the pressing frame 70 is provided with a nozzle guide sleeve 701 that cooperates with the upper nozzle of the cylinder liner 100. It cooperates with the nozzle positioning ring 102 at the bottom of the heat treatment material frame to fix the cylinder liner 100 vertically and prevent it from shaking and floating during the quenching process.

[0044] During operation, the inner liner 100 of the gas cylinder is positioned at various locations on the heat treatment material frame 10. The inner liner 100 is securely and reliably loaded and positioned using the upper and lower cooperation of the sleeve 104 or cage 103 within the heat treatment material frame 10 and the nozzle positioning ring 102. After treatment in the solidification furnace, the heat treatment material frame 10 is conveyed to the lifting platform 20 in the quenching system via the transmission roller conveyor 301. Once the heat treatment material frame 10 is in place, the pressing drive device 60 drives the pressing frame 70 to press down. The nozzle guide sleeve 701 on the lower side of the pressing frame 70 is fitted onto the upper nozzle of the inner liner 100, cooperating with the nozzle positioning ring 102 at the bottom of the heat treatment material frame 10 to fix the inner liner 100 vertically, preventing it from shaking or floating during the quenching process. The lifting drive device drives the lifting platform 20 to descend, placing the heat treatment material frame 10 and the gas cylinder liner 100 mounted on it into the cooling pit 80 for quenching heat treatment.

[0045] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention.

[0046] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A heat treatment material frame suitable for the inner liner of a gas cylinder with tapered ends, characterized in that, The device includes a frame, multiple nozzle positioning rings disposed at the bottom of the frame, and multiple protective cages fixedly disposed at the top of the frame; each nozzle positioning ring corresponds to one of the protective cages; each protective cage has a detachable sleeve snapped into it, the size of which is adapted to the cylindrical size of the gas cylinder liner; the nozzle of the gas cylinder liner is adapted to the nozzle positioning ring; the nozzle positioning ring and the protective sleeve cooperate to vertically position the gas cylinder liner.

2. The heat treatment material frame suitable for the inner liner of a gas cylinder with tapered ends as described in claim 1, characterized in that, The total height of the heat treatment material frame is half the total length of the gas cylinder liner.

3. A heat treatment material frame suitable for the inner liner of a gas cylinder with tapered ends, as described in claim 1, is characterized in that... The protective cages are arranged symmetrically in pairs via an intermediate connecting plate, which is fixed to the top of the frame.

4. A heat treatment material frame suitable for the inner liner of a gas cylinder with tapered ends, as described in claim 1, is characterized in that... The cage wall of the protective cage has a hollow structure.

5. A heat treatment material frame suitable for the inner liner of a gas cylinder with tapered ends, as described in claim 1, is characterized in that... The sheath is secured to the cage by at least three claws.

6. A heat treatment quenching system suitable for the inner liner of a gas cylinder with tapered ends, characterized in that, Includes the heat treatment material frame as described in any one of claims 1-5; The heat treatment quenching system also includes: a quenching support, a lifting platform, a lifting drive device, and a cooling pit located below the quenching support; The heat treatment material frame is placed in the lifting railing, which is slidably mounted in the quenching support. The lifting drive device is installed on the quenching support and connected to the lifting railing. The lifting drive device drives the lifting railing to descend, placing the heat treatment material frame and the gas cylinder liner mounted on it into the cooling pit for quenching heat treatment.

7. A heat treatment quenching system for a gas cylinder liner with tapered ends, as described in claim 6, is characterized in that... The bottom of the lifting platform is equipped with a transmission roller conveyor, which is connected to the solidification furnace to transport the heat treatment material frame from the solidification furnace to the lifting platform.

8. A heat treatment quenching system for the inner liner of a gas cylinder with tapered ends, as described in claim 6, is characterized in that... The lifting drive device includes a hydraulic system and a sprocket and chain transmission mechanism. The sprocket and chain transmission mechanism is connected to the lifting platform, and the hydraulic system drives the lifting platform to move up and down through the sprocket and chain transmission mechanism.

9. A heat treatment quenching system for a gas cylinder liner with tapered ends, as described in claim 6, is characterized in that... It also includes a pressing device located above the heat treatment material frame, the pressing device including a pressing frame and a pressing drive device; the pressing drive device is installed on the upper part of the lifting frame and connected to the pressing frame; the pressing drive device drives the pressing frame to descend so as to press against the upper end of the gas cylinder liner.

10. A heat treatment quenching system for a gas cylinder liner with tapered ends, as described in claim 9, is characterized in that... The lower side of the pressing frame is provided with a nozzle guide sleeve that mates with the upper nozzle of the gas cylinder liner.

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