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

Abstract

The invention 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 detachable 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 invention further discloses a heat treatment quenching system suitable for the two-end-closing 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. The gas cylinder inner container can be fixed and positioned, it is guaranteed that a product does not shake in the quenching process, meanwhile, continuous heat treatment production can be achieved, and the production efficiency and the production quality are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas cylinder production, and particularly to a heat treatment material frame and quenching system suitable for the inner liner of a gas cylinder with both ends closed Background Art

[0002] In today's industrial field, aluminum alloy has become one of the indispensable important materials in modern industry due to its many excellent properties such as light weight, high strength, and corrosion resistance. It is widely used in many key industries such as aerospace, automotive manufacturing, shipbuilding engineering, petrochemical industry, electronic and electrical, and machining. As an important member of many aluminum alloy products, aluminum alloy gas cylinders also play a crucial role in industrial production and daily life. For example, they are used to store and release fire extinguishing agents in the fire protection system, provide breathing gas for divers in the diving field, store and transport medical gases in the medical industry, and store and transport various gas chemicals in the chemical industry

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

[0004] Currently, in the heat treatment technology of aluminum alloy gas cylinders, the batch heat treatment method dominates. The main feature of this method is that by loading the aluminum alloy gas cylinder into a material frame and clamping it tightly in a vertical up-and-down manner as a whole, the gas cylinder is kept in a completely fixed state during the entire heat treatment process. This method can ensure to the greatest extent that the gas cylinder is evenly heated during heat treatment processes such as heating, heat preservation, and cooling, and avoid performance non-uniformity and internal tissue defects caused by problems such as local overheating or too fast cooling, thereby ensuring that the gas cylinder finally has excellent comprehensive performance, including high strength, high toughness, and good dimensional stability

[0005] However, this method also has a significant drawback, that is, the production efficiency is extremely low. Since the processing speed of the batch heat treatment furnace is strictly limited by factors such as loading, unloading, and temperature uniformity in the furnace, each production cycle takes a long time to complete, which obviously cannot meet the requirements of high-efficiency production in the case of large-scale industrial production

[0006] In order to solve this problem, the industry has begun to explore continuous heat treatment methods in recent years, aiming to significantly improve the production efficiency of heat treatment of aluminum alloy gas cylinders through continuous production processes. However, the charging method of most continuous heat treatment furnaces is not reasonable. In the quenching process, since the strength and hardness of aluminum alloy gas cylinders decrease at high temperatures, and the cooling stress distribution in the quenching medium is complex, unreasonable charging methods can easily cause deformation of gas cylinders, thereby affecting the sealing performance and overall quality of gas cylinders.

[0007] In the field of aluminum alloy gas cylinder manufacturing, the two-end closing type gas cylinder liner has gradually occupied an important position, and it has unique structural and performance advantages. Its two-end closing design makes the liner more compact and well-sealed when connected to external accessories, effectively preventing gas leakage. At the same time, when subjected to internal pressure, it can better disperse stress, enhance the overall pressure-bearing capacity of the gas cylinder, and meet the strict requirements of modern industry for the safety and reliability of gas cylinders. However, this special closing structure also brings certain challenges during the heat treatment process. On the one hand, in the traditional periodic heat treatment method, the two-end closing type gas cylinder liner can guarantee performance, but as mentioned above, the production efficiency is low and it is difficult to meet the needs of large-scale production. On the other hand, when the existing continuous heat treatment method is adopted, due to the structural characteristics of the liner itself, it is difficult to ensure that the loading method is stable during the heating and quenching process, and does not deform due to improper clamping, thereby affecting the product quality. Therefore, according to the characteristics of the two-end closing type gas cylinder liner, the development of a matching efficient and quality-guaranteed heat treatment material frame and quenching system has become a key issue to be solved in this field. Summary of the invention

[0008] In order to solve the above technical problems, the purpose of the present invention is to provide a heat treatment material frame and quenching system suitable for the inner liner of the gas cylinder with closed ends at both ends. The present invention can achieve safe and reliable fixation and positioning of the aluminum gas cylinder, ensure that the product does not shake during the quenching process, and at the same time can achieve a more convenient loading process, and can realize continuous heat treatment production, thereby improving production efficiency and production quality.

[0009] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0010] On the one hand, the present invention provides a heat treatment material frame suitable for a gas cylinder liner with closed ends, comprising a frame, a plurality of bottle mouth positioning rings arranged on the bottom of the frame, and a plurality of protective cages fixedly arranged on the upper part of the frame; the bottle mouth positioning rings correspond to the protective cages one by one; a detachable sheath is clamped in the protective cage, and the size of the sheath is adapted to the cylindrical size of the gas cylinder liner; the bottle mouth of the gas cylinder liner is adapted to the bottle mouth positioning ring; the bottle mouth positioning ring cooperates with the sheath to vertically position the gas cylinder liner.

[0011] Furthermore, the total height of the heat treatment frame is half of the total length of the gas cylinder inner liner, 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 in the loading process, thereby greatly improving the loading efficiency.

[0012] Furthermore, two of the protective cages are symmetrically arranged as a group through an intermediate connecting plate, and the intermediate connecting plate is fixed to the top of the frame body.

[0013] Furthermore, the cage wall of the protective cage is of a hollow structure, which enables cooling water to quickly enter the protective cage on the premise of ensuring strength, optimizing the heat transfer efficiency during the cooling process.

[0014] Furthermore, the sheath is clamped to the protective cage by at least three clamping claws.

[0015] On the other hand, the present invention provides a heat treatment quenching system applicable to the gas cylinder inner liner with closed ends at both ends, including the above-mentioned heat treatment frame;

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

[0017] The heat treatment frame is placed in the lifting basket, the lifting basket is slidably arranged in the quenching support in a vertically movable manner, the lifting drive device is installed on the quenching support, and the lifting drive device is connected to the lifting basket; the lifting drive device drives the lifting basket to descend, and places the heat treatment frame and the gas cylinder inner liner provided thereon in the cooling foundation pit for quenching heat treatment.

[0018] Furthermore, a transmission roller path is provided on the bottom of the lifting basket, and the transmission roller path is connected to the solid melting furnace to convey the heat treatment frame from the solid melting furnace to the lifting basket. Through the connection between the transmission roller path and the solid melting furnace, the heat treatment frame can be automatically and continuously conveyed from the solid melting furnace to the lifting basket, realizing a continuous production process, greatly reducing the traditional periodic heat treatment production time, and significantly improving the overall production efficiency of the 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 chain transmission mechanism, the sprocket chain transmission mechanism is connected to the lifting basket, and the hydraulic system drives the lifting basket to perform lifting movement through the sprocket chain transmission mechanism.

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

[0021] Furthermore, a nozzle guiding sleeve that cooperates with the nozzle at the upper end of the inner cylinder of the gas cylinder is provided on the lower side of the material pressing frame, which is used to cooperate with the nozzle positioning ring at the bottom of the heat treatment material frame to fix the inner cylinder of the gas cylinder up and down, avoiding the shaking and floating of the inner cylinder of the gas cylinder during the quenching process.

[0022] The technical effects of the present invention are as follows:

[0023] Through the cooperation of the nozzle positioning ring and the sheath in the protective cage, the present invention can accurately vertically position the inner cylinder of the gas cylinder. During the quenching process, this precise positioning method can effectively prevent the inner cylinder of the gas cylinder from shaking or tilting, and can also avoid the deformation problem of the inner cylinder of the gas cylinder caused by the existing fixing method, ensuring the stability of the inner cylinder of the gas cylinder during the cooling process, thereby avoiding quality problems such as uneven quenching and uneven stress distribution caused by position deviation, greatly improving the quality stability and consistency of the product, ensuring that the performance of the inner cylinder of the gas cylinder meets high-standard requirements, and also improving the clamping efficiency during the heat treatment process of the inner cylinder of the gas cylinder.

[0024] The sheath in the material frame of the present invention adopts a detachable design, and its size can be adaptively adjusted according to the cylinder body size of different inner cylinders of the gas cylinder. Thus, the material frame of the present invention can meet the heat treatment requirements of the inner cylinders of the gas cylinders with closed ends at both ends of various specifications, without the need to separately customize special material frames for each different size of the inner cylinder of the gas cylinder, improving the versatility and flexibility of the material frame.

[0025] The heat treatment quenching system of the present invention organically combines components such as the heat treatment material frame, the quenching support, the lifting basket, the lifting driving device, and the cooling foundation pit to form a complete continuous heat treatment system. After the solid solution treatment process, the heat treatment material frame can directly enter the lifting basket, and then the lifting driving device controls the lifting movement of the lifting basket to accurately place the material frame into the cooling foundation pit for quenching and then take it out. The heat treatment quenching system of the present invention can realize a continuous production process, greatly reducing the non-production time such as loading, unloading, and waiting, significantly improving the overall production efficiency of the heat treatment of the inner cylinder of the gas cylinder, and enabling it to better meet the needs of large-scale industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic structural diagram of the heat treatment material frame of the present invention.

[0027] Figure 2This is a schematic structural diagram of the heat treatment material frame cooperating with the inner liner of the gas cylinder according to the present invention.

[0028] Figure 3 This is a schematic structural diagram of the heat treatment quenching system according to the present invention.

[0029] In the figure, 10: heat treatment material frame, 101: frame body, 102: nozzle positioning ring, 103: protective cage, 104: sheath, 1041: claw, 105: intermediate connection plate; 20: quenching support; 30: lifting hanging basket, 301: transmission roller path, 302: roller; 40: hydraulic system; 50: sprocket chain drive mechanism; 60: pressing drive device; 70: pressing frame, 701: nozzle guide sleeve; 80: cooling foundation pit; 90: guide rail; 100: inner liner of the gas cylinder. Detailed implementation manners

[0030] The following elaborates on the preferred embodiments of the present invention in conjunction with 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 the protection scope of the present invention more clearly defined.

[0031] As Figure 1 and Figure 2 shown, a preferred embodiment of a heat treatment material frame 10 applicable to the inner liner of a gas cylinder with closed ends at both ends includes a frame body 101, a plurality of nozzle positioning rings 102 arranged at the bottom of the frame body 101, and a plurality of protective cages 103 fixedly arranged at the upper part of the frame body 101.

[0032] The material of the heat treatment material frame 10 is Q235 steel; the frame body 101 adopts an integrated welding design, which includes a bottom frame and longitudinal supports arranged on the bottom frame; the nozzle positioning rings 102 are arranged on the upper side of the bottom (bottom frame) of the frame body 101 by welding.

[0033] The nozzle positioning rings 102 correspond to the protective cages 103 one by one; the nozzles at the lower end of the inner liner 100 of the gas cylinder are adapted to the nozzle positioning rings 102; and the inner diameter of the nozzle positioning rings 102 is greater than the outer diameter of the nozzles at the lower end of the inner liner 100 of the gas cylinder, so that a proper gap is left between the nozzles and the nozzle positioning rings 102.

[0034] The protective cages 103 are symmetrically arranged in groups of two through an intermediate connection plate 105, and the intermediate connection plate 102 is fixed to the top (top of the longitudinal supports) of the frame body 101 by at least three bolts. In this preferred embodiment, a total of three groups of protective cages 103 are fixed to the top of the frame body 101, and the nozzle positioning rings 102 are provided in the same number as the protective cages 103. This symmetric and stable structural design of the protective cages 103 on the frame body 101 significantly enhances the overall stability of the heat treatment material frame.

[0035] A detachable and installable sheath 104 is snap-fitted in the protective cage 103. Specifically, the sheath 104 is snap-fitted on the protective cage 103 through at least three clamping claws 1041. The size of the sheath 104 is adapted to the cylindrical size of the gas cylinder inner liner 100. Specifically, the inner diameter of the sheath 104 is slightly larger than the outer diameter of the cylinder of the gas cylinder inner liner 100, which can not only reserve enough expansion space for the gas cylinder inner liner, but also ensure that the gas cylinder inner liner does not shake too much during the movement of the heat treatment material frame. The inner diameter of the protective cage 103 can be designed according to the maximum outer diameter of the product of the gas cylinder inner liner corresponding to the material frame. For gas cylinder inner liner products larger than the inner diameter of the sheath, the sheath 104 can be removed so that the gas cylinder inner liner 100 is directly matched with the protective cage 103.

[0036] In addition, the cage wall of the protective cage 103 is a hollow structure, which enables the cooling water to quickly enter the protective cage 103 on the premise of ensuring the strength, and optimizes the heat transfer efficiency during the cooling process. The upper and lower edges of the sheath 104 and the protective cage 103 are both subjected to smooth chamfering treatment to avoid scratching the gas cylinder inner liner.

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

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

[0039] As Figure 3 shown, the present invention also provides a preferred embodiment of a heat treatment quenching system suitable for the gas cylinder inner liner with closed ends at both ends, including the above-mentioned heat treatment material frame 10, quenching support 20, lifting basket 30, lifting drive device and a cooling foundation pit 80 located below the quenching support; the cooling foundation pit 80 is connected to an external cooling water system.

[0040] The quenching support 20 is welded by profiled steel and steel plates. The lifting basket 30 is welded and made of stainless steel channel steel. A driving roller path 301 is provided at the bottom of the lifting basket 30, and the driving roller path 301 is connected to the solid melting furnace to convey the heat treatment material frame 10 from the solid melting furnace to the lifting basket 30. A guiding ring and a photoelectric induction position switch are provided on the driving roller path 301, which can ensure that the heat treatment material frame 10 stays at the correct position on the driving roller path 301 after coming out of the solid melting furnace. Through the connection between the driving roller path 301 and the solid melting furnace, the heat treatment material frame 10 can be automatically and continuously conveyed from the solid melting furnace to the lifting basket 30, realizing a continuous production process, greatly reducing the traditional periodic heat treatment production time, and significantly improving the overall production efficiency of the gas cylinder heat treatment, so that it can better meet the needs of large-scale industrial production.

[0041] The lifting hanging basket 30 is slidably arranged in the quenching bracket 20 in a vertically movable manner through rollers 302. Among them, the rollers 302 cooperate with the guide rails 90 arranged on the quenching bracket 20, and guide rails for cooperating with the rollers are also provided in the cooling foundation pit 80. The lifting drive device is installed on the quenching bracket 20 and is connected to the lifting hanging basket 30; the lifting drive device drives the lifting hanging basket 30 to descend, and places the heat treatment material frame 10 and the gas cylinder liner 100 arranged thereon into the cooling foundation 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 drive mechanism 50. The sprocket and chain drive mechanism 50 is connected to the lifting hanging basket 30, and the sprockets in the sprocket and chain drive mechanism 50 include a moving sprocket and a fixed sprocket. The hydraulic system 40 drives the lifting hanging basket 30 to perform lifting movement through the sprocket and chain drive mechanism 50.

[0043] Since the gas cylinder liner 100 has a hollow structure, when the heat treatment material frame 10 quickly descends for quenching, the buoyancy of the quenching liquid will cause the gas cylinder liner to float and separate from the heat treatment material frame. Therefore, a material pressing device is also provided above the heat treatment material frame 10 in this heat treatment quenching system. The material pressing device includes a material pressing frame 70 and a material pressing drive device 60; the material pressing drive device 60 is installed on the upper part of the lifting hanging basket 30 and is connected to the material pressing frame 70; in this preferred embodiment, the material pressing drive device 60 is an oil cylinder; the material pressing drive device 60 drives the material pressing frame 70 to descend to press on the upper end of the gas cylinder liner 100. A nozzle guide sleeve 701 for cooperating with the upper end nozzle of the gas cylinder liner 100 is provided on the lower side of the material pressing frame 70, and it cooperates with the nozzle positioning ring 102 at the bottom of the heat treatment material frame to fix the gas cylinder liner 100 up and down, avoiding the gas cylinder liner from shaking and floating during the quenching process.

[0044] During operation, the gas cylinder liners 100 are respectively positioned at each positioning point of the heat treatment material frame 10, and the gas cylinder liners 100 are safely and reliably loaded and positioned by the up and down cooperation of the sheaths 104 or cages 103 in the heat treatment material frame 10 and the nozzle positioning ring 102. After being treated in the previous solid melting furnace, the heat treatment material frame 10 is conveyed to the lifting hanging basket 20 in the quenching system through the transmission roller path 301. After the heat treatment material frame 10 arrives, the material pressing drive device 60 drives the material pressing frame 70 to press down. The nozzle guide sleeve 701 on the lower side of the material pressing frame 70 is sleeved on the nozzle at the upper end of the gas cylinder liner 100 and cooperates with the nozzle positioning ring 102 at the bottom of the heat treatment material frame 10 to fix the gas cylinder liner 100 up and down, avoiding the gas cylinder liner from shaking and floating during the quenching process. The lifting drive device drives the lifting hanging basket 20 to descend, and places the heat treatment material frame 10 and the gas cylinder liner 100 arranged thereon into the cooling foundation pit 80 for quenching heat treatment.

[0045] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-described exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, in any regard, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be embraced within the present invention.

[0046] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard 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 basket applicable to the inner liner of a gas cylinder with closed ends at both sides, characterized in that It includes a frame body, a plurality of nozzle positioning rings arranged at the bottom of the frame body, and a plurality of protective cages fixedly arranged at the upper part of the frame body; the nozzle positioning rings correspond to the protective cages one by one; a detachable and installable sheath is clamped in the protective cage, and the size of the sheath is adapted to the cylinder 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 ring and the sheath cooperate to vertically position the gas cylinder inner liner.

2. The heat treatment material frame for the inner liner of a gas cylinder with closed ends at both ends according to claim 1, characterized in that, The total height of the heat treatment material frame is half of the total length of the gas cylinder inner liner.

3. A heat treatment material frame applicable to the inner liner of a gas cylinder with both ends closed as described in claim 1, characterized in that, Two of the protective cages are symmetrically arranged as a group through an intermediate connecting plate, and the intermediate connecting plate is fixed on the top of the frame body.

4. The heat treatment material frame applicable to the inner liner of a gas cylinder with closed ends at both ends according to claim 1, characterized in that, The cage wall of the protective cage is of a hollow structure.

5. The heat treatment material frame applicable to the inner liner of a gas cylinder with closed ends at both ends according to claim 1, characterized in that The sheath is clamped on the protective cage through at least three clamping claws.

6. A heat treatment quenching system applicable to the inner liner of a gas cylinder with both ends closed, characterized in that, It includes the heat treatment material frame according to any one of claims 1-5; This heat treatment quenching system further includes: a quenching support, a lifting hanging basket, a lifting driving device, and a cooling foundation pit located below the quenching support; The heat treatment material frame is placed in the lifting hanging basket, the lifting hanging basket is slidably arranged in the quenching support in a vertically liftable manner, the lifting driving device is installed on the quenching support, and the lifting driving device is connected to the lifting hanging basket; the lifting driving device drives the lifting hanging basket to descend, and places the heat treatment material frame and the gas cylinder inner liner arranged thereon in the cooling foundation pit for quenching heat treatment.

7. A heat treatment quenching system for the inner liner of a gas cylinder with both ends closed as claimed in claim 6, characterized in that A transmission roller path is arranged at the bottom of the lifting hanging basket, and the transmission roller path is connected to the solid melting furnace to convey the heat treatment material frame from the solid melting furnace into the lifting hanging basket.

8. A heat treatment quenching system for the inner liner of a gas cylinder with closed ends at both ends according to claim 6, characterized in that The lifting driving device includes a hydraulic system and a sprocket chain transmission mechanism, the sprocket chain transmission mechanism is connected to the lifting hanging basket, and the hydraulic system drives the lifting hanging basket to perform lifting motion through the sprocket chain transmission mechanism.

9. A heat treatment quenching system for the inner liner of a gas cylinder with closed ends at both ends according to claim 6, characterized in that, It further includes a material pressing device located above the heat treatment material frame, and the material pressing device includes a material pressing frame and a material pressing driving device; the material pressing driving device is installed on the upper part of the lifting hanging basket and is connected to the material pressing frame; the material pressing driving device drives the material pressing frame to descend to press on the upper end of the gas cylinder inner liner.

10. A heat treatment quenching system for the inner liner of a two-end closed gas cylinder according to claim 9, characterized in that, A nozzle guide sleeve adapted to the upper end nozzle of the gas cylinder inner liner is arranged on the lower side of the material pressing frame.

Images