A mechanism for real-time inflation and pressure maintenance of type IV bottles in a curing oven

Abstract

The present invention relates to the technical field of hydrogen cylinder manufacturing, and mainly discloses a mechanism for real-time inflation and pressure maintenance of a Type IV cylinder in a curing furnace, comprising a core shaft, a ventilation component and a rotary component, wherein the front end of the core shaft is sealedly connected to the ventilation component, and the rear end of the core shaft is sealed and rotatably connected to the rotary joint; the rotary component is provided with a rotatable shaft sleeve, the middle end of the core shaft is slidably and rotatably connected to the inner hollow space of the shaft sleeve, one end of the liner of the Type IV cylinder is sealed, and the other end of the liner is provided with a ventilation handle connected to the inner liner of the Type IV cylinder, a notch is provided on the side wall of the front end of the shaft sleeve for the ventilation handle to be clamped from the side wall, and the front end outer portion of the ventilation handle is clamped with the hollow inner portion of the front end of the shaft sleeve, so that the internal pressure of the liner of the Type IV cylinder can be inflated and pressure maintained in real time during the rotation and curing of the cylinder in the curing furnace, so as to solve the problems of liner damage or separation of the plastic liner and the carbon fiber reinforcement layer caused by changes in the liner air pressure, as well as the layered curing of the cylinder liner and the outer fiber resin.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen cylinder manufacturing, in particular to a mechanism for real-time inflation and pressure maintenance of a IV-type cylinder in a curing furnace. Background Art

[0002] Wrapped gas cylinders are made of a composite material structure, made by wrapping high-strength fibers around a metal or non-metallic liner. These cylinders boast advantages such as light weight, high strength, and excellent safety, and are widely used in industries such as industry, healthcare, firefighting, and transportation. The manufacturing process for wrapped gas cylinders primarily involves liner preparation, fiber winding, and curing.

[0003] Curing is a crucial step in the manufacturing process of wrapped gas cylinders. Its purpose is to induce a chemical reaction between the fibers and the resin, forming a uniform, dense, and high-strength composite material layer. The quality of the curing process directly impacts the performance and lifespan of wrapped gas cylinders. Curing is typically performed in a curing oven, where parameters such as temperature, pressure, and time are controlled to fully cure the resin.

[0004] The existing curing method for Type IV gas cylinders follows the same molding method used for Type III hydrogen storage cylinders. The stability of subsequent carbon fiber winding is guaranteed solely by the rigidity of the inner liner, and curing is completed in a single winding process. The single winding curing method involves pressurizing the plastic liner to a pre-charge pressure and sealing it to obtain a pressurized plastic liner; then winding the pressurized plastic liner with fibers according to a layup plan to obtain a wound plastic liner; and finally curing the wound plastic liner in a curing oven to obtain a plastic-lined composite high-pressure hydrogen storage cylinder.

[0005] The problem with the above method is that during the curing process, the curing furnace will be used to perform heating and cooling operations on the hydrogen storage cylinder at various stages. At this time, the hydrogen storage cylinder is in a sealed state, and the pre-charge pressure of the lining will change with the temperature. The size change of the plastic lining is more obvious. When the temperature rises rapidly, the lining pressure will be greater than the bursting pressure, causing explosion damage to the lining; when the temperature drops too quickly, it will cause the plastic lining to separate from the carbon fiber reinforced layer, and the liner of the cylinder and the outer fiber resin will easily be delaminated and cured, affecting the fatigue life. The main reason for the above technical problems is the pressure change of the lining caused by the lack of real-time inflation and pressure maintenance of the lining.

[0006] In the prior art, in order to achieve uniform heating of the gas cylinder in the curing furnace, the gas cylinder is placed on the bearing of a guide rail vehicle, and the gas cylinder is driven to rotate evenly in the curing furnace through a rotating mechanism. On this basis, if it is desired to achieve inflation and pressure maintenance of the gas cylinder liner during the rotation of the gas cylinder, the prior art has not disclosed a similar structure. Summary of the Invention

[0007] The purpose of the present invention is to provide a mechanism for real-time inflation and pressure maintenance of Type IV bottles in a curing furnace, so as to solve the problem in the above-mentioned background technology that the lining is damaged or the plastic lining is separated from the carbon fiber reinforcement layer due to the change of the lining air pressure, which easily leads to the stratified curing of the inner liner of the gas cylinder and the outer fiber resin. The present invention realizes the rotation of the gas cylinder by connecting the rotary component to the gas cylinder, and is sealed and connected to the gas cylinder through a rotary joint, a core shaft, a ventilation component, etc., and the inflation and pressure maintenance of the gas cylinder during the rotation process can be achieved by synchronously rotating the ventilation component and the core shaft with the rotary component.

[0008] The cam is secured to the rear of the cylinder and has an angular channel that receives the air from the cam, and the cam has a channel that receives the air from the cam and is then passed through the cam chamber to allow the cam to flow freely. The front end of the sleeve is located inside the curing furnace, and the two ends of the Type IV gas cylinder are rotatably connected to the bearings at the two ends of the gas cylinder rotating bracket. A roller is provided at the bottom end of the gas cylinder rotating bracket, and the gas cylinder rotating bracket can be pushed into the curing furnace through the guide rail. The number of Type IV gas cylinders on the gas cylinder rotating bracket corresponds to the rotary assembly, and the ventilation handle of the Type IV gas cylinder is parallel to the sleeve, so that it is stuck in the notch of the side wall of the front end of the sleeve. At this time, the rotation of the sleeve can drive the ventilation handle to rotate, thereby driving the Type IV gas cylinder to rotate on the gas cylinder rotating bracket, and then adjust the core shaft that can slide along the sleeve, so that the ventilation assembly and the matching hole at the front end of the ventilation handle are sealed and connected and the axial movement of the core shaft is limited. The sleeve will drive the core shaft to rotate synchronously. In this way, the external inflation pump is connected to the internal hollow space of one end of the core shaft through the rotary joint, and the other end of the core shaft is sealed and connected to the ventilation handle through the ventilation assembly, so that the internal pressure of the liner of the Type IV gas cylinder can be inflated and maintained while the Type IV gas cylinder rotates and cures in the curing furnace.

[0009] A further technical solution of the present invention is that the structure used to realize the axial reciprocating motion of the core shaft includes: a rotating seat, a linear guide pair, a cylinder seat, a cylinder and a floating joint. The cylinder seat is installed on the outer furnace wall of the curing furnace, and the cylinder and the linear guide pair are arranged on the cylinder seat. The front end of the piston rod of the cylinder is connected to the rotating seat through a floating joint, the bottom of the rotating seat is connected to the linear guide pair, and the core shaft is rotatably connected to the rotating seat. Through the above technical solution, the cylinder drives the piston rod to move axially back and forth, thereby driving the rotating seat to slide laterally back and forth on the linear guide pair. While the rotating seat drives the core shaft to move axially back and forth, the core shaft can also rotate inside the rotating seat. After the core shaft slides axially to the predetermined position, the cylinder stops moving, thereby realizing the limitation of the axial motion of the core shaft.

[0010] A further technical solution of the present invention is that the specific structure of the rotating seat of the present application also includes: a rotating seat body, a first bearing and a first pressure cover. The rotating seat body is arranged at the top of the rotating seat, and the rotating seat body is provided with a through hole. The first bearings are arranged inside both ends of the rotating seat body through hole. The core shaft is rotatably connected to the rotating seat body through the two first bearings. A first spacer is arranged between the inner ends of the two first bearings, and the outer ends of the two first bearings are provided with a first pressure cover. The two first pressure covers are provided with a high-temperature resistant oil seal. A first outer spacer is arranged between the left first pressure cover and the core shaft, and the left end of the first outer spacer is provided with a first locking nut. According to the above technical solution, during installation, the two sets of first bearings and the first spacer are first inserted into the through hole inside the rotating seat body, and then the first outer spacer is installed on the outside of the left first bearing, and the high-temperature resistant oil seal is installed on the first pressure cover. Then, the two sets of first pressure covers are respectively installed on the outer ends of the two first bearings to compress the two first bearings respectively. Then, the core shaft is passed through this assembly, and the first outer spacer and the first locking nut are installed in sequence. The rotating seat as a whole is connected to the floating joint.

[0011] A further technical solution of the present invention is that the specific structure of the rotating assembly is as follows: the rotating assembly also includes a bearing seat, a second bearing and a second pressure cover, the bearing seat is arranged through the furnace wall of the curing furnace, the bearing seat is provided with a through hole, and second bearings are provided inside both ends of the bearing seat through hole, the sleeve is rotatably connected to the bearing seat through two second bearings, a second spacer is provided between the two second bearings, the outer end of the second bearing at the right end is provided with a second pressure cover, the outer end of the second bearing at the left end is provided with a second outer spacer, and the outer end of the second outer spacer is provided with a second locking nut. Through the above technical solution, during installation, the two groups of second bearings and the second outer spacer are sequentially installed in the bearing seat, and then the second pressure cover is installed from the right end to fix the second bearing at the right end, and then the sleeve is passed through this assembly from the right end, and the second outer spacer and the second locking nut are installed at the left end to fix the sleeve.

[0012] A further technical solution of the present invention is that the specific solution for realizing the rotation of the shaft sleeve in this application is: a sprocket is provided on the shaft sleeve located inside the curing furnace, and a motor is also provided on the furnace wall of the curing furnace. The shaft of the motor is provided with a sprocket, and the sprockets are connected by a chain drive. Multiple groups of rotating components can be provided above and below the furnace wall of the curing furnace, and each group of rotating components is driven by a sprocket of a motor.

[0013] A further technical solution of the present invention is that the implementation scheme that the core shaft of the present application can slide and rotate along the hollow inside of the sleeve is that a sliding groove is provided on the core shaft, and a linkage plate is provided inside the sleeve. The linkage plate is inserted into the sliding groove of the core shaft. When the sleeve rotates, the core shaft is driven to rotate by the linkage plate connected to the sliding groove. When the sleeve is stationary, the sliding groove of the core shaft can move axially along the linkage plate.

[0014] A further technical solution of the present invention is that the specific solution of the ventilation component of the present application is: the ventilation component includes a shaft and a nut, the interior of the shaft is hollow, one end of the shaft is sealed and connected to one end of the core shaft, and the other end of the shaft is installed with a nut.

[0015] A further technical solution of the present invention is that the shaft includes a first shaft segment, a second shaft segment, a third shaft segment and a fourth shaft segment, the right end of the core shaft is provided with a first matching hole and a matching shaft segment, the left end of the ventilation handle is provided with a second matching hole, the inner diameter of the matching shaft segment is the same as the diameter of the first matching hole, the outer diameter of the matching shaft segment is larger than the diameter of the first matching hole, the first shaft segment is a threaded segment, the diameter of the first shaft segment matches the diameter of the first matching hole, the length of the first shaft segment is less than the depth of the first matching hole plus the length of the matching shaft segment, the diameter of the second shaft segment is slightly smaller than the diameter of the second matching hole, the diameter of the third shaft segment is smaller than the diameter of the second shaft segment and larger than the diameter of the first shaft segment, the fourth shaft segment is a threaded segment, the diameter of the fourth shaft segment is the same as the diameter of the first shaft segment, the inner diameter of the nut matches the diameter of the fourth shaft segment, and the relative diameter of the left end of the nut The distance dimension of the vertices is smaller than the diameter of the second matching hole, and the right end of the nut is a conical structure. According to the above technical solution, when installing the ventilation assembly, first install a high-temperature resistant sealing ring on the matching shaft section at the right end of the core shaft, then install a high-temperature resistant sealing ring on the third shaft section and then install the nut on the fourth shaft section, then install the first shaft section of this assembly in the first matching hole of the core shaft, and finally install the high-temperature resistant O-ring into the slot machined on the right end face of the core shaft to complete the installation. The axis of the core shaft and the shaft are both machined with through holes for ventilation. The front end of the nut is in the form of a guide cone, which can be easily inserted into the second matching hole of the gas cylinder ventilation handle. During operation, the cylinder can be used as power to push the ventilation assembly into the second matching hole at the front end of the gas cylinder ventilation handle and press it tightly to achieve ventilation sealing.

[0016] A further technical solution of the present invention is that the right end of the sleeve includes a accommodating cavity and a snap-in groove, and the left end of the ventilation handle is provided with a snap-in portion, which is a notch symmetrically milled along the meridian of the ventilation handle. Through the above technical solution, the ventilation handle is clamped into the notch on the side wall of the right end of the sleeve, the left end of the snap-in portion of the ventilation handle is clamped into the accommodating cavity, and the snap-in portion of the ventilation handle is clamped into the snap-in groove. The snap-in portion and the snap-in groove are tightly matched, thereby realizing the synchronous rotation of the ventilation handle driven by the sleeve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The present invention realizes the rotation of the gas cylinder by connecting the rotary component with the gas cylinder, and is sealed and connected with the liner of the Type IV gas cylinder through a rotary joint, a core shaft, a ventilation component, etc., and the gas cylinder can be inflated and pressurized during the rotation process by synchronously rotating the ventilation component and the core shaft with the rotary component, thereby solving the problem of liner damage or separation of the plastic liner and the carbon fiber reinforcement layer caused by changes in the liner air pressure, which easily leads to stratification and solidification of the gas cylinder liner and the outer fiber resin. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention,

[0021] Figure 2 This is a schematic diagram of the rotating seat structure of the present invention.

[0022] Figure 3 This is a schematic diagram of the rotary assembly structure of the present invention.

[0023] Figure 4 For the present invention Figure 3 The cross-sectional view along the AA direction,

[0024] Figure 5 This is a schematic diagram of the structure of the ventilation component of the present invention.

[0025] Figure 6 For the present invention Figure 5 Cross-sectional view along direction BB.

[0026] In the figure: 101, rotary joint, 102, core shaft, 103, rotating seat, 104, rotary assembly, 105, ventilation assembly, 106, gas cylinder ventilation handle, 107, type IV gas cylinder, 108, cylinder, 109, cylinder seat, 110, floating joint, 111, linear guide pair, 112, gas cylinder rotating bracket, 1061, clamping portion, 1062, second matching hole, 1021, first matching hole, 1022, matching shaft segment;

[0027] 201. High-temperature resistant oil seal, 202. First gland, 203. Rotating seat, 204. First spacer, 205. First bearing, 206. First outer spacer, 207. First locking nut;

[0028] 301, shaft sleeve, 302, second locking nut, 303, second outer spacer, 304, bearing seat, 305, second bearing, 306, second spacer, 307, second gland, 308, sprocket, 309, linkage plate, 3011, accommodating chamber, 3012, snap-fit ​​groove;

[0029] 401. Shaft, 402. High-temperature-resistant O-ring, 403. High-temperature-resistant sealing ring, 404. Nut, 4011. First shaft segment, 4012. Second shaft segment, 4013. Third shaft segment, 4014. Fourth shaft segment. DETAILED DESCRIPTION

[0030] 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.

[0031] Example 1

[0032] like Figure 1As shown, a mechanism for real-time inflation and pressure maintenance of a type IV bottle in a curing oven comprises a core shaft 102, a vent assembly 105 and a rotary assembly 104. The core shaft 102 is hollow inside, and the front end of the core shaft 102 is located inside the curing oven and is sealed and connected to the vent assembly 105. The rear end of the core shaft 102 is located outside the curing oven and is sealed and rotatably connected to the rotary joint 101. The rotary joint is a prior art and its specific structure will not be described here. The rotary assembly 104 is arranged on the side wall of the curing oven and is provided with a rotatable sleeve 301. The sleeve 301 is hollow inside. The middle end of the core shaft 102 is slidably and rotatably connected to the inner hollow space of the sleeve 301. One end of the liner of the type IV gas cylinder 107 is sealed and the other end of the liner is provided with a ventilation handle 106 that is connected to the inner liner of the type IV gas cylinder 107. A notch is provided on the side wall of the front end of the sleeve 301 for the ventilation handle 106 to be inserted from the side wall, and the front end outside of the ventilation handle 106 is clamped with the hollow interior of the front end of the sleeve 301; through the above technical solution, the rotary assembly 104 is fixed through the side wall or door panel of the curing oven, and at least one group of rotary assembly 104 is provided, and the front end of the sleeve 301 is located inside the curing oven. In this way, the external air pump is connected to the internal hollow space at one end of the core shaft 102 through the rotary joint 101, and the other end of the core shaft 102 is sealed and connected to the ventilation handle 106 through the ventilation component 105, so that the internal pressure of the lining of the type IV gas cylinder 107 can be inflated and maintained while the type IV gas cylinder 107 rotates and cures in the curing furnace.

[0033] like Figure 2 As shown, the structure used to realize the axial reciprocating motion of the core shaft 102 in the above embodiment includes: a rotating seat 103, a linear guide pair 111, a cylinder seat 109, a cylinder 108 and a floating joint 110. The cylinder seat 109 is installed on the outer furnace wall of the curing furnace, and the cylinder 108 and the linear guide pair 111 are arranged on the cylinder seat 109. The front end of the piston rod of the cylinder 108 is connected to the rotating seat 103 through the floating joint 110, and the bottom of the rotating seat 103 is connected to the linear guide pair 111, and the core shaft 102 is rotatably connected to the rotating seat 103.

[0034] like Figure 2As shown, the specific structure of the rotating seat 103 in the above embodiment also includes: a rotating seat body 203, a first bearing 205 and a first pressure cover 202. The rotating seat body 203 is arranged at the top of the rotating seat 103, and the rotating seat body 203 is provided with a through hole. First bearings 205 are provided inside both ends of the through hole of the rotating seat body 203. The core shaft 102 is rotatably connected to the rotating seat body 203 through two first bearings 205. A first spacer 204 is provided between the inner ends of the two first bearings 205. The outer ends of the two first bearings 205 are provided with a first pressure cover 202. High-temperature resistant oil seals 201 are provided on the two first pressure covers 202. A first outer spacer 206 is provided between the left end first pressure cover 202 and the core shaft 102. The left end of the first outer spacer 206 is provided with a first locking nut 207.

[0035] like Figure 3 、 Figure 4 As shown, a further technical solution of the present invention is that the specific structure of the rotating component 104 is as follows: the rotating component 104 also includes a bearing seat 304, a second bearing 305 and a second pressure cover 307, the bearing seat 304 is provided with a through hole, and second bearings 305 are provided inside both ends of the through hole of the bearing seat 304, the sleeve 301 is rotatably connected to the bearing seat 304 through two second bearings 305, a second spacer 306 is provided between the two second bearings 305, the outer end of the second bearing 305 at the right end is provided with a second pressure cover 307, the outer end of the second bearing 305 at the left end is provided with a second outer spacer 303, and the outer end of the second outer spacer 303 is provided with a second locking nut 302.

[0036] In the transmission structure of the above embodiment, the specific scheme for realizing the rotation of the sleeve 301 is as follows: a sprocket 308 is provided on the sleeve 301 located inside the curing furnace, and a motor is also provided on the furnace wall of the curing furnace. The shaft of the motor is provided with a sprocket, and the sprockets are connected by a chain drive. Multiple groups of rotating components 104 can be provided above and below the furnace wall of the curing furnace, and each group of rotating components 104 is driven by a sprocket of a motor.

[0037] The implementation scheme of the core shaft 102 in the present application that can slide and rotate along the hollow interior of the sleeve 301 is that a sliding groove is provided on the core shaft 102, and a connecting plate 309 is provided inside the sleeve 301. The connecting plate 309 is inserted into the sliding groove of the core shaft 102. When the sleeve 301 rotates, the connecting plate 309 is connected to the sliding groove to drive the core shaft 102 to rotate. When the sleeve 301 is stationary, the sliding groove of the core shaft 102 can move axially along the connecting plate 309.

[0038] Example 2

[0039] like Figure 5 、 Figure 6As shown, based on Example 1, a further technical solution of the present invention is that the specific solution of the ventilation component 105 of the present application is as follows: the ventilation component 105 includes a shaft 401 and a nut 404. The interior of the shaft 401 is hollow, one end of the shaft 401 is sealed and connected to one end of the core shaft 102, and the other end of the shaft 401 is installed with a nut 404. The shaft 401 includes a first shaft segment 4011, a second shaft segment 4012, a third shaft segment 4013 and a fourth shaft segment 4014. The right end of the core shaft 102 is provided with a first matching hole 1021 and a matching shaft segment 1022. The left end of the ventilation handle 106 is provided with a second matching hole 1062. The inner diameter of the matching shaft segment 1022 is the same as the diameter of the first matching hole 1021, and the outer diameter of the matching shaft segment 1022 is larger than the diameter of the first matching hole 1021. The first shaft segment 4011 is a threaded segment. The diameter of the first shaft segment 4011 matches the diameter of the first matching hole 1021. The length of 011 is less than the depth of the first matching hole 1021 plus the length of the matching shaft segment 1022, the diameter of the second shaft segment 4012 is slightly smaller than the diameter of the second matching hole 1062, the diameter of the third shaft segment 4013 is smaller than the diameter of the second shaft segment 4012 and larger than the diameter of the first shaft segment 4011, the fourth shaft segment 4014 is a threaded segment, the diameter of the fourth shaft segment 4014 is the same as the diameter of the first shaft segment 4011, the inner diameter of the nut 404 is matched with the diameter of the fourth shaft segment 4014, the distance between the relative vertices of the left end of the nut 404 is smaller than the diameter of the second matching hole 1062, and the right end of the nut 404 is a conical structure.

[0040] A specific example of implementing the above embodiment is: the curing ovens in the prior art are of tunnel type and box type. The gas-filled pressure-maintaining mechanism of the present invention can be applied to the above two curing ovens. The gas-filled pressure-maintaining mechanism of the present invention is installed on the left side wall of the curing oven. Figure 1 As shown, along Figure 1The direction from outside to inside is the direction of travel of the gas cylinder rotating bracket 112. The two ends of the IV gas cylinder 107 are rotatably connected to the bearings at both ends of the gas cylinder rotating bracket 112. The bottom end of the gas cylinder rotating bracket 112 is provided with a roller. The gas cylinder rotating bracket 112 can be pushed into the curing furnace through the guide rail. The number of IV gas cylinders 107 on the gas cylinder rotating bracket 112 corresponds to the rotary assembly 104. After the gas cylinder rotating bracket 112 is pushed into the curing furnace, the axis of the ventilation handle 106 of the IV gas cylinder 107 is parallel to the axis of the shaft sleeve 301; the bearing seat 304 is arranged on the left furnace wall of the curing furnace, and the bearing seat 304 is provided with a ventilation Hole, second bearings 305 are provided inside both ends of the through hole of the bearing seat 304, the sleeve 301 is rotatably connected to the bearing seat 304 through the two second bearings 305, a second spacer 306 is provided between the two second bearings 305, the outer end of the second bearing 305 at the right end is provided with a second pressure cover 307, the outer end of the second bearing 305 at the left end is provided with a second outer spacer 303, the outer end of the second outer spacer 303 is provided with a second locking nut 302, through the above technical solution, when installing, the two groups of second bearings 305 and the second outer spacer 303 are sequentially installed in the bearing seat 304, and then the second pressure cover 307 is installed from the right end. The second bearing 305 at the right end is fixed, and then the sleeve 301 is inserted into the assembly from the right end, and the second outer spacer 303 and the second locking nut 302 are installed on the left end to fix the sleeve 301 so that it is clamped into the notch of the side wall at the front end of the sleeve 301; the right end of the sleeve 301 includes a accommodating cavity 3011 and a clamping groove 3012, and the left end of the ventilation handle 106 is provided with a clamping portion 1061, which is a notch symmetrically milled along the meridian of the ventilation handle 106. Through the above technical solution, the ventilation handle 106 is clamped into the notch on the side wall at the right end of the sleeve 301, and the clamping portion 1061 of the ventilation handle 106 is clamped into the notch on the side wall at the right end of the sleeve 301. The left end of the vent handle 106 is inserted into the accommodating cavity 3011, and the clamping portion 1061 of the vent handle 106 is inserted into the clamping groove 3012. The clamping portion 1061 and the clamping groove 3012 are tightly matched, so that the shaft sleeve 301 drives the vent handle 106 to rotate synchronously. At this time, the rotation of the shaft sleeve 301 can drive the vent handle 106 to rotate, thereby driving the IV type gas cylinder 107 to rotate on the gas cylinder rotating bracket 112. Then, the core shaft 102 that can slide along the inside of the shaft sleeve 301 is adjusted to make the vent assembly 105 and the matching hole at the front end of the vent handle 106 sealed and limit the axial movement of the core shaft 102. The shaft sleeve 301 will drive the core shaft 102 to rotate synchronously;When installing the ventilation assembly 105, first install a high-temperature resistant sealing ring on the matching shaft segment 1022 at the right end of the core shaft 102, then install a high-temperature resistant sealing ring on the third shaft segment 4013 and then install the nut 404 on the fourth shaft segment 4014, then install the first shaft segment 4011 of this assembly into the first matching hole 1021 of the core shaft 102, and finally install the high-temperature resistant O-ring into the groove processed on the right end face of the core shaft 102 to complete the installation. The core shaft 102 and the axis 401 are both processed with through holes for ventilation. The front end of the nut 404 is in the form of a guide cone, which can be easily inserted into the second matching hole 1062 of the ventilation handle 106. When working, the cylinder 108 can be used as power to push the ventilation assembly 105 into the second matching hole 1062 at the front end of the ventilation handle 106 and press it, thereby achieving ventilation sealing; when installing the rotating seat 103, first put the two sets of first bearings 205 The first spacer 204 is installed into the through hole inside the rotating seat body 203. Then, the first outer spacer 206 is installed outside the first bearing 205 at the left end. The high-temperature resistant oil seal 201 is installed on the first pressure cap 202. The two sets of first pressure caps 202 are then installed on the outer ends of the two first bearings 205, respectively, to tighten the two first bearings 205. The core shaft 102 is then inserted into this assembly, and the first outer spacer 206 and first locking nut 207 are installed in sequence. The rotating seat 103 is connected to the floating joint 110 as a whole. The cylinder 108 drives the piston rod to move axially back and forth, thereby driving the rotating seat 103 to slide horizontally back and forth on the linear guide pair 111. While the rotating seat 103 drives the core shaft 102 to move axially back and forth, the core shaft 102 can also rotate inside the rotating seat 103. After the core shaft 102 slides axially to a predetermined position, the cylinder 108 stops the movement, thereby limiting the axial movement of the core shaft 102.

[0041] When in use, first adjust the direction of the notch of the sleeve 301 so that the notch of the sleeve 301 is facing the outside, that is, the pushing direction of the cylinder rotating bracket 112, and push the cylinder rotating bracket 112 with the IV type gas cylinder 107 into the curing furnace so that the clamping portion 1061 of the ventilation handle 106 is just clamped into the clamping groove 3012 of the sleeve 301, and then fix the cylinder rotating bracket 112 to limit it from moving forward or backward along the pushing direction, and then open the cylinder 108 to make the core shaft 102 move axially to the right, and clamp the ventilation component 105 into the second matching hole 1062 of the ventilation handle 106, and then fix the cylinder 108. After fixing, use the air pump to align the IV type gas cylinder 107 with the cylinder rotating bracket 112. 7 is pressurized, and high-pressure air enters the lining of the type IV gas cylinder 107 in sequence through the inflation pump, the rotary joint 101, the core shaft 102, the ventilation component 105, and the ventilation handle 106, for example, to be pressurized to 70Mpa. A pressure sensor can be set in the ventilation component 105 to measure the internal pressure of the type IV gas cylinder 107. After the curing furnace is turned on, the existing process is used to perform staged heating and cooling operations on the type IV gas cylinder 107. While the type IV gas cylinder 107 is being cured, the lining is inflated and deflated in real time according to the pressure measured by the sensor, so that the lining maintains a constant pressure, thereby avoiding deformation of the lining due to pressure changes, and further improving the curing quality of the type IV gas cylinder 107.

[0042] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A mechanism for real-time inflation and pressure maintenance of Type IV bottles in a curing oven, characterized by: The invention comprises a core shaft (102), a ventilation component (105) and a rotary component (104), wherein the core shaft (102) is hollow inside, and the front end of the core shaft (102) is located inside the curing furnace and is sealed and connected to the ventilation component (105), and the rear end of the core shaft (102) is located outside the curing furnace and is sealed and rotatably connected to the rotary joint (101); and further comprises: a rotating seat (103), a linear guide pair (111), a cylinder seat (109), a cylinder (108) and a floating joint (110), wherein the cylinder seat (109) is installed on the outer wall of the curing furnace, and the cylinder (108) and the linear guide pair (111) are arranged on the cylinder seat (103). 09), the front end of the piston rod of the cylinder (108) is connected to the rotating seat (103) through a floating joint (110), the bottom of the rotating seat (103) is connected to the linear guide pair (111), and the core shaft (102) is rotatably connected to the rotating seat (103); the rotating assembly (104) is arranged on the side wall of the curing furnace, and the rotating assembly (104) is provided with a rotatable sleeve (301), the sleeve (301) is hollow inside, the middle end of the core shaft (102) is slidably and rotatably connected to the hollow inside of the sleeve (301), one end of the liner of the type IV gas cylinder (107) is sealed and the other end of the liner is provided with a screw thread that is connected to the type IV gas cylinder (107). The bottle (107) is lined with an internally connected vent handle (106), a notch is provided on the side wall of the front end of the sleeve (301) for the vent handle (106) to be inserted from the side wall, the front end of the vent handle (106) is engaged with the hollow interior of the front end of the sleeve (301), the vent assembly (105) includes a shaft and a nut (404), the shaft (401) is hollow inside, one end of the shaft (401) is sealed with one end of the core shaft (102), and the other end of the shaft (401) is installed with a nut (404), the shaft (401) includes a first shaft section (4011), a second shaft section (4012), and a third shaft section (4013) and a fourth shaft segment (4014), the right end of the core shaft (102) is provided with a first matching hole (1021) and a matching shaft segment (1022), the left end of the ventilation handle (106) is provided with a second matching hole (1062), the right end of the nut (404) is a conical structure, a high-temperature resistant sealing ring is installed on the matching shaft segment (1022) at the right end of the core shaft (102) and the third shaft segment (4013), the nut (404) is installed on the fourth shaft segment (4014), the first shaft segment (4011) is installed in the first matching hole (1021) of the core shaft (102), and the high-temperature resistant O-type sealing ring is installed in the groove on the right end face of the core shaft (102);The core shaft (102) is provided with a sliding groove, the shaft sleeve (301) is provided with a linkage plate (309), the linkage plate (309) is snapped into the sliding groove of the core shaft (102), the right end of the shaft sleeve (301) includes a receiving cavity (3011) and a snap-fit ​​groove (3012), the left end of the ventilation handle (106) is provided with a snap-fit ​​portion (1061), the snap-fit ​​portion (1061) is a notch milled symmetrically along the meridian of the ventilation handle (106), and the snap-fit ​​portion (1061) of the ventilation handle (106) can be snapped into the snap-fit ​​groove (3012).

2. The mechanism for real-time inflation and pressure maintenance of a Type IV bottle in a curing oven according to claim 1, characterized in that: The rotating seat (103) further comprises: a rotating seat body (203), a first bearing (205) and a first pressure cover (202), wherein the rotating seat body (203) is arranged at the top of the rotating seat (103), the rotating seat body (203) is provided with a through hole, first bearings (205) are provided inside both ends of the through hole of the rotating seat body (203), the core shaft (102) is rotatably connected to the rotating seat body (203) through the two first bearings (205), a first spacer (204) is provided between the inner ends of the two first bearings (205), the outer ends of the two first bearings (205) are provided with a first pressure cover (202), and high-temperature resistant oil seals (201) are provided on the two first pressure covers (202), a first outer spacer (206) is provided between the left end first pressure cover (202) and the core shaft (102), and a first locking nut (207) is provided at the left end of the first outer spacer (206).

3. The mechanism for real-time inflation and pressure maintenance of a Type IV bottle in a curing oven according to claim 1, characterized in that: The rotary assembly (104) further includes a bearing seat (304), a second bearing (305) and a second pressure cover (307). The bearing seat (304) is arranged on the furnace wall of the curing furnace. The bearing seat (304) is provided with a through hole. Second bearings (305) are provided inside both ends of the through hole of the bearing seat (304). The shaft sleeve (301) is rotatably connected to the bearing seat (304) through the two second bearings (305). A second spacer (306) is provided between the two second bearings (305). The outer end of the second bearing (305) at the right end is provided with a second pressure cover (307). The outer end of the second bearing (305) at the left end is provided with a second outer spacer (303). The outer end of the second outer spacer (303) is provided with a second locking nut (302).

4. The mechanism for real-time inflation and pressure maintenance of a Type IV bottle in a curing oven according to claim 1, characterized in that: A sprocket (308) is provided on a shaft sleeve (301) located inside the curing furnace. A motor is also provided on the wall of the curing furnace. The shaft of the motor is provided with a sprocket (308). The sprockets (308) are connected to each other through a chain transmission. Multiple groups of rotary assemblies (104) can be provided above and below the wall of the curing furnace. Each group of rotary assemblies (104) is driven by a sprocket (308) of a motor.

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