Gas cylinder filling temperature control device
By designing a rotating tube and fan device in a vertical high-pressure hydrogen cylinder, the rotating tube is driven by the thrust of the filling gas to achieve the mixing of high-temperature gas and low-temperature gas, the problem of local high-temperature during the filling process of the vertical high-pressure hydrogen cylinder is solved, and the filling speed and safety are improved.
Patent Information
- Application Number
- CN202510699490.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-05-28
- Publication Date
- 2025-07-22
AI Technical Summary
During the filling process of vertical high-pressure hydrogen cylinders, single-inlet and high aspect ratio hydrogen cylinders are prone to local high temperatures, resulting in the inner liner temperature exceeding 85℃, affecting mechanical properties.
A gas cylinder filling temperature control device is designed, including a riser, a rotating tube, a flexible connecting rod and a fan. The thrust of the filled gas is used to drive the rotating tube to rotate, and the fan fans the high-temperature gas upward and mix with the low-temperature gas to avoid local high-temperature accumulation.
Gas mixing prevents local high temperatures in the bottle, improves filling speed and safety, and ensures uniformity in the bottle temperature.
Smart Images
Figure CN120351441A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the field of vertical high-pressure gas cylinders, and particularly to a gas cylinder filling temperature control device for filling vertical high-pressure gas cylinders. Background Art
[0002] During the filling process of high-pressure hydrogen gas cylinders, the temperature of the cylinder body needs to be controlled below 85°C. Among them, the inner liner of type IV cylinders is made of plastic material, with poor heat conduction ability and it is not easy to transfer the heat generated during the filling process to the outside. Therefore, during the filling process, there will be a phenomenon of locally excessive temperature of the cylinder body, which will affect the mechanical properties and other performance indicators of the non-metallic composite material of the cylinder body.
[0003] For single-inlet high-pressure hydrogen cylinders, if the aspect ratio of the hydrogen cylinder is too large, it will cause a locally high-temperature area at the bottom of the cylinder, resulting in the bottom of the inner liner being heated by the high-temperature gas, and there is a risk that the local temperature of the cylinder liner exceeds 85°C. Therefore, this situation needs to be dealt with. For double-inlet high-pressure hydrogen cylinders, since during filling, the two gas flows are fully convected inside the cylinder, the overall temperature of the general gas is relatively uniform, and the risk of local high temperature of the cylinder body is small.
[0004] Since single-inlet high-pressure hydrogen cylinders with a high aspect ratio feature still have applicability in certain situations, such high-pressure hydrogen cylinders are still being produced. Now there is an urgent need for a device that can make the gas temperature inside the hydrogen cylinder tend to be uniform during filling for vertical high-pressure hydrogen cylinders with a single inlet and a high aspect ratio feature, so as to prevent local high temperature from occurring on the cylinder body of the gas cylinder. Summary of the Invention
[0005] The technical problem to be solved by the present invention is: to provide a gas cylinder filling temperature control device for vertical high-pressure gas cylinders.
[0006] To solve the above problems, the technical solution adopted by the present invention is: a gas cylinder filling temperature control device, characterized in that it includes: a riser pipe, a rotating pipe, a flexible connecting rod, and a fan installed in the gas cylinder. The upper port of the riser pipe is fixedly connected to the inner port of the bottle mouth valve on the bottle mouth of the gas cylinder. The upper port of the rotating pipe is connected and communicated with the lower port of the riser pipe through a connecting mechanism, and the rotating pipe can rotate around the riser pipe through the connecting mechanism. The lower port of the rotating pipe is communicated with the inner cavity of the gas cylinder. The upper end of the flexible connecting rod is fixed to the rotating pipe, and the flexible connecting rod is coaxial with the riser pipe. The fan is located at the bottom of the gas cylinder and is fixed to the lower end of the flexible connecting rod. The gas flows through the bottle mouth valve, the riser pipe, and the rotating pipe and then is filled into the gas cylinder. When the high-speed gas sprays out from the lower port of the rotating pipe, it can generate a thrust for driving the rotating pipe to rotate. After the rotating pipe rotates, it can drive the fan to rotate through the flexible connecting rod. The high-temperature gas at the bottom of the gas cylinder can be accelerated to move upward under the flapping of the fan and is accelerated to mix with the low-temperature gas at the top of the gas cylinder, so as to prevent high-temperature gas from accumulating at the bottom of the gas cylinder and avoid local high temperature on the cylinder body.
[0007] Further, for a gas cylinder filling temperature control device as described above, wherein: the rotating pipe is composed of a vertical pipe, a long horizontal pipe, and a short horizontal pipe connected together. The upper port of the vertical pipe is the upper port of the rotating pipe. The long horizontal pipe is vertically connected to the vertical pipe through an elbow, and the short horizontal pipe is vertically connected to the long horizontal pipe through an elbow. The tail port of the short horizontal pipe is the lower port of the rotating pipe.
[0008] Further, for a gas cylinder filling temperature control device as described above, wherein: the structure of the connecting mechanism is as follows: an annular thin sheet is fixed on the lower port of the vertical pipe, and an annular thin sheet is also fixed on the upper port of the rotating pipe. The two annular thin sheets are aligned and abutted against each other up and down. A locking ring is also provided. The locking ring is sleeved outside the two annular thin sheets to limit the two annular thin sheets, so that the upper port of the rotating pipe and the lower port of the vertical pipe can be butt-connected and communicated, and the rotation of the rotating pipe is not hindered.
[0009] Further, for a gas cylinder filling temperature control device as described above, wherein: the rotating pipe, the flexible connecting rod, and the fan can be made of plastic materials.
[0010] Further, for a gas cylinder filling temperature control device as described above, wherein: the rotating pipe, the flexible connecting rod, and the fan can be integrally formed.
[0011] The advantages of the present invention are as follows: during the gas filling process of the gas cylinder filling temperature control device described above, the filling gas can be used to drive the fan installed near the bottom of the cylinder to rotate. After the fan rotates, it can fan the stagnant high-temperature gas at the bottom to mix with the low-temperature gas at the upper part of the cylinder body, thereby preventing the occurrence of excessive local high temperature on the cylinder body, and thus increasing the upper limit value of the gas filling speed. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a schematic structural diagram of a gas cylinder filling temperature control device described in the present invention.
[0013] Figure 2 It is a schematic diagram of a structure of the rotating pipe.
[0014] Figure 3 It is a schematic diagram of a structure of the connecting mechanism. DETAILED DESCRIPTION OF THE INVENTION
[0015] The present invention will be further described in detail below with reference to specific embodiments and the accompanying drawings.
[0016] As Figure 1As shown in the figure, a temperature control device for gas cylinder filling includes: a riser 1, a rotating pipe 2, a flexible connecting rod 3, and a fan 4 installed in the gas cylinder 5. The upper port of the riser 1 is fixedly connected to the inner port of the bottle mouth valve on the bottle mouth of the gas cylinder 5. The upper port of the rotating pipe 2 is connected and communicated with the lower port of the riser 1 through a connecting mechanism, and the rotating pipe 2 can rotate around the riser 1 through the connecting mechanism. The lower port of the rotating pipe 2 is communicated with the inner cavity of the gas cylinder 5. The upper end of the flexible connecting rod 3 is fixed to the rotating pipe 2, and the flexible connecting rod 3 is coaxial with the riser 1. The fan 4 is located at the bottom of the gas cylinder 5 and is fixed to the lower end of the flexible connecting rod 3. The gas flows through the bottle mouth valve, the riser 1, and the rotating pipe 2 and then is filled into the gas cylinder 5. When the high-speed gas jets out from the lower port of the rotating pipe 2, a thrust can be generated to drive the rotating pipe 2 to rotate. After the rotating pipe 2 rotates, it can drive the fan 4 to rotate through the flexible connecting rod 3. The high-temperature gas at the bottom of the gas cylinder 5 can be accelerated to move upward under the flapping of the fan 4 and is accelerated to mix with the low-temperature gas at the top of the gas cylinder 5, so as to prevent high-temperature gas from accumulating at the bottom of the gas cylinder 5 and avoid local high temperature of the bottle body.
[0017] As Figure 2 shown, in this embodiment, the rotating pipe 2 is composed of a vertical pipe 6, a long horizontal pipe 7, and a short horizontal pipe 8 connected. The upper port of the vertical pipe 6 is the upper port of the rotating pipe 2. The long horizontal pipe 7 is vertically communicated with the vertical pipe 6 through an elbow. The short horizontal pipe 8 is vertically communicated with the long horizontal pipe 7 through an elbow. The tail port of the short horizontal pipe 8 is the lower port of the rotating pipe 2.
[0018] As Figure 3 shown, in this embodiment, the structure of the connecting mechanism is: an annular thin sheet 9 is fixed on the lower port of the riser 1, and an annular thin sheet 9 is also fixed on the upper port of the rotating pipe 2. The two annular thin sheets 9 are aligned and abutted up and down. A locking ring 10 is also provided. The locking ring 10 is sleeved outside the two annular thin sheets 9 to limit the two annular thin sheets 9, so that the upper port of the rotating pipe 2 and the lower port of the riser 1 can be connected and communicated, and it can prevent the rotating pipe 2 from rotating.
[0019] The flexible connecting rod 3 and the fan 4 are made of plastic material, so that they can resist deformation and return to their original state. For the convenience of manufacturing, the flexible connecting rod 3 and the fan 4 are usually integrally formed. The rotating pipe 2 is made of metal material. In actual production, when the material requirements are met, the rotating pipe 2 can also be made of plastic material. For the convenience of manufacturing, the rotating pipe 2, the flexible connecting rod 3, and the fan 4 can also be integrally formed.
Claims
1. A temperature control device for gas cylinder filling, characterized in that: Comprising: A riser pipe, a rotating pipe, a flexible connecting rod, and a fan installed in a gas cylinder. The upper port of the riser pipe is fixedly connected to the inner port of the bottle mouth valve on the bottle mouth of the gas cylinder. The upper port of the rotating pipe is connected and communicated with the lower port of the riser pipe through a connecting mechanism, and the rotating pipe can rotate around the riser pipe through the connecting mechanism. The lower port of the rotating pipe is communicated with the inner cavity of the gas cylinder. The upper end of the flexible connecting rod is fixed to the rotating pipe, and the flexible connecting rod is coaxial with the riser pipe. The fan is located at the bottom of the gas cylinder and is fixed to the lower end of the flexible connecting rod. The gas flows through the bottle mouth valve, the riser pipe, and the rotating pipe and then is filled into the gas cylinder. When the high-speed gas jets out from the lower port of the rotating pipe, a thrust for driving the rotating pipe to rotate can be generated. After the rotating pipe rotates, it can drive the fan to rotate through the flexible connecting rod. The high-temperature gas at the bottom of the gas cylinder can be accelerated to move upward under the flapping of the fan and is accelerated to mix with the low-temperature gas at the top of the gas cylinder, thereby preventing the high-temperature gas from accumulating at the bottom of the gas cylinder and avoiding local high temperature of the bottle body.
2. The temperature control device for gas cylinder filling according to claim 1, characterized in that: The rotating pipe is composed of a vertical pipe, a long horizontal pipe, and a short horizontal pipe connected together. The upper port of the vertical pipe is the upper port of the rotating pipe. The long horizontal pipe is vertically communicated with the vertical pipe through an elbow. The short horizontal pipe is vertically communicated with the long horizontal pipe through an elbow. The tail port of the short horizontal pipe is the lower port of the rotating pipe.
3. A gas cylinder filling temperature control device according to claim 1 or 2, characterized in that: The structure of the connecting mechanism is as follows: An annular thin sheet is fixed on the lower port of the riser pipe, and an annular thin sheet is also fixed on the upper port of the rotating pipe. The two annular thin sheets are aligned and abutted against each other. A locking ring is also provided. The locking ring is sleeved outside the two annular thin sheets to limit the two annular thin sheets, so that the upper port of the rotating pipe and the lower port of the riser pipe can be connected and communicated, and the rotation of the rotating pipe is not hindered.
4. A cylinder filling temperature control device according to claim 1 or 2, characterized in that: The flexible connecting rod and the fan are made of plastic material.
5. A gas cylinder filling temperature control device according to claim 1 or 2, characterized in that: The rotating pipe, the flexible connecting rod, and the fan are made of plastic material.
6. The temperature control device for gas cylinder filling according to claim 5, wherein: The rotating pipe, the flexible connecting rod, and the fan are integrally formed.