Heat insulation flange connecting mechanism for conveying and butting cryogenic liquid
By designing an insulated flange connection mechanism for cryogenic liquid transportation, and utilizing the combination structure of male and female flanges and locking rings, the problems of leakage and heat loss at the connection point during liquid hydrogen transportation were solved, achieving efficient transportation of cryogenic liquids and reducing evaporation loss.
Patent Information
- Application Number
- CN202423143308.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-19
- Publication Date
- 2025-11-21
- Estimated Expiration
- 2034-12-19
AI Technical Summary
In existing technologies, leaks are common at the joints during liquid hydrogen transport, resulting in poor sealing performance, significant heat loss, and difficulty in effectively reducing the evaporation loss of cryogenic liquids.
An insulated flange connection mechanism for cryogenic liquid transportation is designed, including a male docking assembly and a female docking assembly. By combining the male and female flanges, along with a rotatable locking ring and an annular pressure plate, a sealed connection of the connecting pipe is achieved, and heat exchange is reduced by a limit snap ring and a sealing ring.
It effectively reduces the evaporation loss of cryogenic liquids during the transfer and receiving process, improves the sealing performance at the docking point, facilitates disassembly and assembly, and reduces heat loss.
Smart Images
Figure CN223579223U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to cryogenic liquid delivery technical field, concretely relates to cryogenic liquid delivery butt joint with heat insulation flange connecting mechanism. BACKGROUND
[0002] Liquid hydrogen is an important low-temperature liquid clean fuel at present, has higher energy conversion rate, fuel economy is good, clean and pollution-free and so on, and its application in each field is also more and more widely.
[0003] In the delivery, receiving and transfer of liquid hydrogen and other cryogenic liquids, how to reduce the evaporation loss of cryogenic liquids has been a big problem in the industry. Inevitable heat transfer (heat exchange) with the external environment during the delivery of liquid hydrogen, the existing technology generally uses laying vacuum pipeline to reduce the heat exchange between the inner tube and the outer tube, reduce the evaporation loss of liquid hydrogen, however, when the vacuum pipeline of liquid hydrogen delivery is connected with the liquid hydrogen filling hose, leakage, poor sealing performance and other problems often occur at the connection, resulting in a large amount of heat loss. CONTENT OF THE UTILITY MODEL
[0004] The utility model solves the technical problem of providing a cryogenic liquid delivery butt joint with heat insulation flange connecting mechanism that can reduce the evaporation loss of cryogenic liquids during transfer and receiving, reduce heat leakage at the butt joint, and facilitate disassembly and assembly.
[0005] In order to solve the above problems, the utility model adopts the technical scheme: the heat insulation flange connecting mechanism for cryogenic liquid delivery butt joint, characterized by: including: male butt joint assembly and female butt joint assembly, the structure of male butt joint assembly includes: male flange plate, a rotatable male locking ring is sleeved on the outer ring of male flange plate, male annular pressure table is arranged on the inner ring of male locking ring, an insertion outer pipe is arranged in front of male flange plate, a male butt joint pipe is arranged at the back of male flange plate, an insertion inner pipe is arranged in the inner ring hole of male flange plate, the insertion outer pipe and male butt joint pipe are all left with clearance and are sleeved on the outside of insertion inner pipe, the rear end of insertion outer pipe is opposite to the front end port of male flange plate inner ring, the front end of male butt joint pipe is opposite to the rear end port of male flange plate inner ring, so that the insertion outer pipe and male butt joint pipe can be communicated through male flange plate, the rear end port of male butt joint pipe is used for being opposite to the outer pipe of delivery hose, the rear end port of insertion inner pipe is used for being opposite to the inner pipe of delivery hose, a male annular part is fixed between the front end of insertion outer pipe and insertion inner pipe, and the male annular part can seal the opening between the front end of insertion outer pipe and insertion inner pipe; the structure of female butt joint assembly includes: female flange plate, a rotatable female locking ring is sleeved on the outer ring of female flange plate, female annular pressure table is arranged on the inner ring of female locking ring, female butt joint pipe, butt joint outer pipe and butt joint inner pipe are arranged at the back of female flange plate, the female butt joint pipe is left with clearance and is sleeved on the outside of butt joint outer pipe, the butt joint outer pipe is left with clearance and is sleeved on the outside of butt joint inner pipe, the front end of female butt joint pipe is opposite to the rear end port of female flange plate inner ring, the front end of butt joint outer pipe is opposite to the front end port of female flange plate inner ring, a female annular part is fixed between the front end of butt joint inner pipe and the rear end of butt joint outer pipe, and the female annular part can fix and seal between the front end of butt joint inner pipe and the rear end of butt joint outer pipe, the rear end port of female butt joint pipe is used for being connected with the outer pipe of vacuum delivery pipeline, and the rear end port of butt joint inner pipe is used for being connected with the inner pipe of vacuum delivery pipeline; when butt joint, male flange plate and female flange plate abut front and back, sealing ring is arranged between male flange plate and female flange plate and is used for sealing, insertion outer pipe and insertion inner pipe are inserted into butt joint outer pipe, insertion inner pipe is opposite to butt joint inner pipe and is communicated, male annular part and female annular part abut and seal, male locking ring and female locking ring are screw-connected, locking ring located on the inside is sleeved on the outside of male flange plate and female flange plate and is limited, and male annular pressure table and female annular pressure table can clamp and lock male flange plate and female flange plate after two locking rings are screwed.
[0006] Further, the heat insulation flange connecting mechanism for cryogenic liquid delivery butt joint, wherein: male limit snap spring is arranged on male flange plate, and the male limit snap spring is blocked at the back of male annular pressure table and is used for preventing male locking ring from moving backward and separating from male flange plate.
[0007] Furthermore, in the aforementioned cryogenic liquid transport docking insulated flange connection mechanism, a female limiting snap ring is provided on the female flange, which blocks the rear of the female annular pressure plate to prevent the female locking ring from moving backward and disengaging from the female flange.
[0008] Furthermore, in the aforementioned cryogenic liquid transport docking insulated flange connection mechanism, the outer ring sidewalls of both the male and female locking rings are provided with slots for the locking points on the inner ring of a wrench to engage with. After the locking points on the wrench engage with the slots on the locking rings, the wrench can drive the locking rings to rotate.
[0009] Furthermore, in the aforementioned cryogenic liquid transport docking insulated flange connection mechanism, the female annular component has a sealing cone surface at its front end, and the male annular component has a sealing sleeve fitted on its front end. When the male and female annular components abut against each other, the front end of the sealing sleeve can cooperate with the sealing cone surface to achieve a seal.
[0010] The advantages of this utility model are: the insulated flange connection mechanism for cryogenic liquid transportation docking can reduce the evaporation loss of cryogenic liquid during the transfer and receiving process, reduce heat leakage at the docking point, and the male docking assembly and female docking assembly can be separated by unscrewing the male locking ring and the female locking ring, thereby facilitating docking and disassembly. Attached Figure Description
[0011] Figure 1 This is a schematic diagram of the structure of the insulated flange connection mechanism for cryogenic liquid transportation and docking described in this utility model.
[0012] Figure 2 for Figure 1 A schematic diagram of the Zhonggong docking component.
[0013] Figure 3 for Figure 1 A schematic diagram of the structure of the motherboard docking assembly. Detailed Implementation
[0014] The present invention will now be described in further detail with reference to specific embodiments and accompanying drawings.
[0015] like Figure 1 , Figure 2 , Figure 3As shown, the cryogenic liquid delivery butt-joint adiabatic flange connection mechanism comprises a male butt-joint component and a female butt-joint component. The male butt-joint component comprises a male flange plate 1, a rotatable male locking ring 2 sleeved on the outer ring of the male flange plate 1, an outer thread provided on the front section of the outer sidewall of the male locking ring 2, a male annular pressing table 3 provided on the inner ring of the male locking ring 2, an insertion outer pipe 4 provided in front of the male flange plate 1, a male butt-joint pipe 5 provided behind the male flange plate 1, an insertion inner pipe 6 inserted into the outer side of the insertion outer pipe 4 and the male butt-joint pipe 5 with a gap, the rear end of the insertion outer pipe 4 being opposite to the front end port of the inner ring of the male flange plate 1, the front end of the male butt-joint pipe 5 being opposite to the rear end port of the inner ring of the male flange plate 1, so that the insertion outer pipe 4 and the male butt-joint pipe 5 can be connected through the male flange plate 1, the rear end port of the male butt-joint pipe 5 being used for being opposite to the outer pipe of the delivery hose 21, the rear end port of the insertion inner pipe 6 being used for being opposite to the inner pipe of the delivery hose 21, a male annular member 7 being fixed between the front ends of the insertion outer pipe 4 and the insertion inner pipe 6, the male annular member 7 being capable of sealing the opening between the front ends of the insertion outer pipe 4 and the insertion inner pipe 6. The female butt-joint component comprises a female flange plate 8, a rotatable female locking ring 9 sleeved on the outer ring of the female flange plate 8, an inner thread provided on the front end of the inner sidewall of the female locking ring 9, a female annular pressing table 10 provided on the inner ring of the female locking ring 9, a female butt-joint pipe 11, a butt-joint outer pipe 12 and a butt-joint inner pipe 13 provided behind the female flange plate 8, the female butt-joint pipe 11 being sleeved on the outer side of the butt-joint outer pipe 12 with a gap, the butt-joint outer pipe 12 being sleeved on the outer side of the butt-joint inner pipe 13 with a gap, the front end of the female butt-joint pipe 11 being opposite to the rear end port of the inner ring of the female flange plate 8, the front end of the butt-joint outer pipe 12 being opposite to the front end port of the inner ring of the female flange plate 8, a female annular member 14 being fixed between the front end of the butt-joint inner pipe 13 and the rear end of the butt-joint outer pipe 12, the female annular member 14 being capable of fixing and sealing between the front end of the butt-joint inner pipe 13 and the rear end of the butt-joint outer pipe 12, the rear end port of the female butt-joint pipe 11 being used for being connected with the outer pipe of the vacuum delivery pipeline 22, the rear end port of the butt-joint inner pipe 13 being used for being connected with the inner pipe of the vacuum delivery pipeline 22. During butt-joint, the male flange plate 1 and the female flange plate 8 are abutted front to back, a sealing ring 15 is arranged between the male flange plate 1 and the female flange plate 8 for sealing, the male locking ring 2 is sleeved on the outer side of the male flange plate 1 and the female flange plate 8 for limiting, the insertion outer pipe 4 and the insertion inner pipe 6 are inserted into the butt-joint outer pipe 12, the insertion inner pipe 6 is opposite to and connected with the butt-joint inner pipe 13, the male annular member 7 and the female annular member 14 are abutted and sealed, the front end outer side of the male locking ring 2 and the front end inner side of the female locking ring 9 are threadedly connected, the male annular pressing table 3 and the female annular pressing table 10 can clamp and lock the male flange plate 1 and the female flange plate 8 after the two locking rings are screwed.
[0016] The above adiabatic flange connection mechanism is commonly used for filling and filling of liquid hydrogen and other cryogenic liquids to prevent liquid hydrogen from being vaporized by heat during filling.
[0017] In this embodiment, a male limit snap spring 16 is arranged on the male flange plate 1, which blocks the rear of the male annular pressing platform 3 to prevent the male locking ring 2 from moving backward and separating from the male flange plate 1. A female limit snap spring 17 is arranged on the female flange plate 8, which blocks the rear of the female annular pressing platform 10 to prevent the female locking ring 9 from moving backward and separating from the female flange plate 8. This arrangement is to facilitate the installation and disassembly of the mechanism.
[0018] A clamping groove 18 is arranged on the outer wall of the male locking ring 2 and the female locking ring 9, which is used for clamping the clamping point on the inner wall of the wrench. After the clamping point on the wrench is clamped into the clamping groove 18 on the locking ring, the wrench can drive the locking ring to rotate.
[0019] A sealing cone surface 19 is arranged on the front end of the female annular member 14, and a sealing sleeve 20 is sleeved on the front end of the male annular member 7. When the male annular member 7 and the female annular member 14 abut against each other, the front end of the sealing sleeve 20 can abut against the sealing cone surface 19 to seal, which can better prevent the leakage of cryogenic liquid.
[0020] In operation, the outer pipe of the vacuum conveying pipeline 22 is connected to the rear end of the female connecting pipe 11, and the inner pipe of the vacuum conveying pipeline 22 is connected to the rear end of the connecting inner pipe 13. The vacuum conveying pipeline 22 is used for long-distance conveying of cryogenic liquid. The outer pipe of the conveying hose 21 is connected to the rear end of the male connecting pipe 5, and the inner pipe of the conveying hose 21 is connected to the rear end of the inserting inner pipe 6. The conveying hose 21 is used for receiving and transferring cryogenic liquid. After vacuumizing through the vacuumizing port, each A cavity is in a vacuum state, and the B cavity is in an atmospheric air state. The multi-layer A cavity cooperates with the thin and long pipe wall to enhance the effect of preventing heat exchange between the cryogenic liquid and the external environment, thereby significantly reducing the evaporation loss of the cryogenic liquid during the transferring and receiving process.
Claims
1. An insulated flange connection mechanism for cryogenic liquid transportation, characterized in that: include: The male and female mating assemblies are provided. The male mating assembly includes: a male flange; a rotatable male locking ring fitted on the outer ring of the male flange; a male annular pressure plate on the inner ring of the male locking ring; an insert outer pipe positioned in front of the male flange; a male mating pipe positioned behind the male flange; an insert inner pipe inserted through a hole in the inner ring of the male flange; and the insert outer pipe and the male mating pipe fitted onto the outer side of the insert inner pipe with gaps. The rear end of the insert outer pipe is aligned with the front end of the inner ring of the male flange, and the front end of the male mating pipe is aligned with the rear end of the inner ring of the male flange. The male and female connectors are aligned so that the outer and inner tubes can be connected via a male flange. The rear end of the male connector is used to connect with the outer tube of the delivery hose, and the rear end of the inner tube is used to connect with the inner tube of the delivery hose. A male annular component is fixed between the front ends of the outer and inner tubes to seal the opening between them. The female connector assembly includes a female flange, a rotatable female locking ring fitted on the outer ring of the female flange, and a female annular pressure plate on the inner ring of the female locking ring. The female connector is located behind the female flange. The system consists of a female connector, an outer connecting pipe, and an inner connecting pipe. The female connector, with a gap, is fitted onto the outside of the outer connecting pipe, and the outer connecting pipe, also with a gap, is fitted onto the outside of the inner connecting pipe. The front end of the female connector aligns with the rear end of the inner ring of the female flange, and the front end of the outer connecting pipe aligns with the front end of the inner ring of the female flange. A female annular component is fixed between the front end of the inner connecting pipe and the rear end of the outer connecting pipe. This annular component secures and seals the connection between the front end of the inner connecting pipe and the rear end of the outer connecting pipe. The rear end of the female connector is used to connect to the outer pipe of the vacuum conveying pipeline. The inner connecting pipe... The rear port is used to connect with the inner tube of the vacuum conveying pipeline; during docking, the male flange and the female flange abut against each other, and a sealing ring is set between the male flange and the female flange for sealing. The outer tube and the inner tube are inserted into the docking outer tube, and the inner tube is connected to the docking inner tube. The male ring and the female ring abut against each other for sealing. The male locking ring and the female locking ring are threaded together. The locking ring located on the inner side is sleeved on the outer side of the male flange and the female flange for limiting. The male ring pressure plate and the female ring pressure plate can clamp and lock the male flange and the female flange after the two locking rings are tightened together.
2. The insulated flange connection mechanism for cryogenic liquid transportation and docking according to claim 1, characterized in that: A male limit snap ring is provided on the male flange. The male limit snap ring blocks the rear of the male annular pressure plate to prevent the male locking ring from moving backward and disengaging from the male flange.
3. The insulated flange connection mechanism for cryogenic liquid transportation and docking according to claim 1 or 2, characterized in that: A female limiting snap ring is provided on the female flange. The female limiting snap ring blocks the rear of the female annular pressure plate to prevent the female locking ring from moving backward and disengaging from the female flange.
4. The insulated flange connection mechanism for cryogenic liquid transportation and docking according to claim 1 or 2, characterized in that: Both the male and female locking rings have slots on their outer sidewalls for the wrench to engage with the locking points on the inner ring. Once the wrench engages with the locking points on the locking ring, the wrench can drive the locking ring to rotate.
5. The insulated flange connection mechanism for cryogenic liquid transportation and docking according to claim 1 or 2, characterized in that: The female annular component has a sealing cone surface at its front end, and the male annular component has a sealing sleeve fitted on its front end. When the male and female annular components abut against each other, the front end of the sealing sleeve can cooperate with the sealing cone surface to achieve a seal.