CN219345795U - Low-temperature high-pressure fluid transmission pipeline joint - Google Patents
Low-temperature high-pressure fluid transmission pipeline joint Download PDFInfo
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- CN219345795U CN219345795U CN202320543418.1U CN202320543418U CN219345795U CN 219345795 U CN219345795 U CN 219345795U CN 202320543418 U CN202320543418 U CN 202320543418U CN 219345795 U CN219345795 U CN 219345795U
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Abstract
The utility model relates to a low-temperature high-pressure fluid transmission pipeline joint, which comprises a male system and a female system connected with the male system, wherein the male system comprises a male flange, a male outer pipe and an extension pipe which are respectively arranged at the upper part and the lower part of the male flange, and a male inner pipe which is arranged in the male outer pipe and the extension pipe and penetrates through the male flange; the female head system comprises a female head flange connected to the male head flange, a female head inner pipe connected to the female head flange, and a female head outer pipe connected to the female head flange and sleeved outside the female head inner pipe; the joint structure of the low-temperature high-pressure fluid transmission pipeline joint adopts a flange form, so that the quick connection of low-temperature high-pressure fluid in the conveying process can be ensured, and the low-temperature high-pressure fluid transmission pipeline joint is flexible and reliable and is simple to operate; the matched design of the male and female connectors not only effectively ensures the heat insulation performance of the whole transmission system, but also ensures the strength of the whole connector.
Description
Technical Field
The utility model relates to the technical field of joints, in particular to a low-temperature high-pressure fluid transmission pipeline joint.
Background
Composite low temperature transfer lines, particularly low temperature high pressure transfer lines, play a critical role in low temperature high pressure refrigeration systems and transfer systems. The low temperature and high pressure transmission line generally connects a cold box and a Dewar, the cold box and a low temperature and high pressure storage tank, etc., for transmitting low temperature and high pressure low temperature fluid obtained in a low temperature system, such as: liquid helium, low temperature high pressure hydrogen, and the like. The low-temperature and high-pressure fluid transmission pipeline joint can be used for rapidly and efficiently connecting a low-temperature transmission pipeline with a cold box or a low-temperature and high-pressure storage tank and the like, wherein the high-pressure resistance, the sealing performance, the heat insulation performance and the operation flexibility are main indexes for judging the quality of the joint.
At present, a Bayonet joint is often used for connecting a low-temperature fluid transmission pipeline, and the vacuum plug-in type connection mode is convenient to detach and widely applied to the low-temperature transmission pipeline. However, no mature product is found on the market for joints for low temperature and high pressure fluids, even ultra-high pressure and low temperature fluids. The low-temperature fluid is heated and gasified in the flowing process, the pressure becomes high, and the future application of low-temperature high-pressure hydrogen is inevitably related to the problem of the transmission of the low-temperature high-pressure fluid, so the design of the joint of the low-temperature high-pressure fluid transmission pipeline is urgent.
Disclosure of Invention
An object of the present utility model is to provide a low-temperature high-pressure fluid transmission line joint, which can ensure high-efficiency, flexible and reliable connection between a low-temperature high-pressure transmission line and a cold box, a low-temperature high-pressure storage tank, etc., and ensure air tightness and heat insulation performance of the transmission line in a low-temperature high-pressure use environment.
The utility model provides a low-temperature high-pressure fluid transmission pipeline joint, which comprises the following components:
the male system comprises a male flange, a male outer pipe and an extension pipe which are respectively arranged at the upper part and the lower part of the male flange, and a male inner pipe which is arranged in the male outer pipe and the extension pipe and penetrates through the male flange; and
the female head system comprises a female head flange connected with the male head flange, a female head inner pipe connected with the female head flange and a female head outer pipe connected with the female head flange and sleeved outside the female head inner pipe;
the inner part of the extension pipe and the female flange form a vacuum cavity, the lower end of the male inner pipe is connected with the lower end of the female flange, and a self-tightening gasket is arranged at the joint of the extension pipe and the female flange.
In one embodiment of the present utility model, the extension tube is connected to the male inner tube through a thermal bridge to form a vacuum interlayer.
In one embodiment of the utility model, a vacuum multilayer is arranged between the male inner pipe and the male outer pipe, and the male inner pipe and the male outer pipe are positioned through an adiabatic support.
In one embodiment of the utility model, the insulating support is a G10 material.
In an embodiment of the utility model, a positioning clamping groove is formed in the upper portion of the male flange and used for positioning welding of the male outer pipe; the lower end of the male inner tube is provided with a groove for forming positioning fit with the self-tightening gasket.
In one embodiment of the present utility model, the self-tightening gasket is made of polytetrafluoroethylene.
In one embodiment of the utility model, the female flange has a flange body portion and a first funnel portion extending from the flange body portion and a second funnel portion extending from the first funnel portion; the outer side surface of the first funnel part is an inclined surface, and a positioning clamping groove is formed in the inclined surface and used for positioning welding of the female outer tube; the outer side surface of the second funnel part is a curved surface, and the tail end of the second funnel part is connected with the female head inner tube.
In one embodiment of the utility model, the female outer tube has a constant diameter end welded to the outside of the first funnel portion and a variable diameter end extending from the constant diameter end for mating connection with an outer tube of a vacuum chamber.
In an embodiment of the utility model, two sides of the male flange and the female flange are respectively connected through a structure of matching bolts and nuts, and a sealing gasket is further arranged between the male flange and the female flange.
In one embodiment of the utility model, the bolt is a full-threaded rod; the sealing gasket is an octagonal gasket, and annealed red copper is adopted as a material.
The low-temperature high-pressure fluid transmission pipeline connector adopts a flange structure, so that the quick connection of low-temperature high-pressure fluid in the conveying process can be ensured, and the connector is flexible and reliable and is simple to operate; the matched design of the male and female connectors not only effectively ensures the heat insulation performance of the whole transmission system, but also ensures the strength of the whole connector. The joint of the male and female heads is provided with a self-tightening gasket, so that the sealing performance of the inner tube is ensured in the use process; the extension pipe at the lower part of the male flange is connected with the male inner pipe through the heat bridge, so that the vacuum performance of the male pipeline is guaranteed, the length of the heat bridge is prolonged, and the pressure bearing capacity of the inner pipe is enhanced; meanwhile, the male flange and the female flange are designed to be full flanges, so that high pressure can be effectively borne; the external seal is sealed by adopting an octagonal gasket, so that the sealing performance can be effectively ensured.
Further objects and advantages of the present utility model will become fully apparent from the following description and the accompanying drawings.
Drawings
Fig. 1 is a schematic cross-sectional view of the joint for a low temperature and high pressure fluid transfer line according to a preferred embodiment of the present utility model.
Reference numerals illustrate:
a male system 10; a male flange 11; a male outer tube 12; an extension tube 13; a male inner tube 14; a vacuum interlayer 15; a thermally insulating support 16; a female head system 20; a female flange 21; a flange main body portion 211; a first funnel portion 212; a second funnel portion 213; a female inner tube 22; a female outer tube 23; a constant diameter end 231; a reducing end 232; a self-tightening washer 30; a vacuum chamber 40; a bolt 51; a nut 52; sealing gasket 60.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the utility model. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the utility model defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the utility model.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "vertical," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present utility model.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically connected, electrically connected or can be communicated with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The utility model provides a low-temperature high-pressure fluid transmission pipeline connector, which adopts a flange structure, can ensure the quick connection of low-temperature high-pressure fluid in the conveying process, and is flexible, reliable and simple to operate; the matched design of the male and female connectors not only effectively ensures the heat insulation performance of the whole transmission system, but also ensures the strength of the whole connector. At present, no low-temperature high-pressure fluid transmission pipeline joint exists in the market, and the design of the utility model can safely and effectively ensure the connection and transmission of low-temperature high-pressure fluid. As shown in fig. 1, a specific structure of a joint for a low temperature and high pressure fluid transmission line according to a preferred embodiment of the present utility model is illustrated.
Specifically, the low-temperature high-pressure fluid transmission pipeline joint comprises a male system 10 and a female system 20 connected to the male system 10.
Specifically, the male system 10 includes a male flange 11, a male outer tube 12 and an extension tube 13 respectively disposed at upper and lower portions of the male flange 11, and a male inner tube 14 disposed in the male outer tube 12 and the extension tube 13 and penetrating the male flange 11.
Specifically, the female system 20 includes a female flange 21 connected to the male flange 11, a female inner tube 22 connected to the female flange 21, and a female outer tube 23 connected to the female flange 21 and sleeved outside the female inner tube 22.
More specifically, the upper portion of the male flange 11 is provided with a positioning slot for positioning welding the male outer pipe 12, and the lower portion is provided with an extension pipe 13 for connecting with the male inner pipe 14 through a thermal bridge to form a vacuum interlayer 15, thereby having the effect of heat insulation and heat preservation and effectively guaranteeing the vacuum performance of the pipeline on the upper portion of the male flange 11.
In particular, the lower end of the male inner tube 14 is connected with the lower end of the female flange 21, and a self-tightening gasket 30 is arranged at the connection position of the two.
Meanwhile, the extension pipe 13 of the male flange 11 and the inside of the female flange 21 form a vacuum chamber 40, so that even if the self-tightening gasket 30 fails at a low temperature, the vacuum chamber 40 can ensure a certain high pressure to prevent the internal low temperature fluid from contacting the inner wall of the female outer pipe 23 to form heat leakage.
Further, a vacuum multi-layer is provided between the male inner pipe 14 and the male outer pipe 12, and the male inner pipe 14 and the male outer pipe 12 are positioned by an adiabatic support 16.
In this embodiment of the utility model, the thermally insulating support 16 is embodied in a G10 material.
It should be noted that the lower end of the male inner tube 14 is provided with a groove for forming a positioning fit with the self-tightening gasket 30, wherein the self-tightening gasket 30 is made of polytetrafluoroethylene material, and can withstand low temperature.
It can be appreciated that, by the pretightening force of the male flange 11 and the outward radial force of the internal low-temperature high-pressure fluid on the male inner pipe 14 in the use process, the connection between the male inner pipe 14 and the female flange 21 has a certain air tightness, so that a part of low-temperature high-pressure fluid can be ensured to flow out, and impact caused by overlarge flow can be avoided.
Further, the female flange 21 has a flange main body portion 211 and a first funnel portion 212 extending from the flange main body portion 211 and a second funnel portion 213 extending from the first funnel portion 212; wherein the outer side surface of the first funnel 212 is an inclined surface, and a positioning slot is arranged on the inclined surface for positioning and welding the female outer tube 23; the outer side surface of the second funnel 213 is a curved surface, and the end of the second funnel 213 is connected to the female inner tube 22.
It should be noted that the female inner pipe 22 is connected to the female flange 21 for connecting the transmission line to other components; the female outer tube 23 has a constant diameter end 231 welded to the outside of the first funnel 212 and a variable diameter end 232 extending from the constant diameter end 231, the variable diameter end 232 being adapted to be coupled to an external tube of a vacuum chamber.
In this particular embodiment, the tapered end 232 is a tubular structure of progressively smaller diameter.
It should be further noted that the two sides of the male flange 11 and the female flange 21 are respectively connected by a structure of matching bolts 51 and nuts 52, and a sealing gasket 60 is further provided between the male flange 11 and the female flange 21.
Specifically, the bolts 51 and the nuts 52 are mainly used for ensuring the tight connection between the male flange 11 and the female flange 21, wherein the bolts 51 are full threaded screws, so as to be convenient for adjusting tightness.
Specifically, the sealing gasket 60 is an octagonal gasket, and is placed in the positioning grooves of the male flange 11 and the female flange 21, so as to mainly perform a sealing function, and the material is annealed red copper.
The low-temperature high-pressure fluid transmission pipeline connector adopts a flange structure, so that the quick connection of low-temperature high-pressure fluid in the conveying process can be ensured, and the connector is flexible and reliable and is simple to operate; the matched design of the male and female connectors not only effectively ensures the heat insulation performance of the whole transmission system, but also ensures the strength of the whole connector. The self-tightening gasket 30 is arranged at the joint of the male and female heads, so that the sealing performance of the inner pipe is ensured in the use process; the extension pipe 13 at the lower part of the male flange 11 is connected with the male inner pipe 14 through a thermal bridge, so that the vacuum performance of a male pipeline is guaranteed, the length of the thermal bridge is prolonged, and the pressure bearing capacity of the inner pipe is enhanced; meanwhile, the male and female flanges 21 are designed to be full flanges by adopting high-pressure flanges, so that high pressure can be effectively borne; the external seal is sealed by adopting an octagonal gasket, so that the sealing performance can be effectively ensured.
In general, the utility model provides a low-temperature high-pressure fluid transmission pipeline joint which can ensure that a low-temperature high-pressure transmission pipeline and a cold box or a low-temperature high-pressure storage tank are connected efficiently, flexibly and reliably and ensure the air tightness and heat insulation performance of the transmission pipeline in a low-temperature high-pressure use environment.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The foregoing examples only represent preferred embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the utility model, which are all within the scope of the utility model. Accordingly, the scope of protection of the present utility model is to be determined by the appended claims.
Claims (10)
1. A cryogenic high pressure fluid transfer line connection comprising:
the male system comprises a male flange, a male outer pipe and an extension pipe which are respectively arranged at the upper part and the lower part of the male flange, and a male inner pipe which is arranged in the male outer pipe and the extension pipe and penetrates through the male flange; and
the female head system comprises a female head flange connected with the male head flange, a female head inner pipe connected with the female head flange and a female head outer pipe connected with the female head flange and sleeved outside the female head inner pipe;
the inner part of the extension pipe and the female flange form a vacuum cavity, the lower end of the male inner pipe is connected with the lower end of the female flange, and a self-tightening gasket is arranged at the joint of the extension pipe and the female flange.
2. The cryogenic high pressure fluid transfer line connection of claim 1, wherein the extension tube and the male inner tube are connected by a thermal bridge forming a vacuum sandwich.
3. The cryogenic high pressure fluid transfer line junction of claim 2 wherein a vacuum multi-layer is provided intermediate the male inner tube and the male outer tube and the male inner tube and the male outer tube are positioned by an insulating support.
4. A cryogenic high pressure fluid transfer line junction according to claim 3, wherein the insulating support is of G10 material.
5. The low temperature and high pressure fluid transmission line joint according to any one of claims 1 to 4, wherein a positioning clamping groove is arranged at the upper part of the male flange for positioning welding of the male outer pipe; the lower end of the male inner tube is provided with a groove for forming positioning fit with the self-tightening gasket.
6. A low temperature, high pressure fluid transfer line fitting according to any of claims 1 to 4, wherein the self-tightening gasket is of polytetrafluoroethylene material.
7. The low temperature, high pressure fluid transfer line joint of any one of claims 1 to 4, wherein the female flange has a flange body portion and a first funnel portion extending from the flange body portion and a second funnel portion extending from the first funnel portion; the outer side surface of the first funnel part is an inclined surface, and a positioning clamping groove is formed in the inclined surface and used for positioning welding of the female outer tube; the outer side surface of the second funnel part is a curved surface, and the tail end of the second funnel part is connected with the female head inner tube.
8. The cryogenic high pressure fluid transfer line coupling of claim 7, wherein the female outer tube has an equal diameter end welded to the exterior of the first funnel portion and a variable diameter end extending from the equal diameter end for mating connection with an outer tube of a vacuum chamber.
9. The low temperature and high pressure fluid transmission line joint according to any one of claims 1 to 4, wherein both sides of the male flange and the female flange are connected by a bolt and nut fitting structure, respectively, and a sealing gasket is further provided between the male flange and the female flange.
10. The cryogenic high pressure fluid transfer line junction of claim 9 wherein said bolt employs a full threaded screw; the sealing gasket is an octagonal gasket, and annealed red copper is adopted as a material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320543418.1U CN219345795U (en) | 2023-03-20 | 2023-03-20 | Low-temperature high-pressure fluid transmission pipeline joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320543418.1U CN219345795U (en) | 2023-03-20 | 2023-03-20 | Low-temperature high-pressure fluid transmission pipeline joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219345795U true CN219345795U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320543418.1U Active CN219345795U (en) | 2023-03-20 | 2023-03-20 | Low-temperature high-pressure fluid transmission pipeline joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219345795U (en) |
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2023
- 2023-03-20 CN CN202320543418.1U patent/CN219345795U/en active Active
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