CN218441195U - Labyrinth type liquid nitrogen transmission pipe movable joint - Google Patents
Labyrinth type liquid nitrogen transmission pipe movable joint Download PDFInfo
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- CN218441195U CN218441195U CN202222215366.3U CN202222215366U CN218441195U CN 218441195 U CN218441195 U CN 218441195U CN 202222215366 U CN202222215366 U CN 202222215366U CN 218441195 U CN218441195 U CN 218441195U
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Abstract
The utility model discloses a labyrinth liquid nitrogen transmission pipe union relates to liquid nitrogen transmission pipe union technical field. The utility model discloses a loose joint female joint, connection lock are female and loose joint male joint. The utility model discloses an adopted labyrinth room temperature pipe extension structure, the necessary length of room temperature pipe has been guaranteed, nevertheless reduced the length that connects the part room temperature pipe of pegging graft effectively, make loose joint overall dimension reduce by a wide margin, thereby under the condition that the assurance structure heat leakage reduces, the length of room temperature extension pipe has also been guaranteed, this scheme adopts the stainless steel as connecting the pipeline material, according to the very poor characteristic of stainless steel thermal conductivity, adopt the stainless steel pipe to do the isolation, the structure heat leakage has been reduced, this patent structure is structurally with this section room temperature pipe intussusception in a concentric garden simultaneously, the length of total room temperature extension pipe has been guaranteed, make negative and positive joint with this structure, the external dimension of joint ground has been shortened effectively, furthest has also guaranteed simultaneously and has reduced the structure heat conduction.
Description
Technical Field
The utility model relates to a liquid nitrogen transmission pipe union technical field, concretely relates to labyrinth liquid nitrogen transmission pipe union.
Background
Vacuum cryogenic liquid transfer lines must be used during the transfer of liquid nitrogen, and in certain applications it is inevitable to use two or more sections of tubing to join them together, thus requiring a union to join them together.
Because the requirement of liquid nitrogen transmission on structure heat leakage is very high, a relatively long and very thin room temperature extension pipe is usually needed to ensure that the structure heat leakage is as small as possible, so that the transmission efficiency of the liquid nitrogen is improved.
Therefore, a labyrinth type liquid nitrogen transmission pipe movable joint is proposed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the requirement of heat leakage to the structure is very high for solving the transmission liquid nitrogen, need have longer and very thin room temperature extension pipe to guarantee the problem that the structure of as far as possible leaks heat, the utility model provides a labyrinth liquid nitrogen transmission pipe union.
The utility model discloses a realize above-mentioned purpose and specifically adopt following technical scheme:
labyrinth liquid nitrogen transmission pipe loose joint, including the female head of loose joint, connect lock mother and loose joint male head, the female head of loose joint and loose joint male head set up through connecting the female fixed connection of lock, the female head of loose joint includes external transmission pipe, female first outer tube, female first vacuum interlayer, female first lock mother and female first room temperature extension pipe, female first lock mother is installed to the bottom welding of female first outer tube, the positive department welding in top of female first outer tube installs external transmission pipe, the positive department welding in inboard top of female first outer tube installs female first room temperature extension pipe, female first room temperature extension pipe and external transmission pipe intercommunication set up, female first room temperature extension pipe vertically runs through female first lock mother and extends to the bottom outside of female first lock mother, female first room temperature extension pipe is located the inside lateral wall of female first outer tube one section and forms a set of female first vacuum interlayer with the inside wall of female first outer tube, known from the above-mentioned, when liquid nitrogen gets into the female head of loose joint, the length of female first room temperature extension pipe of this moment can effectual assurance structure leak heat and reduce, female first vacuum interlayer carries out its heat preservation processing simultaneously, thereby avoid liquid nitrogen conduction effect to appear the difference in the conduction change.
Furthermore, the loose joint female joint, the connecting locking nut and the loose joint male joint are all made of stainless steel materials, and the cold end to the room temperature end are usually isolated by a thin-wall stainless steel pipe with a certain length due to poor heat conduction performance of the stainless steel, so that heat leakage of the structure is reduced.
Furthermore, the loose joint male joint comprises a male joint lock nut, a plug cavity, a male joint vacuum interlayer, a male joint outer pipe, a loose joint room temperature labyrinth type extension pipe and a loose joint transmission liquid nitrogen inner pipe, wherein the diameters of the male joint outer pipe and the female joint outer pipe are the same, the top of the male joint outer pipe is welded with the male joint lock nut which is matched with the female joint lock nut, an auxiliary pipe is welded at the center of the top of the inner side of the male joint outer pipe, the outer side wall of the auxiliary pipe and the inner side wall of the male joint outer pipe form a set of male joint vacuum interlayer, the inner sleeve of the auxiliary pipe is provided with the loose joint room temperature labyrinth type extension pipe, the diameter of the loose joint room temperature labyrinth type extension pipe is smaller than that of the auxiliary pipe, the bottom of the loose joint room temperature labyrinth type extension pipe is welded and connected with the bottom end of the auxiliary pipe, the top of the loose joint room temperature labyrinth type extension pipe longitudinally penetrates through the male joint lock nut and extends to the outer side of the top of the male joint lock nut, the top of the loose joint room temperature labyrinth type extension pipe is welded with the loose joint room temperature labyrinth type extension pipe, and the length of the loose joint labyrinth type extension pipe is reduced effectively, and the length of the loose joint insertion pipe is ensured under the condition of room temperature, and the room temperature.
Further, the lateral wall of first room temperature labyrinth extension pipe of living forms a set of grafting chamber with the inside wall of auxiliary tube, the top and the outside intercommunication setting in grafting chamber, grafting chamber and negative first room temperature extension pipe phase-match, specific theory, the use in this scheme grafting chamber is with room temperature pipe intussuseption structurally in a concentric circle, total room temperature extension pipe's length has been guaranteed, make this structure into the negative and positive joint, the overall dimension that connects has been shortened effectively, furthest has also guaranteed simultaneously and has reduced the structure heat conduction.
Further, the outer diameter of the live-head room temperature labyrinth type extension pipe is the same as that of the female room temperature extension pipe, the length of the live-head room temperature labyrinth type extension pipe is equal to that of the female room temperature extension pipe, and particularly, the room temperature extension pipe with the same length effectively reduces the length of the room temperature pipe of the joint plug-in part while ensuring the necessary length of the room temperature pipe, so that the overall size of the loose joint is greatly reduced, and the heat leakage of the structure is reduced.
The utility model has the advantages as follows:
1. the utility model discloses an adopted labyrinth room temperature pipe extension structure, the necessary length of room temperature pipe has been guaranteed, nevertheless reduced the length that connects part room temperature pipe of pegging graft effectively, make loose joint overall dimension reduce by a wide margin, thereby under the condition that guarantees the structure heat leak and reduce, the length of room temperature extension pipe has also been guaranteed, this scheme adopts the stainless steel as connecting the pipeline material, according to the very poor characteristic of stainless steel thermal conductivity, adopt the stainless steel pipe to do the isolation, the structure heat leak has been reduced, this patent structure is with this section room temperature pipe intussusception structurally in a concentric circle simultaneously, the length of total room temperature extension pipe has been guaranteed, make negative and positive joint with this structure, the overall dimension that connects has been shortened effectively, furthest has also guaranteed simultaneously and has reduced the structure heat conduction.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the loose joint female joint of the present invention;
FIG. 3 is a schematic view of the loose joint male connector of the present invention;
reference numerals are as follows: 1. the female joint is movably connected; 2. connecting a lock nut; 3. the male joint is movably connected; 4. externally connecting a transmission pipe; 5. a female outer tube; 6. a negative room temperature extension tube; 7. a female lock nut; 8. a vacuum interlayer at the female end; 9. a live room temperature labyrinth type extension pipe; 10. a male external tube; 11. a movable head transmits a liquid nitrogen inner pipe; 12. a male vacuum interlayer; 13. a plug-in cavity; 14. locking the male head with a female lock; 15. an auxiliary tube.
Detailed Description
To make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the attached drawings in the embodiments of the present invention are combined to clearly and completely describe the technical solution in the embodiments of the present invention, and obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the directions or positional relationships indicated by the terms "inside", "outside", "upper", and the like are based on the directions or positional relationships shown in the drawings, or the directions or positional relationships that the utility model is conventionally placed when in use, and are only for convenience of describing the utility model and simplifying the description, but not for indicating or implying that the device or element indicated must have a specific direction, be constructed and operated in a specific direction, and therefore, should not be construed as limiting the present invention.
As shown in fig. 1, 2 and 3, the labyrinth type liquid nitrogen transmission pipe union comprises a union female joint 1, a connecting locking nut 2 and a union male joint 3, the union female joint 1 and the union male joint 3 are fixedly connected through the connecting locking nut 2, the union female joint 1 comprises an external transmission pipe 4, a female outer pipe 5, a female vacuum interlayer 8, a female locking nut 7 and a female room temperature extension pipe 6, the female outer pipe 5 is welded and installed with the female locking nut 7 at the bottom, the external transmission pipe 4 is welded and installed at the center of the top of the female outer pipe 5, the female room temperature extension pipe 6 is welded and installed at the center of the top of the inner side of the female outer pipe 5, female first room temperature extension pipe 6 sets up with external transmission pipe 4 intercommunication, female first room temperature extension pipe 6 vertically runs through female first lock mother 7 and extends to the female bottom outside of locking mother 7, female first room temperature extension pipe 6 is located the inside one section lateral wall of female first outer tube 5 and the inside wall of female first outer tube 5 forms a set of female first vacuum interlayer 8, can know by the aforesaid, when liquid nitrogen gets into the union female first 1, the length of female first room temperature extension pipe 6 can effectually guarantee that the structure leaks heat and reduces this moment, female first vacuum interlayer 8 keeps warm to it simultaneously, thereby avoid the liquid nitrogen temperature because the conduction effect the temperature difference change appears.
As shown in fig. 1, 2 and 3; the loose joint female joint 1, the connecting lock nut 2 and the loose joint male joint 3 are all made of stainless steel, and the stainless steel has poor heat conduction performance, so that the cold end and the room temperature end are isolated by a thin-wall stainless steel pipe with a certain length, and the heat leakage of the structure is reduced.
As shown in fig. 1, 2 and 3; the loose joint male joint 3 comprises a male joint lock nut 14, a splicing cavity 13, a male joint vacuum interlayer 12, a male joint outer pipe 10, a loose joint room temperature labyrinth type extension pipe 9 and a loose joint transmission liquid nitrogen inner pipe 11, the diameters of the male joint outer pipe 10 and the female joint outer pipe 5 are the same, the top of the male joint outer pipe 10 is welded with the male joint lock nut 14, the male joint lock nut 14 is matched with the female joint lock nut 7, an auxiliary pipe 15 is welded and installed in the center of the inner top of the male joint outer pipe 10, the outer side wall of the auxiliary pipe 15 and the inner side wall of the male joint outer pipe 10 form a set of male joint vacuum interlayer 12, the inner portion of the auxiliary pipe 15 is sleeved with the loose joint room temperature labyrinth type extension pipe 9, the diameter of the loose joint room temperature labyrinth type extension pipe 9 is smaller than that of the auxiliary pipe 15, the bottom end of the loose joint room temperature labyrinth type extension pipe 9 is welded and connected with the bottom end of the auxiliary pipe 15, the top of the loose joint room temperature labyrinth type extension pipe 9 longitudinally penetrates through the male joint lock nut 14 and extends to the top of the male joint lock nut 14 and greatly, the length of the loose joint room temperature labyrinth type extension pipe is reduced effectively, the length of the loose joint inner pipe is ensured, the length of the loose joint room temperature labyrinth type extension pipe is reduced by the room temperature extension pipe 11, the room temperature extension pipe is effectively, and the room temperature extension pipe is ensured.
As shown in fig. 1, 2 and 3; the lateral wall of first room temperature labyrinth extension pipe 9 that lives forms a set of grafting chamber 13 with the inside wall of auxiliary tube 15, the top and the outside intercommunication setting of grafting chamber 13, grafting chamber 13 and the indoor temperature extension pipe 6 phase-match of negative end, specific theory, this scheme grafting chamber 13's use, be with the room temperature pipe intussusception structurally in a concentric circle, total room temperature extension pipe's length has been guaranteed, make negative and positive joint with this structure, the overall dimension that connects ground has been shortened effectively, furthest has also guaranteed simultaneously and has reduced the structure heat conduction.
As shown in fig. 1, 2 and 3; the outer diameter of the live-head room temperature labyrinth type extension pipe 9 is the same as that of the female room temperature extension pipe 6, the length of the live-head room temperature labyrinth type extension pipe 9 is equal to that of the female room temperature extension pipe 6, and particularly, the room temperature extension pipes with the same length effectively reduce the length of the room temperature pipe of the joint plug-in part while ensuring the necessary length of the room temperature pipe, so that the overall size of the loose joint is greatly reduced, and the heat leakage of the structure is reduced.
Claims (5)
1. Labyrinth liquid nitrogen transmission pipe loose joint, including loose joint female head (1), connect female (2) of lock and loose joint male head (3), its characterized in that, loose joint female head (1) and loose joint male head (3) set up through connecting female (2) fixed connection of lock, loose joint female head (1) is including external transmission pipe (4), female outer tube (5), female vacuum interlayer (8), female lock female (7) and female room temperature extension pipe (6), female lock female (7) are installed in the bottom welding of female outer tube (5), the welding of the positive department in top of female outer tube (5) installs external transmission pipe (4), female room temperature extension pipe (6) are installed in the welding of the positive department in inboard top of female head (5), female room temperature extension pipe (6) and external transmission pipe (4) intercommunication set up, female room temperature extension pipe (6) vertically run through female lock female (7) and extend to the bottom outside of female first lock female (7) of female, female head (6) are located one section of the inside lateral wall of female head (5) of a set of room temperature extension pipe and female outer tube (5) and one section vacuum interlayer inside lateral wall (8).
2. The labyrinth type liquid nitrogen conveying pipe union according to claim 1, wherein the union female joint (1), the connection locking nut (2) and the union male joint (3) are all made of stainless steel.
3. The labyrinth type liquid nitrogen transmission pipe loose joint according to claim 1, characterized in that the loose joint male joint (3) comprises a male lock nut (14), a plug cavity (13), a male vacuum interlayer (12), a male outer pipe (10), a loose joint room temperature labyrinth type extension pipe (9) and a loose joint transmission liquid nitrogen inner pipe (11), the diameter of the male outer pipe (10) is the same as that of the female outer pipe (5), the top of the male outer pipe (10) is welded with the male lock nut (14), the male lock nut (14) is matched with the female lock nut (7), an auxiliary pipe (15) is welded at the center of the top of the inner side of the male outer pipe (10), the outer side wall of the auxiliary pipe (15) and the inner side wall of the male outer pipe (10) form a set of the male vacuum interlayer (12), the loose joint room temperature labyrinth type extension pipe (9) is sleeved inside the auxiliary pipe (15), the diameter of the loose joint room temperature labyrinth type extension pipe (9) is smaller than that of the auxiliary pipe (15), the loose joint room temperature labyrinth type extension pipe (9) is connected with the bottom end of the loose joint room temperature labyrinth type extension pipe (9) and the top of the male lock nut (14) is connected with the top of the loose joint transmission liquid nitrogen inner pipe (11).
4. The labyrinth type liquid nitrogen transmission pipe movable joint as claimed in claim 3, wherein the outer side wall of the labyrinth type extension pipe (9) and the inner side wall of the auxiliary pipe (15) form a group of plug-in cavities (13), the top of the plug-in cavities (13) is communicated with the outside, and the plug-in cavities (13) are matched with the female room temperature extension pipe (6).
5. The labyrinth type liquid nitrogen delivery pipe union according to claim 3, wherein the outside diameter of the live room temperature labyrinth extension pipe (9) is the same as that of the female room temperature extension pipe (6), and the length of the live room temperature labyrinth extension pipe (9) is the same as that of the female room temperature extension pipe (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222215366.3U CN218441195U (en) | 2022-08-23 | 2022-08-23 | Labyrinth type liquid nitrogen transmission pipe movable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222215366.3U CN218441195U (en) | 2022-08-23 | 2022-08-23 | Labyrinth type liquid nitrogen transmission pipe movable joint |
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| Publication Number | Publication Date |
|---|---|
| CN218441195U true CN218441195U (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222215366.3U Active CN218441195U (en) | 2022-08-23 | 2022-08-23 | Labyrinth type liquid nitrogen transmission pipe movable joint |
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| CN (1) | CN218441195U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116734165A (en) * | 2023-07-11 | 2023-09-12 | 北京中科富海低温科技有限公司 | Connecting device and connecting method for connecting cold box and Dewar |
-
2022
- 2022-08-23 CN CN202222215366.3U patent/CN218441195U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116734165A (en) * | 2023-07-11 | 2023-09-12 | 北京中科富海低温科技有限公司 | Connecting device and connecting method for connecting cold box and Dewar |
| CN116734165B (en) * | 2023-07-11 | 2024-01-19 | 北京中科富海低温科技有限公司 | Connecting device and connecting method for connecting cold box and Dewar |
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