CN216868170U - Nitrogen filling system structure in cold box - Google Patents
Nitrogen filling system structure in cold box Download PDFInfo
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- CN216868170U CN216868170U CN202220490862.7U CN202220490862U CN216868170U CN 216868170 U CN216868170 U CN 216868170U CN 202220490862 U CN202220490862 U CN 202220490862U CN 216868170 U CN216868170 U CN 216868170U
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Abstract
The utility model relates to a nitrogen filling system structure in a cold box, which comprises a cold box body, wherein a heat insulating material is filled in the cold box body, a nitrogen filling pipeline assembly is arranged in the cold box body, and a plurality of gas nozzles convenient for releasing nitrogen are arranged on the nitrogen filling pipeline assembly; the nitrogen filling pipeline assembly comprises an introducing pipeline, a bottom pipeline, a long vertical pipeline, a short vertical pipeline and a horizontal pipeline, wherein one end of the introducing pipeline extends out of the cold box body, the other end of the introducing pipeline is communicated with the bottom pipeline, the long vertical pipeline and the short vertical pipeline are perpendicular to the bottom pipeline and are communicated with the bottom pipeline, and the horizontal pipeline is arranged on the long vertical pipeline and is communicated with the long vertical pipeline. The nitrogen filling system has the advantages of simple manufacture, convenient installation, short installation period, simple and beautiful appearance in the cold box body, difficult damage, improvement of the stability and the service life of the nitrogen filling system and the like.
Description
Technical Field
The utility model relates to a nitrogen filling structure, in particular to a nitrogen filling system structure in a cold box, and belongs to the technical field of cold box equipment.
Background
The cold box is a group of high-efficiency, heat-insulating and cold-insulating low-temperature heat exchange equipment, is frequently used in the cryogenic separation process, for example, the cold box which works at about-100 to-196 ℃ is used in the cryogenic separation process of petroleum cracking gas, and consists of a high-efficiency plate heat exchanger with a compact structure, a gas-liquid separator and a tower, and because the low temperature is easy to dissipate cold and extremely strict heat-insulating and cold-insulating requirements are met, the heat exchanger and the separator are packaged in a box-shaped object by using heat-insulating materials, so that the cold box is called.
At present, in a gas separation or liquefaction device, in order to maintain micro-positive pressure in a cold box and prevent moist air from entering the cold box, nitrogen-filled pipelines are generally arranged around the cold box, the upper part of the cold box, the middle part of the cold box and the lower part of the cold box are uniformly arranged at intervals, in order to release nitrogen, small holes are uniformly formed in the vertical pipeline and the horizontal pipeline, so that the nitrogen filling system is prevented from being out of work due to the fact that heat insulation materials (pearlite sand) enter the pipeline from the small holes to block a nitrogen channel, a plurality of layers of glass fiber cloth are tightly wound outside the vertical pipeline and the horizontal pipeline which are provided with the small holes, in order to ensure that the glass fiber cloth can be tightly attached to the pipelines, the glass fiber cloth is bound by copper wires at uniform intervals, but the structure has the disadvantages of complex manufacture, high labor cost and long installation period, and in the process of cold box assembly, the glass fiber cloth is easy to be damaged or loosened due to frequent treading by personnel, so that instability is brought to a nitrogen filling system.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims at the technical problems in the prior art and provides a nitrogen charging system structure in a cold box, which can prevent pearlife from entering a nitrogen charging pipeline assembly to cause failure of a nitrogen charging system due to damage or looseness of glass fiber cloth.
The purpose of the utility model is mainly realized by the following scheme:
a nitrogen filling system structure in a cold box comprises a cold box body, wherein heat insulation materials are filled in the cold box body, a nitrogen filling pipeline assembly is arranged in the cold box body, and a plurality of gas nozzles convenient for releasing nitrogen are arranged on the nitrogen filling pipeline assembly; the nitrogen filling pipeline assembly comprises an introducing pipeline, a bottom pipeline, a long vertical pipeline, a short vertical pipeline and a horizontal pipeline, wherein one end of the introducing pipeline extends out of the cold box body, the other end of the introducing pipeline is communicated with the bottom pipeline, the long vertical pipeline and the short vertical pipeline are perpendicular to the bottom pipeline and are communicated with the bottom pipeline, and the horizontal pipeline is arranged on the long vertical pipeline and is communicated with the long vertical pipeline.
Preferably, the bottom of one side surface of the cold box body is provided with an introduction hole, the introduction pipeline extends out of the cold box body through the introduction hole, and the introduction pipeline is connected with the introduction hole in a sealing manner.
Preferably, the bottom pipeline is of a rectangular structure and is fixedly installed at the bottom in the cold box body, and a circle of pipeline is arranged at the bottom in the cold box body.
Preferably, the short vertical pipelines are provided with at least four short vertical pipelines which are vertically communicated on four sides of the bottom pipeline.
Preferably, the two long vertical pipelines are vertically communicated at the diagonal position of the bottom pipeline.
Preferably, the horizontal pipeline is of an L-shaped structure, and two ends of the horizontal pipeline are respectively communicated with the two long vertical pipelines.
Preferably, the openings of the adjacent horizontal pipes are oppositely arranged, and the lowest horizontal pipe is higher than the uppermost end of the short vertical pipe.
Preferably, the gas nozzle comprises a nozzle seat and a spray head, the nozzle seat and the spray head are both cylindrical, an air cavity is formed in the nozzle seat, the bottom of the nozzle seat is communicated with the nitrogen-filled pipeline assembly in a sealing mode, the top of the nozzle seat is fixedly connected with the bottom of the spray head, and a silencing layer is arranged at the top of the spray head.
Preferably, the outer side wall of the lower end of the spray head is provided with an external thread used for connecting the nozzle holder, and the inner side wall of the upper end of the nozzle holder is provided with an internal thread matched with the external thread.
Preferably, the nozzle holder is made of common carbon steel, and the spray head is made of copper.
Therefore, compared with the prior art, the utility model has the following advantages: simple manufacture, it is very convenient to install, and installation cycle is short, makes this internal more succinct of cold box moreover, and is pleasing to the eye, and is not fragile, has improved the stability and the life of filling nitrogen system.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the gas nozzle in the present invention;
FIG. 3 is a schematic view of the structure of a nozzle holder according to the present invention;
fig. 4 is a schematic structural view of the head of the present invention.
Illustration of the drawings: 1-cold box body, 2-gas nozzle, 3-introduction pipeline, 4-bottom pipeline, 5-long vertical pipeline, 6-short vertical pipeline, 7-horizontal pipeline, 8-introduction hole, 9-nozzle seat, 10-spray head, 11-gas cavity, 12-silence layer, 13-external thread and 14-internal thread.
Detailed Description
The technical solution of the present invention is further specifically described below by way of specific examples in conjunction with the accompanying drawings. It is to be understood that the practice of the utility model is not limited to the following examples, and that any variations and/or modifications may be made thereto without departing from the scope of the utility model.
In the present invention, all parts and percentages are by weight, unless otherwise specified, and the equipment and materials used are commercially available or commonly used in the art. The methods in the following examples are conventional in the art unless otherwise specified. Unless otherwise indicated, the components or devices in the following examples are all common standard components or components known to those skilled in the art, and their structures and principles can be known to those skilled in the art through technical manuals or through routine experimentation.
Example (b):
as shown in fig. 1, the utility model provides a technical scheme of a nitrogen filling system structure in a cold box, which includes a cold box body 1 with a cuboid structure, wherein a heat insulating material (such as pearlite sand) is filled in the cold box body 1, a nitrogen filling pipeline assembly is arranged in the cold box body 1, a plurality of gas nozzles 2 which are convenient for releasing nitrogen are arranged on the nitrogen filling pipeline assembly, the nitrogen filling pipeline assembly is used for inputting nitrogen into the cold box body 1, the nitrogen in the embodiment adopts dry dirty nitrogen or nitrogen, and the gas nozzles 2 can uniformly release the nitrogen into the cold box body 1.
Specifically, the nitrogen charging pipe assembly is composed of an introducing pipe 3, a bottom pipe 4, a long vertical pipe 5, a short vertical pipe 6 and a horizontal pipe 7.
Preferably, the bottom pipeline 4 is of a rectangular structure and is fixedly installed on a frame at the bottom in the cold box body 1 through U-shaped bolts, and a circle of pipes is arranged at the bottom in the cold box body 1.
Preferably, the introducing pipeline 3 is in an L-shaped structure, one end of the introducing pipeline extends out from the bottom of the front side surface of the cold box body 1, the other end of the introducing pipeline 3 is communicated with the bottom pipeline 4, an introducing hole 8 is formed in the bottom of the front side surface of the cold box body 1, the introducing pipeline 3 extends out of the cold box body 1 through the introducing hole 8, and the introducing pipeline 3 and the introducing hole 8 are fixed through sealing welding.
Preferably, short vertical pipeline 6 is equipped with at least four, and communicates perpendicularly on the four sides of bottom pipeline 4, and communicates with each other with bottom pipeline 4, and short vertical pipeline 6 is equipped with eight in this embodiment, and every limit of bottom pipeline 4 all corresponds two short vertical pipelines 6, and short vertical pipeline 6 passes through U type bolt fixed mounting on the frame of cold box body 1 inside portion.
Preferably, two long vertical pipelines 5 are arranged and vertically communicated at the opposite corners of the bottom pipeline 4, the horizontal pipeline 7 is arranged on the long vertical pipelines 5 and communicated with the long vertical pipelines 5, and the long vertical pipelines 5 are fixedly installed on the frame of the inner side part of the cold box body 1 through U-shaped bolts.
Preferably, the horizontal pipeline 7 is in an L-shaped structure, two ends of the horizontal pipeline 7 are respectively communicated with the two long vertical pipelines 5, openings of the upper and lower adjacent horizontal pipelines 7 are oppositely arranged, the lowest horizontal pipeline 7 is higher than the uppermost end of the short vertical pipeline 6, and the horizontal pipeline 7 is fixedly installed on a frame at the inner side part of the cold box body 1 through a U-shaped bolt; the cold box is divided into an upper part, a middle part and a lower part according to the height of the cold box body 1, a short vertical pipeline 6 is positioned at the lower part of the cold box body 1, a long vertical pipeline 5 is positioned at the middle part and the lower part of the cold box body 1, a horizontal pipeline 7 is positioned at the middle part and the upper part of the cold box body 1, gas nozzles 2 are arranged on the short vertical pipeline 6 and the horizontal pipeline 7, and the gas nozzles 2 are arranged on the short vertical pipeline 6 at intervals (about 2 meters) in the height direction of the short vertical pipeline 6 in the embodiment; at least one gas nozzle 2 is installed on each horizontal pipe 7, and one gas nozzle 2 is installed on each side of the horizontal pipe 7 in this embodiment.
Specifically, gas nozzle 2 comprises nozzle holder 9 and shower nozzle 10, and nozzle holder 9 and shower nozzle 10 are cylindricly, and gas cavity 11 has been seted up to the inside of nozzle holder 9, and the bottom of nozzle holder 9 welds with short vertical pipeline 6 and horizontal pipeline 7 trompil, the bottom fixed connection of the top of nozzle holder 9 and shower nozzle 10, and the top of shower nozzle 10 is equipped with silence layer 12.
Preferably, offer the external screw thread 13 that is used for connecting nozzle holder 9 on the shower nozzle 10 lower extreme lateral wall, offer on the 9 upper ends inside wall of nozzle holder with external screw thread 13 complex internal thread 14, silence layer 12 is equipped with a plurality of fumaroles that communicate with shower nozzle 10, adopts porous scattering nitrogen gas, avoids high-speed collision and surges, has reduced the noise, reaches the purpose of amortization.
Preferably, the nozzle holder 9 and the nitrogen charging pipe assembly are both made of common carbon steel, and the spray head 10 is made of copper.
Preferably, in order to facilitate the control and monitoring of the nitrogen filling condition in the cold box body 1, a vent valve and a gas flow monitoring device can be installed on the part of the introducing pipeline 3, which is located outside the cold box body 1, along the gas flowing direction, a nitrogen concentration detector and a gas pressure detector are installed on the upper part, the middle part and the lower part in the cold box body 1, and the gas flow monitoring device, the nitrogen concentration detector and the gas pressure detector are all commonly used instruments and equipment on the market.
According to the nitrogen filling system structure in the cold box, provided by the utility model, nitrogen can be uniformly released into the cold box body through the arranged nitrogen filling pipeline assembly and the gas nozzle arranged on the nitrogen filling pipeline assembly, the micro positive pressure in the cold box body is maintained, and moist air is prevented from entering the cold box body.
It should be understood that this example is only for illustrating the present invention and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the teaching of the present invention, and such equivalents may fall within the scope of the present invention as defined in the appended claims.
Claims (10)
1. The utility model provides an interior nitrogen system structure of filling of cold box, includes cold box body (1), and cold box body (1) intussuseption is filled with heat-insulating material, its characterized in that: a nitrogen filling pipeline assembly is arranged in the cold box body (1), and a plurality of gas nozzles (2) which are convenient for releasing nitrogen are arranged on the nitrogen filling pipeline assembly; fill nitrogen pipe assembly including introducing pipeline (3), bottom pipeline (4), long vertical pipeline (5), short vertical pipeline (6) and horizontal pipeline (7), the cold box body (1) is stretched out to the one end of introducing pipeline (3), and the other end and the bottom pipeline (4) of introducing pipeline (3) communicate with each other, long vertical pipeline (5) and short vertical pipeline (6) all perpendicular to bottom pipeline (4), and communicate with each other with bottom pipeline (4), horizontal pipeline (7) set up on long vertical pipeline (5), and communicate with each other with long vertical pipeline (5).
2. The structure of nitrogen system in cold box as claimed in claim 1, wherein: introducing holes (8) are formed in the bottom of one side face of the cold box body (1), the introducing pipeline (3) stretches out of the cold box body (1) through the introducing holes (8), and the introducing pipeline (3) is connected with the introducing holes (8) in a sealing mode.
3. The structure of a nitrogen-filled system in a cold box according to claim 2, wherein: the bottom pipeline (4) is of a rectangular structure and is fixedly installed at the bottom in the cold box body (1), and a circle of pipeline is arranged at the bottom in the cold box body (1).
4. The structure of nitrogen system in cold box according to claim 3, wherein: the short vertical pipelines (6) are at least four and are vertically communicated with four sides of the bottom pipeline (4).
5. The structure of nitrogen system in cold box according to claim 4, wherein: the two long vertical pipelines (5) are vertically communicated with the diagonal position of the bottom pipeline (4).
6. The structure of nitrogen system in cold box as claimed in claim 5, wherein: the horizontal pipeline (7) is of an L-shaped structure, and two ends of the horizontal pipeline are respectively communicated with the two long vertical pipelines (5).
7. The structure of nitrogen system in cold box according to claim 6, wherein: and the openings of the adjacent horizontal pipelines (7) are oppositely arranged, and the horizontal pipeline (7) at the lowest position is higher than the uppermost end of the short vertical pipeline (6).
8. The structure of nitrogen charging system in cold box according to claim 1, wherein: the gas nozzle (2) comprises a nozzle seat (9) and a sprayer (10), wherein the nozzle seat (9) and the sprayer (10) are both cylindrical, an air cavity (11) is formed in the nozzle seat (9), the bottom of the nozzle seat (9) is communicated with a nitrogen charging pipeline assembly in a sealing mode, the top of the nozzle seat (9) is fixedly connected with the bottom of the sprayer (10), and a silencing layer (12) is arranged at the top of the sprayer (10).
9. The structure of a nitrogen-filled system in a cold box according to claim 8, wherein: and the outer side wall of the lower end of the spray head (10) is provided with an external thread (13) for connecting the nozzle holder (9), and the inner side wall of the upper end of the nozzle holder (9) is provided with an internal thread (14) matched with the external thread (13).
10. The structure of a nitrogen-filled system in a cold box according to claim 9, wherein: the nozzle seat (9) is made of common carbon steel, and the spray head (10) is made of copper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220490862.7U CN216868170U (en) | 2022-03-08 | 2022-03-08 | Nitrogen filling system structure in cold box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220490862.7U CN216868170U (en) | 2022-03-08 | 2022-03-08 | Nitrogen filling system structure in cold box |
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| Publication Number | Publication Date |
|---|---|
| CN216868170U true CN216868170U (en) | 2022-07-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220490862.7U Active CN216868170U (en) | 2022-03-08 | 2022-03-08 | Nitrogen filling system structure in cold box |
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| CN (1) | CN216868170U (en) |
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- 2022-03-08 CN CN202220490862.7U patent/CN216868170U/en active Active
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