CN210441498U - Freight train based on liquid nitrogen or liquid carbon dioxide refrigeration - Google Patents
Freight train based on liquid nitrogen or liquid carbon dioxide refrigeration Download PDFInfo
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- CN210441498U CN210441498U CN201921360645.0U CN201921360645U CN210441498U CN 210441498 U CN210441498 U CN 210441498U CN 201921360645 U CN201921360645 U CN 201921360645U CN 210441498 U CN210441498 U CN 210441498U
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Abstract
The utility model belongs to the field of refrigeration equipment, in particular to a freight train based on liquid nitrogen or liquid carbon dioxide refrigeration, which comprises a train head and a multi-section train body connected with the train head, wherein at least one section of the multi-section train body is fixedly provided with a cold source tank for storing liquid nitrogen or liquid carbon dioxide, and other train bodies are container type fresh-keeping carriages and/or container type freezing carriages; the cold source of the container type fresh-keeping carriage and the container type freezing carriage is liquid nitrogen or liquid carbon dioxide of a cold source tank. The liquid nitrogen refrigerator can refrigerate each carriage through liquid nitrogen, and can realize long-distance preservation and refrigeration transportation of railways.
Description
Technical Field
The utility model belongs to the refrigeration plant field, a concretely designs freight train based on liquid nitrogen or liquid carbon dioxide refrigeration.
Background
The applicant Guangzhou union logistics Limited company filed 2016 and reported a utility model patent ZL201621224617.2, which discloses a zero oil consumption electroless container refrigeration fresh-keeping vehicle, used in the technical field of food storage devices, comprising a vehicle carrier and a container arranged on the vehicle carrier through a skid-mounted bottom support, wherein a refrigerating chamber and a nitrogen storage chamber are arranged in the container, the refrigerating chamber is arranged at the rear side of the nitrogen storage chamber, a cabin door is arranged at the rear end of the container in the refrigerating chamber, the container is formed by adopting a heat insulation plate, the heat insulation plate comprises an outer shell, an inner shell and a heat insulation layer which is arranged between the outer shell and the inner shell and is generated by foam, a vacuum heat insulation plate is arranged in the heat insulation layer, a plurality of layers of radiation screens which are parallel to the wall of the inner shell and the outer shell are arranged in the vacuum heat insulation plate, a liquid nitrogen tank is arranged in the nitrogen, the nitrogen conveying pipe is provided with a plurality of liquid nitrogen nozzles in the refrigerating chamber.
The scheme adopts liquid nitrogen refrigeration as a cold source for automobile transportation.
However, no vehicle for liquid nitrogen refrigerated transport aboard a train has been found in the art.
With increasingly busy international trade, the transportation demand for fresh and frozen products is increasing. In the prior art, cross-border and cross-provincial transportation can be carried out only by a refrigeration fresh-keeping vehicle, and the transportation cost is high.
Particularly, as freight transportation on the Eurasian railway is gradually improved, transportation of fresh and frozen goods on the railway becomes possible.
Therefore, the technical problem to be solved by the present application is: a scheme is provided for railway transportation using fresh, frozen goods.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a freight train based on liquid nitrogen or liquid carbon dioxide refrigeration, it refrigerates each section carriage through the liquid nitrogen, can realize the long distance fresh-keeping and the frozen transport of railway.
In order to achieve the above object, the utility model provides a following technical scheme:
a freight train based on refrigeration of liquid nitrogen or liquid carbon dioxide comprises a locomotive and a plurality of sections of train bodies connected with the locomotive, wherein at least one of the plurality of sections of train bodies is fixed with a cold source tank for storing the liquid nitrogen or the liquid carbon dioxide, and other train bodies are container type fresh-keeping carriages and/or container type freezing carriages; the cold source of the container type fresh-keeping carriage and the container type freezing carriage is liquid nitrogen or liquid carbon dioxide of a cold source tank.
In the freight train based on liquid nitrogen refrigeration, heat exchangers for exchanging heat with the corresponding container type fresh-keeping carriage and the corresponding container type freezing carriage are arranged in the container type fresh-keeping carriage and the container type freezing carriage; and the pipeline of the heat exchanger is connected with the cold source tank through a pipeline.
In the freight train based on liquid nitrogen refrigeration, the end of the pipe of the heat exchanger is connected to the atmosphere.
In the freight train based on liquid nitrogen refrigeration, the tail end of the pipeline of the heat exchanger of the container type freshness retaining carriage is connected with the atmosphere and the inside of the container type freshness retaining carriage.
In the freight train based on liquid nitrogen refrigeration, the box body of the container type fresh-keeping carriage and the box body of the container type freezing carriage are both provided with heat insulation layers.
In the freight train based on liquid nitrogen refrigeration, temperature sensors are arranged in the container type fresh-keeping carriage and the container type freezing carriage; an oxygen detection sensor is also arranged in the container type fresh-keeping carriage.
In the freight train based on liquid nitrogen refrigeration, the pipelines comprise main pipelines with heat insulation layers, connecting hoses and branch pipelines, the main pipelines are arranged on the container type fresh-keeping carriage and the container type freezing carriage, the adjacent main pipelines are connected through the connecting hoses, one end of each branch pipeline is connected to the main pipeline, and the other end of each branch pipeline is connected to an inlet of the heat exchanger; the main pipeline adjacent to the cold source tank is connected with the outlet of the cold source tank through a connecting hose.
In the freight train based on liquid nitrogen refrigeration described above, the cold source tank is provided on the most middle car among all cars.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses a cold source jar is other automobile bodies cooling, and other automobile bodies are container formula carriage, can realize that quick shipment, the cold source of goods are connected to can long distance transportation. For ultra-long distance transportation, the cold source tank can be supplemented with cold energy or replaced with the cold source tank.
The utility model discloses a railway is given birth to the bright frozen goods transportation and is proposed a new solution.
Drawings
Fig. 1 is a schematic structural diagram of embodiment 1 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example 1
Referring to fig. 1, a freight train based on liquid nitrogen or liquid carbon dioxide refrigeration comprises a train head 1 and a plurality of sections of train bodies 2 connected with the train head 1, wherein at least one of the plurality of sections of train bodies 2 is fixed with a cold source tank 3 for storing liquid nitrogen or liquid carbon dioxide, and other train bodies 2 are container type fresh-keeping carriages 4 and/or container type freezing carriages 5; the cold sources of the container type fresh-keeping carriage 4 and the container type freezing carriage 5 are liquid nitrogen or liquid carbon dioxide of the cold source tank 3.
During transportation, loading can be carried out in two ways, namely: the container type fresh-keeping carriage 4 and/or the container type freezing carriage 5 are/is butted with the vehicle head 1 in advance, then goods are loaded into the container type fresh-keeping carriage 4 and/or the container type freezing carriage 5, and then the cold source tank 3 is started for cooling.
And secondly, goods are loaded in the container type fresh-keeping carriage 4 and/or the container type freezing carriage 5 in advance, and then the container type fresh-keeping carriage 4 and/or the container type freezing carriage 5 are lifted to a vehicle plate through a crane to form a carriage with one section. And then the cold source tank 3 is communicated for cooling.
In the running process of the train, the number of the cold source tanks 3 is reasonably arranged according to the distance of the transportation distance.
Preferably, heat exchangers 6 for exchanging heat with the corresponding container type fresh-keeping carriage 4 and the corresponding container type freezing carriage 5 are arranged in the container type fresh-keeping carriage 4 and the container type freezing carriage 5; the pipeline of the heat exchanger 6 is connected with the cold source tank 3 through a pipeline, and the tail end of the pipeline of the heat exchanger 6 is connected with the atmosphere. The heat exchanger 6 may be of a wide variety, such as a coil, a plate heat exchanger 6, etc. Generally speaking, the coil is preferred, and the end of the coil is provided with a vent valve 10, when the liquid cold source in the coil exchanges heat to become gas, the gas pressure reaches a certain value, and the vent valve 10 intermittently starts venting.
Preferably, the end of the pipeline of the heat exchanger 6 of the container type fresh-keeping compartment 4 is connected with the atmosphere and the inside of the container type fresh-keeping compartment 4. Because the fresh-keeping compartment is preferably isolated from oxygen, nitrogen or carbon dioxide is continuously or intermittently introduced into the compartment to reduce respiration and bacterial growth.
Generally, the temperature of the container type fresh-keeping compartment 4 is controlled at 4-8 ℃, and the temperature of the container type freezing compartment 5 is controlled at-30 to-4 ℃.
In this embodiment, the container body of the container type fresh-keeping compartment 4 and the container body of the container type freezing compartment 5 are both provided with heat insulating layers. The heat-insulating layer is preferably heat-insulating cotton. However, other means of thermal insulation in the art are also optional, such as vacuum interlayers and the like.
As a further refinement of the embodiment, temperature sensors 7 are arranged in the container type fresh-keeping carriage 4 and the container type freezing carriage 5; an oxygen detection sensor 8 is also arranged in the container type fresh-keeping carriage 4. More preferably, the train is further provided with a server, the temperature sensor 7 and the oxygen detection sensor 8 both transmit data to the server, a liquid inlet valve 9 is arranged at the inlet of the heat exchanger 6, and the server controls the opening degree of the liquid inlet valve 9 and the emptying valve 10 according to the data of the sensors so as to control the temperature in the train compartment.
Preferably, in order to increase the speed of assembling each compartment into a train, the pipeline comprises a main pipeline 11 with an insulating layer, a connecting hose 12 and a branch pipeline 13, the main pipelines 11 are arranged on the container type fresh-keeping compartment 4 and the container type freezing compartment 5, the adjacent main pipelines 11 are connected through the connecting hose 12, one end of the branch pipeline 13 is connected to the main pipeline 11, and the other end of the branch pipeline 13 is connected to the inlet of the heat exchanger 6; the main pipe 11 adjacent to the cold source tank 3 is connected to the outlet of the cold source tank 3 through a connection hose 12. The above-mentioned liquid inlet valve 9 can also be optionally arranged on the branch pipe 13. The main pipeline 11 is generally fixed on the container type fresh-keeping carriage 4 and the container type freezing carriage 5, any carriage is combined, and only the main pipeline 11 needs to be connected through the connecting hose 12.
Preferably, the cold source tank 3 is disposed on the most middle compartment among all compartments.
It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A freight train based on refrigeration of liquid nitrogen or liquid carbon dioxide comprises a locomotive and a plurality of sections of train bodies connected with the locomotive, and is characterized in that at least one of the plurality of sections of train bodies is fixed with a cold source tank for storing the liquid nitrogen or the liquid carbon dioxide, and other train bodies are container type fresh-keeping carriages and/or container type freezing carriages; the cold source of the container type fresh-keeping carriage and the container type freezing carriage is liquid nitrogen or liquid carbon dioxide of a cold source tank.
2. The freight train based on refrigeration by liquid nitrogen or liquid carbon dioxide according to claim 1, wherein heat exchangers for exchanging heat with the corresponding container type fresh-keeping compartment and container type freezing compartment are arranged in the container type fresh-keeping compartment and the container type freezing compartment; and the pipeline of the heat exchanger is connected with the cold source tank through a pipeline.
3. Freight train based on refrigeration by liquid nitrogen or liquid carbon dioxide according to claim 2, characterized in that the ends of the pipes of the heat exchanger are connected to the atmosphere.
4. The liquid nitrogen or liquid carbon dioxide refrigeration based freight train of claim 2, wherein the ends of the pipes of the heat exchanger of the container-type crisper wagon are connected to the atmosphere and to the interior of the container-type crisper wagon.
5. The freight train based on refrigeration by liquid nitrogen or liquid carbon dioxide as claimed in claim 1, wherein the container-type freshness wagon body and the container-type freezing wagon body are provided with insulating layers.
6. The freight train based on refrigeration by liquid nitrogen or liquid carbon dioxide according to claim 1, wherein temperature sensors are arranged in the container type freshness carriage and the container type freezing carriage; an oxygen detection sensor is also arranged in the container type fresh-keeping carriage.
7. The freight train based on refrigeration by liquid nitrogen or liquid carbon dioxide according to claim 2, wherein the pipelines comprise a main pipeline with an insulating layer, a connecting hose and a branch pipeline, the main pipelines are arranged on the container type freshness keeping compartment and the container type freezing compartment, the adjacent main pipelines are connected through the connecting hose, one end of the branch pipeline is connected to the main pipeline, and the other end of the branch pipeline is connected to the inlet of the heat exchanger; the main pipeline adjacent to the cold source tank is connected with the outlet of the cold source tank through a connecting hose.
8. The liquid nitrogen or liquid carbon dioxide refrigeration based cargo train of claim 2, wherein the cold source tank is disposed on a most intermediate car of all cars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921360645.0U CN210441498U (en) | 2019-08-20 | 2019-08-20 | Freight train based on liquid nitrogen or liquid carbon dioxide refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921360645.0U CN210441498U (en) | 2019-08-20 | 2019-08-20 | Freight train based on liquid nitrogen or liquid carbon dioxide refrigeration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210441498U true CN210441498U (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921360645.0U Active CN210441498U (en) | 2019-08-20 | 2019-08-20 | Freight train based on liquid nitrogen or liquid carbon dioxide refrigeration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210441498U (en) |
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2019
- 2019-08-20 CN CN201921360645.0U patent/CN210441498U/en active Active
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