CN210792959U - LNG cold chain transport vechicle of many cold sources - Google Patents
LNG cold chain transport vechicle of many cold sources Download PDFInfo
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- CN210792959U CN210792959U CN201921836352.5U CN201921836352U CN210792959U CN 210792959 U CN210792959 U CN 210792959U CN 201921836352 U CN201921836352 U CN 201921836352U CN 210792959 U CN210792959 U CN 210792959U
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Abstract
The utility model belongs to cold chain transportation field, it discloses LNG cold chain transport vechicle of many cold sources, including automobile body, the box of setting on the automobile body, it is used for the LNG jar to supply natural gas fuel to the engine to carry on the automobile body, be equipped with the heat exchanger in the box, the cold source of heat exchanger derives from the natural gas in the LNG jar, be equipped with a plurality of holding bodies and/or a plurality of cold-storage plates that are used for loading dry ice grain or dry ice board on the wall of box. This cold chain transport vechicle has combined dry ice and/or cold-storage board and has used LNG as the cooling mode of cold source, and the advantage of this kind of refrigeration mode lies in, need not additionally to make other gas storage tank, carries out suitable transformation on the carriage of the vehicle that traditional LNG is the cold source can. In the normal driving process, LNG is mainly used as a cold source for refrigeration, low temperature is maintained in the box body, the volatilization speed of dry ice is reduced, or the low temperature of the cold storage plate is maintained continuously, so that when the vehicle is stopped, the cold source is enough to maintain the temperature.
Description
Technical Field
The invention relates to the field of cold chain transportation, in particular to an LNG cold chain transport vehicle with multiple cold sources.
Background
The inventor of the invention provides an invention patent application CN201910314852.0 in 2019 by hangzhou ziming cold chain science and technology limited liability company, and discloses a cold energy recycling system for an LNG cold chain logistics vehicle, which comprises: the system comprises an LNG liquid storage tank, a stop valve, a vacuum tube, a first three-way valve, a secondary refrigerant heat exchanger 4, a second three-way valve, a fan coil, a first temperature sensor 8, a third three-way valve, a cold storage tank, a temperature controller, a circulating pump, a second temperature sensor 8, an engine cooling water heat exchanger 4, a pressure regulating valve, a buffer tank and an automobile engine; utilize the cold volume that LNG vaporization produced, refrigerate the cooling to refrigerator van, cold volume recycle has replaced carriage refrigerating unit originally, has practiced thrift the energy, and the actual use condition is fully considered simultaneously, realizes multiple mode, satisfies different operating condition, has very important effect in cold chain logistics field.
The specification states: in the parking mode, the engine of the automobile stops working, and the temperature of the carriage is maintained by the cold energy stored in the cold storage tank. At the moment, the branch of the second three-way valve fan coil is opened, the bypass branch is closed, the branch of the third three-way valve cold storage tank is opened, the bypass branch is closed, and the circulating pump conveys the secondary refrigerant with lower temperature in the cold storage tank to the fan coil to maintain the temperature in the carriage.
Therefore, the proposal must be provided with a cold storage tank.
The refrigeration problem of purely using LNG refrigeration during long stops is to be solved.
The applicant has previously proposed a patent application for combined refrigeration by using liquid nitrogen and LNG, which is based on complementary refrigeration by using liquid nitrogen and LNG, and can solve the above problems, but the problems exist in that: the liquid nitrogen tank needs to be additionally mounted, and the number of the gas tanks of the whole vehicle is too large due to the LNG tank 3.
The technical problem to be solved by the present application is that: how to carry out more reasonable and ingenious combined refrigeration.
Disclosure of Invention
The invention aims to provide a multi-cold-source LNG cold chain transport vehicle, which combines a dry ice and/or a cold storage plate and a cold supply mode using LNG as a cold source, wherein the refrigeration mode has the advantage that other gas storage tanks do not need to be additionally manufactured, and the vehicle cabin of the conventional vehicle using LNG as the cold source can be properly modified. In the normal driving process, LNG is mainly used as a cold source for refrigeration, low temperature is maintained in the box body, the volatilization speed of dry ice is reduced, or the low temperature of the cold storage plate is maintained continuously, so that when the vehicle is stopped, the cold source is enough to maintain the temperature.
Even if the dry ice volatilizes in the long-distance transportation process, the purpose of maintaining the parking cold quantity can be realized only by supplementing the dry ice into the accommodating body at the set dry ice supplementing point during parking. The operation is much simpler compared to the liquid nitrogen replenishment procedure of liquid nitrogen cooling.
In addition, in market research, the price difference of the north and south dry ice is large, and the price of the dry ice is lower towards the north, which is also a commercial consideration provided by the scheme.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a LNG cold chain transport vechicle of many cold sources, includes the automobile body, sets up the box on the automobile body, it has the LNG jar that is used for supplying natural gas fuel to the engine to carry on the automobile body, be equipped with the heat exchanger in the box, the cold source of heat exchanger derives from the natural gas in the LNG jar, be equipped with a plurality of containing bodies and/or a plurality of cold-storage plates that are used for loading dry ice grain or dry ice board on the wall of box.
The LNG cold chain transport vehicle with the multiple cold sources further comprises a heat exchanger, wherein the heat exchanger is used for refrigerating a refrigerant in the heat exchanger; the inlet of the heat exchanger is communicated with the outlet of the LNG tank; the outlet of the heat exchanger is in communication with the inlet of the engine.
In the LNG cold chain transport vehicle with the multiple cold sources, an inlet of the heat exchanger is communicated with an outlet of the LNG tank, and an outlet of the heat exchanger is communicated with an inlet of the engine.
The LNG cold chain transport vehicle with the multiple cold sources further comprises an auxiliary heat exchanger, the auxiliary heat exchanger is used for exchanging heat with the atmosphere or tail gas of an engine, an inlet of the auxiliary heat exchanger is communicated with an outlet of the LNG tank, and an outlet of the auxiliary heat exchanger is communicated with an inlet of the engine.
In the LNG cold chain transport vehicle with multiple cold sources, the accommodating body is hinged to the wall of the box body or detachably connected to the wall of the box body.
In the above-described multi-cold-source LNG cold chain carrier, the cold storage plate is detachably mounted to a wall of the tank.
In the LNG cold chain transport vechicle of foretell many cold sources, be equipped with temperature sensor 8, pressure sensor in the box, set up the atmospheric blow-down valve that switches on the box, the blow-down valve links with pressure sensor.
In the LNG cold chain transport vehicle with the multiple cold sources, the wall of the box body is provided with the heat preservation layer, the accommodating body and the cold storage plate are embedded into the heat preservation layer and are in contact with the inner space of the box body, and the heat exchanger is also arranged into the heat preservation layer and is in contact with the inner space of the box body.
In the LNG cold chain transport vehicle with the multiple cold sources, the box body is a box body with the size of a standard container.
Compared with the prior art, the invention has the beneficial effects that:
the utility model discloses a cold chain transport vechicle has combined dry ice or cold-storage board and has used LNG as the cooling mode of cold source, and the advantage of this kind of refrigeration mode lies in, need not additionally to make other gas storage tanks, carries out on traditional LNG as the carriage of the vehicle of cold source suitably transform can. In the normal driving process, LNG is mainly used as a cold source for refrigeration, low temperature is maintained in the box body, the volatilization speed of dry ice is reduced, or the low temperature of the cold storage plate is maintained continuously, so that when the vehicle is stopped, the cold source is enough to maintain the temperature.
Even if the dry ice volatilizes in the long-distance transportation process, the purpose of maintaining the parking cold quantity can be realized only by supplementing the dry ice into the accommodating body at the set dry ice supplementing point during parking. The operation is much simpler compared to the liquid nitrogen replenishment procedure of liquid nitrogen cooling.
In addition, in market research, the price difference of the north and south dry ice is large, and the price of the dry ice is lower towards the north, which is also a commercial consideration provided by the scheme.
Drawings
FIG. 1 is a front view of embodiment 1 of the present invention;
FIG. 2 is a block diagram showing the structure of embodiment 1 of the present invention;
FIG. 3 is a front view of a side wall of a case of embodiment 1 of the present invention;
fig. 4 is a sectional view B-B of fig. 3 of embodiment 1 of the present invention;
FIG. 5 is a plan view of the containing body and the wall of the case in accordance with embodiment 1 of the present invention;
FIG. 6 is a plan view of a containing body according to embodiment 1 of the present invention;
fig. 7 is an enlarged view of a portion a of fig. 5 of embodiment 1 of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1-7, the multiple cold source LNG cold chain carrier includes a vehicle body 1, a vehicle head 9, and a tank 2 disposed on the vehicle body 1, wherein an LNG tank 3 for supplying natural gas fuel to an engine is mounted on the vehicle body 1, a heat exchanger 4 is disposed in the tank 2, a cold source of the heat exchanger 4 is derived from natural gas in the LNG tank 3, a plurality of accommodating bodies 5 for accommodating dry ice particles or dry ice plates and a plurality of cold storage plates 6 are disposed on a wall of the tank 2, and preferably, the accommodating bodies 5 and the cold storage plates 6 are alternately disposed.
When the vehicle is started and normally runs, the natural gas in the LNG tank 3 is mainly used for heating and gasifying to absorb heat, the dry ice and the cold storage plate 6 in the containing body 5 are used for assisting in refrigeration, and when the vehicle stops and the LNG tank 3 stops cooling, the dry ice and the cold storage plate 6 in the containing body 5 are used as main cold sources for cooling.
During long-distance transportation, if the dry ice is consumed midway, the dry ice should be replenished at a set place, the dry ice replenishing operation flow is simple, and the plate-shaped or granular dry ice is directly filled into the accommodating body 5.
Alternatively, a plurality of receiving bodies 5 for receiving dry ice particles or dry ice plates may be separately provided on the wall of the box body 2, or a plurality of cold storage plates 6 may be separately provided.
The cold accumulation plate 6 is a refrigeration device commonly used in the field, and the cold accumulation agent in the cold accumulation plate 6 is 0# cold accumulation agent, 1# cold accumulation agent, 2# cold accumulation agent, 3# cold accumulation agent or 4# cold accumulation agent; the use temperature range of the 0# cold-storage agent is-40 to-18 ℃, and the use temperature range of the 1# cold-storage agent is-18 to-12 ℃; the use temperature range of the No. 2 cold-storage agent is-12 to-6 ℃; the use temperature range of the No. 3 cold-storage agent is-6-0 ℃; the use temperature range of the No. 4 coolant is 2-8 ℃.
The appropriate cold accumulation plate 6 can be selected according to the requirement.
The cold accumulation plate 6 plays an important role in maintaining the temperature in the box body 2 to be stable, particularly the temperature is fluctuated violently in the process of midway replenishment and unloading, the cold accumulation plate 6 can replenish cold loss at this time, the gasification speed of the dry ice can be reduced, in the transportation process, the cold accumulation and the slow cold absorption are carried out, and the temperature balance in the box body 2 in the normal transportation process is maintained.
Two specific modes can be referred to for cooling with LNG, mode one: the natural gas does not directly exchange heat with the box body 2, and particularly, the natural gas refrigeration system further comprises a heat exchanger, wherein the heat exchanger is used for refrigerating a refrigerant in the heat exchanger 4; the inlet of the heat exchanger is communicated with the outlet of the LNG tank 3; the outlet of the heat exchanger is in communication with the inlet of the engine. In this case, the natural gas enters the heat exchanger to exchange heat with the refrigerant in the heat exchanger 4, and in this case, the gasification temperature of the refrigerant in the heat exchanger 4 should be reasonably selected, for example, the temperature in the tank 2 is 5 ℃, and the gasification temperature of the refrigerant should be selected to be 2-3 ℃, so that the gasified gas can be liquefied and refrigerated in the heat exchanger 4 through heat exchange by the heat exchanger, and flows back to exchange heat with the tank 2.
Mode two, the natural gas directly carries out the heat transfer with box 2, promptly: the inlet of the heat exchanger 4 is communicated with the outlet of the LNG tank 3, and the outlet of the heat exchanger 4 is communicated with the inlet of the engine. The inlet of the heat exchanger 4 is provided with a feed valve 41 and the outlet thereof is provided with a discharge valve 42.
The present embodiment selects mode two.
Preferably, the system further comprises an auxiliary heat exchanger 7, wherein the auxiliary heat exchanger 7 is used for exchanging heat with the atmosphere or engine exhaust, an inlet of the auxiliary heat exchanger 7 is communicated with an outlet of the LNG tank 3, and an outlet of the auxiliary heat exchanger 7 is communicated with an inlet of an engine. The auxiliary heat exchanger 7 is mainly used for releasing cold energy of LNG too much, and the auxiliary heat exchanger 7 releases the cold energy to avoid over-low temperature of the box body 2.
In the present embodiment, the accommodating body 5 and the cold storage plate 6 are detachably attached to the wall of the case 2.
The detachable mode of the present disclosure can be referred to
"principles and techniques of snap connection" as described in "https:// wenku. baidu. com/view/8461e117f18583d049645959. html", page 2, fig. 2.16, in PPT, (a) detachable non-permanent locks, and page 10, fig. 2.28, in various implementations of the assembly movement. It describes a variety of non-permanent locking snap-fit means, which is a very convenient releasable attachment.
Other detachable ways are, for example, plugging, that is, a fixed cavity is designed on the wall of the box body 2, and the cold storage plate 6 is plugged in the fixed cavity. The fixing cavity can be referred to the subsequent design of the receiving body 5.
Other detachable means are, for example, adsorption based on magnetism, specifically, a magnet may be provided on the wall of the box body 2, and the cold storage plate 6 may be fixed by adsorption through the magnet, but this embodiment is not applicable if the cold storage plate 6 is a polymer housing.
The connection between the receiving body 5 and the casing 2 is preferably a snap connection. If for the joint, four angles of preferred accommodate body 5 set up joint spare, set up on the wall of box 2 with joint spare complex joint fitting piece. Still another connection mode is articulated, and the condition of adopting articulated is: the bottom or the left side or the right side of the accommodating body 5 is hinged with the wall of the box body 2, and meanwhile, the accommodating body 5 and the side opposite to the hinged side are connected to the wall of the box body 2 in a detachable clamping manner, a bolt connection manner and the like.
The following describes a clamping manner of the accommodating body 5 and the box body 2 specifically, a plurality of through holes 51 are arranged on the accommodating body 5, a clamping piece penetrating through the through holes 51 is arranged on the accommodating body 5, and a clamping matching piece is arranged on the wall of the box body 2; the clamping piece is a bolt 52, a salient point 53 is arranged on the bolt 52, the bolt 52 is inserted into the through hole 51, the bolt 52 is matched with the through hole 51 in a mode of rotating around the axis of the bolt 52, and the bolt 52 is relatively fixed in the axial direction and relatively rotatable in the radial direction. The bolt 52 is provided with a snap ring 54 for limiting the axial relative movement of the bolt 52 and the through hole 51, and one end of the bolt 52 is provided with a knob which is in inserted fit with the accommodating body 5.
The snap fit is a latch post 55 into which the latch 52 is inserted, the latch post 55 being provided with an L-shaped slot 58, the L-shaped slot 58 extending to the end of the latch post 55. When joint spare and joint fitting piece grafting cooperation, during the bolt 52 inserted the bolt post 55, when the bolt 52 advanced along the well kenozooecium of bolt post 55, with the groove with wide or be narrower than the bump 53 in groove can follow groove 58 and move ahead, when reaching the corner in groove 58, rotatory bolt 52 makes bump 53 block go into the corner of groove 58, reaches the purpose that joint spare and joint fitting piece mutual joint are connected. The containing body 5 is also provided with air vents 56 cooperating with a containing space 57 containing dry ice inside.
When unlocked, reverse rotation of latch 52 unlocks.
Preferably, be equipped with temperature sensor 8, pressure sensor 10 in the box 2, set up the atmospheric conduction's on box 2 atmospheric vent valve 11, vent valve 11 and pressure sensor 10 linkage, be equipped with heat preservation 12 on the wall of box 2, accommodate body 5, cold-storage plate 6 embedding in heat preservation 12 and with box 2 inner space contact, heat exchanger 4 also puts into heat preservation 12 and with box 2 inner space contact.
More specifically, the vehicle body 1 is further equipped with a controller 13, and the controller 13 receives data from the temperature sensor 8 and the pressure sensor 10 and controls the discharge of the air release valve 11, the intake valve 41, and the discharge valve 42.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. 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 (9)
1. The LNG cold chain transport vehicle with the multiple cold sources comprises a vehicle body and a box body arranged on the vehicle body, and is characterized in that an LNG tank used for supplying natural gas fuel to an engine is mounted on the vehicle body, a heat exchanger is arranged in the box body, the cold sources of the heat exchanger are derived from natural gas in the LNG tank, and a plurality of accommodating bodies and/or a plurality of cold storage plates used for accommodating dry ice particles or dry ice plates are arranged on the wall of the box body.
2. The LNG cold chain transport vehicle with multiple cold sources as claimed in claim 1, further comprising a heat exchanger for refrigerating a refrigerant in the heat exchanger; the inlet of the heat exchanger is communicated with the outlet of the LNG tank; the outlet of the heat exchanger is in communication with the inlet of the engine.
3. The multi-cold-source LNG cold chain carrier vehicle as claimed in claim 1, wherein the inlet of the heat exchanger is communicated with the outlet of the LNG tank, and the outlet of the heat exchanger is communicated with the inlet of the engine.
4. The LNG cold chain transport vehicle with multiple cold sources as claimed in claim 2 or 3, further comprising an auxiliary heat exchanger, wherein the auxiliary heat exchanger is used for exchanging heat with the atmosphere or engine tail gas, an inlet of the auxiliary heat exchanger is communicated with an outlet of the LNG tank, and an outlet of the auxiliary heat exchanger is communicated with an inlet of the engine.
5. The multi-cold-source LNG cold chain carrier vehicle as claimed in claim 1, wherein the receiving body is hingedly connected to a wall of the tank body or detachably connected to the wall of the tank body.
6. The multi-cold-source LNG cold chain carrier of claim 1, wherein the cold storage plate is detachably mounted to a wall of the tank body.
7. An LNG cold chain transport vehicle with multiple cold sources as claimed in any one of claims 1 to 3, wherein the tank body is internally provided with a temperature sensor, a pressure sensor and an air release valve communicated with the atmosphere and arranged on the tank body, and the air release valve is linked with the pressure sensor.
8. The LNG cold chain transport vehicle with multiple cold sources as claimed in claim 1, wherein the walls of the tank body are provided with heat insulation layers, the accommodating bodies and the cold storage plates are embedded in the heat insulation layers and are in contact with the inner space of the tank body, and the heat exchanger is also embedded in the heat insulation layers and is in contact with the inner space of the tank body.
9. The multi-cold-source LNG cold chain carrier vehicle according to any one of claims 1, 2, 3, 5, 6 and 8, wherein the tank body is a standard container size tank body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921836352.5U CN210792959U (en) | 2019-10-29 | 2019-10-29 | LNG cold chain transport vechicle of many cold sources |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921836352.5U CN210792959U (en) | 2019-10-29 | 2019-10-29 | LNG cold chain transport vechicle of many cold sources |
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| CN210792959U true CN210792959U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114103593A (en) * | 2021-11-30 | 2022-03-01 | 东风商用车有限公司 | Method, device, equipment and system for controlling automobile gas cold quantity |
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2019
- 2019-10-29 CN CN201921836352.5U patent/CN210792959U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114103593A (en) * | 2021-11-30 | 2022-03-01 | 东风商用车有限公司 | Method, device, equipment and system for controlling automobile gas cold quantity |
| CN114103593B (en) * | 2021-11-30 | 2023-05-30 | 东风商用车有限公司 | Method, device, equipment and system for controlling cold energy of automobile fuel gas |
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