CN210083043U

CN210083043U - Multi-temperature-zone LNG cold chain logistics vehicle

Info

Publication number: CN210083043U
Application number: CN201920531916.8U
Authority: CN
Inventors: 俞益波; 张峰; 郑斯璇; 孙方军
Original assignee: Hangzhou Ziming Cold Chain Technology Co Ltd
Current assignee: Hangzhou Ziming Cold Chain Technology Co Ltd
Priority date: 2019-04-18
Filing date: 2019-04-18
Publication date: 2020-02-18
Anticipated expiration: 2029-04-18

Abstract

The patent relates to a multi-temperature-zone LNG cold chain logistics car, include: the LNG storage tank is arranged on the top of the refrigeration carriage, and the heat exchanger is connected with an LNG liquid inlet pipeline and an LNG gas outlet pipeline; the gravity heat pipe condensation section is arranged in the heat exchanger, the evaporation section is distributed in different areas of the refrigerator carriage, and the heat insulation section is arranged in the heat insulation layer of the refrigerator carriage; the interior of the refrigerator compartment is divided into different areas by the partition board, and the number of the heat pipes contained in each area is different, so that the function of the compartment with multiple temperature areas is realized. This patent utilizes the cold volume of LNG vaporization production, carries out refrigeration cooling to refrigerator van, and cold volume recycle has replaced carriage refrigerating unit originally, has practiced thrift the energy, adopts the gravity heat pipe as heat transfer device simultaneously, and is efficient, and the warm area is wide, has very important effect in cold chain commodity circulation field.

Description

Multi-temperature-zone LNG cold chain logistics vehicle

Technical Field

The utility model relates to a cold chain logistics field especially relates to a multi-temperature-zone LNG cold chain logistics car.

Background

The existing cold-chain logistics vehicle in China mainly takes a mechanical refrigerator car as a main part, a refrigerating system of the cold-chain logistics vehicle consists of a compressor, a condenser, an evaporator and an expansion valve, and the power source of the compressor is driven by an automobile engine or an independent diesel engine; the cold-chain logistics vehicle needs an independent refrigerating device, and is complex in structure and high in operating cost.

The fuel of the LNG cold-chain logistics vehicle is liquefied natural gas, and the LNG is stored in a liquid storage tank at-160 ℃. Before entering an automobile engine, LNG must be vaporized and reheated to a normal temperature state, a large amount of cold energy is generated during vaporization of the LNG, and under a normal condition, the temperature in a cold-chain logistics carriage is about-18 ℃, so that the LNG vaporization cold energy is enough to be used for cooling the cold-chain logistics carriage.

Traditional cold chain logistics car often only provides the food preservation scheme of single warm area, and then can not do as for the food that needs to keep in different warm areas to the simultaneous transport, often can appear the goods and adorn the condition in not full carriage, this moment, if can rationally arrange the goods of some other warm areas, then can create extra logistics income.

If can design a multi-temperature-zone carriage to LNG cold chain logistics car, then can not only reduce the running cost of cold chain logistics car, can also help reducing exhaust emissions, reduce the pollution, accord with the urgent demand in current cold chain logistics field.

SUMMERY OF THE UTILITY MODEL

The cold-chain logistics vehicle aims to solve the problems that the traditional cold-chain logistics vehicle only provides a food preservation scheme with a single temperature area, but has no effect on the simultaneous transportation of foods needing to be preserved in different temperature areas, and the situation that a carriage is not full of goods often occurs; this patent has designed a multi-temperature-zone carriage to LNG cold chain logistics car, can not only reduce the running cost of cold chain logistics car, can also help reducing exhaust emissions, and pollution abatement accords with the urgent demand in current cold chain logistics field. The method comprises the following steps:

a multi-temperature-zone LNG cold-chain logistics vehicle comprises: the LNG storage tank is arranged on the refrigerating carriage, the LNG storage tank is arranged on the LNG storage tank, the check valve is arranged on the LNG storage tank, the heat exchanger is arranged on the LNG storage tank, the gravity heat pipe is arranged on the gravity heat pipe, the partition plate is arranged on the LNG storage tank, and the.

The heat exchanger is arranged at the top of the refrigerator carriage and is connected with an LNG liquid inlet pipeline and an LNG gas outlet pipeline. The outer surface of the heat exchanger is wrapped with a heat insulation material, so that heat leakage is reduced. The heat exchanger can also be made into a double-layer structure, and the two layers are vacuumized, so that the heat insulation performance is ensured to the maximum extent.

The gravity heat pipe condensation section is arranged in the heat exchanger, the evaporation section is distributed in different areas of the refrigerator carriage, and the heat insulation section is arranged in the heat insulation layer of the refrigerator carriage. The heat pipe condensation segment directly contacts with LNG, and heat exchange efficiency is high. The evaporation section of the heat pipe can be embedded into the inner wall of the carriage or can be exposed in the carriage. The fan can be added near the heat pipe, which is beneficial to enhancing the uniformity of the temperature distribution in each area.

Preferably, the refrigerator compartment is divided into different areas by partition boards, the number of the heat pipes contained in each area is different, the more the number of the heat pipes is, the larger the refrigerating capacity is, the lower the temperature in the area is, and a multi-temperature-zone compartment is formed.

Preferably, the partition board is positioned in the refrigerator compartment and made of materials with excellent heat insulation performance, the air tightness is good, and air in different temperature areas cannot be communicated.

Preferably, the evaporation sections of the gravity heat pipes can also be uniformly distributed in the carriage, and the partition plate is made into a movable design. The carriage is divided into areas with different volumes by the sliding partition plate, and the number of the heat pipes contained in each area is different, so that the multi-temperature-area and multi-volume functions of the refrigerated carriage can be realized, and the reasonable utilization of the internal space is realized.

Preferably, the check valve functions to prevent the backflow of LNG. The LNG can be conveyed into the heat exchanger from the liquid storage tank by replacing the circulating pump, so that the same function is realized.

Preferably, the inlet of the automobile engine and the air outlet pipeline of the heat exchanger can be additionally provided with a gas-liquid separator, so that unvaporized LNG is prevented from entering the engine and interfering the normal operation of the engine.

The obvious advantages of adopting the technical scheme are as follows:

the cold energy that utilizes LNG vaporization to produce cools off the cold storage carriage, and cold energy recycle has replaced the carriage refrigerating unit originally, has practiced thrift the energy, adopts gravity heat pipe as heat transfer device simultaneously, and is efficient, and the warm area is wide, has very important effect in cold chain commodity circulation field.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a work flow schematic diagram of a multi-temperature-zone LNG cold-chain logistics vehicle.

Description of reference numerals: 1. a refrigerated compartment; 2. an LNG storage tank; 3. a one-way valve; 4. a heat exchanger; 5. a gravity heat pipe; 6. a partition plate; 7. an automotive engine.

Detailed Description

The present invention will be described in further detail with reference to the following examples, which are illustrative of the present invention and are not intended to limit the present invention.

Example (b):

as shown in fig. 1, a multi-temperature-zone LNG cold-chain logistics vehicle includes: the LNG storage tank comprises a refrigerated carriage 1, an LNG storage tank 2, a one-way valve 3, a heat exchanger 4, a gravity heat pipe 5, a partition plate 6 and an automobile engine 7, wherein the heat exchanger 4 is arranged at the top of the refrigerated carriage 1 and is connected with an LNG liquid inlet pipeline and an LNG gas outlet pipeline; the outer surface of the heat exchanger 4 is coated with a heat insulation material to reduce heat leakage; the heat exchanger 4 can also be made into a double-layer structure, and the two layers are vacuumized, so that the heat insulation performance is ensured to the maximum extent.

The condensation section of the gravity heat pipe 5 is arranged in the heat exchanger 4, the evaporation sections are distributed in different areas of the refrigerator van 1, and the heat insulation section is arranged in the heat insulation layer of the refrigerator van (1); the heat pipe condensation segment directly contacts with LNG, and heat exchange efficiency is high. The evaporation section of the heat pipe can be embedded into the inner wall of the carriage or can be exposed in the carriage. The fan can be added near the heat pipe, which is beneficial to enhancing the uniformity of the temperature distribution in each area.

The interior of the refrigerator van 1 is divided into different areas by the partition boards 6, the number of the heat pipes contained in each area is different, the more the number of the heat pipes is, the larger the refrigerating capacity is, and the lower the temperature in each area is, so that a multi-temperature-area van is formed.

The partition plate 6 is positioned in the refrigerator carriage 1, is made of materials with excellent heat insulation performance, has good air tightness, and the air in different temperature areas cannot be communicated; the evaporation sections of the gravity heat pipes 5 can also be uniformly distributed in the carriage, and the partition plates 6 are made into a movable design; the carriage is divided into areas with different volumes by the sliding partition plate, and the number of the heat pipes contained in each area is different, so that the multi-temperature-area and multi-volume functions of the refrigerated carriage can be realized, and the reasonable utilization of the internal space is realized.

The one-way valve 3 is used for preventing the LNG from flowing back, and can be replaced by a circulating pump to convey the LNG from the liquid storage tank to the heat exchanger 4, so that the same function is realized; a gas-liquid separator can be additionally arranged on an inlet of the automobile engine 7 and a gas outlet pipeline of the heat exchanger 4, so that unvaporized LNG can be prevented from entering the engine and interfering the normal operation of the engine.

The utility model discloses a work implementation mode as follows:

LNG flows out of the liquid storage tank, flows into the heat exchanger through the one-way valve and is vaporized into a gaseous state, and the vaporized LNG enters an automobile engine to be combusted and do work. The working medium of the gravity heat pipe evaporation section absorbs the heat in the carriage and evaporates, the heat is released at the condensation section, and the working medium is condensed after absorbing the cold energy of the LNG and then flows back to the heat pipe evaporation section to continue refrigerating the carriage. The gravity heat pipe depends on the gravity of the working medium as a driving force, and does not consume extra energy. The refrigerating carriages in different areas have different numbers of heat pipes and different refrigerating capacities, and can maintain different carriage temperatures, so that the function of the multi-temperature-zone carriage is realized.

In addition, it should be noted that the specific embodiments described in the present specification may differ in the shape of the components, the names of the components, and the like. All equivalent or simple changes made according to the structure, characteristics and principle of the utility model are included in the protection scope of the utility model. Various modifications, additions and substitutions may be made by those skilled in the art without departing from the scope of the invention as defined in the accompanying claims.

Claims

1. The utility model provides a multi-temperature-zone LNG cold chain logistics car which characterized in that: the multi-temperature-zone LNG cold chain logistics car include: the LNG storage tank is characterized by comprising a refrigerator compartment (1), an LNG storage tank (2), a one-way valve (3), a heat exchanger (4), a gravity heat pipe (5), a partition plate (6) and an automobile engine (7);

the heat exchanger (4) is arranged at the top of the refrigerator carriage (1) and is connected with a liquid inlet pipeline and a gas outlet pipeline of the LNG liquid storage tank (2);

the gravity heat pipe (5) comprises a condensation section, an insulation section and an evaporation section, the condensation section is arranged in the heat exchanger (4), the evaporation section is distributed in different areas of the refrigerator van (1), and the insulation section is arranged in the heat insulation layer of the refrigerator van (1);

the interior of the refrigerator compartment (1) is divided into different areas by the partition plate (6), and the number of heat pipes contained in each area is different.

2. The multi-temperature-zone LNG cold-chain logistics vehicle of claim 1, characterized in that: the partition board (6) is made of materials with high heat preservation performance and good air tightness, so that the temperature in different areas of the refrigerator carriage (1) is different.

3. The multi-temperature-zone LNG cold-chain logistics vehicle of claim 1, characterized in that: the evaporation sections of the gravity heat pipes (5) are uniformly distributed in the carriage, and the partition plates (6) are movably arranged.

4. The multi-temperature-zone LNG cold-chain logistics vehicle of claim 1, characterized in that: the one-way valve (3) can be replaced by a circulating pump to convey LNG from the liquid storage tank to the heat exchanger (4).

5. The multi-temperature-zone LNG cold-chain logistics vehicle of claim 1, characterized in that: and a gas-liquid separator is arranged on an inlet of the automobile engine (7) and an air outlet pipeline of the heat exchanger (4).

6. The multi-temperature-zone LNG cold-chain logistics vehicle of claim 1, characterized in that: the outer surface of the heat exchanger (4) is wrapped with a heat insulation material; or the heat exchanger (4) is arranged into a double-layer structure, and a vacuum area is arranged between the two layers, so that the heat insulation performance is ensured to the maximum extent.