CN210511036U

CN210511036U - Novel LNG vaporizer

Info

Publication number: CN210511036U
Application number: CN201921288048.1U
Authority: CN
Inventors: 张建明; 姬广存
Original assignee: Yingjia Power Technology Wuxi Co ltd
Current assignee: Yingjia Power Technology Wuxi Co ltd
Priority date: 2019-08-09
Filing date: 2019-08-09
Publication date: 2020-05-12
Anticipated expiration: 2029-08-09

Abstract

The utility model belongs to the technical field of the vaporizer, concretely relates to novel LNG vaporizer. This novel LNG vaporizer, including shell, mesochite and inner shell, be equipped with the mesochite between inner shell and the shell, inner shell, shell and mesochite tip are equipped with first flange and second flange respectively, and the shell surrounds formation heat exchange chamber with the mesochite, and the inner shell surrounds formation feed liquor chamber with the mesochite, sets up logical liquid hole on the mesochite, realizes the intercommunication in heat exchange chamber and feed liquor chamber, and the quantity and the position that lead to the liquid hole are adjusted according to the vaporization ability demand of vaporizer, and the heat exchange intracavity is arranged in to outer coil pipe and interior coil pipe to respectively with first joint and second articulate. The beneficial effects are as follows: the fuel can be applied to a dual-fuel injection system, and the blank in the market is filled; the vaporization pressure range of the vaporizer is greatly improved; the installation space of the carburetor is saved; the power of the engine radiator is reduced, and the engine cost is saved; and the power loss of the engine water pump can be reduced.

Description

Novel LNG vaporizer

Technical Field

The utility model belongs to the technical field of the vaporizer, concretely relates to novel LNG vaporizer.

Background

LNG (Liquefied Natural Gas) has been widely used as a clean energy source, and in recent years, the LNG industry has rapidly developed and the production of LNG worldwide has increased at a rate of over 20%.

In the current market, in internal combustion engine vehicles using natural gas as fuel, the carrying mode of natural gas on vehicles is divided into two modes, namely Compressed Natural Gas (CNG) and Liquefied Natural Gas (LNG). Compressed Natural Gas (CNG) is high pressure gaseous natural gas, typically one volume of compressed natural gas is converted to 200 standard volumes of natural gas. Liquefied Natural Gas (LNG) is natural gas in liquid form, typically a volume of liquefied natural gas converted to 600 standard volumes of natural gas. The CNG vehicle has insufficient continuous driving capability and is suitable for small vehicles such as taxies. The continuous driving capability of LNG vehicles is greatly increased compared to CNG vehicles, and medium and heavy goods vehicles have enough space to store equipment.

Diesel engines and gasoline engines are used extensively in modern society, but with the increasing national emission level requirements, diesel engines and gasoline engines cannot meet the increasingly stringent emission standards. A direct injection technique for realizing dual-fuel injection features that a small amount of diesel oil is injected into combustion chamber, after compression ignition, the temp in combustion chamber of IC engine is raised, and the compressed natural gas is ignited for combustion. The technology can provide thermal efficiency superior to that of a diesel engine, can greatly reduce the emission of pollutants such as PM value and NOx, and is a cleaner and more economical internal combustion engine fuel injection system. When the dual-fuel injection system works, compressed natural gas with different pressures and flows needs to be provided according to working condition requirements. LNG tanks provide compressed natural gas to the engine, requiring the LNG to be pumped out by cryogenic pumps and vaporized to CNG by vaporizers.

In the existing LNG vaporizer products in the market, all the LNG vaporizers are external vaporizers, compressed natural gas vaporized by the vaporizers is used for injection combustion of an engine air passage, the pressure of the vaporized compressed natural gas is about 8 bar-20 bar, a dual-fuel injection system requires the pressure of the vaporized vaporizers to be in the range of 130 bar-550 bar, and no LNG vaporizer product suitable for the dual-fuel system exists in the market at present.

In summary, there is a need to develop a new and complete LNG vaporizer product suitable for dual-fuel systems, which fully and timely vaporizes the LNG pumped from the LNG tank by the cryogenic pump to deliver high-pressure natural gas to the internal combustion engine at regular time and quantity, and ensure the safe and reliable operation of the whole dual-fuel system, thereby meeting the requirements of market and social development.

SUMMERY OF THE UTILITY MODEL

The utility model provides a remedy prior art's defect, provide a novel LNG vaporizer.

The utility model discloses a realize through following technical scheme:

the utility model provides a novel LNG vaporizer, includes shell, mesochite and inner shell, be equipped with the mesochite between inner shell and the shell, inner shell, shell and mesochite tip are equipped with first flange and second flange respectively, and the shell surrounds formation heat exchange chamber with the mesochite, and the inner shell surrounds formation feed liquor chamber with the mesochite, sets up logical liquid hole on the mesochite, realizes the intercommunication in heat exchange chamber and feed liquor chamber, and the quantity and the position that lead to the liquid hole are adjusted according to the vaporization ability demand of vaporizer, and the heat exchange intracavity is arranged in to outer coil pipe and interior coil pipe to respectively with first joint and second articulate.

Further, set up inlet and liquid outlet on the first flange, set up water flow valve and temperature sensor between liquid outlet and the engine hydrologic cycle, engine coolant liquid in the hydrologic cycle export is connected with the inlet, and the coolant liquid gets into the feed liquor chamber through the inlet along third arrow direction, gets into the heat exchange chamber through logical liquid hole again, and after the coolant liquid realized the heat exchange, along fourth arrow direction, flow through the liquid outlet.

Further, be equipped with the vaporization import on the first flange, be equipped with the vaporization export on the second flange, LNG is along first arrow direction, flows into first joint from the vaporization import, gets into inner coil and outer coil, and at the heat exchange intracavity, LNG carries out the heat exchange with the coolant liquid, and LNG is heated and is vaporized into CNG, and CNG passes through the second and connects, flows out from the vaporization export along the direction of second arrow.

Further, the coil pipes in the heat exchange cavity are double-row pipes or single-row pipes or three-row pipes of the outer coil pipe and the inner coil pipe.

The utility model has the advantages that:

(1) the utility model relates to a vaporizer, which can be applied to a dual-fuel injection system, and fills the blank in the market;

(2) the utility model relates to a vaporizer, the CNG pressure that the vaporization got can reach 130bar ~550bar within ranges, has promoted the vaporization pressure range of vaporizer greatly;

(3) the vaporizer related to by the utility model can be integrated into the LNG tank together with the cryogenic pump, thus saving the installation space of the vaporizer;

(4) the utility model relates to a vaporizer, through the vaporization that uses the coolant liquid of engine to carry out LNG, realize recycling the useless heat energy that the engine gived off, and can reduce the power of the engine radiator, practiced thrift engine economic cost;

(5) the utility model relates to a vaporizer can carry out the regulation of coolant liquid flow according to the demand of the different operating modes of engine, not only effectively prevents freezing of vaporizer inside, can reduce engine water pump's power loss moreover.

Drawings

The present invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a working schematic diagram of the present invention;

FIG. 3 is a schematic structural view of the rack pipe of the present invention with single row;

FIG. 4 is a schematic structural view of the rack pipe of the present invention with three rows;

FIG. 5 is a schematic view of the external structure of the present invention;

fig. 6 is a schematic diagram of an external structural modification of the present invention.

In the figure, a first flange 01, an outer shell 02, a middle shell 03, an inner shell 04, an outer coil 05, an inner coil 06, a first joint 07, a second flange 08, a liquid through hole 09, a heat exchange cavity 10, a liquid inlet cavity 11, a second joint 12, a vaporization inlet 13, a vaporization outlet 14, a liquid inlet 15, a liquid outlet 16, a first arrow 17, a second arrow 18, a third arrow 19, a fourth arrow 20, a water flow valve 21, a temperature sensor 22 and a water circulation 23 are adopted.

Detailed Description

Fig. 1-6 show an embodiment of the present invention. The utility model discloses a novel LNG vaporizer, including shell, mesochite and inner shell, be equipped with the mesochite between inner shell and the shell, inner shell, shell and mesochite tip are equipped with first flange and second flange respectively, and the shell surrounds with the mesochite and forms the heat exchange chamber, and the inner shell surrounds with the mesochite and forms the feed liquor chamber, sets up logical liquid hole on the mesochite, realizes the intercommunication in heat exchange chamber and feed liquor chamber, and the quantity and the position that lead to the liquid hole are adjusted according to the vaporization ability demand of vaporizer, and the heat exchange intracavity is arranged in to outer coil pipe and inner coil pipe to respectively with first joint and second articulate.

The utility model discloses a novel LNG vaporizer, shell 02 during the use, mesochite 03, inner shell 04 is connected with first flange 01 and second flange 08 respectively, connected mode can be for the welding, interference fit, the screw thread structure and other modes that can realize the connection, temperature sensor 22 can pass the temperature signal of the 16 coolant liquids of play liquid mouth to ECU, when a large amount of LNG need the vaporization in heat exchange chamber 10, the coolant liquid reduces at the temperature of liquid outlet 16, when reducing the temperature and surpassing the setting value, ECU sends the signal to water flow valve 21, increase water flow valve 21's coolant liquid flow, accelerate heat exchange chamber 10's vaporization rate. When the LNG entering the vaporizer decreases, the temperature of the coolant at the outlet 16 increases, and when the temperature exceeds a set value, the ECU sends a signal to the water flow valve 21 to decrease the coolant flow of the water flow valve 21, slowing the vaporization rate of the heat exchange chamber 10.

The utility model discloses a novel LNG vaporizer, as shown in figure 3 and figure 4, the coil pipe of vaporizer can set up to single calandria, three calandria according to the demand, or set up to the coil pipe layout mode of other forms.

The utility model discloses a novel LNG vaporizer, the appearance structure of vaporizer is shown in figure 5 and figure 6, according to the different appearance structure of installation space selection, and figure 5 can be built-in to the LNG jar together with the cryogenic pump, also in order to install the outside at the LNG jar, and other position spaces that are fit for the installation, and figure 6 can be installed in the housing of LNG jar end, or other position spaces that are fit for the installation.

The utility model discloses a novel LNG vaporizer not only contains and gasifies liquid natural gas into gaseous natural gas, still contains liquid petroleum gas, liquid methane, liquid hydrogen, liquid nitrogen gas and other liquid gas, gasifies into gaseous gas to satisfy the demand of each system's product.

The present invention is not limited to the above embodiments, and any person should learn to make under the teaching of the present invention and the present invention has the same or similar technical solution, and all fall into the protection scope of the present invention.

The technology, shape and construction parts which are not described in detail in the present invention are all known technology.

Claims

1. The utility model provides a novel LNG vaporizer, includes shell, mesochite and inner shell, a serial communication port, be equipped with the mesochite between inner shell and the shell, inner shell, shell and mesochite tip are equipped with first flange and second flange respectively, and the shell surrounds with the mesochite and forms the heat exchange chamber, and the inner shell surrounds with the mesochite and forms the feed liquor chamber, sets up logical liquid hole on the mesochite, realizes the intercommunication in heat exchange chamber and feed liquor chamber, and the quantity and the position that lead to the liquid hole are adjusted according to the vaporization ability demand of vaporizer, and the heat exchange intracavity is arranged in to outer coil pipe and inner coil pipe to connect with first joint and second articulate respectively.

2. The novel LNG vaporizer of claim 1, wherein: set up inlet and liquid outlet on the first flange, set up water flow valve and temperature sensor between liquid outlet and the engine hydrologic cycle, engine coolant liquid in the hydrologic cycle export is connected with the inlet, and the coolant liquid gets into the feed liquor chamber through the inlet along third arrow direction, gets into the heat exchange chamber through leading to the liquid hole again, and the coolant liquid realizes the heat exchange after, along fourth arrow direction, flows through the liquid outlet.

3. The novel LNG vaporizer of claim 1, wherein: be equipped with the vaporization import on the first flange, be equipped with the vaporization export on the second flange, LNG flows into first joint along first arrow direction from the vaporization import, gets into inner coil and outer coil, and in the heat exchange intracavity, LNG carries out the heat exchange with the coolant liquid, and LNG is heated and is vaporized into CNG, and CNG passes through the second and connects, flows out from the vaporization export along second arrow direction.

4. The novel LNG vaporizer of claim 1, wherein: the coil pipes in the heat exchange cavity are double-row pipes or single-row pipes or three-row pipes of the outer coil pipe and the inner coil pipe.