CN211370552U

CN211370552U - Marine diesel oil and natural gas co-combustion intelligent system

Info

Publication number: CN211370552U
Application number: CN202020175478.9U
Authority: CN
Inventors: 陆忠利
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-02-17
Filing date: 2020-02-17
Publication date: 2020-08-28
Anticipated expiration: 2030-02-17

Abstract

The utility model relates to the technical field of a marine mixed combustion system, in particular to a marine diesel oil and natural gas mixed combustion intelligent system, which comprises an ECU, a diesel oil tank, a natural gas storage tank, an engine, a diesel oil injection device and a natural gas injection assembly, wherein the natural gas injection assembly is provided with a secondary filtering assembly, the diesel oil tank pipeline is sequentially connected with the diesel oil injection device and the engine, the natural gas storage tank is sequentially connected with the natural gas injection assembly and the engine through pipelines, a pulse valve is connected on the pipeline between the engine and the natural gas injection assembly, a natural gas concentration sensor detects the concentration of the natural gas flowing out from a filter in real time, when the concentration of the natural gas does not reach the standard, the ECU controls to open the second electromagnetic valve and close the first electromagnetic valve, and the natural gas flowing out of the natural gas storage tank is filtered twice by the first filter and the second filter, so that the purity is further improved, and the power of the engine is better met.

Description

Marine diesel oil and natural gas co-combustion intelligent system

Technical Field

The utility model relates to a marine system technical field that fires thoughtlessly, in particular to marine diesel oil natural gas intelligent system that fires thoughtlessly.

Background

With the rising price of diesel fuel and the enactment of increasingly stringent emission regulations, many power manufacturers are seeking to replace traditional fuels with new fuels, and reducing the dependence on petroleum is a widely raised problem worldwide. The development of renewable and pollution-free technologies is already proposed by various countries in the agenda due to the establishment of emission regulations, and the research and development links of the clean energy power technology are never stopped in order to meet the requirements of future development. At present, the clean automobile fuel which can be rapidly marketed is natural gas, natural gas resources are abundant, and the exploration reserves of global combustible ice are considerable, so that the natural gas can play a great role in replacing energy sources, nitrogen oxides generated by combustion of the natural gas are almost zero, and liquefied natural gas is obviously superior to diesel oil from the perspective of pollution control. However, natural gas in the natural gas injection module generally requires a filter to filter the natural gas first, and a single filter may be difficult to filter the natural gas, which may cause the natural gas to flow to the engine to contain a large amount of impurities and affect the operation power.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a marine diesel oil natural gas co-combustion intelligent system to solve the problem that proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: including ECU, diesel tank, natural gas holder, engine, diesel oil injection apparatus and natural gas injection subassembly, be provided with the secondary filter subassembly on the natural gas injection subassembly, the diesel tank pipeline connects gradually diesel oil injection apparatus with the engine, the natural gas holder passes through the pipeline connects gradually the natural gas injection subassembly with the engine, the engine with between the natural gas injection subassembly be connected with the pulse valve on the pipeline.

Preferably, the diesel injection device is a fuel injection pump.

Preferably, the natural gas injection assembly comprises a first electromagnetic valve, a first filter, a pressure stabilizer and a natural gas injection valve which are sequentially connected through a pipeline, the first electromagnetic valve is connected between natural gas storage tanks, the pressure stabilizer is connected between the pressure stabilizers, the natural gas injection valve is connected between the pressure stabilizer and the engine, and the first electromagnetic valve is in signal connection with the ECU.

Preferably, the pulse valve is connected between the natural gas injection valve and the engine, and the ECU is in signal connection with the pulse valve.

Preferably, the secondary filtering component comprises a first electromagnetic valve and a second filter, the second filter is connected between the natural gas storage tank and the first filter through the pipeline, the first electromagnetic valve is connected on the pipeline between the natural gas storage tank and the second filter, and the second electromagnetic valve is in signal connection with the ECU.

Preferably, a natural gas concentration sensor is arranged on the pipeline between the first filter and the voltage stabilizer, and the model of the natural gas concentration sensor is MQ-4 natural gas sensor, and the natural gas concentration sensor is in signal connection with the ECU.

The utility model discloses a technological effect and advantage:

the natural gas concentration sensor detects the concentration of the natural gas flowing out of the first filter in real time, when the concentration of the natural gas does not reach the standard, the ECU controls the second electromagnetic valve to be opened and the first electromagnetic valve to be closed, the natural gas flowing out of the natural gas storage tank is filtered twice through the first filter and the second filter, the purity is further improved, and the power of the engine is better met.

Drawings

Fig. 1 is a schematic view of the system of the present invention.

In the figure: 1. an ECU; 2. a diesel tank; 3. a natural gas storage tank; 4. an engine; 5. a diesel injection device; 6. a natural gas injection assembly; 61. a first solenoid valve; 62. a first filter; 63. a voltage regulator; 64. a natural gas injection valve; 7. a secondary filtration component; 71. a second solenoid valve; 72. a second filter; 8. a pulse valve; 9. a natural gas concentration sensor.

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.

The utility model provides a marine diesel natural gas co-combustion intelligent system as shown in figure 1, including ECU1, diesel tank 2, natural gas holder 3, engine 4, diesel injection device 5 and natural gas injection subassembly 6, diesel injection device 5 is the injection pump, be provided with secondary filter assembly 7 on the natural gas injection subassembly 6, diesel tank 2 pipeline connects gradually diesel injection device 5 and engine 4, natural gas holder 3 connects gradually natural gas injection subassembly 6 and engine 4 through the pipeline, be connected with pulse valve 8 on the pipeline between engine 4 and the natural gas injection subassembly 6.

The natural gas injection assembly 6 comprises a first electromagnetic valve 61, a first filter 62, a pressure stabilizer 63 and a natural gas injection valve 64 which are sequentially connected through a pipeline, the first electromagnetic valve 61 is connected between the natural gas storage tank 3, the pressure stabilizer 63 is connected between the pressure stabilizers 63, and the natural gas injection valve 64 is connected between the pressure stabilizer 63 and the engine 4.

The pulse valve 8 is connected between the natural gas injection valve 64 and the engine 4, the ECU1 is connected with the pulse valve 8 through a signal, and when the pressure of the natural gas is too high, the pulse valve 8 is opened timely to inject the natural gas into a combustion chamber.

The secondary filtering component 7 comprises a first electromagnetic valve 61 and a second filter 72, the second filter 72 is connected between the natural gas storage tank 3 and the first filter 62 through a pipeline, and the first electromagnetic valve 61 is connected on the pipeline between the natural gas storage tank 3 and the second filter 72.

A natural gas concentration sensor 9 is arranged on a pipeline between the first filter 62 and the voltage stabilizer 63, the natural gas concentration sensor is of the type MQ-4 natural gas sensor, the natural gas concentration sensor 9 is in signal connection with the ECU1, a gas sensitive material used by the MQ-4 natural gas sensor is tin dioxide with low conductivity in clean air, when combustible gas exists in the environment where the natural gas concentration sensor 9 is located, the conductivity of the natural gas sensor is increased along with the increase of the concentration of the combustible gas in the air, and the change of the conductivity can be converted into an output signal corresponding to the concentration of the gas through a circuit module of the ECU1 or by using an analog-to-digital converter.

The natural gas concentration sensor 9 detects the concentration of the natural gas flowing out of the first filter 62 in real time, when the concentration of the natural gas does not reach the standard, the ECU1 controls the second electromagnetic valve 71 to be opened and the first electromagnetic valve 61 to be closed, and the natural gas flowing out of the natural gas storage tank 3 is filtered twice through the first filter 62 and the second filter 72, so that the purity is further improved, and the power of the engine 4 is better met.

Meanwhile, when the first filter 62 and the second filter 72 are simultaneously operated, the pressure in the pressure stabilizer 63 needs to be increased so that the natural gas can flow out from the first filter and the second filter 72 more smoothly, therefore, when the natural gas with the increased pressure is injected into the combustion chamber of the engine 4 from the natural gas injection valve 64, a certain pressure needs to be reduced, the pulse injection through the pulse valve 8 can reduce the pressure of the natural gas, and the purity can reach the requirement.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications and variations can be made in the embodiments or in part of the technical features of the embodiments without departing from the spirit and the scope of the invention.

Claims

1. Marine diesel oil natural gas co-combustion intelligent system, its characterized in that: including ECU (1), diesel tank (2), natural gas holder (3), engine (4), diesel oil injection apparatus (5) and natural gas injection subassembly (6), be provided with secondary filter subassembly (7) on natural gas injection subassembly (6), diesel tank (2) pipeline connects gradually diesel oil injection apparatus (5) with engine (4), natural gas holder (3) pass through the pipeline connects gradually natural gas injection subassembly (6) with engine (4), engine (4) with between natural gas injection subassembly (6) be connected with pulse valve (8) on the pipeline.

2. The intelligent marine diesel and natural gas co-combustion system according to claim 1, wherein: the diesel injection device (5) is an injection pump.

3. The intelligent marine diesel and natural gas co-combustion system according to claim 2, wherein: natural gas injection subassembly (6) are including looping through first solenoid valve (61), filter (62), stabiliser (63) and natural gas injection valve (64) that the pipeline is connected, first solenoid valve (61) are connected between natural gas holder (3), stabiliser (63) are connected between stabiliser (63), natural gas injection valve (64) are connected stabiliser (63) with between engine (4), first solenoid valve (61) signal connection ECU (1).

4. The intelligent marine diesel-natural gas co-combustion system according to claim 3, wherein: the pulse valve (8) is connected between the natural gas injection valve (64) and the engine (4), and the ECU (1) is in signal connection with the pulse valve (8).

5. The intelligent marine diesel and natural gas co-combustion system according to claim 4, wherein: the secondary filtering assembly (7) comprises a second electromagnetic valve (71) and a second filter (72), the second filter (72) is connected between the natural gas storage tank (3) and the first filter (62) through the pipeline, the second electromagnetic valve (71) is connected on the pipeline between the natural gas storage tank (3) and the second filter (72), and the second electromagnetic valve (71) is in signal connection with the ECU (1).

6. The intelligent marine diesel-natural gas co-combustion system according to claim 5, wherein: and a natural gas concentration sensor (9) is arranged on the pipeline between the first filter (62) and the voltage stabilizer (63) and is of the type MQ-4 natural gas sensor, and the natural gas concentration sensor (9) is in signal connection with the ECU (1).