An oil supply device for a marine burner

Abstract

The present invention discloses an oil supply device for a marine burner, comprising: a heavy oil tank, a gasoline tank and a diesel oil tank. The output pipe of the diesel oil tank and the output pipe of the heavy oil tank are both connected to a first oil inlet three-way valve. A first delivery pipe is connected to the first oil inlet three-way valve. A first delivery pump is arranged on the first delivery pipe. The first delivery pipe is connected to the burner oil inlet pipe. The return pipe of the diesel oil tank and the return pipe of the heavy oil tank are connected to the burner return pipe through a first return oil three-way valve. A first back pressure valve is arranged between the first delivery pipe and the first return pipe. The output pipe of the gasoline tank is connected to a second delivery pipe. A second delivery pump is arranged on the second delivery pipe. The second delivery pipe is connected to the burner oil inlet pipe. The input end of the second delivery pipe is connected with a second return pipe, and the second return pipe is connected to the burner return pipe. A second back pressure valve is arranged between the second delivery pipe and the second return pipe. The advantage of the present invention is that the pressure in the oil inlet connection pipe is stable, so that the combustion stability of the burner is good.

Description

Technical Field

[0001] The present invention relates to the technical field of marine burners. Background Art

[0002] An oil supply device for a marine burner generally includes: a heavy oil tank, a heavy oil delivery pipe and a heavy oil return pipe are connected to the heavy oil tank. A burner oil inlet interface and a burner oil return interface are provided on the burner. The heavy oil delivery pipe is connected to the burner oil inlet interface, a heavy oil pump is provided on the heavy oil delivery pipe, and the burner oil return interface is connected to the heavy oil return pipe.

[0003] The above oil supply device is simple, but has the following technical problems: First, as marine environmental management becomes more and more strict, the burner needs to burn different fuels in different sea areas to meet the emission regulations of different sea areas. Obviously, the above oil supply device with only heavy oil as fuel cannot meet the requirements. Second, the pipeline pressure is unstable, thus affecting the combustion efficiency. Third, from the heavy oil tank to the burner, the pipeline is relatively long, and it is not convenient for maintenance and installation. Summary of the Invention

[0004] The purpose of the present invention is to provide an oil supply device for a marine burner, which can provide two fuels, heavy oil and gasoline, and has stable pressure in the oil supply pipeline.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: An oil supply device for a marine burner includes: a heavy oil tank, a heavy oil tank output pipe with a valve and a heavy oil tank return pipe with a valve are provided on the heavy oil tank. A burner oil inlet pipe and a burner oil return pipe are provided at the end of the burner. It also includes a gasoline tank and a diesel tank. A gasoline tank output pipe with a valve is provided on the gasoline tank. A diesel tank output pipe with a valve and a diesel tank return pipe with a valve are provided on the diesel tank. The diesel tank output pipe and the heavy oil tank output pipe are both connected to a first oil inlet three-way valve. A first delivery pipe is connected to the first oil inlet three-way valve. A first delivery pump is provided on the first delivery pipe. The first delivery pipe is connected to the burner oil inlet pipe. The diesel tank return pipe and the heavy oil tank return pipe are both connected to a first oil return three-way valve. A first oil return pipe is connected to the first oil return three-way valve. The first oil return pipe is connected to the burner oil return pipe; a first back pressure valve is provided between the first delivery pipe and the first oil return pipe close to the burner; the gasoline tank output pipe is connected to the input end of a second delivery pipe. A second delivery pump is provided on the second delivery pipe. The second delivery pipe is connected to the burner oil inlet pipe. The input end of the second delivery pipe is connected to a second oil return pipe. The second oil return pipe is connected to the burner oil return pipe. A second back pressure valve is provided between the second delivery pipe and the second oil return pipe close to the burner.

[0006] Further, for the fuel supply device of a marine burner described above, the first delivery pipe and the second delivery pipe are both connected to the second fuel inlet three-way valve, and the second fuel inlet three-way valve is connected to the burner fuel inlet pipe through a fuel inlet connecting pipe.

[0007] Furthermore, for the fuel supply device of a marine burner described above, the input ends of the first return pipe and the second return pipe are both connected to the second return oil three-way valve, and the second return oil three-way valve is connected to the burner return oil pipe through a return oil connecting pipe.

[0008] Further, for the fuel supply device of a marine burner described above, two first delivery pumps are provided on the first delivery pipe, and the two first delivery pumps are arranged in parallel.

[0009] Furthermore, for the fuel supply device of a marine burner described above, two second delivery pumps are provided on the second delivery pipe, and the two second delivery pumps are arranged in parallel.

[0010] Furthermore, for the fuel supply device of a marine burner described above, the first delivery pump is arranged in the first pumping module, and the first pumping module is arranged in the first delivery pipe; the second delivery pump is arranged in the second pumping module, and the second pumping module is arranged in the second delivery pipe; the first back pressure valve, the second back pressure valve, the second fuel inlet three-way valve, the fuel inlet connecting pipe, the second return oil three-way valve, and the return oil connecting pipe are all arranged in the switching control module, and the switching control module is connected to the first delivery pipe, the second delivery pipe, the first return pipe, the second return pipe, the burner fuel inlet pipe, and the burner return oil pipe.

[0011] The advantages of the present invention are as follows: First, a gasoline tank is additionally provided to provide another fuel for the combustion of the burner to meet the emission requirements in different sea areas. At the same time, a diesel tank is provided so that before switching from heavy oil to gasoline, the heavy oil in the pipeline can be flushed and the heavy oil can flow back to the heavy oil tank to avoid the cooling and sedimentation of heavy oil and blockage of the pipeline. Second, when burning heavy oil, the heavy oil circulates throughout the fuel supply pipeline outside the burner, thus avoiding the occurrence of cooling and sedimentation in the pipeline between the burner and the heavy oil tank, which effectively improves the ignition success rate and combustion efficiency of the burner. Third, the setting of the first back pressure valve and the second back pressure valve effectively stabilizes the delivery pressure in the fuel inlet connecting pipe, thereby improving the combustion stability of the burner. And because the viscosities of the two fuels, heavy oil and gasoline, are different, the pressures of the back pressure valves can be adjusted separately so that the pressure in the fuel inlet connecting pipe can be maintained at the delivery pressures suitable for heavy oil and gasoline respectively, so that the burner can work stably during the combustion of heavy oil and gasoline. Description of the Drawings

[0012] Figure 1 is a schematic diagram of the principle of the fuel supply device of a marine burner described in the present invention. Detailed implementation mode

[0013] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0014] As Figure 1 shown, an oil supply device for a marine burner includes: a heavy oil tank 1, a gasoline tank 3, and a diesel tank 4. A heavy oil tank output pipe 101 with a first check valve 1011 and a heavy oil tank return pipe 102 with a valve are provided on the heavy oil tank 1; one end of the burner 2 is provided with a burner inlet pipe 21 and a burner return pipe 22; a gasoline tank output pipe 31 with a third check valve 311 is provided on the gasoline tank 3, and a diesel tank output pipe 41 with a second check valve 411 and a diesel tank return pipe 42 with a valve are provided on the diesel tank 4.

[0015] Both the diesel tank output pipe 41 and the heavy oil tank output pipe 101 are connected to a first oil inlet three-way valve 5. A first delivery pipe 6 is connected to the first oil inlet three-way valve 5. A first delivery pump 61 is provided on the first delivery pipe 6. The first delivery pipe 6 is connected to the burner inlet pipe 21. In order to improve the delivery power, in this embodiment, two first delivery pumps 61 are provided on the first delivery pipe 6, and the two first delivery pumps 61 are arranged in parallel.

[0016] Both the diesel tank return pipe 42 and the heavy oil tank return pipe 102 are connected to a first oil return three-way valve 7. A first oil return pipe 8 is connected to the first oil return three-way valve 7. The first oil return pipe 8 is connected to the burner return pipe 22. A first back pressure valve 9 is provided between the first delivery pipe 6 close to the burner 2 and the first oil return pipe 8 close to the burner 2.

[0017] The gasoline tank output pipe 31 is connected to the input end of a second delivery pipe 10. A second delivery pump 15 is provided on the second delivery pipe 10. In order to improve the delivery power, two second delivery pumps 15 are provided on the second delivery pipe 10, and the two second delivery pumps 15 are arranged in parallel. The second delivery pipe 10 is connected to the burner inlet pipe 21. The input end of the second delivery pipe 10 is connected to a second oil return pipe 11, and the second oil return pipe 11 is connected to the burner return pipe 22. A second back pressure valve 12 is provided between the second delivery pipe 10 close to the burner 2 and the second oil return pipe 11 close to the burner 2.

[0018] In this embodiment, to simplify the pipeline connection, both the first delivery pipe 6 and the second delivery pipe 10 are connected to a second oil inlet three-way valve 13. The second oil inlet three-way valve 13 is connected to the burner inlet pipe 21 through an oil inlet connection pipe 131.

[0019] In this embodiment, the input ends of the first oil return pipe 8 and the second oil return pipe 11 are both connected to a second oil return three-way valve 14. The second oil return three-way valve 14 is connected to the burner return pipe 22 through an oil return connection pipe 141.

[0020] In this embodiment, the switching actions of the second oil inlet three-way valve 13 and the second oil return three-way valve 14 are carried out synchronously to ensure that when fuel is switched, heavy oil or diesel flows back through the first oil return pipe 8, and gasoline flows back through the second oil return pipe 11.

[0021] For the convenience of installation and maintenance, the first delivery pump 61 is arranged in the first pumping module 100, and the first pumping module 100 is arranged in the first delivery pipe 6. The second delivery pump 15 is arranged in the second pumping module 200, and the second pumping module 200 is arranged in the second delivery pipe 10. The first back-pressure valve 9, the second back-pressure valve 12, the second oil inlet three-way valve 13, the oil inlet connecting pipe 131, the second oil return three-way valve 14, and the oil return connecting pipe 141 are all integrated in the switching control module 300, and the switching control module 300 is connected to the first delivery pipe 6, the second delivery pipe 10, the first oil return pipe 8, the second oil return pipe 11, the burner oil inlet pipe 21, and the burner oil return pipe 22.

[0022] When burning heavy oil, the heavy oil in the heavy oil tank 1 is pumped by the two first delivery pumps 61 in the first pumping module 100, and successively passes through the heavy oil tank outlet pipe 101, the first oil inlet three-way valve 5, the first delivery pipe 6, the first pumping module 100, and then enters the burner 2 through the second oil inlet three-way valve 13, the oil inlet connecting pipe 131, and the burner oil inlet pipe 21 in the switching control module 300 for combustion. A part of the heavy oil in the burner 2 flows back to the heavy oil tank 1 through the burner oil return pipe 22, the oil return connecting pipe 141, the second oil return three-way valve 14, and the first oil return pipe 8, and circulates continuously in this way. Due to the high viscosity of heavy oil, the circulation can effectively prevent the heavy oil from cooling and accumulating in the pipeline, thus ensuring the efficient combustion of the burner 2. The setting of the first back-pressure valve 9 enables a part of the heavy oil in the first delivery pipe 6 to directly flow into the first oil return pipe 8 through the first back-pressure valve 9. When the pressure in the oil inlet connecting pipe 131 increases, the first back-pressure valve 9 will act to increase the flow rate of the heavy oil pumped by the first delivery pump 61 directly flowing into the first oil return pipe 8 through the first back-pressure valve 9. Therefore, the first back-pressure valve 9 plays an effective role in stabilizing the pressure in the oil inlet connecting pipe 131, thereby effectively improving the combustion stability of the burner 2.

[0023] When it is necessary to switch from heavy oil combustion to gasoline combustion, the first oil inlet three-way valve 5 is switched to the diesel output pipe. Diesel in the diesel tank 4 passes through the diesel tank output pipe 41, the first oil inlet three-way valve 5, the first delivery pipe 6, the first pumping module 100, and then through the second oil inlet three-way valve 13, the oil inlet connecting pipe 131, and the burner oil inlet pipe 21 in the switching control module 300 to enter the burner 2 for combustion. Another part of the diesel in the burner 2 flows back through the burner oil return pipe 22, the oil return connecting pipe 141 in the switching control module 300, the second oil return three-way valve 14, and the first oil return pipe 8, thereby cleaning the pipeline to prevent heavy oil residues in the pipeline from cooling and forming deposits. The residual heavy oil in the pipeline flows back to the heavy oil tank 1 through the first oil return pipe 8 and the heavy oil tank oil return pipe 102. Diesel flows back to the diesel tank 4 through the diesel tank oil return pipe 42 via the first oil return pipe 8. By controlling the first oil return three-way valve 7, the heavy oil can first flow back to the heavy oil tank 1, and about 3 to 5 minutes later, the oil return is switched to the diesel tank oil return pipe 42, which ensures that the residual heavy oil does not contaminate the diesel tank 4.

[0024] After the diesel flushing is completed, stop the delivery pump 61 and start the second delivery pump 15. Gasoline in the gasoline tank 3 passes through the gasoline tank output pipe 31 and is pumped by two second delivery pumps 15. In sequence, it passes through the second delivery pipe 10, the second pumping module 200, and then through the second oil inlet three-way valve 13, the oil inlet connecting pipe 131, and the burner oil inlet pipe 21 in the switching control module 300 to enter the burner 2 for combustion. Another part of the gasoline in the burner 2 flows back through the burner oil return pipe 22, the oil return connecting pipe 141 in the switching control module 300, the second oil return three-way valve 14, and the second oil return pipe 11 to the input end of the second delivery pipe 10, and circulates continuously in this way. The second back pressure valve 12 also plays a role in stabilizing the pressure in the oil inlet connecting pipe 131, thereby effectively improving the combustion stability of the burner.

[0025] The advantages of the present invention are as follows: First, a gasoline tank 3 is provided to provide another fuel for the combustion of the burner 2 to meet the emission requirements in different sea areas. At the same time, a diesel tank 4 is provided so that before switching from heavy oil to gasoline, the heavy oil in the pipeline can be flushed and returned to the heavy oil tank 1 to avoid heavy oil cooling and deposition and blocking the pipeline. Second, when burning heavy oil, the heavy oil circulates in the entire oil supply pipeline outside the burner 2, thereby avoiding the occurrence of deposition due to cooling in the pipeline between the burner 2 and the heavy oil tank 1, which effectively improves the combustion efficiency and combustion stability of the burner 2. Third, the setting of the first back pressure valve 9 and the second back pressure valve 12 effectively stabilizes the conveying pressure in the oil inlet connecting pipe 131, thereby improving the combustion stability of the burner 2. And, since the viscosities of the two fuels, heavy oil and gasoline, are different, the pressures of the back pressure valves can be adjusted separately so that the pressures in the oil inlet connecting pipe 131 are maintained at the conveying pressures suitable for heavy oil and gasoline respectively, so that the burner 2 can work stably during heavy oil combustion and gasoline combustion.

Claims

1. An oil supply device for a marine burner, comprising: Heavy oil tank, a heavy oil tank output pipe with a valve and a heavy oil tank return pipe with a valve are provided on the heavy oil tank, a burner inlet pipe and a burner return pipe are provided at the end of the burner, and it is characterized in that: it further includes a gasoline tank and a diesel tank, a gasoline tank output pipe with a valve is provided on the gasoline tank, a diesel tank output pipe with a valve and a diesel tank return pipe with a valve are provided on the diesel tank, the diesel tank output pipe and the heavy oil tank output pipe are both connected to a first oil inlet three-way valve, a first delivery pipe is connected to the first oil inlet three-way valve, a first delivery pump is provided on the first delivery pipe, the first delivery pipe is connected to the burner inlet pipe, the diesel tank return pipe and the heavy oil tank return pipe are both connected to a first oil return three-way valve, a first oil return pipe is connected to the first oil return three-way valve, and the first oil return pipe is connected to the burner return pipe; a first back pressure valve is provided between the first delivery pipe and the first oil return pipe close to the burner; the gasoline tank output pipe is connected to the input end of a second delivery pipe, a second delivery pump is provided on the second delivery pipe, the second delivery pipe is connected to the burner inlet pipe, a second oil return pipe is connected to the input end of the second delivery pipe, the second oil return pipe is connected to the burner return pipe, and a second back pressure valve is provided between the second delivery pipe and the second oil return pipe close to the burner; the first delivery pipe and the second delivery pipe are both connected to a second oil inlet three-way valve, and the second oil inlet three-way valve is connected to the burner inlet pipe through an oil inlet connection pipe; the input end of the first oil return pipe and the input end of the second oil return pipe are both connected to a second oil return three-way valve, and the second oil return three-way valve is connected to the burner return pipe through an oil return connection pipe; the first delivery pump is arranged in a first pumping module, and the first pumping module is arranged in the first delivery pipe; the second delivery pump is arranged in a second pumping module, and the second pumping module is arranged in the second delivery pipe; the first back pressure valve, the second back pressure valve, the second oil inlet three-way valve, the oil inlet connection pipe, the second oil return three-way valve, and the oil return connection pipe are all arranged in a switching control module, and the switching control module is connected to the first delivery pipe, the second delivery pipe, the first oil return pipe, the second oil return pipe, the burner inlet pipe, and the burner return pipe.

2. The fuel supply device of a marine burner according to claim 1, characterized in that: Two first delivery pumps are provided on the first delivery pipe, and the two first delivery pumps are arranged in parallel.

3. The fuel supply device of a marine burner according to claim 1 or 2, characterized in that: Two second delivery pumps are provided on the second delivery pipe, and the two second delivery pumps are arranged in parallel.

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