Marine oil-gas dual-fuel burner

Abstract

The utility model discloses a marine oil-gas dual-fuel burner which comprises a fuel oil mechanism, a fuel gas mechanism, an air mechanism and an ignition assembly, the air mechanism comprises a shell, the two ends of the shell are divided into an air inlet end and a burning end, and the air inlet end of the shell is provided with an air inlet and an air inducing power mechanism; the fuel oil mechanism comprises a fuel oil pipe and a fuel oil distribution block, the fuel oil distribution block is located at the combustion end of the shell, a distribution block oil inlet and an oil spray nozzle are arranged on the fuel oil distribution block, the distribution block oil inlet is communicated with the oil spray nozzle through an oil inlet channel in the fuel oil distribution block, and the fuel oil pipe is connected with the fuel oil distribution block oil inlet; the fuel gas mechanism comprises a fuel gas pipe communicated with a fuel gas supply pipe outside the shell, the output end of the fuel gas pipe is connected with a fuel gas distribution header pipe, the fuel gas distribution header pipe is fixed to the fuel oil distribution block, a plurality of fuel gas distribution branch pipes are arranged on the periphery of the fuel gas distribution header pipe at intervals, and the outer end of each fuel gas distribution branch pipe extends outwards out of the shell. The combustor has the advantages of being compact in structure and high in combustion efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of marine dual-fuel burners (oil and gas). Background Technology

[0002] To conserve energy, reduce emissions, and minimize pollution, marine boilers are increasingly using dual-fuel burners that are compatible with both oil and gas. Oil and gas can respectively meet the emission regulations for different marine areas.

[0003] Currently, dual-fuel burners compatible with both oil and gas suffer from drawbacks such as complex piping structures, large size, and high manufacturing costs. For marine boilers, where installation space is limited, further optimization of the piping in dual-fuel burners to further reduce their size is also extremely important for marine dual-fuel burners. Utility Model Content

[0004] The technical problem to be solved by this utility model is to provide a marine dual-fuel burner with simple pipeline, compact structure and effectively reduced volume.

[0005] To solve the above problems, the technical solution adopted by this utility model is: a marine oil and gas dual-fuel burner, including: a fuel oil mechanism, a gas combustion mechanism, an air mechanism, and an ignition assembly. The air mechanism includes a housing, with the two ends of the housing divided into an air inlet end and a combustion end. The air inlet end of the housing is provided with an air inlet and an induced draft power mechanism. The fuel oil mechanism, the gas combustion mechanism, and the ignition assembly are all disposed inside the housing.

[0006] The fuel system includes a fuel pipe and a fuel distribution block. The fuel distribution block is located at the combustion end of the housing. The fuel distribution block is provided with a fuel inlet and a fuel injector. The fuel inlet is connected to the fuel injector through the fuel inlet channel inside the fuel distribution block. The output end of the fuel pipe is connected to the fuel inlet of the fuel distribution block, and the input end of the fuel pipe is connected to the fuel supply assembly outside the housing.

[0007] The gas system includes: a gas pipe, the inlet end of which is connected to a gas supply pipe outside the housing, the outlet end of which is connected to a gas distribution pipe, the gas distribution pipe being located inside the fuel distribution block and fixed to the fuel distribution block, and several gas distribution branch pipes arranged at intervals around the gas distribution pipe, the inner end of each gas distribution branch pipe being connected to the inside of the gas distribution port pipe, and the outer end of each gas distribution pipe extending outward from the housing.

[0008] The ignition assembly includes an ignition electrode, the ignition end of which extends through the gap between the gas distribution pipes to the top of the fuel injector.

[0009] Furthermore, in the aforementioned marine dual-fuel burner, the fuel distribution block is provided with two distribution block inlets and two fuel injectors. The fuel distribution block has two fuel inlet channels. The two distribution block inlets are respectively a first distribution block inlet and a second distribution block inlet. The two fuel injectors are respectively a first fuel injector and a second fuel injector. The two fuel inlet channels are respectively a first fuel inlet channel and a second fuel inlet channel. The first distribution block inlet is connected to the first fuel injector through the first fuel inlet channel, and the second distribution block inlet is connected to the second fuel injector through the second fuel inlet channel. The fuel pipe includes a first fuel pipe and a second fuel pipe. The output end of the first fuel pipe is connected to the first distribution block inlet, and the output end of the second fuel pipe is connected to the second distribution block inlet.

[0010] Furthermore, in the aforementioned marine dual-fuel burner, the fuel supply assembly includes: a fuel pump with a fuel pump inlet and a fuel pump outlet. The fuel pump inlet is connected to a fuel supply pipe, and the fuel pump outlet is equipped with a fuel outlet safety solenoid valve connected to a first fuel delivery pipe. The first fuel delivery pipe is connected to a heater, and the heater's output end is equipped with a heated fuel output pipe connected to an inlet control valve assembly.

[0011] The oil inlet control valve group is equipped with an oil inlet, a first oil outlet, a second oil outlet, and a return oil port. The heating output oil pipe is connected to the oil inlet of the valve group. The first oil outlet and the second oil outlet of the valve group are respectively equipped with a first oil outlet control valve and a second oil outlet control valve. The return oil port is equipped with a return oil pipe, and the return oil pipe is equipped with a return oil safety solenoid valve. The oil inlet and the return oil port of the valve group are in a normally open state. The return oil safety solenoid valve is used to connect to the return oil output pipeline.

[0012] The oil inlet control valve assembly is installed on the outer wall of the housing, and the input ends of the first gas pipe and the second gas pipe are connected to the first oil outlet control valve and the second oil outlet control valve, respectively.

[0013] Furthermore, in the aforementioned marine dual-fuel burner, the induced draft power mechanism is an induced draft fan.

[0014] Furthermore, in the aforementioned marine dual-fuel burner, an adjustable damper is provided on the air inlet.

[0015] Furthermore, in the aforementioned marine dual-fuel burner, the combustion end of the casing is provided with a flame stabilizer, and the flame stabilizer is further provided with an air distribution hood plate with air distribution holes. The air distribution hood plate is fixedly connected to the outer end of the fuel distribution block via an air distribution hood plate connecting support. The outer edge of the air distribution hood plate extends close to the inner wall of the flame stabilizer, and the first fuel injector and the second fuel injector both extend into the inner side of the air distribution hood plate. All fuel distribution branch pipes extend outward along the outer wall of the flame stabilizer and protrude from the casing.

[0016] Furthermore, in the aforementioned marine dual-fuel burner, a gas inlet pipe is provided on the shell, and a gas inlet pipe is provided at the inlet end of the gas pipe. The gas inlet pipe passes through the gas inlet pipe and is connected to the gas supply pipe.

[0017] Furthermore, in the aforementioned marine dual-fuel burner, a temperature probe for monitoring the internal temperature of the casing is installed on the casing.

[0018] Furthermore, in the aforementioned marine dual-fuel burner, a photoelectric tube for monitoring whether a flame has been established is provided on the casing, and the photoelectric tube is located near the combustion end of the casing.

[0019] The advantages of this utility model are: 1. It provides a marine dual-fuel burner capable of switching between gas and oil fuels. 2. The fuel fuel mechanism, gas fuel mechanism, and air mechanism are all integrated into a single housing, resulting in a compact structure; the gas distribution main pipe is located inside the fuel fuel distribution block and fixed to it, demonstrating high integration, a clever and compact structure, and reduced manufacturing costs. 3. The gas pipes deliver gas to each gas distribution branch pipe through the gas distribution main pipe, ensuring uniform gas distribution and significantly improving the uniformity and efficiency of gas combustion. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a marine oil and gas dual-fuel burner according to the present invention.

[0021] Figure 2 This is a schematic diagram of the gas pipe structure in a marine oil and gas dual-fuel burner according to the present invention.

[0022] Figure 3 This is a schematic diagram of the fuel distribution block in a marine oil and gas dual-fuel burner according to the present invention. Detailed Implementation

[0023] The present invention will now be described in further detail with reference to the accompanying drawings and preferred embodiments.

[0024] like Figure 1 , Figure 2 , Figure 3 As shown, a marine dual-fuel burner includes: a fuel oil mechanism 3, a gas combustion mechanism 4, an air mechanism 1, and an ignition assembly 5.

[0025] The air mechanism 1 includes a housing 11, which is divided into an air inlet end and a combustion end at both ends. The air inlet end of the housing 11 is provided with an air inlet 12 and an induced draft power mechanism. In this embodiment, the induced draft power mechanism is an induced draft fan 13. An adjustable damper 121 is provided on the air inlet 12. The fuel mechanism 3, the gas mechanism 4, and the ignition assembly 5 are all disposed in the housing 11.

[0026] The fuel system 3 includes a fuel pipe and a fuel distribution block 31. The fuel distribution block 31 is located at the combustion end of the housing 1 and has a fuel distribution block inlet and a fuel injector. In this embodiment, the fuel distribution block 31 has two fuel distribution block inlets and two fuel injectors, and two fuel inlet channels are provided inside the fuel distribution block 31. The two fuel distribution block inlets are a first fuel distribution block inlet 32 ​​and a second fuel distribution block inlet 33, the two fuel injectors are a first fuel injector 34 and a second fuel injector 35, and the two fuel inlet channels are a first fuel inlet channel 36 and a second fuel inlet channel 37. The first fuel distribution block inlet 32 ​​is connected to the first fuel injector 34 through the first fuel inlet channel 36, and the second fuel distribution block inlet 32 ​​is connected to the second fuel injector 35 through the second fuel inlet channel 37. The fuel pipe includes a first fuel pipe 38 and a second fuel pipe 39. The output end of the first fuel pipe 38 is connected to the first fuel distribution block inlet 32, and the output end of the second fuel pipe 39 is connected to the second fuel distribution block inlet 33. The inlet ends of the first fuel line 38 and the second fuel line 39 are both connected to the fuel supply assembly outside the housing 11.

[0027] The gas system 4 includes a gas pipe 41, the inlet of which is connected to a gas supply pipe outside the housing 11. The outlet of the gas pipe 41 is connected to a gas distribution main pipe 42, which is located inside and fixed to the fuel distribution block 31. Several gas distribution branch pipes 43 are spaced around the gas distribution main pipe 42, each branch pipe 43 having its inner end connected to the interior of the gas distribution main pipe 42, and each branch pipe 43 extending outwards at an angle beyond the housing 11. A housing gas inlet pipe 111 is provided on the housing 11, and a gas inlet pipe 411 is provided at the inlet end of the gas pipe 41. The gas inlet pipe 411 passes through the housing gas inlet pipe 111 and connects to the gas supply pipe. This pipe connection uses a double-pipe structure to prevent gas leakage. The gas supply pipe... Figure 1 , Figure 2 The document does not specify that the gas supply pipe is connected to a gas storage facility such as a gas storage tank.

[0028] The ignition assembly 5 includes an ignition electrode 51, the ignition end of which extends through the gap between the gas distribution branch pipes 43 to the top of the fuel injector.

[0029] The fuel supply assembly includes a fuel pump 6, which has a fuel pump inlet 61 and a fuel pump outlet 62. The fuel pump inlet 61 is connected to a fuel delivery pipeline, which is connected to a fuel storage mechanism, such as a fuel tank. A fuel outlet safety solenoid valve 621 is installed on the fuel pump outlet 62 and is connected to a first fuel delivery pipe 622. The first fuel delivery pipe 622 is connected to a heater assembly 623. In this embodiment, the heater assembly includes two heaters connected in series. The output end of the heater assembly 623 has a heated output oil pipe 624, which is connected to an inlet control valve group 63.

[0030] The oil inlet control valve group 63 is provided with an oil inlet, a first oil outlet, a second oil outlet, and a return oil port. The heating output oil pipe 624 is connected to the oil inlet of the valve group. The first oil outlet and the second oil outlet of the valve group are respectively provided with a first oil outlet control valve 631 and a second oil outlet control valve 632. The return oil port is provided with a return oil pipe 633, and the return oil pipe 633 is provided with a return oil safety solenoid valve 6331. The oil inlet and the return oil port of the valve group are in a normally open state through the oil inlet control valve group 63. The return oil safety solenoid valve 6331 is connected to the return oil output pipe that delivers fuel back to the fuel storage mechanism.

[0031] The fuel inlet control valve assembly 63 is installed on the outer wall of the housing 11, and the input ends of the first fuel pipe 38 and the second fuel pipe 39 are respectively connected to the first fuel outlet control valve 631 and the second fuel outlet control valve 632.

[0032] To improve combustion efficiency and refine the flame shape, in this embodiment, a flame stabilizer 2 is provided at the combustion end of the housing 11. The flame stabilizer 2 also includes a distribution plate 7 with air distribution holes. The distribution plate 7 is fixedly connected to the outer end of the fuel distribution block 31 via a distribution plate connecting support 71. The outer edge of the distribution plate 7 extends close to the inner wall of the flame stabilizer 2. The first fuel injector 34 and the second fuel injector 35 both extend into the inner side of the distribution plate 7. All fuel distribution branch pipes 43 extend outwards along the outer wall of the flame stabilizer 2 and protrude from the housing 11.

[0033] In this embodiment, a temperature probe 112 for monitoring the internal temperature of the housing 11 is provided on the housing 11. The temperature probe 112 can monitor the internal temperature of the housing in real time. A phototube 113 for monitoring whether a flame has been established is also provided on the housing 11, and the phototube 113 is located near the combustion end of the housing. The placement of the phototube 113 facilitates the observation of whether a flame has been established.

[0034] The working principle is as follows: The marine oil and gas dual-fuel burner described in this application has an oil fuel mode and a gas fuel mode.

[0035] First, let's discuss the fuel system. Fuel from the fuel storage mechanism enters the fuel pump 6 via the fuel delivery pipeline, then sequentially passes through the fuel pump inlet 61, fuel pump outlet 62, fuel outlet safety solenoid valve 621, and the first fuel delivery pipe 622 to the heater assembly 623 for heating. It then passes through the heated output fuel pipe 624, the fuel inlet control valve group 63, and finally through the first fuel pipe 38 and the first distributor block inlet 32 ​​to the first fuel injector 34. A portion of the fuel in the fuel inlet control valve group 63 also flows back through the return fuel pipe 633 and the return fuel safety solenoid valve 6331, thus returning the fuel to the fuel storage mechanism. The first fuel injector 34 injects fuel, which is then ignited by the ignition electrode 51 and combusted. Air, under the action of the induced draft fan 13, enters the combustion end inside the housing 11 through the air inlet 12, then moves outward through the air distribution holes on the air distribution shroud 7 and through the gap between the air distribution shroud 7 and the flame stabilizer 2, thus providing combustion-supporting gas for ignition and combustion. Air diffuses in an orderly manner under the guidance of the air distribution panel 7, thereby promoting complete combustion of fuel.

[0036] When a high-fire combustion mode is required, fuel flows through the heated output fuel pipe 624 and the fuel inlet control valve assembly 63, entering the first fuel pipe 38 and the second fuel pipe 39 respectively. It then flows through the first distributor block inlet 32 ​​and the first fuel inlet channel 36 into the first fuel injector 34, and through the second distributor block inlet 33 and the second fuel inlet channel 37 into the second fuel injector 35. The first fuel injector 34 and the second fuel injector 35 together inject fuel to achieve the high-fire combustion mode.

[0037] Next, let's discuss the gas-fired mode. Gas from the gas storage unit enters the gas inlet pipe 411 via the gas supply pipe, then flows through the gas pipe 41 to the gas distribution main pipe 42. The gas in the gas distribution main pipe 42 is distributed to each gas distribution branch pipe 43, and the gas in the gas distribution branch pipes 43 is ejected outwards. Gas combustion is initiated by igniting the fuel through the ignition electrode 51.

[0038] The advantages of this utility model are: 1. It provides a marine dual-fuel burner that can switch between combustion of gas and oil. 2. The fuel oil mechanism, gas oil mechanism, and air mechanism are all integrated into a single housing, resulting in a compact structure; the gas distribution main pipe is located inside the fuel oil distribution block and fixed to it, leading to high integration, a clever and compact structure, and reduced manufacturing costs. 3. The gas pipes deliver gas to each gas distribution branch pipe through the gas distribution main pipe, ensuring uniform gas distribution and significantly improving the uniformity and efficiency of gas combustion.

Claims

1. A marine oil-gas dual fuel burner comprising: The fuel mechanism, gas mechanism, air mechanism and ignition assembly are characterized in that the air mechanism comprises a shell, two ends of the shell are divided into an air inlet end and a combustion end, the air inlet end of the shell is provided with an air inlet and an air inlet power mechanism; the fuel mechanism, gas mechanism and ignition assembly are arranged in the shell; The fuel mechanism comprises a fuel pipe and a fuel distribution block, the fuel distribution block is located at the combustion end of the shell, the fuel distribution block is provided with a distribution block oil inlet and an oil nozzle, the distribution block oil inlet is communicated with the oil nozzle through an oil inlet channel in the fuel distribution block, an output end of the fuel pipe is connected with the distribution block oil inlet, and an input end of the fuel pipe is communicated with a fuel supply assembly outside the shell; The gas mechanism comprises a gas pipe, an input end of the gas pipe is communicated with a gas supply pipe outside the shell, an output end of the gas pipe is connected with a gas distribution main pipe, the gas distribution main pipe is located at an inner side of the fuel distribution block and fixed with the fuel distribution block, a plurality of gas distribution branch pipes are arranged at intervals around the gas distribution main pipe, an inner end of each gas distribution branch pipe is communicated with an inner part of the gas distribution main pipe, and an outer end of each gas distribution branch pipe extends out of the shell; The ignition assembly comprises an ignition electrode, an ignition end of the ignition electrode extends into an upper part of the oil nozzle through a gap between the gas distribution pipes.

2. A marine oil-gas dual fuel burner according to claim 1, characterized in that: The fuel distribution block is provided with two distribution block oil inlets and two oil nozzles, the fuel distribution block is provided with two oil inlet channels, the two distribution block oil inlets are a first distribution block oil inlet and a second distribution block oil inlet, the two oil nozzles are a first oil nozzle and a second oil nozzle, the two oil inlet channels are a first oil inlet channel and a second oil inlet channel, the first distribution block oil inlet is communicated with the first oil nozzle through the first oil inlet channel, and the second distribution block oil inlet is communicated with the second oil nozzle through the second oil inlet channel; the fuel pipe comprises a first fuel pipe and a second fuel pipe, an output end of the first fuel pipe is connected with the first distribution block oil inlet, and an output end of the second fuel pipe is connected with the second distribution block oil inlet.

3. A marine oil-gas dual fuel burner according to claim 2, characterized in that: The fuel supply assembly comprises an oil pump, the oil pump is provided with an oil pump oil inlet and an oil pump oil outlet, the oil pump oil inlet is connected with the fuel supply pipe, the oil pump oil outlet is provided with an oil outlet safety electromagnetic valve, the oil outlet safety electromagnetic valve is connected with a first oil pipe, the first oil pipe is connected to a heater, an output end of the heater is provided with a heating output oil pipe, and the heating output oil pipe is connected to an oil inlet control valve group, The oil inlet control valve group is provided with a valve group oil inlet, a valve group first oil outlet, a valve group second oil outlet and an oil return port, the heating output oil pipe is connected with the valve group oil inlet, the valve group first oil outlet and the valve group second oil outlet are respectively provided with a first oil outlet control valve and a second oil outlet control valve, the oil return port is provided with an oil return pipe, the oil return pipe is provided with an oil return safety electromagnetic valve, the valve group oil inlet and the oil return port are in a constant communication state, and the oil return safety electromagnetic valve is used to be connected with an oil return output pipeline; The oil inlet control valve group is installed on an outer wall of the shell, input ends of the first gas pipe and the second gas pipe are communicated with the first oil outlet control valve and the second oil outlet control valve respectively.

4. An oil-gas dual fuel burner for marine use according to claim 1, characterized in that: The air inlet is provided with an air door with adjustable opening degree.

5. A marine oil-gas dual fuel burner according to claim 1, characterized in that: The air inlet is provided with an air door with adjustable opening degree.

6. An oil-gas dual fuel burner for marine use according to claim 1, characterized in that: The combustion end of the shell is provided with a flame stabilizer, and the flame stabilizer is further provided with a wind distribution cover plate with wind distribution holes, the wind distribution cover plate is fixedly connected to the outer end of the fuel distribution block through a wind distribution cover plate connecting support, the outer edge of the wind distribution cover plate extends close to the inner wall of the flame stabilizer, and the first and second oil injection nozzles both extend into the inner side of the wind distribution cover plate; all the fuel gas distribution branch pipes extend outward along the outer wall of the flame stabilizer and out of the shell.

7. A marine oil-gas dual fuel burner according to claim 1, characterized in that: The shell is provided with a shell fuel gas input connector, the input end of the fuel gas pipe is provided with a fuel gas inlet connector, and the fuel gas inlet connector is connected with the fuel gas supply pipe through the shell fuel gas input connector.

8. An oil-gas dual fuel burner for marine use according to claim 1, characterized in that: The shell is provided with a temperature measuring probe for monitoring the temperature inside the shell.

9. An oil-gas dual fuel burner for marine use according to claim 1, characterized in that: The shell is provided with a photoelectric tube for monitoring whether the flame is established, and the photoelectric tube is arranged close to the combustion end of the shell.

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