CN111810843A - Gas pressurizing station of marine dual-fuel engine - Google Patents
Gas pressurizing station of marine dual-fuel engine Download PDFInfo
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- CN111810843A CN111810843A CN202010799602.3A CN202010799602A CN111810843A CN 111810843 A CN111810843 A CN 111810843A CN 202010799602 A CN202010799602 A CN 202010799602A CN 111810843 A CN111810843 A CN 111810843A
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- pressure
- pry
- unit
- natural gas
- buffer tank
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
- F17D1/04—Pipe-line systems for gases or vapours for distribution of gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/005—Protection or supervision of installations of gas pipelines, e.g. alarm
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
- F17D5/08—Protection of installations or persons from the effects of high voltage induced in the pipe-line
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
The invention discloses a marine dual-fuel engine gas pressurizing station which comprises a pressurizing system, a recovery unit, a blowdown unit, a discharge unit and a component analysis unit, wherein the pressurizing system comprises a pressure stabilizing pry, an air inlet buffer tank, a compression unit, an air supply buffer tank and a drying unit which are sequentially connected, natural gas containing impurities enters the recovery tank of the recovery unit and is connected with a pressure regulator and then returns to the output end of the pressure stabilizing pry, and the utilization rate of the natural gas is improved. The drain such as steady voltage sled, each jar of body and drying unit links to each other through sewage pipes blowdown jar, and the respective mouth of releasing of above-mentioned equipment joins the back through the pipeline of releasing and links to each other with the bottom of the tower of releasing through the spark arrester respectively. The invention has compact structure, small occupied space, stable air pressure of the output high-pressure natural gas and pure components. The residual natural gas in the invention can be quickly emptied, the use safety of the invention is improved, and the high-pressure natural gas with reliable quality is delivered to the marine dual-fuel engine.
Description
Technical Field
The invention relates to a gas pressurizing station, in particular to a gas pressurizing station which integrates natural gas pressurizing, buffering and pressure stabilizing, emergency discharging, impurity discharging and component analysis and provides high-quality and high-pressure natural gas for a marine dual-fuel engine, and belongs to the technical field of marine dual-fuel engines.
Background
With the gradual implementation of energy structure adjustment and energy-saving emission-reducing strategies, natural gas as clean energy is widely developed in the field of ship power, and a marine dual-fuel (diesel engine + natural gas) engine is produced at the same time. The natural gas can be provided for the marine dual-fuel engine after being pressurized and purified, and at present, the marine dual-fuel engine gas pressurizing station has the defects of unstable gas supply pressure and low gas supply quality caused by the fact that natural gas impurities cannot be separated, so that the dual-fuel engine is unstable in work, the maximum power is reduced, even the problem of fire in a cylinder occurs, and the like. Therefore, the fuel gas pressurizing station for the marine dual-fuel engine is urgently needed to provide a high-quality natural gas source with stable gas pressure and pure components for the marine dual-fuel engine.
Disclosure of Invention
The invention aims to provide a fuel gas pressurizing station of a dual-fuel engine for a ship, which can improve the running stability and safety of the dual-fuel engine.
The invention is realized by the following technical scheme:
the utility model provides a marine dual fuel engine gas pressurization station, including pressurization system, recovery unit, blowdown unit, the unit of releasing and composition analysis unit, pressurization system includes the steady voltage sled that connects gradually through pipeline, the buffer tank of admitting air, the compression unit, supply buffer tank and drying unit, electronic stop valve, the flowmeter loops through pipeline and links to each other with steady voltage sled input, steady voltage sled output is passed through pipeline and is linked to each other with the buffer tank of admitting air, the buffer tank output of admitting air falls into two the tunnel and links to each other with the first compressor and the second compressor of compression unit respectively, the pipeline of the pure high-pressure natural gas output of first compressor and the pure high-pressure natural gas output of second compressor merges into all the way and gets into the supply buffer tank, the pure high-pressure natural gas output of supply buffer tank falls into two the tunnel and merges into all the way and links to each other with composition analysis unit's chromatographic analyzer and cartridge filter in proper order after first dry sled and the The rear part of the fuel tank is communicated to a marine dual-fuel engine fuel tank; the first compressor natural gas output end containing impurities and the second compressor natural gas output end containing impurities are combined into a whole and enter a recovery tank of a recovery unit through a recovery pipeline, and the output end of the recovery tank is connected with a pressure regulator of the recovery unit through the recovery pipeline and then returns to the output end of the pressure stabilizing pry; the pressure stabilizing pry, the air inlet buffer tank, the recovery tank, the air supply buffer tank, the first drying pry, the second drying pry and the respective drain outlets of the cylindrical filter are converged into a path through a drain pipeline to be connected with the drain tank of the drain unit; the pressure stabilizing pry, the air inlet buffer tank, the recovery tank, the air supply buffer tank, the first drying pry and the second drying pry are respectively connected with the bottom of the discharge tower of the discharge unit through the discharge pipeline in a manner of converging two paths.
The purpose of the invention is further realized by the following technical scheme:
furthermore, each input end and output end of the pressure stabilizing pry, the air inlet buffer tank, the compression unit, the air supply buffer tank, the drying unit and the component analysis unit are respectively provided with a ball valve.
Furthermore, the pressure of the input end of the pressure stabilizing pry is 0.2-0.4 Mpa, the pressure of the output end of the pressure stabilizing pry is 0.2-0.3 Mpa, the filtering precision is 10 micrometers, the pressure regulating precision is +/-2.5%, and the maximum flow is 7200 standard squares/hour. The natural gas pressure of first compressor and the input of second compressor is 0.2 ~ 0.4Mpa, and the output natural gas pressure of first compressor output and second compressor output is 1.6~1.8Mpa, and the air supply volume is 6000 standard side/hour.
Further, the water capacity of the air inlet buffer tank is 6.0m3The water pressure is 1.0 Mpa; the water capacity of the gas supply buffer tank is 10.0m3The water pressure was 2.5 MPa. The water volume of the recovery tank is 4.0m3The water pressure is 2.5 Mpa; the water volume of the sewage discharge tank is 1.0m3The water pressure was 0.1 MPa.
The invention integrates the pressurizing system, the recovery unit, the blowdown unit, the discharge unit and the component analysis unit, has compact structure, small occupied space, stable pressure of the output high-pressure natural gas and pure components. Two compressors of the pressurization system and two sets of drying skids of the drying unit are used one by one, so that the reliability of the invention is improved. The pressure stabilizing pry, the air inlet buffer tank, the recovery tank, the air supply buffer tank, the first drying pry and the second drying pry are respectively connected with the discharge tower of the discharge unit through the discharge pipe, so that residual natural gas in the gas release device can be quickly discharged when leakage or other sudden faults occur, and the use safety of the gas release device is improved. The gas chromatographic analyzer of the component analysis unit can automatically sample and analyze the high-pressure natural gas to be delivered to the marine dual-fuel engine, and the sampled data is delivered to the sample gas processing system and the detection and analysis system of the background through the signal transmission system for calculation and analysis and is fed back to the gas chromatographic analyzer for display, so that the reliability of the quality of the high-pressure natural gas delivered to the marine dual-fuel engine is further ensured.
The advantages and features of the invention will be illustrated and explained by the following non-restrictive description of preferred embodiments, which are given by way of example only with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
The invention is further illustrated by the following figures and examples.
As shown in figure 1, the invention comprises a pressurizing system 1, a recovery unit 2, a pollution discharge unit 3, a discharge unit 4 and a component analysis unit 5, wherein the pressurizing system 1 comprises a pressure stabilizing pry 11, an air inlet buffer tank 12, a compression unit 13, an air supply buffer tank 14 and a drying unit 15 which are sequentially connected through a conveying pipeline 10, an electric stop valve 101 and a flow meter 102 are sequentially connected with the pressure stabilizing pry input end 111 through the conveying pipeline 10 shown by a thick solid line in figure 1, a pressure stabilizing pry output end 112 is connected with the air inlet buffer tank 12 through the conveying pipeline 10, the air inlet buffer tank output end 121 is divided into two paths and respectively connected with a first compressor 131 and a second compressor 132 of the compression unit 13, the conveying pipelines 10 of a first compressor pure high-pressure natural gas output end 133 and a second compressor pure high-pressure natural gas output end 134 are combined into one path and introduced into the air supply buffer tank 14, and the air supply buffer tank pure high-pressure natural gas output end 141 is divided into two paths The prying bars 152 are combined into a path which is connected with the chromatographic analyzer 51 of the component analysis unit 5 in sequence and then led to the marine dual-fuel engine fuel tank through the cylinder type filter 52. The natural gas output end 135 of the first compressor containing impurities and the natural gas output end 136 of the second compressor containing impurities are combined into one path to enter the recovery tank 21 of the recovery unit 2 through the recovery pipeline 20 shown by the two-dot chain line in fig. 1, the recovery tank output end 211 returns to the pressure stabilizing pry output end 112 after the recovery pipeline 20 is connected with the pressure regulator 22 of the recovery unit 2, and the utilization rate of the natural gas is improved. The respective sewage outlets of the pressure stabilizing lever 11, the air inlet buffer tank 12, the recovery tank 21, the air supply buffer tank 14, the first drying lever 151, the second drying lever 152 and the barrel-type filter 52 are merged into a path through a sewage discharge pipeline 30 shown by a chain line in fig. 1 to be connected with a 3 sewage discharge tank 31 of a sewage discharge unit.
The respective discharge ports of the pressure stabilizing pry 11, the air inlet buffer tank 12, the recovery tank 21, the air supply buffer tank 14, the first drying pry 151 and the second drying pry 152 are converged into two paths through a discharge pipeline 40 shown by a thick dotted line in fig. 1, and the two paths are respectively connected with the bottom of the discharge tower 42 of the discharge unit 4 through a flame arrester 41.
The stabilizer bar 11 comprises two juxtaposed filters 113, a pressure regulator 114 and a stabilizer air rail 115 fixed to a stabilizer bar steel frame 112. First skid 151 and second skid 152 are identical in construction and include a heater 154, a circulating fan 155, a cooler 156 and a filter 157, each secured to a skid-type steel frame 153, and two parallel drying towers 158.
The pressure 111 of the input end of the pressure stabilizing pry is 0.2-0.4 Mpa, the pressure 112 of the output end of the pressure stabilizing pry is 0.2-0.3 Mpa, the filtering precision is 10 mu m, the pressure regulating precision is +/-2.5%, and the maximum flow is 7200 square/hour.
The input natural gas pressure of the first compressor 131 and the second compressor 132 is 0.2-0.4 Mpa, the output natural gas pressure of the first compressor 131 and the second compressor 132 is 1.6-1.8 Mpa, and the air supply amount is 6000 squares/hour.
The water capacity of the intake buffer tank 12 is 6.0m3The water pressure is 1.0 Mpa; the water capacity of the gas supply buffer tank 14 is 10.0m3The water pressure was 2.5 MPa. The water capacity of the recovery tank 21 was 4.0m3The water pressure is 2.5 Mpa; the water capacity of the drain tank 31 is 1.0m3The water pressure was 0.1 MPa.
The working process of the invention is as follows:
the urban pipeline natural gas with the air pressure of 0.2-0.4 Mpa and the flow rate of 6000 standard squares/hour sequentially enters the pressure stabilizing pry 11 through the electric stop valve 101 and the flow meter 102 in the direction shown by an arrow at the left end of the figure 1, is output from the pressure stabilizing pry 11 and then is divided into two paths through the air inlet buffer tank 12, and the two paths are respectively pressurized into pure high-pressure natural gas with the air pressure of 1.6-1.8 Mpa and the flow rate of 6000 standard squares/hour through the first compressor 131 and the second compressor 132 of the compression unit 13, and then are combined into one path after being output from the two compressors, after being stabilized in pressure by the gas supply buffer tank 14, the purified high-pressure natural gas is divided into two paths and respectively enters the two drying skids of the drying unit 15, and the purified high-pressure natural gas output from the drying unit 15 is analyzed by the chromatographic analyzer 51 of the component analysis unit 5 and filtered by the cylinder type filter 52 and then is conveyed to the fuel tank of the marine dual-fuel engine for use as shown by an arrow at the right end of fig. 1.
The natural gas that two compressors output contains impurity gets into recovery tank 21, through long-time the sediment, impurity accumulation is in recovery tank 21 bottom, and the natural gas after depositing impurity treatment in recovery tank 21 gets back to before pressure regulator 22 from recovery pipeline 20, steps down through pressure regulator 22, and 0.2 ~ 0.4Mpa is got back to the atmospheric pressure drop, merges with the natural gas of steady voltage sled 11 output and inputs to compression unit 13 all the way, repeats aforementioned follow-up process, continues to compress and dry the natural gas.
The natural gas impurities precipitated at the bottoms of the gas inlet buffer tank 12, the gas supply buffer tank 14, the recovery tank 21, the first drying pry 151 and the second drying pry 152 can be converged into one path through the sewage discharge pipeline 30 and concentrated into the sewage discharge tank 31 for concentrated discharge, so that the purity of the high-pressure natural gas input into the marine dual-fuel engine is improved, and the normal work of the dual-fuel engine is ensured.
When leakage or other sudden faults occur, the electric stop valve 101 is quickly closed, and natural gas discharged from the discharge ports of the pressure stabilizing pry 11, the first compressor 131, the second compressor 132, the air inlet buffer tank 12, the recovery tank 21, the air supply buffer tank 14, the first drying pry 151 and the second drying pry 152 is converged into two paths through a discharge pipeline 40 shown by a thick dotted line in fig. 1, is cooled through a flame arrester 41 and is discharged from a discharge tower 42, so that the natural gas in the invention is discharged, and the safety of the invention is ensured.
In addition to the above embodiments, the present invention may have other embodiments, and any technical solutions formed by equivalent substitutions or equivalent transformations fall within the scope of the claims of the present invention.
Claims (7)
1. A marine dual-fuel engine gas pressurizing station is characterized in that: the device comprises a pressurizing system, a recovery unit, a sewage discharge unit, a discharge unit and a composition analysis unit, wherein the pressurizing system comprises a pressure stabilizing pry, an air inlet buffer tank, a compression unit, an air supply buffer tank and a drying unit which are sequentially connected through a conveying pipeline, an electric stop valve and a flowmeter are sequentially connected with the input end of the pressure stabilizing pry through the conveying pipeline, the output end of the pressure stabilizing pry is connected with the air inlet buffer tank through the conveying pipeline, the output end of the air inlet buffer tank is divided into two paths which are respectively connected with a first compressor and a second compressor of the compression unit, the conveying pipelines of the pure high-pressure natural gas output end of the first compressor and the pure high-pressure natural gas output end of the second, the pure high-pressure natural gas output end of the gas supply buffer tank is divided into two paths which are respectively combined into one path through a first drying pry and a second drying pry of the drying unit and are sequentially connected with a chromatographic analyzer of the component analysis unit and then led to a fuel tank of the marine dual-fuel engine through a cylindrical filter; the first compressor natural gas output end containing impurities and the second compressor natural gas output end containing impurities are combined into a whole and enter a recovery tank of a recovery unit through a recovery pipeline, and the output end of the recovery tank is connected with a pressure regulator of the recovery unit through the recovery pipeline and then returns to the output end of the pressure stabilizing pry; the pressure stabilizing pry, the air inlet buffer tank, the recovery tank, the air supply buffer tank, the first drying pry, the second drying pry and the respective drain outlets of the cylindrical filter are converged into a path through a drain pipeline to be connected with the drain tank of the drain unit; the pressure stabilizing pry, the air inlet buffer tank, the recovery tank, the air supply buffer tank, the first drying pry and the second drying pry are respectively connected with the bottom of the discharge tower of the discharge unit through the discharge pipeline in a manner of converging two paths.
2. A marine dual fuel engine gas pressurizing station as defined in claim 1, further comprising: each input end and the output end of the pressure stabilizing pry, the air inlet buffer tank, the compression unit, the air supply buffer tank, the drying unit and the component analysis unit are respectively provided with a ball valve.
3. A marine dual fuel engine gas pressurizing station as defined in claim 1, further comprising: the pressure of the input end of the pressure stabilizing pry is 0.2-0.4 Mpa, the pressure of the output end of the pressure stabilizing pry is 0.2-0.3 Mpa, the filtering precision is 10 mu m, the pressure regulating precision is +/-2.5%, and the maximum flow is 7200 square/hour.
4. A marine dual fuel engine gas pressurizing station as defined in claim 1, further comprising: the natural gas pressure of first compressor and the input of second compressor is 0.2 ~ 0.4Mpa, and the natural gas pressure of first compressor and the output of second compressor is 1.6~1.8Mpa, and the air feed volume is 6000 standard square/hour.
5. A marine dual fuel engine gas pressurizing station as defined in claim 1, further comprising: the air pressure at the input end of the drying pry is 1.8-2.0 Mpa, and the flow of the treated natural gas is 6000 standard squares/hour.
6. A marine dual fuel engine gas pressurizing station as defined in claim 1, further comprising: the water volume of the air inlet buffer tank is 6.0m3The water pressure is 1.0 Mpa; air supply bufferThe water volume of the tank was 10.0m3The water pressure was 2.5 MPa.
7. A marine dual fuel engine gas pressurizing station as defined in claim 1, further comprising: the water volume of the recovery tank is 4.0m3The water pressure is 2.5 Mpa; the water volume of the sewage discharge tank is 1.0m3The water pressure was 0.1 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799602.3A CN111810843A (en) | 2020-08-11 | 2020-08-11 | Gas pressurizing station of marine dual-fuel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010799602.3A CN111810843A (en) | 2020-08-11 | 2020-08-11 | Gas pressurizing station of marine dual-fuel engine |
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| Publication Number | Publication Date |
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| CN111810843A true CN111810843A (en) | 2020-10-23 |
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| CN202010799602.3A Pending CN111810843A (en) | 2020-08-11 | 2020-08-11 | Gas pressurizing station of marine dual-fuel engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320671A (en) * | 2021-12-22 | 2022-04-12 | 中船动力镇江有限公司 | Natural gas pressurization system with adjustable flow |
-
2020
- 2020-08-11 CN CN202010799602.3A patent/CN111810843A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320671A (en) * | 2021-12-22 | 2022-04-12 | 中船动力镇江有限公司 | Natural gas pressurization system with adjustable flow |
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