CN117627729A - Multifunctional gas pressure regulating-compressing-generator - Google Patents
Multifunctional gas pressure regulating-compressing-generator Download PDFInfo
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- CN117627729A CN117627729A CN202210965692.8A CN202210965692A CN117627729A CN 117627729 A CN117627729 A CN 117627729A CN 202210965692 A CN202210965692 A CN 202210965692A CN 117627729 A CN117627729 A CN 117627729A
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- pressure
- gas
- cylinder
- pressure regulating
- natural gas
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims abstract description 120
- 239000003345 natural gas Substances 0.000 claims abstract description 62
- 239000007789 gas Substances 0.000 claims abstract description 51
- 230000001105 regulatory effect Effects 0.000 claims abstract description 36
- 230000006835 compression Effects 0.000 claims abstract description 24
- 238000007906 compression Methods 0.000 claims abstract description 24
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 230000005611 electricity Effects 0.000 claims abstract description 5
- 230000033001 locomotion Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 238000010248 power generation Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 4
- 238000010438 heat treatment Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 239000003570 air Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000011234 economic evaluation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007363 regulatory process Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B7/00—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders
- F01B7/02—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons
- F01B7/14—Machines or engines with two or more pistons reciprocating within same cylinder or within essentially coaxial cylinders with oppositely reciprocating pistons acting on different main shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B23/00—Adaptations of machines or engines for special use; Combinations of engines with devices driven thereby
- F01B23/10—Adaptations for driving, or combinations with, electric generators
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The invention discloses a multifunctional gas pressure regulating-compressing-generator, which utilizes the pressure difference when the high-pressure long gas (10.0 MPa) in a natural gas transmission station and a city gate station is converted into high-pressure town gas (4.0 MPa) to regulate pressure, expands and works, pushes a pressure regulating cylinder piston to move, drives the compression cylinder piston to move through a transmission mechanism such as a connecting rod, a crankshaft and the like when the expansion pressure regulating is completed, compresses the town secondary high-pressure natural gas (1.6 MPa) to 4.0MPa, and increases the temperature of the latter; the two natural gases are finally converged at one place, the pressure is the same, and the temperature of the two natural gases is maintained at normal temperature. Heating heat tracing cost can be saved in winter. In spring, summer and autumn, the machine type can be used for producing compressed air or other compressed gases, and can also be directly used for generating electricity.
Description
Technical Field
The invention relates to a conversion device for regulating pressure, compressing and generating power of natural gas from a natural gas transmission station and a door station. And can be extended to the pressure energy transmission and power generation scenes of any two kinds of compressible gases in other industries.
Background
At present, in various domestic urban gas companies and gas transmission stations and gate stations of medium petroleum, medium petrochemical and medium sea oil, a pressure regulating valve (pressure regulator) is generally adopted for natural throttling, expansion and pressure reduction, so that not only is a great deal of pressure energy contained in the natural gas wasted, but also the temperature of the natural gas is reduced, and according to the prior operation experience, the temperature of the natural gas is reduced by about 4 ℃ after the pressure is regulated to be 1.0 MPa. In other words, the natural gas temperature of the domestic natural gas valve station 10.0MPa drops by about 24 ℃ when the pressure is regulated to 4.0MPa. When the ambient temperature and the gas transmission temperature are low in winter, the natural air temperature is further greatly reduced after the pressure is regulated by the door station, and the valve instrument or the part is easily blocked by ice. Therefore, most of domestic regional gate stations need to build boiler room heating power pipelines, heat tracing is supplemented for natural gas pipelines, a large amount of heat energy is consumed, and because of building boiler rooms, occupied area is increased, building cost is increased, and operation cost is greatly increased. Through the technology, when the pressure of the high-pressure long-distance natural gas (10.0 MPa) is regulated to be town high-pressure natural gas (4.0 MPa), the expansion work of the natural gas can be effectively utilized and converted into heat energy, the temperature of the natural gas is maintained basically unchanged, the heat energy is consumed without additionally constructing a boiler room, and the operation benefit of a gas company is greatly increased. In spring, summer and autumn, the pressure energy of the natural gas can be converted into the pressure energy of other gases for producing compressed air or other compressed gases, or the pressure energy of the natural gas is directly used for generating electricity.
Disclosure of Invention
In order to solve the technical problems, the invention provides a multifunctional gas pressure regulating-compressing-generator, which is provided with four rows of piston type cylinders which are horizontally arranged, wherein the left two rows of the piston type cylinders are pressure regulating cylinders, the right two rows of the piston type cylinders are compression cylinders, the volumes of the two rows of the compression cylinders are the same, and the volume of the compression cylinders is 2 times that of the compression cylinders; each cylinder is internally provided with a sealing piston which divides the cylinder into two sealing cavities; each sealing cavity is provided with an air inlet automatic check valve and an air outlet automatic check valve, an air inlet valve is connected with an air inlet buffer tank, an air outlet valve is connected with an air outlet buffer tank, each row of cylinders is connected with a crankshaft through a piston rod, a cross head and a connecting rod, and four rows of cylinders share a crankshaft main shaft but the crank angles of each row of cylinders form an included angle of 90 degrees; the pressure regulating cylinder air inlet pipe is connected with a long-distance pipeline of a natural gas transmission station or a gate station, and the two air inlet valves are automatically switched through an automatic reversing valve to control the pressure regulating cylinder piston to move leftwards or rightwards; the ratio of the stroke volume of the pressure regulating cylinder piston to the clearance volume is designed to be 2.5 times. After expansion pressure regulation, the natural gas discharge pressure is 4.0MPa. The natural gas passes through the pressure regulating cylinder, drives the piston of the pressure regulating cylinder and the connecting rod, drives the crankshaft to move, and drives the piston of the compression cylinder to move; the two rows of compression cylinders on the right are the same as those of a common piston compressor; the movement direction of the piston is opposite to that of the pressure regulating cylinder; the air inlet of the compression cylinder is connected with a natural gas pipeline of 1.6MPa in the natural gas valve station and the gas transmission station, after compression, the compression ratio is set to be 2.5, the compression ratio is the ratio of the stroke volume of the piston to the clearance volume of the cylinder, and the discharge pressure is 4.0MPa; the discharge pressure is the same as that of the pressure regulating cylinder, but the temperature of the natural gas is higher than that of the natural gas discharged by the pressure regulating cylinder; and merging the outlets of the compression cylinder and the pressure regulating cylinder to obtain natural gas at normal temperature of 4.0MPa.
In spring, summer and autumn, when natural gas does not need heat tracing, the compressed air cylinder can be used for producing high-pressure gas such as compressed air, oxygen, nitrogen and the like. The machine can also be connected with a gearbox, a coupling and a generator to directly generate electricity.
Drawings
FIG. 1 is a schematic diagram of a system for a multi-function gas pressure regulating-compression-generator according to the present invention
FIG. 2 is a schematic plan view of a multifunctional gas pressure regulating-compressing-generator according to the present invention
Detailed Description
The pressure difference when the long-distance high-pressure natural gas (10.0 MPa) is conveyed to the town high-pressure natural gas (4.0 MPa) by the natural gas conveying station and the city gate station is utilized to push the piston of the pressure regulating cylinder, the connecting rod and the crankshaft to move and drive the piston of the compression cylinder to move, so that the low-pressure natural gas (1.6 MPa) is pressurized and heated, and finally, the two natural gas pressures are the same, the temperature changes are opposite, and the mixed natural gas is converted into 4.0MPa normal-temperature natural gas for output.
The product is mainly technically characterized in that the product is not driven by a prime motor, and the power of the product is the pressure difference of natural gas. The inlet end is a high-pressure gas source pipeline (10.0 MPa) of a natural gas transmission station and a city gate station, and the outlet end is a city pipeline network high-pressure pipeline (4.0 MPa) downstream of the natural gas transmission station and the city gate station. There is a large pressure difference between the inlet and outlet ends. The natural gas pressure regulating compressors are divided into four rows (shown in a schematic plan view). The left two columns are voltage regulating columns and are also active power. The gas of 10.0MPa enters the first row of cylinders 1-1 (3-1) of the pressure regulating compressor to push the piston to move in the direction of 1-2 (3-2) in the sealed volumetric cylinder, so as to drive the piston rod, the connecting rod and the crankshaft mechanism to move, and the crankshaft drives the piston rods of the second row and the fourth row to move. Taking the first row as an example, as the piston moves from the starting point to the ending point, the volume of the cylinder 1-1 increases by a certain multiple (the tentative multiple is 2.5 in design), the gas pressure is reduced by 2.5 times the pressure of the high-pressure gas source (approximate when temperature change is not considered), and the natural gas pressure is reduced to 4.0MPa after expansion by 10.0 MPa. The first column is now completed with a single pass. At the next moment, 10.0MPa gas on the inlet side is controlled to enter the cylinder from the cylinder 1-2 through the reversing valve, the piston is pushed to move towards the cylinder 1-1, the pressure of the 10.0MPa gas is reduced during expansion, and meanwhile 4.0MPa gas in the cylinder 1-1 is pushed to be discharged to a downstream pipe network. When the piston moves to the end (start of one cycle), 4.0MPa of gas in the cylinder 1-1 is completely discharged. The gas pressure in cylinder 1-2 was reduced to 4.0MPa at 10.0 MPa. The first row of pistons complete a cyclic reciprocating motion, the connecting rod pushes the crankshaft mechanism to complete a circular motion, and accordingly, the natural gas in the first row of cylinders completes two (the first cycle is one) expansion and depressurization processes. The pressure was reduced from 10.0MPa to 4.0MPa. Therefore, the first column is called a voltage regulator column. The third column is identical to the first column. But the bell crank orientations differ by 90 degrees.
At the same time, the second row and the fourth row of piston rods are driven to reciprocate in the cylinders along with the circular motion of the crankshaft. In order to balance the inertia force of the pressure-regulating compressor, the movement direction of the pistons in the second row and the fourth row is always opposite to that of the pistons in the first row and the third row. And the intake pressure and the exhaust pressure of the second bank and the fourth bank cylinders are the same. Therefore, only the second column is described as an example.
In the second bank of cylinders, the piston is moved from cylinder 2-2 to cylinder 2-1, as opposed to the first bank, during initial movement. Cylinder 2-2 is the suction process, and 1.6MPa natural gas enters cylinder 2-2 from intake port 4. When the piston moves to the end of cylinder 2-1, the inspiration is completed. The piston completes the first single pass. At the next moment, when the piston moves towards the cylinder 2-2, the natural gas with the pressure of 1.6MPa is compressed, the proportion is designed to be 2.5, and when the piston moves to the end point of the cylinder 2-2, the compression is completed, the natural gas with the pressure of 1.6MPa is increased to 4.0MPa, and then the natural gas is discharged out of the cylinder. The piston completes the first cycle.
The discharge pressure of the second bank cylinder is the same as the discharge pressure of the first bank cylinder, and is 4.0MPa. May meet at the outlet. In contrast, the first line is expansion pressure regulation, where natural gas is not only reduced in pressure but also in temperature. While the second train of natural gas is compressed and both pressure and temperature rise. After merging, the temperature of the two gases will neutralize. Can ensure that the natural gas can not be greatly cooled due to pressure regulation. The operating conditions of the pipeline are improved.
The fourth bank of cylinders and the second bank function and process are identical except that the bell crank orientations differ by 90 degrees.
The pressure regulating compressor does not need to consume external energy except for the instrument wind needed by the reversing valve.
The pressure regulating compressor has 4 sets of air inlet reversing valves (or 8), 4 rows of double-acting cylinders, 8 inlets, 8 outlets, 4 closed cylinders, 4 pistons, 4 sets of connecting rod-piston mechanisms and 1 set of main shaft. The structure is similar to a piston compressor. But it has no prime mover.
The natural gas temperature is basically unchanged, and the natural gas is prevented from being greatly cooled in the pressure regulating process.
When the natural gas temperature in the door station or the gas transmission station is normal after winter, the pipeline is not required to be heated, and at the moment, the compressed air or other compressed gases can be produced by utilizing the compression cylinder of the machine. The pressure energy of the natural gas is converted into other energy sources for storage or utilization. The machine may convert the pressure energy of one compressible gas into the pressure energy of another compressible gas. The kind of gas is not limited (except liquefied gas in a saturated state). The working pressure of the gas is not limited. Specific dimensions of the equipment need to be designed specifically when the gas type and pressure change.
The machine can also be connected with a gearbox, a coupling and a generator to directly generate electricity.
The product is specifically manufactured, and the product is authorized to a compressor factory by the inventor to finish sample production and perform performance test and economic evaluation. The main application fields are the gate station and the gas transmission station of the natural gas company. The product has mature performance and economic value, can be commercially operated, and can be put into practice after being subjected to feasibility project analysis and design by cooperation with a gas company or a petroleum company.
Claims (4)
1. A multifunctional gas pressure regulating-compressing-generator, characterized in that: the machine has four rows of piston cylinders arranged horizontally, the left two rows are pressure regulating cylinders (driving cylinders), the right two rows are compression cylinders (working cylinders), the volumes of the left two rows are the same (V), the volumes of the right two rows are the same (2V), but the volumes of the right two rows of compression cylinders are 2 times that of the left pressure regulating cylinder; each cylinder is internally provided with a sealing piston which divides the cylinder into two sealing cavities; each sealing cavity is provided with an air inlet automatic one-way valve and an air outlet automatic one-way valve, an air inlet valve is connected with an air inlet buffer tank, an air outlet valve is connected with an air outlet buffer tank, each row of cylinders is connected with a crankshaft through a piston rod, a cross head and a connecting rod, four rows of cylinders share a crankshaft main shaft, at the initial moment, a first row of cylinder bellcrank is positioned in the 0-degree direction of the crankshaft, a second row of cylinders is positioned in the 180-degree direction, a third row of cylinders is positioned in the 90-degree direction, a fourth row of cylinders is positioned in the 270-degree direction, and the four rows of cylinder bellcranks are staggered by 90-degree angles to avoid jamming in the running process; the pressure regulating cylinder air inlet pipe is connected with a long-distance pipeline of a natural gas transmission station or a gate station, and the two air inlet valves are automatically switched through an automatic reversing valve to control the pressure regulating cylinder piston to move leftwards or rightwards; the ratio of the stroke volume of the pressure regulating cylinder piston to the clearance volume is designed to be 2.5 times. After expansion pressure regulation, the natural gas discharge pressure is 4.0MPa.
2. The multifunctional gas pressure regulating-compressing-generator as recited in claim 1, wherein natural gas passes through the pressure regulating cylinder, drives the pressure regulating cylinder piston, the connecting rod, drives the crankshaft to move, and the crankshaft drives the compressing cylinder piston to move; the two rows of compression cylinders on the right are the same as those of a common piston compressor; the movement direction of the piston is opposite to that of the pressure regulating cylinder; the air inlet of the compression cylinder is connected with a natural gas pipeline of 1.6MPa in the natural gas valve station and the gas transmission station, after compression, the compression ratio is set to be 2.5, the compression ratio is the ratio of the stroke volume of the piston to the clearance volume of the cylinder, and the discharge pressure is 4.0MPa; the discharge pressure is the same as that of the pressure regulating cylinder, but the temperature of the natural gas is higher than that of the natural gas discharged by the pressure regulating cylinder; and merging the outlets of the compression cylinder and the pressure regulating cylinder to obtain natural gas at normal temperature of 4.0MPa.
3. The multifunctional gas pressure regulating-compressing-generator is typically described by using natural gas pressure energy as driving power, and the working medium in the compressing cylinder can be natural gas, compressed air or other gases. With this apparatus, compressed air or other types of compressed gas can be produced. Likewise, the working medium in the pressure regulating cylinder may be other gases. The machine can convert the pressure energy of one gas into the pressure energy of another gas. The type of the gas is not limited, the working pressure of the gas is not limited, and the equipment application industry and the scene are not limited.
4. The machine main shaft can be used for generating electricity after being connected with a gearbox, a coupling and a generator. Since the latter is a mature kit, it is not specifically illustrated and described herein. The machine has three functions of gas pressure regulation, gas compression and gas power generation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210965692.8A CN117627729A (en) | 2022-08-12 | 2022-08-12 | Multifunctional gas pressure regulating-compressing-generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210965692.8A CN117627729A (en) | 2022-08-12 | 2022-08-12 | Multifunctional gas pressure regulating-compressing-generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117627729A true CN117627729A (en) | 2024-03-01 |
Family
ID=90016795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210965692.8A Pending CN117627729A (en) | 2022-08-12 | 2022-08-12 | Multifunctional gas pressure regulating-compressing-generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117627729A (en) |
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2022
- 2022-08-12 CN CN202210965692.8A patent/CN117627729A/en active Pending
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