Gas power generation system with light gas pressurization centrifugal separation device

Abstract

The invention discloses a gas power generation system with a light gas pressurization centrifugal separation device, and relates to the technical field of power generation, in particular to a gas power generation technology. Comprising a light gas pressurization centrifugal separation device; the light gas pressurization centrifugal separation device comprises a gas channel serving as a mixed gas channel; the mixed gas channel is provided with a mixed gas inlet for introducing mixed gas and a communication port for discharging high-molecular-weight gas, and the communication port is positioned on the outer side in the mixed gas channel; the device further comprises a gas centrifugal system and a gas supercharging device, and a gas inlet of the gas supercharging device is a connector used for being connected with a mixed gas source. An exhaust port of the gas supercharging equipment is connected to the mixed gas inlet; the gas supercharging equipment is provided with a gas outlet for maintaining a small molecule gas flow channel to exhaust gas outwards; and the small molecule gas flow channel is connected to the gas generator.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of power generation, in particular to the technical field of gas power generation. BACKGROUND

[0002] The relatively small molecular weight gas includes methane, hydrogen, helium, carbon monoxide, etc. The relatively large molecular weight gas includes nitrogen, oxygen, carbon dioxide, etc.

[0003] Gas separation is of great significance in industry and life.

[0004] Traditional gas separation technologies often use low-temperature liquefaction separation, molecular sieve, semi-permeable membrane, etc. These technologies generally have problems such as complex equipment, small gas processing capacity, high energy consumption, etc.

[0005] Taking methane as an example, methane is not only ubiquitous but also has a high content in coal seams, seabed, sludge, chemical waste gas, etc.

[0006] Methane with a concentration of more than 6% is combustible and can be used as fuel for internal combustion engine power generation. However, low-concentration (less than 6% concentration) methane is difficult to burn and is difficult to be used as fuel by gas generators.

[0007] In addition, the content of low-concentration methane in the environment and industry is much higher than that of high-concentration methane.

[0008] The greenhouse effect of methane (gas) is 120 times that of carbon dioxide. Although methane will react to produce carbon dioxide in the atmosphere over time, even after 20 years of emission, the warming effect of each kilogram of methane is 84 times that of carbon dioxide, and after 100 years, it is still 28 times that of carbon dioxide. Methane has a great impact on global warming. Although the concentration of methane in the atmosphere is much lower than that of carbon dioxide, its ability to absorb heat is more than 80 times that of carbon dioxide, which is equivalent to wrapping the earth with a stronger "thermal underwear", leading to more and more obvious greenhouse effect. In addition, the warming potential value of methane is 21 times that of carbon dioxide, although it accounts for a relatively small proportion in greenhouse gas emissions, but its influence on warming is relatively large.

[0009] The existing technologies for increasing the concentration of methane mainly include cooling liquefaction technology, molecular sieve technology, and permeable membrane technology. These technologies generally have problems such as high equipment cost, small gas processing capacity, large process energy consumption, and the need to regularly replace expensive consumables, etc.

[0010] There is a need to seek a high-efficiency, low-cost, long-service-life, consumable-free, and large-gas-treatment-capacity methane concentration increasing technology. Through this technology, the low-concentration methane concentration is further increased to the power generation concentration technology (including but not limited to gas generator technology, metal catalytic oxidation RTO technology), which is one of the key technologies to solve the energy problem and the methane greenhouse effect problem. SUMMARY

[0011] This section is intended to summarize some aspects of the embodiments of the present application and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of the specification to avoid obscuring the purpose of this section, the abstract and the title, and such simplifications or omissions cannot be used to limit the scope of the present application.

[0012] In view of the problems existing in the prior art, the present application is proposed.

[0013] To solve the above technical problems, the present application provides the following technical solutions.

[0014] The gas power generation system with a light gas pressurization centrifugal separation device, characterized in that it comprises a light gas pressurization centrifugal separation device;

[0015] The light gas pressurization centrifugal separation device comprises a gas passage as a mixed gas passage;

[0016] The mixed gas passage is provided with a mixed gas inlet for introducing mixed gas, and a communication port for discharging large molecular weight gas, the communication port being located outside the mixed gas passage;

[0017] Further comprising a gas centrifugal system, the gas centrifugal system comprising a rotating mechanism, and a baffle for pushing the gas to rotate, referred to as a rotating baffle, arranged on the rotating mechanism;

[0018] The rotating baffle rotates around the middle part of the mixed gas passage;

[0019] Further comprising a gas flow passage as a small molecular gas flow channel along the direction of gas flow in the mixed gas passage;

[0020] The small molecular gas flow channel is located in the middle part of the mixed gas passage;

[0021] The small molecular gas flow channel is arranged with a guide port communicated with the mixed gas passage, and the guide port is used as an air inlet;

[0022] The gas outlet of the small molecular gas flow channel is communicated to the outside of the mixed gas passage;

[0023] Further comprising a gas pressurization device, the gas inlet of the gas pressurization device being an interface for connecting a mixed gas source;

[0024] The exhaust port of the gas booster is connected to the gas mixture inlet;

[0025] The gas booster is a gas booster with an outlet that maintains the flow of small molecule gas and exhausts gas outwards.

[0026] The small molecule gas flow channel is connected to the gas generator.

[0027] The density of oxygen is approximately 1.429 g / L, the density of nitrogen is approximately 1.25 g / L, the density of methane is approximately 0.717 g / L, and the density of hydrogen is approximately 0.0899 g / L.

[0028] The separated small-molecule gases, especially combustible gases such as methane and hydrogen, are used as fuel for gas generators to generate electricity.

[0029] It should be noted that this patent application does not involve purifying light gases to extremely high purity.

[0030] For example, the combustible concentration range of methane is 5%-15% (volume fraction), and many coal mines have low-concentration methane of more than 4%. By adopting the scheme in this patent application to increase it to 6%, it can have economic value for combustible power generation.

[0031] Therefore, the centrifugal force required during the purification process is not large, and the energy expenditure is also not large, which has significant economic value.

[0032] Further specified, the mixed gas with a methane volume fraction greater than 3% and less than 6% is introduced into the mixed gas inlet of the light gas pressurized centrifugal separator;

[0033] The outlet of the small molecule gas channel L5 outputs a mixed gas with a methane volume fraction greater than 6% and less than 10%.

[0034] This technology achieves a qualitative change in the methane gas in the gas mixture, transforming it from uneconomically combustible to economically combustible. Furthermore, it optimizes the overall energy consumption of the light gas pressurized centrifugal separator, making the gas-fired power generation system equipped with this device significantly more economical and conducive to energy conservation and emission reduction. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0036] Figure 1 A schematic diagram of the overall structure of a light gas pressurized centrifugal separator;

[0037] Figure 2 A schematic diagram of the twisting and splicing structure of a light gas pressurized centrifugal separator;

[0038] Figure 3 Side view of a light gas pressurized centrifugal separator;

[0039] Figure 4 Cross-sectional view of a light gas pressurized centrifugal separator;

[0040] Figure 5 A schematic diagram of a gas centrifuge system.

[0041] Figure 6 External schematic diagram of a pipeline motor;

[0042] Figure 7 A schematic diagram of the internal structure of a pipeline motor.

[0043] Figure 8 A schematic diagram of an overall structure;

[0044] Figure 9 A schematic cross-sectional view of an overall structure;

[0045] Figure 10 A schematic diagram of the internal structure of a light gas pressurized centrifugal separator;

[0046] Figure 11 A schematic diagram of a gas-mixing channel structure without a rotating shaft;

[0047] Figure 12 A schematic diagram of the overall structure without a rotating shaft. Detailed Implementation

[0048] To make the above-mentioned objectives, features and advantages of the present invention more readily understood, the specific embodiments of the present invention will be described in detail below.

[0049] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0050] To make the above-mentioned objectives, features and advantages of the present invention more readily understood, the specific embodiments of the present invention will be described in detail below.

[0051] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0052] Reference Figure 1 , 2 3, 4, 5, 8, 9, 10, 11, 12.

[0053] A gas-fired power generation system with a light gas pressurization and centrifugal separation device is characterized in that it includes a light gas pressurization and centrifugal separation device;

[0054] The light gas pressurized centrifugal separator includes a gas channel, which serves as a mixed gas channel H;

[0055] The gas mixing channel H is provided with a gas mixing inlet F1 for introducing the gas mixture and a connecting port for discharging high molecular weight gases. The connecting port is located on the outer side of the gas mixing channel H.

[0056] It also includes a gas centrifugal system L, which includes a rotating mechanism and a baffle mounted on the rotating mechanism to drive the gas to rotate, referred to as the rotating baffle L2;

[0057] The rotating baffle L2 rotates around the middle of the air-fuel mixture passage H;

[0058] Along the direction of airflow in the mixed gas channel H, there is also an airflow channel, which serves as a small molecule gas flow channel L5;

[0059] The small molecule gas channel L5 is located in the middle of the mixed gas channel H;

[0060] The small molecule gas flow channel L5 has a guide port that connects to the mixed gas channel H, and the guide port is used as the air inlet L4.

[0061] The outlet of the small molecule gas channel L5 is connected to the outside of the mixed gas channel H.

[0062] It also includes a gas booster device, the gas booster device having an inlet for connecting to a gas source for mixing;

[0063] The exhaust port of the gas booster is connected to the mixed gas inlet F1;

[0064] The gas booster is a gas booster that maintains the exhaust of gas from the outlet of the small molecule gas flow channel L5.

[0065] The small molecule gas flow channel L5 is connected to the gas generator.

[0066] The density of oxygen is approximately 1.429 g / L, the density of nitrogen is approximately 1.25 g / L, the density of methane is approximately 0.717 g / L, and the density of hydrogen is approximately 0.0899 g / L.

[0067] The separated small-molecule gases, especially combustible gases such as methane and hydrogen, are used as fuel for gas generators to generate electricity.

[0068] It should be noted that this patent application does not involve purifying light gases to extremely high purity.

[0069] For example, the combustible concentration range of methane is 5%-15% (volume fraction), and many coal mines have low-concentration methane of more than 4%. By adopting the scheme in this patent application to increase it to 6%, it can have economic value for combustible power generation.

[0070] Therefore, the centrifugal force required during the purification process is not large, and the energy expenditure is also not large, which has significant economic value.

[0071] Further specified, the mixed gas with a methane volume fraction greater than 3% and less than 6% is introduced into the mixed gas inlet F1 of the light gas pressurized centrifugal separator;

[0072] The outlet of the small molecule gas channel L5 outputs a mixed gas with a methane volume fraction greater than 6% and less than 10%.

[0073] This technology achieves a qualitative change in the methane gas in the gas mixture, transforming it from uneconomically combustible to economically combustible. Furthermore, it optimizes the overall energy consumption of the light gas pressurized centrifugal separator, making the gas-fired power generation system equipped with this device significantly more economical and conducive to energy conservation and emission reduction.

[0074] A light gas pressurized centrifugal separation device, characterized in that it includes a gas channel, which serves as a mixed gas channel H;

[0075] The gas mixing channel H is provided with a gas mixing inlet F1 for introducing the gas mixture and a connecting port for discharging high molecular weight gases. The connecting port is located on the outer side of the gas mixing channel H.

[0076] It also includes a gas centrifugal system L, which includes a rotating mechanism and a baffle mounted on the rotating mechanism to drive the gas to rotate, referred to as the rotating baffle L2;

[0077] The rotating baffle L2 rotates around the middle of the air-fuel mixture passage H;

[0078] Along the direction of airflow in the mixed gas channel H, there is also an airflow channel, which serves as a small molecule gas flow channel L5;

[0079] The small molecule gas channel L5 is located in the middle of the mixed gas channel H;

[0080] The small molecule gas flow channel L5 has a guide port that connects to the mixed gas channel H, and the guide port is used as the air inlet L4.

[0081] The outlet of the small molecule gas channel L5 is connected to the outside of the mixed gas channel H.

[0082] It also includes a gas booster device, the gas booster device having an inlet for connecting to a gas source for mixing;

[0083] The exhaust port of the gas booster is connected to the mixed gas inlet F1;

[0084] The gas booster is a gas booster with an outlet that maintains the small molecule gas flow channel L5 and exhausts gas outwards.

[0085] It also includes a high molecular weight gas outlet mechanism F2, and the connection port is connected to the high molecular weight gas outlet mechanism F2.

[0086] The above design abandons traditional cooling liquefaction technology, molecular sieve technology, and permeation membrane technology, which are used to separate small molecular weight gases.

[0087] The small molecule gas flow channel L5 is preferably connected to a gas generator as fuel.

[0088] Given that the inventors recognized the potential for power generation in low-molecular-weight gases, methane concentration only needs to be increased to above 6%, this invention provides a highly efficient, low-cost, long-lasting, consumable-free technology for increasing the concentration of low-molecular-weight gases by appropriately reducing the purification level.

[0089] This invention does not use a traditional gas centrifuge, but instead uses a pipeline-type "light gas pressurized centrifugal separator", which is easy to connect directly to the gas channel, making it more practical and easier to arrange equipment, and also lower in cost.

[0090] Furthermore, traditional gas centrifugal separation technology separates gases by throwing them out layer by layer using centrifugal force. This invention, however, adopts a completely opposite design concept.

[0091] This invention does not obtain purified low molecular weight gas through centrifugal force, but rather uses the reverse force of gas centrifugal force to force low molecular weight gas into the low molecular weight gas flow channel L5 in the middle of the mixed gas channel H, thereby completing the supply of low molecular weight gas with increased concentration.

[0092] The term "middle part" as used in this invention is not limited to the central location, but includes the area near the center.

[0093] In this invention, mixed gas is introduced into mixed gas channel H through mixed gas inlet F1. After being pushed by rotating baffle L2, the mixed gas rotates, thereby generating centrifugal force. Nitrogen, oxygen, and carbon dioxide with large molecular weight tend to move towards the wall of mixed gas channel H, while small molecular weight gases are squeezed back to the middle and then enter the small molecule gas flow channel L5 in the middle of mixed gas channel H, thus completing the purity improvement.

[0094] Compared to traditional centrifugal gas separators, this design greatly simplifies the structure and improves system stability.

[0095] The gas booster uses a fan, and the gas pressure inside the mixed gas channel H is higher than the external gas pressure at the connection port, ranging from 0.1 atmospheres to 1 atmosphere.

[0096] While ensuring that the purity of gas separation meets the requirements, it also reduces equipment costs and energy consumption.

[0097] Alternatively, the gas booster can be an air compressor, with the gas pressure inside the mixed gas channel H being 1 to 3 atmospheres higher than the external gas pressure at the connection port.

[0098] While improving gas separation purity to meet requirements, we maintain low equipment costs and low energy consumption.

[0099] In operation, the gas booster continuously supplies mixed gas to the mixed gas channel H, continuously discharges large molecule gas from the connection port, and continuously outputs small molecule gas from the small molecule gas channel L5.

[0100] Compared to traditional molecular sieves, it has many advantages such as continuous monomer operation, low equipment cost, low energy consumption, and long service life.

[0101] Connecting port, connecting to atmospheric emissions.

[0102] The outer side of the rotating baffle L2 (the side away from the rotation axis) is less than 1 cm away from the inner wall of the air-mixing passage H.

[0103] It reduces edge turbulence and makes better use of the reverse pressure of the gas with the greatest centrifugal force at the edge.

[0104] The mixing passage H uses a straight pipe;

[0105] One end of the mixture passage H is fitted with a mixture inlet F1 for the mixture to flow into the mixture.

[0106] The other end of the mixed gas channel H is equipped with a high molecular weight gas outlet mechanism F2 that discharges large molecular gas.

[0107] The connection port connected to the high molecular weight gas outlet mechanism F2 is called the high molecular weight gas connection port;

[0108] The end of the small molecule gas flow channel L5 facing the mixed gas inlet F1 is closed;

[0109] The inner radius of the mixed gas inlet F1 is more than 3 times the inner radius of the small molecule gas flow channel L5;

[0110] The distance from the macromolecular gas inlet to the center of the mixed gas channel H is greater than the inner radius of the mixed gas inlet F1.

[0111] The large molecules in the mixed gas entering through the F1 inlet are centrifuged and then move closer to the large molecule gas connection port before being discharged.

[0112] Small molecule gases entering the mixed gas through the inlet F1 are squeezed by the large molecule gases through centrifugal force before entering the small molecule gas channel L5.

[0113] The above design of the present invention allows for gas supply without the need for staged pressurization and depressurization as in traditional equipment such as centrifuges and molecular sieves.

[0114] It allows for the continuous supply of mixed gases and the output of small molecule gases.

[0115] The mixed gas inlet F1 is connected to a blower that outputs mixed gas.

[0116] This invention allows for the supply of mixed gases without the need for an air compressor. This significantly reduces costs and energy consumption, and greatly increases gas throughput.

[0117] The inner radius of the gas-mixing passage H is more than three times the inner radius of the gas-mixing inlet F1.

[0118] Increase the centrifugal pressure of the accelerated gas near the inner wall of the mixing channel H. Improve the purification effect.

[0119] The inner radius of the gas mixing channel H is preferably 0.5m to 2m.

[0120] It ensures both low cost and easy acquisition of appropriate speed while being compatible with conventional motors, and provides good centrifugal force at that speed, making it easy to achieve good gas separation effect.

[0121] It also includes a breathable buffer shield F3, which shields the mixture inlet F1 between the air-fuel mixture inlet and the rotating baffle L2.

[0122] The breathable cushioning shield F3 has a breathable cushioning material layer, which is made of at least one of a breathable fiber material layer and a built-in breathable microporous material layer.

[0123] The breathable cushioning material layer can be made of materials such as asbestos, PP surface, fiber cotton, sponge, zeolite, etc.

[0124] The cross-sectional area of ​​the breathable buffer shield F3 is larger than the area of ​​the air-fuel mixture inlet F1.

[0125] Preferably, the outer edge of the breathable buffer shield F3 abuts against the inner wall of the air-mixing channel H.

[0126] The air-fuel mixture entering through the air-fuel inlet F1 is buffered and filtered as much as possible through the permeable buffer shield F3, becoming softer, before entering the rotating baffle L2 for rotational acceleration.

[0127] It also includes an air intake guide F4, which is an object that blocks airflow and is located in the middle of the air-mixing passage H between the air-mixing inlet F1 and the rotating baffle L2.

[0128] The maximum cross-sectional area of ​​the intake guide F4 facing the air-fuel mixture inlet F1 is greater than one-third of the area of ​​the air-fuel mixture inlet F1 and less than nine-tenths of the inner diameter of the air-fuel mixture passage H at that location.

[0129] First, it buffers the airflow velocity and reduces the impact;

[0130] Secondly, it slows down the solid particles in the airflow, causing them to settle.

[0131] Third, the mixed gas is diverted to the periphery, temporarily away from the central axis of the mixed gas channel H, and the amount of mixed gas in the central axis of the front section of the mixed gas channel H is appropriately reduced, which is beneficial to improving the purity of small molecule gas in the small molecule gas channel L5.

[0132] The design is further specified as follows:

[0133] It also includes a breathable buffer shield F3, which shields the mixture inlet F1 to the rotating baffle L2.

[0134] It also includes an air intake guide F4, which is an object that blocks airflow and is located in the middle of the air mixture passage H between the air mixture inlet F1 and the air vent buffer shield F3.

[0135] The air mixture at the air inlet F1 first impacts the air intake guide F4, reducing the flow velocity in the central section, and then diffuses to the periphery, leaving the central position of the air mixture channel H. After passing through the breathable buffer shield F3, the airflow is evenly and gently softened.

[0136] This sorting of relationships helps to avoid the adhesion of large particles, the peripheral dispersion of the mixed gas, and the homogenization buffer, thereby improving the purification effect.

[0137] The outlet of the small molecule gas channel L5 is connected to the outside of the mixed gas channel H.

[0138] The mixing passage H uses a straight pipe;

[0139] One end of the mixture passage H is opened to the mixture inlet F1;

[0140] The other end of the gas-mixing passage H is a connecting port.

[0141] Compared to traditional gas centrifugal separators, this design makes it easier to achieve large-scale gas flow, smoother and more efficient gas paths, lower construction costs, and more stable performance.

[0142] The mixed gas inlet F1 has a pipe interface flange that matches the pipe interface of the pipeline system;

[0143] The F2 connector or high molecular weight gas outlet mechanism has a pipe interface flange that matches the pipe interface of the pipeline system.

[0144] The gas mixing channel H is connected to the pipeline system that transports the gas mixture.

[0145] The mixed gas channel H can be directly used as a gas delivery pipeline and built on the pipeline, reducing the construction cost of the entire pipeline.

[0146] The air inlet L4 is located in the middle of the air-mixing passage H, at the position where the rotating baffle L2 is located;

[0147] It is located on the side of the mixed gas channel H closer to the connection port or the high molecular weight gas outlet mechanism F2.

[0148] Preferred options are:

[0149] The air inlet L4 is located in the middle of the rotating baffle L2 near the rotation axis, and on the side of the rotating baffle L2 near the connecting port or the high molecular weight gas outlet mechanism F2, and after three-fifths of the length of the rotating baffle L2.

[0150] When the rotating baffle L2 drives the mixed gas to rotate, the first three-fifths of the distance is not output to the inlet L4 for small molecule gas.

[0151] This avoids the impact and mixing caused by turbulence and disturbance. After passing three-fifths of the length of the rotating baffle L2, turbulence and disturbance are eliminated, and the gas is smoothly accelerated as a whole before the inlet L4 outputs the small molecule gas. This improves the purification performance of small molecule gases.

[0152] This structure is particularly suitable for scenarios where air is continuously supplied by a fan without an air compressor.

[0153] A fiber layer with a thickness greater than 2mm is provided at the air inlet L4 as a fiber buffer layer.

[0154] First, it buffers the turbulent airflow, reducing the large molecular weight gases that enter the L4 inlet due to turbulence rather than compression. Second, it filters solid impurities.

[0155] The buffer fiber layer is preferably made of at least one of glass fiber layer, asbestos fiber layer, and PP surface fiber layer with a thickness of 2 to 5 mm.

[0156] A preferred embodiment is that the air inlets L4 are arranged in a strip array, and the strip array is covered with a fiber buffer layer.

[0157] This design avoids the need to install fiber buffer layers on each individual air intake L4.

[0158] In a preferred embodiment, the air inlet L4 is arranged in a strip array between two adjacent rotating baffles L2, and the strip array is covered with a fiber buffer layer, the edge of which abuts against the two rotating baffles L2.

[0159] Turbidity is reduced by using two adjacent rotating baffles L2.

[0160] A water-resistant and air-permeable semi-permeable membrane is installed at the air inlet L4.

[0161] Firstly, it removes moisture; secondly, it reduces the permeation rate of large molecular gases.

[0162] A water-resistant and air-permeable semi-permeable membrane is installed on the outside of the air inlet L4, and a fiber layer with a thickness of more than 2mm is installed on the outside of the semi-permeable membrane as a fiber buffer layer.

[0163] It has higher selectivity for small molecular weight gases and makes it easier to increase the concentration of small molecular weight gases.

[0164] Specific Implementation 1:

[0165] The following is a design where the rotating baffle L2 is equipped with a rotating shaft.

[0166] The gas centrifugal system L includes a rotating shaft L1 and rotating baffles L2 arranged on the rotating shaft L1;

[0167] The length direction of the rotating shaft L1 is set along the airflow direction in the mixed gas passage H;

[0168] The gas mixing passage H is provided with at least two rotating shaft supports L3 with ventilated structures;

[0169] The rotating shaft L1 is installed in the gas-mixing passage H between at least two rotating shafts L1;

[0170] At least two rotating baffles L2 that drive the gas to rotate are arranged on the rotating shaft L1;

[0171] It also includes an electric system that drives the connecting shaft L1;

[0172] A small molecule gas flow channel L5 is provided in the middle of the gas centrifugation system L, which is arranged along the direction of the rotating shaft L1;

[0173] The small molecule gas flow channel L5 has a guide port that connects to the mixed gas channel H, and the guide port is used as the air inlet L4.

[0174] The gas centrifugal system L has a circular shielding structure L6 at one end near the connection port. The circular shielding structure L6 is mounted on the rotating shaft L1, and the outer side of the circular shielding structure L6 has a breathable gap.

[0175] Use the ventilation gap on the outside of the circular shielding structure L6 as a connection port;

[0176] The radius of the inner wall of the gas mixing passage H at the location of the circular shielding structure L6 is used as a reference;

[0177] The distance from the air gap to the center of the rotating shaft L1 is greater than three-fifths of the inner wall radius of the mixed gas channel H.

[0178] From the perspective of the airflow direction, the high molecular weight gas outlet mechanism F2 is located behind the circular shielding structure L6.

[0179] The gas accelerated by the gas centrifugal system L overflows from the edge of the circular shielding structure L6.

[0180] First, ensure stable airflow in the front of the circular shielding structure L6, near the center of the rotating shaft L1;

[0181] Secondly, ensure that the gas with the largest molecular weight overflows first, enters the connecting port, and is discharged.

[0182] This improves the purity of low molecular weight gases.

[0183] The circular shielding structure L6 has a gap between itself and the inner wall of the mixing gas channel H, which serves as the air permeability gap.

[0184] Alternatively, channels can be provided around the outer perimeter of the circular shielding structure L6 as ventilation gaps.

[0185] An air inlet L4, which is connected to the small molecule gas flow channel L5, is provided at the rear section after three-fifths of the length of the gas centrifuge system L.

[0186] For example, the preferred option is:

[0187] The length L of the gas centrifuge system is greater than 3 meters;

[0188] The air intake L4 should be installed at least 2 meters away from the F1 side of the air-fuel mixture inlet.

[0189] Reduce turbulence at inlet L4 and increase the concentration of low molecular weight gases.

[0190] The rotating shaft L1 of the gas centrifugal system L is formed by splicing together at least two sections of rotating shaft L1;

[0191] The joint between the two rotating shafts L1 adopts a live joint structure.

[0192] First, it achieves synchronized rotation and reduces turbulence; second, it avoids increased costs caused by an excessively long single shaft L1; and third, it reduces the possibility of resonance damage caused by shaft L1 wobbling.

[0193] The mixed gas passage H is formed by splicing together at least two gas passage segments;

[0194] At least one rotating shaft support L3 is provided at the joint of the two gas channels;

[0195] The rotating shaft L1 of the gas centrifugal system L is formed by splicing together at least two sections of rotating shaft L1;

[0196] The joint between the two rotating shafts L1 adopts a live joint structure;

[0197] The joint between the two rotating shafts L1 is located at the joint between the two gas channels;

[0198] Two rotating shafts L1 are mounted on at least one rotating shaft support L3 at the junction of the two gas channels.

[0199] Reduced costs and easier maintenance.

[0200] Reference Figure 6 , 7 It uses a pipe-type electric motor.

[0201] The pipeline motor includes a rotor D and a stator, wherein the rotor D is a permanent magnet rotor;

[0202] It also includes a pipe, serving as an isolation pipe H1;

[0203] The wall thickness of the isolation pipe H1 is less than 5 mm;

[0204] The isolation pipe H1 is equipped with a mixing channel H docking mechanism that docks with one of the fluid inlet F1 and fluid outlet F2 of the mixing channel H;

[0205] The isolation pipe H1 is equipped with a rotor support for the permanent magnet rotor.

[0206] The rotor support and the isolation pipe H1 form a direct or indirect fixed connection;

[0207] The permanent magnet rotor is mounted on a rotor support;

[0208] The stator is sleeved outside the isolation pipe H1 and forms an electromagnetic induction relationship with the permanent magnet rotor;

[0209] The permanent magnet rotor is equipped with a front-to-back conductive channel D1;

[0210] The permanent magnet rotor drives the gas centrifugal system L.

[0211] The permanent magnet rotor is directly connected to the shaft L1 of the gas centrifugal system L or connected through a speed change system.

[0212] Traditional gas power generation systems and gas drive systems have an electric motor located outside the gas mixing channel H, which is connected to the power system (turbo, expander, steam turbine, turbine, scroll mill, water turbine, impeller system, screw compressor) inside the gas mixing channel H through transmission mechanisms such as sealed bearings and gearboxes.

[0213] Sealed bearings are expensive, easily damaged, and complex to replace. Gearboxes are expensive, require lubrication mechanisms, suffer from transmission energy loss, and require a relatively large space.

[0214] In this invention, by placing the stator with the induction coil outside the isolation pipe H1, the sealing bearing is no longer needed, nor is it necessary to set up a wire that penetrates the flow channel (including the mixed gas channel H), thus achieving high-performance isolation inside and outside the isolation pipe H1.

[0215] It eliminates the maintenance costs of sealed bearings, omits the gearbox, and eliminates the complex sealing and anti-aging design of the wires connected to the induction coil penetrating the flow channel (including the mixing gas channel H).

[0216] Very few designs use a method where the entire motor is placed inside the flow channel, which also requires wires to penetrate the flow channel, posing a safety hazard.

[0217] Moreover, placing the entire motor inside the flow channel inevitably leads to problems such as large equipment size and difficulty in motor maintenance.

[0218] Furthermore, placing the entire motor inside the flow channel inevitably means that the induction coil is also placed inside the flow channel. The induction coil is subjected to the impact of high-speed gas (especially natural gas, flue gas, chemical gases, etc., gases containing impurities) for a long time, which causes corrosion of the induction coil, accelerated aging of the induction coil, and even leakage of the induction coil, resulting in a very short service life of the entire system, and there is also a major safety hazard of internal electric spark "ignition".

[0219] This invention places the stator induction coil outside the isolation pipe H1, making the relatively fragile induction coil in the motor easier to repair.

[0220] By placing the induction coil outside the isolation pipe H1, isolation is achieved from the gas (especially natural gas, flue gas, chemical gases, and other gases containing impurities) inside the mixed gas channel H.

[0221] This avoids induction coil corrosion, slows down induction coil aging, and reduces the risk of induction coil leakage, thus extending the overall system lifespan. There is no safety hazard of internal electrical spark "ignition" in the gas-mixing channel H, significantly improving safety.

[0222] The goal is to directly install the motor power unit into the gas mixing channel H to ensure mechanical performance and system simplicity and stability, while also ensuring that the installed motor unit is small enough to reduce its impact on pipeline flow.

[0223] The rotating shaft L1 has a hollow pipe, which serves as the flow channel L5 for small molecule gas.

[0224] The small molecule gas flow channel L5 is connected to the small molecule gas supply pipeline via a rotatable gas flow connector.

[0225] The rotating baffle L2 is a long, flat plate aligned with the length of the rotating shaft L1. This reduces turbulence.

[0226] The gas mixing channel H is a rotatable gas channel;

[0227] The outer side of the rotating baffle L2 on the rotating shaft L1 is connected to the inner wall of the gas mixture passage H.

[0228] By integrating rotation and reducing internal gaps, internal turbulence is reduced, thereby improving the purity of low molecular weight gases.

[0229] Implementation 2:

[0230] Reference Figure 11 , 12 The mixing air passage H and the rotating baffle L2 are integrated.

[0231] It also includes a base bracket that supports the air-mixing passage H;

[0232] A rotating mechanism is provided on the base support, and the mixed gas passage H is rotatably mounted on the base support through the rotating mechanism;

[0233] It also includes an electric system that drives the air-mixing passage H to rotate, the electric system driving the air-mixing passage H;

[0234] The outer side of the rotating baffle L2 is fixedly connected to the inner wall of the gas-mixing passage H, and the connection between the rotating baffle L2 and the inner wall of the gas-mixing passage H has an airtight structure.

[0235] The above design allows the gas mixing channel H to rotate, which in turn drives the rotating baffle L2 to rotate, thereby driving the gas mixing to rotate.

[0236] In the above design, "the connection between the rotating baffle L2 and the inner wall of the mixed gas channel H has an airtight structure". When the mixed gas is pushed to the edge by centrifugal force and generates higher pressure, it is difficult to move through the gap, so that the edge airflow is stable, thereby ensuring that the overall airflow is as stable as possible and improving the purification quality.

[0237] At the same time, it avoids the problem of shaft sinking during long-term operation, avoids collision between the air-mixing passage H and the rotating baffle L2, and reduces the risk of eccentric shaking and vibration.

[0238] An annular rack is provided outside the mixing passage H as a drive structure for connection with the electric system.

[0239] All pipe interfaces connected to the mixed gas passage H can be rotatable docking interfaces.

[0240] Specific Implementation Three:

[0241] Install at least two light gas pressurization centrifugal separation devices, and an air compressor to supply the mixed gas;

[0242] The air compressor is connected to two light gas pressurization and centrifugal separation devices through two air passages;

[0243] It is also equipped with a switching valve to switch between the two airways;

[0244] Both the high molecular weight gas outlet mechanism F2 and the small molecule gas flow channel L5 are equipped with on / off valves;

[0245] Control the switching valve so that the air compressor first supplies mixed gas to the first light gas pressurization centrifugal separator, and then closes the switching valve to pressurize;

[0246] Then, by switching valves to shut off the gas supply, after the first light gas pressurizing centrifugal separator accelerates the mixed gas to the required speed by rotating baffle L2, the switch valves of the high molecular weight gas outlet mechanism F2 and the small molecule gas flow channel L5 are opened to exhaust the gas.

[0247] After shutting off the gas supply to the first light gas pressurized centrifugal separator by switching the valve, the gas supply to the second light gas pressurized centrifugal separator is opened by switching the valve, and the cycle is repeated as with the first light gas pressurized centrifugal separator.

[0248] Specific Implementation Four:

[0249] The mixing passage H uses a straight pipe;

[0250] One end of the mixture passage H is fitted with a mixture inlet F1 for the mixture to flow into the mixture.

[0251] The other end of the mixed gas channel H is equipped with a connecting port for the outflow of macromolecular gas, which is called the macromolecular gas connecting port;

[0252] The end of the small molecule gas flow channel L5 facing the mixed gas inlet F1 is closed;

[0253] The inner radius of the mixed gas inlet F1 is more than 3 times the inner radius of the small molecule gas flow channel L5;

[0254] The distance from the macromolecular gas inlet to the center of the mixed gas channel H is greater than the inner radius of the mixed gas inlet F1.

[0255] The large molecules in the mixed gas entering through the F1 inlet are centrifuged and then move closer to the large molecule gas connection port before being discharged.

[0256] Small molecule gases entering the mixed gas through the inlet F1 are squeezed by the large molecule gases through centrifugal force before entering the small molecule gas channel L5.

[0257] The above design of the present invention allows for gas supply without the need for staged pressurization and depressurization as in traditional equipment such as centrifuges and molecular sieves.

[0258] It allows for the continuous supply of mixed gases and the output of small molecule gases.

[0259] The mixed gas inlet F1 is connected to a blower that outputs mixed gas.

[0260] The air inlet L4 is located in the middle of the air-mixing passage H, at the position where the rotating baffle L2 is located;

[0261] It is located on the side of the mixing channel H closer to the connection port.

[0262] The inner radius of the mixture passage H is more than three times the inner radius of the mixture inlet F1;

[0263] The outer side of the rotating baffle L2 (the side away from the rotation axis) is less than 1 cm away from the inner wall of the air-mixing passage H.

[0264] Increase the centrifugal pressure of the accelerated gas near the inner wall of the mixing channel H. Improve the purification effect.

[0265] Preferred options are:

[0266] The air inlet L4 is located in the middle of the rotating baffle L2 near the axis of rotation, on the side of the rotating baffle L2 near the connecting port, and after three-fifths of the length of the rotating baffle L2.

[0267] When the rotating baffle L2 drives the mixed gas to rotate, the first three-fifths of the distance is not output to the inlet L4 for small molecule gas.

[0268] This avoids the impact and mixing caused by turbulence and disturbance. After passing three-fifths of the length of the rotating baffle L2, turbulence and disturbance are eliminated, and the gas is smoothly accelerated as a whole before the inlet L4 outputs the small molecule gas. This improves the purification performance of small molecule gases.

[0269] This structure is particularly suitable for scenarios where air is continuously supplied by a fan without an air compressor.

[0270] The connection port directly connects to the atmosphere for emissions.

[0271] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A gas-fired power generation system with a light gas pressurization and centrifugal separation device, characterized in that, Includes a light gas pressurized centrifugal separation device; The light gas pressurized centrifugal separator includes a gas channel, which serves as a mixed gas channel H; The gas mixing channel H is provided with a gas mixing inlet F1 for introducing the gas mixture and a connecting port for discharging high molecular weight gases. The connecting port is located on the outer side of the gas mixing channel H. It also includes a gas centrifugal system L, which includes a rotating mechanism and a baffle mounted on the rotating mechanism to drive the gas to rotate, referred to as the rotating baffle L2; The rotating baffle L2 rotates around the middle of the air-fuel mixture passage H; Along the direction of airflow in the mixed gas channel H, there is also an airflow channel, which serves as a small molecule gas flow channel L5; The small molecule gas channel L5 is located in the middle of the mixed gas channel H; The small molecule gas flow channel L5 has a guide port that connects to the mixed gas channel H, and the guide port is used as the air inlet L4. The outlet of the small molecule gas channel L5 is connected to the outside of the mixed gas channel H. It also includes a gas booster device, the gas booster device having an inlet for connecting to a gas source for mixing; The exhaust port of the gas booster is connected to the mixed gas inlet F1; The gas booster is a gas booster that maintains the exhaust of gas from the outlet of the small molecule gas flow channel L5. The small molecule gas flow channel L5 is connected to the gas generator.

2. The gas-fired power generation system with a lightweight gas pressurization and centrifugal separation device according to claim 1, characterized in that, The mixed gas with a methane volume fraction greater than 3% and less than 6% is introduced into the mixed gas inlet F1 of the light gas pressurized centrifugal separator. The outlet of the small molecule gas channel L5 outputs a mixed gas with a methane volume fraction greater than 6% and less than 10%.

3. The gas-fired power generation system with a lightweight gas pressurization and centrifugal separation device according to claim 1, characterized in that, Mixed gas is introduced into mixed gas channel H through mixed gas inlet F1. After being pushed by rotating baffle L2, the mixed gas rotates, which in turn generates centrifugal force. Nitrogen, oxygen, and carbon dioxide with large molecular weight tend to move towards the wall of mixed gas channel H, while small molecular weight gases are squeezed back to the middle and then enter the small molecule gas flow channel L5 in the middle of mixed gas channel H, thus completing the purity improvement.

4. The gas-fired power generation system with a lightweight gas pressurization and centrifugal separation device according to claim 1, characterized in that, The outer side of the rotating baffle L2 is less than 1 cm away from the inner wall of the air-mixing passage H.

5. The gas-fired power generation system with a lightweight gas pressurization and centrifugal separation device according to claim 1, characterized in that, The mixing passage H uses a straight pipe; One end of the mixture passage H is fitted with a mixture inlet F1 for the mixture to flow into the mixture. The other end of the mixed gas channel H is equipped with a connecting port for the outflow of macromolecular gas, which is called the macromolecular gas connecting port; The end of the small molecule gas flow channel L5 facing the mixed gas inlet F1 is closed; The inner radius of the mixed gas inlet F1 is more than 3 times the inner radius of the small molecule gas flow channel L5; The distance from the macromolecular gas inlet to the center of the mixed gas channel H is greater than the inner radius of the mixed gas inlet F1. The large molecules in the mixed gas entering through the F1 inlet are centrifuged and then move closer to the large molecule gas connection port before being discharged. Small molecule gases entering the mixed gas through the inlet F1 are squeezed by the large molecule gases through centrifugal force before entering the small molecule gas channel L5.

6. The gas-fired power generation system with a lightweight gas pressurization and centrifugal separation device according to claim 4, characterized in that, The mixed gas inlet F1 is connected to a blower that outputs mixed gas.

7. The gas-fired power generation system with a lightweight gas pressurization and centrifugal separation device according to claim 1, characterized in that, The inner radius of the gas-mixing passage H is more than three times the inner radius of the gas-mixing inlet F1.

8. The gas-fired power generation system with a lightweight gas pressurization and centrifugal separation device according to claim 1, characterized in that, The breathable cushioning shield F3 has a breathable cushioning material layer, which is made of at least one of a breathable fiber material layer and a built-in breathable microporous material layer.

9. The gas-fired power generation system with a lightweight gas pressurization and centrifugal separation device according to claim 1, characterized in that, It also includes an air intake guide F4, which is an object that blocks airflow and is located in the middle of the air-mixing passage H between the air-mixing inlet F1 and the rotating baffle L2. The maximum cross-sectional area of ​​the intake guide F4 facing the air-fuel mixture inlet F1 is greater than one-third of the area of ​​the air-fuel mixture inlet F1 and less than nine-tenths of the inner diameter of the air-fuel mixture passage H at that location.

10. The gas-fired power generation system with a lightweight gas pressurization and centrifugal separation device according to claim 1, characterized in that, A gas centrifugal system includes a rotating shaft L1 and rotating baffles L2 arranged on the rotating shaft L1; The length direction of the rotating shaft L1 is set along the airflow direction in the mixed gas passage H; The gas mixing passage H is provided with at least two rotating shaft supports L3 with ventilated structures; The rotating shaft L1 is installed in the gas-mixing passage H between at least two rotating shafts L1; At least two rotating baffles L2 that drive the gas to rotate are arranged on the rotating shaft L1; It also includes an electric system that drives the connecting shaft L1; A small molecule gas flow channel L5 is provided in the middle of the gas centrifugation system L, which is arranged along the direction of the rotating shaft L1; The small molecule gas flow channel L5 has a guide port that connects to the mixed gas channel H, and the guide port is used as the air inlet L4. The gas centrifugal system L has a circular shielding structure L6 at one end near the connection port. The circular shielding structure L6 is mounted on the rotating shaft L1, and the outer side of the circular shielding structure L6 has a breathable gap. Use the ventilation gap on the outside of the circular shielding structure L6 as a connection port; The radius of the inner wall of the gas mixing passage H at the location of the circular shielding structure L6 is used as a reference; The distance from the air gap to the center of the rotating shaft L1 is greater than three-fifths of the inner wall radius of the mixed gas channel H.

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