Fluid obstruction structure for turbocharging and creating a barrier

Abstract

The application provides a turbocharging and potential barrier forming fluid blocking structure, which comprises a stator part and a rotor part, and further comprises a guide flow channel, a blocking medium flows along a path of the guide flow channel to form an open blocking structure between the stator part and the rotor part; the guide flow channel at least comprises a main flow channel and a branch flow channel, the blocking medium forms a conflict of flow paths at the intersection of the branch flow channel and the main flow channel and forms a potential barrier of two blocking media. The stator part and the rotor part are allowed to be non-contact structures, and the blocking medium has a larger cleaning margin; the technical scheme reduces the limitations caused by limited factors when the technical scheme is used under high working conditions, and improves the diversity of the selection of the blocking medium and the working condition; the total pressures of the two flows are similar, and the flow directions are opposite or close to opposite, thereby causing significant kinetic energy loss, causing pressure plugging on the flow channel, forming a potential barrier, and realizing effective throttling.

Description

Technical Field

[0001] This invention relates to the field of fluid blockage technology, and more specifically, to a fluid blockage structure that turbocharges and forms a potential barrier. Background Technology

[0002] Rotating machinery often requires varying degrees of isolation from certain media. Complete isolation is called sealing technology, while partial isolation is generally called throttling technology. Fluid isolation technology is of great importance in a wide range of fields. Among these, rotating mechanisms, which involve the passage of media, represent one of the most common types of isolation.

[0003] Existing isolation technologies have significant limitations due to their technical principles when faced with unclean media, high-parameter media (high or low temperature, high pressure, strong corrosiveness), high mechanical speed, etc., and may even fail to achieve isolation or have a short lifespan. Summary of the Invention

[0004] This invention aims to solve at least one of the technical problems existing in the prior art, and proposes a structure based on the commonality of rotating machinery. Through structural design, fluid diversion and guidance are achieved, and through the synergistic effect of guidance and turbocharging technology, a potential barrier is established on the fluid flow path to efficiently block the flow of fluid. Furthermore, a progressively throttling structure is achieved through a isomorphic gradient hierarchical technical solution.

[0005] Therefore, the present invention provides a fluid blockage structure that turbocharges and forms a potential barrier.

[0006] This invention provides a fluid blockage structure for turbocharging and forming a potential barrier, comprising a stator section and a rotor section, and further comprising: A flow channel is formed between the stator and the rotor, and a blocking medium flows along the path of the flow channel to form an open blocking structure between the stator and the rotor. The flow channel includes at least a main flow channel and branch flow channels. The branch flow channels are formed in the stator and the rotor and are arranged alternately along the path of the main flow channel. The blocking medium causes a flow path conflict at the intersection of the branch flow channel and the main flow channel and forms a barrier between the two blocking mediums.

[0007] The present invention proposes a turbocharged fluid blocking structure that forms a potential barrier. The main flow channel of the guide channel is formed by the gap between the stator and the rotor. The blocking medium enters from one end of the guide channel and is discharged after passing through the main flow channel and the branch flow channel, thus forming an open blocking structure for the blocking medium.

[0008] In existing rotating machinery, the moving parts (rotor) and stationary parts (stator) are connected. For example, a sealing ring (or similar structure) is usually added between them to ensure the sealing of the blocking medium and prevent leakage. However, this leads to the following disadvantages: 1. It requires a high cleanliness margin for the blocking medium. When particles are present in the blocking medium, it can cause wear on the connection structure or blockage of the medium's flow path, leading to mechanical seal failure; 2. When a high-parameter blocking medium participates in blocking under corresponding high-demand operating conditions (such as high or low temperature conditions, high or ultra-high pressure conditions, or highly corrosive conditions), the requirements for each component of the rotating machinery increase accordingly, especially the components involved in the blocking or isolation of the medium. This can lead to failure of the blocking or isolation process and a reduction in the lifespan of the related components.

[0009] Therefore, the open blocking structure in this technical solution allows the stator and rotor to be non-contact structures, thereby making the size of the flow channel (i.e., the gap between the stator and rotor) adjustable. This allows for a larger design gap to be used according to the fluid parameters of the blocking medium, thus allowing for a greater cleanliness margin in the blocking medium, and even allowing for the presence of particles or impurities. Furthermore, by eliminating the connection structure between the stator and rotor or related components involved in media blocking or isolation, this technical solution reduces the limitations imposed by restrictive factors during operation under high-performance conditions, thereby improving the versatility of blocking media and operating conditions.

[0010] Based on the above, this technical solution divides the flow channel into a main flow channel and a branch flow channel. The blocking medium is distributed into two flow paths with different flow directions in the main flow channel and the branch flow channel. One part of the flow continues to flow along the main flow channel from the direction of high total pressure to the direction of low total pressure, while the other part of the flow changes its flow direction through the branch flow channel and eventually forms a flow path conflict with the flow in the main flow channel (the flow directions of the two flow streams are opposite or nearly opposite). Because the total pressure of the two flow streams is similar, but their flow directions conflict (opposite or nearly opposite), a significant kinetic energy loss is caused, resulting in a total pressure loss for the incoming flow. Pressure embolism is created in the flow channel, forming a potential barrier and achieving effective flow throttling.

[0011] Furthermore, when the rotor rotates, the flow channel on the rotor ring is a turbine structure. Its inlet flow is forced in by the upstream flow. The impeller flow channel on the rotor ring is designed according to fluid mechanics and has high efficiency. The impeller reverses the inlet flow and applies part of the mechanical energy of the rotor rotation to the fluid through the blades, thereby pressurizing the fluid. The flow direction at the turbine outlet is also opposite to the direction of the incoming flow. According to Bernoulli's theorem, this creates a stronger potential barrier. The strength of this potential barrier is directly proportional to the rotational speed. That is to say, the higher the rotational speed, the stronger the potential barrier and the more significant the throttling.

[0012] The turbocharged and barrier-forming fluid blockage structure according to the above-described technical solution of the present invention may also have the following additional technical features: In the above technical solution, the branch channel has a branch inlet and a converging outlet that are connected to the main channel, and the path of the branch channel is part of a ring structure. The blocking medium enters from the branch inlet and flows along the branch channel before flowing out from the converging outlet, where it conflicts with the blocking medium flowing in the main channel at this location.

[0013] In this technical solution, the shape and structure of the branch flow channel are specifically defined. The branch flow channel is part of a ring structure. Therefore, when the blocking medium enters the branch flow channel, it will change its flow direction along the path of the ring structure, and then form a flow conflict with the blocking medium flowing in the main flow channel at the collection outlet. That is, the flow directions of the two are opposite or close to opposite, thus forming the aforementioned barrier effect.

[0014] In the above technical solution, the main channel has a main inlet and a main outlet. The main inlet is located on the side of the blocking medium with relatively high total pressure, and the main outlet is located on the side of the blocking medium with relatively low total pressure, so as to meet the requirement that the blocking medium flows from the high total pressure side to the low total pressure side of the main channel.

[0015] In this technical solution, the shape and structure of the main channel are specifically defined. Since the blocking medium satisfies the characteristic of the main channel flowing from the high total pressure side to the low total pressure side, the main channel inlet and outlet are respectively located on the side with relatively high and relatively low total pressure. Of course, when the relatively high and relatively low total pressures change, the main channel inlet and outlet will change accordingly.

[0016] In the above technical solution, the demand equation for the flow of the blocking medium from the high total pressure side to the low total pressure side of the main flow channel is:

[0017] in, For total pressure, For static pressure, Let ρ be the potential pressure, ρ be the density, and v be the velocity.

[0018] In this technical solution, Bernoulli's total pressure equation is used to explain that fluid can only flow from the direction of higher total pressure to the direction of lower total pressure. Of course, in the technical application environment, potential pressure is generally negligible.

[0019] In the above technical solution, the path of the main flow channel is a continuous stepped structure, wherein each stepped structure consists of a first flow segment and a second flow segment. The flow direction of the blocking medium in the first flow segment is upward, and the flow direction of the blocking medium in the second flow segment is downward.

[0020] In this technical solution, the main flow channel presents a continuous stepped structure. However, it should be noted that the continuous stepped structure is all at the same level, that is, the step direction remains straight, without a significant upward or downward trend. This ensures that the path of the blocking medium is the same and the travel distance is similar in each stepped structure, avoiding significant consumption of the blocking medium's kinetic energy. Specifically, each stepped structure consists of a first flow segment and a second flow segment, and the flow trends of the blocking medium are different in the first and second flow segments. This structure is used to ensure that the travel distance of the blocking medium is maximized within a limited length (depending on the axial length of the rotor and stator), thereby creating flow conflict between two media in each flow segment. This ensures that the number of barrier regions is sufficient, thus improving the throttling effect.

[0021] In the above technical solution, each of the first flow segment and the second flow segment is provided with at least one of the branch flow channels.

[0022] In this technical solution, as mentioned above, each flow segment forms a flow conflict between two media, thereby ensuring that there are enough barrier regions and thus improving the significance of the throttling and blocking effect.

[0023] In the above technical solution, the main flow channel and the branch flow channel form a closed loop structure along the circumference of the stator or the rotor, so that when the rotor rotates relative to the stator, the main flow channel and the branch flow channel always maintain a consistent relative structure.

[0024] In this technical solution, since the rotor rotates relative to the stator, the main flow channel and the branch flow channel must be closed-loop structures opened along the circumference of the rotor or the stator. When rotation occurs, the structure of the main flow channel and the branch flow channel does not change, thereby achieving structural consistency.

[0025] In the above technical solution, the total pressure of the blocking medium at the inlet satisfies the formula:

[0026] The total pressure of the blocking medium at the outlet satisfies the formula:

[0027] in, This is to meet the requirements for forming a potential barrier.

[0028] In this technical solution, the formation of the potential barrier is explained in the form of a formula for ease of understanding. That is, a higher total pressure is established downstream of the liquid flow direction, forming a potential barrier that ultimately hinders the liquid flow in the inlet direction.

[0029] Additional aspects and advantages of the invention will become apparent in the following description or may be learned by practice of the invention. Attached Figure Description

[0030] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which: Figure 1 This is one of the perspective views of the fluid blockage structure for turbocharging and forming a potential barrier according to the present invention; Figure 2 This is a second perspective view of the fluid blockage structure of the present invention, which turbocharges and forms a potential barrier. Figure 3 This is a front cross-sectional view of the fluid blockage structure for turbocharging and forming a potential barrier according to the present invention; Figure 4 This is a perspective view of the rotor portion in the fluid blockage structure for turbocharging and forming a potential barrier according to the present invention. Figure 5 This is a front view of the rotor portion in the fluid blockage structure for turbocharging and forming a potential barrier according to the present invention; Figure 6 This is a schematic diagram of the throttling effect of the fluid blocking structure that turbocharges and forms a potential barrier according to the present invention.

[0031] in, Figures 1 to 6 The correspondence between the reference numerals and component names in the attached drawings is as follows: 1. Stator section; 2. Rotor section; 3. Guide channel; 301. Main channel; 3011. Main inlet; 3012. Main outlet; 3013. First flow section; 3014. Second flow section; 302. Branch channel; 3021. Branch inlet; 3022. Convergence outlet. Detailed Implementation

[0032] To better understand the above-mentioned objectives, features, and advantages of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0033] 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 therefore the scope of protection of the invention is not limited to the specific embodiments disclosed below.

[0034] The following reference Figures 1 to 6 This describes a fluid blockage structure that turbocharges and forms a potential barrier, according to some embodiments of the present invention.

[0035] Some embodiments of this application provide a fluid blockage structure that turbocharges and forms a potential barrier.

[0036] like Figures 1 to 5 As shown, the first embodiment of the present invention proposes a turbocharged fluid blockage structure that forms a potential barrier, including a stator section 1 and a rotor section 2, and further comprising: A flow channel 3 is formed between the stator section 1 and the rotor section 2, and the blocking medium flows along the path of the flow channel 3 to form an open blocking structure between the stator section 1 and the rotor section 2. The flow channel 3 includes at least a main flow channel 301 and a branch flow channel 302. The branch flow channel 302 is formed on the stator section 1 and the rotor section 2 and is arranged alternately along the path of the main flow channel 301. The blocking medium causes a flow path conflict at the intersection of the branch flow channel 302 and the main flow channel 301 and forms a barrier between the two blocking mediums.

[0037] The present invention proposes a turbocharged fluid blocking structure that forms a potential barrier. The main flow channel 301 of the guide flow channel 3 is formed by the gap between the stator part 1 and the rotor part 2. The blocking medium enters from one end of the guide flow channel 3 and is discharged after passing through the main flow channel 301 and the branch flow channel 302, thus forming an open blocking structure for the blocking medium.

[0038] In existing rotating machinery, the moving parts (rotor 2) and stationary parts (stator 1) are connected. For example, a sealing ring (or similar structure) is usually added between them to ensure the sealing of the blocking medium and prevent leakage. However, this leads to the following disadvantages: 1. It requires a high cleanliness margin for the blocking medium. When particles are present in the blocking medium, it can cause wear on the connection structure or blockage of the blocking medium's flow path, leading to mechanical seal failure; 2. When a blocking medium with high parameters participates in blocking under corresponding high-requirement conditions (such as high temperature or deep cryogenic conditions, high pressure or ultra-high pressure conditions, highly corrosive conditions, etc.), the requirements for each component of the rotating machinery are correspondingly increased, especially the related components involved in the blocking or isolation of the medium, which leads to the failure of the blocking or isolation of the medium and a reduction in the lifespan of the related components.

[0039] Therefore, the open blocking structure in this technical solution allows the stator 1 and rotor 2 to be non-contact structures, thereby making the size of the flow channel 3 (i.e., the gap between the stator 1 and rotor 2) adjustable. This allows for a larger design gap to be used according to the fluid parameters of the blocking medium, thus allowing for a greater cleanliness margin in the blocking medium, and even allowing for the presence of particles or impurities. Furthermore, by eliminating the connection structure between the stator 1 and rotor 2 or related components involved in medium blocking or isolation, this technical solution reduces the limitations imposed by restrictive factors during operation under high operating conditions, thereby improving the versatility of the blocking medium and operating conditions.

[0040] Based on the above, this technical solution divides the flow channel 3 into a main flow channel 301 and a branch flow channel 302. The blocking medium is distributed into two flow paths with different flow directions in the main flow channel 301 and the branch flow channel 302. One part of the flow continues to flow along the main flow channel 301 from the direction of high total pressure to the direction of low total pressure, while the other part of the flow changes its flow direction through the branch flow channel 302 and eventually forms a flow path conflict with the flow in the main flow channel 301 (the flow directions of the two flow streams are opposite or nearly opposite). Because the total pressure of the two flow streams is similar, but their flow directions conflict (opposite or nearly opposite), a significant kinetic energy loss is caused, resulting in a total pressure loss for the incoming flow. Pressure embolism is created in the flow channel, forming a potential barrier and achieving effective flow throttling.

[0041] Furthermore, when the rotor rotates, the flow channel on the rotor ring is a turbine structure. Its inlet flow is forced in by the upstream flow. The impeller flow channel on the rotor ring is designed according to fluid mechanics and has high efficiency. The impeller reverses the inlet flow and applies part of the mechanical energy of the rotor rotation to the fluid through the blades, thereby pressurizing the fluid. The flow direction at the turbine outlet is also opposite to the direction of the incoming flow. According to Bernoulli's theorem, this creates a stronger potential barrier. The strength of this potential barrier is directly proportional to the rotational speed. That is to say, the higher the rotational speed, the stronger the potential barrier and the more significant the throttling.

[0042] The second embodiment of the present invention proposes a turbocharged and barrier-forming fluid blockage structure. Based on the first embodiment, the branch channel 302 has a branch inlet 3021 and a converging outlet 3022 communicating with the main channel 301. The path of the branch channel 302 is part of a ring structure. The blocking medium enters from the branch inlet 3021, flows along the branch channel 302, and flows out from the converging outlet 3022. At this position, it forms a flow path conflict with the blocking medium flowing in the main channel 301.

[0043] In this embodiment, the shape and structure of the branch channel 302 are specifically defined. The branch channel 302 is part of a ring structure. Therefore, when the blocking medium enters the branch channel 302, it will change its flow direction along the path of the ring structure, and thus form a flow conflict with the blocking medium flowing in the main channel 301 at the converging outlet 3022. That is, the flow directions of the two are opposite or nearly opposite, thus forming the aforementioned barrier effect.

[0044] The third embodiment of the present invention proposes a turbocharged and barrier-forming fluid blockage structure, and based on any of the above embodiments, the main flow channel 301 has a main inlet 3011 and a main outlet 3012. The main inlet 3011 is located on the side of the blockage medium with a relatively high total pressure, and the main outlet 3012 is located on the side of the blockage medium with a relatively low total pressure, so as to meet the requirement that the blockage medium flows from the high total pressure side to the low total pressure side of the main flow channel 301.

[0045] In this embodiment, the shape and structure of the main flow channel 301 are specifically defined. Since the blocking medium satisfies the characteristic of the main flow channel 301 flowing from the high total pressure side to the low total pressure side, the main inlet 3011 and the main outlet 3012 are respectively located on the side with relatively high total pressure and relatively low total pressure. Of course, when the relatively high total pressure and relatively low total pressure change, the main inlet 3011 and the main outlet 3012 will change accordingly.

[0046] The fourth embodiment of the present invention proposes a fluid blockage structure that turbocharges and forms a potential barrier, and based on any of the above embodiments, the demand equation for the flow of the blockage medium from the high total pressure side to the low total pressure side of the main flow channel is as follows:

[0047] in, For total pressure, For static pressure, Let ρ be the potential pressure, ρ be the density, and v be the velocity.

[0048] In this embodiment, Bernoulli's total pressure equation is used to explain that fluid can only flow from the direction of higher total pressure to the direction of lower total pressure. Of course, in technical application environments, potential pressure is generally negligible.

[0049] The fifth embodiment of the present invention proposes a turbocharged and barrier-forming fluid blockage structure, and based on any of the above embodiments, the path of the main flow channel 301 is a continuous stepped structure, wherein each stepped structure is composed of a first flow segment 3013 and a second flow segment 3014, the flow direction of the blocking medium in the first flow segment 3013 is ascending, and the flow direction of the blocking medium in the second flow segment 3014 is descending.

[0050] In this embodiment, the main flow channel 301 presents a continuous stepped structure. However, it should be noted that the continuous stepped structure is all at the same level, that is, the step direction remains straight, without any obvious upward or downward trend, to ensure that the path of the blocking medium is the same and the travel distance is similar in each stepped structure, avoiding significant consumption of the blocking medium's kinetic energy. Specifically, each stepped structure consists of a first flow segment 3013 and a second flow segment 3014, and the flow trends of the blocking medium in the first flow segment 3013 and the second flow segment 3014 are different. The above structure is used to ensure that the travel distance of the blocking medium is maximized within a limited length (depending on the axial length of the rotor section 2 and the stator section 1), thereby forming a flow conflict between two media in each flow segment, thus ensuring that the number of barrier regions is sufficient, thereby improving the significance of the throttling effect.

[0051] The sixth embodiment of the present invention proposes a turbocharged and barrier-forming fluid blockage structure, and based on any of the above embodiments, each of the first flow segment 3013 and the second flow segment 3014 is provided with at least one of the branch flow channels 302.

[0052] In this embodiment, as mentioned above, each flow segment forms a flow conflict between two media, thereby ensuring that there are enough barrier regions and thus improving the significance of the throttling effect.

[0053] The seventh embodiment of the present invention proposes a fluid blockage structure that turbocharges and forms a potential barrier. Based on any of the above embodiments, the main flow channel 301 and the branch flow channel 302 form a closed loop structure along the circumference of the stator portion 1 or the rotor portion 2, so that when the rotor portion 2 rotates relative to the stator portion 1, the main flow channel 301 and the branch flow channel 302 always maintain a consistent relative structure.

[0054] In this embodiment, since the rotor 2 rotates relative to the stator 1, the main flow channel and the branch flow channel 302 must be closed-loop structures opened along the circumference of the rotor or the stator. When rotation occurs, the structure of the main flow channel 301 and the branch flow channel 302 does not change, thereby achieving structural consistency.

[0055] The eighth embodiment of the present invention proposes a fluid blockage structure that turbocharges and forms a potential barrier, and based on any of the above embodiments, the total pressure of the blockage medium at the inlet satisfies the formula:

[0056] The total pressure of the blocking medium at the outlet satisfies the formula:

[0057] in, This is to meet the requirements for forming a potential barrier.

[0058] In this technical solution, the formation of the potential barrier is explained in the form of a formula for ease of understanding. That is, a higher total pressure is established downstream of the liquid flow direction, forming a potential barrier that ultimately hinders the liquid flow in the inlet direction.

[0059] It should be noted that this system consumes mechanical work during operation, but considering the limitations imposed by the rotor diameter and speed, the impeller's pressurization capacity is not significant. According to the power equation:

[0060] Where Q is the volumetric flow rate and ρ is the density. P is the boost pressure.

[0061] although The value of P is small, but it is enough to offset the loss along the inlet flow, thereby establishing a stronger and more reliable barrier.

[0062] Of course, actual fluid flow is very complex and influenced by many factors, such as wall roughness and flow channel geometry. Therefore, better performance can be obtained through design optimization of the flow channel and impeller and through experiments.

[0063] In any of the above technical solutions, a preferred embodiment provides supplementary details regarding the outlet end of the blocking medium, wherein: 1. When the medium is completely isolated, there are two basic methods at the outlet: 1.1 The diffusion pressure reducing chamber structure is adopted to extract and return the excess medium. The structural feature is that the entire system is non-contact. 1.2 A conventional low-pressure blocking structure is arranged at the outlet end.

[0064] 2. When complete isolation of the medium is not required, a drainage device can be installed at the outlet end.

[0065] 3. When the medium requires controlled complete isolation and incomplete isolation, the above two solutions can be combined by adding a switching valve.

[0066] The present invention also proposes a specific embodiment of a turbocharged fluid blockage structure that forms a potential barrier, as described in any one of the above eight embodiments, such as... Figure 6As shown, by splitting the blocking medium into the main flow channel and the branch flow channel with a flow ratio of 50:50, and setting up a blocking barrier through flow guidance, it was found that even under static conditions, a single-stage barrier can easily achieve a throttling effect of more than 50%. Therefore, considering the isomorphic 5-stage gradient throttling, the throttling rate at the outlet end will reach 96.8%. Under rotating conditions, due to the intervention of turbocharging, the throttling rate will increase with the increase of speed until it is almost completely blocked.

[0067] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0068] Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this invention shall be included within the scope of protection of this invention.

Claims

1. A turbocharged fluid blockage structure that forms a potential barrier, comprising a stator (1) and a rotor (2), characterized in that, Also includes: A flow channel (3) is formed between the stator (1) and the rotor (2), and the blocking medium flows along the path of the flow channel (3) to form an open blocking structure between the stator (1) and the rotor (2); The flow channel (3) includes at least a main flow channel (301) and a branch flow channel (302). The branch flow channel (302) is formed in the stator section (1) and the rotor section (2) and is arranged alternately along the path of the main flow channel (301). The blocking medium constitutes a flow path conflict and forms a barrier between the two blocking media at the intersection of the branch flow channel (302) and the main flow channel (301). The branch channel (302) has a branch inlet (3021) and a converging outlet (3022) communicating with the main channel (301), and the path of the branch channel (302) is part of a ring structure. The blocking medium enters from the branch inlet (3021) and flows along the branch channel (302) before flowing out from the converging outlet (3022), where it forms a flow path conflict with the blocking medium flowing in the main channel (301). The main flow channel (301) has a main inlet (3011) and a main outlet (3012). The main inlet (3011) is located on the side of the blocking medium with a relatively high total pressure, and the main outlet (3012) is located on the side of the blocking medium with a relatively low total pressure, so as to meet the requirement that the blocking medium flows from the high total pressure side to the low total pressure side of the main flow channel (301). When the rotor rotates, the flow channel on the rotor ring is a turbine structure. Its inlet flow is forced in by the upstream flow. The impeller flow channel on the rotor ring is designed according to fluid dynamics. The impeller reverses the inlet flow and applies part of the mechanical energy of the rotor rotation to the fluid through the blades, thereby pressurizing the fluid. The flow direction at the turbine outlet is also opposite to the direction of the incoming flow. The path of the main flow channel (301) is a continuous stepped structure, wherein each stepped structure is composed of a first flow segment (3013) and a second flow segment (3014). The flow direction of the blocking medium in the first flow segment (3013) is upward, and the flow direction of the blocking medium in the second flow segment (3014) is downward. Each of the first flow segment (3013) and the second flow segment (3014) is provided with at least one of the branch flow channels (302); The total pressure of the blocking medium at the inlet satisfies the formula: The total pressure of the blocking medium at the outlet satisfies the formula: in, This is to meet the requirements for forming a potential barrier.

2. The fluid blockage structure for turbocharging and forming a potential barrier according to claim 1, characterized in that, The main flow channel (301) and the branch flow channel (302) form a closed loop structure along the circumference of the stator (1) or the rotor (2) so that when the rotor (2) rotates relative to the stator (1), the main flow channel (301) and the branch flow channel (302) always maintain a consistent relative structure.

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