Gas flow control equipment
By introducing a high-pressure gas storage tank and an electric regulating valve into the wave energy power generation system, combined with an overflow component and a cleaning device, the problem of airflow instability was solved, the energy conversion rate was improved, and the equipment life was extended.
Patent Information
- Application Number
- CN202511186722.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-25
- Publication Date
- 2025-10-24
AI Technical Summary
The instability of airflow in wave energy power generation systems makes it difficult for turbine blade rotation speed to be stabilized within the design optimal range, resulting in low energy conversion efficiency.
A high-pressure gas storage tank is installed between the rectifier chamber and the turbine unit, equipped with an electric regulating valve and an overflow assembly. By controlling the airflow pressure threshold and overflow pressure relief, the airflow supply to the turbine unit is stabilized. Combined with the cleaning assembly to remove salt spray, airflow stability and equipment lifespan are ensured.
It achieves stable gas supply to the turbine unit, improves energy conversion efficiency, and extends equipment life through salt spray filtration and self-cleaning functions.
Smart Images
Figure CN120830616A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of wave energy power generation system, and particularly relates to a gas flow control device. BACKGROUND
[0002] The wave energy power generation system is a combined device for converting ocean wave energy into electric energy, and its core principle is to drive air compression or mechanical transmission to generate electricity through wave motion. The energy conversion path of the existing wave energy power generation system mainly includes two types: one type is to directly drive the mechanical transmission mechanism (such as gear, connecting rod, etc.) by wave motion, and drive the generator to operate; the other type is to drive the air compression by the water body or piston motion in the air chamber, and drive the turbine to rotate by the compressed air, and then drive the generator to generate electricity. Among them, the wave energy power generation system based on air compression is more widely used in near-shore and off-shore scenes due to its simple structure and low maintenance cost. Its core working process is as follows: when the sea wave rises, the impact force of the wave pushes the air in the air chamber to be quickly compressed to form a high-pressure airflow; the airflow is processed through the rectification chamber to become a stable airflow with one-way flow, and then flows through the turbine (such as impulse turbine, reaction turbine, etc.) to drive the turbine blade to rotate, and finally converts the mechanical energy into electric energy through the generator.
[0003] However, the natural characteristics of wave energy determine that its energy output has significant instability. Specifically, the surge amplitude, period, frequency and other parameters of ocean waves are affected by wind, tides, sea topography and other factors, showing strong randomness and volatility. This instability is directly transmitted to the air compression process of the air chamber: when the wave amplitude is large, the air chamber is severely compressed, and the output airflow has high pressure and fast speed; when the wave amplitude is small, the air chamber is not compressed enough, and the output airflow has low pressure and slow speed. Therefore, the airflow speed entering the turbine device is always in dynamic change, which makes it difficult for the turbine blade speed to stabilize in the designed optimal interval, directly leading to low energy conversion rate of the wave energy power generation system.
[0004] Therefore, the present application is designed to solve the above problems.
[0005] The above content is only used to assist in understanding the technical solutions of the present application, and does not mean to acknowledge that the above content is the closest prior art. SUMMARY
[0006] The purpose of the present application is to solve the above problems, and to provide a gas flow control device.
[0007] In order to solve the above technical problems, the present application adopts the following technical solutions: A gas flow control device, comprising a gas conveying pipe in communication with a rectifying chamber, a high-pressure gas tank for storing high-pressure gas being in communication with one end of the gas conveying pipe away from the rectifying chamber, an air inlet pipe and a gas outlet pipe being provided on the high-pressure gas tank, wherein a first check valve is provided between the gas conveying pipe and the air inlet pipe, and the gas outlet pipe is in communication with a turbine through an electric regulating valve; the electric regulating valve is in communication with a central control system, the system is preset with a minimum pressure threshold A and a maximum pressure threshold B, and the electric regulating valve is controlled to execute the following commands: when the pressure in the high-pressure gas tank is less than the minimum pressure threshold A, the electric regulating valve remains in a closed state; when the pressure in the high-pressure gas tank is between the minimum pressure threshold A and the maximum pressure threshold B, the electric regulating valve is opened to a fixed opening; and when the pressure in the high-pressure gas tank is greater than the maximum pressure threshold B, the opening of the electric regulating valve is reduced.
[0008] Further, the central control system is further preset with a judgment pressure threshold C lower than the maximum pressure threshold B, and an overflow assembly is further provided in communication with the high-pressure gas tank for releasing pressure when the internal pressure is higher than the judgment pressure threshold C, wherein the overflow assembly is in communication with the gas conveying pipe through a return pipe, and a second check valve is provided between the return pipe and the overflow assembly, so that the high-pressure gas tank unidirectionally discharges to the gas conveying pipe.
[0009] Further, the air inlet pipe is eccentrically arranged on the outer wall of the high-pressure gas tank, so that the airflow enters the interior along the tangent line of the inner wall of the high-pressure gas tank, and the bottom end of the high-pressure gas tank is provided with a liquid discharge port for discharging brine.
[0010] Further, a cleaning assembly for cleaning the salt mist attached to the inner wall of the high-pressure gas tank is further provided in the high-pressure gas tank, and the cleaning assembly is driven by the airflow discharged by the overflow assembly.
[0011] Further, the cleaning assembly comprises a driving shaft mounted in the high-pressure gas tank through a bearing, a liquid scraping plate fixedly mounted on the driving shaft and slidingly fitted with the inner wall of the high-pressure gas tank, and a conversion assembly mounted on the high-pressure gas tank for converting the airflow power discharged by the overflow assembly into the rotational power of the driving shaft.
[0012] Further, the overflow assembly comprises an overflow valve body in communication with the top of the high-pressure gas tank, a plug provided in the overflow valve body for plugging the communication port between the overflow valve body and the high-pressure gas tank, and a spring provided between the plug and the inner wall of the overflow valve body.
[0013] Further, the conversion assembly comprises a transmission unit for transmitting the airflow power to the driving shaft, and a power unit provided between the transmission unit and the overflow valve body.
[0014] Further, the transmission unit comprises a gear box arranged on the high-pressure gas tank, a driving gear arranged on an output shaft of the gear box, and a driven gear arranged at an end of a driving shaft and engaged with the driving gear.
[0015] Further, the power unit comprises a turbine vane arranged on an input shaft of the gear box, an overflow pipeline with one end of a sealing sleeve arranged outside the turbine vane and the other end communicated with the second check valve, and a communication pipe for communicating the overflow pipeline with the overflow valve body, wherein the connection port of the communication pipe with the overflow pipeline is located below the turbine vane.
[0016] Further, an annular frame extending inwardly is arranged on the inner wall of the high-pressure gas tank, the surface of the annular frame is sloped to the center side of the bottom of the high-pressure gas tank, the bottom of the annular frame is provided with a liquid guide plate for guiding the liquid flow to converge at the center of the bottom of the high-pressure gas tank, the liquid guide plate has a spacing with the side wall of the high-pressure gas tank, and the gas supply pipe is arranged at the spacing position of the liquid guide plate and the side wall of the high-pressure gas tank.
[0017] Compared with the prior art, the beneficial effects of the present application are as follows: by arranging the high-pressure gas tank between the rectifying chamber and the turbine device, the gas flow is preferentially stored through the high-pressure gas tank, so that there is a certain amount of gas flow for standby for power generation, and then the electric regulating valve is arranged to adjust the opening of the electric regulating valve to realize stable gas supply to the turbine device when the gas supply pressure changes, so that the rotation speed is maintained in a relatively stable range to ensure high energy conversion rate. BRIEF DESCRIPTION OF DRAWINGS
[0018] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the application, and together with the description of the application, explain the application. The drawings are as follows: Figure 1 is a front view of an embodiment of the present application; Figure 2 is a side view of an embodiment of the present application; Figure 3 is a rear view of an embodiment of the present application; Figure 4 is a sectional view of an embodiment of the present application; Figure 5 is a position diagram of a conversion assembly in an embodiment of the present application; Figure 6 is a structure diagram of a conversion assembly in an embodiment of the present application; Figure 7 is an internal diagram of an overflow pipeline and an overflow valve body in an embodiment of the present application; Figure 8 is an internal structure diagram of an overflow valve body in an embodiment of the present application.
[0019] In the figure: 1, gas pipeline; 11, high-pressure gas tank; 12, gas inlet pipe; 13, gas delivery pipe; 14, first check valve; 15, electric regulating valve; 2, return pipeline; 21, second check valve; 3, liquid discharge port; 4, drive shaft; 41, liquid scraping plate; 5, overflow valve body; 51, plug; 52, spring; 53, threaded rod; 54, push plate; 55, runner; 6, gear box; 61, drive gear; 62, driven gear; 7, turbine blade; 71, overflow pipeline; 72, communication pipe; 8, annular frame; 81, liquid guide plate. DETAILED DESCRIPTION
[0020] The technical solutions in the embodiments of the present application will be clearly and completely described below in combination with the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The embodiments in the present application and the features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative work are within the protection scope of the present application.
[0021] As Figures 1-8The gas flow control device shown, including the gas pipeline 1 communicated with the rectifying chamber, the rectifying chamber integrates the forward and reverse movement of the gas flow in the front chamber into a one-way flow of the gas flow to the gas pipeline 1, the end of the gas pipeline 1 away from the rectifying chamber is communicated with the high-pressure gas tank 11, which is used to store the gas delivered from the front end preferentially, the high-pressure gas tank 11 is provided with an inlet pipe 12 and a gas delivery pipe 13, wherein the first check valve 14 is arranged between the gas pipeline 1 and the inlet pipe 12, the gas delivery pipe 13 is communicated to the turbine device through the electric regulating valve 15, the first check valve 14 prevents the backflow of the gas flow in the high-pressure gas tank 11 to the gas pipeline 1, and the electric regulating valve 15 controls the flow rate of the gas flow delivered to the turbine device to maintain the stable power generation of the turbine device; the electric regulating valve 15 is communicated to the central control system, the system is pre-set with a minimum pressure threshold A and a maximum pressure threshold B, the minimum pressure threshold A is the minimum pressure value inside the high-pressure gas tank 11 for starting the system power generation, when the pressure is lower than A, it indicates that the gas flow storage amount in the high-pressure gas tank 11 is insufficient, which is insufficient to meet the standby gas supply amount of the turbine device when the front-end gas flow is insufficient, and when A is reached, the central control system drives the electric regulating valve 15 to open to a fixed opening at this time, at which the power generation system starts to generate power, since the opening is fixed, and the gas pressure in the high-pressure gas tank 11 is sufficient, the stable gas flow rate can be guaranteed, the maximum pressure threshold B is set to prevent the pressure in the high-pressure gas tank 11 from being too large, resulting in the fixed opening state of the electric regulating valve 15, when the pressure in the high-pressure gas tank 11 is higher than B, the opening of the electric regulating valve 15 needs to be adjusted, to ensure that the cross-sectional flow is reduced under the condition of increasing the gas flow rate, and then by limiting the minimum pressure value and the maximum pressure value of the high-pressure gas tank 11 at the same time, the gas flow rate is maintained in a stable interval, to ensure the power generation stability of the turbine device.
[0022] In an embodiment, the central control system is further preset with a judgment pressure threshold C lower than the maximum pressure threshold B, and the high-pressure gas tank 11 is further connected with an overflow assembly, wherein the overflow assembly is connected to the gas pipeline 1 through the backflow pipeline 2, and a second check valve 21 is arranged between the backflow pipeline 2 and the overflow assembly, so that the high-pressure gas tank 11 unidirectionally discharges to the gas pipeline 1. Due to the instability of wave energy, the amount of gas flowing into the high-pressure gas tank 11 is unstable, so when the pressure is greater than the maximum pressure threshold B, the opening of the electric regulating valve 15 is adjusted to adapt to the situation, and the instantaneous response speed is slow, which is easy to lose control and stabilize, so that the overflow device is installed on the high-pressure gas tank 11, so that the pressure in the high-pressure gas tank 11 can be immediately released when it is greater than C, and the preset value of C is lower than the maximum pressure threshold B, and the difference between them is in a small range, that is, when the pressure does not reach B, the discharge begins, which ensures that the electric regulating valve 15 will not immediately execute the closing during the transient increase of the pressure, that is, if the pressure can be stabilized below the maximum pressure threshold B under the condition of the overflow assembly discharging, the electric regulating valve 15 will not be opened, which ensures the stability of the gas flow output speed, and further realizes efficient pressure regulation, and the overall system is more stable.
[0023] In an embodiment, the inlet pipe 12 is eccentrically arranged on the outer wall of the high-pressure gas tank 11, and the high-pressure gas tank 11 is provided with a liquid discharge port 3 at the bottom end for discharging salt water, and an electromagnetic valve and a waste liquid pipeline are installed below the liquid discharge port 3, and the pipeline is connected to the front seawater area, the signal of the electromagnetic valve is connected to the central control system, and the opening and closing period is set, so that the salt water collected in the high-pressure gas tank 11 is discharged at a certain time. Since the wave energy power generation device needs to use the wave surge power of seawater, there is a large amount of salt mist vapor on the sea surface, so the gas flow sent into the turbine device contains a large amount of salt, which will cause the equipment to accelerate corrosion and is not conducive to long-term operation. Therefore, through the arrangement of the high-pressure gas tank 11, the gas flow can be stored in the high-pressure gas tank 11 for a certain period of time under the condition of adjustable gas flow, so that the salt mist in the gas flow can be precipitated, and the inlet pipe 12 is eccentrically arranged, so that the gas flow can enter the inside along the tangent of the inner wall of the high-pressure gas tank 11, thereby forming a cyclone in the high-pressure gas tank 11, improving the contact between the gas flow and the inner wall, and the salt mist in the gas flow can adhere to the inner wall of the high-pressure gas tank 11, thereby achieving the filtration of the salt in the gas flow. The salt water on the inner wall of the high-pressure gas tank 11 will flow to the center of the bottom of the high-pressure gas tank 11 under the action of gravity and be discharged at a certain time under the periodic opening and closing of the electromagnetic valve, so as to immediately clean the filtered salt water.
[0024] In an embodiment, the high-pressure gas tank 11 is also provided with a cleaning assembly for cleaning the salt mist attached to the inner wall, and the cleaning assembly is driven by the gas flow power discharged by the overflow assembly. The cleaning assembly includes a drive shaft 4 mounted on the bearing inside the high-pressure gas tank 11, a liquid scraping plate 41 fixedly mounted on the drive shaft 4 and slidingly fitted with the inner wall of the high-pressure gas tank 11, and a conversion assembly mounted on the high-pressure gas tank 11. The conversion assembly can convert the gas flow power discharged by the overflow assembly into the rotating power of the drive shaft 4, so as to drive the drive shaft 4 to scrape the inner wall of the high-pressure gas tank 11 with the liquid scraping plate 41, thereby sweeping the salt water on the inner wall of the high-pressure gas tank 11 and making it accelerate and gather at the bottom of the high-pressure gas tank 11, so as to ensure that the subsequent salt mist can be efficiently wall-hung, and the gas flow discharged by the overflow is utilized, thereby avoiding waste of energy and enabling the high-pressure gas tank 11 to have stable salt mist filtering capacity and self-cleaning function.
[0025] In an embodiment, the overflow assembly includes an overflow valve body 5 communicating with the top of the high-pressure gas tank 11, a plug 51 provided in the overflow valve body 5 for plugging the communication port between the overflow valve body 5 and the high-pressure gas tank 11, and a spring 52 provided between the plug 51 and the inner wall of the overflow valve body 5. A threaded rod 53 is also threadedly mounted on the overflow valve body 5. The bottom of the threaded rod 53 is provided with a push plate 54, and the end of the spring 52 abuts against the push plate 54. The other end of the threaded rod 53 is provided with a rotating wheel 55, so that the compression degree of the spring 52 can be adjusted by rotating the rotating wheel 55, and the overflow critical pressure value of the high-pressure gas tank 11 is controlled.
[0026] In an embodiment, the conversion assembly includes a transmission unit for transmitting the gas flow power to the drive shaft 4, and a power unit provided between the transmission unit and the overflow valve body 5. The transmission unit includes a gear box 6 provided on the high-pressure gas tank 11, a drive gear 61 mounted on the output shaft of the gear box 6, and a driven gear 62 provided at the end of the drive shaft 4 and engaged with the drive gear 61. The power unit includes a turbine vane 7 provided on the input shaft of the gear box 6, an overflow pipeline 71 sealed at one end outside the turbine vane 7 and communicating at the other end with the second non-return valve 21, and a communication pipe 72 for communicating the overflow pipeline 71 with the overflow valve body 5. The connection port of the communication pipe 72 with the overflow pipeline 71 is located below the turbine vane 7. When the pressure in the high-pressure gas tank 11 is too high, the plug 51 is pushed open, and the overflow is discharged into the overflow valve body 5. The gas flow enters the overflow pipeline 71 through the communication pipe 72 on the overflow valve body 5, passes through the turbine vane 7, and makes the turbine vane 7 rotate at high speed. The rotation of the turbine vane 7 drives the input shaft of the gear box 6 to rotate, and then the torque is increased through the gear set inside the gear box 6, and finally transmitted to the output shaft. The output shaft drives the driven gear 62 to rotate through the drive gear 61 thereon, thereby driving the drive shaft 4, so as to ensure that the high-pressure gas tank 11 can utilize the overflow gas flow power for auxiliary cleaning, thereby avoiding waste of energy.
[0027] In an embodiment, the inner wall of the high-pressure gas tank 11 is provided with an annular frame 8 extending inwardly, the surface of the annular frame 8 slopes to the center of the bottom of the high-pressure gas tank 11, the bottom of the annular frame 8 is provided with a liquid guide plate 81 guiding the liquid flow to converge at the center of the bottom of the high-pressure gas tank 11, the liquid guide plate 81 has a spacing with the side wall of the high-pressure gas tank 11, the gas delivery pipe 13 is arranged at the spacing position between the liquid guide plate 81 and the side wall of the high-pressure gas tank 11, the salt water scraped off by the liquid scraping plate 41 flows to the liquid guide plate 81 through the annular frame 8 and converges at the center of the bottom of the high-pressure gas tank 11, accelerating the collection of the salt water, at the same time, the liquid guide plate 81 shields the connecting port of the gas delivery pipe 13 and the high-pressure gas tank 11, the preferentially entering gas flow extrudes the lower gas flow to bypass the liquid guide plate 81 and enter the gas delivery pipe 13, so as to avoid the entering gas flow to be stagnant in the high-pressure gas tank 11 for a certain period of time to filter the salt mist, and at the same time, the flow path of the gas flow in the high-pressure gas tank 11 is increased and the solid area for salt mist attachment is increased, so as to further filter out the salt in the gas flow and improve the service life of the overall power generation equipment.
[0028] It will be obvious to a person skilled in the art that, without departing from the spirit or essential characteristics of the application, the present application can be implemented in other specific forms. The present embodiments are therefore considered in all respects to be illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the description given above, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims
1. A gas flow control device, comprising a gas conveying pipe (1) in communication with a rectifying chamber, characterized in that: an end of the gas conveying pipe (1) away from the rectifying chamber is in communication with a high-pressure gas storage tank (11) for storing high-pressure gas, the high-pressure gas storage tank (11) is provided with an air inlet pipe (12) and a gas outlet pipe (13), a first check valve (14) is arranged between the gas conveying pipe (1) and the air inlet pipe (12), and the gas outlet pipe (13) is communicated to a turbine device through an electric regulating valve (15); the electric regulating valve (15) is communicated to a central control system, the system is preset with a minimum pressure threshold A and a maximum pressure threshold B, and the electric regulating valve (15) is controlled to execute the following commands: when the pressure in the high-pressure gas storage tank (11) is less than the minimum pressure threshold A, the electric regulating valve (15) remains closed; when the pressure in the high-pressure gas storage tank (11) is between the minimum pressure threshold A and the maximum pressure threshold B, the electric regulating valve (15) is opened to a fixed opening; and when the pressure in the high-pressure gas storage tank (11) is greater than the maximum pressure threshold B, the opening of the electric regulating valve (15) is reduced; the central control system is further preset with a judgment pressure threshold C lower than the maximum pressure threshold B, and an overflow assembly is further arranged in communication with the high-pressure gas storage tank (11) for releasing pressure when the internal pressure is higher than the judgment pressure threshold C, wherein the overflow assembly is communicated to the gas conveying pipe (1) through a return pipe (2), and a second check valve (21) is arranged between the return pipe (2) and the overflow assembly, so that the high-pressure gas storage tank (11) unidirectionally exhausts to the gas conveying pipe (1). The air inlet pipe (12) is eccentrically arranged on the outer wall of the high-pressure gas storage tank (11), so that the airflow enters the interior along the tangent line of the inner wall of the high-pressure gas storage tank (11), and the bottom end of the high-pressure gas storage tank (11) is provided with a liquid outlet (3) for discharging brine. The high-pressure gas storage tank (11) is further provided with a cleaning assembly for cleaning the salt mist attached to the inner wall, and the cleaning assembly is driven by the airflow power discharged by the overflow assembly. The cleaning assembly comprises a drive shaft (4) mounted in the high-pressure gas storage tank (11) through a bearing, a liquid scraping plate (41) fixedly mounted on the drive shaft (4) and slidingly fitted with the inner wall of the high-pressure gas storage tank (11), and a conversion assembly mounted on the high-pressure gas storage tank (11) for converting the airflow power discharged by the overflow assembly into the rotary power of the drive shaft (4). The overflow assembly comprises an overflow valve body (5) in communication with the top of the high-pressure gas storage tank (11), a plug (51) arranged in the overflow valve body (5) for plugging the communication port between the overflow valve body (5) and the high-pressure gas storage tank (11), and a spring (52) arranged between the plug (51) and the inner wall of the overflow valve body (5). The conversion assembly comprises a transmission unit for transmitting the airflow power to the drive shaft (4), and a power unit arranged between the transmission unit and the overflow valve body (5).
2. The gas flow control apparatus according to claim 1, characterized by: 3. The gas flow control apparatus according to claim 1 or 2, characterized by: 4. The gas flow control apparatus according to claim 3, characterized by: 5. The gas flow control apparatus according to claim 4, characterized by: 6. The gas flow control apparatus according to claim 4 or 5, characterized by: 7. The gas flow control device of claim 6, wherein: 8. The gas flow control device of claim 7, wherein: The transmission unit comprises a gear box (6) arranged on the high-pressure gas tank (11), a driving gear (61) mounted on the output shaft of the gear box (6), and a driven gear (62) arranged at the end of the driving shaft (4) and engaged with the driving gear (61).
9. The gas flow control device of claim 8, wherein: The power unit comprises a turbine vane (7) arranged on the input shaft of the gear box (6), an overflow pipeline (71) with one end sealed to the outside of the turbine vane (7) and the other end communicated with the second non-return valve (21), and a communication pipe (72) for communicating the overflow pipeline (71) with the overflow valve body (5), wherein the connecting port of the communication pipe (72) with the overflow pipeline (71) is located below the turbine vane (7).
10. The gas flow control apparatus according to claim 3, characterized by: An annular frame (8) extending inwardly is arranged on the inner wall of the high-pressure gas tank (11), the surface of the annular frame (8) slopes to the center side of the bottom of the high-pressure gas tank (11), the bottom of the annular frame (8) is provided with a liquid guide plate (81) for guiding the liquid flow to converge at the center of the bottom of the high-pressure gas tank (11), the liquid guide plate (81) has a spacing with the side wall of the high-pressure gas tank (11), and the gas delivery pipe (13) is arranged at the spacing position of the liquid guide plate (81) and the side wall of the high-pressure gas tank (11).