410results about "Reaction engines" patented technology

A wind energy plant with a nacelle, a rotor, which features at least one rotor blade adjustable in its blade pitch angle, a central control device for controlling the wind energy plant and a control unit disposed in the rotor for controlling the blade pitch angle of the at least one rotor blade, wherein the central control device and the control unit in the rotor can exchange data with each other via a data link, which comprises at least one first sending and receiving device at the nacelle side and at least one second sending and receiving device at the rotor side, wherein a wireless network connection with a safety-oriented communication protocol is provided between the at least one first sending and receiving device and the at least one second sending and receiving device, and that one monitoring- and communication device at a time is associated to the first and / or the second sending and receiving device, which can monitor the function of the sending and receiving device and initiate a predetermined action in the case of an error.

The utility model belongs to the technical field of power generation equipment, and particularly relates to a speed increasing mechanism which comprises a box body, a speed increasing module is arranged in the box body, the speed increasing module comprises a shell, and a rotating disc and a rotating shaft are arranged in the shell. The rotating disc comprises a central column and a disc, the rotating shaft comprises a shaft rod and a gear, the shaft rod is perpendicular to the central column, the gear is coaxially fixed to the shaft rod, and the gear is meshed with insections on the disc; the rotating disc rotates to drive the shaft rod to rotate synchronously. A plurality of speed increasing modules are provided; and in every two adjacent speed increasing modules, the shaft rod of one speed increasing module is in transmission connection with the central column of the other speed increasing module. According to the utility model, energy obtained by a plurality of speed increasing modules can be concentrated on the shaft rod of one speed increasing module to be output uniformly, and meanwhile, multi-stage speed increasing can be realized.

The present application provides an impulse water turbine, an anti-erosion water bucket and an anti-erosion structure setting method. The water bucket has a double-bowl structure symmetrically along a water distribution edge. The water bucket has a water-impingement surface for bearing the impact of water flow and a backwater surface opposite to the water-impingement surface. The concave-convex points of the water-impingement surface are distributed in an array on both sides of the water distribution edge, the downstream area, the water outlet edge area and the water outlet area. The array of the concave-convex points on the inner surface of the water bucket can form a water film in the concave points under the impact of strong water flow. The water film generates a certain tension, thereby buffering the impact of the silt and protecting the inner surface of the water bucket. The anti-erosion performance of the water bucket of the impulse water turbine under the condition of high silt content can be greatly improved, and the problems of easy erosion, easy fracture and greatly shortened service life of the water bucket of the impulse water turbine under the conditions of high silt, high water head and strong impact force can be effectively solved.

The utility model relates to the technical field of ocean power generation, solves the problems of low efficiency and low mechanical power of an ocean tidal current energy collecting device caused by limitation of bottleneck factors such as changeable and unfixed tidal current directions, low tidal current speed and difficulty in starting in the prior art, and discloses a tidal current energy collecting device based on a cylindrical fluid theory. The outer wall of the center column is sleeved with a plurality of first bearings. The outer wall of the first bearing is sleeved with the cylinder, first cavities are formed in the two sides of the cylinder, a second cavity is formed in the upper end of the cylinder, a power generation device is fixedly embedded in the second cavity, and a detachable cover plate is fixed to the upper end of the second cavity; the fixed rudder is arranged in the first cavity, the tidal current energy collector is arranged in the first cavity, a main flow channel is formed in the side, away from the fixed rudder, of the cylinder, branch flow channels are directly formed in the main flow channel and the first cavity, the flow velocity of tidal current needed by starting of the device is low, and the tidal current energy can be collected in all directions.

The utility model relates to a pipeline generator impeller chamber which is arranged in a pipeline and used for placing an impeller for driving a generator rotor. The impeller chamber comprises a water inlet and a water outlet, the water inlet is connected with the upstream of a pipeline, the water outlet is connected with the downstream of the pipeline, and the inner wall of the impeller chamber comprises two arcs which are different in radius and are concentrically arranged; the water outlet is arranged between the two arcs with different radiuses, and the water inlet of the impeller chamber is lower than the water outlet. Through the irregular circular structure of the impeller chamber, the water flow forms vortex, the kinetic energy of the water flow is fully utilized, and the power generation efficiency can be improved.

The invention provides a runner blade optimization method of a mixed-flow water turbine and a runner. The method comprises the steps that a full-flow-channel three-dimensional model of a flow passage component of the mixed-flow water turbine in the water flow direction is established; a mixed turbulence model is selected, boundary conditions are set, simulation results of the runner under different design working conditions and critical working conditions are obtained, and a core loss area restricting maximum output is determined; setting meridian plane parameters, airfoil section parameters and space distortion parameters of the runner blade according to the position of the core loss area; based on the multiple sets of blade parameters, parameterized models of the runner blades are established respectively; comparing and analyzing simulation results of the plurality of parameterized models under the same working condition, and screening target blade parameters with high relevancy with the maximum output; and based on the target blade parameter, optimizing the runner blade so as to improve the maximum output of the mixed-flow water turbine. Through the optimization method provided by the invention, the problems of insufficient flow field coupling consideration, limited parametric modeling dimension, single optimization target and the like are solved.

The invention relates to the technical field of through-flow turbines, and particularly discloses a through-flow turbine control ring auxiliary sliding bearing and a through-flow turbine. An auxiliary sliding bearing for a control ring of a tubular turbine comprises an anti-wear block and an anti-wear part arranged on the same side as the anti-wear block. The anti-wear block is in sliding fit with the anti-wear part; the anti-wear block and the anti-wear piece are respectively arranged on the control ring and the guide vane outer ring; according to the invention, the connection between the control ring and the guide vane outer ring can be more reliable, and the deflection of the control ring caused by the abrasion of the steel balls on the control ring and the guide vane outer ring groove can be effectively avoided.

A sealing arrangement, for a turbine with a static casing 221 and a runner 222 that rotates relative to the casing, comprises a plurality of parallel dead-end passages 228a, 228b formed within the run

The application provides a flow control method based on three-curved-surface fish scale bionic structure, comprising the following steps: S1, constructing a main structure of an impeller blade, including a suction surface e and a pressure surface f, and fish scale areas g with multiple fish scale bionic structure coupling elements arranged regularly are arranged on the suction surface e and the pressure surface f; S2, constructing and designing a single fish scale bionic structure coupling element, including a bottom surface adhering to a blade surface, a top surface in a fish scale structure, and a rear side cylindrical surface; the top surface comprises two groups of parallel fold surfaces, and each group of fold surfaces is composed of three quadrilateral surfaces; a space rectangular coordinate system is established with a front end point of the bottom surface as an origin, and the fish scale bionic structure coupling element is constructed in the space rectangular coordinate system; and S3, establishing multiple fish scale bionic structure arrangement rules. The application can improve the fluid flow characteristics of the blade surface and reduce noise generation based on the control of flow by bionic structure.

The invention relates to the technical field of flood discharge gates, and discloses a control flood discharge gate of a water conservancy project and a using method thereof.The control flood discharge gate comprises a bottom plate, two side piers fixedly installed on the bottom plate and a flood discharge slope fixedly connected with one end of the bottom plate, a main gate is slidably installed between the two side piers, and a lifting frame is fixedly installed at the upper ends of the two side piers; a steel wire rope is fixedly connected between the output end of the winch and the upper end of the main gate. Water flow drives paddles to move, a rotating shaft drives a rotating disc to rotate, a sliding rod slides towards the edge of the rotating disc along a centrifugal groove under the action of centrifugal force when rotating along with the rotating disc, an arc-shaped plate is continuously limited by the sliding rod to drive a sliding block to move upwards, and at the moment, a pressure sensing plate senses pressure and controls an air cylinder to extend to a corresponding gear; the wedge-shaped block drives the water guide plate to rotate, the end of the water guide plate rotates upwards, the flood interception angle is reduced, and the situation that the load of the water turbine is increased due to excessive water flow in the flood flow channel is prevented.

The invention discloses a mine water level monitoring device with a desilting function, which relates to the technical field of water level monitoring and comprises a monitoring machine body, a monitoring rod, an upper sleeve, a lower sleeve, a buoyancy plate, a sliding mechanism, a magnetic mechanism and a stirring mechanism. The monitoring machine body is installed in a reservoir through an installation part, an intelligent detection sensor module is arranged in the monitoring machine body, the monitoring rod is fixed to the lower portion of the monitoring machine body and inserted into the reservoir, the upper sleeve and the lower sleeve are arranged on the monitoring rod in a spaced mode, and the buoyancy plate is movably installed on the peripheral side of the sleeve. The sliding mechanism opens a lower sleeve water suction port and is in butt joint with the magnetic mechanism; during water pumping, high-pressure water flow impacts the turbine, the magnetic mechanism drives the buoyancy plate to rotate, the stirring mechanism synchronously acts to reduce friction force, the stirring piece is unfolded to stir water in the reservoir, and sludge is mixed in the water and discharged along with drained water, the device achieves synchronous water level monitoring and dredging, manual dredging is not needed, and the labor cost is saved; and stable operation of monitoring equipment is ensured.

The limiting device comprises a crank arm, the crank arm is rotationally connected with a guide vane sleeve flange, a crank arm ring groove is formed in the outer wall of the crank arm, a thrust block is arranged on the guide vane sleeve flange, a thrust head extends out of the thrust block, and the structure of the thrust head is in sliding fit with the crank arm ring groove. The utility model has the following advantages: (1) the external modular design is convenient for intuitively monitoring the wear state and quickly dismounting and replacing, the maintenance-free stop block is welded on the guide vane sleeve flange, and the anti-vibration stability is enhanced by means of the top cover structure; (2) the limiting efficiency is enhanced by double stop blocks, the full opening / closing position of the guide vane is accurately locked, the lifting of the guide vane and the abnormal opening degree are effectively inhibited, and the chain damage is blocked in an accident; (3) an independent dismounting system avoids the interference of associated equipment and ensures the operation safety of the unit; and (4) the adaptability is high, a standardized device can be customized according to the unit scale, and the installed capacity limitation is broken through.

The utility model discloses a fan blade type friction nanometer generator based on seabed ocean current energy, which comprises a shell, fan blades and a friction generator, a power generation cavity and a blade cavity are respectively arranged at two ends in the shell, the power generation cavity and the blade cavity are two mutually independent cavities, the fan blades are rotatably arranged in the blade cavity, the friction generator is arranged in the power generation cavity, and the friction generator is arranged in the friction generator. The fan blades and the friction generator are coaxially arranged and are in transmission connection through the magnetic coupling part; a water flow channel is formed in the shell, a flow guide cover is arranged in front of the fan blades, and water flow enters the water flow channel through the flow guide cover and pushes the fan blades to rotate. By arranging the power generation cavity and the blade cavity which are isolated from each other, the power generation component and the driving component are installed separately, transmission is conducted through the magnetic coupling component, a dynamic sealing structural part does not need to be installed, and the power generation component can be independently installed in the power generation cavity in a sealed mode; and meanwhile, as no dynamic sealing structural member is arranged, the transmission resistance is greatly reduced, and the mechanical loss is reduced.

The present application relates to a kind of adjustable blade type water turbine upper crown leak stop device, including multiple flexible blade type leak stop mechanism, flexible blade type leak stop mechanism includes flexible blade and adjustable electroactive polymer layer, flexible blade is set in runner upper crown gap and runner upper crown outlet position, the inside of flexible blade is provided with adjustable electroactive polymer layer, flexible blade type leak stop mechanism is provided with wireless flow sensor between, the power line of wireless flow sensor and adjustable electroactive polymer layer is connected servo voltage stabilizer feeder respectively, servo voltage stabilizer feeder is connected with lower computer, lower computer and wireless flow sensor are all connected with internet of things intelligent controller communication.This application sets up adjustable electroactive polymer layer, which can adjust posture through servo voltage stabilizer feeder, when water flow enters gap cavity from runner around along upper crown gap, flexible blade provides centrifugal force for water, under the action of centrifugal force, water in upper crown cavity is discharged to achieve leak stop effect.

The invention relates to a guide vane (1) for an impeller of a pump or a turbine, comprising a guide vane body (2) having a leading edge (3), a trailing edge (4), a chord (5) and at least one pivot pin (6), the guide vane (1) being mounted so as to be rotatable about an axis of rotation (7) which is defined by the pivot pin (6). In order to achieve particularly high efficiency, according to the invention at least sections of the chord (5) of the guide vane (1) are spaced apart from the axis of rotation (7) and / or at least sections of the guide vane body (2) have a surface formed by a freeform surface. The invention also relates to a method for designing a guide vane (1) for an impeller of a pump or a turbine, comprising a guide vane body (2) having a leading edge (3), a trailing edge (4), a chord (5) and two pivot pins (6), the guide vane (1) being mounted so as to be rotatable about an axis of rotation (7) which is defined by the pivot pins (6).

The invention discloses a ribbon anti-drag bidirectional blade of a horizontal shaft tidal current energy water turbine, and relates to the technical field of tidal current energy utilization, the ribbon anti-drag bidirectional blade comprises a device main body, the device main body comprises a control assembly and a locking assembly connected with the control assembly, the control assembly comprises a top cover and a second connecting rod, and the top cover is provided with a plurality of first connecting rods; the device has the advantages that a motor in the linkage assembly drives a sliding block on a lead screw to move, then the third connecting rod and the fourth connecting rod are stably driven to conduct transmission, the bearing frame is pushed to drive and control fine adjustment of the surrounding main shaft, and the fine adjustment of the surrounding main shaft is achieved; the control ring is matched to drive the top cover to synchronously act through the bottom ring, the second connecting rod and the first connecting rod, finally the blades on the rotating wheel are driven to rotate around the axes of the blades, and self-adaptive adjustment of attack angles of the multiple blades is achieved.

This invention discloses a decentralized micro-powered rural sewage treatment method, comprising the following steps: S1, treatment unit division: dividing households within a radius of 0.5–5 km into a treatment unit; S2, treatment unit construction: arranging a comprehensive ecological pond at the center of each treatment unit, arranging a purification tank next to each household within the treatment unit, and arranging several concentric purification rings in the middle of the treatment unit, with several micro-powered waterwheels installed on the purification rings; S3, water circulation system construction: S3-1, domestic sewage system construction; S3-2, surface sewage system construction; S4, steady operation. This invention proposes a sewage purification concept based on purification rings, utilizing several ring-shaped purification rings surrounding rural villages to achieve simultaneous and integrated treatment of surface sewage, agricultural irrigation wastewater, livestock wastewater, and garbage.

A radial impeller driven rotating nozzle, water distribution plate, cooling tower and water spraying method, comprising: a flow guide bucket, an impeller mechanism, a water spraying cap and a limiting cover; the impeller mechanism is arranged in the flow guide bucket; the water spraying cap is connected with the impeller mechanism; the limiting cover is connected with the lower side of the flow guide bucket and is rotatably connected with the impeller mechanism; the flow guide bucket comprises spiral flow guide fins for changing the direction of water flow to the radial impact impeller mechanism; the impeller mechanism is used for receiving the direction impact of the water flow out of the flow guide bucket and rotating, and simultaneously rotating the water spraying cap; and the limiting cover is used for rotatably fixing the impeller mechanism. The spiral flow guide fins are adopted, water flow pushes the impeller mechanism blades radially after passing through the spiral flow guide fins, so that the impeller receives greater radial kinetic energy.

A submersible hydraulic assembly (6) for an energy storage plant (1) comprises: • at least one hydraulic machine (12); • at least one first buoyancy chamber (46, 50, 63) filled with at least one first buoyancy element (47, 51, 64); the at least one first buoyancy chamber (46, 50, 63) being configured in such a way that the hydraulic machine (12) is substantially neutrally buoyant when submerged in an environmental liquid. The invention further relates to an energy storage plant (1), to a method for performing maintenance operations on an energy storage plant (1) and to a method for assembling / disassembling an energy storage plant (1).

The invention discloses a throat pipe type pressurization overflow power generation device considering the overflow effect, and aims to solve the problems that an existing pipeline energy recovery device is poor in adaptability, large in hydraulic loss and low in reliability under the variable flow overflow working condition. The device comprises a fixed shell, a built-in turbine assembly, independent sealing type power generation equipment and an adjustable valve plate. By adjusting the angle of the adjustable valve plate in real time, an optimized throat pipe structure is dynamically formed, fluid is rectified and locally pressurized, and the energy conversion efficiency of the turbine is remarkably improved; meanwhile, the valve plate has an environment-friendly function, and the flow speed of an outlet can be regulated and controlled to meet the discharge requirement. The power generation equipment adopts an independent sealing design, so that the influence of severe environments such as silt and moisture is effectively isolated, the operation reliability is greatly improved, and the service life is greatly prolonged. The device is particularly suitable for pipeline systems with large flow and strong variable working conditions, such as an overflow cylinder of a drag suction dredger, and has the advantages of high efficiency, reliability, environmental protection, strong adaptability and the like.

A hydraulic turbine (1) is provided, defining a central axis (1a), a longitudinal plane (1b) on which the central axis (1a) lies, and a transverse axis (1c) normal to the longitudinal plane (1b) and incident with the central axis (1a); and comprising a stator annular body (2) centered with respect to the central axis (1a); a helix (3) arranged inside the body (2) and including a first shaft (30) developing along the central axis (1a), and a plurality of blades (31) connected to the first shaft (30), distributed around the central axis (1a) and each one developing radially to the central axis (1a); two tubular conveyors (4) each one including a first flange (40) apt to be placed in fluid passage connection with an external hydraulic network and defining an outflow axis (4a) on the longitudinal plane (1b) around which the first flange (40) is centered, and a second flange (41) centered with respect to the central axis (1a) and in fluid passage connection with the body (2) at a respective side thereof; wherein the first flange (40) is off-center with respect to the central axis (1a) and it is placed externally to a projection (41') of the second flange (41) parallelly to the central axis (1a) so as not to interfere with the first shaft (30), and the conveyors (4) are arranged axial-symmetrically with respect to the transverse axis (1c) so that the respective outflow axes (4a) are at least mutually parallel.

The invention provides a blade telescopic type flow direction self-adaption underwater power generation device and method, and belongs to the technical field of ocean energy power generation. The device comprises an underwater base system, a direction adjusting and locking system, a blade telescopic type energy capturing system and an energy conversion system. By arranging an annular guide rail base and a revolution stand column and adopting a plug pin type locking structure, controllable steering and direction rigid locking of the device when the water flow direction changes are achieved; the blades capable of stretching and retracting in the radial direction are arranged on the rotating roller, so that the blades are unfolded to capture energy under the power generation working condition and folded to reduce resistance under the reversing or extreme working condition, and therefore the water flow load is reduced; water flow drives the rotating drum to rotate and is transmitted to the generator through the rotating shaft and the speed increaser to obtain electric energy. The device can adapt to variable water flow environments, the operation stability and the power generation efficiency are improved, and the safety and reliability of the device under complex hydrological conditions are enhanced.

The application discloses a multilayer sinusoidal wave closed-loop sea wave water pressurizer, which comprises a sea wave water pressurizer body, wherein the sea wave water pressurizer body comprises a float part, a vertical main shaft rod and a plurality of sinusoidal wave water pressurizer disc groups; the vertical main shaft rod is arranged at the bottom of the float part; the plurality of sinusoidal wave water pressurizer disc groups are sequentially arranged on the vertical main shaft rod from top to bottom and are located below the float part; and two adjacent sinusoidal wave water pressurizer disc groups are communicated with each other. Since the ocean waves move in the form of up-and-down waves, the whole sea wave water pressurizer body can also move up and down under the action of the ocean waves; the plurality of sinusoidal wave water pressurizer disc groups in the sea wave water pressurizer body suck in seawater and pressurize the seawater under the action of the ocean waves, and then the seawater is delivered outward through tail pipes, so that long-distance delivery is realized, and external power is not consumed, which meets the green and environmental protection requirements.

The invention discloses a mounting and measuring device for a water distribution ring pipe of an impulse turbine, which comprises a water wheel disc axis measuring part mounted on a water wheel disc shaft, the water wheel disc shaft is arranged at the axis position of a water wheel disc, and the mounting perpendicularity of the water wheel disc shaft can be detected through the water wheel disc axis measuring part. And a plurality of water spraying branch pipes for guiding water flow to impact the water wheel disc are arranged on the inner side of the water distribution ring pipe, and the water distribution ring pipe is arranged around the water wheel disc shaft. The device is designed according to existing requirements, a measurement basis can be provided for axis installation of the water wheel disc, the water wheel disc rotates more stably, light rays matched with a water flow path are provided on the branch pipe axis measurement component, and the light rays are detected through the light ray detection disc, so that the angle installation accuracy of the water spraying branch pipe is guaranteed; a measurement foundation is provided for water turbine accessory installation, and the installation accuracy is guaranteed.

The invention discloses a bidirectional automatic reversing fluid power generation device which comprises at least two horn mouths, a power generator system, a piston and a channel sealing ring. The horn mouth is connected with a pipeline, and a hole is formed in the pipeline; the generator system is communicated with a pipeline connected with the horn mouth; the piston is arranged in the pipeline between the horn mouths; the channel sealing ring is arranged on the inner wall of the pipeline and matched with the piston to achieve opening and closing of the channel. When fluid enters from one direction, the corresponding piston is pushed to move to open the channel in the direction, meanwhile, the piston in the other direction is pushed to make contact with the channel sealing ring to seal the channel in the direction, the fluid is forced to be guided to a generator system for power generation, and the fluid after acting is discharged from a hole in the channel where the generator is located. Through cooperation of the piston and the channel sealing ring, automatic reversing of the fluid channel is achieved, external control is not needed, the structure is simple, and reliability is high. The device can adapt to a wind power generation scene and a tidal power generation scene at the same time, can also be applied to various scenes such as electric vehicle auxiliary power generation and water surface floating power generation, and has wide applicability and good application prospects.

The invention belongs to the technical field of wave energy power generation control, and provides a wave energy efficient conversion device based on dynamic fixed-point wave gathering and a control method, and the efficient conversion device comprises a first reflected wave adjusting structure, a second reflected wave adjusting structure and a rotation driving unit; the first reflected wave adjusting structure and the second reflected wave adjusting structure can independently rotate around respective rotating shafts, the radial distance between the rotating shafts and the fixed point position is kept unchanged, so that the orientation of the generated reflected wave is independently adjusted, and the fixed point position is located in a constructive interference area of the incident wave and the reflected wave; the rotation driving unit is used for driving the first reflected wave adjusting structure and the second reflected wave adjusting structure to rotate independently. According to the efficient conversion device and the control method, by dynamically adjusting the reflection angles of the two reflected waves, the fixed point position is always located in the constructive interference area of the waves, and efficient conversion of wave energy under various sea conditions is achieved.

The utility model relates to the technical field of hydraulic engineering, and discloses a small hydroelectric generation device for energy mechanical engineering, which comprises a support plate, a protective box fixedly connected to the top of the support plate, a generator body fixedly connected to the top of the support plate, a first belt pulley fixedly connected to the input end of the generator body, and a second belt pulley fixedly connected to the output end of the generator body. A transformer is fixedly connected to the top of the supporting plate, an adjusting power generation mechanism is arranged in the supporting plate, a movable mounting mechanism is arranged outside the supporting plate, in the using process, through rotation of a first threaded rod, the height of the water wheel bucket can be adjusted conveniently, and therefore the requirement for adjustment and use of different water depths is met; and the position of the limiting column can be conveniently adjusted, so that the belt body is limited, unexpected situations such as loosening of the belt body in the using process are avoided, the position of the mounting frame can be conveniently adjusted and limited through movement of the sliding plate, and therefore mounting and using in different using scenes are met.

The invention provides an intelligent water turbine control method based on a digital speed regulator, which comprises the following steps of: forming a first data set by collecting rotating speed frequency, active power and water head signals of a water turbine generator set, and providing a basic data source for a control decision; performing credibility verification on the first data set through a physical rule, generating a verified second data set, and ensuring that the data input into the control logic is accurate and credible; based on the second data set, dynamically selecting at least two control algorithms adaptive to the working condition, fusing the outputs of the algorithms, and calculating to obtain an accurate guide vane opening control instruction, so as to solve the problem of insufficient adaptability of a single algorithm; then the guide vane opening control instruction is converted into a driving signal to operate an electro-hydraulic follow-up system, and adjustment of the guide vane opening is achieved; and finally, guide vane opening feedback is obtained, an instruction and the feedback are compared to generate evaluation data, and control algorithm parameters are adaptively corrected according to the evaluation data, so that the problem that the control effect of a single control algorithm on the water-turbine generator set is poor is solved.

Conventional hydropower plants require significant hydrostatic head to produce sufficient power. As such, there is a need for efficient hydropower plants that may be utilised in sites having a low hyd

A guide vane is installed between a top plate and a bottom plate, a first clamping block and a second clamping block are installed at the upper end and the lower end of the guide vane respectively, the first clamping block is installed in a through groove of the top plate, the second clamping block is installed in a clamping groove of the bottom plate, a first threaded hole is formed in the top of the first clamping block, and a second threaded hole is formed in the bottom of the second clamping block. A first threaded hole is formed in the top plate, a cover plate is mounted on the top plate, and a fixing bolt capable of being in threaded fit with the first threaded hole is mounted on the cover plate. The screw rod can be in threaded fit with the first threaded hole in the first clamping block, and the screw rod can penetrate through the supporting frame and extend out of the supporting frame; the operating handle is arranged at the position above the supporting frame, the operating handle is in threaded fit with the screw rod, and when the operating handle and the screw rod rotate relatively, the guide vane can be driven to move upwards under the sliding fit effect of the first clamping block and the top plate through groove; and the gasket and the guide vane are clamped between the guide vane and the bottom plate when moving upwards to the corresponding position between the top plate and the bottom plate.