CN110344988B - Horizontal shaft tidal current energy water turbine experiment assistor and using method thereof - Google Patents
Horizontal shaft tidal current energy water turbine experiment assistor and using method thereof Download PDFInfo
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- CN110344988B CN110344988B CN201910633676.7A CN201910633676A CN110344988B CN 110344988 B CN110344988 B CN 110344988B CN 201910633676 A CN201910633676 A CN 201910633676A CN 110344988 B CN110344988 B CN 110344988B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B11/00—Parts or details not provided for in, or of interest apart from, the preceding groups, e.g. wear-protection couplings, between turbine and generator
- F03B11/008—Measuring or testing arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/12—Blades; Blade-carrying rotors
- F03B3/126—Rotors for essentially axial flow, e.g. for propeller turbines
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/12—Blades; Blade-carrying rotors
- F03B3/128—Mounting, demounting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03B—MACHINES OR ENGINES FOR LIQUIDS
- F03B3/00—Machines or engines of reaction type; Parts or details peculiar thereto
- F03B3/12—Blades; Blade-carrying rotors
- F03B3/14—Rotors having adjustable blades
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
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Abstract
The invention discloses a horizontal shaft tidal current energy water turbine experimental assistor and a using method thereof, belonging to the field of water turbine experimental assistor equipment, the horizontal shaft tidal current energy water turbine experimental assistor and the using method thereof can control the rotating angles of multi-stage rods to be consistent under the condition of controlling the initial positions of blades screwed into positioning holes to be consistent each time by the combined action of comparison scales and extension comparison lines, an initial guide groove and an initial fixed block, thereby effectively reducing the error of the depth of the root part of each blade screwed into the positioning holes, improving the accuracy of the experiment, simultaneously forming a recessive clamping block between spiral convex strips under the action of a soft positioning double dynamic changing layer under the impact of water flow to limit the rotation of the multi-stage rods, and ensuring that the inflow angle cannot be increased or decreased in the whole experimental process, the accuracy of experimental data is improved.
Description
Technical Field
The invention relates to the field of water turbine experiment auxiliary equipment, in particular to a horizontal shaft tidal current energy water turbine experiment auxiliary device and a using method thereof.
Background
Tidal current energy is a renewable energy source which is the most active branch of the energy development technology field under the dual pressure of energy shortage and environmental deterioration. The tidal current energy water turbine is a core component of a tidal current power generation system, and can be divided into a horizontal shaft and a vertical shaft according to the structural operation condition.
The tidal current energy water turbine is different from the traditional water turbine of a hydroelectric power station in working principle, is a water turbine without pressure drop or low water head, is similar to the basic principle of a wind turbine, converts fluid kinetic energy into mechanical energy, and is called as an underwater windmill. The blade is a core component of the water turbine, and the profile of the blade (referred to as blade profile in the industry for short), the appearance structure, the surface roughness, the material characteristics and the like directly influence the hydraulic performance of the water turbine. In order to develop and research the blades suitable for the tidal current energy water turbine, experimental research work is very basic and necessary, and the existing theoretical analysis and numerical calculation methods cannot be used for replacing the experimental research work.
The water turbine is driven by tidal current water power to convert tidal current kinetic energy into electric energy, the generated energy is closely related to the hydraulic characteristics of the tidal current energy water turbine, and the structural parameters (the number of blades and the inflow angle) of the tidal current energy water turbine have great influence on the hydraulic characteristics of the tidal current energy water turbine. At present, the influence evaluation of structural parameters (the number of blades and the inflow angle) of a horizontal axis tidal current energy water turbine on the hydraulic performance of the water turbine mainly refers to the design experience of a wind turbine, but because air and water are different, the influence of the difference of viscosity and compressibility on the hydraulic performance cannot be accurately verified, so that the influence rule of the number of blades and the inflow angle on the performance of the water turbine is summarized through an indoor model test of the horizontal axis tidal current energy water turbine, and the improvement of the utilization rate of tidal current energy of the water turbine is necessary.
The invention discloses a horizontal shaft tidal current energy water turbine experimental device and an experimental method thereof, and provides the horizontal shaft tidal current energy water turbine experimental device, which comprises a support, a fixed cabin fixed at the top end of the support and an impeller arranged at the end part of the fixed cabin through a connecting shaft, wherein the impeller comprises blades, a sliding block, an impeller front disc and an impeller rear disc which are connected through the connecting shaft by penetrating through the axis, corresponding circumferential rails are arranged on the opposite end surfaces of the impeller front disc and the impeller rear disc, the sliding block slides along the rails in a gap between the end surfaces, and positioning holes are arranged on the circumferential surface of the connecting shaft in the gap; the root of the blade is provided with a fixed shaft, the sliding block penetrates through a sliding hole for the fixed shaft to penetrate through along the radial direction, the blade slides to the position of the positioning hole through the sliding block, and the fixed shaft penetrates through the sliding hole of the sliding block and is embedded into the positioning hole. This device is installed on open basin, during the experiment, changes the incoming flow angle through changing the blade quantity of installing on the impeller and rotating vane, can simulate the influence that horizontal axis trend can hydraulic turbine blade quantity and incoming flow angle to hydraulic turbine hydrodynamic characteristic more really, and simple structure reduces the experiment cost.
But because the regulation of incoming flow angle makes the degree of depth of blade root embedding locating hole realize through the rotation, but this kind of mode, artificial when the rotation control embedding degree of depth, the error is great, can not guarantee that the embedding degree of depth of every blade is all unanimous, make the incoming flow angle of every blade have the difference, lead to the experimental result accuracy to receive the influence, and simultaneously, when the experiment, rivers can produce the impact force to the blade, if the rivers direction is unanimous with the rotatory direction that advances the locating hole of blade, then easily lead to the degree of depth that the blade root embedded the locating hole deepens gradually, if the rivers direction is opposite with the rotatory direction that advances the locating hole of blade, then easily lead to, the degree of depth that the blade root embedded the locating hole becomes shallow gradually, make the incoming flow angle can change in the experimentation, further influence the accuracy of experimental data.
Disclosure of Invention
1. Technical problem to be solved
Aiming at the problems in the prior art, the invention aims to provide an experimental auxiliary device for a horizontal axis tidal current energy water turbine and a using method thereof, which can realize the experimental auxiliary device by the combined action of a contrast scale, an extension contrast line, an initial guide groove and an initial fixed block, under the condition of controlling the initial positions of the blades screwed into the positioning holes to be consistent each time, the rotating angles of the multistage rods are controlled to be consistent, thereby effectively reducing the error of the depth of each blade root screwed into the positioning hole, improving the accuracy of the experiment, simultaneously under the action of the soft positioning double-acting variable layer, under the impact of water flow, a recessive fixture block can be formed between the spiral raised strips to limit the rotation of the multi-stage rod, and the faster the experimental water flow is, the better the limiting and locking effect of the recessive fixture block on the multi-stage rod is, therefore, the inflow angle is effectively ensured not to be increased or decreased in the whole experiment process, and the accuracy of experiment data is improved.
2. Technical scheme
In order to solve the above problems, the present invention adopts the following technical solutions.
The utility model provides a horizontal axis trend can hydraulic turbine experiment assistor, includes the supplementary spacing ring of fixed mounting on the impeller of the hydraulic turbine and connects the multistage pole on the blade, it has a plurality of locating holes that the equidistance distributes that do not excavate on the impeller, the tip and the locating hole phase-match of blade are kept away from to the multistage pole, supplementary spacing ring is located between blade and the impeller, it has a plurality of dysmorphism holes to excavate on the supplementary spacing ring, and is a plurality of dysmorphism hole respectively with the position phase-match of a plurality of locating holes, dysmorphism hole includes rectangular hole portion and bulb portion, the multistage pole includes from top to bottom fixed connection's spacing locking section, non-threaded section and screw thread section in proper order, screw thread section and locating hole threaded connection, the inner wall in the right side of bulb portion excavates initial guide way, non-threaded section right-hand member fixedly connected with, the outer end of the multistage rod is sleeved with an opposite sex control rod matched with the special-shaped hole, the opposite sex control rod is positioned on the upper side of the non-threaded section, soft positioning double-acting variable layers are arranged at the positions of the special-shaped hole and the opposite sex control rod, the rotating angles of the multistage rod are controlled to be consistent under the combined action of a contrast scale and an extension contrast line, an initial guide groove and an initial fixed block under the condition of controlling the initial positions of the blades screwed into the positioning holes to be consistent each time, so that the error of the depth of the root part of each blade screwed into the positioning holes is effectively reduced, the accuracy of an experiment is improved, meanwhile, under the action of the soft positioning double-acting variable layers, a recessive clamping block can be formed between the spiral protruding strips under the impact of water flow, the rotation of the multistage rod is limited, the faster the flow of the experiment is, the limiting and locking effect of the recessive clamping block on the multistage rod is better, so that, the accuracy of experimental data is improved.
Further, the bulb portion outside is equipped with the contrast scale, the contrast scale is carved on supplementary spacing ring, and is located the initial guide way outside, and after rotatory whole circle, the contrast scale is convenient for when the installation blade, and the rotation angle of non-whole circle is convenient for control every blade is unanimous or the phase difference is minimum.
Furthermore, the contrast scale is fan-shaped structure, and sectorial central angle is no longer than, and when being convenient for control blade installation, the rotation angle control of non-whole circle improves the convenience of multistage pole turned angle's control within the half-circle.
Furthermore, the distance between the initial fixed block and the lowest end of the multi-stage rod is consistent with the distance between the auxiliary limiting ring and the surface of the impeller, so that when the initial fixed block penetrates out from the lower part of the initial guide groove, the thread section is just positioned at the orifice of the positioning hole, and the initial fixed block can play the effect of guiding the blade installation and ensuring that the position of the initial screwed-in positioning hole is the same under the condition that the rotation of the multi-stage rod is not influenced.
Further, soft location double acting becomes the layer including fixed connection respectively inside and outside the opposite sex control lever both sides become the layer with change the layer outward and the cambered surface of a plurality of fixed connection at the bulb portion inner wall is rectangular, a plurality of the arc coil and the multistage pole phase-match that the rectangular summit of cambered surface constitutes for when the opposite sex control lever injects the dysmorphism downthehole, the opposite sex control lever surface can contact with the cambered surface is rectangular.
Further, the inner wall of opposite sex control lever is covered completely to the interior change layer for the interior change layer can all play limiting displacement all around to the surface of multistage pole, makes the multistage pole hardly take place to rotate or squint under the rivers effort, the surface at the arc surface of opposite sex control lever is covered to the exterior change layer, and there is the edges and corners in the rectangle end of opposite sex control lever, and when its itself matches with special-shaped hole, just very difficult removal covers at the arc surface, further reduces the skew of opposite sex control lever in special-shaped hole on the one hand, and the limiting displacement of the supplementary interior change layer of on the other hand to multistage pole further increases the gag lever post extrusion force, makes it hardly remove.
Further, it has the super wear-resisting rubber of non-Newtonian fluid to make by inside packing in outer change layer and the interior change layer, and the filling thickness of non-Newtonian fluid is 2-3 times of super wear-resisting rubber wall thickness for in the experimentation, the multistage pole receives the impact force of rivers, outer change layer and the quick stiffening thickening in interior change layer this moment, thereby realize restriction multistage pole pivoted effect, can effectively restrict the position of opposite sex control lever simultaneously, make it hardly take place the aversion under the rivers effect, and then improve the effect of this assistor to improving experimental stability.
Furthermore, the outer surface of the limiting locking section is marked with an extension reference line in the vertical direction, and the end point of the extension reference line is located at the vertical central line of the initial fixed block, so that the initial position of the extension reference line and the initial position of the comparison scale are the same, the error of the depth of the root embedded positioning hole of the blade judged through the position difference of the two in the later stage is reduced, and the accuracy of the later stage experiment is improved.
Further, many protruding strips of spiral of spacing locking section surface fixed connection, and many the equal spiral distribution of protruding strip of spiral is on spacing locking section surface, and the clearance that forms between many protruding strips of spiral can hold the internal change layer for when not using, the internal change layer is soft between the space of protruding strip of spiral, after the atress, becomes hard the thickening rapidly, and then produces spacing locking nature to the bull stick.
A horizontal axis tidal current energy water turbine experiment assistor comprises the following use methods:
s1, firstly, adjusting the position of the auxiliary limiting ring to enable a plurality of special-shaped holes on the auxiliary limiting ring to correspond to the positioning holes;
s2, aligning the initial fixed block on the multi-stage rod with the position of the initial guide groove so as to insert the multi-stage rod into the positioning hole, when the initial fixed block penetrates out of the lower part of the initial guide groove, enabling the thread section to be just positioned at the orifice of the positioning hole, adjusting the opposite-nature control rod to be positioned above the special-shaped hole, and screwing the multi-stage rod through the blade so as to enable the blade to be installed on the impeller;
s3, judging a deflection angle by extending the position deviation of the comparison scale of the comparison line compared with the middle part according to the requirement, and adjusting the inflow angle;
s4, when the inflow angle is determined, slowly moving the opposite sex control lever downwards to be clamped into the rectangular hole part, and simultaneously clamping the soft inner variable layer deformation into the gaps between the spiral protruding strips and clamping the soft outer variable layer deformation into the plurality of arc-surface strips;
s5, when the blade rotates under the action of water flow, the multistage rod is stressed to cause the outer variable layer and the inner variable layer to be hardened and thickened, the hardened outer variable layer and the hardened inner variable layer form a hidden clamping block, so that the rotation of the multistage rod is limited, and the blade is effectively prevented from deviating under the action of water flow.
3. Advantageous effects
Compared with the prior art, the invention has the advantages that:
(1) this scheme can be through contrast scale and extension compare line and initial guide way and under the combined action of initial fixed block, under the unanimous condition of initial position of blade screw in locating hole at every turn of control, control multistage pole pivoted angle keeps unanimous, and then effectively reduce the error of the degree of depth of every blade root screw in locating hole, thereby improve the accuracy of experiment, simultaneously under the effect on soft location double dynamic layer, under the water impact, can form recessive fixture block between the protruding strip of spiral, restrict the rotation of multistage pole, and the experiment rivers are faster, recessive fixture block is better to the effect of the spacing locking of multistage pole, thereby effectively ensure that the angle of flow can not grow or diminish in whole experimentation, improve the degree of accuracy of experimental data.
(2) The bulb portion outside is equipped with the contrast scale, and the contrast scale is carved on supplementary spacing ring, and is located the initial guide way outside, and after rotatory whole circle, the contrast scale is convenient for when the installation blade, and the rotation angle of non-whole circle is convenient for control every blade is unanimous or the phase difference is minimum.
(3) The contrast scale is fan-shaped structure, and sectorial central angle is no longer than, and when being convenient for control blade installation, the rotation angle control of non-whole circle improves the convenience of multistage pole turned angle's control within the half-turn.
(4) The distance between the initial fixed block and the lowest end of the multistage rod is consistent with the distance between the auxiliary limiting ring and the surface of the impeller, so that when the initial fixed block penetrates out from the lower part of the initial guide groove, the thread section is just positioned at the orifice of the positioning hole, and the initial fixed block can play the effect of guiding the blade installation and ensuring that the position of the initial screwed-in positioning hole is the same under the condition that the rotation of the multistage rod is not influenced.
(5) Soft location double acting becomes the layer including fixed connection respectively inside and outside the opposite sex control lever both sides become the layer with change the layer outward and the cambered surface of a plurality of fixed connection at the bulb portion inner wall is rectangular, the arc coil and the multistage pole phase-match that the rectangular summit of a plurality of cambered surfaces constitutes for when the opposite sex control lever injects the dysmorphism downthehole, opposite sex control lever surface can contact with the cambered surface is rectangular.
(6) The inner wall that the internal change layer covers the opposite sex control lever completely, make the internal change layer all play limiting displacement around can be to the surface of multistage pole, make the multistage pole hardly take place to rotate or squint under the rivers effort, the external change layer covers the surface at the arc surface of opposite sex control lever, there is the edges and corners in the rectangle end of opposite sex control lever, when its itself matches with the dysmorphism hole, just very difficult removal, cover at the arc surface, further reduce the skew of opposite sex control lever in the dysmorphism is downthehole on the one hand, the limiting displacement of the internal change layer to multistage pole in the on the other hand is supplementary, further increase the extrusion force to the gag lever post, make it hardly remove.
(7) Outer layer and interior change layer are made by the super wear-resistant rubber that inside packing has non-Newtonian fluid, and non-Newtonian fluid's packing thickness is 2-3 times of super wear-resistant rubber wall thickness, make in the experimentation, the multistage pole receives the impact force of rivers, outer layer and the quick stiffening thickening in interior change layer this moment, thereby realize restricting the effect of multistage pole pivoted, can effectively restrict the position of opposite sex control lever simultaneously, make it hardly take place to shift under the rivers effect, and then improve the effect of this assistor to improving experimental stability.
(8) The outer surface of the limiting locking section is marked with an extension reference line in the vertical direction, and the end point of the extension reference line is located at the vertical central line of the initial fixed block, so that the initial position of the extension reference line and the comparison scale is the same, the error of the depth of the root embedded positioning hole of the blade judged through the position difference of the two in the later stage is reduced, and the accuracy of the later stage experiment is improved.
(9) Many spiral protruding strips of spacing locking section external surface fixedly connected with, and many spiral protruding strip equal spiral distribute at spacing locking section surface, become the layer in the clearance that forms between many spiral protruding strips can hold for when not using, become the layer in and be soft between the space of spiral protruding strip, after the atress, become hard the thickening rapidly, and then produce spacing locking nature to the bull stick.
Drawings
FIG. 1 is a schematic structural view of an auxiliary stop collar of the present invention;
FIG. 2 is a schematic side view of the auxiliary retainer ring of the present invention installed on an impeller;
FIG. 3 is a schematic structural view of the front side of the auxiliary limit ring of the present invention when installed on the impeller;
FIG. 4 is a schematic side view of the auxiliary stop collar of the present invention;
FIG. 5 is a schematic view of the structure of the shaped hole portion of the present invention;
FIG. 6 is a schematic view of the structure at B in FIG. 5;
FIG. 7 is a schematic view of the construction of the multistage bar of the present invention;
FIG. 8 is a schematic view of the construction of the opposite sex control stick of the present invention when it is fitted over a multistage stick;
FIG. 9 is a schematic structural view of a cross section of the opposite sex control rod of the present invention;
fig. 10 is a schematic view of the structure at a in fig. 9.
The reference numbers in the figures illustrate:
the auxiliary limiting ring comprises an auxiliary limiting ring 1, a blade 2, a special-shaped hole 3, a rectangular hole part 31, a spherical hole part 32, a limiting locking section 41, a threaded section 42, a non-threaded section 43, a spiral protruding strip 5, an opposite-nature control rod 6, an initial guide groove 71, an initial fixed block 72, an arc strip 8, an outer variable layer 91 and an inner variable layer 92.
Detailed Description
The drawings in the embodiments of the invention will be combined; the technical scheme in the embodiment of the invention is clearly and completely described; obviously; the described embodiments are only some of the embodiments of the invention; but not all embodiments, are based on the embodiments of the invention; all other embodiments obtained by a person skilled in the art without making any inventive step; all fall within the scope of protection of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1:
referring to fig. 1-3, an experimental auxiliary device for a horizontal axis tidal current energy water turbine comprises an auxiliary limiting ring 1 fixedly mounted on an impeller of the water turbine and a multistage rod connected to a blade 2, wherein a plurality of locating holes distributed at unequal intervals are formed in the impeller, the end, far away from the blade 2, of the multistage rod is matched with the locating holes, the auxiliary limiting ring 1 is located between the blade 2 and the impeller, a plurality of special-shaped holes 3 are formed in the auxiliary limiting ring 1, and the special-shaped holes 3 are respectively matched with the locating holes.
Referring to fig. 4-5, the special-shaped hole 3 includes a rectangular hole portion 31 and a spherical hole portion 32, an initial guide groove 71 is cut on the right inner wall of the spherical hole portion 32, a contrast scale is arranged on the outer side of the spherical hole portion 32, the contrast scale is engraved on the auxiliary limiting ring 1 and is located on the outer side of the initial guide groove 71, after the blades are completely rotated, the contrast scale facilitates the rotation angle of the incomplete circle when the blades are installed, the rotation angle of each blade is controlled to be consistent or have a small phase difference, the contrast scale is of a fan-shaped structure, the central angle of the fan-shaped structure is not more than 180 °, the rotation angle of the incomplete circle is controlled to be within a half circle when the blades are installed, and the convenience in controlling the rotation angle.
Referring to fig. 7, the multi-stage rod includes a limit locking section 41, an unthreaded section 43 and a threaded section 42 which are fixedly connected in sequence from top to bottom, the threaded section 42 is in threaded connection with the positioning hole, an initial fixed block 72 is fixedly connected to the right end of the unthreaded section 43, an initial guide groove 71 is matched with the initial fixed block 72, referring to fig. 8, an opposite sex control rod 6 matched with the irregular hole 3 is sleeved on the outer end of the multi-stage rod, the opposite sex control rod 6 is located on the unthreaded section 43, the distance from the initial fixed block 72 to the lowest end of the multi-stage rod is consistent with the distance from the auxiliary limiting ring 1 to the surface of the impeller, so that when the initial fixed block 72 penetrates out from the lower part of the initial guide groove 71, the threaded section 42 is just located at the opening of the positioning hole, and the initial fixed block 72 can achieve the effects of guiding the installation of the impeller.
Referring to fig. 6 and 8-9, a soft positioning double acting layer is arranged at the special-shaped hole 3 and the special-shaped control rod 6, the soft positioning double acting layer comprises an inner changing layer 92 and an outer changing layer 91 which are respectively and fixedly connected to the inner side and the outer side of the special-shaped control rod 6 and a plurality of arc strips 8 which are fixedly connected to the inner wall of the ball hole part 32, an arc coil formed by the vertexes of the arc strips 8 is matched with the multi-stage rods, so that when the special-shaped control rod 6 is inserted into the special-shaped hole 3, the outer surface of the special-shaped control rod 6 can be contacted with the arc strips 8, the inner changing layer 92 completely covers the inner wall of the special-shaped control rod 6, the inner changing layer 92 can limit the periphery of the surface of the multi-stage rods, the multi-stage rods are difficult to rotate or deviate under the action of water flow, the outer changing layer 91 covers the surface of the arc surface of the special-shaped control rod 6, an edge angle, just hardly remove, cover at the arc surface, on the one hand further reduce the skew of taking place in dysmorphism hole 3 of opposite sex control lever 6, on the other hand supplementary interior change layer 92 is to the limiting displacement of multistage pole, further increase the extrusion force to the gag lever post, make it hardly remove, outer change layer 91 and interior change layer 92 are made by the super wear-resistant rubber that inside packing has non-Newtonian fluid, and the packing thickness of non-Newtonian fluid is 2-3 times of super wear-resistant rubber wall thickness, make in the experimentation, the multistage pole receives the impact force of rivers, outer change layer 91 and interior change layer 92 harden the thickening fast this moment, thereby realize the pivoted effect of restriction multistage pole, can effectively restrict the position of opposite sex control lever 6 simultaneously, make it hardly take place the aversion under the rivers effect, and then improve the effect of this assistor to improving experiment stability.
Referring to fig. 7-8, the outer surface of the limiting locking section 41 is marked with an extension reference line in the vertical direction, the end point of the extension reference line is located at the vertical central line of the initial fixed block 72, so that the initial position of the extension reference line and the reference scale is the same, thereby reducing the error of judging the depth of the root part of the blade 2 embedded into the positioning hole through the position difference between the two in the later stage, and further improving the accuracy of the later stage experiment, the outer surface of the limiting locking section 41 is fixedly connected with a plurality of spiral raised strips 5, and the spiral raised strips 5 are spirally distributed on the surface of the limiting locking section 41, the gap formed between the spiral raised strips 5 can accommodate the inner variable layer 92, so that when the inner variable layer 92 is not used, the gap between the spiral raised strips 5 is soft, and when the force is applied, the inner variable layer rapidly becomes hard and thick, and further generates limiting locking performance on the multi-stage.
A horizontal axis tidal current energy water turbine experiment assistor comprises the following use methods:
s1, firstly, adjusting the position of the auxiliary limiting ring 1 to ensure that the plurality of special-shaped holes 3 on the auxiliary limiting ring 1 correspond to the positioning holes;
s2, aligning the initial fixed block 72 on the multi-stage rod with the position of the initial guide groove 71 so as to insert the multi-stage rod into the positioning hole, when the initial fixed block 72 penetrates out of the lower part of the initial guide groove 71, the thread section 42 is just positioned at the hole opening of the positioning hole, at the moment, the opposite-nature adjusting control rod 6 is adjusted to be positioned above the special-shaped hole 3, and then screwing the multi-stage rod through the blade 2 so as to enable the blade 2 to be installed on the impeller;
s3, judging a deflection angle by extending the position deviation of the comparison scale of the comparison line compared with the middle part according to the requirement, and adjusting the inflow angle;
s4, when the inflow angle is determined, the opposite sex control lever 6 is slowly moved downwards to be clamped into the rectangular hole part 31, and simultaneously the soft inner changing layer 92 is deformed and clamped into the gaps between the spiral protruding strips 5, and the soft outer changing layer 91 is deformed and clamped between the arc surface strips 8;
s5, when the blade 2 rotates under the action of water flow, the multistage rod is stressed, the outer changing layer 91 and the inner changing layer 92 are all hardened and thickened, the hardened outer changing layer 91 and the hardened inner changing layer 92 form a recessive clamping block at the moment, the rotation of the multistage rod is limited, the water flow speed is higher, the soft positioning double-acting changing layer is hardened and is higher and thicker, the limiting effect on the multistage rod is higher, the displacement phenomenon caused by the water flow acting force in the using process of the blade 2 is effectively prevented, the inflow angle is effectively prevented from being increased or reduced in the whole experimental process, and the accuracy of experimental data is improved.
Can compare under line and the combined action of initial guide way 71 and initial fixed block 72 through contrast scale and extension, under the unanimous condition of initial position of the every blade 2 screw in locating hole of help, control multistage pole pivoted angle keeps unanimous, and then effectively reduce the error of the degree of depth of every blade 2 root screw in locating hole, thereby improve the accuracy of experiment, simultaneously under the effect on soft location double dynamic layer, under water impact, can form recessive fixture block between spiral protruding strip 5, restrict the rotation of multistage pole, and the experiment rivers are faster, recessive fixture block is better to the effect of the spacing locking of multistage pole, thereby effectively ensure that the angle of flow can not grow or diminish in whole experimentation, improve the degree of accuracy of experimental data.
The above; but are merely preferred embodiments of the invention; the scope of the invention is not limited thereto; any person skilled in the art is within the technical scope of the present disclosure; the technical scheme and the improved concept of the invention are equally replaced or changed; are intended to be covered by the scope of the present invention.
Claims (7)
1. The utility model provides a horizontal axis tidal current energy water turbine experiment assistor, includes auxiliary spacing ring (1) and the multistage pole of connection on blade (2) of fixed mounting on the impeller of the hydraulic turbine, it has a plurality of locating holes that do not equidistance distributes to dig on the impeller, the tip and the locating hole phase-match that blade (2) were kept away from to multistage pole, auxiliary spacing ring (1) is located between blade (2) and the impeller, its characterized in that: the utility model discloses a special-shaped hole, including supplementary spacing ring (1), dig on the supplementary spacing ring (1) have a plurality of special-shaped hole (3), a plurality of special-shaped hole (3) respectively with the position phase-match of a plurality of locating holes, special-shaped hole (3) include rectangle hole portion (31) and bulb portion (32), multistage pole is including from top to bottom fixed connection's spacing locking section (41), non-threaded section (43) and threaded section (42), threaded section (42) and locating hole threaded connection, the bulb portion (32) right side inner wall is opened and is dug initial guide way (71), non-threaded section (43) right-hand member fixedly connected with initial fixed block (72), initial guide way (71) and initial fixed block (72) phase-match, multistage pole outer pot head is equipped with special-shaped hole (3) assorted opposite sex control pole (6), opposite sex control pole (6) are located non-threaded section (43) upside, special-shaped hole (3) and opposite sex control pole (6) department are equipped with soft location double, soft location double acting becomes the layer including respectively fixed connection in the foreign nature control lever (6) inside and outside both sides become layer (92) and outer change layer (91) and a plurality of fixed connection in the rectangular (8) of cambered surface of bulb portion (32) inner wall, a plurality of the arc coil and the multistage pole phase-match that the summit of the rectangular (8) of cambered surface constitutes interior change layer (92) cover the inner wall of foreign nature control lever (6) completely, outer change layer (91) cover the surface at the arc surface of foreign nature control lever (6) outer change layer (91) and interior change layer (92) are made by the super wear-resistant rubber that the inside packing has non-Newtonian fluid, and the filling thickness of non-Newtonian fluid is 2-3 times of super wear-resistant rubber wall thickness.
2. The horizontal axis tidal current energy water turbine experimental auxiliary device as claimed in claim 1, wherein: the outer side of the spherical hole part (32) is provided with a contrast scale, and the contrast scale is marked on the auxiliary limiting ring (1) and is positioned on the outer side of the initial guide groove (71).
3. The horizontal axis tidal current energy water turbine experimental auxiliary device as claimed in claim 2, wherein: the contrast scale is of a fan-shaped structure, and the central angle of the fan shape is not more than 180 degrees.
4. The horizontal axis tidal current energy water turbine experimental auxiliary device as claimed in claim 3, wherein: the distance between the initial fixed block (72) and the lowest end of the multi-stage rod is consistent with the distance between the auxiliary limiting ring (1) and the surface of the impeller.
5. The horizontal axis tidal current energy water turbine experimental auxiliary device as claimed in claim 1, wherein: the outer surface of the limiting locking section (41) is marked with an extension reference line in the vertical direction, and the end point of the extension reference line is positioned at the vertical center line of the initial fixed block (72).
6. The horizontal axis tidal current energy water turbine experimental auxiliary device as claimed in claim 1, wherein: the outer surface of the limiting locking section (41) is fixedly connected with a plurality of spiral protruding strips (5), and the spiral protruding strips (5) are spirally distributed on the surface of the limiting locking section (41).
7. The horizontal axis tidal current energy water turbine experimental auxiliary device as claimed in claim 1, wherein: the using method comprises the following steps:
s1, firstly, adjusting the position of the auxiliary limiting ring (1) to enable a plurality of special-shaped holes (3) on the auxiliary limiting ring (1) to correspond to the positioning holes;
s2, aligning an initial fixed block (72) on the multi-stage rod with the position of an initial guide groove (71) so as to insert the multi-stage rod into the positioning hole, when the initial fixed block (72) penetrates out of the lower part of the initial guide groove (71), enabling a thread section (42) to be just positioned at the opening of the positioning hole, adjusting the opposite-sex control rod (6) to be positioned above the special-shaped hole (3), and screwing the multi-stage rod through the blade (2) so as to enable the blade (2) to be installed on the impeller;
s3, judging a deflection angle by extending the position deviation of the comparison scale of the comparison line compared with the middle part according to the requirement, and adjusting the inflow angle;
s4, after the inflow angle is determined, slowly moving the opposite sex control lever (6) downwards to be clamped into the rectangular hole part (31), and simultaneously enabling the soft inner changing layer (92) to be deformed and clamped into the gaps between the spiral protruding strips (5) and the soft outer changing layer (91) to be deformed and clamped into the gaps between the arc surface strips (8);
s5, when the blade (2) rotates under the action of water flow, the multi-stage rod is stressed to cause the outer changing layer (91) and the inner changing layer (92) to be hardened and thickened, and the hardened outer changing layer (91) and the hardened inner changing layer (92) form a hidden clamping block, so that the rotation of the multi-stage rod is limited, and the blade (2) is effectively prevented from shifting under the action of the water flow.
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| CN201910633676.7A CN110344988B (en) | 2019-07-15 | 2019-07-15 | Horizontal shaft tidal current energy water turbine experiment assistor and using method thereof |
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| CN201910633676.7A CN110344988B (en) | 2019-07-15 | 2019-07-15 | Horizontal shaft tidal current energy water turbine experiment assistor and using method thereof |
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| CN2040881U (en) * | 1988-12-16 | 1989-07-12 | 宋润 | Automatic moment-changing oar |
| JP2001050148A (en) * | 1999-08-06 | 2001-02-23 | Mitsubishi Heavy Ind Ltd | Hydraulic machinery |
| RU2431759C2 (en) * | 2007-03-23 | 2011-10-20 | Флоудизайн Винд Тербин Корпорейшн | Wind-driven turbine with mixers and ejectors |
| CN104879071B (en) * | 2015-06-09 | 2017-03-08 | 周兆弟 | Rotation joint element for bar |
| CN106593748B (en) * | 2017-01-25 | 2018-10-23 | 河海大学 | A kind of horizontal axis tidal current energy hydraulic turbine experimental provision and its experimental method |
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| JPS6044512B2 (en) * | 1977-11-09 | 1985-10-03 | 株式会社日立製作所 | How to replace the runner liner |
| CN201031959Y (en) * | 2007-05-25 | 2008-03-05 | 武汉钢铁(集团)公司 | Anti-block convertor RD valve |
| FR2925939A1 (en) * | 2007-12-28 | 2009-07-03 | Alstom Power Hydraulique Sa | HYDRAULIC MACHINE, ENERGY CONVERSION INSTALLATION COMPRISING SUCH A MACHINE AND METHOD OF ADJUSTING SUCH A MACHINE |
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