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CN-122014496-A - Breeze type multi surface of vortex bladeless wind power generation device

CN122014496ACN 122014496 ACN122014496 ACN 122014496ACN-122014496-A

Abstract

The invention provides a breeze type multi-surface of vortex bladeless wind power generation device, which relates to the technical field of new energy wind power generation and comprises a single-layer hollow carbon fiber upright post, a vortex-induced vibration generating mechanism, a vibration transmission mechanism, a power conversion and power generation executing mechanism, wherein the single-layer hollow carbon fiber upright post is made of a carbon fiber composite material, the vortex-induced vibration generating mechanism is a spiral louver multi-surface of vortex wing strip fixed on the outer wall of the single-layer hollow carbon fiber upright post, and the breeze type multi-blade wind power generation device is based on the special pneumatic structural design of the spiral louver multi-wing strip surface of vortex and matched with specific size and streamline section parameters, can accurately induce stable alternating karman vortex street, realizes a multi-stage vortex street superposition effect, greatly reduces excitation thresholds, achieves 2.0m/s ultra-low wind speed starting, thoroughly gets rid of the dependence of a traditional fan on high wind speed, and comprehensively widens the application range of low wind speed wind conditions.

Inventors

  • ZHANG HAO
  • YAO BO
  • ZHENG JIACHUN

Assignees

  • 山东蓝昆氢能源科技有限公司

Dates

Publication Date
20260512
Application Date
20260330

Claims (9)

  1. 1. A breeze type multi surface of vortex bladeless wind power generation device comprises a single-layer hollow carbon fiber stand column (1), a vortex-induced vibration generation mechanism (2), a vibration transmission mechanism (3) and a power conversion and generation execution mechanism (4), and is characterized in that the single-layer hollow carbon fiber stand column (1) is made of a carbon fiber composite material, a static peripheral rigid vertical frame (11) is arranged in an inner cavity of the single-layer hollow carbon fiber stand column (1) in a penetrating manner along the axial direction of the single-layer hollow carbon fiber stand column, the bottom end of the static peripheral rigid vertical frame (11) is rigidly connected with a mounting base (12), the lower end of the single-layer hollow carbon fiber stand column (1) is rigidly connected with a cover cylinder (13), a circumferential elastic support assembly (15) is arranged between the cover cylinder (13) and the mounting base (12), a central flexible suspension rope (113) is arranged in the penetrating manner along the central axis of the single-layer hollow carbon fiber stand column (1), and a tuning mass damping system (14) is arranged on the static peripheral rigid vertical frame (11); the vortex-induced vibration generating mechanism (2) is a spiral shutter multi surface of vortex wing strip fixed on the outer wall of the single-layer hollow carbon fiber upright post (1); The vibration transmission mechanism (3) comprises two groups of annular reinforcing frames (31) which are axially arranged at intervals along the single-layer hollow carbon fiber upright post (1), the outer ring of the annular reinforcing frames (31) is rigidly fixed with the inner wall of the single-layer hollow carbon fiber upright post (1), and transverse vibration synchronous with the falling frequency of the karman vortex street can be generated along with the micro deformation of the single-layer hollow carbon fiber upright post (1); The power conversion and generation actuating mechanism (4) is connected with the central flexible suspension rope (113) and can sequentially convert transverse vibration of the annular reinforcing frame (31) into axial reciprocating linear motion and finally into electric energy.
  2. 2. The breeze type multi-surface of vortex bladeless wind power generation device according to claim 1, wherein an upper triangular support connecting plate (111) and a lower triangular support connecting plate (112) and a circumferential distributed spiral spring assembly (112) are arranged on the static peripheral rigid vertical frame (11), three top angles of the upper triangular support connecting plate (111) and the lower triangular support connecting plate are rigidly fixed with the static peripheral rigid vertical frame (11), the circumferential distributed spiral spring assembly (112) is uniformly arranged along the circumferential direction of the static peripheral rigid vertical frame (11), one end of each group of spiral springs is rigidly fixed with the plate surfaces of the upper triangular support connecting plate (111) and the lower triangular support connecting plate (111), and the other end of each group of spiral springs is in contact with a tuning mass damping system (14) at a corresponding position.
  3. 3. The breeze type multi surface of vortex bladeless wind power generation device according to claim 2, wherein the tuning mass damping system (14) can do synchronous reciprocating vibration along the axial direction of the single-layer hollow carbon fiber upright post (1) along with the deformation of the circumferential distributed spiral spring component (112), an annular elastic ring (141) is arranged on the periphery of the tuning mass damping system (14), and the vibration transmission mechanism (3) can be contacted with the annular elastic ring (141) when the single-layer hollow carbon fiber upright post (1) transversely shakes.
  4. 4. The breeze type multi-surface of vortex bladeless wind power generation device according to claim 3 is characterized in that the bottom of the vibration transmission mechanism (3) is fixedly connected with a central flexible suspension rope (113), the vibration transmission mechanism (3) further comprises an upper conical supporting frame (32) and a lower conical supporting frame (32), the upper conical supporting frame (32) and the lower conical supporting frame (32) are of symmetrical conical truss structures, the large-diameter end of the upper conical supporting frame (32) and the small-diameter end of the lower conical supporting frame are rigidly connected with an annular reinforcing frame (31) at the corresponding position, a central guide shaft (33) is fixedly arranged at the small-diameter end of the upper conical supporting frame, an annular disc (331) is fixedly arranged on the central guide shaft (33), guide through holes are formed in the annular disc (331) in a circumferential array, and elastic damping elements (332) are arranged in the guide through holes in a penetrating mode.
  5. 5. The breeze type multi-surface of vortex bladeless wind power generation device is characterized in that 12 spiral blades of the spiral tripe type multi-surface of vortex are uniformly distributed along the circumferential direction of a single-layer hollow carbon fiber upright post (1), the wind power generation device is of a full-course continuous breakpoint-free spiral structure, the wing height of the spiral tripe type multi-surface of vortex blade is 0.18m, the helix angle is 22.5, the pitch is 4.5m, the spiral tripe type multi-surface of vortex blade adopts a front round and rear tip streamline section which is vertically symmetrical, the front edge of the section facing the air is a circular arc with the radius of 12mm, the maximum thickness is 36mm and is located at 30% chord length from the front edge, and the back air rear edge is a symmetrical sharp wedge-shaped tail with the 15 included angles.
  6. 6. The breeze type multi surface of vortex bladeless wind power generation device according to claim 1, wherein the power conversion and power generation executing mechanism (4) comprises a movable seat (41) and a permanent magnet linear generator (42), the movable seat (41) moves up and down on the static peripheral rigid vertical frame (11), a round rod is fixed at the lower end of the movable seat (41), the permanent magnet linear generator (42) is installed on the static peripheral rigid vertical frame (11), and the round rod at the lower end of the movable seat (41) is connected with a central straight shaft of the permanent magnet linear generator (42) through a coupler.
  7. 7. A breeze type multi surface of vortex bladeless wind power generation apparatus as defined in claim 6, wherein the permanent magnet linear generator (42) is 500 kW-level, and can directly convert the linear reciprocating motion of the movable base (41) into electric energy.
  8. 8. The breeze type multi surface of vortex bladeless wind power generation device according to claim 5, wherein the single-layer hollow carbon fiber upright post (1) has an outer diameter of 2.8m, a wall thickness of 30mm and an axial height of 38m, and is integrally formed by adopting a high-strength carbon fiber composite material.
  9. 9. A breeze type multi surface of vortex bladeless wind power generation apparatus as defined in claim 1, wherein the mounting base (12) is provided with a three-point anchor assembly.

Description

Breeze type multi surface of vortex bladeless wind power generation device Technical Field The invention relates to the technical field of new energy wind power generation, in particular to a breeze type multi surface of vortex bladeless wind power generation device. Background Along with the transformation of the global energy structure to clean low carbon, wind power generation is used as a renewable energy form with mature technology and wide resource distribution, the importance in a global energy supply system is continuously improved, a perfect industrialization system is formed by the mainstream horizontal axis wind power generation technology, the large-scale application is realized in the scenes of a centralized wind power plant, offshore wind power and the like, meanwhile, the vortex-induced vibration type bladeless wind power generation technology based on the karman vortex street principle is used as an important research and development direction of the technical innovation of the wind power field, mature vibration control technologies such as a tuning quality damping system and the like are widely applied in multiple fields, and the industry is continuously developed around the directions of the pneumatic performance of a blunt body, the capture of vibration energy, the conversion of mechanical energy and electric energy and the like, the corresponding theoretical basis and technology accumulation are also laid for the optimization and the landing of the wind power utilization technology which is suitable for the breeze environment. The traditional wind power generation device has the common problems that the starting wind speed is high, the low wind speed wind resource utilization rate is low, and the high-power stable power generation is difficult to realize in a breeze environment. Disclosure of Invention The invention relates to a breeze type multi surface of vortex bladeless wind power generation device, which aims to solve the technical problems in the background technology. The invention provides a breeze type multi-surface of vortex bladeless wind power generation device, which specifically comprises a single-layer hollow carbon fiber upright post, a vortex-induced vibration generation mechanism, a vibration transmission mechanism, a power conversion and power generation execution mechanism, wherein the single-layer hollow carbon fiber upright post is made of a carbon fiber composite material, a static peripheral rigid vertical frame is arranged in an inner cavity of the single-layer hollow carbon fiber upright post in a penetrating manner along the axial direction of the single-layer hollow carbon fiber upright post, the bottom end of the static peripheral rigid vertical frame is rigidly connected with a mounting base, the lower end of the single-layer hollow carbon fiber upright post is rigidly connected with a cover cylinder, a circumferential elastic support assembly is arranged between the cover cylinder and the mounting base, a central flexible suspension rope is arranged on the static peripheral rigid vertical frame in a penetrating manner along the central axis of the single-layer hollow carbon fiber upright post, a tuning mass damping system is arranged on the static peripheral rigid vertical frame, and the natural frequency of the tuning mass damping system is precisely matched with the falling frequency of a karman street under the rated wind speed, so as to stabilize the vibration frequency and amplify the vibration stroke; The vortex-induced vibration generating mechanism is a spiral shutter multi surface of vortex wing strip fixed on the outer wall of the single-layer hollow carbon fiber upright post and is used for actively inducing airflow flowing through the single-layer hollow carbon fiber upright post to form a stable alternately-falling karman vortex street and strengthening periodic transverse exciting forces on two sides of the single-layer hollow carbon fiber upright post; the vibration transmission mechanism comprises two groups of annular reinforcing frames which are axially arranged at intervals along the single-layer hollow carbon fiber upright post, the outer ring of the annular reinforcing frames is rigidly fixed with the inner wall of the single-layer hollow carbon fiber upright post, and transverse vibration synchronous with the falling frequency of the karman vortex street can be generated along with the micro-amplitude deformation of the single-layer hollow carbon fiber upright post; the power conversion and generation actuating mechanism is connected with the central flexible suspension rope, and can sequentially convert transverse vibration of the annular reinforcing frame into axial reciprocating linear motion and finally into electric energy. Further, an upper triangular support connecting plate, a lower triangular support connecting plate and a circumferential distributed spiral spring assembly are arranged on the static peripheral rigid vertical f