Inclination rectifying device for fan tower

Abstract

The utility model discloses a fan tower inclination correcting device which comprises an executing mechanism and a driving mechanism connected with the executing mechanism. The executing mechanism comprises a cylinder body, a first piston rod and a second piston rod. The top of the first rod part and the top of the second rod part are provided with bearing tables connected with a fan tower flange. The driving mechanism comprises a valve body and a valve core; the first valve port is connected with a power source, the first channel is connected and communicated with the first driving channel, and the second channel is connected and communicated with the second driving channel; the driving mechanism further comprises a driving assembly used for driving the valve element to move to switch the first channel or the second channel so as to drive the bearing table to ascend and descend. Aiming at the diseases such as crushing of concrete around a lower flange of an insertion ring type foundation, inclination of a cavity and a tower drum, inclination of the tower drum is eliminated by jacking of a fan tower inclination correction device.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine foundation correction, in particular to a wind turbine tower tilt correction device. Background Art

[0002] A considerable proportion of wind power generation foundation structures are plug-in ring concrete foundations. When the wind turbine runs at high speed, a large overturning moment is generated. The extended foundation uses the gravity of large area and large volume concrete to resist the overturning moment. In terms of force, ordinary C30 concrete can serve under this condition, but the wind turbine tower (including the lower flange) will produce a large fatigue load, and concrete is a typical brittle material and is more sensitive to fatigue loads.

[0003] In actual production, the concrete structure is easily damaged around the tower and at the lower flange, and even the concrete around the tower will become "loose" and the lower flange will become "hollow", which will cause the wind turbine tower to tilt. This phenomenon is more common in the foundation ring wind turbine foundation. Common reinforcement methods include grouting and filling the lower cavity, chiseling out the upper concrete and then pouring, etc., so they have been widely used in wind turbine reinforcement in recent years, but the tilt of the wind turbine foundation has not been corrected, that is, the foundation after grouting repair still has the problem of tower tilt. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a wind turbine tower tilt correction device.

[0005] The technical solution adopted by the utility model to solve the technical problem is: constructing a wind turbine tower tilt correction device, including an actuator and a driving mechanism connected to the actuator;

[0006] The actuator includes a cylinder body, the cylinder body has a first movable groove and a second movable groove, the actuator also includes a first piston rod and a second piston rod, the first piston rod is movably installed in the first movable groove, and the second piston rod is movably installed in the first movable groove;

[0007] The first piston rod comprises a first rod portion, a first piston portion is provided at the bottom of the first rod portion, and the first piston portion defines a first rod cavity and a first rodless cavity in the first movable groove; the second piston rod comprises a second rod portion, a second piston portion is provided at the bottom of the second rod portion, and the second piston portion defines a second rod cavity and a second rodless cavity in the second movable groove, the first rod cavity is connected with the second rod cavity to form a first drive channel, and the first rodless cavity is connected with the second rodless cavity to form a second drive channel; a bearing platform connected to a flange of a wind turbine tower is provided at the top of the first rod portion and the top of the second rod portion;

[0008] The driving mechanism comprises a valve body, the valve body having a first valve port, a second valve port and a third valve port, the first valve port is connected with the second valve port to form a first channel, the first valve port is connected with the third valve port to form a second channel, and a valve core for switching the first channel or the second channel is also provided in the valve body; the first valve port is connected with a power source, the first channel is connected and communicated with the first driving channel, and the second channel is connected and communicated with the second driving channel;

[0009] The driving mechanism further includes a driving component, and the driving component is used to drive the valve core to move to switch the first channel or the second channel to drive the supporting platform to rise and fall.

[0010] In some embodiments, the driving assembly includes an iron core, an electromagnetic coil, an elastic reset member and a power supply seat, the iron core and the electromagnetic coil are arranged in the valve body, and the iron core is connected to the first end of the valve core, the elastic reset member is arranged in the valve body and abuts against the second end of the valve core; the power supply seat is arranged on the outer surface of the valve body and is connected to the electromagnetic coil.

[0011] In some embodiments, the cylinder body has a first connecting hole and a second connecting hole, the first connecting hole is connected and communicated with the first driving channel, and the second connecting hole is connected and communicated with the second driving channel;

[0012] The first connection hole is connected to and communicates with the first channel, and the second connection hole is connected to and communicates with the second channel.

[0013] In some embodiments, the first connection hole is provided with a first quick interface, and the second connection hole is provided with a second quick interface;

[0014] The first channel is provided with a third quick interface, and the second channel is provided with a fourth quick interface;

[0015] The wind turbine tower inclination correction device also includes a first connecting pipe and a second connecting pipe, the first connecting pipe is provided with a first quick connector and a second quick connector at both ends, the first quick connector is connected to the first quick interface, and the second quick connector is connected to the third quick interface; the second connecting pipe is provided with a third quick connector and a fourth quick connector at both ends, the third quick connector is connected to the second quick interface, and the fourth quick connector is connected to the fourth quick interface.

[0016] In some embodiments, the power source is a pneumatic source or a hydraulic source.

[0017] In some embodiments, a plurality of displacement sensors are disposed at the bottom of the support platform.

[0018] In some embodiments, a plurality of vibration sensors are disposed on the support platform and / or the cylinder body.

[0019] In some embodiments, a first connecting channel is provided in the cylinder body to connect the first rod chamber with the second rod chamber;

[0020] A second connecting channel is provided in the cylinder body to connect the first rodless cavity with the second rodless cavity.

[0021] In some embodiments, the first movable groove and the second movable groove are symmetrically arranged along the axis of the cylinder body.

[0022] In some embodiments, the cylinder body, the first piston rod, the second piston rod and the supporting platform are all made of stainless steel.

[0023] The implementation of the utility model has the following beneficial effects: in order to solve the problems such as concrete crushing, cavity and tower tilt around the flange under the insert ring foundation, the wind turbine tower tilt correction device is used to lift and eliminate the tower tilt, and then grouting is used to repair the concrete quality problems. Compared with the previous direct grouting method, this correction and reinforcement method can completely eliminate the tilt of the wind turbine tower and effectively eliminate the wind turbine foundation problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solution of the utility model, the utility model will be further described below in conjunction with the accompanying drawings and embodiments. It should be understood that the following drawings only show certain embodiments of the utility model, and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work. In the drawings:

[0025] Figure 1 It is a schematic diagram of the arrangement structure of the wind turbine tower tilt correction device in some embodiments of the utility model;

[0026] Figure 2 This is one of the application schematic diagrams of the wind turbine tower tilt correction device in some embodiments of the utility model;

[0027] Figure 3 This is the second application schematic diagram of the wind turbine tower tilt correction device in some embodiments of the utility model. DETAILED DESCRIPTION

[0028] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation methods of the present invention are now described in detail with reference to the accompanying drawings. In the following description, it should be understood that the directions or positional relationships indicated by "front", "back", "up", "down", "left", "right", "longitudinal", "horizontal", "vertical", "horizontal", "top", "bottom", "inside", "outside", "head", "tail", etc. are based on the directions or positional relationships shown in the accompanying drawings, are constructed and operated in a specific direction, and are only for the convenience of describing the present technical solution, rather than indicating that the device or element referred to must have a specific direction, and therefore cannot be understood as a limitation to the present invention.

[0029] It should also be noted that, unless otherwise clearly specified and limited, the terms such as "installed", "connected", "connected", "fixed", "set" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. When an element is referred to as being "on" or "under" another element, the element can be "directly" or "indirectly" located on the other element, or there may be one or more intermediate elements. The terms "first", "second", "third", etc. are only for the convenience of describing the present technical solution, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", "third", etc. can explicitly or implicitly include one or more of the features. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to the specific circumstances.

[0030] In the following description, specific details such as specific system structures and technologies are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details that hinder the description of the present invention.

[0031] See also Figures 1 to 3 The utility model shows a wind turbine tower tilt correction device, which includes an actuator 10 and a driving mechanism 20 connected to the actuator 10.

[0032] The actuator 10 may include a cylinder body 11 having a first movable groove 111 and a second movable groove 112 . The actuator 10 also includes a first piston rod 12 and a second piston rod 13 . The first piston rod 12 is movably installed in the first movable groove 111 , and the second piston rod 13 is movably installed in the first movable groove 111 .

[0033] The first piston rod 12 includes a first rod portion 121, and a first piston portion 122 is provided at the bottom of the first rod portion 121. The first piston portion 122 defines the first movable groove 111 into a first rod cavity 111a and a first rodless cavity 111b, and the upper part of the first rod portion 121 can extend out of the first movable groove 111; the second piston rod 13 includes a second rod portion 131, and a second piston portion 132 is provided at the bottom of the second rod portion 131. The second piston portion 132 defines the second movable groove 112 into a second rod cavity 112a and a second rodless cavity 112b, and the upper part of the second rod portion 131 can extend out of the second movable groove 112.

[0034] The first rod cavity 111a is connected with the second rod cavity 112a to form a first driving channel, and the first rodless cavity 111b is connected with the second rodless cavity 112b to form a second driving channel; the top of the first rod portion 121 and the top of the second rod portion 131 are provided with a bearing platform 14 connected to the flange 101 of the wind turbine tower 100 (which can be referred to as the wind turbine tower flange 101). Preferably, a first connecting channel is provided in the cylinder body 11 to connect the first rod cavity 111a with the second rod cavity 112a; a second connecting channel is provided in the cylinder body 11 to connect the first rodless cavity 111b with the second rodless cavity 112b.

[0035] Preferably, the first movable groove 111 and the second movable groove 112 are symmetrically arranged along the axis of the cylinder body 11 , so that the lifting and lowering of the supporting platform 14 is more stable.

[0036] Preferably, the cylinder body 11 , the first piston rod 12 , the second piston rod 13 and the supporting platform 14 are all made of stainless steel.

[0037] Further, the driving mechanism 20 may include a valve body 21, the valve body 21 has a first valve port 211, a second valve port 212 and a third valve port 213, the first valve port 211 is connected to the second valve port 212 to form a first channel A, the first valve port 211 is connected to the third valve port 213 to form a second channel B, and a valve core 22 for switching the first channel A or the second channel B is also provided in the valve body 21; the first valve port 211 is connected to a power source, the first channel A is connected and communicated with the first driving channel, and the second channel B is connected and communicated with the second driving channel.

[0038] The driving mechanism 20 further includes a driving component, which is used to drive the valve core 22 to move to switch the first channel A or the second channel B, so as to drive the supporting platform 14 to rise and fall, so as to correct the deviation of the wind turbine tower flange 101 .

[0039] Furthermore, the driving assembly may include an iron core 23, an electromagnetic coil 24, an elastic reset member 25 and a power supply seat 26, the iron core 23 and the electromagnetic coil 24 are arranged in the valve body 21, and the iron core 23 is connected to the first end of the valve core 22, the elastic reset member 25 is arranged in the valve body 21 and abuts against the second end of the valve core 22; the power supply seat 26 is arranged on the outer surface of the valve body 21 and is connected to the electromagnetic coil 24.

[0040] Among them, Figure 2 As shown, when the electromagnetic coil 24 is powered off, the iron core 23 moves to the right under the action of the elastic reset member 25, thereby driving the valve core 22 to move to the right, so that the valve core 22 cuts off the second channel B and connects the first channel A, and the first channel A is connected to the first drive channel, which can drive the first rod portion 121 and the second rod portion 131 to move downward, and can adjust the descent of the support platform 14.

[0041] like Figure 3 As shown, when the electromagnetic coil 24 is energized, the driving iron core 23 moves to the left, and then drives the valve core 22 to move to the left, so that the valve core 22 cuts off the first channel A and connects the second channel B, and the second channel B is connected to the second driving channel, which can drive the first rod part 121 and the second rod part 131 to move upward, and can adjust the rise of the supporting platform 14.

[0042] Understandably, the switching frequency of the power source medium can be adjusted by adjusting the energization interval of the electromagnetic coil 24 , thereby adjusting the subsequent movement stroke and movement frequency of the first piston rod 12 and the second piston rod 13 .

[0043] It can be understood that in order to solve the problems such as concrete crushing, cavity and tower tilt around the flange under the plug-in ring foundation, the wind turbine tower tilt correction device is used to lift and eliminate the tower tilt, and then grouting is used to repair the concrete quality problems. Compared with the previous direct grouting method, this correction and reinforcement method can completely eliminate the tilt of the wind turbine tower and effectively eliminate the wind turbine foundation problems.

[0044] In some embodiments, the driving mechanism 20 may be a two-position three-way solenoid valve. Alternatively, the driving mechanism 20 may be a two-position three-way solenoid valve or an air circuit distributor or an oil circuit distributor. The power source may be a pneumatic source or a hydraulic source. For example, the power source may be an air compressor, which provides compressed gas. Alternatively, the hydraulic source may be a hydraulic oil machine. The air compressor or the hydraulic oil machine may be connected to the first valve port 211 via a connecting pipe.

[0045] In some embodiments, the cylinder body 11 has a first connecting hole 113 and a second connecting hole 114, the first connecting hole 113 is connected and communicated with the first driving channel, and the second connecting hole 114 is connected and communicated with the second driving channel; the first connecting hole 113 is connected and communicated with the first channel A, and the second connecting hole 114 is connected and communicated with the second channel B.

[0046] Preferably, the first connection hole 113 is provided with a first quick interface, and the second connection hole 114 is provided with a second quick interface; the first channel A is provided with a third quick interface, and the second channel B is provided with a fourth quick interface; wherein, the wind turbine tower tilt correction device may further include a first connection pipe 30 and a second connection pipe 40, the first connection pipe 30 is provided with a first quick connector and a second quick connector at both ends, the first quick connector is connected to the first quick interface, and the second quick connector is connected to the third quick interface; the second connection pipe 40 is provided with a third quick connector and a fourth quick connector at both ends, the third quick connector is connected to the second quick interface, and the fourth quick connector is connected to the fourth quick interface. The first connection pipe 30 and the second connection pipe 40 may be metal bellows.

[0047] In some embodiments, a plurality of displacement sensors 50 are disposed at the bottom of the support platform 14 to detect the lifting and lowering of the wind turbine tower flange 101 or to collect displacement data of the wind turbine tower flange 101 during operation.

[0048] In some embodiments, a plurality of vibration sensors 60 are disposed on the support platform 14 and / or the cylinder body 11 to collect vibration data of the wind turbine tower flange 101 during operation.

[0049] In some embodiments, the wind turbine tower flange 101 is generally a circular ring structure. Figure 1 As shown, multiple wind turbine tower tilt correction devices can be set up, and a multi-point lifting method can be used to more comprehensively eliminate the tilt of the wind turbine tower. After eliminating the tower tilt, the reinforced concrete foundation can be grouting treated, which can effectively eliminate the concrete defects of the plug-in ring wind turbine foundation and improve the service status of the wind turbine foundation.

[0050] It can be understood that the above embodiments only express the preferred implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the patent scope of the utility model. It should be pointed out that, for ordinary technicians in this field, without departing from the concept of the utility model, the above-mentioned technical features can be freely combined, and several deformations and improvements can be made, which all belong to the protection scope of the utility model. Therefore, all equivalent changes and modifications made to the scope of the claims of the utility model should fall within the scope of the claims of the utility model.

Claims

1. A wind turbine tower tilt correction device, characterized in that: It comprises an actuator (10) and a driving mechanism (20) connected to the actuator (10); The actuator (10) comprises a cylinder body (11), wherein the cylinder body (11) has a first movable groove (111) and a second movable groove (112); the actuator (10) further comprises a first piston rod (12) and a second piston rod (13); the first piston rod (12) is movably mounted in the first movable groove (111), and the second piston rod (13) is movably mounted in the first movable groove (111); The first piston rod (12) comprises a first rod portion (121), a first piston portion (122) is provided at the bottom of the first rod portion (121), and the first piston portion (122) defines the first movable groove (111) into a first rod cavity (111a) and a first rodless cavity (111b); the second piston rod (13) comprises a second rod portion (131), a second piston portion (132) is provided at the bottom of the second rod portion (131), and the second piston portion (132) defines the first movable groove (111) into a first rod cavity (111a) and a first rodless cavity (111b); The second movable groove (112) defines a second rod cavity (112a) and a second rodless cavity (112b); the first rod cavity (111a) and the second rod cavity (112a) are connected to form a first driving channel; the first rodless cavity (111b) and the second rodless cavity (112b) are connected to form a second driving channel; the top of the first rod portion (121) and the top of the second rod portion (131) are provided with a bearing platform (14) connected to the flange of the wind turbine tower; The driving mechanism (20) comprises a valve body (21), the valve body (21) having a first valve port (211), a second valve port (212) and a third valve port (213), the first valve port (211) and the second valve port (212) being connected to form a first channel (A), the first valve port (211) and the third valve port (213) being connected to form a second channel (B), and a valve core (22) for switching the first channel (A) or the second channel (B) being further provided in the valve body (21); the first valve port (211) is connected to a power source, the first channel (A) is connected to and communicated with the first driving channel, and the second channel (B) is connected to and communicated with the second driving channel; The driving mechanism (20) further comprises a driving component, wherein the driving component is used to drive the valve core (22) to move so as to switch the first channel (A) or the second channel (B) so as to drive the supporting platform (14) to rise and fall.

2. The wind turbine tower tilt correction device according to claim 1, characterized in that: The driving assembly comprises an iron core (23), an electromagnetic coil (24), an elastic reset member (25) and a power supply seat (26); the iron core (23) and the electromagnetic coil (24) are arranged in the valve body (21), and the iron core (23) is connected to a first end of the valve core (22); the elastic reset member (25) is arranged in the valve body (21) and abuts against a second end of the valve core (22); the power supply seat (26) is arranged on the outer surface of the valve body (21) and is connected to the electromagnetic coil (24).

3. The wind turbine tower tilt correction device according to claim 2 is characterized in that: The cylinder body (11) has a first connecting hole (113) and a second connecting hole (114), the first connecting hole (113) is connected to and communicates with the first driving channel, and the second connecting hole (114) is connected to and communicates with the second driving channel; The first connection hole (113) is connected to and communicates with the first channel (A), and the second connection hole (114) is connected to and communicates with the second channel (B).

4. The wind turbine tower tilt correction device according to claim 3 is characterized in that: The first connection hole (113) is provided with a first quick interface, and the second connection hole (114) is provided with a second quick interface; The first channel (A) is provided with a third quick interface, and the second channel (B) is provided with a fourth quick interface; The wind turbine tower tilt correction device also includes a first connecting pipe (30) and a second connecting pipe (40), wherein the first connecting pipe (30) is provided with a first quick connector and a second quick connector at both ends, the first quick connector is connected to the first quick interface, and the second quick connector is connected to the third quick interface; the second connecting pipe (40) is provided with a third quick connector and a fourth quick connector at both ends, the third quick connector is connected to the second quick interface, and the fourth quick connector is connected to the fourth quick interface.

5. The wind turbine tower tilt correction device according to claim 2, characterized in that: The power source is a pneumatic source or a hydraulic source.

6. The wind turbine tower tilt correction device according to claim 1, characterized in that: A plurality of displacement sensors (50) are provided at the bottom of the supporting platform (14).

7. The wind turbine tower tilt correction device according to claim 1, characterized in that: A plurality of vibration sensors (60) are provided on the supporting platform (14) and / or the cylinder body (11).

8. The wind turbine tower tilt correction device according to claim 1, characterized in that: A first connecting channel is provided in the cylinder body (11) to connect the first rod chamber (111a) and the second rod chamber (112a); A second connecting channel is provided in the cylinder body (11) to connect the first rodless chamber (111b) and the second rodless chamber (112b).

9. The wind turbine tower tilt correction device according to claim 1, characterized in that: The first movable groove (111) and the second movable groove (112) are symmetrically arranged along the axis of the cylinder body (11).

10. The wind turbine tower tilt correction device according to claim 1, characterized in that: The cylinder body (11), the first piston rod (12), the second piston rod (13) and the supporting platform (14) are all made of stainless steel.

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