CN210343605U

CN210343605U - Fault alarm device for pitch system of wind turbine generator

Info

Publication number: CN210343605U
Application number: CN201920779417.0U
Authority: CN
Inventors: 黄力伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-05-27
Filing date: 2019-05-27
Publication date: 2020-04-17
Anticipated expiration: 2029-05-27

Abstract

The embodiment of the utility model discloses a fault alarm device for a variable pitch system of a wind turbine generator, which comprises a variable pitch cylinder, a gear box connected with the variable pitch cylinder, a detection assembly for detecting the rotation of the variable pitch rod and a control system for alarming when the variable pitch rod rotates and controlling the stop of the variable pitch system, wherein the detection assembly comprises a magnetic stripe fixed on the variable pitch rod and a magnetic proximity switch for sensing the approach of the magnetic stripe, the magnetic stripe is embedded in the length direction of the variable pitch rod, the magnetic proximity switch is fixedly arranged on the inner wall of the gear box, the position of the magnetic proximity switch is positioned on the inner wall of the gear box and far away from the magnetic stripe, so that whether the variable pitch rod fails or not can be automatically detected without affecting the movement of the variable pitch rod, personnel do not need to continuously detect, and stop the operation of the wind turbine generator when the variable pitch rod fails, preventing the occurrence of a failure.

Description

Fault alarm device for pitch system of wind turbine generator

Technical Field

The embodiment of the utility model provides a become oar system fault alarm technical field of wind turbine generator system, concretely relates to become oar system fault alarm device of wind turbine generator system.

Background

The development of wind energy as a pollution-free renewable energy source has huge economic, social and environmental protection values and development prospects, and the utilization of the wind energy is highly valued by countries in the world. In the early days, wind turbines mainly adopt fixed-pitch turbines, and the wind turbines are gradually replaced by variable-pitch wind turbines because the rotational speed of the wind turbines cannot change along with the wind speed, so that the wind energy utilization rate is low, the wind speed has the defects of great load fluctuation impact on supporting parts when suddenly changing, great current impact possibly caused when being connected to a grid and the like. The variable-pitch wind turbine generator system enables output power to be stable, reduces torque oscillation and engine room oscillation by controlling the pitch angle, optimizes the output power, effectively reduces noise, stabilizes the output power of the generator, improves the stress condition of blades and the whole machine, and has better wind energy capture characteristic than a fixed-pitch wind turbine generator.

The pitch control technology is a control technology and a power system, and the pitch angle of blades on a rotor system is changed according to wind speed and the rotating speed of a generator so as to achieve the purpose of controlling the output power of the generator. With the continuous maturity and development of wind power technology, the pitch control technology of the currently adopted wind wheel can ensure the operation stability of the wind turbine generator, reduce the weight of the wind turbine generator, improve the wind energy conversion coefficient and improve the power curve, so that the wind turbine generator can always keep the best wind energy capturing effect under different wind speeds, and the system performance is improved. The large-capacity wind turbine units mostly adopt the pitch regulation of 1-6. The variable pitch technology plays a very critical role in the running state of the unit and has important significance in stable and economic running of the unit. In wind power generation, the G5X and V52 units are relatively common units, and similarly, the G5X and V52 units also perform pitch control operation by using a pitch control system, in the pitch control system, a pitch control rod is only used for reciprocating back and forth without rotating, when the pitch control rod rotates, the pitch control rod is broken or separated, namely, a fault occurs, once the pitch control rod fails, a pitch control step may not be completed, even the unit stops working directly, and usually, the state of the pitch control rod is manually observed through an observation port, but the manual observation cannot perform the function of monitoring at any time, so that accidents caused by the fact that the fault of the pitch control rod cannot be found timely are likely to occur.

SUMMERY OF THE UTILITY MODEL

Therefore, the embodiment of the utility model provides a become oar system fault alarm device of wind turbine generator system to solve among the prior art because become the oar pole and break down and the problem that can not in time overhaul that leads to.

In order to achieve the above object, the embodiment of the present invention provides the following technical solutions: the utility model provides a become oar system fault alarm device of wind turbine generator system, includes and becomes the oar jar, with the gear box that becomes the oar jar and be used for detecting the detection subassembly that becomes oar pole pivoted and be used for when becoming the oar pole and rotate the control system who reports to the police and control the oar system stop work, detection subassembly is including fixing the magnetic stripe on becoming the oar pole and being used for responding to the magnetic stripe and opening when being close, the magnetic stripe inlays to establish in the length direction of becoming the oar pole, magnetic proximity switch is fixed to be set up on the inner wall of gear box, magnetic proximity switch's position is located the position that the magnetic stripe was kept away from to the gear box inner wall.

Further, the magnetic strip is a permanent magnet.

Further, the control system comprises a relay connected with the magnetic proximity switch, and the magnetic proximity switch is connected between a coil of the relay and the power supply in series.

Further, the control system also comprises a loudspeaker and an alarm lamp for audible and visual alarm, and a normally open switch of the relay is connected in series with a node of the power supply, which is coupled with the loudspeaker and the alarm lamp.

Further, a normally closed switch of the relay is connected in series with a power supply circuit of the pitch system.

The embodiment of the utility model provides a have following advantage: whether the variable pitch rod breaks down or not can be automatically detected under the condition that the movement of the variable pitch rod is not influenced, personnel do not need to continuously detect, and meanwhile when the fault of the variable pitch rod is found, the unit stops working while alarming, so that the fault is prevented.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.

Fig. 1 is a schematic view of an overall structure of a fault alarm device of a pitch system of a wind turbine generator system provided in an embodiment of the present invention;

fig. 2 is a connection relation diagram of a relay and a magnetic switch of a fault alarm device of a pitch system of a wind turbine generator system provided by the embodiment of the present invention;

fig. 3 is a sound-light alarm control diagram of a fault alarm device of a pitch system of a wind turbine generator system provided by an embodiment of the present invention;

fig. 4 is the embodiment of the utility model provides a control of becoming oar system fault alarm device of wind turbine generator system becomes oar system power supply circuit schematic diagram.

In the figure: 1. a pitch cylinder; 11. a variable paddle lever; 2. a gear case; 21. a viewing port; 3. a magnetic strip; 4. a magnetic proximity switch; 5. a relay; 51. a normally open switch; 52. a normally closed switch; 6. a speaker; 7. an alarm lamp.

Detailed Description

The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Example (b): the utility model provides a become oar system fault alarm device of wind turbine generator system, as shown in figure 1, including becoming oar cylinder 1, the gear box 2 of being connected with becoming oar cylinder 1, a detection component for detecting become oar pole 11 and be used for reporting to the police and control the control system that becomes oar system stop work when becoming oar pole 11 and rotating, be provided with in foretell change oar cylinder 1 and become oar pole 11, become oar pole 11 and do the reciprocating motion towards gear box 2 in becoming oar cylinder 1, in order to accomplish the change oar action, detection component is including fixing the magnetic stripe 3 on becoming oar pole 11 and being used for responding to the magnetic proximity switch 4 that opens when magnetic stripe 3 is close, it is equipped with a magnetic stripe 3 to inlay in the length direction of becoming oar pole 11, this magnetic stripe 3 is permanent magnet, in order to guarantee to detect stably. A magnetic proximity switch 4 is arranged on the inner wall of the gear box 2, and the position of the magnetic proximity switch 4 is positioned on the position, far away from the magnetic strip 3, of the inner wall of the gear box 2. An observation port 21 is arranged on the gear box 2, in the embodiment, the magnetic strip 3 is arranged on the side of the pitch changing rod 11 departing from the observation port 21, and the magnetic proximity switch 4 is arranged at the position of the inner wall of the gear box 2 departing from the magnetic strip 3 and is positioned around the observation port 21. The connection lines of the magnetic proximity switch 4 are connected to the outside of the gearbox 2 via a view port 21, cooperating with circuit elements in the control system. The magnetic proximity switch 4 described above is preferably a magnetic proximity switch 4 of type TCK-1P in this embodiment.

Referring to fig. 2 to 4, the control system includes a relay 5 connected to the magnetic proximity switch 4, and the magnetic proximity switch 4 is connected in series between a coil of the relay 5 and the power supply source, that is, when the magnetic proximity switch 4 is closed, the coil of the relay 5 is energized. The control system also comprises a loudspeaker 6 for making an audible alarm and a warning lamp 7 for making a light warning, the loudspeaker 6 is connected with the warning lamp 7 in parallel, and one of the normally open switches 51 of the relay 5 is connected with a node of the power supply, which is coupled with the loudspeaker 6 and the warning lamp 7 in series. One of the normally closed switches 52 of the relay 5 is connected in series to the power supply circuit of the pitch system.

The working process is as follows: rotate when becoming oar pole 11 and breaking off, rotate when rotating back magnetic stripe 3 and be close magnetic proximity switch 4 gradually, magnetic proximity switch 4 is closed, and relay 5 circular telegram this moment, relay 5's normally open switch 51 is closed, and normally closed switch 52 breaks off, and speaker 6 and alarm lamp 7 circular telegram simultaneously send audible and visual alarm to indicate, and the power supply circuit outage of the oar system of changing simultaneously stops the power supply.

Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.

Claims

1. The utility model provides a become oar system fault alarm device of wind turbine generator system which characterized by: the device comprises a variable pitch cylinder (1), a gear box (2) connected with the variable pitch cylinder (1), a detection assembly used for detecting the rotation of a variable pitch rod (11) and a control system used for alarming when the variable pitch rod (11) rotates and controlling the stop work of a variable pitch system, wherein the detection assembly comprises a magnetic strip (3) fixed on the variable pitch rod (11) and a magnetic proximity switch (4) used for sensing the approach of the magnetic strip (3) and opening, the magnetic strip (3) is embedded in the length direction of the variable pitch rod (11), the magnetic proximity switch (4) is fixedly arranged on the inner wall of the gear box (2), and the position of the magnetic proximity switch (4) is located at the position, far away from the magnetic strip (3), of the inner wall of the gear box (2).

2. The fault alarm device for the variable pitch system of the wind turbine generator set according to claim 1, wherein: the magnetic strip (3) is a permanent magnet.

3. The fault alarm device for the variable pitch system of the wind turbine generator set according to claim 1, wherein: the control system comprises a relay (5) connected with a magnetic proximity switch (4), and the magnetic proximity switch (4) is connected between a coil of the relay (5) and a power supply in series.

4. The fault alarm device for the variable pitch system of the wind turbine generator set according to claim 3, wherein: the control system also comprises a loudspeaker (6) and a warning lamp (7) which are used for sound-light alarm, and a normally open switch (51) of the relay (5) is connected in series with a node of a power supply, which is coupled with the loudspeaker (6) and the warning lamp (7).

5. The fault alarm device for the variable pitch system of the wind turbine generator set according to claim 3, wherein: and a normally closed switch (52) of the relay (5) is connected in series with a power supply circuit of the pitch system.