CN-121977425-A - Detection device and detection method for die joint of wind power blade

CN121977425ACN 121977425 ACN121977425 ACN 121977425ACN-121977425-A

Abstract

The invention belongs to the technical field of wind power blade manufacturing, and particularly relates to a device and a method for detecting a die joint of a wind power blade. The wind power blade die joint seam detection device comprises a power supply, a signal processing mechanism connected with a power supply circuit and at least one detection sensing mechanism connected with the signal processing mechanism circuit, wherein the detection sensing mechanism comprises a flexible contact plate, a rigid contact plate, an elastic support piece, a plurality of elastic conductive contacts and electric contact points which are arranged in parallel up and down, when the detection sensing module is extruded by a die joint seam, an independent electric signal detection channel is formed, the signal processing mechanism is used for scanning the on-off state of each electric signal detection channel, and the thickness of the die joint seam is determined according to the height value of the lowest flexible conductive contact. According to the invention, a plurality of elastic conductive contacts with different heights are contacted with the electric contact points arranged on the flexible contact plate to form a plurality of independent electric signal detection channels, so that the detection process is automatic, high in real-time performance and good in repeatability and reliability.

Inventors

SHI XIAOHUA
PAN ZHUANG
GUO PENG
CHENG WEIHUA
SUN GUOBIN
Zhuo Mingyu
Lv Yanze
Xie Yaran
Pang Minghao

Assignees

锐依德(上海)机器人科技有限公司

Dates

Publication Date: 20260505
Application Date: 20260204

Claims (10)

1. The wind power blade die joint detection device is characterized by comprising a power supply (1), a signal processing mechanism (2) in circuit connection with the power supply (1) and at least one detection sensing mechanism (3) in circuit connection with the signal processing mechanism (2); the detection sensing mechanism (3) comprises: A flexible contact plate (31) and a rigid contact plate (32) which are arranged in parallel up and down; an elastic support (33) disposed between the flexible contact plate (31) and the rigid contact plate (32) for connecting the flexible contact plate (31) and the rigid contact plate (32); A plurality of elastic conductive contacts (34) with different heights are arranged on the rigid contact plate (32) and positioned between the flexible contact plate (31) and the rigid contact plate (32) towards the direction of the flexible contact plate (31); When the detection sensing module is extruded by the die clamping seam, the flexible support body is compressed and deformed, so that the elastic conductive contact (34) with the height larger than the current die clamping seam thickness is conducted with the corresponding electric contact (35) to form an independent electric signal detection channel, and the signal processing mechanism (2) is used for scanning the on-off state of each electric signal detection channel and determining the thickness of the die clamping seam according to the height value of the lowest flexible conductive contact.
2. The device for detecting the joint of the wind power blade according to claim 1, wherein the elastic supporting piece (33) comprises a flexible supporting plate (331) arranged at two ends of the flexible contact plate (31) and the rigid contact plate (32), and a flexible supporting block (332) arranged at the middle position of the flexible contact plate (31) and the rigid contact plate (32); The flexible supporting body and the flexible supporting block (332) are made of porous elastic materials with rebound resilience, and the compression deformation range of the flexible supporting body and the flexible supporting block (332) covers the height change intervals of all the elastic conductive contacts (34).
3. The wind power blade die joint detection device according to claim 1, wherein the elastic conductive contacts (34) are fixedly arranged on the rigid contact plate (32) through conductive adhesives, the heights of the elastic conductive contacts (34) are symmetrically arranged along the central line of the rigid contact plate (32), and the heights of the elastic conductive contacts (34) are sequentially reduced from outside to inside.
4. The wind power blade die joint detection device according to claim 1, wherein the flexible contact plate (31) is in circuit connection with the signal processing mechanism (2) through an input soft flat cable (36) and is used for receiving detection excitation signals, and the rigid contact plate (32) is in circuit connection with the signal processing mechanism (2) through an output soft flat cable (37) and is used for outputting channel signals of all elastic conductive contacts (34); The wires in the output flexible flat cable (37) are mutually independent and insulated and are in one-to-one corresponding circuit connection with the elastic conductive contacts (34).
5. The wind power blade joint seam detection device according to claim 1, wherein the signal processing mechanism (2) comprises: The data processing unit (21) is used for receiving and processing the multichannel conduction signals of the detection sensing mechanism (3) and performing data processing; the dial switch (22) is in signal connection with the data processing unit (21) and is used for setting working parameters and identification numbers so as to distinguish different detection positions; The result display unit (23) is in signal connection with the data processing unit (21) and is used for displaying the detected thickness of the die clamping seam or the channel state in real time; The communication control module (24) is used for carrying out communication protocol conversion and signal matching processing on the detection data output by the data processing module; the wireless data transmission module (25) is electrically connected with the communication control module through the DuPont wire, and the data processed by the communication control module, the combination identification number and the time stamp are transmitted to the upper computer or the data storage terminal by the wireless data transmission module (25) so as to carry out wireless transmission and remote recording of the detection data.
6. A wind blade joint seam detection device according to claim 5, characterized in that the data processing unit (21) comprises: The microcontroller is configured to circularly scan the electrical connection state of each detection channel; the channel selection circuit is connected with the microcontroller and used for sequentially gating each detection channel; And the signal filtering and amplifying circuit is used for filtering and amplifying the channel signal.
7. The device for detecting the die joint of the wind power blade according to claim 5, wherein the signal processing mechanism (2) further comprises a power switch (26) which is communicated with the power supply (1) and used for controlling the on-off of the signal processing mechanism (2).
8. The wind power blade die joint detection device according to claim 5, wherein the height value of the elastic conductive contact (34) is set according to a die joint process tolerance range, and the device specifically comprises five gradients of 50mm, 40mm, 30mm, 20mm and 10mm, and when the elastic conductive contact is fixedly arranged on the rigid contact plate (32), the gradient difference value of the adjacent elastic conductive contact (34) is 10mm and corresponds to different levels of die joint thickness judgment thresholds.
9. A method for detecting a mold closing gap of a wind power blade, which adopts the mold closing gap detection device for the wind power blade according to any one of claims 5 to 8, and is characterized by comprising the following steps: S1, arranging a detection sensing mechanism (3) in a to-be-detected die joint area between an upper die and a lower die of a wind power blade, and attaching a rigid contact plate (32) to the surface of the lower die of the wind power blade, wherein the signal processing mechanism (2) is arranged far away from the die joint area of the wind power blade; s2, controlling upper and lower moulds of the wind power blade to be closed, and enabling a clamping force to act on the detection sensing mechanism (3) so as to compress the elastic supporting piece (33); S3, when the thickness of the die clamping seam is smaller than or equal to the height of a certain elastic conductive contact (34), the elastic conductive contact (34) is in contact conduction with a corresponding electric contact point (35); S4, after the upper die and the lower die of the wind power blade are completely closed, the signal processing mechanism (2) sequentially conducts electric conduction detection on contact points connected with the elastic conductive contacts (34); s5, sequentially scanning all the electric conduction channels by the signal processing mechanism (2), and identifying the lowest elastic conductive contact (34) in a conduction state; S6, judging whether the current mold clamping seam thickness is within an allowable range according to the preset height value of the lowest elastic conductive contact (34), and outputting a detection result.
10. The wind power blade mold clamping seam detection method according to claim 9 is characterized by further comprising a step S7 after the step S6, wherein the step S7 is specifically characterized in that a detection sensing mechanism (3) is placed in a standard calibration module with known thickness for pressurization detection, deviation data of actual conducting heights and preset height values of all elastic conductive contacts (34) are obtained, a height compensation coefficient is established, and in the subsequent actual mold clamping seam detection, the detection result is compensated in real time according to the height compensation coefficient so as to correct measurement errors caused by long-term deformation or temperature change of the elastic support (33) and the elastic conductive contacts (34).

Description

Detection device and detection method for die joint of wind power blade Technical Field The invention belongs to the technical field of wind power blade manufacturing, and particularly relates to a device and a method for detecting a die joint of a wind power blade. Background The wind power blade is used as a core component of the wind generating set, and the manufacturing quality of the wind power blade is directly related to the performance and reliability of the whole wind power generation system. In the manufacturing process of wind power blades, an upper half shell and a lower half shell are respectively molded by a split type die, and then are bonded and solidified by a die assembly process to form an integral blade, in the process, the uniformity and consistency of the thickness of a glue layer in a die assembly joint area are key process indexes influencing the structural strength, fatigue performance and air tightness of the blade, and the accurate control of the glue layer is critical to guaranteeing the long-term stable operation of the blade. The traditional wind power blade mold closing seam detection method mainly relies on manual measurement and experience judgment, namely discrete point sampling measurement is carried out by an operator by using tools such as calipers, plugs and the like, and the state of a glue layer is judged according to experience, and the method has the following obvious defects: 1) The measurement accuracy and repeatability are greatly subjectively influenced by personnel skills, and standardization is difficult to realize; 2) The detection coverage rate is low, the efficiency is insufficient, the full-length real-time monitoring of the continuous die-closing seam cannot be realized, and local thickness abnormality or glue line defect can be easily missed; 3) The detection result lacks the capability of digital recording and statistical analysis, which is unfavorable for process tracing and quality optimization. Although some automatic detection equipment such as laser triangulation ranging, ultrasonic thickness detection and the like appear on the market at present, in principle, higher-precision measurement can be realized, in an actual wind power blade production scene, the problems of insufficient adaptability, difficult integration, high cost and incapability of carrying out multipoint synchronous detection are faced due to factors such as huge blade size, complex profile curvature, field environment interference, adhesive layer material characteristics and the like. Disclosure of Invention The invention aims to overcome the defects of low detection precision, insufficient efficiency, difficulty in realizing continuous online measurement and incapability of realizing multipoint synchronous detection in the prior art, and provides a wind power blade die joint seam detection device and a detection method which are suitable for complex profiles of wind power blades, support multipoint arrangement, can realize online monitoring of a die closing process and have good economy and reusability. The technical scheme adopted for solving the technical problems is as follows: As a first aspect, the invention provides a wind power blade die joint detection device, which comprises a power supply, a signal processing mechanism connected with a power supply circuit and at least one detection sensing mechanism connected with the signal processing mechanism circuit; The detection sensing mechanism comprises: a flexible contact plate and a rigid contact plate which are arranged in parallel up and down; An elastic support member disposed between the flexible contact plate and the rigid contact plate for connecting the flexible contact plate and the rigid contact plate; The elastic conductive contacts with different heights are arranged on the rigid contact plate and positioned between the flexible contact plate and the rigid contact plate towards the direction of the flexible contact plate; When the detection sensing module is extruded by the die clamping seam, the flexible support body is compressed and deformed, so that the elastic conductive contact with the height larger than the current thickness of the die clamping seam is conducted with the corresponding electric contact to form an independent electric signal detection channel, and the signal processing mechanism is used for scanning the on-off state of each electric signal detection channel and determining the thickness of the die clamping seam according to the height value of the lowest flexible conductive contact. Specifically, the elastic support piece comprises flexible support plates arranged at two ends of the flexible contact plate and the rigid contact plate, and a flexible support block arranged at the middle position of the flexible contact plate and the rigid contact plate; the flexible supporting body and the flexible supporting block are made of porous elastic materials with rebound resilience, and the compressi