This part specifies the test methods for the braking system of off-grid wind turbines. This standard applies to the braking system of off-grid wind turbines with a rotor swept area of ​​less than 40 square meters. JB/T 10401.2-2004 Off-grid wind turbine braking system Part 2: Test methods JB/T10401.2-2004 Standard download decompression password: www.bzxz.net

ICS 27.180
Machinery Industry Standard of the People's Republic of China
JB/T10401.2—2004
Braking system of off-grid wind turbine generator systemPart2:Test method
Issued on 2004-02-10
Implemented on 2004-06-01
Issued by the National Development and Reform Commission of the People's Republic of China Foreword
2 Normative references
3 Terms and definitions
4 Test contents
5 Test requirements,
G Structural inspection.
7 Performance test:
Braking force
Thruster push test
Dynamic friction of brake pad
Brake spring
Precision inspection,
Surface quality inspection
JR/T10401.2—2004
JWT 10401.2. --2004
JB/T1040! The braking system of two types of wind turbine generator sets is divided into two parts: Part 1: Technical conditions: Part 2: Test methods. This part is the second part of 1R/T10401. This part is the last one to be formulated. This part is based on the requirements of 1R/T10401-2000 standardization work guideline Part 1: Structure and abbreviation of the standard. This part was proposed by the China Machinery Industry Federation and drafted by the National Wind Turbine Standardization Technical Committee. The drafting unit of this part is the Pastoral Water Conservancy Science and Technology Research Institute of the Ministry of Water Resources. This part is mainly drafted by: Liu Huijing, Nan Guoxin, Wu Yongzhong. 1 Scope Off-grid wind turbine brake system Part 2: Test methods This part specifies the test methods for the brake system of two types of wind turbines. This part is applicable to the brake system of off-grid wind turbines with a rotor sweep of less than 40m. 2 Normative references The clauses in the following documents become the clauses of this part through reference in this part of JB/T 10401: For the referenced documents, the subsequent amendments (excluding errors) or revisions are not applicable to this part, however. The relevant provisions of the relevant provisions shall be studied whether the new versions of these documents are used. This is an undated reference document, the latest of which is applicable to this part. G/T: 2.9.41989 Technical conditions for hot aging of round explosive springs (NE9[18H2702:17) (8/18923-1988 Surface corrosion and rust removal grades of materials before use (EV1S08501-1:1988) GR/T92B6-1998 Cross-cut test for color-adding and paint-removing films (eqVISO2409:1992) JB/T6406.3-1992 Electric pressure block brake actuator (R:241>IN1545J:1489) 3 Terms and definitions
The following terms and definitions apply to this standard. 3.1
Brake release brake relcasing
The process by which the braking surface of the brake is separated from the active wheel surface and the required torque is eliminated. 3.2wwW.bzxz.Net
Brake settling
The process by which the braking surface of the brush brake is in contact with the brake wheel surface and a certain braking torque is established. 3.3
Rated load Tatedloa
The working force of the brake spring when the brake produces the rated braking torque. 3.4
Working stroke workiagsinke
Front brake release 3.5
The distance between the middle part of the brake surface of the pad and the brake wheel surface when the brake is released. 3.6
The shoe contact ignition
The shoe contact ignition is a device that can make the brake surface not contact the brake wheel surface when the brake is closed. 3.7
Static test statie test
The test to examine the structure function and action performance of the brake. The main purpose is to ensure that during the test, the brake wheel does not need to be driven by power. JB/T1540122004
Dynamic test dynamie(Ls
The test to assess the dynamic braking force and other dynamic performance of the brake. Its main characteristics are: During the test, the brake wheel needs to be driven by power::
4 Test content
4.1 The test of the brake system of high-grid wind turbine is to verify whether the brake system meets the certification requirements under actual working conditions.
4.2 The test content should include structural inspection, performance test, brake spring test, speed control test and performance quality test. The test samples should be fully representative of this batch of products. 4.3 The test should provide a report document, which includes data, test conditions, test equipment and relevant information on the test results. A complete description of the test process and detailed description of the instruments and data used to facilitate data analysis should be provided. 5 Test requirements
5.1 The measuring tools and instruments used in the test shall comply with the relevant national metrological verification regulations. 5.2 When a specified brake has more than one preset torque, the product under test shall be the one with the highest rated value. 5.3 The test bench used for dynamic test shall be approved by the quality inspection department. 6 Structural inspection
6.1 Use the daily test method to check the internal fixation of the brake pad, and use the universal gauge to check the minimum loss thickness of the front brake pad: 8.2 Use the daily test method to check the brake's backlash, short force adjustment device, follow-up positioning device and release specification, and select and operate according to the product instructions to verify its effectiveness. When there is a backlash and torque automatic compensation device: The brake should be tested on the test bench to verify its effectiveness. The operation frequency and number of action tests depend on the actual situation of the product. 6.3 Use the daily test method to check the lubrication condition of the variable brake, the position, withdrawal distance and equalization of the 64 brake block and the reduction of the working stroke of the actuator on the test bench. The method is static action test and the method is as follows:
4! Install the brake according to the product manual, and adjust the brake to the specified withdrawal distance range and rated load state:
5) Disassemble and operate the actuator for no less than 5 times, and use the test method to check the position and withdrawal distance of the pad:) After the inspection of the position and withdrawal distance of the pad is completed, re-adjust the brake to the predetermined maximum withdrawal state, and intermittently operate the brake 5 times to make the brake in a closed state, and use the measurement to measure the performance of the actuator for 7 performance tests ||tt| |7.1 Braking torque
The braking torque test is carried out on the test bench in the form of dynamic test. The same test product and the same parameters are tested as above, and the average value is taken as the test result (test principle, before there is a unified regulation, the product manufacturer shall determine it by himself!). 7.2 Propeller thrust test
The propeller thrust test is carried out on a separate test bench. The method is: apply the corresponding load or other equivalent load to the installed propeller, and carry out the maximum thrust test respectively. Each item The test is to be carried out for more than 5 times, and each test shall comply with the provisions of JT640.
7.3 Dynamic friction performance of brake pads
The friction performance test of brake fluid is carried out on a test bench in the form of dynamic test. The test principle and data processing method can be determined by the product manufacturer before there is a unified regulation.
7.4 Dynamic spring test
The brake spring test is carried out in accordance with the provisions of (I3:11239.4). 7.5 Accuracy inspection ||tt t||7.5.1 The surface quality of the brake components shall be inspected by acoustic testing using the coloring method. 7.5.2 The surface quality between the brake block and the brake body shall be inspected by the scale. 7.5 Surface quality inspection
7.6.1 Before the brake components are installed, the surface quality and surface rust shall be inspected according to the provisions of G/T8023. 7.6.2 After installation, the surface quality and surface rust shall be inspected according to the method specified in B/T9286. After installation, the surface quality and surface rust shall be inspected according to the same method. 7.6.3
FBE10421.2--20C4
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.