Intelligent acquisition device suitable for water-turbine generator set
By using intelligent acquisition devices with PXI acquisition chassis and embedded intelligent controllers in the hydropower generator set, the requirements of diverse signals and high sampling frequency are solved, and efficient and reliable data acquisition is achieved to meet the monitoring needs of smart power plants.
Patent Information
- Application Number
- CN202420351909.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-02-26
- Publication Date
- 2024-12-20
- Estimated Expiration
- 2034-02-26
AI Technical Summary
The front-end monitoring device of the hydraulic turbine generator set has various output signals, and the sampling frequency is required. The existing acquisition solutions cannot meet the needs and cannot achieve comprehensive monitoring.
Using PXI acquisition chassis, it has a controller and multiple acquisition cards. The sensor is connected through the terminal adapter board. The controller communicates with the upper server. It supports multiple types of signal access, and has a high sampling frequency and the number of acquisition cards. The redundancy of the channel is high, and the controller is an embedded intelligent controller, which is set in the generator wind tunnel without a fan to dissipate heat.
It realizes simultaneous access to various types of sensor signals, supports 100-magnitude sensor measurement point input, reduces the difficulty of back-end data processing, has high data acquisition capabilities, real-time and reliability, and is suitable for smart power plants construction.
Smart Images
Figure CN222213224U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to an intelligent data collection device suitable for a water turbine generator set. Background Art
[0002] The hydropower generator set is equipped with a certain number of online monitoring sensors. The output of the sensor is generally an analog electrical signal, which needs to be converted into a digital signal through an acquisition device and then enter the computer monitoring system of the power station. In the hydropower industry, data acquisition is generally closely integrated with the monitoring system. In conventional configurations, the basic automation part generally uses a programmable logic controller (PLC), and its function is often to complete specific on-site control tasks, and the network is relatively closed.
[0003] Since the 1990s, with the rapid development of PC-based industrial computers, industrial PC-based automation systems have developed rapidly due to the high reliability and low cost of industrial PCs. Industrial PC-based data acquisition systems have also made rapid progress. In the hydropower industry, this type of data acquisition system also has individual application cases, mainly based on PCI bus technology acquisition systems.
[0004] In addition, with the continuous advancement of smart power plant construction, the demand for online monitoring of hydro-turbine generator sets, the core equipment of power plants, continues to increase. In order to effectively eliminate monitoring blind spots and achieve comprehensive monitoring of hydro-turbine generator sets, a large number of different types of front-end monitoring devices need to be configured. The output signal types of these front-end monitoring devices are diverse, and the required sampling frequencies are different, which puts higher requirements on the design of the acquisition device. The existing commonly used acquisition solutions for hydropower stations cannot meet the usage needs. Utility Model Content
[0005] The technical problem to be solved by the utility model is to provide an intelligent data acquisition device suitable for a hydro-turbine generator set, which is used to solve the problem that the output signal types of the front-end monitoring device are diverse, the required sampling frequencies are different, and the existing data acquisition scheme cannot meet the use requirements.
[0006] In order to solve the above problems, the technical solution of the utility model is:
[0007] An intelligent data acquisition device suitable for a hydro-turbine generator set comprises a PXI data acquisition chassis, wherein a controller and a plurality of data acquisition cards are arranged in the PXI data acquisition chassis, the plurality of data acquisition cards are connected to a plurality of sensors via a terminal adapter board, and the controller is connected to a host server for communication via a switch.
[0008] The number of acquisition cards shall not be less than 100, and the channel redundancy shall not be less than 20%.
[0009] The sampling frequencies of various acquisition cards are different. The highest sampling frequency among multiple acquisition cards should be no less than 2MHz, and the number of channels with the highest sampling frequency should be no less than 4.
[0010] The controller is an embedded intelligent controller.
[0011] The PXI acquisition chassis is arranged in the generator wind tunnel, and there is no fan in the PXI acquisition chassis.
[0012] The beneficial effects of the utility model are as follows: by adopting the PXI bus unit, it can meet the simultaneous access of various types of sensor signals such as temperature, flow, pressure, vibration, noise, acoustic emission, serial communication, switch input & output, etc. It also supports the input of hundreds of sensor measurement points and supports high sampling frequency data acquisition. The data is processed preliminarily at the acquisition end, which reduces the difficulty and complexity of back-end data processing while retaining the regularity of the data. This intelligent acquisition device has changed the technical route of sensor data acquisition in hydropower stations, and has higher data acquisition capabilities, higher real-time performance, and higher reliability, and is more suitable for the construction needs of smart power plants for intelligent upgrades. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The utility model is further described below in conjunction with the accompanying drawings:
[0014] Figure 1 It is a structural schematic diagram of the utility model.
[0015] In the figure: sensor 1, terminal adapter board 2, PXI acquisition chassis 3, controller 4, acquisition card 5, switch 6, upper server 7. DETAILED DESCRIPTION
[0016] like Figure 1 As shown, an intelligent acquisition device suitable for a hydro-turbine generator set includes a PXI acquisition chassis 3, in which a controller 4 and multiple acquisition cards 5 are arranged, the multiple acquisition cards 5 are connected to multiple sensors 1 through a terminal adapter board 2, and the controller 4 is connected to a host server 7 for communication through a switch 6.
[0017] Multiple acquisition cards 5 can meet various types such as temperature, flow, pressure, vibration, noise, acoustic emission, serial port communication, switch input & output, etc., covering the simultaneous access of different levels of voltage signals, 4~20mA current signals, etc.
[0018] The number of acquisition cards 5 is not less than 100, and the channel redundancy is not less than 20%. These acquisition channel numbers can meet the comprehensive monitoring needs of the hydropower station.
[0019] The sampling frequencies of the acquisition cards 5 are different. The highest sampling frequency among the multiple acquisition cards 5 should be no less than 2 MHz, and the number of channels with the highest sampling frequency should be no less than 4.
[0020] The controller 4 is an embedded intelligent controller 4 .
[0021] The PXI acquisition chassis 3 is arranged in the generator wind tunnel, and there is no fan in the PXI acquisition chassis 3. By utilizing the wind tunnel to dissipate heat, the electrical components in the PXI acquisition chassis 3 can be operated in an environment with a temperature below 45°C for a long time.
[0022] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.
Claims
1. An intelligent data collection device suitable for a hydro-generator set, characterized in that: The PXI acquisition chassis (3) comprises a controller (4) and a plurality of acquisition cards (5) arranged in the PXI acquisition chassis (3); the plurality of acquisition cards (5) are connected to a plurality of sensors (1) via a terminal adapter plate (2); and the controller (4) is connected to a host server (7) for communication via a switch (6).
2. The intelligent data collection device suitable for a hydro-generator set according to claim 1, characterized in that: The number of acquisition cards (5) is not less than 100, and the channel redundancy is not less than 20%.
3. The intelligent data collection device suitable for a hydro-generator set according to claim 1, characterized in that: The sampling frequencies of the various acquisition cards (5) are different. The highest sampling frequency among the multiple acquisition cards (5) should be no less than 2 MHz, and the number of channels with the highest sampling frequency should be no less than 4.
4. An intelligent data collection device suitable for a hydro-generator set according to any one of claims 1 to 3, characterized in that: The controller (4) is an embedded intelligent controller (4).
5. An intelligent data collection device suitable for a hydro-generator set according to any one of claims 1 to 3, characterized in that: The PXI acquisition chassis (3) is arranged in the generator wind tunnel, and the PXI acquisition chassis (3) does not have a fan.