CN105066862A - Tunnel suspension fan base stability on-line detection method and system based on displacement measurement - Google Patents
Tunnel suspension fan base stability on-line detection method and system based on displacement measurement Download PDFInfo
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- 238000006073 displacement reaction Methods 0.000 title claims abstract description 43
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- 238000013139 quantization Methods 0.000 claims description 9
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- 238000007781 pre-processing Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000012544 monitoring process Methods 0.000 abstract description 6
- 238000009434 installation Methods 0.000 description 5
- 238000007586 pull-out test Methods 0.000 description 4
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- 239000006249 magnetic particle Substances 0.000 description 1
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Abstract
本发明公开了一种基于位移测量的隧道悬挂风机基础稳定性在线检测方法，具体包括：在预埋钢板下方设置电涡流位移传感器；信息处理单元获取预埋钢板与电涡流位移传感器的实际距离信息；当实际距离信息大于标准参考距离时，则判断预埋钢板基础松动。本发明能长期持续监测，只要预埋件基础出现松动，检测到的预埋件基础与传感器之间的距离会出现显著的差异。监测过程完全不影响设备的运行，实现该方法的系统原理简单，成本低廉，操作简便、试验结果直观可靠，符合保障公路隧道安全运行的需要。
The invention discloses an online detection method for foundation stability of a tunnel suspended fan based on displacement measurement, which specifically includes: setting an eddy current displacement sensor under a pre-embedded steel plate; and an information processing unit acquiring actual distance information between the pre-embedded steel plate and the eddy current displacement sensor ; When the actual distance information is greater than the standard reference distance, it is judged that the pre-embedded steel plate foundation is loose. The invention can continuously monitor for a long time, and as long as the foundation of the embedded part becomes loose, the detected distance between the foundation of the embedded part and the sensor will have a significant difference. The monitoring process does not affect the operation of the equipment at all. The principle of the system to realize this method is simple, the cost is low, the operation is simple, the test results are intuitive and reliable, and it meets the needs of ensuring the safe operation of highway tunnels.
Description
技术领域technical field
本发明涉及悬挂设备稳定性监测领域，具体地说，是一种用于隧道悬挂风机基础稳定性在线监测方法和系统。The invention relates to the field of stability monitoring of suspension equipment, in particular to a method and system for on-line monitoring of foundation stability of a tunnel suspension fan.
背景技术Background technique
随着我国公路交通的迅速发展，公路隧道大量修建。到2013年底，我国公路隧道已突破万座大关。长大的公路隧道普遍设置有机械通风装置，而其中95％以上采用了悬挂式射流通风，所以悬挂的射流风机基础的稳定性日益得到了人们的高度重视。With the rapid development of highway traffic in our country, a large number of highway tunnels have been built. By the end of 2013, my country's road tunnels had broken through the 10,000 mark. Long road tunnels are generally equipped with mechanical ventilation devices, and more than 95% of them use suspended jet ventilation, so the stability of the suspended jet fan foundation has increasingly been highly valued by people.
如图1所示，射流风机的安装方式一般是先在隧道拱顶预埋钢板，钢板与预埋钢筋焊接连接，然后将风机安装支架焊接在钢板上。由于风机较重，且在运行中会产生一定的震动，对基础难免有不良影响，所以有必要定期或在线对预埋件基础的稳定性作检(监)测。As shown in Figure 1, the installation method of the jet fan is generally to pre-embed the steel plate on the tunnel vault, weld the steel plate to the pre-embedded steel bar, and then weld the fan mounting bracket to the steel plate. Since the fan is heavy and will generate certain vibrations during operation, it will inevitably have adverse effects on the foundation, so it is necessary to regularly or online check (monitor) the stability of the foundation of the embedded parts.
现有的检测方法主要为定期检测，一般有以下三种方法：(1)再作抗拔试验；(2)采用无损探伤(超声波或磁粉探伤)；(3)振动测试方法：来源于已公布的专利：一种用于公路隧道悬挂风机基础稳定性检测的方法和系统(201010115147.7)。The existing testing methods are mainly regular testing, and there are generally three methods as follows: (1) pullout test; (2) non-destructive testing (ultrasonic or magnetic particle testing); (3) vibration testing method: from the published Patent: A method and system for foundation stability detection of suspended wind turbines in highway tunnels (201010115147.7).
而现有的各种检测方法均存在缺陷：(1)作抗拔试验，由于风机体型较大，一般直径均在一米多，在风机已安装的条件下抗拔试验操作非常困难，且观测也非常困难。如果将风机卸下再作抗拔试验，工作量较大，试验周期也过长。(2)采用无损探伤，主要检测预埋钢板与安装支架之间连接的可靠性，而实际上对预埋钢板与预埋钢筋之间连接的可靠性检测较为困难，且不能检测预埋钢筋和混凝土之间的松动情况。(3)专利201010115147.7所公布的测试方法，设备成本较高且要求检测人员具有丰富的经验，该方法主要用于隧道悬挂风机基础的定期检测。However, there are defects in various existing detection methods: (1) for the pull-out test, because the fan is large in size and generally has a diameter of more than one meter, it is very difficult to operate the pull-out test under the condition that the fan has been installed, and the observation Also very difficult. If the fan is removed and the pull-out test is performed, the workload will be large and the test period will be too long. (2) Non-destructive testing is used to mainly detect the reliability of the connection between the embedded steel plate and the mounting bracket. In fact, it is difficult to detect the reliability of the connection between the embedded steel plate and the embedded steel bar, and it cannot detect the embedded steel bar and the Looseness between concrete. (3) The test method disclosed in patent 201010115147.7 requires high equipment cost and requires experienced testers. This method is mainly used for regular testing of tunnel suspension fan foundations.
发明内容Contents of the invention
鉴于此，本发明的目的是提供一种用于隧道悬挂风机基础稳定性在线检测的方法和系统，该方法主要通过检测预埋件基础的变形，来判断预埋钢板背后与预埋钢筋之间连接的完好情况。In view of this, the object of the present invention is to provide a method and system for on-line detection of the stability of the tunnel suspension fan foundation. The integrity of the connection.
本发明的目的之一是通过以下技术方案实现的，一种基于位移测量的隧道悬挂风机基础稳定性在线检测方法，具体包括：One of the objects of the present invention is achieved through the following technical solutions, an online detection method for the foundation stability of a tunnel suspended fan based on displacement measurement, which specifically includes:
在预埋钢板下方设置电涡流位移传感器；Set the eddy current displacement sensor under the embedded steel plate;
信息处理单元获取预埋钢板与电涡流位移传感器的实际距离信息；The information processing unit obtains the actual distance information between the embedded steel plate and the eddy current displacement sensor;
当实际距离大于标准参考距离时，则判断预埋钢板基础松动。When the actual distance is greater than the standard reference distance, it is judged that the pre-embedded steel plate foundation is loose.
本发明的目的之二是通过以下技术方案来实现的，一种基于位移测量的隧道悬挂风机基础稳定性在线检测系统，包括电涡流位移传感器和信息处理单元，所述电涡流位移传感器安装于隧道悬挂风机预埋件下方，所述电涡流位移传感器与信息处理单元连接，所述信息处理单元用于得到预埋钢板与电涡流位移传感器的距离信息。The second object of the present invention is achieved through the following technical solutions. An online detection system for the foundation stability of tunnel suspended fans based on displacement measurement includes an eddy current displacement sensor and an information processing unit. The eddy current displacement sensor is installed in the tunnel Hanging below the embedded part of the fan, the eddy current displacement sensor is connected to an information processing unit, and the information processing unit is used to obtain the distance information between the embedded steel plate and the eddy current displacement sensor.
优选的，所述信息处理单元包括前置处理器、采样与量化单元和CPU，所述前置处理器的输入端与电涡流位移传感器连接，所述前置处理器的输出端与采样与量化单元的输入端连接，所述采样与量化单元的输出端与CPU连接。Preferably, the information processing unit includes a pre-processor, a sampling and quantization unit and a CPU, the input of the pre-processor is connected to the eddy current displacement sensor, and the output of the pre-processor is connected to the sampling and quantization The input end of the unit is connected, and the output end of the sampling and quantization unit is connected with the CPU.
优选的，该系统还包括数据存储单元，所述数据存储单元与CPU连接。Preferably, the system further includes a data storage unit connected to the CPU.
优选的，该系统还包括计算机，所述CPU通过以太网接口或无线通信接口与计算机连接，信息处理单元获取的预埋钢板与电涡流位移传感器的距离信息通过以太网或无线的方式传输给计算机。Preferably, the system also includes a computer, the CPU is connected to the computer through an Ethernet interface or a wireless communication interface, and the distance information between the embedded steel plate and the eddy current displacement sensor acquired by the information processing unit is transmitted to the computer through Ethernet or wireless .
由于采用了上述技术方案，本发明具有如下的优点：Owing to adopting above-mentioned technical scheme, the present invention has following advantage:
本发明能长期持续监测，只要预埋件基础出现松动，检测到的预埋件基础与传感器之间的距离会出现显著的差异。监测过程完全不影响设备的运行，实现该方法的系统原理简单，成本低廉，操作简便、试验结果直观可靠，符合保障公路隧道安全运行的需要。The invention can continuously monitor for a long time, and as long as the foundation of the embedded part becomes loose, the detected distance between the foundation of the embedded part and the sensor will have a significant difference. The monitoring process does not affect the operation of the equipment at all. The principle of the system to realize the method is simple, the cost is low, the operation is simple, the test results are intuitive and reliable, and it meets the needs of ensuring the safe operation of the highway tunnel.
附图说明Description of drawings
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作进一步的详细描述，其中：In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings, wherein:
图1为风机的安装置图；Fig. 1 is the installation drawing of blower fan;
图2为本发明所述系统结构图；Fig. 2 is a system structure diagram of the present invention;
图3为正常时预埋钢板与涡流位移传感器距离；Figure 3 shows the distance between the pre-embedded steel plate and the eddy current displacement sensor under normal conditions;
图4为预埋钢板被拉出时与涡流位移传感器的距离。Figure 4 shows the distance between the embedded steel plate and the eddy current displacement sensor when it is pulled out.
具体实施方式Detailed ways
以下将结合附图，对本发明的优选实施例进行详细的描述；应当理解，优选实施例仅为了说明本发明，而不是为了限制本发明的保护范围。The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings; it should be understood that the preferred embodiments are only for illustrating the present invention, rather than limiting the protection scope of the present invention.
图1为风机的安装置图；图2为本发明所述系统结构图；图3为正常时预埋钢板与涡流位移传感器距离；图4为预埋钢板被拉出时与涡流位移传感器的距离。Fig. 1 is the installation diagram of fan; Fig. 2 is the system structure diagram of the present invention; Fig. 3 is the distance between the pre-embedded steel plate and the eddy current displacement sensor when it is normal; Fig. 4 is the distance between the pre-embedded steel plate and the eddy current displacement sensor when it is pulled out .
如图1所示，公路隧道悬挂风机的预埋件包括设置在混凝土结构中的预埋钢筋A0。焊接在预埋钢筋A0上的预埋钢板A1，以及焊接在预埋钢板A1上的安装支架A2，在所述安装支架A2上用螺栓固定射流风机A3。As shown in Figure 1, the embedded parts of the suspended fan in the highway tunnel include the embedded steel bar A0 set in the concrete structure. The embedded steel plate A1 welded on the embedded steel bar A0, and the installation bracket A2 welded on the embedded steel plate A1, the jet fan A3 is fixed with bolts on the installation bracket A2.
对风机基础稳定性在线检测的方法具体包括：The methods for online detection of wind turbine foundation stability specifically include:
在预埋钢板下方设置电涡流位移传感器；Set the eddy current displacement sensor under the embedded steel plate;
信息处理单元获取预埋钢板与电涡流位移传感器的实际距离信息；The information processing unit obtains the actual distance information between the embedded steel plate and the eddy current displacement sensor;
当实际距离大于标准参考距离时(确认预埋件基础稳定健康条件下，涡流位移传感器与预埋钢板的距离，如2mm)，则判断预埋钢板基础松动。When the actual distance is greater than the standard reference distance (the distance between the eddy current displacement sensor and the embedded steel plate is confirmed to be stable and healthy under the condition of the embedded part foundation, such as 2mm), it is judged that the embedded steel plate foundation is loose.
如图2所示，用于实现隧道悬挂风机基础稳定性在线检测系统，包括电涡流位移传感器2和信息处理单元，所述电涡流位移传感器与信息处理单元3连接，所述电涡流位移传感器安装于隧道悬挂风机预埋件下方，电涡流位移传感器通过连接构件4固定在隧道拱顶二衬上；所述信息处理单元用于得到预埋钢板与电涡流位移传感器的距离信息。预埋钢板与电涡流位移传感器之间的距离与电涡流位移传感器的输出信号有对应关系。As shown in Figure 2, the online detection system for realizing the foundation stability of the tunnel suspension fan includes an eddy current displacement sensor 2 and an information processing unit, the eddy current displacement sensor is connected to the information processing unit 3, and the eddy current displacement sensor is installed Below the embedded part of the tunnel suspension fan, the eddy current displacement sensor is fixed on the second lining of the tunnel vault through the connecting member 4; the information processing unit is used to obtain the distance information between the embedded steel plate and the eddy current displacement sensor. The distance between the embedded steel plate and the eddy current displacement sensor has a corresponding relationship with the output signal of the eddy current displacement sensor.
优选的，所述信息处理单元包括前置处理器、采样与量化单元和CPU，所述前置处理器的输入端与电涡流位移传感器连接，所述前置处理器的输出端与采样与量化单元的输入端连接，前置处理器的输出信号传递到信号采集单元，得到预埋钢板与电涡流传感器的距离信息，所述采样与量化单元的输出端与CPU连接。Preferably, the information processing unit includes a pre-processor, a sampling and quantization unit and a CPU, the input of the pre-processor is connected to the eddy current displacement sensor, and the output of the pre-processor is connected to the sampling and quantization The input end of the unit is connected, the output signal of the pre-processor is transmitted to the signal acquisition unit, and the distance information between the embedded steel plate and the eddy current sensor is obtained, and the output end of the sampling and quantization unit is connected to the CPU.
该系统还包括数据存储单元，所述数据存储单元与CPU连接。The system also includes a data storage unit connected to the CPU.
作为对本实施例的改进，所述预埋钢板与电涡流传感器的距离信息可在本地处理，也可通过有线或无线通信系统传输到监控室统一处理。因此该系统还包括计算机，所述CPU通过以太网接口或无线通信接口与计算机连接，信息处理单元获取的预埋钢板与电涡流位移传感器的距离信息通过以太网或无线的方式传输给计算机。As an improvement to this embodiment, the distance information between the embedded steel plate and the eddy current sensor can be processed locally, or can be transmitted to the monitoring room for unified processing through a wired or wireless communication system. Therefore, the system also includes a computer, the CPU is connected to the computer through an Ethernet interface or a wireless communication interface, and the distance information between the embedded steel plate and the eddy current displacement sensor obtained by the information processing unit is transmitted to the computer through the Ethernet or wireless.
本发明能够实现基础的长期在线监测，实现该方法的系统原理也简单，成本低廉，系统操作简便、检测结果直观可靠，符合保障公路隧道安全运行的需要。The invention can realize basic long-term on-line monitoring, the system principle for realizing the method is also simple, the cost is low, the system is easy to operate, the detection result is intuitive and reliable, and meets the requirement of ensuring the safe operation of the highway tunnel.
以上所述仅为本发明的优选实施例，并不用于限制本发明，显然，本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。这样，倘若本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内，则本发明也意图包含这些改动和变型在内。The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these modifications and variations.
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| CN110454209B (en) * | 2019-08-09 | 2024-11-29 | 江苏中车机电科技有限公司 | Interval tunnel jet fan installation and maintenance platform and installation and maintenance method |
| CN110594184A (en) * | 2019-10-14 | 2019-12-20 | 中铁第四勘察设计院集团有限公司 | A safety monitoring device and method for a tunnel hoisting fan |
| CN113358214A (en) * | 2021-08-10 | 2021-09-07 | 陕西高速电子工程有限公司 | Fault detection method for jet fan structural body and related equipment |
| CN116291664A (en) * | 2023-03-27 | 2023-06-23 | 浙江双阳风机有限公司 | Subway tunnel fan stop device |
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