Steel-concrete tower drum C-shaped assembly and internode gap monitoring device

Abstract

The utility model provides a reinforced concrete tower drum C-shaped assembly and internode gap monitoring device, a reinforced concrete tower drum is formed by splicing a plurality of tower drum sections, each tower drum section is formed by splicing a plurality of C-shaped assemblies, and the monitoring device monitors gaps at the splicing positions of the C-shaped assemblies and gaps among the tower drum sections. The reinforced concrete tower drum C-shaped assembly and internode gap monitoring device comprises a plurality of hanging rings, a plurality of monitoring devices and a plurality of monitoring devices, wherein the hanging rings are uniformly distributed on the two sides of a splicing gap of the C-shaped assembly; the varnished wires sequentially penetrate through the hanging rings on the two sides of the gap in a staggered mode, all the hanging rings are connected together in series, and the varnished wires are fixedly connected with all the hanging rings; and the acquisition unit is connected with two ends of the enameled wire and acquires an on-off signal or a resistance signal of the enameled wire. The monitoring device is deployed on the C-type assembly gap and the inter-node gap in a full-covering manner through the enameled wire, the breakage of the enameled wire is identified through an I / O signal or a resistance value signal, and early warning is carried out, so that comprehensive monitoring of the C-type assembly gap and the inter-node gap is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine steel-concrete tower monitoring, in particular to a steel-concrete tower C-type component and an inter-node gap monitoring device. Background Art

[0002] As wind resources gradually become saturated, wind power project development tends to be in plain areas with good wind resources. It is extremely challenging to develop wind power in plain areas. Wind resources in plain areas have the significant characteristics of high shear, and wind speed increases rapidly with height. In terms of design, the tower is raised to obtain a higher wind speed, and the diameter of the wind turbine impeller is increased to increase the wind turbine kilowatt swept area, so that wind resources have a higher economic development value. The increase in tower height can significantly increase power generation and increase wind farm revenue. However, for ultra-high wind turbines over 160 meters, the use of steel-concrete towers has become the best choice for increasing wind turbine height and ensuring unit reliability due to stability, economy and other considerations. The tower of the mixed tower unit is composed of concrete sections and steel tower sections, which play a supporting role in the wind turbine generator set. The loads and vibrations in the operation of the wind turbine generator set all act on the tower section. There are differences in the design and construction of the mixed tower. It is particularly important to obtain tower monitoring data in real time, analyze, study, process, and conduct real-time warnings in health monitoring.

[0003] The concrete tower section is made up of multiple tower sections, and each tower section is generally made up of C-type components. Therefore, there is a gap between the two C-type components of each tower section and between each tower section. This gap is similar to the gap in the tower flange of the steel tower structure, and in the concrete tower, this gap is also a part that is very easy to be damaged. If the gap is too large, it will cause the overall stress of the concrete tower to be unstable, and in severe cases, it is easy to cause the tower to be damaged and collapse and accidents. Therefore, it is necessary to monitor the gaps between the C-type components and the gaps between the sections of the steel-concrete tower. Summary of the invention

[0004] The utility model provides a monitoring device for C-type components and inter-node gaps of a steel-concrete tower. The monitoring device is deployed on the gaps of the C-type components and the gaps between the nodes through full coverage of enameled wires, identifies the breakage of the enameled wires through I / O signals or resistance signals, and issues an early warning, thereby achieving comprehensive monitoring of the gaps of the C-type components and the gaps between the nodes.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] A steel-concrete tower C-type component and inter-section gap monitoring device, the steel-concrete tower is spliced ​​by multiple tower sections, each tower section is spliced ​​by multiple C-type components, the monitoring device monitors the gap at the splicing of the C-type components and the gap between tower sections, the steel-concrete tower C-type component and inter-section gap monitoring device comprises:

[0007] A plurality of lifting rings are evenly arranged on both sides of the splicing gap of the C-shaped component;

[0008] The enameled wire is staggered through the rings on both sides of the gap in sequence, all the rings are connected in series, and the enameled wire is fixedly connected to all the rings;

[0009] The collection unit is connected to both ends of the enameled wire to collect the on / off signal or resistance signal of the enameled wire.

[0010] The lifting ring is 10 cm to 20 cm away from the center of the gap.

[0011] The hanging ring comprises a fixed bottom plate and hanging ears arranged on the fixed bottom plate, and the fixed bottom plate is adhered and fixed to both sides of the gap; the fixed bottom plate is circular, elliptical or polygonal, and the hanging ears are semicircular or semi-elliptical.

[0012] The enameled wire is wound and bonded to be fixed on the hanging ring.

[0013] The acquisition unit is an I / O acquisition module or a resistance measurement module, which determines whether the enameled wire is broken by acquiring an I / O on / off signal or a resistance value signal.

[0014] An early warning module is arranged in the collection unit.

[0015] The length of the enameled wire between the two hanging rings is adjusted according to the size of the set gap threshold.

[0016] The enameled wire is connected to the collection unit via a signal line.

[0017] The enameled wire is arranged in a Z shape or a V shape.

[0018] The lifting rings are all installed on the inner wall of the steel-concrete tower, and the collection unit is installed on the platform inside the tower.

[0019] Compared with the prior art, the beneficial effects of the utility model are: 1. The steel-concrete tower C-type component and inter-node gap monitoring device provided by the utility model can be deployed on the C-type component gap and the inter-node gap through enameled wire to fully cover the gap. When the gap in the monitoring part becomes larger, the enameled wire will be broken. The breakage of the enameled wire can be identified through I / O signals or resistance signals, and an early warning is issued to achieve comprehensive monitoring of the C-type component gap and the inter-node gap.

[0020] 2. In the utility model, the enameled wire is fixed by a lifting ring. By adjusting the position of the lifting ring, the enameled wire can be deployed in a Z shape or a V shape. The length of the enameled wire between the two lifting rings can also be adjusted, so as to adjust the gap threshold to meet the setting of the gap threshold under the actual working conditions of the wind turbine. That is, the gap threshold size is adjusted by adjusting the tightness of the enameled wire fixed between the two lifting rings.

[0021] 3. In the utility model, the lifting ring and the enameled wire are arranged on the inner wall of the tower, and the collection unit is arranged on the platform inside the tower, which is convenient for installation and maintenance of the monitoring device.

[0022] 4. The steel-concrete tower C-type assembly and inter-section gap monitoring device provided by the utility model have low cost, simple application, accurate identification, and can monitor a wide range of gaps. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the layout of the C-type steel-concrete tower assembly and the inter-section gap monitoring device provided by the utility model;

[0024] Figure 2 It is a structural schematic diagram of the lifting ring in the utility model;

[0025] Figure 3 An early warning flow chart of the steel-concrete tower C-type assembly and inter-section gap monitoring device provided by the utility model;

[0026] In the figure: 1-C type component, 2-lifting ring, 21-fixed base plate, 22-lifting ear, 3-enameled wire, 4-collection unit, 5-signal line, 6-platform. DETAILED DESCRIPTION

[0027] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0028] The layout diagram of the steel-concrete tower C-type assembly and the inter-section gap monitoring device provided by the utility model is as follows Figure 1 As shown, the steel-concrete tower is composed of multiple tower sections, and each tower section is composed of multiple C-type components 1. There are gaps at the joints between the C-type components and the joints of each tower section, namely the C-type component gaps and inter-section gaps. When the wind turbine is working, the tower is constantly affected by the load and vibration at the blades and impellers. The joints of the C-type components and the tower sections are the weak points of the steel-concrete tower and are most likely to cause safety risks. Therefore, in this application, the gaps at the joints of the C-type components (C-type component gaps) and the gaps between the tower sections (inter-section gaps) are monitored by a monitoring device. If the gap monitored is the gap size under normal load conditions of the tower, it means that the tower is safe and risk-free; if the gap monitored is significantly larger than the gap under normal load conditions of the tower, it means that there is a safety risk in the tower and it needs to be repaired in time to avoid safety accidents and economic losses.

[0029] The steel-concrete tower C-type component and inter-section gap monitoring device provided in this embodiment includes a lifting ring 2, an enameled wire 3 and a collection unit 4, wherein a plurality of lifting rings are evenly arranged on both sides of the splicing gap of the C-type component. Specifically, the lifting ring includes a fixed bottom plate 21 and a lifting ear 22 arranged on the fixed bottom plate, such as Figure 2As shown, the fixing base plate is glued and fixed on both sides of the gap. Furthermore, the fixing base plate can be circular, elliptical, polygonal or other shapes, and the hanging ears can be semicircular, semi-elliptical or other similar shapes that can realize the winding, fixing and bonding of the enameled wire. During actual installation, the distance between the hanging ring and the center of the gap must ensure that the hanging ring avoids the gap splicing part and other positions that affect the installation. The position of the hanging ring can be adjusted as needed. Preferably, the distance between the hanging ring and the center of the gap is 10cm to 20cm.

[0030] The enameled wires are alternately passed through the rings on both sides of the gap in sequence, all the rings are connected in series, and the enameled wires are fixedly connected to all the rings; specifically, the enameled wires are wound around and bonded to the rings when passing through them. Preferably, by changing the positions of the rings, the enameled wires can be arranged in a Z-shape or a V-shape. In this embodiment, the rings on both sides of the gap correspond to each other one by one, so the enameled wires are arranged in a Z-shape. Figure 1 In actual settings, the rings on both sides of the gap can also be staggered, and the enameled wire is deployed in a V shape. In actual settings, it is only necessary to ensure that the enameled wire crosses the gap and is fixed on the rings on both sides. Therefore, the enameled wire can also be deployed in other ways that can identify the increase or cracking of the gap.

[0031] After the enameled wire connects all the rings in series, the two ends of the enameled wire (i.e., the enameled wire at the starting ring and the end ring) are connected to the collection unit, and the collection unit collects the on-off signal or resistance signal of the enameled wire. Specifically, the enameled wire is connected to the collection unit through a signal line 5, that is, the enameled wire at the starting ring and the end ring are welded to the signal line, and the signal line is connected to the collection unit, so that the signal line transmits the on-off signal or resistance signal of the enameled wire to the collection unit. In actual settings, the collection signal is not limited to these two methods. Preferably, the rings are installed on the inner wall of the steel-concrete tower, and the collection unit is installed on a platform 6 inside the tower. Figure 1 , easy to install and maintain.

[0032] In this embodiment, the acquisition unit is an I / O acquisition module or a resistance measurement module, which determines whether the enameled wire is broken by acquiring an I / O on / off signal or a resistance value signal. Figure 3 As shown. When the gap of the C-type component or the gap between the nodes expands abnormally, the enameled wire is broken. The enameled wire signal can be connected to the I / O acquisition module, or the enameled wire signal can be connected to the resistance measurement module. By judging whether the I / O on-off signal is normally turned on or whether the resistance value changes abnormally, it can be determined whether the enameled wire is broken. If the enameled wire is broken, it means that the gap has become abnormally large, which may affect the safety of the tower, and personnel should be arranged for maintenance in time. Preferably, an early warning module is provided in the acquisition unit. If the I / O on-off signal or the resistance value signal shows that the gap is abnormal, the early warning module will issue an early warning.

[0033] In this embodiment, the gap threshold can be set according to the actual situation, and the fixed length of the enameled wire between the two rings is determined by the set gap threshold. If the gap threshold needs to be adjusted during long-term monitoring, the gap threshold size can be adjusted by adjusting the fixed length of the enameled wire between the two rings. When the threshold needs to be adjusted to a smaller value, the enameled wire is tightened; when the threshold needs to be adjusted to a larger value, the enameled wire is loosened.

[0034] The steel-concrete tower C-type component and inter-node gap monitoring device provided by the utility model can be deployed on the C-type component gaps and inter-node gaps with full coverage through enameled wires, identify the breakage of the enameled wires through I / O signals or resistance signals, and issue an early warning, thereby achieving comprehensive monitoring of the C-type component gaps and inter-node gaps.

Claims

1. A steel-concrete tower C-type component and inter-section gap monitoring device, wherein the steel-concrete tower is formed by splicing multiple tower sections, each tower section is spliced ​​by multiple C-type components, and the monitoring device monitors the gaps at the splicing of the C-type components and the gaps between tower sections, and is characterized by: The steel-concrete tower C-type component and inter-section gap monitoring device include: A plurality of lifting rings are evenly arranged on both sides of the splicing gap of the C-shaped component; The enameled wire is staggered through the rings on both sides of the gap in sequence, all the rings are connected in series, and the enameled wire is fixedly connected to all the rings; The collection unit is connected to both ends of the enameled wire to collect the on / off signal or resistance signal of the enameled wire.

2. The steel-concrete tower C-type assembly and inter-section gap monitoring device according to claim 1 is characterized in that: The lifting ring is 10 cm to 20 cm away from the center of the gap.

3. The steel-concrete tower C-type assembly and inter-section gap monitoring device according to claim 1 is characterized in that: The hanging ring comprises a fixed bottom plate and hanging ears arranged on the fixed bottom plate, and the fixed bottom plate is adhered and fixed to both sides of the gap; the fixed bottom plate is circular, elliptical or polygonal, and the hanging ears are semicircular or semi-elliptical.

4. The steel-concrete tower C-type assembly and inter-section gap monitoring device according to claim 1 is characterized in that: The enameled wire is wound and bonded to be fixed on the hanging ring.

5. The steel-concrete tower C-type assembly and inter-section gap monitoring device according to claim 1 is characterized in that: The acquisition unit is an I / O acquisition module or a resistance measurement module, which determines whether the enameled wire is broken by acquiring an I / O on / off signal or a resistance value signal.

6. The steel-concrete tower C-type assembly and inter-section gap monitoring device according to claim 1 is characterized in that: An early warning module is arranged in the collection unit.

7. The steel-concrete tower C-type assembly and inter-section gap monitoring device according to claim 1 is characterized in that: The length of the enameled wire between the two hanging rings is adjusted according to the size of the set gap threshold.

8. The steel-concrete tower C-type assembly and inter-section gap monitoring device according to claim 1 is characterized by: The enameled wire is connected to the collection unit via a signal line.

9. The steel-concrete tower C-type assembly and inter-section gap monitoring device according to claim 1 is characterized in that: The enameled wire is arranged in a Z shape or a V shape.

10. The steel-concrete tower C-type assembly and inter-section gap monitoring device according to claim 1, characterized in that: The lifting rings are all installed on the inner wall of the steel-concrete tower, and the collection unit is installed on the platform inside the tower.

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