CN218911395U

CN218911395U - Wind power plant anchor bolt prestress monitoring arrangement structure

Info

Publication number: CN218911395U
Application number: CN202223180030.4U
Authority: CN
Inventors: 姜亮亮; 李昂; 胡公胜; 张铭; 陈艳军; 郑志龙
Original assignee: Hancheng Technology Co ltd
Current assignee: Hancheng Technology Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-04-25
Anticipated expiration: 2032-11-29

Abstract

The utility model relates to the technical field of wind power generation, and particularly discloses a wind power plant anchor bolt prestress monitoring arrangement structure which comprises a lower anchor plate, an upper anchor plate, gaskets and a plurality of anchor rod assemblies, wherein each anchor rod assembly penetrates through the lower anchor plate, the upper anchor plate and the gaskets respectively, and the gaskets are arranged above the upper anchor plate. Through the arrangement of the structure, the original annual stretching data of the wind field can not be influenced, the sensor is installed to be suitable for referencing the stretching technical requirement of the early stretching unit, the accurate measuring ruler is adopted to take out the stretching amount reading, and the stretching amount of the high-strength anchor rod can be conveniently measured after the stretching is finished.

Description

Wind power plant anchor bolt prestress monitoring arrangement structure

Technical Field

The utility model relates to the technical field of wind power generation, in particular to a wind farm anchor bolt prestress monitoring arrangement structure.

Background

At present, when the wind turbine is installed, a wind farm anchor bolt is required to be installed firstly and used for fixing the wind turbine, most of the wind farm anchor bolt is buried under the ground, and only the connecting part is exposed and used for connecting the wind turbine.

However, in the prior art, in order to ensure the stability of the wind turbine, the stress detection is performed on the wind farm anchor bolts in the prior art, but the existing detection technology and detection mode are not beneficial to monitoring and analyzing the prestress of the installed Hami wind farm fan foundation anchor bolts.

Disclosure of Invention

The utility model aims to provide a wind farm anchor bolt prestress monitoring arrangement structure, and aims to solve the technical problem that an inspection technology and a detection mode in the prior art are not beneficial to monitoring and analyzing the installed Hami wind farm fan foundation anchor bolt prestress.

In order to achieve the above purpose, the wind farm anchor bolt prestress monitoring arrangement structure comprises a lower anchor plate, an upper anchor plate, gaskets and anchor rod assemblies, wherein the number of the anchor rod assemblies is multiple, each anchor rod assembly penetrates through the lower anchor plate, the upper anchor plate and the gaskets, and the gaskets are arranged above the upper anchor plate.

Each anchor rod assembly comprises an anchor rod, a nut gasket and a sensor, wherein the anchor rod sequentially penetrates through the gasket, the upper anchor plate and the lower anchor plate, the nut gasket is sleeved on the outer surface wall of the anchor rod, the nut is in threaded connection with the anchor rod and sleeved on the outer wrapping portion of the anchor rod, and the sensor is arranged on one side of the nut gasket.

Each anchor rod assembly further comprises a protective cap, wherein the protective caps are arranged above the gaskets, and the protective caps are matched with the anchor rods.

The wind farm anchor bolt prestress monitoring arrangement structure has the beneficial effects that: the sensor can be installed without affecting the original annual tensioning data of the wind field, the sensor can be used for referencing the tensioning technical requirement of the early tensioning unit, and the accurate measuring scale is used for taking the elongation reading, so that the elongation of the high-strength anchor rod can be conveniently measured after the tensioning is finished.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic structural view of a wind farm anchor pre-stress monitoring arrangement of the present utility model.

FIG. 2 is a schematic partial structural view of a wind farm anchor pre-stress monitoring arrangement of the present utility model.

FIG. 3 is a partial structural top view of the wind farm anchor pre-stress monitoring arrangement of the present utility model.

FIG. 4 is a schematic view of a sensor mounting structure of the wind farm anchor pre-stress monitoring arrangement of the present utility model.

1-lower anchor plate, 2-upper anchor plate, 3-gasket, 4-stock, 5-nut, 6-nut gasket, 7-sensor, 8-protective cap.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

Referring to fig. 1 to 4, the utility model provides a wind farm anchor bolt prestress monitoring arrangement structure, which comprises a lower anchor plate 1, an upper anchor plate 2, gaskets 3 and anchor rod 4 assemblies, wherein the number of the anchor rod 4 assemblies is multiple, each anchor rod 4 assembly respectively penetrates through the lower anchor plate 1, the upper anchor plate 2 and the gaskets 3, and the gaskets 3 are arranged above the upper anchor plate 2.

Further, each anchor rod 4 assembly comprises an anchor rod 4, a nut 5, a nut gasket 63 and a sensor 7, wherein the anchor rod 4 sequentially penetrates through the gasket 3, the upper anchor plate 2 and the lower anchor plate 1, the nut gasket 63 is sleeved on the outer surface wall of the anchor rod 4, the nut 5 is in threaded connection with the anchor rod 4 and sleeved on the outer wrapping portion of the anchor rod 4, and the sensor 7 is arranged on one side of the nut gasket 63.

Further, each anchor rod 4 assembly further comprises a protective cap 8, the protective cap 8 is arranged above the gasket 3, and the protective cap 8 covers the anchor rod 4.

In the utility model, the sensor 7 is firstly installed, and the nut 5 on which the sensor 7 is required to be installed is detached by using the tension of a conventional anchor bolt;

the nut gasket 63 is sleeved into the anchor rod 4 according to the requirement, the pressure sensor 7 and the nut gasket 63 are put in, the nut 5 is sleeved, the anchor rod 4 is tensioned by using a professional tensioning sleeve, the anchor rod maintenance tensioning force value of 700kN+10kN is determined, and the anchor rod maintenance tensioning force value is carried out according to the design description;

setting up 2 groups of stretching devices to symmetrically detach high-strength screws in 2 directions at the same time, and respectively marking the number of the sensor 7 according to the sensor 7 and stretching;

before the anchor rod 4 is stretched, the rust spots of the anchor rod 4 are removed by using rust removing products because whether foreign matters exist at the anchor rod 4 or not is carefully checked;

after the tensioner is placed on the high-strength anchor rod 4 and fixed by the nut 5, the equipment is stable under pressure, 100% force is applied to tension, the nut 5 is locked when the test value is reached, and the anchor rod 4 is stretched according to the specified moment to prevent the occurrence of moment deficiency and over-tension;

the tensioning equipment is dismantled, and the tensioning of the next group of the sensors 7 according to the high strength anchor rods 4 is sequentially carried out until all eight groups of the anchor rods 4 of the tower barrel are installed and the tensioning is completed;

because the simultaneous stretching of the anchor rods 4 inside and outside the tower is not easy to carry out due to the limitation of the shape of the tower, the stretching is carried out in a sequence of firstly outer cylinder and then inner cylinder in principle;

in order to prevent the phenomenon of over-pulling in the tensioning process, one person is specially responsible for observing the tensioning force value, and when the pressure value reaches a specified value, the hydraulic station pressing switch is rapidly closed to avoid exceeding the specified tensioning force value;

after the pulling work of all the anchor rods 4 is completed, the anti-corrosion oil is smeared, and each anchor rod 4 is confirmed to be smeared with the anti-corrosion oil, the protective cap 8 is timely covered, and the damaged and missing protective cap 8 is timely supplemented and replaced;

in order to avoid influencing the original annual regular tensioning data of the wind field, the installation of the sensor 7 is suitable for referencing the tensioning technical requirement of the early tensioning unit, taking the elongation reading by adopting a precision measuring ruler, monitoring the elongation of the high-strength anchor rod 4, and recording data, wherein the comparison reference for the early tensioning data is to check the influence of the thickness of the sensor 7 on the elongation.

The above disclosure is only a preferred embodiment of the present utility model, and it should be understood that the scope of the utility model is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present utility model.

Claims

1. A wind farm anchor bolt prestress monitoring arrangement structure is characterized in that,

the anchor rod assembly comprises a lower anchor plate, an upper anchor plate, gaskets and anchor rod assemblies, wherein the number of the anchor rod assemblies is multiple, each anchor rod assembly penetrates through the lower anchor plate, the upper anchor plate and the gaskets respectively, and the gaskets are arranged above the upper anchor plate.

2. The wind farm anchor pre-stress monitoring arrangement of claim 1, wherein,

every stock subassembly includes stock, nut gasket and sensor, the stock runs through in proper order the gasket go up anchor plate with anchor plate down, nut gasket cover is located the exterior wall of stock, the nut with stock threaded connection, and the cover is located the outsourcing portion of stock, the sensor set up in one side of nut gasket.

3. The wind farm anchor pre-stress monitoring arrangement of claim 2, wherein,

each anchor rod assembly further comprises a protective cap, the protective cap is arranged above the gasket, and the protective cap is closed with the anchor rod.