WO2023146005A1

WO2023146005A1 - Smart bolt tensioner system

Info

Publication number: WO2023146005A1
Application number: PCT/KR2022/001570
Authority: WO
Inventors: 조영욱; 이정길; 유호운; 유창석
Original assignee: (주)한국에너텍
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2023-08-03

Abstract

One embodiment of the present invention provides a smart bolt tensioner system comprising: a bolt tensioner for tightening a bolt coupled to an object; a pressure application unit for providing force for moving, in an axial direction, the bolt coupled to the bolt tensioner; an integrated control unit for controlling the operation of the bolt tensioner by adjusting the pressure application unit so as to tighten, at the required pressure application state, the bolt coupled to the object; and a server unit which is communicatively connected to the integrated control unit and provides pre-stored data information to the integrated control unit, wherein the integrated control unit is provided with information on the operation state of the bolt tensioner and controls the operation of the pressure application unit.

Description

Smart Bolt Tensioner System

The present invention relates to a smart bolt tensioner system, and more particularly, to a smart bolt tensioner system configured to accurately press a bolt fastened to an object with a required load.

A bolt tensioner is a device for fastening bolts by pulling them in an axial direction so that they do not come loose.

These bolt tensioners are used to precisely tighten bolts used for assembling parts of, for example, offshore wind power plants, chemical oil refineries, shipbuilding, offshore plants, power plants, land plants, and the like.

Bolts fastened to each object are becoming larger in size in accordance with the high-strength requirements. As such, when the size of the bolt increases, the load applied to the bolt also increases, so it is important to accurately control the load applied to the bolt. In other words, precise fastening of bolts is very important because the precise fastening of bolts according to the required load has a great influence on safety and performance.

In fastening a bolt with a required load using such a bolt tensioner, conventionally, an operator calculates a pressing force to be supplied to the bolt tensioner through a work table in which a relationship between load and pressure is described. In addition, the gauge bar provided in the pressing unit was directly checked according to the calculated pressing force, and the pressing unit was adjusted to the required pressing force.

However, in this case, there is a problem in that the pressurized load applied to the bolt varies depending on the skill level of the operator. In addition, there is a problem in that the bolt fastened to the object using the bolt tensioner is not precise with the required load.

Accordingly, various researches and developments have been conducted on a bolt tensioner system configured to precisely fasten a bolt fastened to an object with a required load regardless of the skill level of the operator.

The technical problem of the present invention for solving the above problems is to provide a smart bolt tensioner system made to accurately press a bolt fastened to an object with a required load.

In order to achieve the above technical problem, one embodiment of the present invention is a bolt tensioner for tightening the bolt coupled to the object; a pressing unit providing force for moving the bolt coupled to the bolt tensioner in an axial direction; An integrated control unit for controlling the operation of the bolt tensioner through the adjustment of the pressing unit to tighten the bolt coupled to the object in a required pressurized state; And a server unit that is communicatively connected to the integrated control unit and provides pre-stored data information to the integrated control unit, wherein the integrated control unit receives operating state information of the bolt tensioner and controls the operation of the pressing unit. Provides a smart bolt tensioner system.

In one embodiment of the present invention, the integrated control unit, information input unit for inputting the type of the bolt tensioner used in the work and the required load value; a data storage unit storing information data of the bolt tensioner and correlation data between load and pressure; an operation control unit controlling an operation of the pressing unit based on information input to the information input unit; and a measurement sensor unit for measuring an operating state of the bolt tensioner that is pressurized according to the operation of the pressing unit.

In one embodiment of the present invention, the information input unit is made of a touch display unit, and the information input unit is made to input a target load, the type of the bolt tensioner used in the work, bolt information fastened to the object, and step-by-step pressurization information can

In one embodiment of the present invention, the display unit may be configured to display information about the pressure applied to the bolt tensioner in real time.

In one embodiment of the present invention, the integrated control unit is made to further include a communication unit configured to be able to communicate with the outside, and the operator can be made to remotely control the operation of the integrated control unit through a worker terminal.

In one embodiment of the present invention, the integrated control unit may provide monitoring information on the operation of the bolt tensioner to the operator's terminal.

In one embodiment of the present invention, the bolt tensioner, the puller is formed with a female thread fastened to the bolt on the inside; a rod piston which slides the puller in an axial direction using force provided from the pressing part; a casing having an insertion space into which a lower portion of the rod piston is inserted and guiding movement of the rod piston; and a nut socket provided at a lower portion of the casing and tightening the nut spaced apart from the surface of the object by the puller moved in the axial direction so as to be in close contact with the surface of the object.

The effects of the smart bolt tensioner system according to the present invention described above are described as follows.

According to the present invention, in pressurizing the bolt with the required bolt load, the operator inputs the required target load, bolt tensioner information, and step-by-step pressing information into the information input unit, and the bolt is automatically pressed, so the work process is simple. do.

In addition, since the operator does not have to directly control the pressing part, it is possible to prevent the work result from being different depending on the operator. That is, any worker can perform the same and precise work.

The effects of the present invention are not limited to the above effects, and should be understood to include all effects that can be inferred from the detailed description of the present invention or the configuration of the invention described in the claims.

1 is a schematic illustration of a smart bolt tensioner system according to an embodiment of the present invention.

2 is a configuration diagram of an integrated control unit according to an embodiment of the present invention.

3 is an exemplary view showing a data table stored in a data storage unit according to an embodiment of the present invention by way of example.

4 is a perspective view of a bolt tensioner according to an embodiment of the present invention.

5 is a cross-sectional view of a bolt tensioner according to an embodiment of the present invention.

6 is an exemplary diagram showing an operating state of a smart bolt tensioner system according to another embodiment of the present invention.

Hereinafter, the present invention will be described with reference to the accompanying drawings. However, the present invention may be embodied in many different forms and, therefore, is not limited to the embodiments described herein. And in order to clearly explain the present invention in the drawings, parts irrelevant to the description are omitted, and similar reference numerals are attached to similar parts throughout the specification.

Throughout the specification, when a part is said to be "connected" to another part, this includes not only the case where it is "directly connected" but also the case where it is "indirectly connected" with another member interposed therebetween. . In addition, when a part "includes" a certain component, it means that it may further include other components without excluding other components unless otherwise stated.

In the present invention, the upper and lower parts mean that they are located above or below the object member, and do not necessarily mean that they are located above or below the gravitational direction.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a schematic illustration of a smart bolt tensioner system according to an embodiment of the present invention, FIG. 2 is a configuration diagram of an integrated control unit according to an embodiment of the present invention, and FIG. 4 is a perspective view of a bolt tensioner according to an embodiment of the present invention, and FIG. 5 is a cross-sectional view of a bolt tensioner according to an embodiment of the present invention. am.

As shown in FIGS. 1 to 5 , the smart bolt tensioner system 1000 may include a bolt tensioner 100, a pressing unit 200, an integrated control unit 300, and a server unit 400.

This bolt tensioner 100 is made to tighten the bolt 1 coupled to the object. Here, the object may be various parts provided in an offshore wind power plant, a chemical oil refinery, a shipbuilding, an offshore plant, a power plant, and an onshore plant.

Such a bolt tensioner 100 may include a casing 110, a rod piston 120, a puller 130, and a nut socket 140.

Here, the casing 110 forms the outer shape of the bolt tensioner 100.

The casing 110 may include a first connection part 111 into which the pressing force provided from the pressing part 200 flows and a second connection part 112 through which the pressing force is discharged. Here, the pressing force provided in the form of hydraulic pressure from the pressing unit 200 will be described as an example.

The smart bolt tensioner system 1000 is made so that a plurality of bolt tensioners 100 form a single module to tighten a plurality of bolts 1 at the same time. In other words, the hydraulic oil supplied from the pressing part 200 to the first connection part 111 of any one bolt tensioner 100 passes through the second connection part 112 to the first connection part of the neighboring bolt tensioner 100 ( 111) is made to be supplied. That is, the plurality of bolt tensioners 100 are configured to simultaneously tighten the plurality of bolts 1 with the same pressing force through the hydraulic pipes 150 respectively coupled to the first connection part 111 and the second connection part 112.

In this way, the hydraulic oil provided from the pressing part 200 is supplied to the insertion space 101 between the casing 110 and the rod piston 120 so that the load required for the bolt 1 can be applied to the rod piston ( 120) is moved in the axial direction of the bolt (1).

The rod piston 120 moving in the axial direction of the bolt 1 moves the puller 130 coupled with the bolt 1. Here, a female thread for fastening with the bolt 1 is formed on the inner surface of the puller 130, so that the bolt 1 can be screwed to the puller 130.

In this way, in the course of moving the puller 130 in the axial direction of the bolt 1 by the movement of the rod piston 120, the nut 2 supporting and fixing the object is separated from the surface of the object. That is, in the process of the puller 130 pulling the bolt 1 with more than a certain force, for example, the binding force between the objects (flanges) is further increased, so that the nut 2, which was supporting and fixing the existing object, is separated from the surface of the object. can

In this state, through the rotation of the nut socket 140 supporting and fixing the nut 2 provided at the lower part of the casing 110, the nut 2 spaced from the object can be tightened so that it is in close contact with the surface of the object. In this way, the bolt tensioner 100 is made to fasten the object with the same load required for a plurality of bolts (1) for fixing the object.

Meanwhile, the pressing part 200 is connected to the bolt tensioner 100. As described above, the pressing unit 200 is made to provide a pressing force for fastening an object with a load required by the bolt 1.

Here, the pressing unit 200 may provide pressing force to the bolt tensioner 100 in various forms such as pneumatic pressure and hydraulic pressure. The pressing force provided from the pressing unit 200 is not necessarily limited to only pneumatic and hydraulic pressure, and any form can be used as long as the effective pressure control of the rod piston 120 is possible.

The pressing unit 200 may be controlled by the integrated control unit 300 .

Meanwhile, the integrated control unit 300 may include an information input unit 310, a data storage unit 320, an operation control unit 330, and a measurement sensor unit 340.

The integrated control unit 300 is connected to the pressing unit 200 and the bolt tensioner 100 to control the operation of the pressing unit 200 and the bolt tensioner 100 as well as to monitor the operating state. That is, the integrated control unit 300 may selectively control the operation of the pressing unit 200 while receiving operation state information of the bolt tensioner 100 in real time.

An information input unit 310 is provided in such an integrated control unit 300, and a worker can input various information through the information input unit 310.

The information input unit 310 is formed of, for example, a touch-type display unit (not shown) so that the operator can easily input various information for pressing the bolt 1.

Here, the information input to the information input unit 310 may include target load, bolt tensioner information, and step-by-step pressing information. At this time, the target load may be a required load value applied to the object.

Also, the information on the bolt tensioner 100 input to the information input unit 310 may be information on the bolt tensioner 100 being used in the current work. That is, since there are various types of bolt tensioners 100 and various values such as the amount of hydraulic pressure provided from the pressing unit 200 may vary depending on the type of bolt tensioners 100, information on the bolt tensioners 100 used input is required

In addition, information about the bolt 1 that is fastened to the object and pressurized is input to the information input unit 310 . Through the input of information on the bolt 1, the integrated control unit 300 performs the work while considering the tensile force of the bolt 1 in the process of tightening the bolt 1.

Then, step-by-step pressing information is input to the information input unit 310 . That is, when the bolt tensioner 100 presses the bolt 1, the bolt 1 may be pressed to satisfy the load required by one hydraulic supply, but the load applied to the bolt 1 is increased step by step It is also possible to press the bolt 1 to satisfy the required load. In this way, the stepwise operation in pressing the bolt 1 is to work in consideration of the elongation rate of the bolt 1, and if the work is performed in a state where the elongation rate of the bolt 1 is not considered, the bolt 1 ) may break.

For example, step-by-step pressing may be performed in the form of 0%, 30%, 60%, and 100%, or stepwise pressing may be performed in the form of 0%, 50%, and 100%. It can be done.

In addition, various information such as various information about the type of bolt tensioner 100 and data about the correlation between load and pressure applied to the bolt 1 may be stored in the data storage unit 320 . For example, as shown in FIG. 3 , correlation information between pressure and load for each type of bolt tensioner 100 may be stored in the data storage unit 320 . Various data information stored in the data storage unit 320 is not information directly input by an operator, but is pre-stored data information.

Also, the operation control unit 330 selectively controls the operation of the pressing unit 200 based on information input to the information input unit 310 . In other words, the operation control unit 330 precisely operates the bolt tensioner 100 according to the load required by the operator through matching of information input through the information input unit 310 and information stored in the data storage unit 320. will control

In addition, the measurement sensor unit 340 monitors in real time the operating state of the bolt tensioner 100 that is pressurized according to the operation of the pressing unit 200, and provides the corresponding information to the operation control unit 330. Here, the operation control unit 330 may more precisely control the operation of the pressing unit 200 through information provided from the measurement sensor unit 340 .

In this way, the pressure information applied to the bolt tensioner 100 is displayed on the display unit provided in the information input unit 310 in real time, so that the operator can monitor the current work state in real time through the display unit.

Meanwhile, the server unit 400 is configured to communicate with the communication unit 350 provided in the integrated control unit 300. Accordingly, the integrated control unit 300 may be provided with various data information pre-stored in the server unit 400 . For example, data of the data storage unit 320 provided in the integrated control unit 300 may also be provided from the server unit 400 . As such, various big data related to the bolt tensioner 100 are stored in the server unit 400 .

In addition, the server unit 400 may receive various information provided from the integrated control unit 300 . Accordingly, the server unit 400 may diagnose a failure of the corresponding bolt tensioner 100 based on data provided from the integrated control unit 300 or may predict the life of the corresponding equipment. Accordingly, maintenance of the bolt tensioner 100 can be performed more effectively.

The server unit 400 is configured to be able to communicate with the operator terminal 500, so that the operator can easily diagnose the failure of the corresponding bolt tensioner 100 and the life status of the equipment through the operator terminal 500.

And the communication unit 350 is made to be able to communicate with the worker terminal 500 . Accordingly, the operator may be provided with information on the operating state of the bolt tensioner 100 in real time even remotely through the communication unit 350 .

Here, the worker terminal 500 configured to be able to communicate with the communication unit 350 may be, for example, any device provided with an input device capable of inputting text and an output device capable of displaying on a screen.

Such a worker terminal 500 is, for example, a mobile phone, a smart phone, a personal digital assistant (PDA), a portable multimedia player (PMP), and a wireless communication device based on all types of handhelds equipped with a touch screen panel, such as a tablet PC. It may be a desktop PC, a tablet PC, a laptop PC, and an IPTV including a set-top box, and may be a device in which a basis for installing and executing an application is prepared.

Such a worker terminal 500 is made accessible only to the worker terminal 500 in which a dedicated program capable of accessing the communication unit 350 is installed.

In addition, when accessing the communication unit 350 using the worker terminal 500, only a worker who has been assigned a unique ID and password PW specified in advance is allowed to access the communication unit 350. This is for security in terms of use and management of the smart bolt tensioner system 1000.

The communication unit 350 including the worker terminal 500 is configured to transmit and receive data through an Internet protocol using various wired and wireless communication technologies such as an Internet network, an intranet network, a mobile communication network, and a satellite communication network.

Here, the communication network includes not only closed networks such as LAN (Local Area Network) and WAN (Wide Area Network) and open networks such as the Internet, but also CDMA (Code Division Multiple Access), WCDMA (Wideband Code Division Multiple Access), It may be a concept collectively referring to networks such as Global System for Mobile Communications (GSM), Long Term Evolution (LTE), Evolved Packet Core (EPC), and next-generation networks and computing networks to be implemented in the future.

In this way, the operator can remotely monitor the working state of the bolt tensioner 100 through the operator terminal 500 . Accordingly, when an abnormal pressure supply situation or the like occurs, it can be quickly dealt with. In this case, the operator can conveniently control the operation of the integrated control unit 300 remotely.

6 is an exemplary view showing an operating state of a smart bolt tensioner system according to another embodiment of the present invention, components referred to by the same reference numerals as those shown in FIGS. 1 to 5 have the same functions, A detailed description of each of them will be omitted.

In Figure 6, for example, when four bolt tensioners 100 form one module and the number of bolts fastened to the object is eight, the work in case the tensioning operation cannot be performed on the eight bolts 1 at the same time I would like to explain the process.

In this case, one-step pressing is performed on the four bolts 1 first. At this time, the four bolts (1) to be pressed may be bolts (1) forming a predetermined interval. This is to prevent distortion or non-uniformity of pressing in the process of pressing the bolt 1.

The nut 2 provided on the bolt 1 subjected to one-step pressing is spaced apart from the object, and the spaced nut 2 may be closely coupled to the object through the nut socket 140.

Next, one-step pressing is performed on the remaining bolts 1 that have not been subjected to first-step pressing, and after pressing, the nuts 2 provided on the corresponding bolts 1 are tightened.

As described above, after the first step pressing is completed for all the bolts 1, the operator may touch the second step pressing progress through the display unit to proceed with the second step pressing. Here, when the step of pressurizing the bolts 1 is performed in a three-step method, as described above, after completing the two-step pressing for all bolts 1, the operator proceeds with the last three-step pressing through the display unit. By touching, you can proceed with the 3-step pressurization.

However, this is only a preferred embodiment of the present invention, and the scope of the present invention is not limited by the description scope of these embodiments.

The above description of the present invention is for illustrative purposes, and those skilled in the art can understand that it can be easily modified into other specific forms without changing the technical spirit or essential features of the present invention. will be. Therefore, the embodiments described above should be understood as illustrative in all respects and not limiting. For example, each component described as a single type may be implemented in a distributed manner, and similarly, components described as distributed may be implemented in a combined form.

The scope of the present invention is indicated by the following claims, and all changes or modifications derived from the meaning and scope of the claims and equivalent concepts should be interpreted as being included in the scope of the present invention.

Claims

Bolt tensioner for tightening the bolt coupled to the object;

a pressing unit providing force for moving the bolt coupled to the bolt tensioner in an axial direction;

An integrated control unit for controlling the operation of the bolt tensioner through the adjustment of the pressing unit to tighten the bolt coupled to the object in a required pressurized state; and

A server unit that is communicatively connected to the integrated control unit and provides pre-stored data information to the integrated control unit;

The integrated control unit receives information on the operating state of the bolt tensioner and controls the operation of the pressing unit.
According to claim 1,

The integrated control unit,

an information input unit for inputting a type of the bolt tensioner used for work and a required load value;

a data storage unit storing information data of the bolt tensioner and correlation data between load and pressure;

an operation control unit controlling an operation of the pressing unit based on information input to the information input unit; and

A smart bolt tensioner system comprising a measurement sensor unit for measuring an operating state of the bolt tensioner that is pressurized according to the operation of the pressing unit.
According to claim 2,

The information input unit is made of a touch display unit,

The smart bolt tensioner system, characterized in that configured to input the target load, the type of bolt tensioner used in the work, bolt information fastened to the object, and step-by-step pressing information in the information input unit.
According to claim 3,

The smart bolt tensioner system, characterized in that the display unit is configured to display the pressure information applied to the bolt tensioner in real time.
According to claim 1,

The integrated control unit is made to further include a communication unit configured to communicate with the outside,

The smart bolt tensioner system, characterized in that the operator is made to remotely control the operation of the integrated control unit through the operator terminal.
According to claim 5,

The integrated control unit is a smart bolt tensioner system, characterized in that configured to provide monitoring information on the operation of the bolt tensioner to the operator's terminal.
According to claim 1,

The bolt tensioner,

A puller having a female screw thread fastened to the inside of the bolt;

a rod piston which slides the puller in an axial direction through force provided from the pressing part;

a casing having an insertion space into which a lower portion of the rod piston is inserted and guiding movement of the rod piston; and

A smart bolt tensioner system, characterized in that it comprises a nut socket provided at the lower part of the casing and tightening the nut spaced apart from the surface of the object by the puller moved in the axial direction so that it is in close contact with the surface of the object.