KR101929919B1 - Wireless measurement system for gas turbine marriage bolts extension - Google Patents

Abstract

The present invention relates to a gas turbine rotor merge bolt elongation radio measurement system, comprising: a Bluetooth LVDT sensor for measuring the elongation of the merge bolt and for transmitting measurements wirelessly; and a Bluetooth LVDT sensor, And a computer for processing the elongation measurement data of the merge bolt received as a radio signal of the Bluetooth LVDT sensor and driving the merge bolt elongation measurement program to calculate the input data and displaying the same on a monitor. It is a technique applied to the merge bolt of gas turbine rotor, but it is an important bolt tightening work which is used in various machinery equipment or devices in the industrial field, because it can minimize the human error when measuring and extending the bolt, City wireless systems and programs There is a wide range of effects that can be applied using.

Description

TECHNICAL FIELD [0001] The present invention relates to a gas turbine rotor merge bolt,

The present invention relates to a gas turbine rotor merge bolt elongation radio measurement system, and more particularly, to a gas turbine rotor bolt elongation measurement system for minimizing human error and shortening the time required for work and time for elongating and measuring a large amount of bolts, The present invention relates to a gas turbine rotor merge bolt elongation radio measurement system which can be widely applied to a radio system and a program when an important bolt fastening operation is applied to various machinery or equipment in the industrial field.

Generally, if the elongation of the fastening bolt is not uniform in the case of rotating body like gas turbine rotor, the runout value of the rotor may exceed the reference value significantly, resulting in vibration and serious defect, so accurate bolt tightening and precise measurement work are required .

The gas turbine rotor fastening bolt has already been widely disclosed, and a detailed description thereof is omitted. Reference numeral 10-1600465 "Induction heating system for heating bolt and its control method ", Registered Patent No. 10-1575904" Bolt elongation measuring device ", Japanese Patent Application Laid-Open No. 2011-0056687, "Wireless alignment system using linear variable differential trans."

1, the turbine rotor and the compressor rotor are capable of maintaining rigid stiffness even at high-speed rotation by fastening and stretching the merge coupling 6 and the merge bolt 4, Unit rotor. For this purpose, the merge bolt (4) stretching operation is performed by measuring the initial drop value before the bolt extension, performing the bolt stretching operation step by step using the high torque wrench, measuring the elongation at each step, And the like.

As shown in FIGS. 2 and 3, the conventional method of confirming whether or not the reference value satisfies the reference value is to extend a plurality of merge bolts 4 step by step, measure one set of two surveyors 12, 14) performs a recording operation, and it takes a lot of time to fine-tune after calculating the measurement work and the residual elongation amount.

In addition, there is a problem that the measurer 12 comes in the process of delivering the measured value to the recorder 14 or frequent readjustment in the final confirmation process due to measurement error.

In addition, there is a problem in that the scorecard prepared by handwriting has to be rewritten in the corresponding measurement record form after it has been arranged in order to be attached to the maintenance report, as the elongation work goes through several stages.

[Patent Document 0001] Registered Patent No. 10-1600465 "Induction heating system for heating bolts and control method thereof" (Announcement 2016.04.11) [Patent Document 0002] Registered Patent No. 10-1575904 entitled "Device for measuring elongation of high-pressure turbine casing heating bolt" (Announcement 2013.05.27) [0003] Published Patent No. 10-2011-0056687 "Wireless alignment system using a linear variable differential transformer" (published May 31, 2011)

It is an object of the present invention to provide a system and method for a gas turbine rotor merge bolt extension that combines a wireless transmission / reception system using a Bluetooth LVDT sensor and a merge bolt wireless elongation measurement computer program to drastically break away from existing measurement and manual recording methods, Accuracy, efficiency and ease of use.

It is a further object of the present invention to provide a gas turbine rotor merge bolt elongation wireless measurement system that does not require the measurer to read measurements or record them to a recorder as in the conventional manner, From the initial measurement to the final result confirmation and the output of the measurement chart, all processes can be performed accurately and conveniently.

It is another object of the present invention to apply the present invention to a merge bolt of a gas turbine rotor, but it can be widely applied to a wireless system and a program application in an important bolt fastening work for use in a variety of machinery or equipment in other industries.

A gas turbine rotor merchandise bolt elongation radio measurement system according to the present invention comprises a Bluetooth LVDT sensor for measuring elongation of a merge bolt and transmitting measured values wirelessly, a jig having a Bluetooth LVDT sensor and fixedly mounted on a merge coupling, And a computer for processing the elongation measurement data of the merge bolt received in the radio signal of the Bluetooth LVDT sensor and driving the merge bolt elongation measurement program to calculate input data and displaying the merge bolt elongation measurement program on a monitor.

The jig includes a clamp body, a tightening bolt that penetrates through one side of the clamp body so as to be inserted and fixed into the upper groove of the merge bolt and is mounted so as to be movable up and down, And a sensor mounted on one side of the tightening bolt so as to allow the Bluetooth LVDT sensor to be installed through a clamp body in a range where the Bluetooth LVDT sensor can contact the merge bolt through a fixing protrusion protruding from the other side of the fixing bolt. Hole.

Further, the Bluetooth LVDT sensor is characterized in that the merge bolt elongation measurement program directly transmits measurement data to a computer in a driving state by radio.

Further, the computer is characterized in that the measurement data measured by the LVDT sensor can be received through a wireless transmitter connected to the LVDT sensor by wire.

In addition, the merge bolt elongation measurement program is performed by manually tightening the camber bolt with a torque wrench at a force of 150 ft-lbs after installing the merge bolt, and then the Bluetooth LVDT sensor transmits the initial drop value to a computer Is input.

In addition, the merge bolt elongation measurement program is characterized in that, in the first tightening operation, a high torque wrench is used to join 50% of the target elongation of the bolt, and then the Bluetooth LVDT sensor inputs the drop measurement value of each bolt into the measurement table .

Further, the merge bolt elongation measurement program calculates the measured value of the bolt, the actual elongation value and the residual elongation value after the first tightening operation is completed, and determines how much the tightening amount of the nut is to be set to reach the final target elongation Automatically calculating, storing the elongation result determination, the graph view, the measurement chart output, and the data file.

In addition, the merge bolt elongation measurement program may display an individual nut tightening amount calculated on a program so as to perform a tightening operation to reach a final target elongation value during a second tightening operation.

When the second tightening operation is completed, the merge bolt elongation measurement program measures the drop value of each bolt by using a measuring device, inputs the result into the program, and determines whether the satisfaction is "Accept" or "Reject" Quot; Reject "indicates a nut tightening amount calculated as an additional adjustment value so as to be within a satisfactory range in fine adjustment and measurement.

In addition, the merge bolt elongation measurement program can graphically confirm whether the elongation of all the bolts in the program is constantly extended within the allowable range when the elongation work for the individual bolts is completed, and the final result is the measurement Is automatically entered into the record table and is stored as a file and printed through the measurement record table output button.

INDUSTRIAL APPLICABILITY The gas turbine rotor merchandise bolt elongation wireless measurement system according to the present invention has the effect of minimizing human error when elongating and measuring a large amount of bolts, simplifying work and shortening the time required.

In addition, although it is applied to merge bolts of gas turbine rotors, there is an effect that it can be widely applied to the application of wireless systems and programs in an important bolt tightening work which is used in various machinery or equipment in other industries.

In addition, as in the conventional method, it is not necessary for the measurer to read the measured value and transmit it to the recorder or record it. If the user clicks the measured value inputted into the computer and clicks it, So that it can be carried out.

When the extension operation of the individual bolts is completed, it is possible to graphically check whether the extension values of all the bolts are constantly extended within the allowable range in the program. When the extension is automatically inputted to the measurement record table attached to the program, Can be easily confirmed.

In addition, it is possible to collect not only elongation amount of merge bolt but also residual length, nut tightness calculation, extension result judgment, graph view, measurement chart output, and data file storage, thereby improving work convenience, human error prevention, Thereby contributing to the improvement of the efficiency of the system.

In addition, the precision measurement technique using the merge bolt elongation wireless measurement system can be widely applied in the related industries, and has an effect of making the bolt elongation measurement technique more advanced and precise.

In addition, in the case of a rotating body such as a gas turbine rotor, if the elongation of the fastening bolt is uneven, the runout value of the rotor may exceed the reference value significantly, resulting in vibration and serious defects. .

In addition, when a large amount of merge bolts are elongated and measured, it is possible to minimize the human error, to reduce the work time and to shorten the required time.

1 shows a gas turbine rotor unit according to the prior art;
Fig. 2 is an image showing the tightening operation of the merge bolt shown in Fig. 1. Fig.
Fig. 3 is an image showing bolt elongation measurement after the tightening operation of the merge bolt shown in Fig. 2; Fig.
4 is an image showing the configuration of a gas turbine rotor merchandise bolt elongation wireless measurement system according to the present invention.
Fig. 5 is an image showing an embodiment of a gas turbine rotor merge bolt elongation radio measurement system as shown in Fig. 4; Fig.
6A is a main screen image of a merge bolt extension measuring program displayed on the computer monitor of Fig.
6B is an image showing a measurement chart information input screen appearing when a measurement chart is set on the main screen of FIG. 6A.
6C is an image showing an example screen in which data is input to the measurement table when the data measurement is clicked on the main screen of Fig. 6A. Fig.
6D is an image showing a measurement elongation graph screen displayed based on data input to the measurement table when the graph view is clicked on the main screen of Fig. 6A. Fig.
FIG. 6E is an image showing a preview screen of the measurement record table when the measurement record list is clicked on the main screen of FIG. 6A. FIG.

For a better understanding of the present invention, a preferred embodiment of the present invention will be described with reference to the accompanying drawings. The embodiments of the present invention may be modified into various forms, and the scope of the present invention should not be construed as being limited to the embodiments described in detail below. The present embodiments are provided to enable those skilled in the art to more fully understand the present invention. Therefore, the shapes and the like of the elements in the drawings can be exaggeratedly expressed to emphasize a clearer description. It should be noted that in the drawings, the same members are denoted by the same reference numerals. Further, detailed descriptions of well-known functions and configurations that may be unnecessarily obscured by the gist of the present invention are omitted.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a gas turbine rotor merge bolt elongation wireless measurement system according to the present invention will be described in detail with reference to the preferred embodiments of the present invention with reference to the accompanying drawings.

The gas turbine rotor merchandise bolt elongation radio measurement system 30 according to the present invention comprises a Bluetooth LVDT sensor (not shown) for measuring elongation of the merge bolt 4 and for transmitting measurements wirelessly, as shown in FIGS. 4-6E. A jig 32 provided with the Bluetooth LVDT sensor 34 and fixed to the merge coupling 6 and an extension of the merge bolt 4 received as a radio signal of the Bluetooth LVDT sensor 34 (50) for driving the merge bolt elongation measurement program (P) to display measured data on the monitor

The jig 32 includes a clamp body 38 and a tightening bolt 40 penetrating through one side of the clamp body 38 to be inserted and fixed in the upper groove of the merge bolt 4, A fixing protrusion T protruding from the other side of the clamp body 38 so as to be inserted into the lower groove of the merge bolt 4 in correspondence with the tightening bolt 40, And a sensor mounting hole 42 which is formed on the side surface so as to allow the Bluetooth LVDT sensor 34 to pass through the clamp body 38 within a range in which the Bluetooth LVDT sensor 34 can contact the merge bolt 4 .

In addition, the Bluetooth LVDT sensor 34 directly transmits the measurement data to the computer 50, which is in the driving state, via the merge bolt elongation measurement program P wirelessly. That is, the blue pitcher LVDT sensor 34 and the computer 50 can wirelessly connect through the wireless communication setting. Meanwhile, the computer 50 can wirelessly receive the measurement data measured by the LVDT sensor through a wireless transmitter (not shown) connected to the LVDT sensor in order to prevent the failure of the blue pitcher LVDT sensor 34.

After the merge bolt 4 is installed, the merge bolt extension measurement program P is manually tightened by a torque wrench with a force of 150 ft-lbs, and then the Bluetooth LVDT sensor 34 sets an initial drop value And inputs it to the measurement table 76 via wireless transmission to the computer 50. [

The wireless transmitter 36 is a Bluetooth adapter or the like that can be used by being connected to the USB port of the computer 50. The wireless transmitter 36 receives the signal from the blue pitcher LVDT sensor 34 and sends it to the computer 50.

The merge bolt extension measuring program P is a program for measuring the elongation of the individual bolts after the Bluetooth LVDT sensor 34 detects 50% of the target elongation of the bolts 4 by using a high torque wrench during the first tightening operation, Is input to the measurement table (76).

In addition, the merge bolt elongation measurement program (P) calculates the measured value of the bolt, the actual elongation value and the residual elongation value when the first tightening operation is completed, and calculates the tightening amount of the nut to reach the final target elongation amount Setting is automatically calculated, and the result of elongation determination, graph view, measurement chart output, and data file are stored.

When the graph view button 78 is pressed, the elongation graph 84 makes it easy to confirm the elongation displacement. When the measurement record table output button 80 is pressed, the measurement record table 82 can be previewed. If you click the Print button and print it to the printer, it becomes an output recording paper.

In addition, the merge bolt elongation measurement program P displays the calculated individual nut tightening amount in the program so as to perform a tightening operation to reach the final target elongation value during the second tightening operation.

When the secondary tightening operation is completed, the program for measuring the elongation of the merge bolt (P) is used to measure the drop value of each bolt using a measuring device and input the program into the program. The result of the determination is indicated as "Reject", and the nut tightening amount calculated as the additional adjustment value is displayed so as to be within the satisfactory range for fine adjustment and measurement.

The merge bolt elongation measurement program P can be verified by the elongation graph 84 that the elongation of all the bolts in the program is constantly extended within the allowable range when the elongation work for the individual bolts is completed, The result is automatically input to the measurement chart 82 attached to the program, stored as a file, and printed through the measurement chart output button 80, which becomes a measurement recording paper.

Hereinafter, the use of the gas turbine rotor merge bolt elongation measurement system 30 will be described with reference to the present invention as described above.

First, when a short axis icon displayed on the desktop is clicked on the computer 50 having the merge bolt extension measuring program installed, a merge bolt extension measuring program (hereinafter referred to as a program) is executed. Thus, the main screen of the merge bolt elongation amount measurement program P is displayed on the monitor of the computer 50 as shown in Fig. 6A.

When the main screen of the program is opened, when the [SETUP INITIALIZE] button is clicked on the left side of the "measurement chart information 60" frame, the set "measurement chart information 70" is initialized.

When the [Set Schedules Table Setting] button on the right side is clicked, a "Measurement Schedules Information Input 71" window is opened as shown in Fig. 6B so that information necessary for outputting the measurement schedules can be entered / corrected.

Enter the necessary information in the blank "Open the" Enter Scorecard Information (71) "window and click the [Save Settings] button to save the entered information. Accordingly, the entered Customer, Service No., and model name information are displayed in the "measurement chart information 70" frame.

Next, the reception state of the Bluetooth LVDT sensor 34 is displayed in the " Dial Gauge status information 72 "frame below the" measurement chart information 70 " That is, if the Bluetooth LVDT sensor 34 is not connected, "ERR" is displayed in red text with "Error" reduced on the main screen as shown in FIG. 6A, and "OK" is displayed when the Bluetooth LVDT sensor 34 is normally connected.

And the measurement value (displacement value) of the Bluetooth LVDT sensor 34 is displayed next to it. In the "Dial Gauge status information 72" frame, there is an [On / Off] button for selecting whether to use the "Origin setting" function. Right next to this button is the [Zero Setting] button with the "Origin setting" set to "ON". Clicking the [Zero Setting] button will set the current measured value of the Bluetooth LVDT sensor to "0".

Next, select the first measurement, the first measurement, the second measurement, and the final measurement in the "Measurement step" item in the "Data measurement (74)" frame under the "Dial Gauge status information (72) do. Then select one of 1-1 to 10-3 (30) from the 'Bolt No.' below. Also, by clicking the Bolt No. of the corresponding measurement step in the "Data measurement (74)" frame, it is automatically selected.

When you click the [Measure Data] button here, the elongation of the selected Bolt No. is measured and displayed in the "Measurement Table (76)" frame on the right.

If you click the [Initialize Data] button on the left, all measured data is initialized. You can also modify the measured data by clicking the [Manual Input (Edit)] button next to it.

If the height value of the corresponding bolt is double-clicked in the "measurement table (76)" frame, it can be corrected. Then, when you click the [Manual input (modification)] button, the input data is saved.

Further, the measurement table 76 is arranged on the right side in the main screen as shown in FIG. 6C. In the item "measurement table (76)", the minimum, maximum, average, and rotation angle (G) information of each bolt (Normal, Body Bound) are displayed.

The modified information will be saved when you modify the minimum, maximum, average, and rotation angle (G) information and click the [Update Data] button. When you open a new file or click the [Default Data] button, each information is changed to the default value.

It is also possible to change the bolt type. If the position of the Body Bound Bolt is changed, double-click the number of the Body Bound Bolt that is already set and release it (Normal Bolt). Then, double-click the bolt number at the changed position to set the body bound bolt. The bolts set by the body-bound bolts are indicated by " Bolt No. [BB] ".

You can also display bolt-specific measurements. The initial drop value is displayed when the initial drop value is measured after tightening the twelve studs to 150 ft-lbs with a torque wrench.

Next, the display of the first measured value (Actual Drop Value after 1st Stretching) is input when the Drop value is measured after extending to 50% of the target elongation value by the first elongation work.

The above-mentioned 1st Actual Extension Value is automatically calculated in the program by the expression of (3) 1st elongation value = (2) first measured value - (1) first measured value.

In addition, the target extension value is automatically calculated in the program as the average value of the final elongation reference value of 0.013 inches (3) first elongation value.

Also, the target turning gear (target turning gear) is automatically calculated in the program as '④ second target height value / 0.0011'. (0.0011 = elongation or relaxation value per angle (G) of the twist nut of the high torque wrench)

In addition, the 2nd measurement value (2nd Drop Value) is measured after the twelve nut is tightened according to the 2nd target rotation angle.

In addition, the final extension value is automatically calculated from the program in the form of "⑥ secondary measurement value - ① initial measurement value".

In addition, the target adjustment value is automatically calculated in the program as a value of 0.013 inch, which is a median value of the final target elongation value, and 22 elongation value.

In addition, the additional target rotation angle (Taregt Adjusting Gear) is automatically calculated in the program as '⑧ additional adjustment value / 0.0011'.

In addition, the final measured value (Final Drop Value) is obtained by loosening the hexagonal stud of the elongation machine according to the additional target rotation angle (G), and then measuring the Drop value.

In addition, the final extension value is automatically calculated in the program by the expression '⑩ final measured value - ① initial measured value'.

Results should therefore be displayed as "Accept" if the final elongation is within the acceptable range (Normal: 0.012 / 0.014 in., BB: 0.010 / 0.012 in.) And "Reject" 76) "is displayed on the rightmost side of the frame.

When the measured value and the elongation value are obtained as described above, the program displays the "elongation graph 84" frame shown in Fig. 6D.

The elongation graph 84 may be visually represented using a graph to see if the individual extensions of the bolts are within the limits of the maximum and minimum allowable reference values.

Also, when the [Measurement Record List Output] button 80 on the left bottom of the main screen is clicked, the program can preview the measurement record table 82 of the corresponding measurement item as shown in FIG. 6E. At this time, if you click the [Print] button, the measurement chart (total 2 pages) will be able to see the measurement report printed on the selected printer. Clicking [ESC] on the keyboard will end the preview and allow you to complete the use of the gas turbine rotor merge bolt measurement system.

The embodiments of the gas turbine rotor merge bolt elongation electroscopic measurement system of the present invention described above are merely illustrative, and those skilled in the art will appreciate that various modifications and equivalent embodiments can be made without departing from the scope of the present invention. You can see that it is possible. Therefore, it is to be understood that the present invention is not limited to the above-described embodiments. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims. It is also to be understood that the invention includes all modifications, equivalents, and alternatives falling within the spirit and scope of the invention as defined by the appended claims.

4: merge bolt 6: merge coupling
30: Gas turbine rotor merge bolt elongation radio measurement system
32: Jig 34: Bluetooth LVDT sensor
36: Radio transmitter 38: Clamp body
40: fastening bolt 42: sensor mounting hole
50: computer 70: measurement chart information
72: Dial gauge status information 74: Data information
76: Measurement table 78: Graph view button

Claims (9)

A Bluetooth LVDT sensor measuring the elongation of the merge bolt and directly transmitting the measurement data wirelessly to a computer in which the merge bolt elongation measurement program is in operation;
A fixing bolt fixed to the merge coupling and having the Bluetooth LVDT sensor, a clamping body, a tightening bolt penetrating through the one side of the clamp body so as to be inserted and fixed into the upper groove of the merge bolt, A fixing protrusion formed on the other side of the clamp body so as to be inserted into the groove and corresponding to the tightening bolt, and a clamping bolt, which penetrates a clamping body within a range in which the Bluetooth LVDT sensor can contact the merge bolt, A jig including a sensor mounting hole formed so as to mount a sensor;
And a computer for processing the elongation measurement data of the merge bolt received as a radio signal of the Bluetooth LVDT sensor and driving the merge bolt elongation measurement program to calculate the input data and display the result on a monitor. The gas turbine rotor merge bolt elongation radio measurement system In this case,
The merge bolt elongation measurement program may include:
When the first tightening operation is completed, the measured value of the bolt, the actual elongation value and the residual elongation value are calculated, and the amount of the nut tightening amount is automatically calculated to reach the final target elongation. View, a scorecard output, and a data file. ≪ Desc / Clms Page number 24 >
delete delete delete delete delete The method according to claim 1,
The merge bolt elongation measurement program may include:
Wherein the program displays an individual nut tightening amount calculated on the program so as to perform a tightening operation to reach a final target elongation value during the second tightening operation.
The method according to claim 1,
The merge bolt elongation measurement program may include:
When the secondary tightening operation is completed, measure the drop value of each bolt using the measuring device and input it into the program. If the result is "Accept" or "Reject", the result is judged as "Reject" And a nut tightening amount calculated as an additional adjustment value so as to be within a satisfactory range when adjusting and measuring the nut tightening amount.
delete

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