JP5512459B2 - Method for identifying position of thin tube of heat exchanger and position identifying apparatus thereof - Google Patents

Description

TECHNICAL FIELD The present invention relates to a heat exchanger thin tube position identification method and a position identification device for identifying the positions of a large number of thin tubes to be mounted on a tube plate of a heat exchanger and performing various individual processes.

In the manufacture of a multi-tube heat exchanger in which a large number of thin tubes are joined to the tube plate of the heat exchanger, each thin tube is joined (expanded) to the tube plate. Therefore, when joining thin tubes and tube sheets, tube expansion data is input every time tube expansion processing is completed, and combined with the tube arrangement data obtained in advance, and the tubes and tubes that have been expanded. An apparatus has been proposed that makes it easy to distinguish between unprocessed capillaries and prevents the occurrence of capillaries that have not expanded (see, for example, Patent Document 1).

JP 2003-340534 A

However, the number of thin tubes to be joined to the tube plate is large (in some cases it may be several thousand), and since the thin tubes are expanded one by one, the distinction between the expanded tube and the untreated tube is unclear. Probability is high. Therefore, it is difficult to guarantee that the narrow tube expansion processing has been performed without any problem, and there is a problem from the viewpoint of reliability of bonding. Furthermore, during the work of expanding the narrow tube, it is necessary to perform another operation such as inputting expansion completion data and checking whether or not the tube has been expanded, which makes the work complicated. There also arises a problem that the work efficiency of the pipe expansion process is lowered.
The above-described problem occurs not only in the tube expansion process, but also in, for example, the cleaning process of the capillary tube before the inspection or the marking process of the capillary tube determined to be abnormal by the inspection.

The present invention has been made in view of such circumstances, and provides a position identification method and a position identification apparatus for a thin tube of a heat exchanger that can efficiently and reliably identify the position of a thin tube for performing various individual processes. With the goal.

The method for identifying the position of the thin tubes of the heat exchanger according to the first invention in accordance with the first object is as follows:
Create a tube chart showing the arrangement of the tubes A provided on the tube plate, and specify the position of each tube B in each tube B described in the tube diagram corresponding to each tube A A first step of assigning each identification code to be
A second step of installing an identification piece on which the identification code is written in the vicinity of each capillary A corresponding to each capillary B;
When each individual tube A is subjected to tube expansion processing, cleaning processing, or individual tube processing consisting of marking processing of a tube that has been determined to be abnormal by inspection, a reading provided in a jig for performing the tube individual processing is performed. A third step of reading the identification piece corresponding to the thin tube A to be subjected to the individual processing of the thin tube by a machine;
When the position of the narrow tube A to be subjected to the individual tube processing matches the position of the narrow tube B in the tube chart corresponding to the narrow tube A, the individual tube processing is started. And a fourth step of stopping the individual capillary tube processing.

A position identification device for a thin tube of a heat exchanger according to a second invention that meets the above-mentioned object is a position identification device for a plurality of thin tubes A to be mounted on a tube plate of a heat exchanger.
A nest diagram creating means for creating a nest diagram showing the arrangement of the narrow tubes A provided on the tube sheet;
An identification code for specifying the position of each capillary B described in the tube chart is described, and an identification piece producing means for producing an identification piece installed in the vicinity of each capillary A corresponding to each capillary B,
For each of the capillaries A, when performing the capillaries individual processing consisting of tube expansion processing, cleaning processing, or marking processing of capillaries determined to be abnormal by inspection, provided in a jig for performing the capillaries individual processing, A reader for reading the identification piece corresponding to the thin tube A to be subjected to thin tube individual processing;
When the position of the thin tube A to be subjected to the individual processing of the thin tube matches the position of the thin tube B in the tube chart corresponding to the thin tube A, the start of the individual processing of the thin tube is not matched. And processing operation means for instructing cancellation of the individual thin tube processing.

The method for identifying the position of a thin tube of a heat exchanger according to the present invention and the position identification device thereof are provided in a jig that creates a nest diagram in which a thin tube B indicating the arrangement of each thin tube A is described and performs individual processing of the thin tube. The reader reads the identification piece corresponding to the thin tube A to be processed individually, and checks whether the position of the thin tube A matches the position of the thin tube B in the tube chart. It is possible to prevent errors and leaks in the narrow tube, and to reliably identify the position of the narrow tube. In addition, since the work for confirming the thin tube is performed as part of the individual processing operation for the thin tube, the work efficiency can be improved.

(A), (B) is explanatory drawing of the process execution means of the position identification apparatus of the thin tube of the heat exchanger which concerns on one embodiment of this invention, and a process operation means, respectively. It is explanatory drawing of the process operation means of the position identification apparatus. It is explanatory drawing of the partial simulation tube sheet of the position identification apparatus. It is explanatory drawing of the heat exchanger which processes a thin tube by applying the position identification method of the thin tube of the heat exchanger which concerns on the 1st-3rd embodiment of this invention. It is explanatory drawing of the position identification method of the thin tube of the same heat exchanger. (A), (B) is explanatory drawing before the pipe expansion process of a thin tube, respectively, and explanatory drawing after a pipe expansion process.

Next, embodiments of the present invention will be described with reference to the accompanying drawings for understanding of the present invention.
As shown in FIGS. 1A and 1B, a position identification device (hereinafter also simply referred to as a position identification device) 10 for a thin tube of a heat exchanger according to an embodiment of the present invention includes a heat exchanger 11 ( The position of a large number (for example, about 1000 to 10000) of thin tubes (thin tubes A) 13 provided on the tube plate 12 of FIG. 4 is identified, and individual thin tubes are processed using a jig 14 for the thin tubes 13 to be processed. The processing is performed. The narrow tube individual processing includes, for example, narrow tube expansion processing, thin tube cleaning processing, and thin tube marking processing determined to be abnormal by inspection. This will be described in detail below.

As shown in FIGS. 1 and 2, the position identification device 10 includes a nest chart creation unit 15, a bar code labeler (an example of an identification piece creation unit), a process execution unit 16, and a process operation unit 17. .
As shown in FIG. 2, the tube chart creating means 15 uses the design data of the heat exchanger 11 input via the data input device 18, and the mounting position (row, number) of the narrow tubes 13 to be mounted on the tube sheet 12. ) And a virtual tube sheet is formed, and the mounting position of the obtained thin tube 13 is set as the position of the thin tube (thin tube B) 19 on this virtual tube plate, and the arrangement relationship of the thin tubes 13 on the tube plate 12 is set It has a tube nest drawing creation function for creating the tube arrangement data shown and displaying it as a tube nest drawing 21 on the display 20.

Here, the tube nest drawing creation means 15 can be formed by installing a program that develops the nest nest drawing creation function in a personal computer. The data input device 18 can be an input device (for example, a keyboard) for a personal computer, and the display device 20 can be a display device (a display or the like) for a personal computer.

The bar code labeler divides a large number of thin tubes 19 described in the tube nest 21 into a plurality of piping rows 22, and each of the thin tubes 19 has a piping row number X and a piping row 22 that specify the piping row 22 to which the thin tubes 19 belong. An identification piece 23 on which a barcode (an example of an identification code) Z having a rank number Y for specifying the position of the narrow tube 19 is described is produced. A commercially available barcode labeler can be used.
The identification code described in this identification piece is not limited to a bar code (one-dimensional code) as long as the position of the thin tube can be specified, but a conventionally known two-dimensional code such as a data matrix, QR code ( Registered trademark) or other codes may be used.

The processing execution means 16 is arranged at the place where the heat exchanger 11 is installed, and includes a jig 14, a partial simulated tube sheet 24, and a barcode reader (an example of a reader) 25.
The jig 14 is changed according to the type of individual thin tube processing. For example, when performing tube expansion processing of a thin tube, a jig provided with an expander tube expansion head or the like that is inserted into the thin tube and expands the thickness portion thereof can be used (see, for example, JP-A-2003-340534). . Moreover, when performing the washing | cleaning process of a thin tube, the jig | tool which inserts in a thin tube and injects high pressure washing water etc. can be used. When inspecting a thin tube, a jig (for example, an insertion air gun) provided with a eddy current sensor (an example of an inspection sensor) to be inserted into the thin tube at the tip is subjected to marking processing of the thin tube. In this case, jigs for applying a mark (color) or the like to the peripheral portion of the thin tube or the tube plate in the vicinity of the thin tube can be used.

As shown in FIGS. 1A, 1B, and 3, the partial simulation tube plate 24 corresponds to each pipe row 22 in the tube chart 21, and the identification code of each narrow tube 19 included in the pipe row 22 is used. Are arranged side by side on the front side of the elongated member 26 at the piping pitch in the design data corresponding to each of the thin tubes 19 included in the piping row 22. The width of the partial simulated tube plate 24 is, for example, 50 to 150% of the outer diameter of the thin tube 13 of the heat exchanger 11, but is not limited thereto.
As shown in FIG. 3, when the partial simulated tube plate 24 is installed on the actual piping row 28 adjacent to the actual processing piping row 27 on the back side of the elongated member 26 of the partial simulated tube plate 24, the actual piping is provided. For example, a tubular guide member 29 is provided for positioning the identification piece 23 of the partial simulated tube sheet 24 with respect to each of the thin tubes 13 of the actual processing pipe row 27 by fitting into the ends of the plurality of thin tubes 13 of the row 28. Yes.

In use, the piping row 22 to be processed is set as a processing piping row on the tube chart 21, and the partial simulated tube plate 24 corresponding to the processing piping row is replaced with a heat exchanger corresponding to the processing piping row. On the actual piping row 28 adjacent to the 11 actual processing piping rows 27, the identification pieces 23 of the partial simulated tube sheet 24 and the thin tubes 13 belonging to the actual processing piping row 27 are installed adjacent to each other.
The bar code reader 25 is attached to the jig 14, and when the thin tube 13 of the actual processing pipe row 27 corresponding to the thin tube 19 of the processing pipe row is processed using the jig 14, the narrow tube 13 to be processed is processed. The bar code Z of the identification piece 23 of the partial simulated tube sheet 24 arranged adjacent to it is read. A commercially available barcode reader 25 can be used.

Here, the case where a partially simulated tube sheet is used for identifying the position of each thin tube 13 has been described. However, without using this, a seal-like identification piece is provided on each tube plate 12 in the vicinity of each thin tube 13. It can also be pasted directly.
The vicinity of each thin tube 13 means a position where the pasted identification piece can recognize the target thin tube without being confused with the non-target thin tube. It may be anywhere on the tube plate, and includes a case where it is directly attached to a thin tube.

As shown in FIGS. 1B and 2, the processing operation means 17 is for instructing and confirming the processing of the narrow tube 13, and includes a narrow tube designator 30, a processing thin tube display 31, a determination device 32, and a processing operation device. 33 and a processing work indicator 34.
The narrow tube designator 30 includes pipe row designation data for setting the pipe row 22 to be processed as a processing pipe row on the tube chart 21 and narrow tube designation data for setting the processing target thin tube 19 in the processing pipe row. When input via the data input device 18, the piping row designation data and the narrow tube designation data are stored, and the position of the thin tube 19 to be processed is displayed on the tube chart 21 from the piping row designation data and the narrow tube designation data. It has a function to do.

The processing thin tube display 31 is connected to the barcode reader 25 via the cable 35, obtains the pipe row number X and the rank number Y from the barcode of the read identification piece 23, and the thin tube 13 corresponding to the identification piece 23. A function of displaying the position superimposed on the tube chart 21 is provided.
The determination unit 32 determines the position of the narrow tube 13 corresponding to the identification piece 23 obtained via the processing thin tube display 31 from the pipe row designation data and the thin tube designation data stored in the thin tube designation unit 30. 19 is provided with a function for determining whether or not the position 19 is met.
When the determination by the determination unit 32 matches, the processing operation unit 33 displays a signal instructing the processing start of the thin tube 13 by the jig 14 on the display unit 20. The display 20 is provided with a function for displaying a signal instructing the recovery of the data.

When the data indicating that the processing of the narrow tube 13 has been completed is input via the data input device 18, the processing work indicator 34 processes the narrow tube 19 on the nest figure 21 corresponding to the narrow tube 13 whose processing has been completed. It has a function to describe completed data. Here, the data that has been processed is described by, for example, changing the display color of the narrow tube 19 on the tube chart 21.
Further, the thin tube designator 30, the processing thin tube display 31, the determination device 32, the processing operation device 33, and the processing work display device 34 are installed in a personal computer with each program expressing a function corresponding to each device. Can be formed.

Then, the position identification method of the thin tube of the heat exchanger which concerns on the 1st Embodiment of this invention is demonstrated. This position identification method is an identification method for performing a tube expansion process, which is an example of the individual tube processing. In addition, the expansion process of a thin tube is the insertion of a jig 14 having a tube expansion head into a large number of thin tubes 13 attached to the tube plate 12 of the heat exchanger 11 shown in FIG. 6 (A) and 6 (B), each tube 13 is expanded and attached to the tube plate 12 (fixed). Details will be described below.

First, the design data of the heat exchanger 11 is input to the tube chart creating means 15 using the data input device 18, and the tube chart 21 showing the arrangement of the narrow tubes 13 provided on the tube sheet 12 based on the design data ( 1B) is created. A large number of narrow tubes 19 shown in the tube nest 21 are divided into a plurality of piping rows 22, and each of the narrow tubes 19 is identified with a piping row number X that identifies the piping row 22 to which the narrow tubes 19 belong, and the narrow tubes in the piping row 22. Each barcode having a rank number Y specifying 19 positions is assigned.
As a result, a specific thin tube 19 can be distinguished from among a large number of thin tubes 19 using the pipe row number X and the rank number Y on the tube chart 21 (the first step).

Next, the barcode assigned to each thin tube 19 is converted into a barcode Z using a barcode labeler, and an identification piece 23 on which the barcode Z is written is produced. And the identification piece 23 was divided for every piping row | line | column 22, and it was equipped with the width | variety of 50 to 150% of the outer diameter of the thin tube 13 with the piping pitch in the design data corresponding to each thin tube 19 in each piping row | line | column 22, respectively. Partial simulated tube sheets 24 are prepared in which identification pieces 23 are arranged side by side on the front side of an elongated member 26 (for example, a resin plate having a thickness of about 1 to 3 mm).
Thus, by arranging the partial simulated tube sheets 24 corresponding to the pipe rows 22 in the order of the pipe rows 22, an actual size simulated tube sheet corresponding to the tube plates 12 can be formed.

Then, the pipe line 22 to be processed is set as a processing pipe line on the tube chart 21, and pipe line designation data is input to the narrow pipe designation unit 30 via the data input unit 18. Moreover, the partial simulation tube sheet 24 corresponding to this process piping row | line | column is each identification of the partial simulation tube sheet 24 on the actual piping row | line | column 28 adjacent to the actual process piping row | line 27 of the heat exchanger 11 corresponding to a process piping row | line | column. The pieces 23 and the thin tubes 13 belonging to the actual processing pipe line 27 are installed adjacent to each other.

At this time, the piping row 22 is divided into a group (odd group) in which the piping row number X is an odd number and a group (even number group) in which the piping row number X is an even number, and the processing piping row is set in each group. . For example, when setting the processing piping row in the odd group, the partial simulated tube plate 24 corresponding to the odd group piping row 22 is adjacent to the odd actual processing piping row 27 corresponding to the odd processing piping row. It is installed on the even-numbered actual piping line 28. When the partial simulated tube sheet 24 is installed on the actual pipe row 28, the barcode Z of an arbitrary identification piece 23 provided on the partial simulated tube sheet 24 is read by the barcode reader 25, and the partial simulated tube sheet 24 is read. This is performed while confirming whether or not the pipe row number X matches the pipe row number of the actual processing pipe row 27 (the second step).

When carrying out the tube expansion process of the thin tube 13 provided on the tube plate 12, as shown in FIG. 5, the operator carrying the jig 14 equipped with the tube expansion head enters the heat exchanger 11 from the manhole 36, This is performed by inserting a jig 14 into the thin tube 13. Here, when the expansion process of the narrow tube 19 in the processing pipe line is performed, the narrow tube designation data of the narrow tube 19 is input to the narrow tube designator 30 via the data input unit 18. Thereby, the thin tube 19 to be processed is displayed on the tube chart 21 displayed on the display device 20.
Then, the operator of the processing operation means 17 arranged on the processing operation means 17 side sends the capillary tube designation data to the operator in the heat exchanger 11 via a communication means (for example, a radio device, a mobile phone) (not shown). This is transmitted as the pipe row number X of the processing pipe row and the rank number Y of the thin tube 19 to be processed in the processing pipe row.

The worker who has obtained the narrow tube designation data selects the narrow tube 13 of the actual processing piping line 27 corresponding to the narrow tube designation data from the narrow tubes 13 provided on the tube plate 12. Then, the barcode Z of the identification piece 23 on the partial simulation tube plate 24 arranged next to the selected capillary 13 is read by the barcode reader 25 attached to the jig 14, and then the selected capillary 13 is cured. The tube 14 is expanded using the tool 14.
Here, since the partial simulated tube plate 24 is installed in the actual piping row 28 adjacent to the actual processing piping row 27, the partial simulated tube plate 24 serves as a guide, and the actual processing piping row corresponding to the thin tube designation data. 27 narrow tubes 13 can be easily selected (the third step).

When the barcode Z of the identification piece 23 of the selected narrow tube 13 is read by the barcode reader 25 attached to the jig 14, the pipe row number X and the rank number Y are obtained from the barcode Z, and the selected narrow tube The position of 13 is displayed superimposed on the tube chart 21. Thereby, the determiner 32 determines whether or not the displayed position of the narrow tube 13 matches the position of the narrow tube 19 of the processing piping line on the tube chart 21.
When the position of the selected narrow tube 13 coincides with the position of the narrow tube 19 of the processing pipe line on the nest chart 21, a processing start signal is output from the processing operation unit 33 to the display unit 20, and the processing operation means The operator 17 instructs the worker in the heat exchanger 11 to start processing, and the expansion processing of the thin tube 13 is started.

On the other hand, when the position of the selected narrow tube 13 does not coincide with the position of the narrow tube 19 in the processing pipe line on the nest figure 21, the jig 14 is collected from the thin tube 13 via the processing operation unit 33 (processing is stopped). Is output to the display 20, and the operator of the processing operation means 17 instructs the operator in the heat exchanger 11 to collect the jig 14, and the jig 14 is collected from the thin tube 13. When the jig 14 is collected, the narrow tube 13 of the actual processing pipe row 27 corresponding to the thin tube designation data is selected again from the thin tubes 13 belonging to the actual processing pipe row 27 and next to the reselected thin tube 13. After the barcode Z of the identification piece 23 on the arranged partial simulated tube plate 24 is read by the barcode reader 25 attached to the jig 14, the jig 14 is inserted into the reselected narrow tube 13 (above). , The fourth step).
By the above method, the performance of the pipe expansion construction at the time of manufacturing the heat exchanger 11 can be clearly identified, and leakage of the pipe expansion construction can be prevented.

Next, a method for identifying the position of a thin tube of a heat exchanger according to a second embodiment of the present invention will be described. This position identification method is an identification for performing a thin tube cleaning process which is an example of a thin tube individual process. Since this method is substantially the same as the above-described identification method when performing the tube expansion process, only the different parts will be described. Note that the thin tube cleaning process is performed by sequentially placing a jig 14 for injecting high-pressure cleaning water into a large number of thin tubes 13 joined to the tube plate 12 of the heat exchanger 11 shown in FIG. In this method, the thin tubes 13 are inserted and cleaned, and the inside of the thin tubes 13 is cleaned before the heat exchanger 11 is inspected.

After performing the first to third steps, the fourth step is performed.
In this fourth step, when the barcode Z of the identification piece 23 of the selected narrow tube 13 is read by the barcode reader 25 attached to the jig 14, the position of the selected narrow tube 13 is overlapped with the nest figure 21. Displayed. Thereby, the determiner 32 determines whether or not the displayed position of the narrow tube 13 matches the position of the narrow tube 19 of the processing piping line on the tube chart 21.
When the position of the selected narrow tube 13 coincides with the position of the narrow tube 19 of the processing pipe line on the nest chart 21, a processing start signal is output from the processing operation unit 33 to the display unit 20, and the processing operation means The operator 17 instructs the operator in the heat exchanger 11 to start processing, and the thin tube 13 cleaning process is started.

On the other hand, when the position of the selected narrow tube 13 does not match the position of the narrow tube 19 of the processing pipe line on the nest figure 21, a signal instructing the recovery of the jig 14 from the thin tube 13 is received via the processing operation unit 33. The information is output to the display 20, and the operator of the processing operation means 17 instructs the operator in the heat exchanger 11 to collect the jig 14, and the jig 14 is collected from the thin tube 13. When the jig 14 is collected, the jig 14 is inserted into the reselected narrow tube 13 by the same method as described above.
By the above method, the cleaning performance of each capillary before inspection can be clearly identified, and cleaning leakage can be prevented.

Subsequently, a method for identifying the position of a thin tube of a heat exchanger according to a third embodiment of the present invention will be described. This position identification method is used for an inspection of a thin tube that has been determined to be abnormal by an inspection that is an example of individual tube processing. It is an identification method when performing the marking process, and is a process performed after inspecting the thin tube subjected to the above-described cleaning process. For this reason, first, after describing a method for identifying the position of a thin tube when inspecting the thin tube, a marking process for the thin tube will be described.
As shown in FIG. 4, the thin tubes are joined to the tube plate 12 of the heat exchanger 11 and the eddy current sensor is sequentially inserted into a large number of thin tubes 13 that have been subjected to the cleaning process using a jig 14. 13 inspections are performed. In addition, since the position identification method at the time of inspecting a thin tube is substantially the same as the identification method at the time of performing the above-described tube expansion processing and cleaning processing, only different portions will be described.

For the inspection of each thin tube, the method for identifying the position of the thin tube of the heat exchanger according to the present invention can be applied. Therefore, first, after performing the first to third steps, the fourth step is performed.
In this fourth step, when the barcode Z of the identification piece 23 of the selected narrow tube 13 is read by the barcode reader 25 attached to the jig 14, the position of the selected narrow tube 13 is overlapped with the nest figure 21. Displayed. Thereby, the determiner 32 determines whether or not the displayed position of the narrow tube 13 matches the position of the narrow tube 19 of the processing piping line on the tube chart 21.
When the position of the selected narrow tube 13 coincides with the position of the narrow tube 19 of the processing pipe line on the nest chart 21, a processing start signal is output from the processing operation unit 33 to the display unit 20, and the processing operation means The operator 17 instructs the worker in the heat exchanger 11 to start processing, and inspection of the narrow tube 13 in which the eddy current sensor is inserted is started. When the inspection of the narrow tube 13 is started, the inspection data is input to the inspection data analyzer via a signal cable (not shown) connected to the eddy current sensor, and an inspection result is obtained.

On the other hand, when the position of the selected narrow tube 13 does not match the position of the narrow tube 19 of the processing pipe line on the nest figure 21, a signal instructing the recovery of the jig 14 from the thin tube 13 is received via the processing operation unit 33. The information is output to the display 20, and the operator of the processing operation means 17 instructs the operator in the heat exchanger 11 to collect the jig 14, and the jig 14 is collected from the thin tube 13. When the jig 14 is collected, the eddy current sensor is inserted into the reselected narrow tube 13 using the jig 14 by the same method as described above.

Based on the above inspection results, it is possible to detect a thin tube that is a target of stop-plugging or extubation (including replacement), for example, a thin tube that has undergone corrosion thinning. In addition, when performing a marking process, it is good to utilize the 1st process and the 2nd process which were performed in the above-mentioned inspection.
When marking processing is performed on the thin tube 13 in which an abnormality has occurred, as shown in FIG. 5, an operator carrying a jig 14 equipped with a color imparting means such as a magic enters the heat exchanger 11 from the manhole 36. The jig 14 is brought close to the thin tube 13. Here, when performing the marking process of the narrow tube 19 in the processing pipe line, the narrow tube designation data of the narrow tube 19 is input to the narrow tube designator 30 via the data input device 18. Thereby, the thin tube 19 to be processed is displayed on the tube chart 21 displayed on the display device 20.

Then, the operator of the processing operation means 17 arranged on the processing operation means 17 side sends the narrow tube designation data to the operator in the heat exchanger 11 via the communication means, and the piping row number X of the processing piping row and the processing piping. This is transmitted as the rank number Y of the thin tubes 19 to be processed in the row.
The worker who has obtained the narrow tube designation data selects the narrow tube 13 of the actual processing piping line 27 corresponding to the narrow tube designation data from the narrow tubes 13 provided on the tube plate 12. Then, the barcode Z of the identification piece 23 on the partial simulation tube plate 24 arranged next to the selected capillary 13 is read by the barcode reader 25 attached to the jig 14, and then the selected capillary 13 is cured. A marking process is performed using the tool 14 (the third step).

When the barcode Z of the identification piece 23 of the selected narrow tube 13 is read by the barcode reader 25 attached to the jig 14, the pipe row number X and the rank number Y are obtained from the barcode Z, and the selected narrow tube The position of 13 is displayed superimposed on the tube chart 21. Thereby, the determiner 32 determines whether or not the displayed position of the narrow tube 13 matches the position of the narrow tube 19 of the processing piping line on the tube chart 21.
When the position of the selected narrow tube 13 coincides with the position of the narrow tube 19 of the processing pipe line on the nest chart 21, a processing start signal is output from the processing operation unit 33 to the display unit 20, and the processing operation means The operator 17 instructs the worker in the heat exchanger 11 to start processing, and the marking processing of the thin tube 13 is started.

On the other hand, when the position of the selected narrow tube 13 does not match the position of the narrow tube 19 of the processing pipe line on the nest figure 21, a signal instructing the recovery of the jig 14 from the thin tube 13 is received via the processing operation unit 33. The information is output to the display 20, and the operator of the processing operation means 17 instructs the operator in the heat exchanger 11 to collect the jig 14, and the jig 14 is collected from the thin tube 13. When the jig 14 is collected,
The jig 14 is brought closer to the reselected narrow tube 13 by the same method as described above (the fourth step).
According to the above method, since it is possible to clearly identify a thin tube to be stoppered or withdrawn with a mark, it is possible to prevent erroneous stoppering or withdrawing.

As described above, the present invention has been described with reference to the embodiment. However, the present invention is not limited to the configuration described in the above embodiment, and the matters described in the scope of claims. Other embodiments and modifications conceivable within the scope are also included. For example, the case where the position identification method and the position identification device of the thin tube of the heat exchanger of the present invention are configured by combining some or all of the above-described embodiments and modifications are also included in the scope of the right of the present invention. .
Moreover, in the said embodiment, although the identification piece is affixed on the elongate member, it is in the design data in the sheet | seat match | combined with the shape (except an actual process piping row | line | column) of a part or all of a tube sheet. The present invention can be applied even if the pipe pitches are aligned and pasted.

10: heat exchanger thin tube position identification device, 11: heat exchanger, 12: tube plate, 13: thin tube, 14: jig, 15: tube nest drawing preparation means, 16: processing execution means, 17: processing operation Means: 18: data input device, 19: capillary tube, 20: display, 21: tube chart, 22: piping row, 23: identification piece, 24: partially simulated tube plate, 25: barcode reader (reader), 26: elongate member, 27: actual processing pipe row, 28: actual piping row, 29: guide member, 30: narrow tube designator, 31: processing thin tube indicator, 32: determination device, 33: processing operation device, 34: processing Work indicator, 35: cable, 36: manhole

Claims (2)

In the method for identifying the position of a large number of capillaries A attached to the tube plate of the heat exchanger,
Create a tube chart showing the arrangement of the tubes A provided on the tube plate, and specify the position of each tube B in each tube B described in the tube diagram corresponding to each tube A A first step of assigning each identification code to be
A second step of installing an identification piece on which the identification code is written in the vicinity of each capillary A corresponding to each capillary B;
When each individual tube A is subjected to tube expansion processing, cleaning processing, or individual tube processing consisting of marking processing of a tube that has been determined to be abnormal by inspection, a reading provided in a jig for performing the tube individual processing is performed. A third step of reading the identification piece corresponding to the thin tube A to be subjected to the individual processing of the thin tube by a machine;
When the position of the narrow tube A to be subjected to the individual tube processing matches the position of the narrow tube B in the tube chart corresponding to the narrow tube A, the individual tube processing is started. And a fourth step of stopping the individual processing of the thin tubes, and a method for identifying the position of the thin tubes of the heat exchanger. In the position identification device for a large number of capillaries A attached to the tube plate of the heat exchanger,
A nest diagram creating means for creating a nest diagram showing the arrangement of the narrow tubes A provided on the tube sheet;
An identification code for specifying the position of each capillary B described in the tube chart is described, and an identification piece producing means for producing an identification piece installed in the vicinity of each capillary A corresponding to each capillary B,
For each of the capillaries A, when performing the capillaries individual processing consisting of tube expansion processing, cleaning processing, or marking processing of capillaries determined to be abnormal by inspection, provided in a jig for performing the capillaries individual processing, A reader for reading the identification piece corresponding to the thin tube A to be subjected to thin tube individual processing;
When the position of the thin tube A to be subjected to the individual processing of the thin tube matches the position of the thin tube B in the tube chart corresponding to the thin tube A, the start of the individual processing of the thin tube is not matched. And a processing operation means for instructing to stop the individual processing of the thin tubes.

Images