KR20190128635A - Seal construction management method, seal construction management device, seal construction management program and seal construction management system - Google Patents

Abstract

As a seal construction management method in which a plurality of fastening points are set on a flange sandwiching a gasket 12, and the fastening points are provided with bolts 6 and nuts 8 at each fastening point. The torque value to be given to the bolt or nut is calculated or selected accordingly, the torque value is set in the fastening tool 14, and the output torque of the fastening tool is changed stepwise or continuously according to the number of cycles or the fastening point. This makes it possible to reach the axial force of each bolt to the target axial force.

Description

Seal construction management method, seal construction management device, seal construction management program and seal construction management system

The present invention relates to a seal construction management technology used for flange fastening connecting pipes, valves, pumps, and the like.

Flange joints are used for pipe connections, pumps, etc. A gasket is sandwiched between flanges of this flange joint, and fastening is performed by bolts and nuts arranged at plural points of the flange. A fastening tool such as a torque wrench is used for this fastening.

Regarding this fastening tool, in a tool in which an electric motor is used as the rotation drive source, it is known to intermittently apply a current pulse to the motor, control the current value in accordance with the detected torque, and stop the current pulse when the target torque is reached. (For example, patent document 1).

Japanese Unexamined Patent Publication No. 2002-1676

By the way, the fastening torque is provided from the fastening tool with respect to the bolt and nut arrange | positioned at several points for the fastening of a flange joint. If a tool capable of torque management can be used for this tightening, the tightening torque can be applied to the bolts and nuts, thereby enabling uniform and uniform tightening.

However, flanges and gaskets are numerous and require considerable experience in selecting a suitable gasket. In addition, the fastening order of the plurality of bolts arranged on the flange is not uniform, and even the use of a fastening tool capable of torque management does not reduce construction management alone. Still, in order to increase the reliability of the construction, it is desirable to use a skilled worker, require training or experience for the skilled person, and the burden on the worker is excessive, and the management of the seal construction is very important.

In such a seal construction, in order to avoid unbalanced fastening or crushing, in addition to the selection and combination of fastening methods such as diagonal fastening and round fastening, the skill, ability and experience of the contractor are determined by the accuracy of construction. This affects the construction.

In view of these problems, the object of the present invention is to automate the setting of the output torque in accordance with the number of cycles of the fastening point and the fastening point, thereby facilitating the construction management of the seal and improving the construction accuracy. It is in doing it.

In addition, another object of the present invention is to facilitate the construction management of the seal and to improve the construction accuracy by using a fastening tool capable of automatically setting the output torque in view of such a problem.

In order to achieve the above object, according to one aspect of the seal construction management method of the present invention, a plurality of fastening points are set in the flange sandwiched between the gasket, seal construction management for fastening provided with bolts and nuts at each fastening point A method comprising the steps of: calculating or selecting a torque value applied to the bolt or nut according to the number of times of fastening of the fastening point or the point of fastening; a step of setting the torque value to a fastening tool; A process of changing the output torque of the fastening tool step by step or continuously is included.

In the seal construction management method, the method may further include a step of detecting the cycle number or the fastening point of the fastening tool.

In the seal construction management method, the fastening tool may further include a step of setting the net number of times of the fastening point or the fastening point.

In the seal construction management method, the step of detecting the axial force of the bolt, the step of detecting the cycle number or the fastening point of the fastening tool using the detected change information of the axial force and the information identifying the bolt It may include.

In order to achieve the above object, according to one aspect of the seal construction management apparatus of the present invention, a plurality of fastening points are set on the flange sandwiched between the gasket, seal construction management for fastening provided with bolts and nuts at each fastening point An apparatus, comprising: calculating or selecting a torque value applied to the bolt or nut according to the number of fastening points or the fastening point of the fastening point, and setting the torque value to a fastening tool, stepwise according to the number of fastening or the fastening point Or control means for continuously changing the output torque of the fastening tool.

In the seal construction management device, a detection means for detecting the circulation rate or the fastening point of the fastening point of the fastening tool may be provided.

In the seal construction management device, the fastening tool may be provided with setting means for setting the circulation rate or the fastening point of the fastening point.

In the seal construction management apparatus, the control means may be provided in the fastening tool or may be provided separately from the fastening tool and connected by wire or wirelessly.

In the seal construction management device, the detection means includes an axial force sensor for detecting the axial force of the bolt, and the fastening tool is used by using the change information of the axial force detected by the axial force sensor and information for identifying the bolt. The circulation number or the fastening point of may be detected.

In order to achieve the above object, according to one aspect of the seal construction management program of the present invention, the number of loops of the plurality of fastening points set on the flange sandwiching the gasket or the torque value applied to the bolt or nut according to the fastening point The computer realizes the function of selecting or selecting the torque value, the function of setting the torque value to the fastening tool, and the function of changing the output torque of the fastening tool stepwise or continuously in accordance with the number of cycles or the fastening point.

In order to achieve the above object, according to one aspect of the seal construction management system of the present invention, a plurality of fastening points are set on the flange sandwiching the gasket, seal construction management to fasten with a bolt and nut at each fastening point A system comprising: a fastening tool capable of controlling the output torque applied to the bolt or nut stepwise or continuously, and wired or wirelessly connected to the fastening tool, the bolt according to the number of loops of the fastening point or the fastening point Or a controller that calculates or selects a torque value applied to the nut, sets the torque value to the fastening tool, and changes the output torque of the fastening tool stepwise or continuously in accordance with the circulation rate or the fastening point.

According to the present invention, any of the following effects can be obtained.

(1) The axial force of each bolt can be reached at the target axial force by changing the output torque applied from the fastening tool to the bolt or nut at the fastening point of the flange stepwise or continuously according to the number of fastening points or the fastening point of the fastening point.

(2) The output torque applied from the fastening tool to the bolt or nut at the fastening point of the flange can be automatically changed to the optimum value stepwise or continuously according to the number of fastenings or the fastening point of the fastening point, so that it is suitable for the skill and intuition of the contractor. It is possible to realize a highly accurate seal construction without being affected.

(3) Since the number of cycles for reaching the target axial force of the bolts of the plurality of fastening points can be set, the uniformity and speed of the seal construction can be achieved.

(4) Mistake of the constructor can be reduced, and the reliability of seal construction can be improved.

Further objects, features, and advantages of the present invention will become more apparent by reference to the accompanying drawings and the embodiments.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the seal construction management apparatus which concerns on 1st Embodiment.
2 is a diagram illustrating a circulation form of a fastening point.
3 is a flowchart showing a process sequence of seal construction management.
FIG. 4A is a diagram illustrating a seal construction management system according to a second embodiment, and B is a diagram illustrating a function of a control unit. FIG.
5 is a diagram illustrating a processing sequence of seal construction management.
FIG. 6 is a diagram illustrating a seal construction management apparatus according to a third embodiment. FIG.
It is a figure which shows the seal construction management system which concerns on an Example.
FIG. 8A is a diagram illustrating an example of a fastening tool, and B is a diagram illustrating an example of an axial force sensor. FIG.
Fig. 9A is a diagram showing hardware of the controller, and B is a diagram showing a storage unit.
10 is a diagram illustrating a server.
11 is a diagram illustrating a fastening condition table.
12 is a diagram illustrating a torque value table.
It is a figure which shows the modification of a torque value table.
14 is a diagram illustrating a processing sequence of the seal construction management system.
It is a figure which shows the change of the detection axial force using the fastening management.

[First embodiment]

1 has shown the seal construction management apparatus which concerns on 1st Embodiment. The structure shown in FIG. 1 is an example, and this invention is not limited to such a structure.

In the seal construction management apparatus 2-1, a plurality of bolts 6 and nuts 8 of the seal construction portion 4 for connecting pipes, valves, pumps, and the like are used for fastening and management thereof. The seal construction part 4 is an example of a fastening object, and the gasket 12 is sandwiched between the flanges 10-1 and 10-2, and the bolt 6 and the nut 8 are arranged at a plurality of fastening points. It is. In this example, the fastening points of the flanges 10-1 and 10-2 are set at eight points on the circumferential edge, that is, at intervals of an angle θ = 45 °, so that the eight bolts 6 and the nuts 8 are arranged. It is.

This seal construction management apparatus 2-1 is provided with the fastening tool 14 and its control part 16-1. The fastening tool 14 may be a tool capable of managing the change of the output torque as a means for generating the output torque T applied to the bolt 6 or the nut 8. In short, a general power tool such as a nut runner can be used for the fastening tool 14.

In this fastening tool 14, the operator grips the grip 18 to hold the apparatus main body 20, fits the socket 22 to the nut 8 at the fastening point, and then presses the trigger switch 24. , The output torque T can be given to the nut 8 at the tightening point.

The control part 16-1 is an example of the control means of the fastening tool 14, and is comprised with a computer, for example. In the function of this control unit 16-1,

a. A function of calculating or selecting the torque value τ applied to the bolt 6 or the nut 8 in accordance with the circulation number N of the fastening point or the fastening point P.

b. A function of setting torque value τ to fastening tool 14

c. The function of changing the output torque T of the fastening tool 14 stepwise or continuously according to the circulation number N or the fastening point P

Etc. are included.

In these functions a, b and c, the fastening point is a place where the fastening force is applied between the flanges 10-1 and 10-2. In the above-described example, the arrangement position of the bolt 6 or the nut 8 is provided. to be. The number N of fastening points P means the positions P1, P2 of the bolt 6 and the nut 8; The number of units that round Pn.

Torque value (tau) is a torque set in order to reach the target axial force Fe of a fastening point, and is a value which should be given to the bolt 6 or the nut 8 according to the circulation number N or the fastening point P of a fastening point. This torque value (tau) is calculated as a level value required for reaching the target axial force Fe by the fastening condition containing the gasket 12. As shown in FIG. Instead of calculating this torque value τ, you may select from the database of previously calculated torque value tau according to the circulation number N of the fastening point, or the fastening point P.

In b, torque value (tau) is control information which the control part 16-1 outputs to the fastening tool 14, and torque value (tau) is set to the fastening tool 14 by this control information.

In c, the output torque T of the fastening tool 14 is changed stepwise or continuously by the control part 16-1 according to the circulation number N or the fastening point P. FIG. Thereby, the axial force of the bolt 6 or the nut 8 of each fastening point reaches the target axial force Fe.

In the circulation of the fastening point, as shown by arrow a in Fig. 2A, the positions P1, P2. Pn may be traversed one after the other, and as shown by arrow b of FIG. Pn may be circulated by changing the fastening point in the radial direction of the flanges 10-1 and 10-2. In short, positions P1, P2... The fastening point may be changed continuously in numerical order, or the fastening point may be regularly skipped by a predetermined number. Therefore, the circulation number N is located at positions P1, P2. It is not limited to the count value of the continuous circulation in order of Pn, but may be the count value which counted by the unit of the circulation which skipped the predetermined position.

3 has shown the process of seal construction management using this control part 16-1.

This construction management is an example of a seal construction management method, in which a plurality of fastening points are set on the flanges 10-1 and 10-2 sandwiching the gasket 12, and the bolts 6 and the nut ( 8) steps (S101, S102, S103, S104, S105, S106) are included.

In this seal construction management, the torque value τ applied to the bolt 6 or the nut 8 is calculated or selected depending on the number of turns N of the fastening point or the fastening point P in the seal construction (before or during construction). (S101).

The calculated or selected torque value τ is set to the fastening tool 14 by the controller 16-1 (S102).

In the fastening construction of the fastening point, it is determined whether the circulation number N of the fastening point or the fastening point P is changed (S103). If there is a change in the number of fastening points N or the fastening point P (YES in S103), the output torque T of the fastening tool 14 is changed stepwise or continuously in accordance with the number of fastening points N or the fastening point P (S104) (S104). ). If there is no change in the circulation number N of the tightening point or the fastening point P (NO in S103), the current output torque T is maintained (S105).

Then, it is determined whether the axial force F at each tightening point reaches the target axial force Fe (S106). If the axial force F of each fastening point does not reach the target axial force Fe (NO of S106), each process of S103-S106 is repeated and setting of the torque value τ according to the change of the circulation number N of the fastening point or the fastening point P is set. This is repeated, and the output torque T is changed.

When the axial force F of each fastening point reaches the target axial force Fe (YES of S106), seal construction is completed.

The axial force F of each fastening point may be detected by the axial force sensor from each bolt 6, and may be calculated using the detection value of the torque sensor in the fastening tool 14 side.

<Effect of 1st Embodiment>

(1) A reliable seal construction with high accuracy can be realized without depending on the skill and intuition of the contractor.

(2) Calculation, setting of torque value τ, and detection of output torque T can be performed in a consistent manner, so that highly reliable seal construction can be accelerated.

(3) We can raise reduction of mistake of seal construction of constructor and safety of constructor.

Second Embodiment

FIG. 4 (A) has shown the seal construction management system which concerns on 2nd Embodiment. In FIG. 4A, the same parts as those in FIG. 1A are denoted by the same reference numerals. The configuration shown in FIG. 4A is an example, and the present invention is not limited to such a configuration.

This seal construction management system 2-2 is provided with the fastening tool 14, the control part 16-2, and the axial force sensors 26-1, 26-2 ... 26-n. Since the fastening tool 14 is the same as the structure mentioned above, the description is abbreviate | omitted.

The control part 16-2 is an example of the control means of the fastening tool 14, for example, is comprised by a computer. Although the control part 16-2 controls the fastening tool 14 similarly to the control part 16-1 (FIG. 1 (A)), the axial force sensor 26-1, 26-2 ... 26-n controls the control. Is different from the control unit 16-1 in that it uses the detection axial force. The axial force sensors 26-1, 26-2 ... 26-n are examples of axial force detection means for detecting the axial force of each bolt 6 in the seal construction part 4. In this example, the axial force sensors 26-1, 26-2 ... 26-8 are separately provided in the eight bolts 6, and each detected axial force is introduced into the control unit 16-2. The control unit 16-2 is used for comparison information of whether or not each detected axial force F has reached the target axial force Fe, specific information of the fastening point, circulation information of the fastening point, and the like.

In this control part 16-2, as shown to FIG. 4 (B), the 1st, 2nd and 3rd functions 28, 30, and 32 are implement | achieved. In function 28, the torque value τ applied to the bolt 6 or the nut 8 is calculated or selected according to the number N of fastening points or the fastening point P. In the function 30, the torque value (tau) is set to the fastening tool 14. And in function 32, the output torque T of the fastening tool 14 is changed or maintained according to the circulation number N or the fastening point P stepwise or continuously.

5 shows a processing sequence of seal construction management of the seal construction management system 2-2.

At the time of seal construction, the initial setting of the fastening tool 14 is performed (S201), and the initial setting of the control unit 16-2 is performed (S202). Each axial force sensor 26-1, 26-2 ... 26-n detects the axial force of each bolt 6 (S203), and the control part 16-2 introduces each detected axial force (S204). The control unit 16-2 determines the circulation number N of the fastening point P or the fastening point P (S205). In this case, each fastening point P can be specified by the change of the number of eight bolts 6 in 8 fastening points P1-P8, and detection axial force, and the number of turns N is 8 points, for example. The number of turns N is specified by the number of times that the bolt 6 is fastened in units of fastening, and the fastening of the same bolt 6 is performed in a single order.

The control unit 16-2 calculates the torque value τ applied to the bolt 6 or the nut 8 in accordance with the circulation number N of the tightening point P or the fastening point P (S206). In this calculation, the selected gasket 12 refers to the tightening conditions and the like, and the torque value τ0 for the number of times N = 0, the torque value τ1 for the number of times N = 1, and the torque value τ2 for the number of times N = 2. … Calculate In this case, the torque values τ 0, τ 1, τ 2. You may select the torque value (tau) according to the circulation number N from the.

This torque value (tau) is provided to the fastening tool 14 from the control part 16-2, and is set (S207). The fastening tool 14 generates the output torque Tτ according to this torque value τ. In this way, the output torque Tτ is changed or maintained stepwise or continuously according to the number N of fastenings or the fastening point P (S208).

Then, the builder applies the output torque T to the bolts 6 or the nuts 8 of the fastening points P1 to P8 by the fastening tool 14, and performs the fastening (S209). The axial force sensors 26-1, 26-2 ... 26-8 detect the axial force of the bolt 6 at the respective fastening points P1 to P8 (S210), and the detected axial force is introduced into the control unit 16-2 ( S211).

The control unit 16-2 determines whether each detected accumulation force has reached the target accumulation force (S212). If each detection axial force F does not reach target axial force Fe (NO of S212), it returns to S205 and repeats the process of S205-S212.

When each detected axial force F reaches the target axial force Fe (YES of S212), it becomes the termination of fastening (S213), it notifies the fastening tool 14, and completes fastening. The completion of the fastening may be notified by using the display device.

<Effect of 2nd Embodiment>

(1) Calculation of the torque value τ according to the number of fastening points N or the fastening point P of the fastening point, the setting of the torque value τ corresponding to the number of fastening or fastening points of the fastening point, and the number of fastening or fastening points of the fastening point of the output torque T By changing continuously or stepwise, the axial force F of the bolt 6 can be reached quickly at the target axial force Fe.

(2) Since the output torque T applied from the fastening tool 14 to the bolts 6 can be grasped and monitored by the detection axial force F from each bolt 6, reliable seal construction can be realized.

(3) A proper axial force can be obtained as a target axial force without generating a lack of axial force or excessive axial force.

(4) The fastening of the fastening point can be performed not only in the bolt number order but also in various forms in which the bolt number is skipped, so that the proper seal construction can be quickly performed using any fastening turn.

[Third Embodiment]

6 has shown the seal construction management apparatus which concerns on 3rd Embodiment. In FIG. 6, the same code | symbol is attached | subjected to the same part as FIG. The structure shown in FIG. 6 is an example, and this invention is not limited to such a structure.

This seal construction management apparatus 2-3 is provided with the fastening tool 14, the control part 16-3, and the fastening condition setting part 34. As shown in FIG. Since the fastening tool 14 is the same structure as the seal construction management apparatus 2-1, the description is abbreviate | omitted.

The fastening condition setting part 34 sets the circulation number N of the fastening point P or the fastening point P which is an example of a fastening condition. The control unit 16-3 controls the calculation or selection of the torque value τ and the output torque T of the fastening tool 14 by the forward number N or the fastening point P of the fastening point P set by the fastening condition setting unit 34. do. Thus, the function of the control part 16-1 of 1st Embodiment may be implement | achieved by the control part 16-3 and the fastening condition setting part 34. FIG.

Similarly to this third embodiment, even if the configuration is used to set the number N of fastening points or the fastening point P of the fastening point P using the fastening condition setting unit 34, the same effects as in the above embodiment can be obtained.

Example

7 shows the seal construction management system according to the embodiment. The structure shown in FIG. 7 is an example, and this invention is not limited to this structure.

This seal construction management system 2-4 is provided with the fastening tool 14, the controller 16-4, and the server computer (henceforth simply a "server") 16-5. Since the fastening tool 14 is the same as the structure mentioned above, the description is abbreviate | omitted.

The controller 16-4 is connected to the fastening tool 14 by wire or wirelessly, and in this example is connected by a cable 36. This controller 16-4 is constituted, for example, by a computer alone or in association with the server 16-5. Instead of the cable 36 connection, Wi-Fi connection or the like may be used as an example of the wireless connection. The front panel part 38 of this controller 16-4 is provided with the some input operation part 40 and the display part 42. As shown in FIG.

This controller (16-4) is a computer process,

a. Calculate or select the torque value τ applied to the bolt 6 or the nut 8 according to the number N of fastening points or the fastening point P.

b. Setting of torque value τ to fastening tool 14

c. Change in output torque T of the fastening tool 14 stepwise or continuously in accordance with the circulation number N or the fastening point P

d. Acquisition of fastening management information from server 16-5

e. Obtaining Flange Information of Flange 10-1, 10-2

f. Get Gasket Information for Gasket (12)

g. Matching Gasket Information

h. Selection of the fastening conditions from the fastening condition information, input to the fastening tool 14

i. Presentation of conclusion result information

j. Presentation of evaluation information of conclusion result

The processing and the functions of the above are realized.

This controller 16-4 is associated with the server 16-5 by wire or wirelessly as the communication medium 44 represented by the broken line. The server 16-5 may use a personal computer, for example, as a computer that supports the information processing of the controller 16-4 or manages the information processing. As an example, the server 16-5 is provided with a processing unit 46, an input operation unit 48, and a monitor 50.

<Fastening tool (14)>

8A illustrates an example of hardware of the fastening tool 14. The fastening tool 14 includes a control unit 52, a motor 54, and a torque sensor 56 similarly to a general power tool.

The control part 52 is provided with a computer and a motor drive part, and is provided with control information, such as torque value (tau), from the controller 16-4. The motor 54 is driven in accordance with the fastening information such as the torque value τ and the drive current is supplied to the motor 54 at the time of the conduction of the trigger switch 24.

The rotation of the motor 54 is transmitted to the socket 22 mounted on the rotation shaft 58, and the output torque T is applied to the nut 8 fitted to the socket 22. A gear mechanism may be provided on the rotating shaft 58 to transmit the rotational force of the motor 54 to the socket 22 at a desired gear ratio.

The torque sensor 56 detects the output torque T from the motor 54 or the rotating shaft 58, and the detected torque is introduced into the control unit 52. This torque sensor 56 may detect the fastening torque of the bolt 6 and the nut 8, and may be provided in the exterior of the fastening tool 14. As shown in FIG.

8B shows an example of the bolt 6 provided with the axial force sensor 26. When each bolt 6 is provided with the axial force sensor 26 and the axial force F applied to each bolt 6 is detected, the value of the output torque T of the fastening tool 14, the increase or decrease can be measured. . The axial force sensor 26 may use a deformation sensor, for example.

<Controller (16-4)>

9A shows an example of the controller 16-4. While the controller 16-4 is a control means of the fastening tool 14, it is an example of the seal construction management apparatus of seal fastening.

The controller 16-4 is configured of, for example, a computer, and includes a processor 60, a storage unit 62, an input / output unit (I / O) 64, an input operation unit 40, a communication unit 68, and The display part 42 is provided.

The processor 60 is an example of processing means and performs information processing such as an OS, a seal construction management program, and the like in the storage unit 62. This information processing includes the acquisition of the fastening condition information from the server 16-5, the input of the fastening condition including the torque value τ for the fastening tool 14, the acquisition of the output torque T from the fastening tool 14, and the fastening state. Control of the monitoring and evaluation, display of evaluation results, output of fastening result information, and the like.

The storage unit 62 is used for storing the OS, seal construction management program, fastening condition information, detection information, and the like, and includes a ROM and a RAM. In this storage unit 62, a memory element capable of holding the stored contents may be used.

The I / O 64 is controlled by the processor 60 and used for input and output of control information. The I / O 64 is connected to, for example, a barcode reader 72 and a removable external memory 74 as an external device. The barcode reader 72 is an example of an information acquisition unit. The external memory 74 may use, for example, a USB (Universal Serial Bus) memory as a log memory extraction memory.

The input operation part 40 is equipped with a key switch, a touch sensor, etc., and is used for an input instrument of input information, an instrument for extracting output information, mode switching, and the like.

The communication unit 68 is controlled by the processor 60 and used for wireless connection or internet connection with an external device such as the server 16-5.

The display unit 42 is controlled by the processor 60 and is an example of a means for presenting input information or output information. This display part 42 is equipped with the green lamp 76-1, the red lamp 76-2, etc. as a display means of state information, for example. The green lamp 76-1 is turned on in normal operation, and the red lamp 76-2 is turned on in abnormality.

9B shows an example of the contents of the memory of the storage unit 62. The storage unit 62 is provided with a temporary storage area 78-1 and a storage area 78-2. In the temporary storage area 78-1, the flange information 80, the gasket information 82, the worker information 84, the fastening result information 86 obtained from the fastening tool 14, and the like are temporarily stored.

Databases, such as the fastening condition table 88 and the torque value tables 90-1 and 90-2, are constructed in the storage area 78-2. In the fastening condition table 88, fastening condition information related to the flanges 10-1 and 10-2 is recorded. Torque value tables 90-1 and 90-2 store torque value information, such as the number of circulation N and the torque value (tau) from which a circulation form differs.

<Server (16-5)>

10 shows an example of the server 16-5. The server 16-5 is an example of a device for presenting log information while being a support device of the controller 16-4.

The server 16-5 includes a processor 92, a storage unit 94, an input / output unit (I / O) 96, and a communication unit 98 in the processing unit 46, and the input operation unit 48 described above. And a monitor 50.

The processor 92 performs information processing such as an OS or a seal construction management program in the storage unit 94. This information processing includes processing of providing the fastening condition information to the controller 16-4, obtaining information indicating the fastening result from the controller 16-4, and presenting the fastening result information.

The storage unit 94 is used for storing the OS, seal construction management program, fastening condition information, log information, and the like, and includes a ROM and a RAM. In this storage unit 94, a storage device such as a hard disk or a semiconductor memory capable of holding the stored contents may be used.

The I / O 96 is controlled by the processor 92 and used for input and output of control information. The communication part 98 is used for the connection of the controller 16-4 etc. by radio, for example. The external memory 100 is connected to this I / O 96 as an external device, for example.

The communication unit 98 is controlled by the processor 92 and is used for wireless connection with an external device such as the fastening tool 14 and the controller 16-4, or for internet connection.

The input operation unit 48 is used for input of input information, an extraction instrument for output information, mode switching, and the like.

The monitor 50 is used as an example of the information presentation part and the display part, for example, for displaying the fastening condition table 88 and the torque value tables 90-1 and 90-2. The screen display part of this monitor 50 may be provided with the touch panel 102, and may perform input information corresponding to display information instead of the input operation part 48. FIG.

<Closing conditions table 88>

11 illustrates an example of the fastening condition table 88. The fastening condition table 88 stores the fastening condition information and is provided to the controller 16-4 from the server 16-5. The fastening condition table 88 includes application point information, flange information 80, gasket information 82, fastening result information 86, and the like as an example of fastening condition information. Application point information is information, such as an implementation line. The flange information 80 is individual information used for identification of the flanges 10-1 and 10-2. Gasket information 82 is individual information used for identification of gasket 12. The fastening condition includes link information with the torque value tables 90-1 and 90-2 in which the torque value τ, the circulation number N, and the like are stored as the torque value information.

As shown in FIG. 11, the fastening condition table 88 includes a line information part 104, a flange information part 106, a gasket information part 108, a bolt information part 110, and a fastening condition information part 112.

The line information section 104 includes, for example, Line A, Line B... Identification information of a fastening point such as a pipe line or the like is stored. In the flange information section 106, a flange number for identifying the flanges 10-1, 10-2, a flange size, and the like are stored. In the gasket information unit 108, a gasket part number for identifying the gasket 12, a gasket dimension, and the like are stored. The number of bolts and the like are stored in the bolt information unit 110. The fastening condition information unit 112 stores a fastening condition number and the like for identifying the fastening condition.

Since the fastening condition table 88 is provided as the fastening condition information from the server 16-5, the controller 16-4 can grasp necessary fastening condition information regarding the fastening with the server 16-5, Fastening condition information can be used independently.

<Torque Tables 90-1 and 90-2>

The torque value table 90-1 shown in FIG. 12 corresponds to the circulation form shown in FIG. 2A described above. In this torque value table 90-1, the torque value τ (= τ01, τ02… τnn) of the number of turns N (= 0, 2… n) of the fastening point P and the fastening point P (= P1, P2… Pn) is included in the torque value table 90-1. Is stored. These torque values τ are calculated and stored according to the number of turns N (= 0, 2... N) in accordance with the flanges 10-1, 10-2 and the gasket 12 which are the fastening targets. Each value may be calculated at the time of seal construction, may store a value calculated in advance, and may select this.

The torque value table 90-2 shown in FIG. 13 corresponds to the seal construction in the case of transposing the circulation form shown in FIG. 2B described above. In the torque value table 90-2, when the number N of fastening points P is less than 1 (N <1), the fastening points P specified by the angle θ of the fastening points P (= P1, P2 ... Pn) Torque values τ (= tau 01, tau 02... Nn) are stored. As a torque value after fastening (N = 1), it calculates and stores with respect to the torque value (tau) same as the torque value table 90-1 shown in FIG. Each value may be calculated at the time of seal construction, may contain a value calculated in advance, and may be selected in the same manner as in the case of the torque value table 90-1.

<Processing sequence of seal construction management>

14 shows the processing sequence of seal construction management by the seal construction management system 2-42.

At the time of seal construction, the initial setting of the fastening tool 14 is performed (S301), and the initial setting of the controller 16-4 is performed (S302). After this initial setting, the controller 16-4 is linked with the server 16-5, and the fastening condition information provided from the server 16-5 is introduced into the controller 16-4 (S303). Introduction of the fastening condition information is realized by acquiring the fastening condition table 88 and the torque value tables 90-1 and 90-2.

In the controller 16-4 having obtained the fastening condition information, the fastening conditions corresponding to the flanges 10-1 and 10-2 and the gasket 12 selected in advance are selected (S304). The selection of the fastening condition may include a process of selecting the value if the torque value tau is calculated in advance. In this way, after the preparation for fastening, the controller 16-4 is associated with each of the axial force sensors 26-1, 26-2 ... 26-n, and the respective axial force sensors 26-1, 26-2 ... 26 -n) detects the axial force of each bolt 6 (S305), and the controller 16-4 introduces each detected axial force (S306).

The controller 16-4 determines the number of rotations N of the fastening points P or the fastening points P using the respective detected axial forces (S307). In short, for example, from the fastening point P = 8 point, it is possible to specify which of the fastening points P1 to P8 from the change of the number of eight bolts 6 and the axial force, and the circulation number N is the fastening point P1 to P8. It is as described above that the number of times of the circumference N being 1 can be specified by setting the number of times of sequential ordering to 1 as a unit of the fastening of the plurality of bolts 6 selected from the above.

The controller 16-4 calculates the torque value τ applied to the bolt 6 or the nut 8 in accordance with the circulation number N of the tightening point P or the fastening point P (S308). In this calculation, the torque values τ01, τ02... , Torque values? 11 and? 12 for the number of turns N = 1. For torque N = 2, torque values? 21 and? 22. Calculate In this case, the previously calculated torque values? 0,? 01,? 02,. You may select the torque value (tau) according to the circulation number N from (tau) nn.

This torque value (tau) is provided to the fastening tool 14 from the controller 16-4, and is set (S309). The fastening tool 14 generates the output torque T in accordance with this torque value τ. In this way, the output torque T is changed or maintained stepwise or continuously in accordance with the number N of fastening points P or the fastening points P (S310).

And the contractor attaches the output torque T to the bolt 6 or the nut 8 of a fastening point by the fastening tool 14, and performs a fastening (S311). Each axial force sensor 26-1, 26-2 ... 26-n detects the axial force of the bolt 6 of each fastening point P (S312), and each detection axial force F is introduce | transduced into the controller 16-4. (S313).

The controller 16-4 determines whether each detected axial force F has reached the target axial force Fe (S314). If each detection axial force F does not reach target axial force Fe (NO of S314), it returns to S307 and repeats the process of S307-S313.

When each detected axial force F reaches the target axial force Fe (YES of S314), it will become a fastening end (S315) and input to the fastening tool 14, and complete a fastening. This fastening completion may be presented using a display device, for example, the monitor 50.

In this embodiment, after completion of the fastening, the fastening result information is introduced from the fastening tool 14 to the controller 16-4 (S316), and the fastening result information is sent from the controller 16-4 to the server 16. -5). In response to this, the server 16-5 displays the conclusion result information (S317). In this display, the builder information and the evaluation information of the tightening may be included.

In this processing procedure, the following processing may be included.

a) The flanges 10-1 and 10-2 are provided with the flange tag which specified the flange information by the barcode, and the flange information is acquired from the flange tag using the barcode reader 72, or it is obtained as a barcode by the gasket 12. Gasket information may be obtained from the specified gasket tag, and these may be referred to the fastening condition information.

b) It may be judged whether or not the acquired flange information and gasket information correspond to the fastening information, and display the appropriateness.

c) The contractor's identification information and skill information may be obtained from the ID card owned by the contractor, and the contractor information may be reflected in the conclusion result information.

<Seal construction using decision management>

FIG. 15 has shown the change of the detection axial force by the fastening management mentioned above. In A, B, and C of FIG. 15, the coordinate axis y is grasped radially from the center O corresponding to the fastening point P (= P1 to P8), and the axial force is taken in the direction away from the coordinate axis from the center O. F is the detection force and Fe is the target force. In this example, the case where the target axial force Fe is reached at the circulation number N = 3 is shown.

In the case where the forward number N of the fastening point P and the axial force F are set to 30 (%) of the target axial force Fe (F = 0.3 Fe), as shown in Fig. 15A, the fastening point P (shown as an example) Each detection axial force F of = P1-P8) is obtained. Even if the same axial force is set, the change in the detection axial force F is seen due to the influence of the elastic interaction by the flanges 10-1 and 10-2, and the polygon formed by each detection axial force F causes slight deformation.

In the case where the number of turns N = 2 of the fastening point P and the axial force F are set to 70 (%) of the target axial force Fe (F = 0.7Fe), as shown in FIG. 15 (B), each fastening point P (= P1) Each detection axial force F of-P8) is obtained.

When setting the number of times N = 3 of the fastening point P and the axial force F to 100 (%) of the target axial force Fe (F = Fe), as shown in FIG. 15 (C), each fastening point P (= P1 to Each detection axial force F of P8) is obtained, and can reach | attain the target axial force Fe.

<Effect of Example>

(1) Since the appropriate fastening condition is automatically selected from the fastening condition information, it is not necessary to force the operator to manage the fastening condition, and the burden on the worker can be reduced from the fastening condition setting. It is possible to avoid the setting of fastening conditions depending on the experience or intuition of the operator and to automate them, and to prevent complicated work by written instructions, input errors by written instructions, and fastening misses.

(2) Since this fastening condition can be provided to the controller 16-4 separately from the server 16-5, general operations such as fastening the entire bolt with the same torque can be avoided. It is possible to realize a precise fastening result. The high-precision torque management provided by the fastening condition information can be performed, and fastening by the different torque (tau) to each bolt which is a fastening object can be reliably and efficiently performed. It is possible to realize a highly accurate seal construction management far exceeding the management relying on the individuality and intuition of the operator.

(3) Automation, high precision, simplicity, and high efficiency of seal construction can be realized by computer processing using fastening tool that can be fastened and managed, and highly reliable seal construction that does not depend on operator's experience or intuition can be realized. can do.

[Other Embodiments]

(1) In the above embodiment, the detection axial force of each axial force sensor 26-1, 26-2 ... 26-n for detecting the axial force of the bolt 6 to which the output torque T is applied from the fastening tool 14 is applied. It is good also as a structure which increases or decreases the torque value (tau) by using it. In short, in the seal construction management method, the step of detecting the axial force of the bolt 6 to which the output torque T is applied from the tightening tool 14, the torque value τ or the output torque T is increased or decreased in accordance with each detected axial force. It is good also as a construction management method containing the process to make it.

(2) Although the controller 16-4 and the server 16-5 are described as separate devices in the above embodiments and examples, the controller 16-4 may have the function of the server 16-5. do. That is, you may comprise the controller 16-4 and the server 16-5 integrally.

(3) The controller 16-4 may use a portable information terminal such as a smartphone.

(4) Although the above embodiment and example show an example in which the controller 16-4 and the server 16-5 are set to one fastening tool 14, the controller ( 16-4 and the server 16-5 may be set, and the single server 16-5 may be provided in the some controller 16-4.

As described above, the most preferred embodiments and examples of the present invention have been described. The present invention is not limited to the above description. Various modifications and changes are possible to those skilled in the art based on the spirit of the invention described in the claims or disclosed in the forms or examples for carrying out the invention. It goes without saying that such modifications and changes are included in the scope of the present invention.

Industrial availability

The seal construction management method, seal construction management apparatus, seal construction management program, and seal construction management system of the present invention are automated, high precision, simplified, and seal construction by processing information using a computer using a tightening tool capable of tightening management. High-efficiency can be realized, and highly reliable seal construction can be performed without depending on the operator's experience and intuition, which is advantageous.

2-1: seal construction management device
2-2: Seal Construction Management System
2-3: seal construction management device
2-4: Seal Construction Management System
4: seal construction department
6: bolt
8: nuts
10-1, 10-2: Flange
12: gasket
14: fastening tool
16-1, 16-2, 16-3: control unit
16-4: Controller
16-5: Server
18 grip
20: device body
22: socket
24: trigger switch
26-1, 26-2. 26-n: Axial force sensor
28: first function
30: second function
32: third function
34: fastening condition setting unit
36: cable
38: front panel
40: input operation unit
42: display unit
44: communication medium
46 processing unit
48: input operation unit
50: monitor
52: control unit
54: motor
56: torque sensor
58: rotation axis
60: processor
62: memory
64: input / output unit
68: communication unit
72: Barcode Reader
74: external memory
76-1: Green Lamp
76-2: Red Lamp
78-1: Temporary Memory Area
78-2: storage area
80: flange information
82: gasket information
84: worker information
86: conclusion information
88: fastening condition table
90-1, 90-2: Torque value table
92: Processor
94: memory
96: input / output unit (I / O)
98: communication unit
100: external memory
102: touch panel
104: line information
106: flange information
108: gasket information book
110: bolt information
112: fastening condition information

Claims (11)

As a seal construction management method in which a plurality of fastening points are set on a flange sandwiching a gasket, and fastened with bolts and nuts at each fastening point,
Calculating or selecting a torque value applied to the bolt or the nut according to the circulation number of the fastening point or the fastening point;
Setting the torque value to a fastening tool;
Sealing management method comprising the step of changing the output torque of the fastening tool stepwise or continuously in accordance with the number of circulation or the fastening point. The method of claim 1,
Further, the seal construction management method comprising the step of detecting the cycle number or the fastening point of the fastening tool. The method of claim 1,
Further, the seal construction management method comprising the step of setting the loop number or the fastening point of the fastening point in the fastening tool. The method of claim 2,
Detecting the axial force of the bolt;
And detecting the cycle number or the fastening point of the fastening tool by using the detected change information of the axial force and the information identifying the bolt. As a seal construction management apparatus which a plurality of fastening points are set in the flange which sandwiched the gasket, and provided with a bolt and a nut in each fastening point,
Calculate or select the torque value applied to the bolt or the nut according to the number of fastening points or the fastening point, and set the torque value to the fastening tool, stepwise or continuously according to the number of fastening or the fastening point. The seal construction management apparatus provided with the control means which changes the output torque of the said fastening tool. The method of claim 5,
And a detection means for detecting the cycle number or the fastening point of the fastening point of the fastening tool. The method of claim 5,
And a setting means for setting the circulation number or the fastening point of the fastening point in the fastening tool. The method according to any one of claims 5 to 7,
And the control means is installed in the fastening tool or is installed separately from the fastening tool and connected by wire or wirelessly. The method of claim 6,
The detecting means includes an axial force sensor for detecting the axial force of the bolt,
And the circulating number of the fastening tool or the fastening point of the fastening tool is detected using the change information of the axial force detected by the axial force sensor and the information identifying the bolt. As seal construction management program to let a computer run,
A function of calculating or selecting the number of rotations of the plurality of fastening points set on the flange sandwiched by the gasket or the torque value applied to the bolt or nut according to the fastening points;
A function of setting the torque value to a fastening tool;
A seal construction management program for realizing, by the computer, a function of changing the output torque of the fastening tool stepwise or continuously in accordance with the circulation number or the fastening point. A seal construction management system in which a plurality of fastening points are set on a flange sandwiching a gasket, and bolts and nuts are fastened to each fastening point.
A fastening tool capable of controlling the output torque applied to the bolt or nut stepwise or continuously;
Connected to the fastening tool by wire or wirelessly, calculating or selecting a torque value applied to the bolt or the nut according to the number of times of fastening or the fastening point, and setting the torque value to the fastening tool, And a controller for changing the output torque of the fastening tool stepwise or continuously in accordance with the number of circulations or the fastening point.

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