TWI796460B - Sealing construction management method, sealing construction management device, sealing construction management program, sealing construction management system - Google Patents

Abstract

A sealing construction management method is to set a plurality of locking positions on the flange with gaskets sandwiched therein, and set bolts and nuts at each locking position to lock. The aforementioned sealing construction management method can be performed by the following steps To realize the flange connection with high locking accuracy: use the locking tool with the first locking torque value to lock the aforementioned bolt and the aforementioned nut; detect the axial force of the aforementioned bolt; use the detected aforementioned axial force, To calculate or select the torque coefficient of the aforementioned bolt; and set the second tightening torque value calculated or selected by using the aforementioned torque coefficient to the aforementioned locking tool for each locking position of the aforementioned bolt.

Description

Sealing construction management method, sealing construction management device, sealing construction management program, sealing construction management system

field of invention

The present invention relates to a management technology of sealing construction used in flange locking of connecting pipes, valves, pumps, etc.

Background of the invention

Flanges with gaskets sandwiched therein are used for pipe connection or pump connection to pipes. The flange is fastened by locking bolts and nuts at multiple locking points on the peripheral side. To tighten the bolts and nuts, use manual locking tools such as torque wrenches, or electric screw locking tools.

In the locking of the flange with bolts and nuts like this, the locking process is performed with a specified torque value at all locking points, and the axial force acting on the bolt must be locked without deviation. tight. Therefore, it becomes important to manage the locking state of the bolt and the nut by the locking tool.

Examples of tightening management methods include the torque method to manage the tightening torque applied to the bolt, the method of measuring the extension of the bolt with an ultrasonic axial force meter to manage the axial force, and the method of stretching the bolt to the target axis. A method such as a bolt tensioner (stretching method) that tightens the bolt while managing the axial force to lock the nut in place.

Regarding the locking management of such a flange, there is known a method in which a detector electrically detects the rotational speed or torque of the output shaft of the bolt, and decomposes the detected value into values corresponding to the elapsed time of locking. The rotation speed and torque value at each moment can be used to calculate the power value of each micro-time, or the rotation speed equivalent of the power wrench can be increased or decreased instantaneously in response to the state of the locking fluctuation load, so as to make each micro-time The output shaft power of is approximate to the output torque (for example, Patent Document 1). Also, there is known a method of calculating the predicted axial force by using a relational expression (for example, Patent Document 2). The above-mentioned relational expression is the axial force when the locking of the screw member is completed and the axial force after a predetermined time has elapsed since the completion. The ratio is expressed as a function of the time required for locking. There is known a method for detecting an axial force of a bolt provided with a locking flange and performing a locking operation when the axial force of the bolt is smaller than a set value (for example, Patent Document 3).

prior art literature patent documents

Patent Document 1: Japanese Patent Application Publication No. Sho 53-047959

Patent Document 2: Japanese Patent No. 5724595

Patent Document 3: Japanese Patent Laid-Open No. 61-142082

Summary of the invention

However, in the flange connection where the gasket is sandwiched, it is necessary to equalize the locking axial force of all the bolts and nuts, thereby maintaining the flanges parallel to each other. exist In a flange connection in which a plurality of bolts and nuts are fastened together, if the axial force acting on the bolts deviates, an inclination will occur between the flanges. It becomes the state of so-called uneven locking. In such a non-uniform locking state, there are problems such as the generation of gaps in the pipes connected by the flanges, or the reduction of the sealing function caused by the gasket between the flanges.

In addition, although the tightening management by the torque method is to manage the tightening torque given by the tightening of the bolt and nut, the proportional coefficient between the tightening torque and the axial force acting on the bolt, that is, the torque coefficient will be targeted. The axial force of each bolt varies due to the influence of the friction of the flange or the nut. Therefore, even if the tightening torque is calculated from the necessary tightening force at the time of tightening, there will still be an axial force acting on the bolt at each locked position of the flange due to the difference in the torque coefficient. The subject of deviation.

In the locking management using the ultrasonic axial force meter, the axial force is measured after the bolt is tightened, and retightening or retightening is performed to make the axial force uniform, which may cause work accidents. The subject of increased time or homework time. In the bolt-to-flange tightening operation, one bolt is tightened multiple times while changing the tightening torque value. Therefore, if the tightening torque value is adjusted so that the target axial force is achieved each time, the operation Hours can get huge. In addition, since retightening or retightening of a bolt is affected by the loosening of other bolts due to the influence of elastic interaction, the adjustment of the axial force after locking will increase the working load.

In the tightening management performed by the bolt tensioner, there is a problem that a dedicated tool is required, which requires cost and work time, or that an extra length of the bolt is required to stretch the bolt. In addition, oil pressure is applied to the bolt axial force, and the nut is located on the fastened body such as the bolt, and then the locking can be completed by removing the oil pressure, but when the oil pressure is removed, the nut supporting surface will be deformed to sink into the surface of the fastened body, which is lower Axial force exerted by hydraulic pressure. To make up for this, the initial axial force can be set higher, but if the strength of the fastening body is insufficient, there is a risk of damage, or there is a problem that it is difficult to estimate the reduced axial force.

In the sealing construction of the flange with the gasket sandwiched, although any of these locking managements are used, the locking or post-locking is performed by the torque value set in the locking tool. However, in order to make the axial force of the tightened bolts uniform, a lot of time, labor and cost are required. The inventors of this application adjusted the torque coefficient that can be used to calculate the locking torque value based on the knowledge that the deviation of the axial force caused by these locking management methods is affected by the difference in the state of each bolt. Lock management is the subject of the invention.

Regarding such a problem, Patent Documents 1 to 3 neither disclose nor suggest, and the configurations disclosed in these documents cannot solve such a problem.

Therefore, an object of the present invention is to achieve flange connection with high locking accuracy while fastening bolts and nuts with less work man-hours and less work time in view of the above-mentioned problems.

Another object of the present invention is to apply a locking torque corresponding to the state of each bolt and nut, thereby realizing stabilization of the locked state of the flange and locking under a necessary axial force.

There is no disclosure or suggestion of such a problem, and the configurations disclosed in Patent Document 1 to Patent Document 3 cannot solve such a problem.

In order to achieve the above object, one aspect of the sealing construction management method of the present invention is to set a plurality of locking points on the flange with the gasket sandwiched therein, and to set bolts and nuts at each locking point to lock them. The sealing construction management method includes the following steps: locking the aforementioned bolt and the aforementioned nut with a locking tool with a set first locking torque value; detecting the axial force of the aforementioned bolt; using the detected aforementioned axial force to perform Calculation or selection of the torque coefficient of the aforementioned bolt; and setting the second tightening torque value calculated or selected using the aforementioned torque coefficient to the aforementioned locking tool for each tightening position of the aforementioned bolt.

In the above-mentioned seal construction management method, the following steps may also be included: comparing the detected axial force of the aforementioned bolt with the target axial force, the set axial force or a prescribed threshold, and performing the aforementioned torque according to the comparison result. Calculation or selection of coefficients.

In the above-mentioned sealing construction management method, the following steps may be further included: detecting the number of visits of the aforementioned locking tool or any one or both of the aforementioned locking positions; Or continuously change the value of the set axial force or locking torque set to the aforementioned locking tool.

In the above sealing construction management method, the following step may be further included: calculating or selecting the first locking torque value by using the set axial force set for each locking step and the torque coefficient selected in advance .

In order to achieve the above object, one aspect of the sealing construction management device of the present invention is to set a plurality of locking rings on the flange that has been clamped with gaskets. The seal construction management device is equipped with bolts and nuts at each locking position to lock. It has: a setting component, which sets the aforementioned locking position, the number of times of locking tours, and the locking torque value in the locking tool; A component for obtaining the axial force of the aforementioned bolt; and a control component for obtaining the axial force of the aforementioned bolt locked by the aforementioned locking tool with the first tightening torque value set, and using the axial force to calculate or select the axial force of the aforementioned bolt The torque coefficient is to set the second tightening torque value calculated or selected by using the torque coefficient for each of the aforementioned tightening positions of the aforementioned bolts to the aforementioned locking tool.

In the above sealing construction management device, the control component may also compare the detected axial force of the bolt with the target axial force, the set axial force or a prescribed threshold, and calculate or select the aforementioned torque according to the comparison result coefficient.

In the above-mentioned sealing construction management device, it may further include: a detection component to detect either or both of the number of visits of the aforementioned locking tool or the aforementioned locking position, and the aforementioned control unit is responsive to the number of tours or the aforementioned locking position Instead, the value of the set axial force or the locking torque set to the aforementioned locking tool is varied stepwise or continuously.

In order to achieve the above object, an aspect of the sealing construction management program of the present invention is a sealing construction management program implemented by a computer, and the following function is realized by the aforementioned computer: setting the first locking torque value at Locking tool, the aforementioned locking tool is used to lock the bolts and nuts installed at the locking place of the flange that has been clamped with gaskets; obtain the detection results of the axial force of the aforementioned bolts locked by the aforementioned locking tool ; Utilize the detected aforementioned axial force to calculate or select the torque coefficient of the aforementioned bolt; and according to the aforementioned For each of the aforementioned tightening positions of the bolts, the second tightening torque value calculated or selected using the aforementioned torque coefficient is set to the aforementioned locking tool.

In order to achieve the above object, one aspect of the sealing construction management system of the present invention is to set a plurality of locking positions on the flange with gaskets sandwiched therein, and to set bolts and nuts at each locking position to lock The sealing construction management system is provided with: a locking tool, which can control the torque value applied to the aforementioned bolt or the aforementioned nut; a sensor, which detects the axial force of the aforementioned bolt; and a controller, which sets the first locking torque value in the lock The tightening tool calculates or selects the torque coefficient of the aforementioned bolt by using the aforementioned axial force detected by the aforementioned sensor, and applies the second tightening torque calculated or selected by using the aforementioned torque coefficient for each locking position of the aforementioned bolt. The value is set in the aforementioned locking tool.

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

(1) Calculate the torque coefficient of each bolt in the tightening step, and perform the tightening at the corrected tightening torque, thereby eliminating or reducing the effect of axial force adjustment such as retightening after locking. resulting workload.

(2) By tightening the nut while correcting the torque coefficient of each bolt, it is possible to suppress the influence of insufficient or excessive tightening force on other bolts in the step-by-step tightening process.

(3) Find out the torque coefficient of each bolt, and perform locking with a locking torque value corresponding to the state of the locking place, so as to suppress the deviation of the axial force between the bolts.

And, other purposes, features and advantages of the present invention, by It should become clearer by referring to the attached drawings and each embodiment.

2, 30, 130: sealing construction management device

4: Sealing construction department

6: Bolt

8: Nut

10-1, 10-2: flange

12: Gasket

14, 132: locking tool

16, 134: control components

18. 18-1~18-n: Axial force sensor

20: Device body

22: handle

24, 138: set seat

26: Trigger switch

32: Locking condition setting part

34: Get components

40: Locking instruction information table

50:Seal construction management system

52: Controller

54:Server

55: cable

56: Front panel part

58, 66: input operation part

60: display part

62: Communication media

64, 110, 144: processing department

68: screen

70: Control Department

72: motor

74:Torque sensor

76: axis of rotation

80, 112: Processor

82, 114, 146: storage department

84, 116: Input and output part (I/O)

86, 118, 142: Ministry of Communications

88: Barcode reader

90, 122: external memory

92-1: Green lamps

92-2: red lamps

94-1: Temporary storage area

94-2: Storage area

100: Flange Information

102: Gasket information

104: Operator Information

106:Locking result information

120: Touch panel

136: gear unit

140: Information acquisition unit

148:Information reminder department

F: axial force

Fx: set axial force

Fα, Fα1, Fα2, Fβ, Fβ1, Fβ2: locking results

k1, k2: torque coefficient

N1, N2: friction

P, P1~P8: locking position (locking position)

S: number of rounds

S1~S8, S11~S17, S31~S47: steps

T, T1, T2: Locking torque value

T’: correction torque value

Fig. 1 is a diagram showing a configuration example of a sealing construction management device according to a first embodiment.

Fig. 2 is a diagram showing an example of a state of force acting on a bolt when flanges are tightened.

3A is a diagram showing an example of detected axial force in the tightening step before torque coefficient correction, and B is a diagram showing an example of detected axial force in the tightening step after torque coefficient correction.

Fig. 4 is a flowchart showing an example of sealing construction management processing.

Fig. 5 is a diagram showing a configuration example of a sealing construction management device according to a second embodiment.

Fig. 6 is a diagram showing an example of a locking sequence.

Fig. 7 is a diagram showing an example of a locking instruction information table.

FIG. 8 is a diagram showing an example of axial force detection results.

FIG. 9 is a graph showing an example of a calculation result of a torque coefficient.

Fig. 10 is a flowchart showing an example of sealing construction management processing.

Fig. 11 is a diagram showing a configuration example of a sealing construction management system according to a third embodiment.

A of FIG. 12 is a diagram showing a configuration example of a locking tool, and B is a diagram showing an example of an axial force sensor.

A of FIG. 13 is a diagram showing a configuration example of a controller, and B is a diagram showing a configuration example of a storage unit.

Fig. 14 is a diagram showing an example of the internal configuration of a server.

Fig. 15 is a diagram showing a display example of locking results.

Fig. 16 is a sequence diagram showing an example of seal construction management.

Fig. 17 is a diagram showing a configuration example of a sealing construction management device according to a fourth embodiment.

FIG. 18 is a diagram showing a comparative example.

form for carrying out the invention

[First Embodiment]

Fig. 1 shows a configuration example of a sealing construction management device according to a first embodiment. The configuration shown in FIG. 1 is an example, and the present invention is not limited to such a configuration.

<Sealing construction management device 2>

This sealing construction management device 2 performs locking processing and locking management of a plurality of bolts 6 and nuts 8 in the sealing construction part 4. pump etc. For example, as shown in FIG. 1, the sealing construction part 4 is an example of the locking object, and a gasket 12 is sandwiched between the flanges 10-1, 10-2 of the joint assembly, and is set on the flanges 10-1, 10. Bolts 6 and nuts 8 are respectively arranged at a plurality of locking positions on the peripheral side of -2. In this flange 10-1, 10-2, for example, 8 locking places are set. That is, in the flanges 10-1, 10-2, for example, eight bolts 6 and nuts 8 are locked at intervals of an angle θ=45[°] at equal intervals. The gasket 12 is made of a rigid resin material, and is in contact with at least the facing surfaces of the flanges 10-1, 10-2, and is formed in a shape that does not overlap the flow path formed on the protrusion of the piping or the like. The flow path of the connected object other than the edge. And, spacer 12 It is an example of a sealing component. By locking the bolt 6 and the nut 8, a crimped state is formed in the flange 10-1, 10-2, thereby preventing fluid, etc. from flowing out from around the connecting part of the connected object. .

In terms of sealing construction management, the sealing construction management device 2 will manage the locking of the bolts 6 and nuts 8, thereby making the gasket 12 between the flanges 10-1 and 10-2 uniform or nearly uniform. pressed state.

The sealing construction management device 2 has, for example, a locking tool 14 and a control unit 16 . The tightening tool 14 is an example of a unit for applying an output torque T to the bolt 6 or the nut 8, and includes a nut tightener having a function such as setting or adjusting the output torque (tightening torque T) (nutrunner) or power tools. This locking tool 14 is carried by the operation of the operator who performs the locking process, for example, there is a tool that can perform ON/OFF operations when locking, or it is installed or held in a place not shown in the figure. Tools such as the arm of the product assembly device.

The locking tool 14 has: a handle 22, which makes it possible to maintain and move towards a prescribed position, for example, the device body 20; a sleeve 24, which is fitted into the locking object, that is, the nut 8, to apply a locking torque; and a trigger switch 26, During the locking step, the locking torque T is turned on/off through the socket 24 . In the step of tightening the bolt 6 and the nut 8 , the on/off of the trigger switch 26 is switched by an operator's finger, a mechanical arm not shown, or other switching circuits.

Also, in the locking step, for example, the operator or the assembly device will lock the locking position set at the sealing construction part 4, that is, the position where the bolt 6 and the nut 8 are arranged, in a set order. Tool 14 is configured for on/off operation of trigger switch 26 .

The control unit 16 is an example of a unit that outputs an operation instruction of the tightening tool 14 and performs adjustment processing of the tightening torque value T1 set to the tightening tool 14 based on the tightened state of the bolt 6 and the nut 8 . The control unit 16 is formed by, for example, a computer, and can be integrated with the locking tool 14, or can be an independent machine, and is connected to the locking tool 14 by wire or wirelessly. Also, the control assembly 16 is connected with the axial force sensors 18-1, 18-2, ..., 18-n (n is a natural number) to obtain the value of the axial force caused by the locking or by Changes in axial force caused by locking, etc.

The axial force sensors 18-1, 18-2, 18-3, ..., 18-n are an example of components that detect the axial force acting on the bolt 6 or the nut 8, and are installed on the Any one of the bolts 6 or the nuts 8 at all locking positions. In addition, the axial force sensors 18-1, 18-2, 18-3, . . . , 18-n can also be installed, for example, when axial force is measured.

<Function of control unit 16>

The control unit 16 provided with the sealing construction management device 2 having such a configuration has, for example, the following functions.

a. The function of calculating or selecting the tightening torque value T1 assigned to the bolt 6 or the nut 8 according to the set torque coefficient k1 and the number of times S of the locking place.

b. The function of setting the tightening torque value T1 in the tightening tool 14 .

c. The function of changing the tightening torque value T1 of the locking tool 14 in stages or continuously in response to the number of cycles S (STEP). The number of rounds S is the number of units that go around the locking positions of the bolt 6 and the nut 8, that is, the positions P1, P2, . . . , Pn.

d. Obtain the detection of the axial force acting on the bolt 6 or nut 8 by locking As a result, the function of correcting the torque coefficient k2 corresponding to the locking point P is calculated.

e. The function of calculating or selecting the corrected locking torque value T2 by using the calculated corrected torque coefficient k2.

The tightening torque value T1 of the function a is calculated using, for example, the value of the target axial force. The tightening torque value T1 is calculated as a level value required to reach the target axial force F based on the tightening conditions including the washer 12 . In calculating the tightening torque value T, the following formula is used.

T=kFd/n...(1)

Here, d is the outer diameter of the bolt 6 to be tightened, and n is the number of bolts 6 or nuts 8 provided on the seal construction portion 4 . In addition, k is a torque coefficient representing a proportional coefficient between the locking torque T and the locking force (axial force F).

For example, as shown in FIG. 2 , the axial force F of the bolt 6 and the nut 8 is affected by the flange 10 - 1 or 10 - 2 and the bolt 6 or nut 8 relative to the tightening torque T applied from the locking tool 14 . The frictional force N1 of the bearing surface, the frictional force N2 of the threaded surface, etc. In addition, the locking axial force F is affected by the surface roughness of the thread and so on. That is to say, according to the different locking positions, even if the same locking torque value T1 is used for locking, the axial force F acting on the bolt 6 and the nut 8 will still be different. The torque coefficient k set in consideration of such an influence becomes a different value for each tightening point P of the bolt 6 or the nut 8 . In the calculation of the tightening torque value T1 at the start of sealing construction, for example, the torque coefficient k1 for all the tightened points P is set to 0.2 as a constant value.

In function b, the calculated torque value T1 will be set in the locking tool 14 as the control of the locking tool 14 by the control unit 16 Information.

In function c, the control component 16 changes the tightening torque value T1 generated by the tightening tool 14 in stages or continuously in response to the number of tightening rounds S to perform locking. Thereby, the axial force of the bolt 6 or the nut 8 at each locking point P reaches the target axial force F.

In the function d, the control assembly 16 obtains the axial force F detected from the axial force sensors 18-1, 18-2, . . . , 18-n corresponding to the locking point P, for example. The detected axial force F may be obtained every time the locking is performed, or may be obtained when the predetermined number of rounds S of locking is performed. In addition, the control unit 16 calculates the corrected torque coefficient k2 for each bolt 6 or nut 8 using, for example, Equation (1). In the calculation of the corrected torque coefficient k2, the set torque value T1 and the detected axial force F are used.

In the function e, the control unit 16 uses the correction torque coefficient k2 and the target axial force to calculate the corrected tightening torque value T2 according to the formula (1), and set it in the tightening tool 14 .

<Results of seal construction management>

Fig. 3 shows an example of detected axial force in the locking step.

The control unit 16 manages, for example, the axial force detected at the locking point P, and notifies the locking operator or the work manager of the management result through a display unit (not shown).

A of FIG. 3 is an example of an axial force detection result in the case where the torque coefficient is set to a constant value k1=0.2 and the lock is performed, for example. In this locking result Fα, for example, the detected axial force at the locking point [1]~[5], [8] will have the same value, compared to this, the value of the locking result Fα1 at the locking point [7] will get smaller, Also, the value of the locking result Fα2 in the locking point [6] becomes larger than that of other locking points. That is, even if the tightening is performed with the same tightening torque value T1, it is clear that the torque coefficient k1 is not an appropriate value for the states of the locked positions [7] and [6].

In addition, B of FIG. 3 is an example of the axial force detection result in the case of setting the correction torque coefficient k2 corresponding to each locking point and performing locking. In this locking result Fβ, the values of the locking results Fβ1 and Fβ2 at the locking places [7] and [6] are equal to the values of the detected axial forces at other locking places. Thereby, variation in the axial force acting on the flanges 10-1, 10-2 as a whole can be suppressed.

<Sealing construction management processing>

Fig. 4 shows an example of sealing construction management processing. The processing procedure and processing content shown in FIG. 4 are only an example of the sealing construction management method or the sealing construction management program of the present invention, and the present invention is not limited to such contents.

In terms of seal construction management processing, the control unit 16 will use the target axial force or set axial force and the first torque coefficient k1 to calculate or select the first locking torque value T1 (S1), and the first locking torque value T1 will be selected (S1). The torque value T1 is set in the tightening tool 14 (S2). The target axial force is the target value of the axial force F acting on the bolt 6 or the nut 8 when the locking is completed. In the case where the tightening torque value T1 for the bolt 6 and nut 8 is changed in stages according to the number of rounds S, the set axial force will be the value of the axial force F set when calculating the tightening torque value T1 , can be set as x[%] of the target axial force in response to, for example, the number of rounds S. In addition, the tightening torque value T1 can also be set by selecting, for example, a value stored in a database in advance.

The control assembly 16 is controlled from the axial force sensors 18-1, 18-2, . . . , 18-n Obtain the detection result of the axial force (S3), and compare the detection result with the target axial force or the set axial force (S4). The comparison of the axial force is carried out for each locking position. And, when there is a difference between the detection result and the target axial force or the set axial force ("Yes (YES)" in S5), the value of the detected axial force F is used to calculate the second torque coefficient, that is, the corrected torque coefficient k2 (S6). Also, when there is no difference between the detection result and the target axial force or the set axial force ("No (NO)" in S5), it is judged that the torque coefficient k1 corresponding to the state of the locked position has been set, and the first torque coefficient k1 is maintained. Torque coefficient k1 (S7).

The control unit 16 calculates the tightening torque values T1 and T2 according to each tightening position by using a respective torque coefficient and sets them in the tightening tool 14 ( S8 ), and then proceeds to the next tightening sequence.

In addition, in this seal construction management process, although it is shown that the detected axial force is compared with the target axial force or the set axial force, and the correction of the torque coefficient is performed when there is a difference in the value, it does not Not limited to this. The second torque coefficient k2 can also be calculated from the axial force detected at all the locking points.

In addition, the comparison processing of the detected axial force is not limited to, for example, the target axial force or the set axial force, and may be compared with a predetermined threshold value set in advance.

<Effect of the first embodiment>

According to such a configuration, the following effects can be obtained.

(1) From the relationship between the detection results detected through the locking of the bolt 6 and the nut 8 and the locking torque value set in the locking tool 14, find out the corresponding state of each locking position. Torque coefficient, which can be used in sealing applications It is easy to correct the tightening torque value during the process.

(2) The deviation of the axial force F acting on the bolt 6 or the nut 8 relative to the target axial force or the set axial force can be suppressed by correcting the tightening torque value through finding out the torque coefficient, and It is possible to reduce the workload of retightening and shorten the working time.

(3) Find the torque coefficient in the locking step to correct the locking torque value, so that the deviation of the axial force acting on the contact surfaces of the flanges 10-1, 10-2 and the gasket 12 will disappear, This can reduce the possibility of wrinkles, strain, etc. occurring on some of these contact surfaces, and can improve the tightness of the gasket or the airtightness of the connected pipes and the like.

(4) The deviation of the axial force of locking is suppressed between the plurality of bolts 6 and nuts 8 fixing the support flanges 10-1, 10-2, thereby reducing the possibility of loosening of locking, and can The reliability of the connection of the flanges 10-1 and 10-2 or the sealing of the gasket 12 is improved.

(5) According to the result of locking, the state of each locking place is automatically judged, and the locking torque value corresponding to its state is calculated, so that it is possible to carry out the operation with the embossing without relying on the operator's experience or intuition. Sealing construction management that matches the states of flanges 10-1, 10-2, gaskets 12, bolts 6, and nuts 8.

[Second Embodiment]

Fig. 5 shows a configuration example of a sealing construction management device according to a second embodiment. The configuration shown in FIG. 5 is an example, and the present invention is not limited to such a configuration.

<Sealing construction management device 30>

For example, as shown in FIG. 5 , this sealing construction management device 30 includes a locking tool 14 , a control unit 16 , and a locking condition setting unit 32 . The control assembly 16 is equipped with an acquisition assembly 34, and the aforementioned acquisition assembly 34 can receive axial force sensors 18-1, 18-2, . . . , 18- The detection result of n. The acquisition component 34 may include, for example, a communication component wirelessly connected to the axial force sensors 18-1, 18-2, . The processing function of calculation processing or display processing of results.

In addition to the function of setting the tightening torque values T1 and T2 set by the control unit 16 in the tightening tool 14, the tightening condition setting unit 32 also has functions such as grasping the tightening position or the number of rounds during the tightening operation, and Instruction display or notification is carried out to perform the sealing construction management function for the operator.

The locking condition setting unit 32 may be integrally formed with, for example, the control unit 16, or may be an independent unit connected by wire or wirelessly.

In addition, the locking condition setting unit 32 may include, for example, a calculation processing function of the locking torque values T1 and T2.

The locking tool 14 or the sealing construction part 4 should just have the same structure as that of 1st Embodiment, Therefore The description is abbreviate|omitted.

<Locking sequence and number of rounds>

Fig. 6 shows an example of the tightening sequence of bolts and nuts.

In the locking operation of the bolt 6 and the nut 8, for example, as shown by the arrow a of A in Figure 6, it can be toured in the positions P1, P2..., Pn in sequence, or the arrow b of B in Figure 6 Shown, in order to change the lock on the diameter direction of flange 10-1, 10-2 Tight position, the so-called "diagonal locking" locking sequence, iterates through positions P1, P2..., Pn for locking. That is to say, the positions P1, P2..., Pn can be continuously locked according to the sequence of numbers, and a predetermined number of locked positions can also be regularly skipped to make a tour. Therefore, the number of rounds S is not limited to the count value of the rounds performed on the positions P1, P2 . . .

In the seal construction management of this embodiment, for example, a locking sequence according to the flange joint locking method (JIS B 2251) of Japanese Industrial Standards (JIS) is adopted. Moreover, in this embodiment, for example, the case where the number of the bolt 6 provided in the flange 10-1, 10-2 is n=8 [number] is shown. Therefore, in this locking process, in the so-called "temporary locking" stage from the start of locking to the specified number of rounds (S), the flanges are locked at positions P1, P2..., Pn. 10-1, 10-2 change the locking position on the diameter direction, that is, the locking of so-called "diagonal locking" (B in Fig. 6). In addition, in the locking process, after the number of rounds (S) of "temporary locking" is completed, as the so-called "main locking" stage, it is carried out in sequence from P2 to Pn (A in Figure 6). lock tight.

Furthermore, the number of cycles (STEP) or locking sequence of "temporary locking" or "main locking" can also be set differently according to the number of bolts 6 arranged on the flanges 10-1, 10-2. value.

<Locking instruction information sheet 40>

Fig. 7 is an example of a table showing locking instruction information.

This locking instruction information table 40 is an example of a table storing the processing contents of sealing construction management, and is stored in the control unit 16, for example. In this locking instruction information table 40, for example, each indicating the number of tours is saved. Information on the "implementation content" of "STEP" or information on the locked "sequence", etc. The "STEP" of the locking instruction information table 40 shown in Figure 7 is determined according to the number of bolts 6 to be locked, for example, the number of times of visits S=10 [times], that is, for 8 [branches] bolts 6 and bolts The cap 8 is divided into 10 [times] to lock in a prescribed order. In this locking instruction, for example, the torque coefficient is calculated in STEP3 and STEP7, and the correction of the torque coefficient according to the state of the locked place is performed.

The information of "implementation details" includes, for example, storage of a locking torque value or a value of a torque coefficient, an instruction to receive a detected axial force, an instruction to calculate a torque coefficient, and the like.

The method of tightening the bolt 6 and the nut 8 is stored in the "procedure" information.

<Measurement result of axial force>

Fig. 8 shows an example of detection results of axial force.

An information table is provided in the control unit 16, and the aforementioned information table includes the values of the axial force F at each locking position obtained from the axial force sensors 18-1, 18-2, . . . , 18-n. The information table shown in FIG. 8 is to calculate, for example, the detection of the axial force in the number of rounds (S) of the correction value of the torque coefficient k and the calculation result of the locking torque value or the torque coefficient, and stores the values set in the locking tool 14. Tightening torque value T1, set axial force Fx acting on the bolt 6 or nut 8, detected axial force F, torque coefficient k1 before correction, corrected torque coefficient k2, corrected torque value T', etc.

The tightening torque value T1 is a value calculated from the above-mentioned formula (1) using the set axial force Fx and the torque coefficient k1 set at this number of rounds. For example, in terms of sealing construction management, the control component 16 will compare the set axial force Fx with the axial force F when locking with the locking torque value T1, and in these When the values do not coincide or are not within a predetermined range with respect to the set axial force Fx, the corrected torque coefficient k2 is calculated.

Furthermore, the control unit 16 sets the correction torque value T' set to the locking tool 14 in the next number of rounds based on the comparison result of the axial force.

In addition, the information table may be created, for example, for every number of times of tightening rounds, or may be created only for the number of rounds (S) for correcting the torque coefficient.

<Calculation result of torque coefficient>

FIG. 9 shows an example of the calculation results of the torque coefficient.

For example, as shown in FIG. 9 , the control unit 16 generates a torque coefficient display screen associated with a locked position at the trigger of the torque coefficient calculation process. This torque coefficient display screen may be displayed on, for example, a display unit of the control unit 16 not shown, or may be displayed on a terminal device for a manager using communication or external memory.

By creating such a torque coefficient display screen, an operator or an operation manager can easily grasp the deviation state of the torque coefficient for each locking point.

<Sealing construction management processing>

Fig. 10 shows an example of sealing construction management processing. The processing procedure and processing content shown in FIG. 10 are just an example of the sealing construction management method or the sealing construction management program of the present invention, and the present invention is not limited to such contents.

In the sealing construction management process, the initial setting of the control unit 16 is performed (S11), and the setting of the locking tool 14 is performed (S12). In these setting steps, it includes the calculation of the locking torque value T1 of each cycle through the set torque coefficient k1 or the set axial force Fx, or through the locking bar Input processing of the locking tool 14 by the tool setting unit 32 and the like.

The control assembly 16 will obtain the detection result F (S13) of the axial force detected by each axial force sensor 18-1, 18-2, ..., 18-n, and confirm the locking point P and the number of tours (S ) (S14). In the confirmation process, for example, each locking point P is identified by the numbers of the eight bolts 6 located at eight of the locking points P1 to P8 and the change of the detected axial force. The number of rounds (S) is, for example, 8 bolts 6 tightened as a unit, and is specified by the number of rounds of the same bolt 6 tightened once.

The control unit 16 will judge whether the number of tours (S) has become the calculation step of the torque coefficient (S15). And calculation of the corrected torque coefficient k2 for each bolt 6 (S16). In addition, the control unit 16 correlates the calculated correction torque coefficient k2 for each bolt 6 (S17), and uses the correlated bolt coefficient k2 in the calculation of the next tightening torque value T.

In the case where the control assembly 16 has judged that the number of visits (S) is not the calculation step of the torque coefficient ("No" in S15), it returns to S12, counts the number of visits (S) and sets the axis corresponding to the number of visits (S) Force F or locking torque value for locking processing.

<Effect of the second embodiment>

According to such a configuration, the following effects can be obtained.

(1) Set the locking torque value corresponding to the number of rounds (S), and monitor the locking state by the detected axial force F, and correct the locking torque value, so that each locking position can be prevented The deviation of the locked state.

(2) Continuously or step by step according to the number of rounds (S) or locking The torque coefficient k is corrected by changing the tightening torque step by step, so that the axial force F of the bolt 6 can conform to the set axial force Fx, and reliable sealing construction can be realized.

(3) The tour of the locking place can not only be locked according to the sequence of the bolt number, but also can be locked in various forms skipping the bolt number. No matter which kind of locking tour is used, it can quickly perform proper sealing construction.

[third embodiment]

Fig. 11 shows a configuration example of a sealing construction management system according to a third embodiment. The configuration shown in FIG. 11 is an example, and the present invention is not limited to such a configuration. In FIG. 11 , the same reference numerals are attached to the same configurations as those in FIGS. 1 and 5 .

The sealing construction management system 50 has a locking tool 14 , a controller 52 , and a server 54 . Since the locking tool 14 has the same configuration as already mentioned, its description is omitted.

The controller 52 is connected with the locking tool 14 by a cable 55 . In addition, the controller 52 and the locking tool 14 can also be connected through, for example, Wi-Fi or infrared communication. The controller 52 is, for example, a computer that sets the tightening torque value T for the tightening tool 14, and has the functions of a control unit for managing the locking state or a locking condition setting unit, and can be operated independently or connected with the server 54 . In this controller 52 , for example, a plurality of input operation units 58 and display units 60 are provided on the front panel unit 56 .

The controller 52 realizes the following functions or effects through computer processing.

a. Calculate or The torque value T applied to the bolt 6 or the nut 8 is selected.

b. Set the torque value T for the locking tool 14 .

c. Change the output torque T of the locking tool 14 in stages or continuously in response to the number of visits (S) or the locking point P.

d. Obtain locking management information from the server 54 .

e. Acquisition of flange information of flanges 10-1 and 10-2.

f. Obtaining the gasket information of the gasket 12.

g. Comparison of gasket information.

h. Select the locking condition from the locking condition information and input the locking tool 14 .

i. Obtain the locking results from the axial force sensors 18-1, 18-2, . . . 18-n.

j. Prompt for locking result information.

k. Correct the torque coefficient and locking torque according to the locking result.

l. A reminder of the evaluation information of the locking result.

The controller 52 is wired or wirelessly connected with the server 54 through the communication medium 62 indicated by the dotted line. The server 54 is a computer that supports the information processing of the controller 52 or manages the information processing, and only a personal computer may be used, for example. This server 54 has, for example, a processing unit 64 , an input operation unit 66 and a screen 68 .

<Locking tool 14>

A of FIG. 12 shows a configuration example of the locking tool 14 .

This tightening tool 14 has, for example, a control unit 70 , a motor 72 , and a torque sensor 74 .

The control unit 70 is equipped with a computer and a motor drive unit, and the controller 52 can provide control information such as locking torque values T1 and T2. The motor 72 is driven in response to control information such as the locking torque values T1, T2, and can supply the driving current to the motor 72 when the trigger switch 26 is turned on. The rotation of the motor 72 is transmitted to the socket 24 installed on the rotating shaft 76 , and a tightening torque T is applied to the nut 8 fitted in the socket 24 . The rotating shaft 76 may also be equipped with a gear mechanism, and transmits the rotational force of the motor 72 to the socket 24 at a desired gear ratio.

The torque sensor 74 detects a locking torque value T from the motor 72 or the rotating shaft 76 , and the detected torque value is received to the control unit 70 . The torque sensor 74 may be arranged outside the tightening tool 14 as long as it can detect the tightening torque of the bolt 6 and the nut 8 .

B of FIG. 12 shows an example of the bolt 6 provided with the axial force sensor 18 . As long as the axial force sensor 18 is installed on each bolt 6 and detects the axial force F applied to each bolt 6 , the tightening torque value of the locking tool 14 and the increase or decrease of the tightening torque value can be measured. As the axial force sensor 18, for example, a strain sensor may be used.

<Controller 52>

A of FIG. 13 is a configuration example of the display controller 52 .

The controller 52 is a control unit of the locking tool 14 and is an example of a sealing construction management device for sealing and locking.

This controller 52 is constituted by, for example, a computer, and has a processor 80 , a storage unit 82 , an input/output unit (I/O) 84 , an input operation unit 58 , a communication unit 86 , and a display unit 60 .

The processor 80 is an example of a processing unit, and performs information processing such as an OS (Operating System) located in the storage unit 82 or a sealing construction management program. This information processing includes the following control: acquisition of locking condition information from the server 54, input of locking conditions including the tightening torque value T to the locking tool 14, and tightening torque value T from the locking tool 14. Acquisition of value detection results, monitoring and evaluation of locking status, display of evaluation results, output of locking result information, etc.

The storage unit 82 is used for storing OS, sealing construction management program, locking condition information, detection information, etc., and has ROM (Read Only Memory, Read Only Memory) and RAM (Random Access Memory, Random Access Memory) . In this storage unit 82, only a storage element capable of holding storage contents may be used.

The I/O 84 is controlled by the processor 80 and is used to control the input and output of information. In this I/O 84, for example, a barcode reader 88 or a detachable external memory 90 can also be connected as an external device. The barcode reader 88 is an example of an information acquisition unit. The external memory 90 is a fetching memory for recording information (log information), and for example, a USB (Universal Serial Bus) memory may be used.

The input operation unit 58 includes a key switch, a touch sensor, and the like, and can be used for input timing of input information, output timing of output information, mode switching, and the like.

The communication unit 86 is controlled by the processor 80 and can be used for wireless connection or Internet connection with external machines such as the server 54 .

The display unit 60 is controlled by the processor 80, and is used for inputting information or inputting An example of a prompt component that displays information. The display unit 60 may also be equipped with display components such as a green lamp 92-1 and a red lamp 92-2 as status information, and as long as the green lamp 92-1 is turned on when it is normal, the red lamp is turned on when it is abnormal. 92-2 lights up.

B of FIG. 13 shows an example of storage contents of the storage unit 82 .

The storage unit 82 has a temporary storage area 94-1 and a storage area 94-2. In the temporary storage area 94 - 1 , for example, flange information 100 , gasket information 102 , operator information 104 , locking result information 106 acquired from the locking tool 14 , etc. of the construction object are temporarily stored.

A database such as the locking instruction information table 40 is constructed in the storage area 94-2.

<server 54>

FIG. 14 shows an example of the configuration of the server 54 .

The server 54 is a supporting device of the controller 52 and is an example of a presentation unit that records information. In the server 54, for example, a processor 112, a storage unit 114, an input/output unit (I/O) 116, and a communication unit 118 are provided as the processing unit 110, and the aforementioned input operation unit 66 and screen 68 can be connected. .

The processor 112 performs information processing such as an OS or a sealing construction management program located in the storage unit 114 . This information processing includes processing of providing locking condition information to the controller 52 , acquiring information indicating a locking result from the controller 52 , presenting the locking result information, and the like.

The storage unit 114 is used for storing OS, sealing construction management program, locking condition information, record information, etc., and has ROM and RAM. A storage device such as a hard disk or a semiconductor memory capable of holding storage contents may be used as the storage unit 114 .

The I/O 116 is controlled by the processor 112 and is used to control input and output of information. To this I/O 116, for example, an external memory 122 is connected as an external device. The communication part 118 is used for connection with the controller 52 etc. by wireless, for example.

The communication unit 118 is controlled by the processor 112 and is used for wireless connection or Internet connection between the server 54 and external devices such as the locking tool 14 and the controller 52 .

The input operation unit 66 can be used not only for an input operation for inputting information, but also for a timing of outputting information, a mode switching operation, and the like by the input operation.

The screen 68 is an example of an information presentation part and a display part, and is used for displaying the locking instruction information table 40, locking results, and the like, for example. The screen display portion of the screen 68 may include a touch panel 120 instead of the input operation portion 66 to input input information corresponding to display information.

<lock result>

Fig. 15 shows an example of locking results.

For example, as shown in A of FIG. 15 , on the display unit 60 of the controller 52 or the screen 68 of the server 54, a screen showing the locking results of the locking positions P1, P2..., Pn of the sealing construction part 4 is displayed. . The picture of this locking result is the detection result (Fig. The combination of the information of B) and the locking position of the locking tool 14 or the information of the number of rounds (S) etc. to generate of.

On the screen of the locking result, for example, for each locking point, the target axial force of locking and the locking force for each number of rounds (S) are displayed. That is to say, in this locking result screen, together with the deviation of the axial force between the locked places, the change of the locking force for each number of rounds (S) is also displayed.

Also, for example, as shown in B of FIG. 15 , in the temporary storage area 94-1 of the controller 52 or the storage unit 114 of the server 54, detection data are stored as detection results. That is, the axial force F of the bolt 6 for each number of rounds (S).

This detection result shows the locking results of STEP1~6, for example, and the detection data will increase through the further steps of locking. In addition, in this sealing construction management, for example, similar to the second embodiment, correction processing of the torque coefficient is performed based on the detection result of STEP3. And, after the correction of the torque coefficient, the detection results of the axial force of each bolt in the stage of STEP6 will become almost the same value as the number of rounds of locking (S) increases. This shows how the surfaces of the flanges 10-1 and 10-2 are sealed with an axial force without deviation.

<Processing sequence of sealing construction management>

FIG. 16 shows a processing sequence of sealing construction management performed by the sealing construction management system 50 .

In the sealing construction process, initial setting is performed by the locking tool 14 (S31), and initial setting is performed by the controller 52 (S32). After this initial setting, connect the controller 52 with the server 54, and the controller 52 will receive the locking condition information including the torque coefficient k1 etc. provided by the server 54 (S33). The controller 52 receives the locking condition information by obtaining the locking indication information table 40 .

The controller 52 having acquired the locking condition information sets the locking conditions corresponding to the pre-selected flanges 10-1, 10-2 and gasket 12 (S34). In addition, the controller 52 performs the setting of the number of tours S or the locking position P (S35), or calculates the locking torque value T1 using the torque coefficient k1 or the set axial force Fx (S36). When candidates for the tightening torque value T1 are stored in advance, it is only necessary to select one of the stored tightening torque values T1.

After the preparation process for locking, the controller 52 sets the locking torque value T1 to the locking tool 14 (S37).

Then, the construction personnel will use the locking tool 14 to apply a locking torque to the bolt 6 or the nut 8 at the locking position to perform locking (S38). Each axial force sensor 18-1, 18-2, ..., 18-n will detect the axial force of the bolt 6 at each locking point P (S39), and the detected axial force F will be received to the controller 52 (S40).

The controller 52 will use each detected axial force to determine whether the locking operation is completed or not based on the number of rounds S of the locking point P or the information of the locking point P (S41). That is to say, the controller 52 will determine which one of the locking positions P1-P8 is the locking position P1-P8 according to the number of the eight bolts 6 and the change of the axial force, for example, when the locking position P=8. The controller 52 takes the locking of a plurality of bolts 6 selected from the locking positions P1 to P8 as a unit, and sets the number of tours of the selected bolts once as the number of tours S=1. Also, as mentioned above, the number of rounds S can be defined as S=0 to n.

When the controller 52 has judged that the locking operation has not been completed Next ("No" in S41), it is judged whether it is the calculation step (number of rounds) of the torque coefficient k (S42). When it is a calculation step (YES in S42), the controller 52 judges whether the detected axial force is different from the set axial force (S43).

If it is not the calculation step of the torque coefficient k ("No" in S42), and if there is no difference between the detected axial force and the set axial force ("No" in S43), return to S35 to continue the locking operation .

At this time, in the controller 52, for example, the number of rounds (S) is counted up, and the tightening torque value T corresponding to the next round number is calculated. In this way, the output torque T is changed and set stepwise or continuously in response to the locking point P or the number of cycles S.

When the controller 52 has judged that the detected axial force is different from the set axial force ("Yes" in S43), as a correction process for the locking torque value, it will calculate the corrected torque coefficient k2 using the detection result of the axial force (S44 ). Then, the controller 52 sets a new locking condition including the corrected torque coefficient k2 (S45), and returns to S35 to continue the locking process.

When the controller 52 judges that the locking is completed based on the count value of the number of rounds S ("Yes" in S41), the locking is completed (S46), and a locking completion instruction is input to the locking tool 14 to complete the locking. lock tight. The completion of this locking only needs to be prompted by, for example, the screen 68 . The controller 52 notifies the server 54 of the locking result information. Then, the display of locking result information will be performed in the server 54 (S47).

Furthermore, although the controller 52 judges the count of the number of rounds (S) as whether the locking is completed or not, it is not limited thereto. The controller 52 can also control, for example, from the axial force sensors 18-1, 18-2, . . . , 18-n As a result of the detection, if it is judged that the axial force has deviation, the target axial force has not been reached, or it is not within the specified range, the re-tightening process is further repeated.

<Effect of the third embodiment>

According to such a configuration, the following effects can be obtained.

(1) Since the locking conditions such as the torque coefficient k and the locking torque value T can be automatically selected, it is not necessary to force the operator to manage the locking conditions, and the burden on the operator can be reduced by setting the locking conditions. It is possible to avoid the setting of locking conditions that depend on the operator's experience or intuition, and to prevent setting errors or locking errors.

(2) Since this locking condition can be individually and specifically supplied from the servo 54 to the controller 52, fine locking results can be achieved. Highly accurate sealing construction management such as correction of the torque coefficient k and setting of the locking torque value can be performed based on the detection result of the axial force.

(3) With locking tools that can be used for locking management and information processing using computers, automation, high precision, simplification, and high efficiency of sealing construction can be realized, and it can be carried out without relying on operators Highly reliable sealing construction based on experience or intuition.

[Fourth Embodiment]

Fig. 17 shows an example of a sealing construction management device according to a fourth embodiment.

The sealing construction management device 130 has a locking tool 132 and a control component 134 . The locking tool 132 is, for example, a torque wrench or a hand-held locking machine, and has a gear unit 136 capable of generating a set locking torque value.

In this gear unit 136, a socket 138 coupled to, for example, the nut 8 is provided. In addition, the gear unit 136 has an information acquisition unit 140, and the aforementioned information acquisition unit 140 can acquire identification information and locking position information of the bolt 6 or the nut 8. The information obtaining unit 140 is composed of, for example, a receiving antenna, a receiving unit, a signal converting unit, a transmitting unit, and a transmitting antenna. In addition, the information acquisition unit 140 receives unillustrated tag information provided on the bolt 6 or the nut 8 , and obtains identification information such as ID (Identification) from the tag information. And, the identification information is converted into a transmission signal by the signal conversion unit, and sent to the control unit 134 side through the transmission unit. The transmission of the transmission signal is performed using, for example, short-range wireless communication.

The control component 134 has, for example, a communication unit 142 , a processing unit 144 , a storage unit 146 , and an information presentation unit 148 .

The communication unit 142 communicates with the information obtaining unit 140 disposed on the locking tool 132 to receive identification information of the bolt 6 or the nut 8 .

The processing unit 144 not only transmits and receives identification information and the like to and from the information acquiring unit 140 through the communication unit 142 , but also performs setting processing of a locking torque value, calculation processing of a torque coefficient, and the like.

The storage unit 146 saves, for example, the identification information of the bolt 6 or the nut 8, the locking position information, and in addition to the calculation information of the locking sequence, the locking torque value, and the calculation information of the torque coefficient. The axial force information received by the axial force sensors 18-1, 18-2, .

The information display part 148 is an example of a component that displays the following information, in addition to displaying the tightening torque value information or torque coefficient information set in the tightening tool 132 In addition to information, corrected torque coefficient information, detected axial force information, etc., it will also display the indication information of the locking position during the locking step.

The detection processing of the axial force, the calculation processing of the torque coefficient, and the correction processing of the locking torque value in the locking step are as described in the above-mentioned embodiments, and therefore description thereof will be omitted.

<Effect of the fourth embodiment>

According to such a configuration, the following effects can be expected.

(1) Locking can be performed at a tightening torque value corresponding to each locking point, and the locking point can be easily managed by using the identification information of the bolt 6 or the nut 8 .

(2) Through the management of the locking place based on the identification information of the bolt 6 or the nut 8, even if there is an error in the operation sequence, etc., it is still possible to display the guidance through the information prompt part 148 , to induce workers to perform appropriate work, so the reliability of sealing construction management can be improved.

[comparative example]

Fig. 18 is a comparative example showing the sealing construction management process of the flange.

In the sealing construction management process shown in FIG. 18, for example, the process of tightening the eight bolts 6 and the nuts 8 to the flanges 10-1 and 10-2 is performed similarly to the above-mentioned second and third embodiments. . In this tightening process, a value of 0.2 is maintained as the preset torque coefficient k in the calculation process of the tightening torque value T set in the tightening tool 14 . And, the tightening torque value T is increased stepwise in accordance with the number of rounds.

As shown in A of Figure 18, it can be seen from the results of the locking process that the locking position The axial force at position P6 always has a larger axial force F than other locking positions. In addition, in STEP6, which is the number of rounds, only the locked position P6 reaches the target axial force, while other locked positions do not reach the target axial force.

As shown in B of FIG. 18 , the axial force detected by the axial force sensors 18-1, 18-2, ... 18-8 becomes between the bolts 6 with larger deviations in the stage of STEP6. result. After comparing these axial force values, the maximum deviation is about 28[%], and the average value is 14[%]. In the case of such a deviation, since the force does not act equally between the flanges 10-1 and 10-2, only a part of the locking position acts, that is, the so-called uneven locking, Or doubts about loosening of other bolts 6 and nuts 8. Therefore, in the tightening process, for example, retightening or retightening is performed while monitoring the axial force of all the bolts 6 . In the locking of the bolts 6 and the nuts 8 to the flanges 10-1, 10-2, as described in the subject of the invention, due to the influence of the elastic interaction, it will be affected by the loosening of other bolts, so Adjusting the axial force after locking will increase the working load.

On the other hand, as described in the present invention, the correction process of the torque coefficient corresponding to the locked position is performed in the locking step, so that the influence caused by the deviation of the locked state between the bolts 6 does not occur, or Since this influence can be suppressed, it becomes possible to perform efficient sealing construction management with a reduced workload and a stable locked state.

[other embodiments]

(1) In the above-mentioned embodiment, although the case where the hand-held locking machine provided with the processor etc. were used as the locking tool 14 was shown, it is not limited to this. The locking tool 14 can also be used, for example, to manually set the locking Torque torque wrench. In addition, as long as the locking tool 14 is a large-scale assembly device, and has a locking arm portion for locking the bolts, and can grasp the locking position of the product or detect the axial force caused by the locking That's it.

(2) In the above embodiments, although it is shown that an axial force sensor is provided on the bolt itself as a component for detecting the axial force acting on the locking part, it is not limited thereto. In the seal construction management process, for example, for the bolt 6 that has been tightened, the axial force can be detected by a detection device such as an ultrasonic sensor, and the torque coefficient can be calculated by using the detection result.

(3) The controller 52 can also use a handheld information terminal such as a smart phone.

(4) In the above-mentioned embodiment, although the example in which the controller 52 and the server 54 are connected to one locking tool 14 was shown, it is not limited to this. The controller 52 and the server 54 may also be connected to a plurality of locking tools 14 , and a single server 54 may be provided among the plurality of controllers 52 .

As described above, the best mode or examples of the present invention have been described. The present invention is not limited to the invention described above. Those who have ordinary knowledge in the technical field of the present invention can make various modifications or changes according to the gist of the invention described in the scope of claims, or disclosed in the form or embodiment for implementing the invention. Such modifications and changes are of course also included in the scope of the present invention.

Industrial availability

The sealing construction management method, the sealing construction management device, the sealing construction management program, and the sealing construction management system of the present invention can be further utilized. The locking tool that performs locking management and uses the information processing of the computer to use the axial force detected in the locking step to correct the torque coefficient, so that it can be set to correspond to the state of the locking place It is beneficial to stabilize the locked state of the flange and perform the locking process under the necessary axial force.

2: Sealed construction management device

4: Sealing construction department

10-1, 10-2: flange

12: Gasket

14:Locking tool

16: Control components

18-1~18-n: Axial force sensor

20: Device body

22: handle

24: Set seat

26: Trigger switch

F: axial force

k1: torque coefficient

T1: Locking torque value

Claims (10)

A sealing construction management method is to set a plurality of locking points on the flange with gaskets sandwiched therein, and each locking point is equipped with bolts and nuts, and in each of the plurality of rounds, the plurality of bolts and A plurality of nuts are locked, and the aforementioned sealing construction management method is characterized in that it includes the following steps: in one of the aforementioned plurality of tours, locking with a locking tool with a set first tightening torque value The aforementioned bolts and the aforementioned nuts provided in each of the aforementioned plurality of locking positions; detecting the respective axial force of each bolt in the aforementioned tour or the aforementioned plurality of bolts after the aforementioned plurality of bolts are locked; using the aforementioned plurality of The aforementioned axial force detected separately by each bolt is used to calculate or select the respective torque coefficients of the aforementioned plurality of bolts; Torque coefficient to calculate or select the second tightening torque value of the aforementioned bolts in each of the plurality of aforementioned locking positions, and for each of the aforementioned locking positions, divide each locking position of the aforementioned plurality of locking positions The second tightening torque value of the provided bolt is set to the tightening tool. The sealing construction management method according to claim 1, which includes the following steps: comparing the detected axial force of each of the plurality of bolts with the target axial force, the set axial force or the prescribed threshold, and based on the comparison As a result, the calculation or selection of the aforementioned torque coefficient is performed. Such as the sealing construction management method of claim item 1, which further includes It includes the following steps: detecting either or both of the number of tours of the aforementioned locking tool or the aforementioned locking position; Set shaft force or lock torque value variation. The sealing construction management method as claimed in claim 2, which further includes the following steps: detecting the number of tours of the aforementioned locking tool or any one or both of the aforementioned locking positions; and staged according to the number of tours or the locking position The value of the set axial force or locking torque set to the aforementioned locking tool is varied continuously or continuously. The sealing construction management method according to any one of claims 1 to 4, which further includes the following steps: using the set axial force set according to each locking step and the torque coefficient selected in advance to perform the aforementioned first lock Calculation or selection of tightening torque value. A sealing construction management device, in which a plurality of locking positions are set on a flange with gaskets sandwiched therein, and each locking position is equipped with bolts and nuts, and the plurality of locking positions are locked in each of the plurality of tours. Bolts and a plurality of nuts, the sealing construction management device is characterized by: setting components, setting the locking torque value in the locking tool, and grasping, displaying and notifying the number of rounds of the locking place or locking; obtaining the components , obtain the axial force of the aforementioned bolt; and the control assembly, in one of the aforementioned plurality of rounds, obtain the front torque locked by the aforementioned locking tool with the first tightening torque value set. The axial force of the aforementioned bolts is used to calculate or select the torque coefficient of the aforementioned bolts. In other tours after the aforementioned tours, the torque coefficient calculated or selected using the aforementioned torque coefficients will be used for each of the aforementioned locking positions of the aforementioned bolts. The second tightening torque value is set to the aforementioned tightening tool. The sealing construction management device according to claim 6, wherein the aforementioned control component compares the detected axial force of the aforementioned bolt with the target axial force, set axial force or a prescribed threshold, and calculates or selects according to the comparison result aforementioned torque coefficient. The sealing construction management device as claimed in claim 6 or 7, which is further equipped with: a detection component that detects either or both of the number of visits of the aforementioned locking tool or the aforementioned locking position, and the aforementioned control unit responds to the number of visits or the aforementioned At the locking point, the setting axial force or locking torque value set in the aforementioned locking tool can be changed step by step or continuously. A sealing construction management program, which is a sealing construction management program implemented by a computer, is characterized in that the computer is used to realize the following functions: in each tour of a plurality of times, a plurality of bolts and a plurality of nuts are Locking, set the first locking torque value in the locking tool, the aforementioned locking tool is to lock the bolts and nuts installed at the locking place of the flange with the gasket clamped; the following test results are obtained , the aforementioned test result is in one of the aforementioned multiple rounds of rounds, before setting the aforementioned first locking torque value. Each of the bolts locked by the aforementioned locking tool or the respective axial force of the aforementioned plurality of bolts installed at the aforementioned locking place after the aforementioned plurality of bolts are locked; The aforementioned axial force is used to calculate or select the respective torque coefficients of the aforementioned plurality of bolts; and in other rounds after the aforementioned rounds, use the aforementioned torque coefficients to calculate or select the aforementioned The second tightening torque value of the aforementioned bolts in each of the plurality of locking positions, and for each of the aforementioned locking positions, the aforementioned second tightening torque value of the aforementioned bolts in each of the aforementioned plurality of locking positions 2 The tightening torque value is set in the aforementioned locking tool. A sealing construction management system, in which a plurality of locking positions are set on a flange with gaskets sandwiched therein, and each locking position is equipped with bolts and nuts, and in each of the plurality of tours, the plurality of bolts and A plurality of nuts are locked, and the above-mentioned sealing construction management system is characterized in that it has: a locking tool that can control the torque value applied to the aforementioned bolts or the aforementioned nuts; a sensor that detects the axial force of the aforementioned bolts; and a controller , set the first tightening torque value in the locking tool, use the aforementioned axial force detected by the aforementioned sensor to calculate or select the respective torque coefficients of the aforementioned plurality of bolts, and the aforementioned axial force is obtained during the aforementioned plurality of cycles In a certain tour, each of the bolts locked by the aforementioned locking tool with the aforementioned first tightening torque value or the aforementioned plurality of bolts locked are installed at the aforementioned locking position respectively. The aforementioned axial force, in other tours after the aforementioned tour, according to each locking position of the aforementioned bolt, using the aforementioned torque The coefficient is used to calculate or select the second tightening torque value of the aforementioned bolts in each of the aforementioned plurality of locking positions, and for each of the aforementioned locking positions, the The aforementioned second tightening torque value of the aforementioned bolt is set to the aforementioned locking tool.

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