TW202004122A - Device and method for measuring gap between flanges, and program - Google Patents

Abstract

This device measures a gap between flanges fastened to each other with a gasket therebetween by a plurality of bolts and nuts, the device for measuring a gap between flanges comprising: a light emission unit which, by means of minute light emission, generates a minute optical image on the flanges with a flange gap therebetween; an image capturing unit that acquires an image including the minute optical image; and a measurement unit that extracts minute optical image data and flange edge data from the image and measures the gap between the flanges or a gap difference. Accordingly, the present invention can facilitate positioning for measurement with respect to a circumferential surface of the flange and the measuring of a gap between the flanges, and improve measurement accuracy.

Description

Measuring device, program and method between flanges

Field of invention The invention relates to a measurement technique of a gap or a gap drop between flanges which are clamped by gaskets and fastened by bolts and nuts.

Background of the invention Between the pipeline and the pipeline such as a pump, a gasket is sandwiched between the flange formed at the end of the pipeline, and a plurality of bolts and nuts mounted on the periphery of the flange are used for fastening. In the fastening of such pipes and the like, it is necessary to fix the gaskets existing between the flanges evenly to maintain the flanges parallel while maintaining the flanges. Therefore, the measurement and management of the gap between the flanges are indispensable. In the measurement of the gap between such members, there is known a jig having a gauge base spanning between the members, and inserting a wedge-shaped gauge member supported by the scale shaft between the members The gap converts the amount of insertion of the gauge member into the rotation of the dial to measure the gap between the members (for example, Patent Document 1). With respect to such mechanical measurement, a method of measuring a gap or a fall by taking an imaging image of slit light with an imaging element is known (for example, Patent Document 2 and Patent Document 3). Prior technical literature Patent Literature

Patent Literature 1: Japanese Patent Laid-Open No. 2015-59755 Patent Document 2: Japanese Patent Laid-Open No. 2003-315020 Patent Document 3: Japanese Patent Laid-Open No. 2015-45571

Summary of the invention Problems to be solved by invention In the fastening of pipes and the like using flanges, it is indispensable that the central axis of each flange into which the gasket is clamped is uniform, and the locking axial force of the bolts is equally given to maintain the gap between the flanges Parallelism. If the central axis of each flange is inconsistent, the circumferential surface of each flange will shift, resulting in a gap or drop. If there is a difference in axial force between a plurality of bolts, the gap between the flanges will be changed due to the influence of elastic interactions such as the rigidity of the flange or the gasket. This change in the gap between the flanges is a state where so-called uneven locking occurs. The problem is that these phenomena depend on the skill level and carelessness of the builder. If left unchecked, the sealing accuracy between the flanges will be reduced. However, in the measurement of the gap between the members inserted into the wedge-shaped gauge member (Patent Document 1), it is necessary to prepare a gauge member corresponding to the flange that is the object of measurement. Instead, the gap measurement using the gap gauge becomes inferior. The problem is that the flange used for fastening between pipelines often uses a circular type. It is very troublesome to locate the gap and the gap drop on such a circumferential surface, and the positioning accuracy causes significant measurement accuracy. influences. In this kind of sealing construction between flanges, a large number of bolts must be tightened on one flange, and it must be carried out multiple times continuously. Therefore, the problem is that it is expected that the time required for the measurement of the gap between the flanges is a short time, and if it takes more time to perform a plurality of measurement operations, the construction time becomes longer. The problem is that if the builder neglects the gap measurement, it will also cause a decrease in the sealing accuracy.

Regarding such requirements or problems, there is no disclosure or suggestion in Patent Documents 1 to 3, nor is there any disclosure or suggestion to solve the constitution and the like.

Therefore, in view of the above-mentioned problems, the object of the present invention is to improve the measurement accuracy together with the positioning of the measurement position on the peripheral surface of the flange and the ease of measurement between the flanges. Means to solve the problem

In order to achieve the above object, one aspect of the inter-flange measurement device according to the present invention is an inter-flange measurement device that measures the inter-flange between the gaskets and is fastened with a plurality of bolts and nuts, and Equipped with: a light irradiating part, which uses fine light to generate a thin light image on the flange in such a way as to enclose the gap between the flanges; an imaging part, which obtains an image containing the thin light image; and a measuring part, from The image extracts fine light image data and flange edge data to measure the gap or gap drop between the flanges. In this inter-flange measurement device, the light irradiating portion may generate the fine light image at a measurement position associated with the position of the bolt or the bolt locking position. In this inter-flange measurement device, an information prompting section may be further provided. The information prompting section is associated with the identification information of the flange, the position of the bolt, or the bolt locking position to prompt the measurement result of the gap or gap drop . In this inter-flange measurement device, a housing portion may be provided. The housing portion is positioned at a measurement position of the flange by inserting the positioning guide portion into the gap between the flanges. The positioning guide portion includes: abutting A portion, sandwiching the measurement position and abutting against the peripheral surface of the flange; and a guide protrusion, formed in a part of the abutment portion and inserted into the gap, by the abutment portion and the guide protrusion , And the housing portion is positioned at the measurement position. In this inter-flange measurement device, it is sufficient if the housing portion includes a grip portion and an imaging switch, and the imaging switch can be operated together with the grip of the grip portion. The measurement device between the flanges may further include a communication part that sends out measurement data, and provides the measurement data to an information terminal connected to the communication part by wired or wireless means.

In order to achieve the above purpose, one aspect of the program according to the present invention is a program implemented by a computer, and the following functions are realized by the aforementioned computer: irradiating fine light from the housing portion to entrap the gap between the flanges A thin light image is generated on the flange; an image including the thin light image is obtained; and fine light image data and flange edge data are extracted from the image to measure the gap or gap drop between the flanges. In this program, the above-mentioned computer can be used to realize the following function: it is associated with the identification information of the position of the flange, the bolt or the bolt locking position to prompt the measurement result of the clearance or the clearance drop.

In order to achieve the above object, one aspect of the inter-flange measurement method according to the present invention is an inter-flange measurement method for measuring the inter-flange fastening with a plurality of bolts and nuts sandwiching the gasket, and It includes the following steps: Position the housing part at the measurement position between the flanges; A thin light image is generated on the flange in such a way that the gap between the flanges is entrained by the fine light irradiation of the light irradiation section; Obtaining an image including the aforementioned fine light image through the photographing unit; and The measurement section extracts fine light image data and flange edge data from the image to measure the gap or gap drop between the flanges. In this method for measuring between flanges, the following steps may also be included: establishing correlation with the identification information of the position of the flange, the bolt, or the bolt locking position to prompt the measurement result of the gap or gap drop. Invention effect

According to the present invention, any of the following effects can be obtained. (1) The housing portion of the measurement device can be easily and accurately positioned with respect to the measurement position of the gap between the flanges, and the gap or the gap drop can be measured easily and quickly. (2) The sealing operation with respect to the bolt tightening of the flange allows the measurement of the gap or gap drop to be carried out with less effort and high accuracy in the measurement operation. (3) The reliability of the sealing operation can be improved.

In addition, other objects, features, and advantages of the present invention should be made clearer by referring to the attached drawings and the embodiments.

Forms for carrying out the invention [First Embodiment] >Measuring device between flanges 2> FIG. 1 is a diagram showing a configuration example of an inter-flange measurement device according to the first embodiment. The configuration shown in FIG. 1 is just an example, and the present invention is not limited to the invention of such a configuration. This inter-flange measurement device 2 is an example of a measurement mechanism used to manage the locked state of the sealing construction portion 4 such as connecting a plurality of pipes to each other, or piping and valves, piping and pumps. As shown in, for example, A in FIG. 1, the sealing construction part 4 is sandwiched between the flanges 6-1 and 6-2, which are locking objects, on the plane set on the flanges 6-1, 6-2. Part of the locking place is locked by bolts 10 and nuts 12. That is, the gasket 8 is in a pressed state between the planes of the opposing flanges 6-1 and 6-2. The measuring device 2 between the flanges measures the width of the gap 14 between the opposing surfaces of the flanges 6-1, 6-2 sandwiching the gasket 8 to the seal construction part 4, or indicates the flanges 6-1, 6-2 The length of the gap drop relative to the displacement of the opposing surfaces in the parallel direction.

The measuring device 2 between the flanges includes, for example, a housing portion 16 and a contact portion 18, the contact portion 18 is formed in the housing portion 16, and at least a part thereof is inserted into the gap 14 of the flanges 6-1, 6-2 . The contact portion 18 is formed, for example, so that the entire portion or front end portion of the insertion gap 14 is thinner than the gap 14. In addition, the housing portion 16 includes, for example, a light irradiating portion 20 that is a light source that irradiates light to the peripheral surfaces of the flanges 6-1, 6-2; an imaging portion 22 that takes in an image of the measurement position C1; and a measurement portion 24. Measure the width of the gap 14 or the gap drop using the image taken by the imaging unit 22. This measurement position C1 is set, for example, to be associated with the installation position of the bolt 10 or the nut 12 provided on the flanges 6-1, 6-2, or the locking position formed by the bolt 10 and the nut 12. That is, the inter-flange measuring device 2 measures the flanges 6-1, 6 at the locking positions of the bolts 10 and nuts 12 of the flanges 6-1, 6-2 or the positions affected by the locking -2 The size of the gap 14 or the size of the gap drop is to manage the locked state of the sealing construction part 4.

The contact portion 18 is an example of the positioning guide portion of the present invention, and the housing portion 16 is arranged for the measurement position C1. This contact portion 18 is provided with at least two contact arms 18-1 and 18-2 as shown in, for example, B in FIG. 1. The contact arms 18-1 and 18-2 have the same length La, for example, and protrude in the parallel direction from the housing portion 16 toward the measurement target. In addition, the two contact arms 18-1 and 18-2 are arranged along the circumferential surface of the flanges 6-1 and 6-2 in a direction in which the gap 14 can be inserted.

The light irradiation portion 20 of the inter-flange measurement device 2 irradiates light parallel to the direction in which the contact arms 18-1 and 18-2 protrude in a range sandwiched between the contact arms 18-1 and 18-2, for example. The light irradiation unit 20 is composed of, for example, laser light, infrared light, or other light sources, and by irradiating light directly to the measurement position C1 or slit light passing through a slit not shown, at least the gap 14 is entrained at 2 The peripheral surfaces of the flanges 6-1, 6-2 form thin light images (F1, F2) of a predetermined length (A in FIG. 1). The imaging unit 22 is, for example, arranged so as to be shifted in the direction of a predetermined arrangement angle θ with respect to the light irradiation direction of the light irradiation unit 20, and irradiates the flange 6-1, 6-2 or the gap 14 of the measurement position C1 Light image (F1, F2) intake. In this way, the inter-flange measurement device 2 can maintain the surface of the measurement position C1 of the flanges 6-1 and 6-2 from the light irradiation unit 20 by inserting the contact arms 18-1 and 18-2 into the gap 14 to maintain For example, a certain irradiation direction and irradiation distance Lb such as a vertical or near-vertical angle. This irradiation distance Lb is the distance to the light irradiation position of the flange surface, and is due to the curvature of the flange 6-1, 6-2, the width of the contact arms 18-1, 18-2, the contact arm 18-1, The contact position of 18-2 with the flange surface is determined. In addition, the imaging unit 22 may determine the imaging angle or the imaging distance Lc of the irradiated fine light image. The contact arms 18-1 and 18-2 are set to lengths according to the focal distance of the camera constituting the imaging unit 22 with respect to the measurement position C1, for example.

The measurement unit 24 is an example of a functional unit that performs, for example, image processing of image data taken in by the imaging unit 22 and measurement calculation processing of gaps or gap drops. In this inter-flange measurement device 2, the so-called light-cutting method is used as a means for measuring the gap or gap drop by the analytical calculation processing of the image, wherein the aforementioned image is a photograph of the measurement object by the irradiated light Obtained by the image formed.

Fig. 2 shows an example of the measurement process of the gap and the gap drop. The measurement unit 24 performs, for example, image processing, binarization processing on the captured image, extraction of feature points, and the like. This binarization process is an image process for extracting fine light images contained in the taken image, and as long as, for example, a comparison of shades according to light intensity etc. in the image or comparison of images before and after light irradiation Just deal with it.

<Gap measurement> The measurement unit 24 performs feature point extraction processing on the image obtained by extracting the fine light image as shown in, for example, A in FIG. 2. The measuring section 24 is for extracting, for example, data representing thin light images F1, F2 representing thin light images on the peripheral surfaces of the flanges 6-1, 6-2, or indicating the boundary between the flanges 6-1, 6-2 and the gap 14 The edge data Fx1, Fx2. The measurement unit 24 may perform the process of extracting feature points by the analysis process using the image data that has been subjected to the binarization process, or may also perform the image analysis process by the image taken from the imaging unit 22 To analyze and extract the data of the thin light images F1, F2 or the edge data Fx1, Fx2. For example, the edge data Fx1 and Fx2 may extract the ends of the data of the fine light images F1 and F2, or a part of the data of the fine light images F1 and F2 may be extracted as the ends. With this, the measurement section 24 extracts the straight portion immediately before bending as the edge data Fx1, Fx2 when the front end side of the data of the thin light images F1, F2 is bent by the light in the gap 14, for example That's it. Between the edge data Fx1 and Fx2, for example, there is a space portion G. This space portion G is in a state where the light irradiated from the light irradiating portion 20 is not reflected in the measurement position C1 or reflected in a direction that the imaging portion 22 cannot take in. That is, this space portion G indicates that the gap 14 exists between the flanges 6-1, 6-2, the position of the gap 14, and the like. In addition, the measurement unit 24 calculates the width of the gap 14 by performing gap analysis processing on the width W between the edge data Fx1 and Fx2 as, for example, gap measurement processing. In this gap analysis process, the width W of the gap 14 is calculated using, for example, a calculation algorithm that calculates the value of the irradiation distance Lb and the shooting distance Lc, and the arrangement angle θ of the light irradiation unit 20 and the shooting unit 22 law.

<Measurement of gap drop> The measurement section 24 is, for example, as shown in B of FIG. 2, for the data of the extracted thin light images F1 and F2 or the edge data Fx1 and Fx2 indicating the boundary between the flanges 6-1, 6-2 and the gap 14, To determine the presence or absence of displacement in the longitudinal direction, and measure the displacement H. The displacement in the longitudinal direction indicates the state in which the flange 6-1, 6-2 are offset in the front-rear direction at the measurement position C1 relative to the arrangement direction of the inter-flange measurement device 2, and the gap is generated. The amount of displacement captured in the image is the gap drop H between the flanges 6-1, 6-2. This displacement amount is, for example, the sum of the displacement amount h1 in the upward direction and the displacement amount h2 in the downward direction with respect to the reference axis assumed at the time of shooting. Since the flanges 6-1 and 6-2 have a circular shape, for example, the detection values of the displacements h1 and h2 continuously change along the circumferential direction of the flanges 6-1 and 6-2. When the measurement position C1 measures the circumferential surfaces on the opposite side of the flanges 6-1 and 6-2, the displacement amounts h1 and h2 may be reversed vertically.

As the gap drop measurement process, the measurement unit 24 calculates the displacement amounts h1 and h2 on the screen from the length between the edge data Fx1 and Fx2 or converts these into coordinate values, and uses the added irradiation distance Lb or shooting distance Lc, a gap analysis algorithm for the value of the arrangement angle θ of the light irradiation unit 20 and the imaging unit 22 to calculate the gap drop in the front-rear direction of the flanges 6-1, 6-2.

>Measurement and processing between flanges> Fig. 3 shows a processing example of the measurement between flanges. The processing content and processing sequence shown in FIG. 3 are examples of the inter-flange measurement method or the inter-flange measurement program of the present invention, but the present invention is not limited to such a configuration. In the measurement process between the flanges, the contact arms 18-1 and 18-2, which are positioning guides, are inserted into the gap 14 at the measurement position C1 of the flanges 6-1 and 6-2 (S1). With this, the arrangement position, light irradiation direction, irradiation angle, and imaging direction of the inter-flange measurement device 2 are stabilized in a predetermined state. The light irradiation part 20 is turned ON, and light irradiation is performed toward the measurement position C1 (S2), and a thin light image is formed on the peripheral surface of the entrapment gap 14 of the flanges 6-1, 6-2. Then, the image containing the fine light image formed at the measurement position C1 is captured by the imaging unit 22 (S3). As the analysis processing by the light-cutting method, the measurement unit 24 performs, for example, binarization processing or feature point extraction processing on the captured image, and adds the image intake from the value on the image Analysis processing such as conditions, and measuring the gap between the flanges and the gap drop (S4).

[Effects of the first embodiment] According to such a configuration, the following effects can be obtained. (1) By contacting the contact arms 18-1 and 18-2 with the flanges 6-1 and 6-2, the housing portion 16 can be easily and accurately positioned at the measurement position of the gap 14 between the flanges It can easily and quickly measure the gap or gap drop at the measurement position. (2) For the measurement work using measuring instruments such as rulers or vernier calipers, the gap or gap drop between the flanges can be calculated by analyzing the captured images, so that the skilled workers can be used In the case of an error such as degree or a recording error of the measurement result, the measurement accuracy is improved. (3) The reliability of gap management between flanges can be improved. (4) The working time of the measurement process of the gap and the gap drop can be shortened.

[Second Embodiment] >Construction of measuring device between flanges> 4 and 5 show a configuration example of the inter-flange measurement device of the second embodiment. The configurations shown in FIGS. 4 and 5 are only examples. As shown in, for example, A of FIG. 4, in this inter-flange measurement device 30, two contact pieces 34-1 and 34-2 are formed in parallel on the front surface side of the housing portion 32. Here, the contact pieces 34-1 and 34-2 are provided with narrow insertion pieces 36 in the width direction of the front end portion, for example. This insertion piece 36 is an example of the guide protrusion of the present invention. In addition, the positioning guide portion of the present invention is constituted by the contact pieces 34-1 and 34-2 and the insertion piece 36, and the insertion piece 36 is inserted into the gap 14 existing between the flanges 6-1 and 6-2. The housing portion 32 is positioned at the measurement position. The contact pieces 34-1 and 34-2 are formed so as to be detachable to the housing portion 32, for example. In addition, an operation portion 38 is provided on the back side of the housing portion 32. This operation portion 38 may be integrally formed in the housing portion 32, for example, or an independent operation component may be detachably constructed and provided on the rear portion of the housing portion 32. The operation part 38 is provided with a grip part 40 and a trigger switch 42 that is formed by, for example, a measurement operator and can transport the case 32, and the trigger switch 42 is formed on an end side of the grip part 40 And perform input operations such as measurement operations such as power-on, light irradiation, and photography.

As shown in, for example, B in FIG. 4, on the upper surface side of the measuring device 30 between the flanges, the information presentation portion 46 is formed on a part or all of the top surface of the housing portion 32. In addition to the display screen 48, the information presentation unit 46 may also include a display lamp (not shown). This display screen 48 may display, in addition to, for example, a display of an operation instruction screen for an operator, a selection or operation screen related to measurement processing, and an image captured by an imaging unit described later. In addition, the contact pieces 34-1 and 34-2 may be formed with, for example, abutting portions 37 that are in contact with the flange when the insertion piece 36 is inserted into the gap 14 of the flanges 6-1 and 6-2 6-1, 6-2 peripheral surface. The contact portion 37 may be formed in a planar shape in an orthogonal direction with respect to the protruding direction of the contact pieces 34-1 and 34-2, or may be formed as flanges 6-1 and 6-2 that fit into contact, for example The curved shape of the surrounding surface. For example, the contact pieces 34-1 and 34-2 may have a central portion opened at both ends to provide contact pieces 44A and 44B formed with a predetermined width in order to reduce weight or improve visibility during a measurement operation.

As shown in, for example, C of FIG. 4, the front surface side of the housing portion 32 is provided with an intake flange in addition to passing light between the contact pieces 34-1 and 34-2 that are parallel in the vertical direction. The measurement area of the image. The housing portion 32 includes, for example, a light emitting mechanism 50 and a camera 54 that irradiates light to the peripheral surface of the flange through a measurement area, and the camera 54 is below the light emitting mechanism 50 and is used An image is taken through the objective lens 52 and the shooting window in the shooting window that shoots the peripheral surface of the flanges 6-1, 6-2 through the measurement area. The light emitting mechanism 50 is an example of the light irradiating portion of the present invention, and irradiates light to the measurement position from a measurement window opened at a position close to the contact piece 34 on the upper side, for example.

As shown in, for example, A in FIG. 5, at least the objective lens 52 is arranged to be displaced upward at a predetermined angle with respect to the measurement area formed by the contact pieces 34-1 and 34-2 that are in contact with the measurement position. The arrangement direction of the objective lens 52 is set to an angle that can take in the images in the circumferential direction of the flanges 6-1, 6-2 forming the image of the light irradiated by the light emitting mechanism 50. In addition, the front surface portion 55 of the housing portion 32 may be formed with an inclined surface that inclines the lower side than the contact piece 34-2, for example. Inside the front surface portion 55 of the housing portion 32, for example, the camera 54 provided in the housing 32 can be placed in accordance with the arrangement angle of the objective lens 52. In addition, the front surface portion 55 can also be used as a gripping portion that allows a worker performing measurement processing to grip the housing portion 32.

In addition, as shown in, for example, B in FIG. 5, the grip portion 40 on the rear side of the housing may be disposed on the center side with respect to the left and right ends of the housing portion 32, or may be, for example, in response to the dominant hand of the operator Alternatively, the hand in either of the left and right directions of the grip portion 40 may be held at a position according to the left and right direction.

>Internal structure of measuring device between flanges> FIG. 6 shows an example of the internal configuration of the measuring device between flanges. As shown in, for example, FIG. 6, a light-emitting mechanism 50 disposed toward the front surface side of the housing 32 and an objective lens 52 and a camera 54 that are inclined in accordance with the subject of photography are provided inside the housing 32. In addition, a control unit 56 is provided. In addition to outputting operation instructions to the light emitting mechanism 50 and the camera 54, the control unit 56 also performs ingestion or analysis processing of measured image data. In addition, the control unit 56 is electrically or physically connected to the trigger switch 42 and can notify the presence or absence of the pressing operation of the trigger switch 42.

<Gap, gap gauge side> FIG. 7 shows an example of a state where gaps and gap drops are measured using a measuring device between flanges. As shown in, for example, A in FIG. 7, the inter-flange measurement device 30 allows the operator to hold the grip portion 40 to arrange the contact pieces 34-1 and 34-2 for the sealing construction portion 4 that is the measurement object. At this time, the operator arranges the insertion pieces 36 of the contact pieces 34-1 and 34-2 together in a direction that can be inserted into the gap 14 between the flanges 6-1 and 6-2. In addition, in the gap and gap drop measurement process, for example, one or a plurality of measurement positions C must be set along the peripheral surfaces of the flanges 6-1, 6-2, and the operator must arrange the convexity for the predetermined measurement position C缘间测装置装置30。 Edge measuring device 30. For the specification of the measurement position C and instructions to the operator, for example, a symbol indicating the measurement position may be added to the gasket 8 inside the flange 6-1, 6-2 or the gap 14, or the bolt 10 or nut 12, Or it can be set during measurement. The measurement position may be, for example, the initial measurement position determined by the operator as a reference position, and the position offset from the position by a predetermined angle with respect to the central axis of the flange 6-1, 6-2 may be set as the next measurement position. In addition, the control unit 56 of the inter-flange measurement device 30 may also read the identification label information provided on the bolt 10 or the nut 12 with a camera 54 or a comparison mechanism (not shown) to determine whether it is the set measurement. position.

As shown in, for example, B in FIG. 7, the inter-flange measurement device 30 operates the trigger switch 42 in a state where the insertion piece 36 is inserted into the gap 14 and the contact pieces 34-1 and 34-2 are brought into contact with the circumferential surface of the flange. At this time, the shooting process can be performed by the light emission of the light emitting mechanism 50 or the camera 54.

The light emitting mechanism 50 irradiates light in a vertical direction with respect to the peripheral surfaces of the flanges 6-1, 6-2 and the opening surface of the gap 14, for example. Thus, as shown in, for example, A in FIG. 8, on the surfaces of the flanges 6-1, 6-2, the gap 14 can be entrained to form thin light images F1, F2 by the light irradiated from the light-emitting mechanism 50 (FIG. 8 of B). In addition, inside the gap 14, for example, a thin light image is formed on a part of the facing surfaces of the flanges 6-1, 6-2, and, as shown in B of FIG. 8, a gasket existing inside the gap 14 The peripheral surface of 8 is also irradiated with light to form a thin light image F3. The camera 54 of the inter-flange measurement device 30 is arranged at a position displaced to a predetermined angle with respect to the light-emitting mechanism 50, and the focal length of the image has been adjusted for the peripheral surfaces of the flanges 6-1, 6-2. That is, since the two contact pieces 34-1 and 34-2 are arranged along the gap, the camera 54 is displaced from the light emitting mechanism 50 along the opening direction of the gap 14 of the sealing construction part 4, and moves from the measurement position C from The fine light image is taken in an oblique direction. In this way, in addition to taking and capturing at least the fine light images F1, F2 formed on the surfaces of the flanges 6-1, 6-2, the camera 54 may, for example, form the convex light with convex light The image of the facing surface of the edges 6-1, 6-2 or the image irradiated and formed on the spacer 8 is taken.

>Control Department 56> FIG. 9 shows a configuration example of the control unit of the inter-flange measurement device. The control unit 56 is a control mechanism of the inter-flange measurement device 30 and is an example of an inter-flange measurement management mechanism. The control unit 56 is configured by a computer, for example, and includes a processor 60, a storage unit 62, an input/output unit (I/O) 64, a touch sensor 66, a communication unit 68, and a display screen 48. The processor 60 is an example of a processing mechanism, and performs arithmetic processing such as an OS (operating system) or a measurement program between flanges existing in the storage unit 62. In addition to the image processing including the light-emission control of the light-emitting mechanism 50 executed in response to the operation of the trigger switch 42, the photographing process performed by the camera 54, the binarization of the thin light images F1 and F2, etc. In addition to the analysis process of extracting the data of the thin light images F1, F2 or the edge data Fx1, Fx2, and calculating the width W of the edge data Fx1, Fx2 of the gap 14 or the gap drop H according to the analysis result, it is also included in the screen 48 Display processing of measurement results, etc. The storage section 62 is used for storage of the OS, inter-flange measurement program, recording of the captured image, analysis result, calculation result, etc., and is provided with ROM (Read Only Memory) and RAM (Random Access Memory, Random Access Memory). In this storage part 62, it is sufficient to use a storage element that can hold the stored content.

The I/O 64 is controlled by the processor 60 and is used to control the input and output of information. For this I/O 64, for example, a touch sensor 66, a display screen 48, a camera 54, and a light emitting mechanism 50 can be connected. In addition, for the inter-flange measurement device 30, for example, a specific barcode reader used for flanges, washers, bolts, nuts, etc., a removable external memory, etc. may be connected. The barcode reader is an example of the information acquisition department. The external memory is a taken out memory for recording log information, as long as a USB (Universal Serial Bus) memory is used. The touch sensor 66 is an example of a mechanism for forming the information prompting section 46, and can detect the contact operation of the operator by the display screen corresponding to the display screen 48, and is used for input information input opportunities and output information extraction opportunities , And mode switching. The communication part 68 is controlled by the processor 60 and can be used for wireless connection with an external device or Internet connection.

<About measurement results> Fig. 10 shows an example of measurement results of gaps and gap drops. The storage unit 62 can store the measurement data 70 calculated by the analysis process as shown in, for example, FIG. 10. The measurement data 70 stores the results of analyzing the data of the thin light images F1 and F2 or the edge data Fx1 and Fx2 contained in the captured image by a prescribed calculation algorithm. As shown in, for example, A in FIG. 10, in this measurement data 70, the gap width W14 or gap drop H can be stored for each measurement position C, respectively.

In addition, the control unit 56 may, for example, use the captured image data to generate a display screen that can visually compare the gaps or gap drops between the measurement points. As shown in, for example, B of FIG. 10, the display screen 48 displays a measurement result screen obtained by extracting the data of the captured thin light images F1 and F2 and the edge data Fx1 and Fx2. On this measurement result screen, for example, it is possible to shoot at the measurement locations C1 to C3, and combine the analyzed data into a comparable comparison line (dashed line display) and the like for display. By displaying the measurement points in a comparable manner as described above, it becomes possible to grasp the displacement of the width W or the gap drop H of the gap 14 at each measurement position.

>Measurement and processing between flanges> Fig. 11 shows an example of measurement processing between flanges. The processing content and processing sequence shown in FIG. 11 are examples of the inter-flange measurement method or the inter-flange measurement program of the present invention, but the present invention is not limited to such a configuration. In the measurement process between flanges, the insertion position 36 of the contact pieces 34-1 and 34-2, which are positioning guides, is inserted into the gap 14 at the measurement position C set on the flange (S11). With this, the arrangement position, light irradiation direction, irradiation angle, and imaging direction of the inter-flange measurement device 2 are stabilized in a predetermined state. When the control unit 56 detects the pressing operation of the trigger switch 42 (S12), it turns on the light emitting mechanism 50 and irradiates light toward the measurement position C1 (S13), and the camera 54 is used to form the measurement position. The image of C including the fine light image is photographed (S14). The control unit 56 performs measurement processing of gaps and gap drops by image analysis (S15). This measurement process only needs to perform the process described in S4 of FIG. 3 and the like. Then, the control unit 56 displays the measurement results of the gap and the gap drop on the display screen 48 (S16).

[Effects of the second embodiment] According to such a configuration, the following effects can be obtained. (1) In the formation of the fine light image used in the measurement of the gap and the gap drop, since the plurality of contact pieces 34-1 and 34-2 determine the light irradiation direction or distance and the shooting angle, it can be suppressed The unevenness of the measurement results of each operator can be produced, and the measurement processing with higher accuracy can be performed. (2) The steps of reducing the possibility of human errors such as visual confirmation errors or work proficiency of the operator can improve the accuracy of the measurement of the gap or gap drop and the management of the sealing construction process. (3) The measurement process of the gap or the gap drop can be performed with a simple operation such that the device is placed at the measurement position and the trigger switch is operated. Therefore, the working time of the sealing construction process can be shortened, and the measurement time is short Even if the number of clearance confirmation steps is increased, there will be no increase in the load of the locking operation of the flange, and it is possible to improve the locking accuracy. (4) By displaying the results measured in the plural places of the flange in a comparable manner, the state of the sealing construction can be grasped visually, which makes it easier to infer the construction inadequacy.

[Third Embodiment] FIG. 12 shows a configuration example of the inter-flange measurement system of the third embodiment. The configuration shown in FIG. 12 is only an example, and the present invention is not limited to such a configuration. In FIG. 12, the same symbols as those in FIGS. 1 and 4 are added. As shown in, for example, FIG. 12, this inter-flange measurement system 80 includes an inter-flange measurement device 30 and an information terminal device 82 that measure the gap of the sealing construction portion 4. The inter-flange measuring device 30 has the same structure as that already described, and therefore its description is omitted. The information terminal device 82 and the inter-flange measurement device 30 can be connected by wire or wirelessly. The information terminal device 82 may include, in addition to the function of ingesting and managing the measurement results of the gap measured by the inter-flange measurement device 30 and the gap drop, as well as the fine light captured by the inter-flange measurement device 30. Functions like image ingestion and image processing or analysis processing. In addition, the information terminal device 82 may output a control instruction to the inter-flange measurement device 30, for example. The information terminal device 82 is configured by, for example, a controller terminal or a PC (Personal Computer), a server device, or the like that operates in conjunction with the inter-flange measurement device 30, and includes a processing device 84, an input device 86, and a display装置88。 Device 88.

In addition, this information terminal device 82 is, for example, connected to a sealing construction device that performs the locking process of the bolt 10 and the nut 12 of the sealing construction part 4, and stores the axial force detected in the sealing construction process or is set in the seal Setting information such as the tightening torque value of the construction device, and the locking position information of the sealing construction part 4 and the like.

The processing device 84 of the information terminal device 82 generates a display screen that displays the detection results such as the locking position information acquired during the sealing construction management process and the detected axial force. In addition, the processing device 84 may also, as shown in, for example, FIG. 13, the locking position information of the bolts and nuts obtained in the sealing construction management, and the clearances and clearances obtained or calculated in the measurement processing between the flanges The drop information is combined to generate the locking result screen 90. On this locking result screen 90, for example, locking positions [1] to [8] indicating eight locking positions of bolts and nuts are set. In addition, on this screen, the information of the measured gap and the information of the measurement positions C1 to C4 of the four gaps are input. The processing device 84 may, for example, combine the results of the gaps at the measurement positions C1 to C4 for the locking positions [1] to [8], and perform a prediction process of the gaps other than the measurement position. In this prediction process, for example, the gap measurement information between the plurality of measurement positions may be used to calculate the tendency of the gap state to change using the previous gap measurement information.

Through the combined processing of such measurement results, it is possible to visually grasp the unevenness in the gap 14 between the locking positions [1] to [8]. The difference in the gap 14 between the measurement positions or the locking positions affects the unevenness of the locking axial force of the bolts and nuts at each locking position. Also, when the locking force of the flanges 6-1, 6-2 is strong, for example, in a part of the locking place, the locking force across the opposite side of the central axis becomes weaker (that is, along the convex The locking force of the central axis of the edge 180[°] or a position close to this angle becomes weak), and the width W of the gap 14 is widened, so-called uneven locking state, so the gap can not be achieved Master the bolts that have been formed to be unevenly locked.

>Measurement and processing between flanges> Fig. 14 shows an example of measurement processing by the inter-flange measurement system. The processing content and processing sequence shown in FIG. 14 are examples of the inter-flange measurement method or the inter-flange measurement program of the present invention, but the present invention is not limited to such a configuration. The sealing construction part 4 performs flange locking processing formed by, for example, a locking operation using bolts and nuts of a locking tool (not shown) (S21). As the inter-flange measurement process, the inter-flange measurement device 30 is provided at the set measurement position (S22), and the light irradiation and the photographing process of the measurement position are performed by pressing the trigger switch (S23). In addition, the inter-flange measurement device 30 or the information terminal device 82 acquires the captured image information and performs the calculation process of the gap or gap drop, and the measurement result formed by the calculation is processed between the flange measurement device 30 and the information processing Transmission and reception are performed between the devices 82 (S24).

In the information terminal device 82, the gap management process of the measurement result of the measurement position is performed, and the image generation process is performed using the axial force management information and the like stored in the seal construction management process (S25). In addition, the information terminal device 82 causes the gap management image to be displayed on the display device 88 (S26). In addition, the gap management image may be transmitted from the information terminal device 82 to the inter-flange measurement device 30 and displayed on the display screen 48, for example.

[Effects of the third embodiment] According to such a configuration, the following effects can be obtained. (1) Since the locking state of the flange can be managed in association with the tightening process of the bolt and nut, the convenience or reliability of the seal construction management can be provided. (2) The measurement or management process of the locked state of the flange at the locked position or the measured position can be facilitated, and convenience can be improved. (3) Since the measurement process of the gap between the flanges can be facilitated, the confirmation after the locking operation and the operation of re-tightening or re-tightening can be performed quickly, so the improvement of the operating efficiency and the working time can be achieved cut back. (4) Since it is possible to facilitate the measurement process of the gap between the flanges, the loosening of the screws over time can be confirmed, and the operation of re-tightening or re-tightening can be performed quickly, so the work efficiency can be sought Improvement, reduction of working time, and the reliability of the seal construction management can be improved over a long period of time.

[Other embodiments] (1) The inter-flange measurement device 30 may, for example, use the screen 48 to perform the guidance measurement processing sequence or the measurement sequence processing. (2) The screen 48 of the inter-flange measurement device 30 is not limited to, for example, a function of displaying measurement results. The screen 48 can also function as a so-called finder that displays image information captured by the camera 50 in a real-time manner, for example. Thereby, when the inter-flange measurement device 30 is arranged at the measurement position C1, in addition to visual confirmation from the outside of the device, it becomes possible to perform the arrangement work of the device while actually confirming the captured image. In addition, on the screen 48, for example, an instruction screen for instructing the arrangement position of the operator may be displayed. Thereby, the device can be accurately arranged at the set position, and the accuracy of gap monitoring can be improved.

(3) In the above-mentioned embodiment, although the case where the arrangement angle θ of the imaging unit 22 to the light irradiation unit 20 is fixed is shown, it is not limited to this. The arrangement angle θ may be set to be adjustable according to the size of the flange diameter to be measured, for example. (4) In the above-mentioned embodiment, although the process of photographing the thin light images F1 and F2 formed on the peripheral surfaces of the flanges 6-1 and 6-2 and calculating the gap or gap drop between the flanges is shown, But it is not limited to this. In the imaging unit 22 including the camera 54, for example, the fine light images F3 formed inside the gap 14 may be taken together with the fine light images F1, F2 formed on the peripheral surface of the flanges 6-1, 6-2 , And analyze the fine light image data and edge data to use in the measurement of gap or gap drop. That is, the thin light image F3 formed inside the gap 14 may be analyzed, for example, for the difference in the focal length of the imaging unit 22 or the difference in reflected light intensity, and the gap may be measured using the length of the thin light image F3, etc. 14 within the width. In addition, the image of the thin light image F3 can be used to detect the wavy state of the gasket, the wrinkle, or the degree of squeeze, as the locking state of the gasket in the gap 14, And used in sealing construction management. (5) In addition, in the inter-flange measurement device 30, different switches may be provided for the light emission of the light emitting mechanism 50 or the photographing process by the camera 54.

(6) In the above embodiment, it is shown that the contact portion 37 of the contact portion 18, that is, the contact pieces 34-1, 34-2, is in contact with the side surfaces of the flanges 6-1, 6-2 in the measurement position, and The case where the insertion piece 36 existing at the front end portion is inserted into the gap 14 to measure the gap or the gap drop is not limited to this. In the inter-flange measurement process, for example, the inter-flange measurement process may be performed without contacting the contact pieces 34-1 and 34-2 with the flanges 6-1 and 6-2. At this time, the inter-flange measuring devices 2 and 30 may, for example, remove the contact pieces 34-1 and 34-2 from the housing portions 16 and 32. In addition, in the measurement process between flanges, the measurement devices 2, 30 between the flanges may be positioned on the flanges 6-1, 6-2 using, for example, the visual inspection of an operator or a positioning jig not shown. Gap 14, and set the irradiation distance Lb. In addition, in the flange measuring devices 2 and 30, for example, a display screen or the like may be used to set a function of determining whether it is an appropriate measurement position and whether it is arranged to be shaped into the irradiation distance Lb or the shooting distance Lc. In addition, the camera 54 can also adjust the shooting distance Lc from the camera 54 using, for example, the AF (Auto Focus) function, where the shooting distance Lc is due to the flange 6-1, 6-2 that is the measurement target The distance between the thin light image generated by the side surface and the distance to the gap 14.

As described above, the best embodiment of the present invention has been described. The present invention is not limited to the invention described above. Those with ordinary knowledge in the technical field to which the present invention pertains can make various modifications or changes according to the gist of the invention described in the scope of the patent application or disclosed in the form for carrying out the invention. Such modifications or changes are of course included in the scope of the present invention. Industrial availability

The inter-flange measurement device, program and method of the present invention fix the conditions such as the irradiation distance and the image acquisition distance of the generated thin light image at the set measurement position, and are calculated by image analysis The gap between the flanges facilitates the measurement operation and improves the measurement accuracy, and can stabilize the measurement result, which is beneficial.

2. Measuring device between 30‧‧‧ flanges 4‧‧‧Seal Construction Department 6-1, 6-2 ‧‧‧ flange 8‧‧‧gasket 10‧‧‧bolt 12‧‧‧Nut 14‧‧‧ Clearance 16, 32‧‧‧Housing 18‧‧‧Contact 18-1, 18-2‧‧‧contact arm 20‧‧‧Light Irradiation Department 22‧‧‧ Shooting Department 24‧‧‧Measurement Department 34, 34-1, 34-2 36‧‧‧Insert 37‧‧‧Abutment Department 38‧‧‧Operation Department 40‧‧‧ Grip 42‧‧‧Trigger switch 44A, 44B‧‧‧contact sheet 46‧‧‧Information Reminder 48‧‧‧Display screen (screen) 50‧‧‧Lighting mechanism 52‧‧‧Access lens 54‧‧‧Camera 55‧‧‧Front surface 56‧‧‧Control Department 60‧‧‧ processor 62‧‧‧Storage Department 64‧‧‧I/O (I/O) 66‧‧‧Touch sensor 68‧‧‧Ministry of Communications 70‧‧‧ measurement data 80‧‧‧Flange measurement system 82‧‧‧Information terminal device 84‧‧‧Processing device 86‧‧‧Input device 88‧‧‧Display device 90‧‧‧Lock result screen C, C1, C2, C3, C4‧‧‧‧Measurement position (measurement location) F1, F2, F3‧‧‧fine light image Fx1, Fx2 ‧‧‧ edge data G‧‧‧Space Department h1, h2‧‧‧ displacement H‧‧‧Flange gap drop (displacement) La‧‧‧Length of contact arm Lb‧‧‧Irradiation distance Lc‧‧‧ shooting distance W‧‧‧Width θ‧‧‧Configuration angle [1], [2], [3], [4], [5], [6], [7], [8]‧‧‧Lock position S1, S2, S3, S4, S11, S12, S13, S14, S15, S16, S21, S22, S23, S24, S25, S26

FIG. 1 is a diagram showing a configuration example of an inter-flange measurement device according to the first embodiment. A of FIG. 2 is a diagram showing an example of measurement processing of a gap, and B is a diagram showing an example of measurement processing of a gap drop. 3 is a flowchart showing an example of measurement processing between flanges. 4 is a diagram showing a configuration example of a measuring device between flanges according to a second embodiment. 5 is a perspective view showing a measuring device between flanges. 6 is a partial cross-sectional view showing an internal configuration example of a measurement device between flanges. 7 is a diagram showing an example of the measurement operation of the inter-flange measurement device. FIG. 8 is a diagram showing an example of the state of light irradiation to the measurement position. 9 is a diagram showing a configuration example of a control unit. 10 is a diagram showing an example of measurement results between flanges. 11 is a flowchart showing an example of measurement processing between flanges. 12 is a diagram showing a configuration example of a measurement system between flanges according to a third embodiment. 13 is a diagram showing a display example of measurement results. 14 is a flowchart showing an example of measurement processing between flanges.

2‧‧‧ Measuring device between flanges

4‧‧‧Seal Construction Department

6-1, 6-2 ‧‧‧ flange

8‧‧‧gasket

10‧‧‧bolt

12‧‧‧Nut

14‧‧‧ Clearance

16‧‧‧Housing

18‧‧‧Contact

18-1, 18-2‧‧‧contact arm

20‧‧‧Light Irradiation Department

22‧‧‧ Shooting Department

24‧‧‧Measurement Department

C1‧‧‧Measurement position (measurement location)

F1, F2‧‧‧‧light image

La‧‧‧Length of contact arm

Lb‧‧‧Irradiation distance

Lc‧‧‧ shooting distance

θ‧‧‧Configuration angle

Claims (10)

An inter-flange measuring device is used to measure the inter-flange clamped by a plurality of bolts and nuts with a gasket interposed therebetween. The foregoing inter-flange measuring device is characterized by: The light irradiating part generates a thin light image on the flange in such a way as to enclose the gap between the flanges by the irradiation of fine light; The photographing unit, obtaining an image including the aforementioned fine light image; and The measuring section extracts fine light image data and flange edge data from the image to measure the gap or gap drop between the flanges. The inter-flange measurement device according to claim 1, wherein the light irradiating portion generates the fine light image at a measurement position associated with the position of the bolt or the bolt locking position. For example, the inter-flange measurement device of claim 1 further includes an information prompting section, which is associated with the identification information of the flange, the position of the bolt, or the bolt locking position to prompt the measurement of the gap or gap drop result. The measurement device between flanges according to claim 1 includes a housing portion, and the housing portion is positioned at the measurement position of the flange by inserting the positioning guide portion into the gap between the flanges, The aforementioned positioning guide includes: The abutment portion, sandwiching the measurement position and abutting the peripheral surface of the flange; and The guide protrusion is formed in a part of the contact portion and is inserted into the gap, The housing portion can be positioned at the measurement position by the abutment portion and the guide protrusion. The inter-flange measurement device according to claim 1, wherein the housing portion includes a grip portion and an imaging switch, and the imaging switch can be operated together with the grip of the grip portion. The inter-flange measurement device according to claim 1 further includes a communication unit that sends out measurement data, and provides the measurement data to an information terminal connected to the communication unit by wired or wireless means. A program is a program implemented by a computer, and the following functions are implemented by the aforementioned computer: Thin light is irradiated from the housing portion to produce a thin light image on the flange in such a way as to enclose the gap between the flanges; Obtain an image containing the aforementioned thin light image; and Extract fine light image data and flange edge data from the aforementioned image to measure the gap or gap drop between the flanges. For example, the program of claim 7 is used to further implement the following functions with the aforementioned computer: to associate with the identification information of the position of the flange, bolt or bolt locking position to prompt the measurement result of the clearance or clearance drop. A method for measuring between flanges is to measure between flanges sandwiched by gaskets and fastened with a plurality of bolts and nuts. The method for measuring between flanges includes the following steps: Position the housing part at the measurement position between the flanges; A thin light image is generated on the flange in such a way that the gap between the flanges is entrained by the fine light irradiation of the light irradiation section; Obtaining an image including the aforementioned fine light image through the photographing unit; and The measurement section extracts fine light image data and flange edge data from the image to measure the gap or gap drop between the flanges. For example, the measurement method between flanges of claim 9 further includes the following steps: establishing a correlation with the identification information of the position of the flange, the bolt, or the bolt locking position to prompt the measurement result of the gap or gap drop.

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