KR100775667B1 - Apparatus and method for installation of multi beam flow meter - Google Patents

Abstract

An apparatus and a method for installing a multi beam flow meter are provided to install a transducer on an accurate position of a pipe easily by adjusting a mounting angle of an overpass type jig once. An apparatus for installing a multi beam flow meter includes an overpass type jig(100). The overpass type jig includes a pair of runner blocks(120,121), an angle disk(150), a standard disk(160), leg parts(130,131), and a plurality of interval jigs(140). The runner blocks are inserted and temporarily fixed on a rail part(110). The angle disk is fixed on the bottom of the rail part. The standard disk is separably laminated beneath the angle disk and is temporarily fixed on a pipe(2) rotating in a limited angle range. The leg parts adjustable in height are separably attached on the bottom of each runner block. The interval jigs are arranged on a side of the leg parts at regular intervals.

Description

Apparatus and method for installation of multi beam flow meter}

1 is a perspective view for explaining a general ultrasonic multi-line flow meter,

Figure 2 is an exploded perspective view for explaining the configuration of a multi-line flowmeter installation apparatus according to an embodiment of the present invention,

3 is an enlarged bottom view of an important part of the rail portion shown in FIG.

4 is an exploded cross-sectional view taken along the line A-A shown in FIG. 2;

5 is an exploded view for explaining the coupling relationship of the jig bar, the interval jig, and the leg shown in FIG.

6 is a plan view for explaining the angle jig shown in FIG.

7 is a perspective view for explaining the marking tool shown in FIG.

8 is a flowchart illustrating a multi-line flow meter installation method of the present invention.

FIG. 9 is an exploded perspective view of a clamp jig set in the multi-line flowmeter installation apparatus shown in FIG. 2 to install the multi-line flowmeter in a concrete pipeline. FIG.

             <Description of the symbols for the main parts of the drawings>

2: pipe 20: concrete pipe

3, 30: switch sensor housing 100: overpass jig

110: rail portion 120, 121: runner block

130, 131: leg 140: spacing jig

141 bar insertion hole 150 angle disc

160: reference disc 200: angle jig

201, 401: jig bar 300: marking tool

400: housing mounting jig 500: clamp jig

The present invention relates to an apparatus and a method for installing a multi-line flowmeter, and more particularly, a plurality of ultrasonic emission transducers for measuring the flow rate of large diameter pipes can be precisely and quickly adjusted to the installation position and angle of the pipe or pipe. It relates to a multi-line flowmeter installation device and method for installation and construction.

In general, the ultrasonic emission receiving converter (hereinafter, referred to as a "converter") to be installed in a pipe through the present invention has a complicated flow rate distribution state and changes from time to time. In addition, it is possible to measure the flow rate with high reliability, and is configured to measure the flow rate by sending and receiving ultrasonic waves in pairs.

The converter shall be measured after being installed in multiple lines (e.g., 3 pairs or 5 pairs) to ensure high-precision flow rate measurement results, and the mounting position and mounting angle corresponding to the transmission or reception should match the predesigned values. Therefore, the measurement error can be minimized.

However, in the related art, precise installation positions and installation angles are required, and thus, field installation work is impossible and the following installation problems are revealed.

For example, the three-wire pair switchers 1a and 1b as shown in FIG. 1 should maintain each installation angle a accurately for each pair, and also move up and down between the switchers 1a and 1b related to the installation position. The installation spacing must also be maintained accurately for each pair to maintain satisfactory measurement sensitivity as an ultrasonic multi-line flowmeter.

The pipe 2 has a center line CL passing through its axis. Each diverter 1a, 1b is mounted in the diverter sensor housing 3 respectively for removal and replacement.

The installation angle (a) refers to the angle between the converters 1a and 1b or the installation reference line of the converter sensor housing 3 based on the normal plane y. Here, the normal plane y is an imaginary plane perpendicular to the installation reference plane x. The installation reference plane x is a reference plane for maintaining the installation angle a on one side and the other side of the pipe 2 with respect to the origin o between the pair of diverters 1a and 1b.

Each switch sensor housing (3) has to be fixed to penetrate the wall of the pipe (2) by welding or the like to the outside of the pipe (2) while maintaining precisely the above-described installation angle and installation position (installation interval). I have a problem.

That is, since the pipe 2 and the switch sensor housing 3 have a circular pipe shape, in order to install the switch sensor housing 3 at the installation position while maintaining the precise installation angle, the pipe 2 and the switch sensor housing 3 have a circular pipe shape. Each angle measurement, perforation work, shape adjustment and fabrication of the joint portion of the switch sensor housing (3) are required individually for each main surface position, and thus there is a disadvantage in that the installation work cannot be performed quickly.

In particular, in the prior art, the angle measurement is required for each installation position of the switch sensor housing (3). Here, each installation angle (for example, 45 °) is difficult to accurately measure for each installation position by the circular shape of the pipe (2), and the converter sensor housing (3) is fixed to the pipe (2) according to the installation angle It is very difficult to install.

Therefore, in view of the above angular measurement and installation intervals, the work such as fixing the switch sensor housing 3 to the pipe 2 is very difficult to be carried out directly on the pipe buried in the field. Even if the sensor housing 3 is installed in a pipe, there is a disadvantage in that it cannot maintain satisfactory measurement sensitivity as an ultrasonic multi-line flowmeter.

Accordingly, the present invention has been made to solve the problems of the prior art as described above, the object of the present invention is to precisely install a multi-line ultrasonic emission transducer (pipeducer) in the pipe to measure the flow rate and improve the installation quality It is to provide a multi-line flowmeter installation apparatus and method for performing high precision construction by uniformizing.

An object of the present invention described above includes an overpass jig placed on an upper portion of a pipe, wherein the overpass jig includes: a rail portion having a horizontal beam shape; A pair of runner blocks slidably inserted and temporarily fixed in the rail unit; An angle disk fixed to the bottom surface of the rail portion; A reference disk detachably stacked on the bottom of the angle disk and temporarily fixed to the pipe to rotate within a finite angle range; A leg part detachably attached to the bottom of the runner block to enable height adjustment; It is composed of a plurality of interval jig arranged and fastened while maintaining a constant installation interval along the height direction on one side of the leg portion, any one of the angle jig, marking tool, housing mounting jig in the bar insertion hole of the interval jig By attaching and detaching using the jig bar, it is achieved by a multi-line flowmeter installation apparatus, characterized in that a plurality of switch sensor housings are installed in the pipe at the same time.

In addition, an object of the present invention is to install a multi-line ultrasonic emission receiver in a pipe to measure the flow rate, the seating step of mounting a reference disk on the pipe; An alignment step of leveling the horizontal level of the reference disc using a level gauge; A mounting step of mounting an overpass jig on an upper portion of the reference disc as the center of rotation of the reference disc is inserted into the rotation hole of the angle disc; Marking the installation position of the transducer sensor housing based on the center of the pipe using a laser beam of the laser pointer of the marking tool after temporarily attaching the marking tool to the interval jig of the leg portion of the overpass jig; Adjusting an angle of mounting of the via bridge jig by bringing the angle jig of the jig bar hypothesized into the gap jig into close contact with the pipe; A fixing step of fixing the reference disk fixed to the pipe and the angular disk fixed to the rail portion of the via bridge jig to fix the via bridge jig adjusted to the mounting angle to the pipe; It is realized by a multi-line flow meter installation method comprising an installation step of fixing the switch sensor housing assembled to the housing mounting jig to face the pipe by using the housing mounting jig of the corresponding jig bar installed on each of the gap jig. .

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

In the accompanying drawings, Figure 2 is an exploded perspective view for explaining the configuration of a multi-line flowmeter installation apparatus according to an embodiment of the present invention, Figure 3 is an enlarged bottom view of the important part of the rail portion shown in FIG. 4 is an exploded cross-sectional view taken along the line A-A shown in FIG. 2, and FIG. 5 is an exploded view for explaining a coupling relationship of the jig bar, the spacer jig, and the leg shown in FIG. 2. In addition, Figure 6 is a plan view for explaining the angle jig shown in Figure 2, Figure 7 is a perspective view for explaining the marking tool shown in Figure 2, Figure 8 illustrates a multi-line flowmeter installation method of the present invention It is a flowchart for.

As shown in Fig. 2, the multi-line flowmeter mounting apparatus of the present invention is for simultaneously installing a plurality of diverters at a corresponding installation position of the pipe 2 in accordance with the installation angle.

In the description of the present invention, the pipe 2 is preferably a pipe member having a flange at both ends, or a conduit or pipeline embedded in the field.

The multi-line flowmeter installation apparatus of the present invention maintains the installation angles of the plurality of or multiple rotation (multi-line) ultrasonic launch receivers, that is, the transducer pairs to be parallel to each other while maintaining the same installation angle and the same pipe ( 2) It is a device to install.

The multi-line flowmeter installation apparatus of the present invention includes an overpass jig 100 placed on the upper portion of the pipe 2; An angle jig 200, a marking tool 300, and a plurality of housing mounting jigs 400 are detachably coupled to the pedestrian bridge jig 100, respectively.

Angle jig 200 is detachably coupled to the jig bar 201. Angle jig 200 serves to adjust the mounting angle (r) (see Fig. 2) of the viaduct jig 100 in contact with the pipe (2) corresponding to the installation angle of the switch sensor housing.

Here, the mounting angle (r) is an angle between the center line of the pipe (2) and the longitudinal direction of the rail unit 110, the installation angle (a) of the switch sensor housing 3 described above or the inclination angle of the angle jig 200. It is preferable that it is the same as FIG.

The marking tool 300 is used for marking the installation position of the transducer sensor housing 3 by firing a laser beam on the surface of the pipe 2.

The housing mounting jig 400 forms a screw hole detachably attaching the jig bar 401 to one side, and forms a bolt thread on the other outer circumference thereof, so that the switch sensor housing 3 is detachable by screwing. Can be assembled.

In the present embodiment, in order to install the ten switch sensor housings 3 of the 5-wire pair in the pipe 2, the housing mounting jig 400 and the jig bar 401 are each required 10 pieces.

Hereinafter, the overpass jig 100 will be described in detail.

The overpass jig 100 includes: a rail unit 110 serving as a balance beam in a horizontal beam shape; A pair of runner blocks 120 and 121 runner blocks which are slidably inserted in the rail unit 100 and which can be temporarily fixed by fixing bolts; Leg portions 130 and 131 detachably mounted at heights of the bottoms of the runner blocks 120 and 121; A plurality of gap jig is arranged in one side of each leg portion 130, 131 while keeping the installation interval constant along the height direction and the bar insertion hole is formed in the horizontal direction so that the jig bars 201, 401 can be inserted. 140; An angle disk 150 fixed to the bottom of the rail unit 110; The reference disk 160 is detachably stacked on the bottom of the angle disk 160 and rotatably coupled within a finite angle range.

The rail unit 110 has a precise straightness so as to play a role such as a crossbar or a balance bar at the top of the overpass jig 100, and has a box-shaped beam shape as a material having almost no bending deformation in its own load or an external load.

Each of the runner blocks 120 and 121 includes an upper block portion 122 having a rail hole for inserting to surround the rail portion 100 to perform a sliding operation along the longitudinal direction of the rail portion 110; It consists of a lower block portion 123 assembled under the upper block portion 122.

The leg portions 130 and 131 are inserted into leg holes formed up and down at the bottom of the lower block portion 123 of the runner blocks 120 and 121 and then temporarily fixed by the height adjusting bolts. The leg portions 130 and 131 are made of aluminum and are beam members having a rectangular cross-sectional shape.

Bolting grooves are formed in the four side surfaces of the legs 130 and 131 along the longitudinal direction of the legs 130 and 131, respectively.

The spacer jig 140 is paired along the width direction of the leg parts 130 and 131, and is arrange | positioned along the length direction of the leg parts 130 and 131. As shown in FIG.

The plurality of spacer jigs 140 are fixed at the corresponding fastening positions of the legs 130 and 131 to correspond to the installation positions of all the diverter sensor housings, for example, the five-wire pair of the sensor sensor housings. For example, a total of 20 were used in the embodiments of the present invention, 10 for each leg 103, 131.

Since the lengths of the legs 130 and 131 and the number and spacing of the jig 140 may be increased or decreased depending on the number of the transducer sensor housings 3 to be installed in the pipe 2, the size or number thereof is increased. It does not specifically limit in description of this invention.

The angular disk 150 is welded at the center of the bottom surface of the rail part 110.

Referring to FIG. 3, the center of the angular disk 150 and the shaft center of the rail unit 110 coincide with each other. In this state, the angular disk 150 is fixed through the welding portion 155 of the bottom of the rail portion 110.

The angular disk 150 is symmetrical with each other in front and rear portions thereof, and forms a pair of arc-shaped guide holes 151 and 152 penetrated in the thickness direction of the angular disk 150.

A rotation hole 153 is formed in the center of the angle disk 150, so that the rotation center projection 163 of the reference disk 160 shown in Figure 2 can be inserted.

Referring to FIG. 2, the reference disc 160 has stud bolts 161 and 162 protruded into the arc-shaped guide holes 151 and 152 of the angular disk 150 on the upper surface thereof. The rotation center projection 163 is formed at the center of the disk 160.

The locking nuts may be coupled to each of the stud bolts 161 and 162. This coupling relationship is to fix the angle disk 150 and the reference disk 160 after the adjustment of the mounting angle (r) of the overpass jig 100 in the future.

On the bottom surface of the reference disk 160, a pair of projection disk seats 164 and 165 to be placed on the upper portion of the pipe 2 are formed. Each of the disk seats 164 and 165 is located on the bottom surface of the reference disk 160 in a state parallel to the longitudinal direction or the center line of the pipe 2 so that the disk seats 164 and 165 can be placed in parallel with the longitudinal direction of the pipe 2. It means a shaft member like fixed '11' rail.

These disk seats 164 and 165 are temporarily welded with the upper part of the pipe 2 to temporarily fix the reference disk 160 to the upper part of the pipe 2 before mounting the overpass jig 100, and all the transducer sensor housings. When (3) is completed installation in the pipe (2), it is the site | part removed from the pipe (2) by dismantling the part temporarily welded.

As shown in FIG. 4, the rail part 110 is inserted into the rail hole 124 of the upper block part 122 of each runner block 120.

At this time, a plurality of first insert plates 125 are further inserted between the rail portion 110 and the inner surface of the holes in the rail holes 124, and each of the first insert plates 125 has its own fixing bolt. While preventing the end of the rail portion 110 from crimping and damaging the surface of the rail 110, expand the fastening force of the fixing bolt, and serves to maintain a solid temporary fixed state, with the runner block ( When the sliding operation of 120 is temporarily removed from the rail hole 124 serves to facilitate the sliding operation.

In each runner block 120, the upper block portion 122 and the lower block portion 123 may be coupled to and separated from each other in a flange type. This allows replacement of the lower block portion 123 corresponding to the standard of the leg portion 131.

Similarly to the above-described roles, the leg hole 126 of the lower block part 123 may further include a second insert plate 127 interposed therebetween.

Each leg portion 131 inserted into the leg hole 126 has a plurality of spacer jigs 140 on its side.

Here, the spacer jig 140 forms a bar insertion hole 141 in a direction (for example, a horizontal direction) coinciding with the longitudinal direction of the rail unit 110, so that the diameter of the bar insertion hole 141 can be varied. It is preferable that one side part forms the opening part 142 which opened,

Referring to FIG. 4 together with FIG. 4, it is preferable that the spacer jig 140 further tightens the tightening bolt 143 in a direction perpendicular to the penetrating direction of the bar insertion hole 141 based on the opening 142. Do.

The spacer jig 140 has a bolt fastening groove 135 coincident with the longitudinal direction of the leg portion 131.

Bolt fastening groove 135 is formed in one row or a plurality of rows respectively on the four sides of the legs (130, 131), stop jaw 136 to seat the nut for the positioning bolt of the spacer jig 140 ).

As described above, the spacer jig 140 is constituted of two pairs along the width direction w of the leg portions 130 and 131 so that the bar insertion holes 141 coincide with each other. The above-described jig bars 201 and 401 are inserted into the bar insertion hole 141.

As shown in FIG. 6, the jig bar 201 refers to any one of a hollow shaft, a solid shaft, a rod member, or a bar member which is screwed to at least one end and is screwable. .

The jig bar 201 is screwed into the female threaded hole 209 of the jig connecting portion 209 of the angular jig 200 through its threaded portion.

The angle jig 200 forms an inclined guide side 202 having an inclination angle t based on the longitudinal direction of the jig bar 201.

Here, the angle of inclination (t) of the angle jig 200 is the same as the installation angle (a) for installing the converter sensor housing (3) mentioned and described in the prior art or the description of the present invention to a large diameter pipe (Fig. 1). Reference).

The angle jig 200 may further form a ring hole 203 through the one side corner portion thereof in the thickness direction, to facilitate storage when not in use, and to prevent the inclined guide side 202 from being damaged.

As shown in FIG. 7, the marking tool 300 includes a first hollow part 301 having a hollow shaft shape and having an outer diameter that can be inserted into the bar insertion hole of the spacer jig described above; A second hollow part 302 formed integrally with the second hollow part 301 so as to have a relatively large outer diameter at one side of the first hollow part 301; The laser pointer 303 is installed and inserted along the axis of the second hollow portion 302.

The inner diameter of the first hollow portion 301 is used as a passage through which the laser beam of the laser pointer 303 passes. The outer diameter of the first hollow portion 301 is fastened to the bar insertion hole of the spacer jig.

The second hollow portion 302 is further provided with a plurality of mounting bolts, such mounting bolts to adjust the installation position of the laser pointer 303 to match the axis of the first, second hollow portion (301, 302) Used.

Once the marking tool 300 is simply inserted into the bar insertion hole of the spacer jig, the laser beam of the laser pointer 303 is aimed in the direction corresponding to the longitudinal direction of the rail portion.

As shown in Figure 8, it will be described a multi-line flowmeter installation method of the present invention.

Seating step (S10) is a step for mounting the reference disk on the pipe. At this time, the disk seat, which is an 11-shaped shaft member formed on the bottom surface of the reference disk, seats the reference disk in a self-aligning manner corresponding to the longitudinal direction of the pipe by its shape.

The fitting step S20 is to level the reference disc. Here, the level of the reference disc is made to be perpendicular to the ground or to the direction of gravity using a conventional level gauge.

The mounting step (S30) is a step of mounting the pedestrian bridge jig on top of the reference disk after the angle disk to the reference disk. The rotation center projection of the reference disk is inserted into the rotation hole of the angular disk, and a pair of stud bolts of the reference disk are respectively inserted into the corresponding arc-shaped guide holes, and then loosely fastened with the locking nut.

The marking step (S40) is a step of marking the installation position of the transducer sensor housing based on the center of the pipe by using the laser beam of the laser pointer of the marking tool after temporarily fastening the marking tool to the interval jig of the leg portion of the overpass type jig. . After marking is finished, the marking tool is separated from the spacer jig.

The adjusting step (S50) is a step of adjusting the mounting angle of the viaduct jig by closely contacting the angle jig to the pipe.

Here, the angle jig is mounted to the leg portion by the jig bar for the angle jig hypothesized in the spacing jig.

In addition, the inclination guide side of the angle jig is naturally adjusted to the mounting angle of the rail portion of the overpass jig in the process of being in close contact with the outer circumferential surface of the pipe.

To this end, the angle jig is temporarily fastened to any one of the interval jig of the leg portion of the overpass jig using the jig bar.

At this time, the close contact between the angle jig and the pipe is based on the inclined guide side of the inclination angle having the same inclination angle as the installation angle for installing the switch sensor housing on the pipe.

The fixing step (S60) is a step of fixing the reference disk fixed to the pipe and the angle disk fixed to the rail portion of the overpass jig to fix the overpass jig adjusted to the mounting angle to the pipe. The mutual fixation of the reference disc and the angular disc is carried out using arcuate guide holes, stud bolts and locking nuts. Thereafter, the angle jig described above is separated from the leg portion of the overpass jig.

The installation step (S70) is a step of simultaneously installing a plurality of switch sensor housings in the pipe by using the gap jig of the overpass jig, the housing mounting jig and its jig bar.

That is, the installation step (S70) means using the housing mounting jig of the jig bar installed in each of the spacing jig, the step of fixing the transducer sensor housing assembled to the housing mounting jig facing the pipe.

Here, the interval jig provided in the leg part of the viaduct jig forms 5 pairs, for example, and is arrange | positioned along the longitudinal direction of a leg part, and maintains a constant space | interval.

The spacing and the number of spacing jig of the spacing jig are preferably predetermined or designed to correspond to the size of the pipe.

A total of ten spacer jigs insert the corresponding jig bars assembled with each housing mounting jig into their bar insertion holes, thereby allowing the housing mounting jig to be mounted while keeping parallel to each leg.

Here, the temporary assembly means screw-connecting the transducer sensor housing to each of the other outer circumference which formed the bolt-shaped thread in each housing mounting jig.

These ten switch sensor housings and jig bars are mounted by an overpass jig in the present invention and face the switch sensor housing directly to the pipe installation position while maintaining accurate installation angles and installation intervals without additional angle measurement. (Contact or close).

Thus, the operator can fix and install ten diverter sensor housings in position on the pipes only by welding each diverter sensor housing to the pipe using the facing contact or the adjacent site.

In this case, the operator can insert a separate biasing jig (not shown) for punching inside each diverter sensor housing to easily and easily pierce the wall of the pipe, and then quickly switch each of the diverter sensor housings quickly. You can install it.

9 shows a clamp jig 500 set in a multi-line flowmeter mounting apparatus.

Referring to FIG. 9, since the clamp jig 500 does not directly weld and fix the plurality of switch sensor housings 3 to the large-diameter concrete pipe line 20, the clamp jig 500 may be mounted on the outer periphery of the concrete pipe line 20. It is designed to be installed as a wrap.

The clamp jig 500 is a pair of bolted flange-type connecting portions (511, 512) for tightening the upper and lower ends of the semi-cylindrical curved portion, respectively, coupled to wrap one side and the other side of the concrete pipeline 20 Band portion 510 and; A watertight part 520 formed to have a planar area and a curved radius corresponding to the inner circumferential surface of the band part 510 and having a through hole 521 formed at a central part to measure flow velocity and ensure watertightness; Tightening means (530) such as a plurality of tightening bolts and nuts fastened to the flange-type connecting portions (511, 512) of the band portion (510); By using the marking tool and the overpass jig of the present invention described above, the thickness of the band part 510 is maintained while maintaining the installation angle (a) of the switch of the pair of multiple lines (for example, three lines or five lines). It is provided with a plurality of concrete converter sensor housing 30 installed through.

The clamp jig 500 is mounted as if the concrete pipe line 20 is wrapped around the site where a flow rate measurement is required.

Then, the operator inserts a biasing jig (not shown) for drilling such as a drill for concrete in the interior of each concrete converter sensor housing 30, the wall hole 21 in the wall of the concrete pipe line 20 Can be easily formed.

On the other hand, since the watertight portion 520 is interposed between the band portion 510 and the concrete pipeline 20, when the clamp jig 500 is mounted on the concrete pipeline 20 to measure the flow velocity, the pipeline 20 ) The fluid inside is not discharged to the outside.

In particular, the plurality of pairs of the switchers for measuring the flow rate to be mounted on the clamp jig 500, the through-hole of the concrete switch sensor housing 30 and the band portion 510, the through-hole 521 of the water-tight portion 520, concrete It passes through the concrete wall hole 21 of the conduit 20 and eventually is not disturbed to measure the flow rate of the fluid of the conduit 20.

As described above, the multi-line flowmeter installation apparatus and method of the present invention provides an overpass jig, an angular jig, a marking tool, and a housing mounting jig, so that all ultrasonic emission receptions can be made simply by adjusting the mounting angle of the overpass jig once. The installation position, installation angle and installation interval of the switching device sensor housing for the switching device can be installed on the pipe. Therefore, the installation work can be performed quickly and precisely. There is an advantage that can be done.

In addition, the multi-line flowmeter installation apparatus of the present invention further includes a set clamp jig, there is an advantage that can perform the flowmeter installation work in the concrete pipeline as well as the pipe.

Claims (8)

In a multi-line flowmeter installation apparatus for installing a multi-line ultrasonic emission transducer in a pipe to measure the flow rate, Including an overpass jig placed on top of the pipe, The overpass jig includes: a rail unit having a horizontal beam shape; A pair of runner blocks slidably inserted and temporarily fixed in the rail unit; An angle disk fixed to the bottom surface of the rail portion; A reference disk detachably stacked on the bottom of the angle disk and temporarily fixed to the pipe to rotate within a finite angle range; A leg part detachably attached to the bottom of the runner block to enable height adjustment; It consists of a plurality of interval jig arranged and fastened while maintaining a constant installation interval along the height direction on one side of the leg portion, Multi-line flow meter, characterized in that a plurality of switch sensor housings are installed in the pipe at the same time by detaching any one of the angle jig, marking tool, housing mounting jig to the bar insertion hole of the spacer jig using the jig bar. Mounting device. The method of claim 1, The angle jig is in contact with the pipe to adjust the mounting angle of the pedestrian bridge jig corresponding to the angle of installation of the sensor housing housing, multi-line flow meter installation apparatus characterized in that the inclined guide side of the same angle as the installation angle is formed . The method of claim 1, The marking tool has a hollow shaft shape and includes a first hollow portion having an outer diameter that can be inserted into a bar insertion hole of the spacer jig; A second hollow portion formed to be integrally penetrated to have a relatively large outer diameter at one side of the first hollow portion; And a laser pointer installed and inserted along the axis of the second hollow portion. The method of claim 1, The housing mounting jig is a multi-line flowmeter installation device, characterized in that for forming a screw hole detachably attached to the jig bar on one side, forming a bolt-shaped thread on the other outer circumference, the switch sensor housing is detachable by screwing. The method of claim 1, The angle disc comprises: a pair of arc-shaped guide holes symmetrical with each other in the front and rear portions of the angle disc and penetrated in the thickness direction of the angle disc so as to be engaged with the reference disc; And a rotation hole formed in the center of the angle disk. The method of claim 5, And the reference disk has a stud bolt protruding into the arc-shaped guide hole of the angle disk on the upper surface thereof, and a rotation center projection formed at the center of the reference disk. The method of claim 1, Further comprising a clamp jig set as an accessory of the multi-line flowmeter mounting device, wherein the clamp jig, It has a plurality of concrete converter sensor housing installed by the overpass jig and the marking tool, and formed flange-type connection for tightening bolts at the top and bottom of the semi-cylindrical curved portion, respectively, one side and the other side of the concrete pipeline A pair of band portions coupled together as if wrapped; A watertight portion formed to have a planar surface and a curved radius corresponding to the inner circumferential surface of the band portion, and a through hole formed in a central portion for measuring flow velocity and ensuring watertightness; Tightening means such as a plurality of tightening bolts and nuts fastened to the flanged connection part; And a plurality of concrete converter sensor housings installed to penetrate through the thickness of the band part while maintaining the installation angle of the switch of the pair of wires using the marking tool and the overpass jig. In the multi-line flowmeter installation method for installing a multi-line ultrasonic launch receiver in the pipe to measure the flow rate, A seating step of mounting a reference disc on the pipe; An alignment step of leveling the horizontal level of the reference disc using a level gauge; A mounting step of mounting an overpass jig on an upper portion of the reference disc as the center of rotation of the reference disc is inserted into the rotation hole of the angle disc; Marking the installation position of the transducer sensor housing relative to the center of the pipe using a laser beam of the laser pointer of the marking tool after temporarily fastening the marking tool to the interval jig of the leg portion of the overpass jig; Adjusting an angle of mounting of the via bridge jig by bringing the angle jig of the jig bar hypothesized into the gap jig into close contact with the pipe; A fixing step of fixing the reference disk fixed to the pipe and the angular disk fixed to the rail portion of the via bridge jig to fix the via bridge jig adjusted to the mounting angle to the pipe; And a mounting step of fixing the switch sensor housing assembled to the housing mounting jig to the pipe by using the housing mounting jig of the corresponding jig bar, which is hypothesized to the spacing jig, respectively. .

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