CN108844477B - Portable pipeline external diameter measuring device - Google Patents
Portable pipeline external diameter measuring device Download PDFInfo
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- CN108844477B CN108844477B CN201810687844.6A CN201810687844A CN108844477B CN 108844477 B CN108844477 B CN 108844477B CN 201810687844 A CN201810687844 A CN 201810687844A CN 108844477 B CN108844477 B CN 108844477B
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- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 238000005259 measurement Methods 0.000 abstract description 31
- 238000000034 method Methods 0.000 description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 12
- 239000000123 paper Substances 0.000 description 10
- 238000009434 installation Methods 0.000 description 9
- 239000000523 sample Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052744 lithium Inorganic materials 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
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Abstract
The invention discloses a portable pipeline outer diameter measuring device, and belongs to the field of pipeline flow measurement. The device comprises a laser reflecting device, a vertical rod, a sliding block, a laser emitter, a sliding rod and a sliding rod support, wherein the laser reflecting device is arranged on the vertical rod; the sliding measuring device can adjust the height of the sliding measuring device to enable the sliding rod I, the sliding rod II and the sliding rod support to be in a horizontal position; the sliding rod I and the sliding rod II can be supported by the supporting adjusting seat. The pipeline diameter measuring device forms a plane perpendicular to the central axis of the pipeline through the laser emitter, the upright rod, the sliding block and the laser reflecting device. The device can rapidly and accurately measure the outer diameter of the pipeline, can accurately determine the symmetrical points at two sides of the pipeline, has simple structure and good portability, and is particularly suitable for the requirement of the external clamp type ultrasonic flowmeter on the field measurement of the flow of the large-caliber pipeline.
Description
Technical Field
The invention belongs to the technical field of pipeline flow measurement, and particularly relates to a portable pipeline outer diameter measurement device.
Background
Along with the increasingly shortage of water resources and the gradual increase of water resource cost, the water saving becomes an important measure for the enterprise to respond to the national comprehensive promotion of water saving social construction, and is also an important content for the enterprise to realize sustainable development. The water saving needs to be realized by comprehensively knowing the water quantity and the water quality of various water delivery and drainage pipelines, ditches and the like in an enterprise, and the relation among the water taking, using and discharging of various water systems is clear. For various reasons, the enterprise cannot install the flowmeter in each pipeline and each ditch, so that the water balance test needs to be carried out regularly and the development condition of water-saving work needs to be known in time. The flow measuring instrument commonly used in water balance test work is an external clamp type (portable) ultrasonic flowmeter. The external clamp type (portable) ultrasonic flowmeter has the characteristics of no influence of medium and pressure in the pipeline, no damage to the pipeline, safety and reliability in the measurement process. According to the conditions of the pipeline such as material, diameter and inner wall rust, the outer diameter of the pipeline is firstly determined in the use process of the external clamp type ultrasonic flowmeter, and accurate measurement of the outer diameter of the pipeline is an important factor affecting measurement accuracy. The conventional pipeline external diameter measurement generally adopts vernier calipers, micrometer, theodolite measurement method, bow Gao Xian length method and the like, and the measurement methods have the problems of complex instrument, troublesome conversion or oversized and overweight measuring tool and difficult carrying when being used for measuring the large-caliber pipeline in actual application.
Chinese patent application CN200910035213.7 discloses a measuring unit of portable general major diameter measuring gauge, including a body, connect in first reference column and second reference column and first fixed establishment and second fixed establishment at body both ends, wherein the lateral surface of first reference column and second reference column is the face of cylinder, links up a series of measuring unit end to end in proper order and fixes on the measured object circumference surface just can measure object circumference surface diameter. This aspect is simple and theoretically allows any large diameter to be measured, but for large diameter pipes it is difficult to ensure that all gauges are on a single plane.
Chinese patent application CN201420152382.5 discloses a large diameter micrometer, including arc support, regulator, the regulator includes sleeve, lead screw, adjusting nut and supporting piece, and the sleeve is fixed perpendicularly on this arc support, and this lead screw that is equipped with the external screw thread runs through this sleeve, and is close to this lead screw one end and this adjusting nut screw thread matching connection back of this arc support centre of a circle, this supporting piece of perpendicular connection. The regulator of the support is additionally arranged on the large-diameter micrometer, so that the large-diameter workpiece can be easily measured, and the manual error caused by inconsistent strength of two persons or long-time exertion of hands is avoided, thereby reducing the error. But the device needs to change the arc support of equidimension to the pipeline of different pipe diameters, and complex operation.
Chinese patent application CN201610660161.2 discloses a diameter measuring apparatu in pipe, including three gyro wheel, two measuring arms and angular displacement sensor, but two measuring arms swivelling joint, and the junction sets up one of them gyro wheel, and the outer tip of two measuring arms respectively sets up another gyro wheel, and the gyro wheel passes through the shaft to be fixed to measuring arm on, and can roll, and the interval between the shaft hole of two measuring arms equals. The scheme is suitable for measuring the inner diameter and the outer diameter of the large-diameter circular tube, but the measurement is indirect measurement, conversion is needed, and the measurement is troublesome.
The Chinese patent application 201620687493.5 discloses a portable large-diameter measuring device and a measuring parameter calibration method thereof, wherein the large-diameter measuring device comprises an installation box, three groups of laser displacement sensors, a wireless transceiver module and a lithium battery, wherein the three groups of laser displacement sensors, the wireless transceiver module and the lithium battery are installed in the installation box; the mounting box is arc-shaped, the three groups of laser displacement sensors are sequentially arranged according to the arc rotation direction of the mounting box, and light rays emitted by the three groups of laser displacement sensors are directed to the arc center of the mounting box through the inner arc surface of the mounting box; although the device can accurately measure the diameter of a large revolving body workpiece in a non-contact manner in any occasion, the device is not suitable for measuring the outer diameter of a pipeline and has complex calculation.
Chinese patent application CN201620600407.2 discloses a major diameter excircle measuring tool, and the length of main measuring tape is adjustable, and main measuring tape's both ends respectively demountable installation have left cardboard and right cardboard, and the card face parallel arrangement of holding of left cardboard and right cardboard, demountable installation have the percentage table on the right cardboard, and the gauge head of percentage table stretches out the card face of holding of right cardboard and holds the face perpendicular setting of holding of left cardboard. Although the measuring tool can directly detect the excircle to obtain the machining size without conversion by other measuring tools, thereby eliminating indirect measurement errors, the clamping plates are required to be replaced for pipelines with different diameters, and meanwhile, uncertainty exists in position determination of the dial indicator and the operation is troublesome.
Chinese patent application CN201620687493.5 discloses a major diameter cambered surface external diameter measuring device, comprises measuring frame, adjustable spacing measuring stick base and percentage table, and the measuring frame is semicircle arc structure, and adjustable spacing measuring stick is assembled on adjustable spacing measuring stick base and is fixed at the both ends of measuring frame through the welding mode, and the percentage table passes through the percentage table frame and sets up at the both ends of measuring frame. The device can measure the outer diameter of the large-diameter cambered surface and can directly read, but the device is required to be provided with different measuring frames according to different pipe diameters, and the device is difficult to align the outer diameter.
Chinese patent application CN201720263478.2 describes a pipeline diameter measuring device with adjustable range, which is composed of a fixed ruler, a movable ruler, a fixed rod and a movable rod, and by adjusting the lengths of the four rulers (rods), a figure similar to a figure of a Chinese character 'kou' is formed to determine the measuring point. However, the main problem is that the fixed rod and the movable rod are square telescopic rods, so that when the large-caliber pipeline is measured, the upper width and the lower width of the fixed rod and the movable rod are inconsistent along with the extension of the telescopic rods, the contact points of the fixed rod and the movable rod with the pipeline are not symmetrical in circle center, and certain deviation exists in measurement.
The factors influencing the measurement accuracy of the external clamp type ultrasonic flowmeter are important influencing factors besides the outer diameter of the pipeline, and the accurate selection of the installation points. External clamp type ultrasonic flow meters commonly employ V-method, Z-method, and the like for flow measurement. The V method is to install two sensors on the same side of the pipeline to be measured for measurement, and the two sensors are often installed on a scale track so as to ensure that the middle axial surfaces of the two sensors and the central axis of the pipeline to be measured are on the same plane, and the V method is generally suitable for measuring small-caliber pipelines. The V method measurement has the defects that the conduction signal of the pipeline with serious scale is weak or no conduction signal exists, the measurement accuracy is low, and the correct medium flow value in the pipeline cannot be reflected. The Z method measurement is to locate two sensors on two sides of the pipeline, to determine the position of one sensor, to measure out the other point at the horizontal position according to the installation distance, and to measure out the symmetry point of the point on the other side of the pipeline. The Z method has the advantages of strong conduction signal and is suitable for measuring the fluid in the large-caliber pipeline. However, one problem in the measurement by adopting the Z method is that two sensors are respectively arranged on two sides of a pipeline, and it is difficult to ensure that two measuring points and the central axis of the pipeline are in the same plane, so that when the measurement is performed, signals are weak or the signals cannot be received, the position of a probe needs to be frequently adjusted, time and labor are wasted, and especially the measurement effect on a large-diameter pipeline with DN600 or more is larger.
Xue Meihua and Gao Jianjie (Industrial Meter, 2004, vol. 14, 5) describe the method of mounting the ultrasonic flowmeter probe V and Z. Firstly, standard paper is manufactured, marking lines are drawn on paper tapes, then the standard paper is wound around a pipe for one circle, the marking lines of the standard paper are prolonged, straight lines are drawn on a pipeline, then a circumferential line is drawn on the pipeline along the standard paper, and the circumferential line intersects with extension lines of the marking lines. When the V method is adopted for installation, fixing the device position of one probe on the extension line, and then measuring out the position of the other probe; when the Z method is adopted for installation, a circumferential line is drawn on the pipeline along the other side of the standard paper, the circumferential line is intersected with the extension line of the original standard line, the standard paper moves along the circumference on the basis of a straight line where two points intersected with the standard line are located, the marking line on the standard paper is prolonged again at the circumference of the 1/2 probe, a straight line is drawn on the pipeline, and the straight line is intersected with the two circumferential lines on the pipeline, so that the installation position of the Z method can be determined. Although the method is simpler, the problems that the paper tape is easy to damage and the paper tape can not be completely clung to the pipeline to cause inaccurate measurement for the approximate straight pipe with a slight radian exist in the operation process.
The chinese patent application cn201220205029.X describes an ultrasonic probe mounting fixture, two magnetic seats are connected together by a track gauge, and the device is suitable for V-method measurement, but not for Z-method measurement.
Chinese patent application CN201320065430.2 describes a portable ultrasonic flowmeter field detection Z positioner, a frame composed of a first frame, a second frame, a third frame and a fourth frame, wherein the four frames are all telescopic and the pull rod is provided with length scales. The device can improve the detection timeliness of the small-caliber pipeline, but the device uses the telescopic pull rod, so that the problems of high operation difficulty, easy deformation, inaccurate positioning and the like exist in the measurement of the large-caliber pipeline in use.
Disclosure of Invention
Aiming at the problems of the existing external clamp type ultrasonic flowmeter when the flow of the large-caliber pipeline is measured, the invention provides the portable pipeline external diameter measuring device for the external clamp type ultrasonic flowmeter when the flow of the large-caliber pipeline is measured, and the accuracy of the measuring result can be improved.
The invention is realized by adopting the following technical scheme:
a portable pipeline outer diameter measuring device comprises two laser reflecting devices, two vertical rods, two sliding blocks, two laser transmitters, a sliding rod I, a sliding rod II and a sliding rod bracket; wherein,
each laser reflecting device is arranged on a corresponding vertical rod, the vertical rods are vertically arranged on corresponding sliding blocks, and the sliding blocks are horizontally arranged on a sliding measuring device consisting of a sliding rod I, a sliding rod II and a sliding rod bracket; the sliding measuring device can adjust the height of the sliding measuring device to enable the sliding rod I, the sliding rod II and the sliding rod support to be in a horizontal position; the sliding rod I and the sliding rod II are supported by a supporting and adjusting seat;
the upper part of the sliding block is provided with a scale pointer, and the central position of the upper part of the sliding block is provided with a screw hole which is matched with the hollow stud end of the upright rod; the central position of the lower part of the sliding block is provided with a screw hole, the central axis of the lower screw hole is coincident with the central axis of the upper screw hole, and the upper screw hole and the lower screw hole are communicated; the screw hole at the lower part of the sliding block is matched with the laser transmitter, and a power supply box and a switch of the laser transmitter are fixed on the sliding block; the laser reflecting device consists of a laser reflecting mirror and a base, the base is a hollow stud, and the laser reflecting mirror is arranged at the top of the base;
when the device is used, the fixed sliding measuring device is placed below a pipeline to be measured and is vertical to the pipeline to be measured, a laser transmitter power supply is turned on, the angle of a laser reflecting device is adjusted, laser on one side of the pipeline to be measured is reflected by a laser reflecting mirror and enters a hollow pipeline formed by the laser reflecting device, a vertical rod and a sliding block on the other side of the pipeline to be measured, a plane vertical to the central axis of the pipeline to be measured is formed, then the sliding block on one side of the pipeline to be measured is adjusted, the vertical rod is contacted with the outer wall of the pipeline to be measured, then the sliding block on the other side of the pipeline to be measured is adjusted, the outer diameter of the pipeline to be measured is the distance between scale pointers on the sliding blocks at two ends of the pipeline to be measured minus the diameter of the vertical rod; the contact points of the upright posts and the two sides of the pipeline to be tested are symmetrical points of the two sides of the pipeline to be tested.
The invention is further improved in that the laser reflector forms an included angle of 45 degrees with the horizontal plane at the top of the base.
The invention is further improved in that the upright rod is a hollow straight rod, one end of the upright rod is a screw hole, the other end of the upright rod is a hollow stud, the base stud of the laser reflecting device is matched with the screw hole of the upright rod, and the hollow stud end of the upright rod is matched with the screw hole of the upright rod; the upright posts are made of metal or hard plastic.
The invention is further improved in that the sliding support leg with the locking device is arranged on the sliding block;
the middle shaft surface of the sliding block is coincident with the central axis of the vertical rod and is perpendicular to the central axis of the sliding rod I or the sliding rod II, and the scale pointer is fixed on the sliding block by the fixing stud.
The invention is further improved in that the laser transmitter is cylindrical and is provided with external threads.
The invention is further improved in that one end of the sliding rod I is provided with a screw hole, the other end of the sliding rod I is provided with a stud, the stud is matched with the screw hole, and the central axis of the sliding rod I coincides with the screw holes at the two ends of the sliding rod I and the central axis of the stud; screw holes are formed in two ends of the sliding rod II and matched with the stud of the sliding rod I, and the central axis of the sliding rod II coincides with the central axes of the screw holes at two ends of the sliding rod II; full length scales are arranged on the sliding rod I and the sliding rod II.
The invention is further improved in that a movable level is arranged on the sliding rod I or the sliding rod II, and is provided with a semicircular column opening which is matched with the outer diameter of the sliding rod.
The invention is further improved in that the upper part of the slide bar bracket is provided with a level gauge, the side part of the slide bar bracket is provided with a round hole, and the slide bar bracket is fastened with the slide bar I and the slide bar II through bolts; the lower part is provided with an adjusting support leg which is connected with the slide bar bracket through a screw hole.
The invention is further improved in that one end of the adjusting support leg is a stud, and the other end of the adjusting support leg is a flat bottom adjusting block.
The invention is further improved in that the base of the laser reflecting device coincides with the central axis of the vertical rod, the through holes of the upper screw hole and the lower screw hole of the sliding block and the laser transmitter.
The invention has the following beneficial technical effects:
the device for measuring the outer diameter of the pipeline can rapidly and accurately measure the outer diameter of the pipeline, can accurately determine symmetrical points on two sides of the pipeline, can solve the problem that two points are inaccurately determined when the external clamp type ultrasonic flowmeter adopts a Z method for testing, and is particularly suitable for measuring the outer diameter of the large-caliber pipeline and testing the flow. The invention has simple structure and good portability, and can meet the field measurement requirement.
Drawings
FIG. 1 is a schematic diagram of the structure of the device of the present invention;
FIG. 2 is a front view of a slider of the device of the present invention;
FIG. 3 is a left side view of a slider of the device of the present invention;
FIG. 4 is a top view of a slider of the device of the present invention;
FIG. 5 is a front view of a slide measurement device of the present invention;
FIG. 6 is a left side view of a slide measurement device of the present invention;
FIG. 7 is a top view of a slide measurement device of the present invention;
FIG. 8 is a front view of a mobile level of the apparatus of the present invention;
FIG. 9 is a left side view of a mobile level of the apparatus of the present invention;
FIG. 10 is a top view of a mobile level of the apparatus of the present invention;
fig. 11 is a schematic view of a support adjustment seat of the device of the present invention.
In the figure: 1. the laser reflector comprises a laser reflector, 2, a laser reflector, 3, a base, 4, a vertical rod, 5, a sliding block, 6, sliding supporting feet, 7, a laser emitter, 8, a power box, 9, a switch, 10, a scale pointer, 11, a fixed stud, 12, a locking device, 13, a sliding rod support, 14, a level meter, 15, a bolt, 16, a round hole, 17, an adjusting supporting foot, 18, a screw hole, 19, a sliding rod I, 20, a sliding rod II, 21, a sliding measuring device, 22, a movable level meter, 23 and a supporting adjusting seat.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1, the portable pipeline outer diameter measuring device provided by the invention comprises a laser reflecting device 1, a vertical rod 4, a sliding block 5, a laser emitter 7, a sliding rod I19, a sliding rod II 20 and a sliding rod bracket 13.
The laser reflection device 1 consists of a laser reflection mirror 2 and a base 3, wherein the base 3 is a hollow stud, and the laser reflection mirror 2 is arranged at the top of the base 3 and forms an included angle of 45 degrees with the horizontal plane of the top of the base 3.
The vertical rod 4 is a hollow straight rod, one end of the vertical rod is a screw hole, the other end of the vertical rod is a hollow stud, the stud of the base 3 of the laser reflecting device 1 is matched with the screw hole of the vertical rod 4, the hollow stud end of the vertical rod 4 is matched with the screw hole of the vertical rod, and the plurality of sections of vertical rods 4 can be connected with each other through the screw hole and the stud; the upright rod 4 is made of metal or hard plastic.
As shown in fig. 1 to 4, a screw hole is arranged at the center of the upper part of the sliding block 5 and is matched with the hollow stud end of the upright rod 4; a screw hole is formed in the center of the lower part of the sliding block 5, the central axis of the lower screw hole is coincident with the central axis of the upper screw hole, and the upper screw hole and the lower screw hole are communicated; the screw hole at the lower part of the sliding block 5 is matched with the laser emitter 7, and the laser emitter 7 is cylindrical and provided with external threads; the power box 8 and the switch 9 of the laser transmitter 7 are fixed on the slide 5. The slide 5 is provided with a locking device 12 on the slide support leg 6. The upper part of the sliding block 5 is provided with a scale pointer 10, wherein the axial surface coincides with the central axis of the vertical rod 4 and is vertical to the central axis of the sliding rod I19 or the sliding rod II 20, and the scale pointer 10 is fixed on the sliding block 5 by a fixed stud 11.
As shown in fig. 5-11, one end of the sliding rod I19 is a screw hole, the other end is a stud, the stud is matched with the screw hole, and the central axis of the sliding rod I19 coincides with the screw holes at the two ends and the central axis of the stud; screw holes are formed in two ends of the sliding rod II 20 and matched with the stud of the sliding rod I19, and the central axis of the sliding rod II 20 coincides with the central axes of the screw holes at two ends of the sliding rod II; the slide bar I19 is carved with full length scales, and the length from the screw hole end to the front end of the stud is preferably 500mm, 750mm or 1000mm. The slide bar II 20 is carved with full length scales, and the length of the scale marks is 500mm, 750mm or 1000mm from the screw hole at one end to the screw hole end at the other end. The movable level gauge 22 can be placed on the slide rod I19 or the slide rod II 20, and the movable level gauge 22 is provided with a semicircular column type opening which is matched with the outer diameter of the slide rod. The upper part of the slide bar bracket 13 is provided with a level 14, the side part is provided with a round hole 16, and the slide bar bracket is fastened with a slide bar I19 and a slide bar II 20 through bolts 15; the lower adjusting leg 17 is connected with the slide bar bracket 13 through a screw hole 18. One end of the adjusting support 17 is a stud, and the other end is a flat bottom adjusting block.
The base 3 of the laser reflecting device 1 is overlapped with the central axis of the vertical rod 4, the upper and lower screw hole through holes of the sliding block 5 and the laser emitter 7.
During measurement, the upper part of the sliding block 5 is sequentially provided with the vertical rod 4 and the laser reflecting device 1, and the lower part is provided with the laser emitter 7. The laser reflection device 1 is installed in the screw hole of the vertical rod 4 through the base 3 screw bolt, the vertical rod 4 can be connected to a proper height through the screw bolt and the screw hole of the vertical rod 4, the laser transmitter 7 is installed in the screw hole at the lower part of the sliding block 5, and the laser transmitter 7 is connected with the power box 8 through a wire. The slide bar I19 can be connected with each other through the stud and the screw hole of the slide bar I19 according to the diameter difference of the pipeline to be detected, the slide bar I19 is connected with the slide bar II 20 through the stud, and the connected slide bar I19 and the slide bar II 20 are fixed on the slide bar bracket 13 through the bolts 15. The fixed sliding measuring device 21 is placed below the pipeline to be measured and is perpendicular to the pipeline to be measured, then the connected laser reflecting device 1, the vertical rod 4, the sliding block 5 and the laser transmitter 7 are placed on the sliding measuring device 21 and positioned on one side of the pipeline to be measured, and meanwhile, the other set of laser reflecting device 1, the vertical rod 4 and the sliding block 5 are placed on the sliding measuring device 21 and positioned on the other side of the pipeline to be measured after being connected. A movable level 22 is arranged above the slide bar I19 and the slide bar II 20, and a supporting adjustment seat 23 can be arranged below the slide bar I19 and the slide bar II 20 according to requirements, so that the adjusting support 17 and the supporting adjustment seat 23 can be adjusted, and the sliding measuring device 21 is ensured to be in a horizontal position. And adjusting scale pointers 10 on sliding blocks 5 on two sides of the pipeline to be tested, so that the axial surfaces of the scale pointers are coincident with the central axis of the vertical rod 4 and are perpendicular to the central axis of the sliding rod I19 or the sliding rod II 20. The power supply of the laser transmitter 7 is turned on, the angle of the laser reflecting device 1 is adjusted, laser on one side of a pipeline to be tested is reflected by the laser reflecting mirror 2 and enters a hollow pipeline formed by the laser reflecting device 1, the vertical rod 4 and the sliding block 5 on the other side of the pipeline to be tested, a plane perpendicular to the central axis of the pipeline to be tested is formed, then the sliding block 5 on one side of the pipeline to be tested is adjusted, the vertical rod 4 is contacted to the outer wall of the pipeline to be tested, the locking device 12 on the sliding supporting leg 6 is locked, the laser reflecting device 1, the vertical rod 4 and the sliding block 5 are kept fixed, then the sliding block 5 on the other side of the pipeline to be tested is adjusted, the vertical rod 4 is contacted to the outer wall of the pipeline to be tested, and the locking device 12 on the sliding supporting leg 6 is locked. The outer diameter of the pipeline to be measured is the distance between scale pointers 10 on sliding blocks 5 at two ends of the pipeline to be measured minus the diameter of the vertical rod 4. The contact points of the upright rods 4 and the two sides of the pipeline to be tested are symmetrical points of the two sides of the pipeline to be tested.
In addition, the specific embodiments described in the present specification may vary in the shape, the names, etc. of the components, and the above description is merely illustrative of the present invention. All equivalent or simple changes of the structure, characteristics and principle according to the inventive concept are included in the protection scope of the present patent. Various modifications or additions may be made to the described embodiments by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined by the claims.
Claims (8)
1. The portable pipeline outer diameter measuring device is characterized by comprising two laser reflecting devices (1), two vertical rods (4), two sliding blocks (5), two laser transmitters (7), a sliding rod I (19), a sliding rod II (20) and a sliding rod bracket (13); wherein,
each laser reflecting device (1) is arranged on a corresponding vertical rod (4), the vertical rod (4) is vertically arranged on a corresponding sliding block (5), and the sliding block (5) is horizontally arranged on a sliding measuring device (21) consisting of a sliding rod I (19), a sliding rod II (20) and a sliding rod bracket (13); the sliding measuring device (21) can adjust the height of the sliding measuring device to enable the sliding rod I (19), the sliding rod II (20) and the sliding rod bracket (13) to be in a horizontal position; the sliding rod I (19) and the sliding rod II (20) are supported by a supporting and adjusting seat (23);
the upper part of the sliding block (5) is provided with a scale pointer (10), the central position of the upper part of the sliding block (5) is provided with a screw hole which is matched with the hollow stud end of the upright rod (4); a screw hole is formed in the center of the lower part of the sliding block (5), the central axis of the lower screw hole is coincident with the central axis of the upper screw hole, and the upper screw hole and the lower screw hole are communicated; the screw hole at the lower part of the sliding block (5) is matched with the laser transmitter (7), and a power supply box (8) and a switch (9) of the laser transmitter (7) are fixed on the sliding block (5); the laser reflecting device (1) consists of a laser reflecting mirror (2) and a base (3), wherein the base (3) is a hollow stud, and the laser reflecting mirror (2) is arranged at the top of the base (3);
when the device is used, the fixed sliding measuring device (21) is placed below a pipeline to be measured and is vertical to the pipeline to be measured, a power supply of the laser transmitter (7) is turned on, the angle of the laser reflecting device (1) is adjusted, laser on one side of the pipeline to be measured is reflected into a hollow pipeline formed by the laser reflecting device (1), the vertical rod (4) and the sliding block (5) on the other side of the pipeline to be measured through the laser reflecting mirror (2), a plane vertical to the central axis of the pipeline to be measured is formed, then the sliding block (5) on one side of the pipeline to be measured is adjusted, the vertical rod (4) is contacted to the outer wall of the pipeline to be measured, and then the sliding block (5) on the other side of the pipeline to be measured is adjusted, so that the vertical rod (4) is contacted to the outer wall of the pipeline to be measured, and the outer diameter of the vertical rod (4) is subtracted from the distance between scale pointers (10) on the sliding blocks (5) on two ends of the pipeline to be measured; the contact points of the upright rods (4) and the two sides of the pipeline to be tested are symmetrical points of the two sides of the pipeline to be tested;
the laser reflector (2) forms an included angle of 45 degrees with the horizontal surface of the top of the base (3);
a movable level meter (22) is arranged on the sliding rod I (19) or the sliding rod II (20), and the movable level meter (22) is provided with a semicircular column type opening and is matched with the outer diameter of the sliding rod.
2. The portable pipeline outer diameter measuring device according to claim 1, wherein the vertical rod (4) is a hollow straight rod, one end of the vertical rod is a screw hole, the other end of the vertical rod is a hollow screw bolt, the screw bolt of the base (3) of the laser reflecting device (1) is matched with the screw hole of the vertical rod (4), and the hollow screw bolt end of the vertical rod (4) is matched with the screw hole of the vertical rod; the upright rod (4) is made of metal or hard plastic.
3. A portable pipe outer diameter measuring device according to claim 1, characterized in that the slide block (5) is provided with a sliding support leg (6) with a locking device (12);
the middle shaft surface of the sliding block (5) is coincident with the central axis of the vertical rod (4), is perpendicular to the central axis of the sliding rod I (19) or the sliding rod II (20), and the scale pointer (10) is fixed on the sliding block (5) through the fixed stud (11).
4. A portable pipe outer diameter measuring device according to claim 1, characterized in that the laser transmitter (7) is cylindrical with an external thread.
5. The portable pipeline outer diameter measuring device according to claim 1, wherein one end of the sliding rod I (19) is a screw hole, the other end of the sliding rod I is a stud, the stud is matched with the screw hole, and the central axis of the sliding rod I (19) coincides with the central axes of the screw holes at the two ends and the stud; screw holes are formed in two ends of the sliding rod II (20) and matched with the stud of the sliding rod I (19), and the central axis of the sliding rod II (20) coincides with the central axes of the screw holes at two ends of the sliding rod II; full length scales are arranged on the sliding rod I (19) and the sliding rod II (20).
6. The portable pipeline outer diameter measuring device according to claim 1, wherein a level gauge (14) is arranged at the upper part of the sliding rod support (13), a round hole (16) is arranged at the side part, and the portable pipeline outer diameter measuring device is fastened with a sliding rod I (19) and a sliding rod II (20) through bolts (15); the lower part is provided with an adjusting support leg (17) and is connected with the slide bar bracket (13) through a screw hole (18).
7. A portable pipe outer diameter measuring device according to claim 6, characterized in that the adjusting leg (17) is a stud at one end and a flat bottom adjusting block at the other end.
8. The portable pipeline outer diameter measuring device according to claim 1, wherein the base (3) of the laser reflecting device (1) is overlapped with the central axes of the upright rod (4), the upper and lower screw hole through holes of the sliding block (5) and the laser emitter (7).
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| CN201810687844.6A CN108844477B (en) | 2018-06-28 | 2018-06-28 | Portable pipeline external diameter measuring device |
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| CN201810687844.6A CN108844477B (en) | 2018-06-28 | 2018-06-28 | Portable pipeline external diameter measuring device |
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| CN108844477B true CN108844477B (en) | 2024-04-02 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109654975A (en) * | 2018-12-20 | 2019-04-19 | 铜陵市特种设备监督检验中心 | Measure the device and its application method of high-altitude outer diameter tube |
| CN109540551A (en) * | 2019-01-15 | 2019-03-29 | 北京市计量检测科学研究院 | A kind of contactless side slid platform sound state calibrating installation |
| CN109813241B (en) * | 2019-03-21 | 2024-03-19 | 马鞍山恒瑞测量设备有限公司 | Thickness gauge special for hot rolled strip steel |
| CN111879247B (en) * | 2020-08-03 | 2022-05-20 | 海伯森技术（深圳）有限公司 | Device for measuring specification of shaft hole |
| CN113503816B (en) * | 2021-07-30 | 2024-12-27 | 杭州垦驱智能科技有限公司 | A laser system probe structure |
| CN113654471A (en) * | 2021-08-04 | 2021-11-16 | 河北光兴半导体技术有限公司 | Method and device for measuring thickness of glass tube |
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