CN113819869A - Wall thickness measuring method and wall thickness measuring device - Google Patents
Wall thickness measuring method and wall thickness measuring device Download PDFInfo
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- CN113819869A CN113819869A CN202111080010.7A CN202111080010A CN113819869A CN 113819869 A CN113819869 A CN 113819869A CN 202111080010 A CN202111080010 A CN 202111080010A CN 113819869 A CN113819869 A CN 113819869A
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- 239000000523 sample Substances 0.000 claims abstract description 54
- 238000005070 sampling Methods 0.000 claims abstract description 19
- 238000000691 measurement method Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 description 7
- 239000000463 material Substances 0.000 description 4
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- 230000012447 hatching Effects 0.000 description 2
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- 239000004677 Nylon Substances 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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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Abstract
The application discloses wall thickness measuring method and wall thickness measuring device belongs to thickness measuring technical field, and the wall thickness measuring method includes: installing a positioning tool at a first position of the elbow; sampling at least part of positioning holes on the positioning tool, and displaying a first record carrier on a display screen of a host according to a sampling result, wherein the first record carrier comprises a plurality of first data recording positions, and the sampled at least part of positioning holes correspond to the first data recording positions one by one; the probe sequentially extends into each sampled positioning hole, the wall thickness value of the corresponding position of each positioning hole is measured, and each first data recording position records the measured wall thickness value respectively to form a first data recording library; disassembling the positioning tool, and reinstalling the positioning tool at the first position after a time t; and displaying the second record carrier by the host, re-measuring the wall thickness value of the corresponding position of each sampled positioning hole by the probe, and recording the wall thickness value at the corresponding second data recording position to form a second data recording library.
Description
Technical Field
The application belongs to the technical field of thickness measurement, and particularly relates to a wall thickness measuring method and a wall thickness measuring device.
Background
In the wall thickness detection of the high-pressure movable elbow, a probe is usually dropped on a target position of the outer surface of the movable elbow to measure the wall thickness of the target position.
At present, in order to solve the wall thickness change rule, the wall thickness value of the same measuring point at different time stages needs to be detected, but in actual operation, after a period of time, a probe is difficult to accurately fall on the same target position, the wall thickness of the same measuring point cannot be accurately measured, front and back comparison data cannot be formed, and the wall thickness data of the movable elbow at different time stages cannot be effectively analyzed.
Disclosure of Invention
The embodiment of the application aims to provide a wall thickness measuring method and a wall thickness measuring device, and the problems that wall thickness data of the same measuring point at different stages cannot be accurately measured and front and rear wall thickness data cannot be compared in the related technology can be solved.
In a first aspect, an embodiment of the present application provides a wall thickness measuring method, including:
s1, mounting the positioning tool at a first position of the elbow;
s2, sampling at least part of all the positioning holes on the positioning tool, and displaying a first record carrier on a display screen of a host according to the sampling result, wherein the first record carrier includes a plurality of first data recording positions, and the sampled at least part of the positioning holes correspond to the first data recording positions one to one;
s3, sequentially extending the probe into each sampled positioning hole, measuring the wall thickness value of the elbow position corresponding to each positioning hole, and respectively recording the wall thickness value measured by the probe at the corresponding positioning hole at each first data recording position to form a first data recording library;
s4, disassembling the positioning tool, and after a time t, reinstalling the positioning tool at the first position of the elbow;
s5, displaying a second record carrier on a display screen of the host, wherein the second record carrier comprises a plurality of second data recording positions, and at least part of the positioning holes sampled are in one-to-one correspondence with the second data recording positions;
and S6, the probe sequentially extends into each sampled positioning hole again, the wall thickness value of the elbow position corresponding to each positioning hole is measured, and the wall thickness value measured by the probe at the corresponding positioning hole is recorded at each second data recording position to form a second data recording library.
In a second aspect, an embodiment of the present application further provides a wall thickness measuring device, which is applied to an elbow, the elbow is provided with an axial positioning reference and a circumferential positioning reference, the wall thickness measuring device includes:
the positioning tool is detachably mounted on the outer surface of the elbow and provided with an axial positioning structure and a circumferential positioning structure, the axial positioning structure is aligned with the axial positioning reference along the circumferential direction of the elbow, the circumferential positioning structure is aligned with the circumferential positioning reference along the axial direction of the elbow, and the positioning tool is provided with a plurality of positioning holes;
the probe can extend into the positioning hole to measure the wall thickness value of the corresponding position under the condition that the positioning tool is installed on the outer surface of the elbow;
the host computer, the host computer with the probe electricity is connected, just the host computer includes and is used for showing the display screen of wall thickness value.
In the embodiment of the application, in different time stages, the positioning tool is installed at the same position of the elbow, at least part of the positioning holes in the positioning tool are sampled again, and then the probe sequentially measures the wall thickness values of the corresponding positions of the positioning holes, so that different time stages can be measured, the wall thickness data of the same measuring point, namely a first data record base and a second data record base are formed, all wall thickness values recorded by the first data record base and all wall thickness values recorded by the second data record base are compared and analyzed subsequently, and the wall thickness change rule can be visually known.
And, the elbow usually includes entrance point and exit end, the elbow part degree of washout that is close to the entrance point is more serious, the elbow part degree of washout that is close to the exit end is less relatively, so the pipe wall of the elbow part that is close to the entrance point is relatively thin, through to different time stages, the data contrast of same measuring point, can know the wall thickness value scope of the elbow part that the degree of washout is more serious, know and erode wearing and tearing condition and wall thickness change law, can carry out the position exchange with the elbow part that is close to the entrance point and the elbow part that is close to the exit end under the necessary condition, will regard as the elbow of exit end before to replace the elbow of entrance point, so, the wall thickness that lies in the elbow of entrance point at this moment is greater than the wall thickness that lies in the elbow of exit end, can realize the continuation of elbow and use, thereby improve the utilization ratio of elbow.
Drawings
FIG. 1 is a flow chart of a wall thickness measurement method disclosed in an embodiment of the present application;
FIG. 2 is a flow chart of a wall thickness measurement method disclosed in another embodiment of the present application;
FIG. 3 is a flow chart of a wall thickness measurement method disclosed in yet another embodiment of the present application;
FIG. 4 is a schematic diagram of a sample positioning hole and a table according to an embodiment of the present disclosure;
FIG. 5 is a schematic structural diagram of a wall thickness measuring device disclosed in an embodiment of the present application;
fig. 6 is a schematic view of the positioning tool disclosed in the embodiment of the present application after being installed;
fig. 7 is a schematic structural diagram of a positioning tool disclosed in an embodiment of the present application.
Description of reference numerals:
100-positioning a tool; 110-a body portion; 111-a first end face; 112-notch; 113-a positioning hole; 120-a clamping part;
200-bending head; 210-an annular projection; 211-annular locating surface; 220-mounting holes;
300-a probe;
400-host.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that embodiments of the application may be practiced in sequences other than those illustrated or described herein, and that the terms "first," "second," and the like are generally used herein in a generic sense and do not limit the number of terms, e.g., the first term can be one or more than one.
The wall thickness measuring method and the wall thickness measuring device provided by the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Referring to fig. 1 to 4, a wall thickness measuring method disclosed in an embodiment of the present application includes:
s1, the positioning tool 100 is installed at the first position of the elbow 200. After the positioning tool 100 is installed, the position of the positioning tool 100 defines a range for subsequent wall thickness measurement of the probe 300.
It should be noted that the "first position" does not refer to a fixed position, but refers to a position of the outer surface of the elbow 200.
Wherein, location frock 100 is wall thickness measuring device's part, wall thickness measuring device mainly includes location frock 100, probe 300 and host computer 400, and probe 300 is connected with host computer 400 electricity, and probe 300 is used for falling the wall thickness of the surface in order to measure corresponding position of elbow 200, and the display screen of host computer 400 is used for showing the wall thickness value that measures, and location frock 100 helps fixing a position the position of falling of probe 300 at the surface of elbow 200, avoids the deviation to appear in the position of falling of probe 300.
Specifically, the positioning tool 100 may be mounted on the elbow 200 in a plurality of ways, and the mounting ways may be clamping, bolt connection, and the like, and of course, the mounting ways are not limited to the above. In addition, it should be noted that the positioning tool 100 can be subsequently detached from the outer surface of the elbow 200.
S2, sampling at least a part of the positioning holes 113 in all the positioning holes 113 located on the positioning tool 100, in this embodiment, the positioning tool 100 is provided with a plurality of positioning holes 113, and the sampling can be performed on part of the positioning holes 113 in all the positioning holes 113, or can be performed on all the positioning holes 113. And displaying a first record carrier on a display screen of the host 400 according to the sampling result, wherein the first record carrier comprises a plurality of first data recording positions, each first data recording position records a wall thickness value, and at least part of the positioning holes 113 which are sampled correspond to the first data recording positions one by one. Thus, the wall thickness value at the corresponding position of each positioning hole 113 is different, and the first data recording position can be used to record the wall thickness value at the corresponding position of the positioning hole 113.
Specifically, the number of at least part of the positioning holes 113 sampled may be the same as the number of the first data recording positions, and the number of the first data recording positions may be larger than the number of the positioning holes 113 sampled. That is, each of the sampled pilot holes 113 has a first data recording position for recording the wall thickness value of the corresponding position. In the present embodiment, the number of at least part of the positioning holes 113 sampled is the same as the number of the first data recording positions.
S3, the probe 300 sequentially extends into each of the positioning holes 113 to be sampled, and measures the wall thickness value of the elbow 200 corresponding to each positioning hole 113, each first data recording position records the wall thickness value measured by the probe 300 at the corresponding positioning hole 113, and after the wall thickness values are recorded at all the first data recording positions, a first data recording library is formed, and at this time, the wall thickness measuring process at a certain time stage at a measuring point is completed. Specifically, in the case where the number of the positioning holes 113 to be sampled is plural, the probe 300 may sequentially extend into each positioning hole 113 along the fixed direction, and of course, the probe 300 may not sequentially extend along the fixed direction for measurement, and in short, the extending sequence of the probe 300 is not limited.
Alternatively the first record carrier may be a table and the first data recording locations may be cells in the table.
And S4, detaching the positioning tool 100, and reinstalling the positioning tool 100 at the first position of the elbow 200 after the interval time t. The time t may be 10 days, 15 days, 20 days, or the like, and refers to a period of time during which the elbow 200 is put into use again, and in this period of time, since the elbow 200 is put into use again, the wall thickness value of the elbow 200 changes again, and thus the wall thickness measurement needs to be performed again.
Specifically, in the case that the positioning tool 100 completely fits the outer surface of the elbow 200, the first position is a position at which the positioning tool 100 completely fits the outer surface of the elbow 200. That is, the positioning tool 100 is attached to the elbow 200 at the first position, as long as the positioning tool 100 is attached to the elbow 200.
When the positioning tool 100 and the surface of the elbow 200 are not completely adhered to each other, the positioning tool 100 can be attached to the outer surface of the elbow 200, but the attachment position of the positioning tool 100 is not fixed, and a plurality of attachment positions may be provided. In order to ensure that the positioning tool 100 can be remounted at the first position, a measurer may mark the outer surface of the elbow 200 in the first mounting process, where a certain position of the positioning tool 100 corresponds to the mark, and then in the fourth mounting process, the same position of the positioning tool 100 corresponds to the mark again, so as to ensure that the positioning tool 100 is remounted at the first position.
S5, displaying a second record carrier on the display screen of the host 400, wherein the second record carrier comprises a plurality of second data recording positions, and the sampled at least part of the positioning holes 113 are in one-to-one correspondence with the second data recording positions. Thus, the wall thickness value at the corresponding position of each pilot hole 113 is different, and the second data recording position can be used to record the wall thickness value at the corresponding position of the pilot hole 113.
Specifically, the number of at least part of the positioning holes 113 sampled may be the same as the number of the second data recording positions, and the number of the second data recording positions may be larger than the number of the positioning holes 113 sampled. That is, each of the sampled pilot holes 113 has a second data recording location for recording the wall thickness value of its corresponding location. In the present embodiment, the number of at least part of the positioning holes 113 sampled is the same as the number of the second data recording positions.
Alternatively the second record carrier may be a table and the second data recording locations may be cells. In this embodiment both the first record carrier and the second record carrier are tables, both the first data recording position and the second data recording position are cells, and both tables are identical.
And S6, the probe 300 extends into each sampled positioning hole 113 again in sequence, the wall thickness value of the elbow 200 position corresponding to each positioning hole 113 is measured, and the wall thickness value measured by the probe 300 at the corresponding positioning hole 113 is recorded at each second data recording position respectively, so as to form a second data recording library.
Similarly, when the number of the positioning holes 113 to be sampled is plural, the probe 300 may sequentially extend into each positioning hole 113 along a fixed direction, and each second data recording position sequentially records the wall thickness value, and of course, the probe 300 may not sequentially extend along the fixed direction to perform measurement, in short, the extending sequence of the probe 300 is not limited, and finally the wall thickness measurement of the corresponding position may be performed on each positioning hole 113 to be sampled.
So set up, in different time stages, through installing location frock 100 in the same position of elbow 200, and sample at least some locating holes 113 on the location frock 100 again, and then make probe 300 measure the wall thickness value of each locating hole 113 corresponding position in proper order, thereby can survey different time stages, the wall thickness data of same measuring point, be exactly the first data record storehouse and the second data record storehouse formed, follow-up each wall thickness value to first data record storehouse record and each wall thickness value of second data record storehouse record contrast and analysis, can directly perceivedly understand the wall thickness law of change.
Further, the processor in the host 400 can compare the first data record base with the second data record base, know the wall thickness variation in time t, and further calculate the wall thickness variation in unit time, so as to predict how long the wall thickness of the measured elbow 200 reaches the minimum limit value, and once the wall thickness is smaller than the minimum limit value, the elbow 200 needs to be replaced.
As shown in fig. 6, the elbow generally includes an inlet end and an outlet end, and the portion of the elbow near the inlet end is relatively heavily flushed, and the portion of the elbow near the outlet end is relatively lightly flushed, so that the portion of the elbow near the inlet end has a relatively thin wall and the portion of the elbow near the outlet end has a relatively thick wall. Before the wall thickness value of the elbow close to the inlet end reaches the minimum limit value, the elbow which is used as the outlet end before can replace the elbow at the inlet end before, therefore, after the position is changed, the wall thickness of the elbow at the inlet end is larger than that of the elbow at the outlet end, the elbow can be continuously used, and the utilization rate of the elbow is improved.
In particular, the first and second data records may be more intuitively compared and analyzed in the form of a bar graph or line graph, or the like.
In a further technical solution, as shown in fig. 5, the elbow 200 itself has an axial positioning reference and a circumferential positioning reference, and the positioning tool 100 is provided with an axial positioning structure and a circumferential positioning structure. In this case, the installation of the positioning tool 100 at the first position of the elbow 200 specifically includes: installing the positioning tool 100 on the outer surface of the elbow 200, and aligning the axial positioning structure of the positioning tool 100 with the axial positioning reference of the elbow 200 along the circumferential direction of the elbow 200, namely, the axial positioning structure and the axial positioning reference are positioned in the same circumferential direction; meanwhile, along the axial direction of the elbow 200, the circumferential positioning structure of the positioning tool 100 is aligned with the circumferential positioning reference of the elbow 200, that is, the circumferential positioning structure and the circumferential positioning reference are located in the same axial direction.
Specifically, the installation mode of the positioning tool 100 may be a detachable connection mode such as clamping, bolt connection, and the like.
With such an arrangement, the axial position of the positioning tool 100 is determined by aligning the axial positioning structure with the axial positioning reference, and the circumferential position of the positioning tool 100 is determined by aligning the circumferential positioning structure with the circumferential positioning reference, so as to finally determine the position of the positioning tool 100.
Optionally, the inner surface of the positioning tool 100 can completely adhere to the outer surface of the elbow 200, and the installing of the positioning tool 100 on the outer surface of the elbow 200 includes: the positioning tool 100 is clamped on the outer surface of the elbow 200, and the inner surface of the positioning tool 100 is attached to the outer surface of the elbow 200, which is equivalent to directly sleeving the positioning tool 100 on the outer surface of the elbow 200 by means of external force. In this case, the wall thickness measuring method is a flowchart shown in fig. 2.
Of course, in other embodiments, the positioning tool 100 may be clamped to the outer surface of the elbow 200, but the positioning tool 100 and the elbow 200 are not completely attached to each other, and the positioning tool 100 can be installed as well.
By the arrangement, the positioning tool 100 can be quickly and simply mounted and dismounted in a clamping manner; and the positioning tool 100 is attached to the elbow 200, so that the later-stage probe 300 can conveniently extend into the positioning hole 113 of the positioning tool 100 to accurately measure the wall thickness of the corresponding position.
In this embodiment, as shown in fig. 5, the outer surface of the elbow 200 is provided with an annular protrusion 210, the axial positioning reference is an annular positioning surface 211 provided on the annular protrusion 210, and the axial positioning structure is the first end surface 111 of the positioning tool 100. The above-mentioned along the circumferencial direction of elbow 200, make the axial positioning structure of location frock 100 align with the axial positioning benchmark of elbow 200, include: the first end surface 111 of the positioning tool 100 is in limited contact with the annular positioning surface 211 in the axial direction of the elbow 200. The first end surface 111 is in axial contact with the annular locating surface 211, which corresponds to alignment of the two in the circumferential direction of the elbow 200.
In this way, the first end surface 111 and the annular positioning surface 211 both extend in the circumferential direction, so that after the two surfaces are in limited axial contact, not only can the axial position of the positioning tool 100 be determined, but also the positioning tool 100 can be prevented from moving continuously in the axial direction, and thus the axial position of the positioning tool 100 is fixed.
In the present embodiment, as shown in fig. 5, the circumferential positioning reference is the mounting hole 220 provided on the surface of the elbow 200, and the circumferential positioning structure is the notch 112 provided on the edge of the positioning tool 100, and the circumferential positioning structure of the positioning tool 100 is aligned with the circumferential positioning reference of the elbow 200 along the axial direction of the elbow 200, that is, the mounting hole 220 is aligned with the notch 112 along the circumferential direction of the elbow 200. Specifically, as shown in fig. 7, in the axial direction of the elbow 200, the positioning tool 100 includes a first end surface 111 and a second end surface, and the notch 112 is disposed on the second end surface.
In other embodiments, the notch 112 may be replaced by other marking structures such as an arrow, as long as the marking structure is aligned with the mounting hole 220.
In this manner, the circumferential position of the positioning tool 100 is determined by the alignment of the mounting hole 220 with the notch 112.
In a further technical solution, as shown in fig. 7, the positioning tool 100 is provided with a plurality of positioning hole groups, the positioning hole groups are arranged at intervals along a first direction, each positioning hole group comprises a plurality of positioning holes 113 sequentially arranged along a second direction, and the first direction and the second direction are perpendicular to each other. As shown in fig. 3, the sampling of at least some of the positioning holes 113 in all the positioning holes 113 of the positioning tool 100 includes: at least one positioning hole group of the plurality of positioning hole groups is sampled, and at least one positioning hole 113 of all positioning holes 113 of each sampled positioning hole group is sampled.
Specifically, the first direction may be an axial direction of the elbow 200, and the second direction is a circumferential direction of the elbow 200; the first direction may also be the circumferential direction of the elbow 200 and the second direction may be the axial direction of the elbow 200.
In the present embodiment, sampling is performed for each positioning hole group, and sampling is performed for at least one positioning hole 113 in all the positioning hole groups of each positioning hole group. Furthermore, the first record carrier and the second record carrier are tables, the number of rows of the table is the same as the number of positioning hole groups sampled, that is, each row of the table corresponds to one positioning hole group, and the number of cells of each row of the table is the same as the number of positioning holes 113 sampled in the corresponding positioning hole group and corresponds to one another.
Specifically, the tables may choose a left-justified manner, i.e., the first cell of each row of tables is aligned, the second cell of each row of tables is aligned, and so on.
With the arrangement, the arrangement mode of the unit cells is basically the same as that of the sampled positioning holes 113, so that the sampled positioning holes 113 can be more intuitively represented.
In the present embodiment, as shown in fig. 4, the positioning hole groups are arranged at intervals along the axial direction of the elbow 200, and a plurality of positioning holes 113 of the same positioning hole group are arranged along the circumferential direction of the elbow 200, for example, the number of rows of the table is 5, and the number of unit cells per row is 3, that is, 5 of the positioning hole groups are sampled, and 3 of the positioning holes 113 in the sampled positioning hole group are sampled at the same time.
Optionally, each positioning hole 113 corresponds to a position coordinate, and the first data recording position records the wall thickness value and also records the position coordinate corresponding to the corresponding positioning hole 113. Of course, the second data recording position may record the position coordinates corresponding to the corresponding positioning hole 113 while recording the wall thickness value.
Specifically, the axial positions corresponding to the respective positioning hole groups along the axial direction of the elbow 200 may be recorded as 1, 2, 3, 4, 5, 6 … …, and the circumferential positions corresponding to the respective positioning holes 113 of the same positioning hole group along the circumferential direction of the elbow 200 may be recorded as a, b, c, d, e, f … …. Of all the positioning holes 113 shown in fig. 4, the positioning hole 113 with hatching represents the positioning hole 113 for sampling, the positioning hole 113 without hatching represents the positioning hole 113 for non-sampling, and the table in fig. 4 records the position coordinates of the positioning hole 113 for sampling, wherein if one of the positioning holes 113 for sampling is located in the 2 nd positioning hole group and corresponds to the position c of the positioning hole group, the position coordinate of the positioning hole 113 is 2c, and the corresponding cell records not only the wall thickness value but also the position coordinate 2c thereof. Of course, the axial positions of the positioning hole groups may be recorded as a, b, c, d, e, and f … …, and the circumferential positions corresponding to the positioning holes 113 of the same positioning hole group may be recorded as 1, 2, 3, 4, 5, and 6 … …, so that the position coordinates of the positioning hole 113 are c 2. The position of each positioning hole 113 may be marked in other ways.
By the arrangement, the position coordinates of each sampled positioning hole 113 are recorded in the first data recording base, and when the sample is taken again in the later period, the probe 300 can conveniently extend into the corresponding positioning hole 113 according to each position coordinate, so that a measurer does not need to additionally record or mark the sampled positioning hole 113, and the method is simple and convenient.
In a further aspect, the wall thickness measuring method further comprises: after the first data record or the second data record is formed, wall thickness values not within the preset wall thickness range are marked. Optionally, the marking mode may be to mark the data of the wall thickness value itself, or to mark the data recording position where the wall thickness value is located, that is, the cell.
In the present embodiment, as shown in fig. 3, the wall thickness measuring method further includes:
s31, marking the wall thickness value which is not in the preset wall thickness range after the first data record base is formed;
s61, marking wall thickness values that are not within the preset wall thickness range after forming the second data record.
Of course, in other embodiments, the wall thickness values in the first data record base and the second data record base that are not within the preset wall thickness range may be marked after the second data record base is formed.
Specifically, the preset wall thickness range includes a first preset wall thickness range and a second preset wall thickness range, and the marking of the wall thickness value which is not in the preset wall thickness range includes: marking the cell in which the wall thickness value within a first preset wall thickness range is located with a first color; marking the cell in which the wall thickness value within a second preset wall thickness range is located with a second color; and marking the cell in which the wall thickness value which is not in the preset wall thickness range is positioned with a third color.
In this embodiment, the first predetermined wall thickness range is 17mm to 18mm, the second predetermined wall thickness range is 18mm to 19mm, and the absence of the predetermined wall thickness range means less than 17 mm.
So set up, mark with different colours to being in the wall thickness value of different within ranges, can show more directly perceivedly that which locating hole 113 corresponds the wall thickness value of position to be littleer, or embody that the wall thickness of which position of elbow 200 is more dangerous, which locating hole 113 corresponds the wall thickness value of position to be in normal within range.
Referring to fig. 5-7, the present application further discloses a wall thickness measuring device, which includes a positioning tool 100, a probe 300, and a host 400. The wall thickness measuring device is applied to the elbow 200, and the elbow 200 is provided with an axial positioning reference and a circumferential positioning reference.
Wherein, location frock 100 helps fixing a position the fixed position that falls of probe 300 at the surface of elbow 200, avoids the fixed position that falls of probe 300 to appear the deviation, and location frock 100 detachably installs in the surface of elbow 200, and location frock 100 is equipped with axial positioning structure and circumference location structure. Specifically, the detachable mounting manner of the positioning tool 100 may be various, such as clamping, bolt connection, and the like. Along the circumferential direction of the elbow 200, the axial positioning structure is aligned with the axial positioning reference, that is, the axial positioning structure and the axial positioning reference are located in the same circumferential direction; in the axial direction of the elbow 200, the circumferential positioning structure is aligned with the circumferential positioning reference, that is, the circumferential positioning structure and the circumferential positioning reference are located in the same axial direction.
Therefore, the positioning tool 100 is convenient to mount and dismount in a detachable connection mode; furthermore, the axial position of the positioning tool 100 is determined by aligning the axial positioning structure with the axial positioning reference, the circumferential position of the positioning tool 100 is determined by aligning the circumferential positioning structure with the circumferential positioning reference, and finally the mounting position of the positioning tool 100 on the elbow 200 is determined.
The positioning tool 100 is provided with a plurality of positioning holes 113, and the positioning holes 113 may be regularly distributed or irregularly distributed. When the positioning tool 100 is mounted on the outer surface of the elbow 200, the plurality of positioning holes 113 respectively correspond to different positions of the outer surface of the elbow 200, and the probe 300 can extend into different positioning holes 113 to measure wall thickness values of different positions. In this embodiment, as shown in fig. 5, the outer surface of the probe 300 is fitted with the edge of the pilot hole 113.
The host 400 is electrically connected with the probe 300 through a wire, and the host 400 comprises a display screen for displaying the wall thickness value. The main body 400 and the probe 300 are equivalent to a wall thickness measuring instrument in the prior art, and mainly use the ultrasonic pulse reflection principle to measure the thickness, when the ultrasonic pulse transmitted by the probe reaches the interface surface of the material through the object to be measured, the pulse is reflected back to the probe, and the thickness of the material to be measured is determined by accurately measuring the propagation time of the ultrasonic wave in the material.
So set up, this wall thickness measuring device increases location frock 100 to confirm the concrete mounted position of location frock 100 on elbow 200 through axial positioning and circumferential direction location, thereby can make probe 300 accurately fall on same measuring position at different time stages, realize the wall thickness measurement to the same measuring point of elbow 200, different time stages, realize the wall thickness value contrast, and then know the wall thickness value and change the law.
Optionally, as shown in fig. 5 and 7, the outer surface of the elbow 200 is provided with an annular protrusion 210, the axial positioning reference is an annular positioning surface 211 provided on the annular protrusion 210, the axial positioning structure is the first end surface 111 of the positioning tool 100, and the first end surface 111 of the positioning tool 100 is in axial limit contact with the annular positioning surface 211 in the elbow 200, which is equivalent to that the annular positioning surface 211 is aligned with the first end surface 111 in the circumferential direction.
So set up, can not only confirm the axial position of location frock 100, annular locating surface 211 can also avoid location frock 100 to continue to move in the axial to the axial position of fixed location frock 100.
Alternatively, the circumferential positioning reference is a mounting hole 220 provided on the surface of the elbow 200, the circumferential positioning structure is a notch 112 provided on the edge of the positioning tool 100, and the mounting hole 220 is aligned with the notch 112 in the axial direction of the elbow 200. Specifically, along the axial direction of the elbow 200, the positioning tool 100 includes a first end surface 111 and a second end surface, and the notch 112 is disposed on the second end surface. In this manner, the circumferential position of the positioning tool 100 is determined by the axial alignment of the mounting hole 220 with the notch 112.
In other embodiments, the notches 112 may be replaced by other indicia structures, such as arrows, that can be used to align the mounting holes 220 to determine circumferential position.
In an alternative embodiment, as shown in fig. 5-6, the positioning tool 100 is clamped to the outer surface of the elbow 200, and the inner surface of the positioning tool 100 is attached to the outer surface of the elbow 200. That is, the clamping and detaching of the positioning tool 100 can be realized directly by means of external force. Specifically, a clamping groove may be formed in one of the surfaces of the positioning tool 100 and the elbow 200, and a clamping block may be formed in the other surface of the positioning tool, and the clamping block may extend into the clamping groove.
Of course, in other embodiments, the positioning tool 100 is clamped with the elbow 200, but the positioning tool 100 and the elbow 200 are not completely attached to each other, and the positioning tool 100 can be installed as well.
By the arrangement, the positioning tool 100 can be quickly and simply mounted and dismounted in a clamping manner; and the positioning tool 100 is attached to the elbow 200, so that the later-stage probe 300 can conveniently extend into the positioning hole 113 of the positioning tool 100 to accurately measure the wall thickness of the corresponding position.
Optionally, as shown in fig. 7, the positioning tool 100 includes a main body 110 and at least two clamping sets, the positioning hole 113 is disposed in the main body 110, and the clamping sets are disposed at intervals along an axial direction of the elbow 200; each clamping group comprises two clamping parts 120, the two clamping parts 120 are respectively arranged at two ends of the main body part 110 along the circumferential direction of the elbow 200, and the distance between the two clamping parts 120 is smaller than the outer diameter of the elbow 200. In this embodiment, the number of the clamping groups is two, the two clamping groups are respectively located at two ends of the main body 110 along the axial direction of the elbow 200, and the two clamping portions 120 of the same clamping group have the same structure.
When the elbow 200 is installed, the distance between the two clamping parts 120 is increased through external force, so that the distance value between the two clamping parts 120 is slightly larger than the outer diameter of the elbow 200, the elbow 200 can extend into a space surrounded by the positioning tool 100 through the space between the two clamping parts 120, after the elbow 200 extends, the distance between the two clamping parts 120 is reduced to the previous distance, and the positioning tool 100 is sleeved on the outer surface of the elbow 200; similarly, when the positioning tool 100 is disassembled, an external force acts on the main body 110, the two clamping portions 120 move along the outer surface of the elbow 200, the distance between the two clamping portions 120 is increased, so that the elbow 200 is separated from the space defined by the positioning tool 100, and after the elbow 200 is separated, the distance between the two clamping portions 120 is reduced to the previous distance.
Specifically, joint portion 120 and main part 110 are integrated into one piece structure, and the material of location frock 100 is nylon, has better intensity and toughness, can take place small deformation to make the distance between two joint portions 120 can increase and the periphery of card at elbow 200.
Alternatively, as shown in fig. 7, the positioning tool 100 is provided with a plurality of positioning hole groups, the positioning hole groups are arranged at intervals along a first direction, each positioning hole group comprises a plurality of positioning holes 113 arranged in sequence along a second direction, and the first direction is perpendicular to the second direction. Specifically, the positioning holes 113 in the same positioning hole group may be arranged at intervals, that is, two adjacent positioning holes 113 may not be communicated with each other, and certainly, two adjacent positioning holes 113 may also be communicated with each other, but after the probe 300 extends into one of the positioning holes 113, the position of the probe 300 may not be displaced.
Alternatively, the first direction may be a circumferential direction of the elbow 200, the second direction may be an axial direction of the elbow 200, and the number of the positioning holes 113 in each positioning hole group may be the same or different. In this embodiment, the first direction is the axial direction of the elbow 200, and the second direction is the circumferential direction of the elbow 200.
So set up, locating hole 113 arranges with regular mode, and the person of measuring is convenient for select which locating hole 113 takes a sample, also is convenient for measure the wall thickness value of each locating hole 113 corresponding position in proper order simultaneously.
Of course, in other embodiments, the positioning holes 113 can be arranged in other manners.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (15)
1. A wall thickness measurement method, comprising:
s1, installing the positioning tool (100) at a first position of the elbow (200);
s2, sampling at least part of positioning holes (113) in all positioning holes (113) on the positioning tool (100), and displaying a first record carrier on a display screen of a host (400) according to the sampling result, wherein the first record carrier comprises a plurality of first data recording positions, and the sampled at least part of the positioning holes (113) are in one-to-one correspondence with the first data recording positions;
s3, sequentially extending the probe (300) into each sampled positioning hole (113), measuring the wall thickness value of the elbow position corresponding to each positioning hole (113), and recording the wall thickness value measured by the probe (300) at the corresponding positioning hole (113) at each first data recording position to form a first data recording library;
s4, detaching the positioning tool (100), and reinstalling the positioning tool (100) at the first position of the elbow (200) after a time t;
s5, displaying a second record carrier on a display screen of the host (400), wherein the second record carrier comprises a plurality of second data recording positions, and at least part of the positioning holes (113) which are sampled are in one-to-one correspondence with the second data recording positions;
s6, the probe (300) sequentially extends into each sampled positioning hole (113) again, the wall thickness value of the elbow position corresponding to each positioning hole (113) is measured, and the wall thickness value measured by the probe (300) at the corresponding positioning hole (113) is recorded at each second data recording position to form a second data recording library.
2. The wall thickness measuring method according to claim 1, wherein the elbow (200) is provided with an axial positioning reference and a circumferential positioning reference, and the positioning tool (100) is provided with an axial positioning structure and a circumferential positioning structure;
install location frock (100) in the first position of elbow (200), include:
installing a positioning tool (100) on the outer surface of an elbow (200), and enabling an axial positioning structure of the positioning tool (100) to be aligned with an axial positioning reference of the elbow (200) along the circumferential direction of the elbow (200), and enabling a circumferential positioning structure of the positioning tool (100) to be aligned with a circumferential positioning reference of the elbow (200) along the axial direction of the elbow (200).
3. The wall thickness measuring method according to claim 2, wherein the inner surface of the positioning tool (100) and the outer surface of the elbow (200) can be completely matched, and the step of installing the positioning tool (100) on the outer surface of the elbow (200) comprises the following steps:
and clamping the positioning tool (100) on the outer surface of the elbow (200), wherein the inner surface of the positioning tool (100) is attached to the outer surface of the elbow (200).
4. The wall thickness measuring method according to claim 2, wherein an annular protrusion (210) is arranged on the outer surface of the elbow (200), the axial positioning reference is an annular positioning surface (211) arranged on the annular protrusion (210), and the axial positioning structure is a first end surface (111) of the positioning tool (100);
the circumferential direction along elbow (200) makes the axial positioning structure of location frock (100) with the axial positioning benchmark of elbow (200) aligns, includes:
and enabling a first end surface (111) of the positioning tool (100) to be in axial limit contact with the annular positioning surface (211) on the elbow (200).
5. The wall thickness measuring method according to claim 2, wherein the circumferential positioning reference is a mounting hole (220) provided in a surface of the elbow (200), and the circumferential positioning structure is a notch (112) provided in an edge of the positioning tool (100).
6. The wall thickness measuring method according to claim 1, wherein the positioning tool (100) is provided with a plurality of positioning hole groups, the positioning hole groups are arranged at intervals along a first direction, each positioning hole group comprises a plurality of positioning holes (113) which are sequentially arranged along a second direction, and the first direction is perpendicular to the second direction;
the sampling of at least part of all positioning holes (113) on the positioning tool (100), comprises:
sampling at least one of the plurality of positioning hole groups and sampling at least one of the positioning holes (113) of all of the positioning holes (113) of each of the sampled positioning hole groups.
7. The wall thickness measuring method according to claim 1, wherein each of the positioning holes (113) has a position coordinate corresponding thereto, and the first data recording position records the position coordinate corresponding to the corresponding positioning hole (113) at the same time as the wall thickness value.
8. The wall thickness measurement method according to claim 1, further comprising:
marking the wall thickness values that are not within a preset wall thickness range after forming the first data record library or forming the second data record library.
9. A wall thickness measuring device, applied to an elbow (200), the elbow (200) being provided with an axial positioning reference and a circumferential positioning reference, characterized in that the wall thickness measuring device comprises:
the positioning tool (100) is detachably mounted on the outer surface of the elbow (200), the positioning tool (100) is provided with an axial positioning structure and a circumferential positioning structure, the axial positioning structure is aligned with the axial positioning datum along the circumferential direction of the elbow (200), the circumferential positioning structure is aligned with the circumferential positioning datum along the axial direction of the elbow (200), and the positioning tool (100) is provided with a plurality of positioning holes (113);
the probe (300) can extend into the positioning hole (113) to measure the wall thickness value of the corresponding position under the condition that the positioning tool (100) is installed on the outer surface of the elbow (200);
a host (400), the host (400) being electrically connected with the probe (300), and the host (400) comprising a display screen for displaying the wall thickness value.
10. The wall thickness measuring device according to claim 9, wherein an annular protrusion (210) is provided on an outer surface of the elbow (200), the axial positioning reference is an annular positioning surface (211) provided on the annular protrusion (210), the axial positioning structure is a first end surface (111) of the positioning tool (100), and the first end surface (111) of the positioning tool (100) is in axial limit contact with the annular positioning surface (211) on the elbow (200).
11. The wall thickness measuring device according to claim 9, wherein the circumferential positioning reference is a mounting hole (220) provided on the surface of the elbow (200), the circumferential positioning structure is a notch (112) provided on the edge of the positioning tool (100), and the mounting hole (220) is aligned with the notch (112) in the axial direction of the elbow (200).
12. The wall thickness measuring device according to claim 9, wherein the positioning tool (100) is clamped on the outer surface of the elbow (200), and the inner surface of the positioning tool (100) is attached to the outer surface of the elbow (200).
13. The wall thickness measuring device according to claim 12, wherein the positioning tool (100) comprises a main body portion (110) and at least two clamping sets, the positioning holes (113) are formed in the main body portion (110), and the clamping sets are arranged at intervals along the axial direction of the elbow (200); each joint group all includes two joint portions (120), follows the circumferencial direction of elbow (200), two joint portion (120) are located respectively the both ends of main part (110), and two distance between joint portion (120) is less than the external diameter of elbow (200).
14. The wall thickness measuring device according to claim 9, wherein the positioning tool (100) is provided with a plurality of positioning hole sets, the positioning hole sets are arranged at intervals along a first direction, each positioning hole set comprises a plurality of positioning holes (113) which are sequentially arranged along a second direction, and the first direction is perpendicular to the second direction.
15. Wall thickness measuring device according to claim 14, wherein the first direction is an axial direction of the bend (200) and the second direction is a circumferential direction of the bend (200).
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| JP2006194649A (en) * | 2005-01-12 | 2006-07-27 | Hitachi Ltd | Thickness measurement data management method, ultrasonic thickness measuring device, and plant |
| CN213041190U (en) * | 2020-11-13 | 2021-04-23 | 广东紫晶信息存储技术股份有限公司 | Positioning tool and device for detecting size of optical disc |
| CN112964211A (en) * | 2021-01-22 | 2021-06-15 | 大连理工大学 | Method and device for detecting thickness and surface shape of spherical shell part |
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| JP2000161943A (en) * | 1998-11-26 | 2000-06-16 | Hitachi Ltd | Apparatus for measuring pipe thickness |
| JP2006194649A (en) * | 2005-01-12 | 2006-07-27 | Hitachi Ltd | Thickness measurement data management method, ultrasonic thickness measuring device, and plant |
| CN213041190U (en) * | 2020-11-13 | 2021-04-23 | 广东紫晶信息存储技术股份有限公司 | Positioning tool and device for detecting size of optical disc |
| CN112964211A (en) * | 2021-01-22 | 2021-06-15 | 大连理工大学 | Method and device for detecting thickness and surface shape of spherical shell part |
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