Device for measuring deformation of connecting pipe in limited space

Abstract

The utility model relates to the technical field of nuclear power equipment measuring tools, and provides a device for measuring deformation of a connecting pipe in a limited space, the connecting pipe arranged in the limited space comprises a first workpiece and a second workpiece, and the measuring device comprises a first guide part, a second guide part, a measuring part, a connecting part and a support adjusting part; the first guide part and the second guide part are connected through a connecting part; the first guide part is matched with a first workpiece, and the second guide part is matched with a second workpiece; the supporting adjusting part is arranged on the connecting part, one end of the supporting adjusting part makes contact with the inner wall face of the limited space, and the supporting adjusting part is used for adjusting the distance between the connecting part and the inner wall face of the limited space; the measuring part is arranged on the second guide part. The measuring device is reasonable in structural design and convenient to produce and assemble, the measuring device is matched with a measuring piece to obtain measuring data, data of the face to be detected can be transmitted to a machining tool, the face to be detected can be machined, and therefore safety and reliability of the face to be detected are guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of nuclear power equipment measuring tooling, and in particular relates to a device for measuring deformation of a pipe in a confined space. Background Art

[0002] In the manufacture of nuclear power equipment, for example, after welding the pipe of the nuclear power steam generator shell, welding deformation will occur. Laser trackers are generally used for measurement, but it is impossible to measure welding deformation in a narrow space, especially for materials of long pipes in a narrow space. For similar measurements, a common method is to apply hard film, and obtain corresponding data by measuring the peeled hard film. However, using the hard film method, the measurement data obtained by measuring the peeled hard film is mostly rough, especially because the hard film is manually operated, and the human influence component is relatively large. Utility Model Content

[0003] In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a device for measuring the deformation of a pipe in a confined space.

[0004] The technical solution adopted by the utility model to solve its technical problems is:

[0005] A device for measuring deformation of a pipe in a confined space, wherein the pipe disposed in the confined space comprises a first workpiece and a second workpiece, and the measuring device comprises a first guide portion, a second guide portion, a measuring portion, a connecting portion, and a supporting and adjusting portion;

[0006] The first guide portion and the second guide portion are connected via the connecting portion;

[0007] The first guide portion cooperates with the first workpiece, and the second guide portion cooperates with the second workpiece;

[0008] The support adjustment portion is provided at the connection portion, one end of the support adjustment portion contacts the inner wall surface of the confined space, and the support adjustment portion is used to adjust the distance between the connection portion and the inner wall surface of the confined space;

[0009] The measuring part is arranged on the second guide part.

[0010] Preferably, the first guide portion and the second guide portion are both annular structures, the side surfaces of the first guide portion and the second guide portion are provided with connecting grooves matching with the connecting portion, and bolt members are provided at the connection between the connecting portion and the first guide portion and the second guide portion.

[0011] Preferably, the measuring portion comprises a measuring fixture and a measuring piece, and the measuring piece is connected to the second guide portion via the measuring fixture.

[0012] Preferably, the measuring fixture is an L-shaped structure, including a fixed end and a bracket end, the fixed end is connected to the second guide portion, the bracket end is connected to the measuring piece, and the measuring end of the measuring piece faces the end face of the second workpiece.

[0013] Preferably, the fixed end of the measurement fixing frame corresponds to the position of the connecting groove of the second guide portion, and the fixed end of the measurement fixing frame is connected to the bolt member at the second guide portion.

[0014] Preferably, the measuring device is a laser measuring instrument, the number of the measuring devices is more than two, and the measuring devices are arranged in a fan-shaped measuring array.

[0015] Preferably, a plurality of the measuring members are arranged along a straight line to form a measuring group, and a plurality of the measuring groups are arranged in sequence at equal angles around a center of a circle to form the measuring array.

[0016] Preferably, the angle between adjacent measurement groups ranges from 5° to 10°.

[0017] Preferably, the support and adjustment portion comprises a support bolt member and an adjustment nut, the support bolt member is connected to the connection portion, and the adjustment nut is arranged on the support bolt member.

[0018] Preferably, the connecting portion is a long strip structure, and the number of the connecting portions is more than two and they are evenly distributed on the sides of the first guide portion and the second guide portion.

[0019] Compared with the prior art, the beneficial effects of the utility model include:

[0020] The structure of the present application is achieved by manufacturing a simulation part (the first guide part and the second guide part of the present embodiment) that matches the part to be detected (the connecting pipe within the confined space of the present embodiment), and setting the installation position of the detection instrument (laser measuring instrument) on the simulation part (the measuring part of the present embodiment). The simulation part is assembled and adjusted with the matching parts to achieve the state of the product during operation. At this time, multiple detection data can be obtained at the same time by arranging multiple point detection instruments on the simulation part to work simultaneously. By analyzing the detection data, approximation data of the surface to be detected can be obtained. The data of the surface to be detected can be transmitted to a processing machine tool, and the surface to be detected can be processed, thereby ensuring its safety and reliability. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0022] Figure 1 It is a schematic diagram of the use state of the utility model.

[0023] Figure 2 for Figure 1 An enlarged schematic diagram of the marker A.

[0024] in:

[0025] 1-first workpiece, 2-second workpiece, 3-first guide portion, 4-second guide portion, 5-connecting portion, 6-connecting groove, 7-bolt member, 8-measuring bracket, 9-measuring member, 10-supporting bolt member, 11-adjusting nut. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the utility model, and the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0028] Example:

[0029] like Figure 1-2 As shown, in this embodiment, a device for measuring deformation of a pipe in a confined space is provided. The pipe arranged in the confined space includes a first workpiece 1 and a second workpiece 2. The measuring device includes a first guide portion 3, a second guide portion 4, a measuring portion, a connecting portion 5 and a supporting and adjusting portion.

[0030] The first guide portion 3 and the second guide portion 4 are connected via a connecting portion 5;

[0031] The first guide portion 3 cooperates with the first workpiece 1, and the second guide portion 4 cooperates with the second workpiece 2;

[0032] The support adjustment part is provided on the connection part 5, one end of the support adjustment part contacts the inner wall surface of the confined space, and the support adjustment part is used to adjust the distance between the connection part 5 and the inner wall surface of the confined space;

[0033] The measuring part is arranged on the second guide part 4 .

[0034] The structure of this embodiment is achieved by making a simulation part (the first guide part 3 and the second guide part 4 of this embodiment) that matches the part to be detected (the connecting pipe in the confined space of this embodiment), and setting the installation position of the detection instrument (laser measuring instrument) on the simulation part (the measuring part of this embodiment), and assembling and adjusting the simulation part and the matching parts to achieve the state of the product during operation; at this time, by arranging multiple points of detection instruments on the simulation part to work simultaneously, multiple detection data can be obtained at the same time, and by analyzing the detection data, the approximate data of the surface to be detected can be obtained, and the data of the surface to be detected can be transmitted to the processing machine tool, so that the surface to be detected can be processed, thereby ensuring its safety and reliability.

[0035] In this embodiment, in order to facilitate the coordination with the connecting pipe in the confined space, the first guide portion 3 and the second guide portion 4 of this embodiment are both annular structures, wherein the side surfaces of the first guide portion 3 and the second guide portion 4 are provided with a connecting groove 6 that coordinates with the connecting portion 5, and a bolt member 7 is provided at the connection between the connecting portion 5 and the first guide portion 3 and the second guide portion 4. The connecting groove 6 structure provided above facilitates the coordination and positioning of the connecting portion 5 with the first guide portion 3 and the second guide portion 4, and then a convenient connection operation is performed through the bolt member 7.

[0036] The measuring part of this embodiment includes a measuring fixture 8 and a measuring member 9 , and the measuring member 9 is connected to the second guide part 4 via the measuring fixture 8 .

[0037] The measuring fixture 8 is an L-shaped structure, including a fixed end and a bracket end, the fixed end is connected to the second guide portion 4 , the bracket end is connected to the measuring piece 9 , and the measuring end of the measuring piece 9 faces the end surface of the second workpiece 2 .

[0038] Specifically, the fixed end of the measurement fixing frame 8 corresponds to the position of the connection groove 6 of the second guide portion 4 , and the fixed end of the measurement fixing frame 8 is connected to the bolt member 7 at the second guide portion 4 .

[0039] The measuring piece 9 of this embodiment is a detection instrument, specifically a laser measuring instrument. The number of the measuring pieces 9 is more than two, and the measuring pieces 9 are arranged in a fan-shaped measurement array.

[0040] Specifically, a plurality of measuring members 9 are arranged along a straight line to form a measuring group, and a plurality of measuring groups are arranged in sequence at equal angles around a center of a circle to form a measuring array.

[0041] Specifically, the angle between adjacent measurement groups ranges from 5° to 10°.

[0042] Regarding the arrangement of the measuring member 9 above, firstly, the measuring member 9 is a fan-shaped measuring array according to the size of the measuring area, and secondly, the angle between adjacent measuring groups is determined according to the size of the laser measuring instrument used.

[0043] The support adjustment part of this embodiment includes a support bolt member 10 and an adjustment nut 11, wherein the support bolt member 10 is connected to the connection part 5, and the adjustment nut 11 is arranged on the support bolt member 10. By adjusting the relative position of the nut 11 and the support bolt member 10, the connection part 5 and the support bolt member 10 can be adjusted, so that the gap between the measuring part and the second workpiece 2 can be kept uniform, thereby ensuring the reliability of the measurement.

[0044] In this embodiment, the connecting portion 5 is a long strip structure. There are four connecting portions 5 and they are evenly distributed on the sides of the first guide portion 3 and the second guide portion 4. The length of the connecting portion 5 is 10 to 50 mm longer than the overall length of the connecting pipe in the confined space to ensure that there is a gap between the inner end face of the measuring portion and the second workpiece 2.

[0045] The specific use principle of this embodiment is as follows:

[0046] When in use, place the measuring device into the confined space of the product, specifically place the first guide part 3 into the first workpiece 1, and make the end of the first guide part 3 contact the stepped surface of the first workpiece 1; adjust the support bolt 10 and the adjusting nut 11 to keep the gap between the measuring fixture 8 and the second workpiece 2 uniform, and then install the measuring piece 9. The measuring piece 9 is distributed in a fan shape according to the size of the measuring area. The adjacent distance is determined by the size of the laser measuring instrument used. Generally, the adjacent distance is about 5 to 10°; after all the measuring pieces 9 are installed, the measuring piece 9, i.e. the laser measuring instrument, can be started. By measuring the data of each point, its distance can be obtained (refer to Figure 2 , △1 and △2 are the measurement data of two measuring pieces); and the change of the entire measuring surface relative to the reference surface of the measuring fixture 8 is depicted through calculation software.

[0047] If the contact surface of the measuring device and the second workpiece 2 that cooperates with the part needs to be closely fitted therewith due to technical requirements, the data can be converted into the contact surface of the machined matching part through software (such as UG).

[0048] To sum up, the measuring device of this embodiment has a reasonable structural design and is easy to produce and assemble. At the same time, it can be assembled and adjusted according to the matching parts to achieve the state of the product during operation, and then cooperate with the measuring parts to obtain measurement data and obtain the approximate data of the surface to be detected. The data of the surface to be detected can be transmitted to the processing machine tool, and the surface to be detected can be processed, thereby ensuring its safety and reliability.

[0049] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Therefore, any modification, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A device for measuring deformation of a pipe in a confined space, characterized in that: The pipe disposed in the confined space includes a first workpiece and a second workpiece, and the measuring device includes a first guide portion, a second guide portion, a measuring portion, a connecting portion, and a supporting and adjusting portion; The first guide portion and the second guide portion are connected via the connecting portion; The first guide portion cooperates with the first workpiece, and the second guide portion cooperates with the second workpiece; The support adjustment portion is provided at the connection portion, one end of the support adjustment portion contacts the inner wall surface of the confined space, and the support adjustment portion is used to adjust the distance between the connection portion and the inner wall surface of the confined space; The measuring part is arranged on the second guide part.

2. The device for measuring deformation of a pipe in a confined space according to claim 1, characterized in that: The first guide part and the second guide part are both annular structures, and connecting grooves matching with the connecting part are provided on the side surfaces of the first guide part and the second guide part, and bolts are provided at the connection between the connecting part and the first guide part and the second guide part.

3. The device for measuring deformation of a pipe in a confined space according to claim 2, characterized in that: The measuring part includes a measuring fixture and a measuring piece, and the measuring piece is connected to the second guide part through the measuring fixture.

4. The device for measuring deformation of a pipe in a confined space according to claim 3, characterized in that: The measuring fixture is an L-shaped structure, including a fixed end and a bracket end, the fixed end is connected to the second guide portion, the bracket end is connected to the measuring piece, and the measuring end of the measuring piece faces the end surface of the second workpiece.

5. The device for measuring deformation of a pipe in a confined space according to claim 4, characterized in that: The fixed end of the measurement fixing frame corresponds to the position of the connecting groove of the second guide portion, and the fixed end of the measurement fixing frame is connected to the bolt member at the second guide portion.

6. The device for measuring deformation of a pipe in a confined space according to claim 3, characterized in that: The measuring piece is a laser measuring instrument. The number of the measuring pieces is more than two, and the measuring pieces are arranged in a fan-shaped measuring array.

7. The device for measuring deformation of a pipe in a confined space according to claim 6, characterized in that: A plurality of the measuring members are arranged along a straight line to form a measuring group, and a plurality of the measuring groups are arranged in sequence at equal angles around a center of a circle to form the measuring array.

8. The device for measuring deformation of a pipe in a confined space according to claim 7, characterized in that: The angle between adjacent measurement groups ranges from 5° to 10°.

9. The device for measuring deformation of a pipe in a confined space according to claim 1, characterized in that: The support and adjustment portion includes a support bolt and an adjustment nut. The support bolt is connected to the connection portion, and the adjustment nut is arranged on the support bolt.

10. The device for measuring deformation of a pipe in a confined space according to claim 1, characterized in that: The connecting portion is a long strip structure, and the number of the connecting portions is more than two and they are evenly distributed on the side surfaces of the first guide portion and the second guide portion.

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