A coaxiality measuring device for mounting flanges

Abstract

The utility model discloses a kind of coaxiality measurers of mounting flange, comprising: fixed part, positioning sleeve is equipped on it;Ruler, it is set across the positioning sleeve;And full circumference rotation degree measurer, including rod, the rod one end connects two dial gauges, and the other end is rotatably connected with the ruler;The utility model can effectively improve the installation efficiency of flange, while the device cost is low, operability is strong, material itself is suitable for preparation, without increasing too much material cost and labor cost in practical application, it can meet the requirement of measurement accuracy, and also can conveniently and quickly read coaxiality, improve on-site installation process quality.

Description

Technical Field

[0001] This utility model relates to the field of pipeline connection technology, and in particular to a coaxiality measuring device for mounting flanges. Background Technology

[0002] Currently, there are three common methods used in the industry to measure flange coaxiality: "horizontal jig measurement method", "three-coordinate measurement method", and "laser measurement technology".

[0003] The "horizontal jig measurement method" requires the fabrication of a fixed horizontal jig and the use of a plumb line to measure coaxiality. However, this method is labor-intensive and resource-intensive, requires regular jig calibration before measurement, and has low measurement accuracy. The "three-coordinate measurement method" uses a measuring probe to take fixed-point samples on the flange surface, but this method relies on the operator's selection of the baseline, which is prone to human experience errors, resulting in large errors in the final coaxiality measurement. Although "laser measurement technology" can meet the accuracy requirements, its main drawback is that it requires the setup of sophisticated testing equipment on-site. The purchase cost and transportation requirements of laser measuring instruments are relatively high, and large dust particles can also affect the accuracy of the laser when there is a lot of dust on site. Utility Model Content

[0004] The main objective of this invention is to provide a coaxiality measuring instrument for mounting flanges, aiming to solve existing technical problems.

[0005] To achieve the above objectives, this utility model provides a coaxiality measuring instrument for mounting flanges, comprising: The fastener has a positioning sleeve on it; The ruler rod is positioned by passing through the positioning sleeve; and, A full-circumference rotary measuring instrument includes a rod, one end of which is connected to two dial indicators, and the other end is rotatably connected to the ruler rod.

[0006] Furthermore, the rod includes an adjusting rod connected to the ruler rod, and the adjusting rod is provided with a crossbar connected to it at a right angle, with two dial indicators respectively located at both ends of the crossbar.

[0007] Furthermore, the crossbar is connected to the adjusting rod via a sliding sleeve.

[0008] Furthermore, the end of the ruler is provided with a bearing assembly, which includes a first part and a second part that are respectively connected to the ruler and the rod, and the first part and the second part are connected by a bearing.

[0009] Furthermore, the connection between the ruler and the rod is located on the axial center line of the fixing member.

[0010] Furthermore, the fastener is made of stainless steel cable ties.

[0011] Furthermore, the adjusting rod is slidably fitted with a positioning block, the positioning block being connected to a spring, and the adjusting rod is provided with a stop block.

[0012] Furthermore, it also includes a toggle ring composed of two semicircular rings joined together, the toggle ring being inserted into the end of the adjusting rod.

[0013] The beneficial effects of this utility model are reflected in: This invention can effectively improve the installation efficiency of flanges. At the same time, the device is low in cost, highly operable, and the materials are easy to manufacture. In practical applications, it does not require excessive material costs and labor costs. It can meet the measurement accuracy requirements while also conveniently and quickly reading the coaxiality, thus improving the quality of on-site installation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the coaxiality measuring device of this utility model; Figure 2 This is a schematic diagram of the coaxiality measuring device of this utility model installed on pipe A; Figure 3 This is a schematic diagram of the rod structure of this utility model; Figure 4 This is a schematic diagram of the adjusting rod structure of this utility model; Figure 5 This is a schematic diagram of the actuating ring structure of this utility model; Figure 6 This is a schematic diagram of the coaxiality measuring device of this utility model measuring the coaxiality of pipe A and pipe B.

[0015] Explanation of reference numerals in the attached figures: 100. Fixing component; 101. Positioning sleeve; 200. Ruler rod; 201. Bearing assembly; 2011. First component; 2012. Second component; 2013. Bearing; 300. Full-circumference rotary measuring instrument; 301. Rod; 3011. Adjusting rod; 3012. Crossbar; 3013. Sliding sleeve; 3014. Positioning block; 3015. Spring; 3016. Stop block; 302. Dial indicator; 400. Actuating ring. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0017] Please see Figure 1 , Figure 2 and Figure 6 This utility model provides a coaxiality measuring instrument for mounting flanges, comprising: The fastener 100 is provided with a positioning sleeve 101; specifically, the bolt threaded on the positioning sleeve 101 is used to fix the ruler 200. Ruler rod 200, passing through positioning sleeve 101; and, The full-circumference rotary measuring instrument 300 includes a rod 301, one end of which is connected to two dial indicators 302, and the other end is rotatably connected to a ruler 200.

[0018] During use, the measuring instrument is connected to pipe A via the fixing part 100. Before formal measurement and calibration, the ruler 200 is moved, and the maximum reading on the ruler 200 is read to obtain the radius of the pipe. At the same time, the radial center of the pipe is determined. The ruler 200 is then passed through the positioning sleeve 101 and its connection end with the rod 301 is placed at the center of the cross-section of pipe A and locked. Then, the measuring contacts of the two dial indicators 302 are brought into contact with the surfaces of pipe A and pipe B. Subsequently, the rod 301 is rotated so that the dial indicators 302 contact different positions on the pipe surface. During this process, the contacts are compressed, and the dial indicators 302 will display a reading. This indicates that there is a relative offset between the contact points of the two pipe openings. To improve the coaxiality of the two pipe openings, the position of one of the pipe openings needs to be adjusted until the deviation value displayed on the dial indicator 302 is less than or equal to the process accuracy required for the coaxiality of the two pipe openings. The contact positions are generally set at four points: the uppermost, lowermost, leftmost, and rightmost ends of the pipe openings being measured.

[0019] In one embodiment, please refer to Figure 3 The rod 301 includes an adjusting rod 3011 connected to the ruler rod 200. The adjusting rod 3011 is provided with a crossbar 3012 connected to it at a right angle. Two dial indicators 302 are respectively located at both ends of the crossbar 3012.

[0020] In this embodiment, the two dial gauges 302 are positioned at intervals and contact the surfaces of pipe A and pipe B respectively during the measurement process. By comparing the values ​​on the two dial gauges 302, the coaxiality data can be obtained, which helps the staff to adjust the pipes and meet the needs of convenient flange installation later.

[0021] In one embodiment, please refer to Figure 3 The crossbar 3012 is connected to the adjusting rod 3011 via the sliding sleeve 3013.

[0022] Specifically, the threaded bolts on the sliding sleeve 3013 are used to fix the crossbar 3012.

[0023] This embodiment is configured such that the crossbar 3012 slides on the adjusting rod 3011 via the sliding sleeve 3013 according to the diameter of the pipe being measured, until the measuring contact of the dial indicator 302 comes into contact with the surface of the pipe being measured, thereby improving the adaptability of the measuring instrument to pipes of different diameters.

[0024] In one embodiment, please refer to Figure 1 The end of the ruler 200 is provided with a bearing assembly 201. The bearing assembly 201 includes a first part 2011 and a second part 2012 that are respectively connected to the ruler 200 and the rod 301. The first part 2011 and the second part 2012 are connected by a bearing 2013.

[0025] This embodiment is configured in such a way that the rod 301 can rotate around the center of the pipe, thereby allowing the dial indicator 302 to contact different positions on the pipe surface and achieve accurate measurement.

[0026] In one embodiment, the connection between the ruler 200 and the rod 301 is located on the axial center line of the fixing member 100.

[0027] In one embodiment, the fastener 100 is a stainless steel cable tie. In this embodiment, the stainless steel cable tie is mainly composed of a flat, snap-lock metal strip. The metal strip has evenly spaced and sized locking holes. The stainless steel cable tie 1 has its own screws for fixing. Specifically, the stainless steel cable tie 1 is wrapped around the opening of the pipe A being tested. After confirming the circumference of the wrapped pipe A opening, the screws and locking holes on the stainless steel cable tie are used to fix it, ensuring that the stainless steel cable tie is firmly attached to the outer surface of the opening of the pipe A being tested.

[0028] In one embodiment, please refer to Figure 4 The adjusting rod 3011 is slidably sleeved with a positioning block 3014, which is connected to a spring 3015. The spring 3015 is sleeved on the adjusting rod 3011. The adjusting rod 3011 is provided with a stop block 3016.

[0029] Specifically, the positioning block 3014 has a notch for the stop block 3016 to pass through.

[0030] Specifically, in the initial state, the positioning block 3014 abuts against the stop block 3016. When it is necessary to limit the adjustment rod 3011, the positioning block 3014 is rotated so that the stop block 3016 passes through the notch on the positioning block 3014. With the help of the spring 3015, the positioning block 3014 abuts against the pipe surface, so that the adjustment rod 3011 will not easily rotate, which facilitates subsequent operation.

[0031] In this embodiment, after the measuring device is installed, the positioning block 3014 is released to contact the pipe surface, so that the adjusting rod 3011 will not easily shake. After the two pipes are brought close together, the positioning block 3014 is separated, and the adjusting rod 3011 is released to move freely. This avoids the adjusting rod 3011 being in a state of random rotation, which makes it difficult to quickly bring the pipes close together and carry out subsequent measurement operations.

[0032] In one embodiment, please refer to Figure 5 It also includes a toggle ring 400 made of two semi-circular rings joined together, which is inserted into the end of the adjusting rod 3011.

[0033] In this embodiment, after the measuring instrument is installed, one end of each of the two semicircular rings is inserted into the adjusting rod 3011, and the other end is spliced ​​together to form a circular ring structure. During the measurement process, the operator can rotate the dial indicator 302 around the pipe by rotating the actuating ring 400. This means that a single person can operate it from one side of the pipe, reducing the difficulty of operation.

[0034] It should be noted that if the embodiments of this utility model involve directional indicators such as up, down, left, right, front, back, etc., the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture as shown in the attached figure. If the specific posture changes, the directional indicators will also change accordingly.

[0035] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied. Furthermore, "multiple" refers to two or more. Moreover, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent.

[0036] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A coaxiality measuring instrument for mounting flanges, characterized in that... ,include: A fastener (100) is provided with a positioning sleeve (101); A ruler rod (200) is provided, passing through the positioning sleeve (101); and, The full-circumference rotary measuring instrument (300) includes a rod (301) with one end connected to two dial indicators (302) and the other end rotatably connected to the ruler rod (200).

2. The coaxiality measuring instrument for mounting flanges as described in claim 1, characterized in that: The rod (301) includes an adjusting rod (3011) connected to the ruler rod (200), and a crossbar (3012) connected to it at a right angle. Two dial indicators (302) are respectively located at both ends of the crossbar (3012).

3. The coaxiality measuring instrument for mounting flanges as described in claim 2, characterized in that: The crossbar (3012) is connected to the adjusting rod (3011) via a sliding sleeve (3013).

4. The coaxiality measuring instrument for mounting flanges as described in claim 1, characterized in that: The end of the ruler (200) is provided with a bearing assembly (201), the bearing assembly (201) includes a first part (2011) and a second part (2012) respectively connected to the ruler (200) and the rod (301), and the first part (2011) and the second part (2012) are connected by a bearing (2013).

5. The coaxiality measuring instrument for mounting flanges as described in claim 1, characterized in that: The connection between the ruler (200) and the rod (301) is located on the axial center line of the fixing member (100).

6. The coaxiality measuring instrument for mounting flanges as described in claim 1, characterized in that: The fastener (100) is made of stainless steel cable ties.

7. The coaxiality measuring instrument for mounting flanges as described in claim 2, characterized in that: The adjusting rod (3011) is slidably sleeved with a positioning block (3014), the positioning block (3014) is connected to a spring (3015), and the adjusting rod (3011) is provided with a stop block (3016).

8. The coaxiality measuring instrument for mounting flanges as described in claim 2, characterized in that: It also includes a toggle ring (400) made of two semicircular rings joined together, the toggle ring (400) being inserted into the end of the adjusting rod (3011).

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