Device and method for checking radial deviation of quick-release clamp in narrow area

Abstract

The invention discloses a narrow area quick-release clamp radial deviation inspection device and method, and belongs to the technical field of manufacturing and assembling.The narrow area quick-release clamp radial deviation inspection device comprises a guide pipe concave connector and a guide pipe convex connector, the guide pipe concave connector is sleeved with the guide pipe convex connector, and a measuring block is arranged on the guide pipe concave connector or the guide pipe convex connector. According to the invention, overall radial deviation inspection of conduit assembly is realized by means of a simple measuring block, the overall deviation can be evaluated only through partial measurement, and convenience is provided for radial deviation inspection of a quick-release clamp of a pipeline system in a narrow area.

Description

Technical Field

[0001] The present invention belongs to the technical field of manufacturing and assembly, and particularly relates to a radial deviation inspection device and method for a quick-release clamp in a narrow area. Background Art

[0002] The pipeline system of mechanical equipment generally undertakes the functions of oil and gas transportation. The various conduit components in the system are connected through various connection forms. Quick-release clamps such as HB6521 and GJB3821 are an important connection form among them. They lock the concave and convex joints of the conduits on both sides through a clamp locking device, thereby achieving a firm seal between the conduits. On the other hand, due to the structural characteristics of the quick-release clamp, in order to ensure a firm seal, there are strict requirements for the overall radial deviation of the concave and convex joints of the conduits on both sides in the assembly specifications (not more than 1.5 mm for HB6521); however, the assembly environment inside mechanical equipment is complex, and there are many narrow areas. After the quick-release clamp conduits are assembled, the radial range of the conduit joints cannot be measured or visually inspected in a full circle, and only the radial deviation of some parts can be inspected. This leads to the situation where the overall radial deviation of the quick-release clamp conduits exceeds the tolerance but is not detected, ultimately resulting in leakage in the pipeline system. Therefore, for the quick-release clamp conduits in narrow areas, an accurate and efficient radial deviation inspection device and method are needed, and the effect of mapping the whole from the part of the radial deviation inspection of the quick-release clamps in the pipeline system is realized to ensure the assembly quality of the conduits connected by the quick-release clamps in the pipeline system. Summary of the Invention

[0003] To solve the above technical problems, the present invention provides a radial deviation inspection device and method for a quick-release clamp in a narrow area, which realizes the inspection of the overall radial deviation of the conduit assembly by means of a simple measuring block, and has the characteristic of being able to evaluate the overall deviation only by partial measurement, providing convenience for the radial deviation inspection of the quick-release clamps in the narrow area pipeline system.

[0004] The object of the present invention is achieved through the following technical solutions:

[0005] A radial deviation inspection device for a quick-release clamp in a narrow area includes a concave conduit joint and a convex conduit joint. The convex conduit joint is sleeved on the concave conduit joint, and a measuring block is arranged on the concave conduit joint or the convex conduit joint.

[0006] Preferably, the measuring block is a hexahedron, and the measuring block includes a top surface, a lower arc surface, two side surfaces, and two thickness surfaces.

[0007] Preferably, the included angle between the two side surfaces is an acute angle.

[0008] Preferably, both the concave conduit joint and the convex conduit joint are standard parts.

[0009] A method for checking the radial deviation of a quick-release clamp in a narrow area, which is checked by using a device for checking the radial deviation of a quick-release clamp in a narrow area, includes the following steps:

[0010] Step S1: In the non-occluded area, first judge the relative deviation between the concave conduit joint and the convex conduit joint, and place the measuring block on the outer contour of the concave conduit joint or the convex conduit joint with a relatively small relative deviation;

[0011] Step S2: At the two side surfaces of the measuring block, measure the deviation value L of the concave conduit joint or the convex conduit joint with a relatively large relative deviation along the radial direction of the lower arc surface of the measuring block 1 and L 2 ;

[0012] Step S3: Calculate the overall radial deviation δ of the quick-release clamp conduit joint;

[0013] Step S4: Judgment: Judge whether the overall radial deviation is qualified according to the specified required value;

[0014] Step S5: At the actual position of the movable measuring block, repeat Steps S2 to S4, calculate different deviation values δ, and take the average value δ 平 , to further improve the accuracy of deviation inspection, and then use δ 平 to compare with the specified required value to judge whether the overall radial deviation of the quick-release clamp is qualified.

[0015] Preferably, the device for checking the radial deviation of the quick-release clamp in a narrow area is applicable to the connection form of the quick-release clamp in the narrow area of the mechanical equipment pipeline system.

[0016] Preferably, the narrow area refers to an area where there is a closed area or an obstacle within the radial range of the quick-release clamp conduit joint, and it is impossible to measure or visually inspect the whole circle, and only the radial deviation of some parts can be checked.

[0017] Preferably, in Steps S2 and S3, the outer contour radii of the concave conduit joint, the convex conduit joint and the lower arc surface are all R, the overall radial deviation of the concave conduit joint and the convex conduit joint is δ, and the centers of the outer contours of the concave conduit joint and the convex conduit joint are O 1 and O 2 , respectively. The deviation values of the joint with a relatively large relative deviation along the radial direction of the lower arc surface of the measuring block at the two side surfaces of the measuring block are L 1 and L 2 , respectively. Define L 1 ≥L 2 ; At the two side surfaces of the measuring block, the center O of the concave conduit joint 1The distances along the radial direction to the outer contour of the catheter connector are b and c respectively, with b≥c defined; the chord length formed on the outer contour of the catheter connector is a, and the angle between a and b is C; in the triangle formed by b, deviation δ, and radius R, the angle corresponding to deviation δ is θ; in the triangle formed by a, center O2, and radius R, the angle corresponding to radius R is α.

[0018] Preferably, in step S3, the overall radial deviation δ of the quick-release clamp catheter connector includes the following calculation steps:

[0019] Step S310, according to L 1 and L 2 it can be obtained that b = R + L 1 , c = R + L 2 , with b≥c defined;

[0020] Step S320, calculate the chord length through the cosine angle formula of the triangle angle

[0021] angle so as to obtain θ = α - C;

[0022] Step S330, finally calculate and obtain

[0023] Preferably, in step S4, if the measured and calculated δ is greater than the specified required value, it is determined that the radial deviation of the current quick-release clamp is unqualified and assembly adjustment is required; if the measured and calculated δ is less than or equal to the specified required value, it is determined that the radial deviation of the current quick-release clamp is qualified.

[0024] The beneficial effects of this technical solution are as follows:

[0025] First, a quick-release clamp radial deviation inspection device for narrow areas provided by the present invention has the characteristics of high detection accuracy, fast speed, and only partial measurement is required to evaluate the overall deviation. Moreover, multiple-point repeated measurements can be taken to calculate the average value to further improve the deviation inspection accuracy, providing convenience for the quick-release clamp radial deviation inspection of pipeline systems in narrow areas and having strong practical application value.

[0026] Second, a quick-release clamp radial deviation inspection method for narrow areas provided by the present invention realizes the inspection of the overall radial deviation of catheter assembly with the help of a simple measuring block, realizes the accurate state inspection of the quick-release clamp connecting catheter assembly in the narrow area of the pipeline system, does not require additional disassembly and assembly work to ensure the operation space or complete the quick-release clamp radial deviation inspection through complex detection means, and ensures the assembly efficiency and quality of the quick-release clamp connecting catheter in the pipeline system. Description of the Drawings

[0027] Figure 1Structural schematic of the present invention Figure 1 ;

[0028] Figure 2 is Figure 1 Enlarged view in the V direction in

[0029] Figure 3 Structural schematic diagram of the measuring block in the present invention;

[0030] Figure 4 Axonometric of the measuring block in the present invention Figure 1 ;

[0031] Figure 5 Axonometric of the measuring block in the present invention Figure 2 ;

[0032] Figure 6 Structural schematic of the present invention Figure 2 ;

[0033] Figure 7 is Figure 6 Enlarged view in the A direction in

[0034] Figure 8 is Figure 7 Enlarged view at position I in

[0035] Wherein: 1, catheter female joint; 2, catheter male joint; 3, measuring block; 31, top surface; 32, side surface; 33, lower arc surface; 34, thickness surface. Specific embodiments

[0036] The present invention will be further described in detail below in conjunction with embodiments, but the embodiments of the present invention are not limited thereto.

[0037] Embodiment 1

[0038] As Figures 1-8 shown, a radial deviation inspection device for a quick-release clamp in a narrow area includes a catheter female joint 1 and a catheter male joint 2, the catheter male joint 2 is sleeved on the catheter female joint 1, and a measuring block 3 is arranged on the catheter female joint 1 or the catheter male joint 2.

[0039] Wherein, the measuring block 3 is a hexahedron, and the measuring block 3 includes a top surface 31, a lower arc surface 33, two side surfaces 32 and two thickness surfaces 34.

[0040] Wherein, the included angle between the two side surfaces 32 is an acute angle.

[0041] Wherein, both the catheter female joint 1 and the catheter male joint 2 are standard parts, and the structures and manufacturing of the catheter female joint 1 and the catheter male joint 2 meet the requirements of national standard specifications, and the typical specifications are HB6521 and GJB3821 series.

[0042] Example 2

[0043] A method for checking the radial deviation of a quick-release clamp in a narrow area is carried out by using the device for checking the radial deviation of the quick-release clamp in a narrow area described in Example 1, and includes the following steps:

[0044] Step S1: In the non-occluded area, first judge the relative deviation between the conduit female joint 1 and the conduit male joint 2, and place the measuring block 3 on the outer contour of the conduit female joint 1 or the conduit male joint 2 with a relatively small relative deviation;

[0045] Step S2: At the two side surfaces 32 of the measuring block 3, measure the deviation value L of the conduit female joint 1 or the conduit male joint 2 with a relatively large relative deviation along the radial direction of the lower arc surface 33 of the measuring block 3 1 and L 2 ;

[0046] Step S3: Calculate the overall radial deviation δ of the quick-release clamp conduit joint;

[0047] Step S4: Judgment: Judge whether the overall radial deviation is qualified according to the specified required value;

[0048] Step S5: Actually move the position of the measuring block 3, repeat Steps S2 to S4, calculate different deviation values δ, take the average value δavg to further improve the accuracy of deviation inspection, and then compare δavg with the specified required value to judge whether the overall radial deviation of the quick-release clamp is qualified.

[0049] Preferably, the device for checking the radial deviation of the quick-release clamp in a narrow area is applicable to the connection form of the quick-release clamp in the narrow area of the mechanical equipment pipeline system.

[0050] Preferably, the narrow area means that there is a closed area or an obstacle within the radial range of the quick-release clamp conduit joint, and the whole circle cannot be measured or visually inspected, and only the radial deviation of some parts can be checked.

[0051] Preferably, in Steps S2 and S3, the outer contour radii of the conduit female joint 1, the conduit male joint 2, and the lower arc surface 33 are all R, the overall radial deviation of the conduit female joint 1 and the conduit male joint 2 is δ, and the centers of the outer contours of the conduit female joint 1 and the conduit male joint 2 are O 1 and O 2 , respectively. The deviation values of the joint with a relatively large relative deviation along the radial direction of the lower arc surface 33 of the measuring block 3 at the two side surfaces 32 of the measuring block 3 are L 1 and L 2 , respectively. Define L 1 ≥L 2 ; At the centers O 1The distances along the radial direction to the outer contour of the catheter adapter 2 are b and c respectively, with b≥c defined; the chord length formed on the outer contour of the catheter adapter 2 is a, and the angle between a and b is C; in the triangle formed by b, deviation δ, and radius R, the angle corresponding to the deviation δ is θ; in the triangle formed by a, center O 2 and radius R, the angle corresponding to the radius R is α.

[0052] Preferably, in the step S3, the overall radial deviation δ of the quick-release clamp catheter adapter includes the following calculation steps:

[0053] Step S310, according to L1 and L2, it can be obtained that b = R + L1, c = R + L2, with b≥c defined;

[0054] Step S320, calculate the chord length through the cosine angle formula of the triangle angle angle Thus, it can be obtained that θ = α - C;

[0055] Step S330, finally calculate and obtain

[0056] Preferably, in the step S4, if the measured and calculated δ is greater than the specified requirement value (the specified requirement value is related to each standard part, and its value is customized and well-known to those skilled in the art. It is not the protection point of this application and will not be described in detail here; for example, if the standard part is HB6521, the specified requirement value of this part is 1.5 mm), it is determined that the radial deviation of the quick-release clamp in this time is unqualified and needs to be assembled and adjusted (the assembly and adjustment are well-known to those skilled in the art and are not the protection point of this application and will not be described in detail here); if the measured and calculated δ is less than or equal to the specified requirement value, it is determined that the radial deviation of the quick-release clamp in this time is qualified.

[0057] The beneficial effects of this technical solution are as follows:

[0058] First, a device for checking the radial deviation of a quick-release clamp in a narrow area provided by the present invention has the characteristics of high detection accuracy, fast speed, and only partial measurement is required to evaluate the overall deviation. Moreover, multiple-point repeated measurements can be taken to calculate the average value to further improve the deviation inspection accuracy, providing convenience for the inspection of the radial deviation of the quick-release clamp in the narrow area pipeline system, and having strong practical application value.

[0059] Second, a method for checking the radial deviation of a quick-release clamp in a narrow area provided by the present invention realizes the inspection of the overall radial deviation of the catheter assembly with the help of a simple measuring block 3, and only partial measurement is required to evaluate the overall deviation, providing convenience for the inspection of the radial deviation of the quick-release clamp in the narrow area pipeline system.

[0060] Embodiment 3

[0061] The difference between this embodiment and Embodiment 2 is that a certain connection in a certain pipeline system is in the form of a quick-release clamp connection. The model of the quick-release clamp is the HB6521 series, its outer contour R is 36 mm, and the specification requires that the overall radial deviation after assembly is ≤ 1.5 mm. The quick-release clamp is in a narrow space, and only part of the area can be visually inspected and measured. The angle A between the two side faces 32 of the measuring block 3 is 10°, and the radius R of the lower arc surface 33 of the measuring block 3 is 36 mm. The method for checking the radial deviation of the quick-release clamp in the narrow area specifically includes the following steps:

[0062] Step S1: In the non-occluded area, first determine that the relative deviation of the catheter male connector 2 is relatively large, so place the measuring block 3 on the outer contour of the catheter female connector 1 with a relatively small relative deviation;

[0063] Step S2: At the two side faces 32 of the measuring block 3, measure the deviation value L of the catheter male connector 2 along the radial direction of the lower arc surface 33 of the measuring block 3 1 and L 2 , and measure L 1 = 3.99 mm, L 2 = 3.933 mm;

[0064] Step S3: Calculate the overall radial deviation δ of the quick-release clamp catheter joint. According to L 1 and L 2 , it can be obtained that b = R + L 1 = 39.99 mm, c = R + L 2 = 39.933 mm. Then, calculate the chord length a = 6.94 mm, the included angle α = 84.47°, C = 83.26° through the triangle cosine included angle formula, so as to obtain θ = α - C = 1.21°, and finally calculate δ = 3.99 mm;

[0065] Step S4: Judgment: Judge whether the overall radial deviation is qualified according to the specified required value. The measured and calculated δ = 3.99 mm > 1.5 mm, so it is judged that the radial deviation of this quick-release clamp is unqualified and needs to be adjusted during assembly;

[0066] Step S5: Actually move the position of the measuring block 3, repeat Steps S2 to S4, calculate different deviation values δ, and take the average value δ 平 , to further improve the accuracy of deviation inspection, and then compare δ 平 with the specified required value to judge whether the overall radial deviation of the quick-release clamp is qualified.

[0067] The above is only a preferred embodiment of the present invention, and does not impose any form of limitation on the present invention. Any simple modification or equivalent change made to the above embodiments based on the technical essence of the present invention falls within the protection scope of the present invention.

Claims

1. A device for checking radial deviation of quick-release clamps in narrow areas, characterized in that: It includes a conduit female joint (1) and a conduit male joint (2), the conduit male joint (2) is sleeved on the conduit female joint (1), and a measuring block (3) is provided on the conduit female joint (1) or the conduit male joint (2).

2. The device for checking radial deviation of a quick-release clamp in a narrow area according to claim 1, characterized in that: The measuring block (3) is a hexahedron, and the measuring block (3) includes a top surface (31), a lower arc surface (33), two side surfaces (32) and two thickness surfaces (34).

3. The device for checking radial deviation of a quick-release clamp in a narrow area according to claim 2, characterized in that: The included angle between the two side surfaces (32) is an acute angle.

4. The device for checking radial deviation of a quick-release clamp in a narrow area according to claim 1, characterized in that: Both the conduit female joint (1) and the conduit male joint (2) are standard parts.

5. A method for checking radial deviation of quick-release clamps in narrow areas, characterized in that: Using the narrow area quick-release clamp radial deviation inspection device according to any one of claims 1-4 for inspection, including the following steps: Step S1: In the non-occluded area, first judge the relative deviation between the conduit female joint (1) and the conduit male joint (2), and place the measuring block (3) on the outer contour of the conduit female joint (1) or the conduit male joint (2) with a relatively small relative deviation. Step S2: At the two side surfaces (32) of the measuring block (3), measure the deviation values L1 and L2 of the conduit female joint (1) or the conduit male joint (2) with a relatively large relative deviation along the radial direction of the lower arc surface (33) of the measuring block (3). Step S3: Calculate the overall radial deviation δ of the quick-release clamp conduit joint. Step S4: Judgment: Judge whether the overall radial deviation is qualified according to the specified requirement value. Step S5: The actual position of the movable measuring block (3) is adjusted, and steps S2 to S4 are repeated to calculate different deviation values δ, and the average value δavg is taken to further improve the deviation inspection accuracy, and then δavg is compared with the specified requirement value to judge whether the overall radial deviation of the quick-release clamp is qualified.

6. A method for checking radial deviation of a quick-release clamp in a narrow area according to claim 5, characterized in that: The narrow area quick-release clamp radial deviation inspection device is applicable to the connection form of quick-release clamps in the narrow areas of the mechanical equipment pipeline system.

7. A method for checking radial deviation of a quick-release clamp in a narrow area according to claim 6, characterized in that: The narrow area refers to the existence of a closed area or an obstacle within the radial range of the quick-release clamp conduit joint, where the whole circle cannot be measured or visually inspected, and only the radial deviation of some parts can be inspected.

8. A method for checking radial deviation of a quick-release clamp in a narrow area according to claim 7, characterized in that: In steps S2 and S3, the outer contour radii of the conduit female joint (1), the conduit male joint (2) and the lower arc surface (33) are all R, the overall radial deviation of the conduit female joint (1) and the conduit male joint (2) is δ, the centers of the outer contours of the conduit female joint (1) and the conduit male joint (2) are O1 and O2 respectively, the deviation values of the joint with a relatively large relative deviation along the radial direction of the lower arc surface (33) of the measuring block (3) at the two side surfaces (32) of the measuring block (3) are L1 and L2 respectively, and it is defined that L1≥L2; the distances from the center O1 of the conduit female joint (1) along the radial direction to the outer contour of the conduit male joint (2) at the two side surfaces (32) of the measuring block (3) are b and c respectively, and it is defined that b≥c; the chord length formed on the outer contour of the conduit male joint (2) is a, and the included angle between a and b is C; in the triangle formed by b, the deviation δ and the radius R, the included angle corresponding to the deviation δ is θ; in the triangle formed by a, the center O2 and the radius R, the included angle corresponding to the radius R is α.

9. A method for checking radial deviation of a quick-release clamp in a narrow area according to claim 8, characterized in that: In step S3, the overall radial deviation δ of the quick-release clamp conduit joint includes the following calculation steps: Step S310, according to L1 and L2, it can be obtained that b=R+L1, c=R+L2, and b≥c is defined; Step S320, calculate the chord length using the triangle cosine angle formula Angle Angle Thus, we can conclude that θ = α - C; Step S330, finally calculate 10. A method for checking radial deviation of a quick-release clamp in a narrow area according to claim 9, characterized in that: In step S4, if the measured and calculated δ is greater than the value required by the specification, it is determined that the radial deviation of the quick release clamp is unqualified and needs to be assembled and adjusted; If the measured and calculated δ is less than or equal to the value required by the specification, the radial deviation of the quick release clamp is determined to be qualified.

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