CN219572920U - Special thread coupling sealing surface depth go-no gauge - Google Patents

Abstract

The utility model belongs to the technical field of thread detection of petroleum casing joints, in particular to a special thread joint sealing surface depth go-no-go gauge, which comprises: the body is provided with a first end, a second end and a middle part, the first end of the body is provided with an alignment part, and the middle part of the body is provided with more than one measuring part; the alignment part comprises a sealing fillet, a sealing inclined plane, a guiding taper and a negative angle inclined plane; the sealing fillet is provided with a first direction and a second direction, the negative angle inclined surface is connected with the sealing fillet in the first direction of the sealing fillet, one end of the sealing inclined surface is connected with the sealing fillet in the second direction of the sealing fillet, and the other end of the sealing inclined surface is connected with the guiding taper; the measuring part is in a groove shape and comprises a first inner wall and a second inner wall, wherein the first inner wall is in a lower tolerance limit, and the second inner wall is in an upper tolerance limit. The utility model has the advantages of convenient use and accurate detection.

Description

Special thread coupling sealing surface depth go-no gauge

Technical Field

The utility model belongs to the technical field of thread detection of petroleum casing joints, and particularly relates to a special thread joint sealing surface depth go-no-go gauge.

Background

In the special thread detection of the coupling used for the petroleum casing pipe, the requirement on the parameter of the thread sealing surface is high, the size of the special thread sealing surface needs to be 100% for implementing detection in order to ensure the product quality, wherein the sealing surface depth of the special thread coupling is generally detected by adopting an improved ball head depth gauge, and the measuring end of the ball head depth gauge adopts ball head tangential line positioning, so that when the ball head depth gauge is used, the special thread coupling needs to be calibrated on a standard module, is inconvenient to use and has low detection efficiency.

CN218916150U discloses a tool for measuring the length of the sealing surface of a special threaded joint of an oil casing, which comprises the following specific steps: step one, a handle is held by hand, the inner plane of a detection tool support is tightly attached to the top end of a sealing surface of a special threaded joint of an oil sleeve, and a tool is moved up and down to enable the detection head to be approximately close to the sealing surface of the special threaded joint of the oil sleeve; step two, sliding the detection rod backwards to enable the detection head cylinder to be tightly attached to the inner side surface of the support, checking the position reading of the scale mark of the outer surface of the support on the detection rod, and recording as D1; and thirdly, sliding the detection rod forwards to enable the center at the lower end of the detection head to be located at the final end point of the sealing surface, screwing the fixing nut, taking down the detection tool, checking the position reading of the scale mark on the detection rod on the outer surface of the support, recording as D2, and calculating the length D=D2-D1-R of the sealing surface of the special threaded joint according to the radius R of the detection head cylinder. However, this measurement method is cumbersome in steps and is prone to large errors.

Therefore, a measuring tool is urgently needed to solve the problems of inconvenient use, low inspection efficiency and low accuracy of the ball head depth gauge.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provides a measuring tool which is convenient to use, high in inspection efficiency and good in accuracy.

The technical scheme adopted for solving the technical problems is as follows:

a special thread coupling sealing face depth go-no gauge comprising: the body is provided with a first end, a second end and a middle part, the first end of the body is provided with an alignment part, and the middle part of the body is provided with more than one measuring part; the alignment part comprises a sealing fillet, a sealing inclined plane, a guiding taper and a negative angle inclined plane; the sealing fillet is provided with a first direction and a second direction, the negative angle inclined surface is connected with the sealing fillet in the first direction of the sealing fillet, one end of the sealing inclined surface is connected with the sealing fillet in the second direction of the sealing fillet, and the other end of the sealing inclined surface is connected with the guiding taper; the measuring part is in a groove shape and comprises a first inner wall and a second inner wall, wherein the first inner wall is in a lower tolerance limit, and the second inner wall is in an upper tolerance limit.

Further, the anti-slip sleeve is sleeved and fixed at the second end of the body.

Further, a mark is stuck on the upper body of each measuring part.

Further, the alignment portion is shaped and sized to conform to the product dimensions.

Further, the round radius of the sealing fillet is 1.62mm.

Further, the inclination of the sealing inclined surface is 1:10, and the guiding taper is 1:16.

Further, the angle of the negative angle bevel is 5-10 °.

The utility model has the advantages and positive effects that:

the utility model simplifies the measuring process by using the alignment part and the measuring part, and has the advantages of very convenient use, high detection efficiency and very strong accuracy.

Drawings

FIG. 1 is a cross-sectional view of an embodiment of the present utility model;

FIG. 2 is a cross-sectional view of another embodiment of the present utility model

FIG. 3 is an enlarged schematic view of an alignment portion;

FIG. 4 is a cross-sectional view of the present utility model in use with a special threaded collar.

Wherein the above figures include the following reference numerals:

1. an alignment section; 11. sealing the round corners; 12. sealing inclined planes; 13. guiding taper; 14. a negative angle bevel; 2. a measuring section; 21. limiting a lower tolerance; 22. upper tolerance limit; 23. a logo; 3. an anti-skid sleeve; 31. knurling; 32. a bolt; 4. a special threaded coupling.

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other. The utility model will be described in detail below with reference to the drawings in connection with embodiments.

It is noted that all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs unless otherwise indicated.

In the description of the present utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate an orientation or positional relationship based on that shown in the drawings, merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more of the described features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

A special thread coupling sealing face depth go-no gauge comprising: the body, the body has first end, second end and middle part, the first end system of body has alignment portion 1, the middle part system of body has more than one measuring part 2. In an embodiment, as shown in fig. 1, more than one measuring part 2 is provided, so that the depth go-no-go gauge can be suitable for measuring special threaded couplings 4 with multiple specifications, the measuring efficiency is improved, and the use is more convenient.

As shown in fig. 2-3, the alignment portion 1 includes a seal fillet 11, a seal chamfer 12, a guide taper 13, and a negative angle chamfer 14. The circular radius of the sealing fillet 11 is 1.62mm, the inclination of the sealing bevel 12 is 1:10, the guiding taper 13 is 1:16, and the angle of the negative angle bevel 14 is 10 °. The seal fillet 11 has a first direction and a second direction, the negative angle bevel 14 is connected to the seal fillet 11 in the first direction of the seal fillet 11, one end of the seal bevel 12 is connected to the seal fillet 11 in the second direction of the seal fillet 11, and the other end of the seal bevel 12 is connected to the guide taper 13. The alignment part 1 places the sealing fillet 11 of the depth go no-go gauge at the sealing surface of the special thread coupling and the torque stopping shoulder, so that the sealing fillet 11 is tangent to the two surfaces.

The measuring part 2 is groove-shaped and comprises a first inner wall and a second inner wall, wherein the first inner wall is a lower tolerance limit 21, and the second inner wall is an upper tolerance limit 22. The groove-shaped measuring part 2 is used for judging whether the end face of the special thread coupling 4 is between the first inner wall and the second inner wall of the groove, if so, the end face of the special thread coupling 4 is judged to be qualified between the first inner wall and the second inner wall of the groove, otherwise, the end face of the special thread coupling 4 is judged to be unqualified.

In another embodiment, as shown in fig. 2, the anti-slip sleeve 3 further comprises an anti-slip sleeve 3, and the anti-slip sleeve 3 is sleeved and fixed on the second end of the body. In order to avoid directly holding the body of the depth go-no-go gauge and improve the great comfort level of the depth go-no-go gauge, an anti-skid sleeve 3 is fixedly arranged on the body of the depth go-no-go gauge.

The anti-slip sleeve 3 is locked with the body through a bolt 32, and knurling 31 is formed on the outer annular wall of the anti-slip sleeve 3. The bolt 32 locks the body of the depth go-no-go gauge to prevent the depth go-no-go gauge from moving, so that the operation is convenient, errors are reduced in the measuring process, and the accuracy of a measuring result is improved. The knurling 31 is formed on the outer circumferential wall of the anti-slip sleeve 3, so that the roughness of the contact surface can be increased, and the friction can be increased, thereby preventing slipping off during use.

In order to make the specific detection information of each measuring section 2 clearer, such as the size, specification, application range, etc. detected by the measuring section 2, a mark 23 is stuck on the upper body of each measuring section 2.

The shape and the size of the alignment part 1 are consistent with those of the product, so that the alignment part is tightly attached to the thread sealing part of the coupling, the measurement is simpler and more accurate, and the measurement error is reduced.

As shown in fig. 4, the use method is as follows: during measurement, a mark 23 with the same information as the special thread coupling 4 is determined according to the detected information of the special thread coupling 4, a groove corresponding to the mark 23 in the depth go-no-go gauge measuring part 2 is selected, a sealing fillet 11 of the depth go-no-go gauge is placed at the sealing surface of the special thread coupling and the torque stopping shoulder to enable the sealing fillet 11 to be tangent with the two surfaces, whether the end face of the special thread coupling 4 is located between the first inner wall and the second inner wall of the groove or not is checked at the moment, if so, the end face of the special thread coupling 4 is judged to be qualified between the first inner wall and the second inner wall of the groove, and otherwise, the end face of the special thread coupling 4 is judged to be unqualified.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (7)

1. A special thread collar sealing face depth go-no-go gauge, comprising:

the device comprises a body, a measuring part and a measuring part, wherein the body is provided with a first end, a second end and a middle part, the first end of the body is provided with an alignment part (1), and the middle part of the body is provided with more than one measuring part (2);

the alignment part (1) comprises a sealing fillet (11), a sealing inclined plane (12), a guiding taper (13) and a negative angle inclined plane (14); the sealing fillet (11) has a first direction and a second direction, the negative angle bevel (14) is connected with the sealing fillet (11) in the first direction of the sealing fillet (11), one end of the sealing bevel (12) is connected with the sealing fillet (11) in the second direction of the sealing fillet (11), and the other end of the sealing bevel (12) is connected with the guiding taper (13);

the measuring part (2) is in a groove shape and comprises a first inner wall and a second inner wall, wherein the first inner wall is a lower tolerance limit (21), and the second inner wall is an upper tolerance limit (22).

2. The special thread coupling sealing surface depth go-no-go gauge according to claim 1, further comprising an anti-slip sleeve (3), wherein the anti-slip sleeve (3) is fixedly sleeved at the second end of the body.

3. A special thread collar sealing face depth go no-go gauge according to claim 1, characterized in that a logo (23) is glued on the upper body of each measuring part (2).

4. A special thread collar sealing face depth go-no-go gauge according to claim 1, characterized in that the shape and size of the alignment part (1) are consistent with the shape and size of the product.

5. A special thread collar sealing face depth go-no-go gauge according to claim 1, characterized in that the round radius of the seal fillet (11) is 1.62mm.

6. A special thread collar sealing face depth go-no-go gauge according to claim 1, characterized in that the slope of the sealing bevel (12) is 1:10 and the guiding taper (13) is 1:16.

7. A special thread collar sealing face depth go-no-go gauge according to claim 1, characterized in that the angle of the negative angle bevel (14) is 5-10 °.