API (American Petroleum Institute) oil casing thread J value ruler

Abstract

The utility model relates to an API oil casing thread J value ruler. According to the technical scheme, one end of a main scale is provided with a first measuring jaw and a third measuring jaw, the middle of the main scale is provided with a second vernier scale installation sliding groove and a first vernier scale installation cavity, a first vernier scale is installed on the lower side of the first vernier scale installation cavity of the main scale in a sliding mode, and one end of the first vernier scale is provided with a second measuring jaw; the second vernier scale is slidably installed at a second vernier scale installation chute of the main scale, and one end of the second vernier scale is provided with a fourth measuring jaw. The upper side of the other end of the main scale is provided with a retaining nut, and the outer end of the first vernier scale mounting cavity is provided with a retaining block; a standard graduated scale is arranged on the lower side of the main scale. The utility model has the beneficial effects that the length of the coupling is measured through the first measuring jaw and the second measuring jaw, 1 / 2 of the length of the coupling is quickly obtained, and the actual value of the J value is directly read by using the third measuring jaw and the fourth measuring jaw, so that the field inspection efficiency is improved, calculation errors are avoided, and the purpose of increasing efficiency is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of oil casing processing and detection, in particular to an API oil casing thread J value ruler. BACKGROUND

[0002] In the oil industry, API standards are a series of technical standards developed by the American Petroleum Institute (API) to improve the safety of oil and gas operations, environmental protection and sustainability. Among them, API oil casing is low in threshold when produced in China, and many enterprises can process it, leading to fierce competition. The price of its products is relatively low, and with the increase of labor cost, it is difficult for enterprises to obtain high returns by producing API oil casing. Many companies improve production efficiency to increase enterprise revenue through thin profit and more sales. During the actual production of API oil casing, the pin and box (internal thread) need to be screwed, and after screwing, the J value (the distance between the end face of the external thread after screwing and the center of the box) needs to be checked,

[0003] J value is an important parameter in API round thread connection, which is used to control the tightness of thread connection and is one of the important parameters to determine the quality of thread connection. When measuring conventionally, two rulers are needed, a vernier caliper and a depth ruler. First, measure the length of the box, then calculate the 1 / 2 length of the box, then measure the distance between the end face of the external thread after screwing and the outer end face of the box, then calculate the difference between the two lengths, and finally determine whether the difference is within the range of J value. SUMMARY

[0004] The utility model aims at the above-mentioned defects existing in the prior art, and provides an API oil casing thread J value ruler, which saves the two-step calculation process, can directly measure the actual range of J value, improves the inspection efficiency, avoids the probability of calculation error, and is an effective measuring tool for improving production efficiency.

[0005] The utility model discloses a kind of API oil casing thread J value ruler, its technical scheme is: including first claw (1), second claw (2), third claw (3), fourth claw (4), main ruler (5), first vernier (6), second vernier (7), second vernier installation sliding groove (8), locknut (9), stop block (10), standard scale (11), first vernier installation cavity (12), one end of the main ruler (5) is equipped with first claw (1) and third claw (3), the middle part of main ruler (5) is equipped with second vernier installation sliding groove (8) and first vernier installation cavity (12), first vernier (6) is slidably installed in the lower side of the first vernier installation cavity (12) of main ruler (5), and one end of first vernier (6) is equipped with second claw (2), second vernier (7) is slidably installed at the second vernier installation sliding groove (8) of main ruler (5), and one end of second vernier (7) is equipped with fourth claw (4);Locknut (9) is installed on the upside of the other end of main ruler (5), and stop block (10) is installed on the outer end of first vernier installation cavity (12);The downside of the main ruler (5) is equipped with standard scale (11).

[0006] Preferably, the first claw (1) is located on the left end of the main ruler (5), and the third claw (3) is located on the upside of the left end of the main ruler (5), and the right end surface of the first claw (1) and the left end surface of the third claw (3) are located on the same vertical plane.

[0007] Preferably, the upper side of the standard scale (11) of the main ruler (5) is provided with a small scale (13) with a spacing of 0.5 cm.

[0008] Preferably, the left end of the second vernier (7) is provided with a fourth claw (4), and the right end of the second vernier (7) is provided with a second locking nut (7.1), and the lower cavity of the second vernier (7) is provided with an opening, and the opening is provided with a guide protrusion (7.2), and the guide protrusion (7.2) is slidably connected with the second vernier installation sliding groove (8) of the main ruler, and the lower side of the second vernier (7) is provided with a second vernier scale (7.3).

[0009] Preferably, the left end of the first vernier (6) is provided with a second claw (2), and the right end of the first vernier (6) is provided with a first locking nut (6.1) and a thrust block (6.2), and the middle part of the first vernier (6) is provided with a transverse guide anti-loose groove (6.3), and the guide anti-loose groove (6.3) is slidably connected with the standard scale (11) to realize mobile measurement.

[0010] Preferably, the upper side of the guide anti-loose groove (6.3) is provided with a first scale (6.4), and the lower side is provided with a third scale (6.6), and the top of the first vernier (6) is provided with a second scale (6.5).

[0011] The utility model discloses the beneficial effect is: the utility model discloses through using the first claw and the second claw measure the actual length of the coupling, through the standard scale of main ruler watches the coupling length, when measuring the actual length of the coupling, the 1 / 2 length position of the coupling has been found, directly through the removal first vernier scale, remove its to the main ruler scale corresponding position and lock the nut, use the third claw and the fourth claw measure the length between the outer thread end surface after screwing and the coupling outer end and lock the nut, at this time, through the scale of first vernier scale and the scale of second vernier scale, can directly read out actual J value, then compare with J value range, check whether it is in its range, at this time, J value measurement is completed, improves the inspection efficiency on site, and will not appear calculation error, thereby improves the class production, reaches the purpose of increasing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is the whole structure schematic diagram of the utility model;

[0013] Figure 2 It is the structure schematic diagram of main ruler;

[0014] Figure 3 It is the structure schematic diagram of fourth claw and second vernier scale;

[0015] Figure 4 It is the side view of fourth claw and second vernier scale;

[0016] Figure 5 It is the structure schematic diagram of second claw and first vernier scale;

[0017] Figure 6 It is the side view of second claw and first vernier scale;

[0018] Figure 7 It is the coupling and oil casing outer thread connection schematic diagram;

[0019] Figure 8 It is the schematic diagram of the utility model measurement coupling length;

[0020] Figure 9 It is the structure schematic diagram of quickly finding 1 / 2 coupling length;

[0021] Figure 10 It is the structure schematic diagram of measuring the distance between the coupling outer end surface and pipe end surface after the coupling and outer thread screwing

[0022] Figure 11 It is the schematic diagram of directly reading out J value;

[0023] In the above figure: the first claw 1, the second claw 2, the third claw 3, the fourth claw 4, the main ruler 5, the first vernier 6, the second vernier 7, the second vernier installation sliding groove 8, the anti-loosening nut 9, the anti-loosening block 10, the standard scale 11, the first vernier installation cavity 12, the small scale 13, the first locking nut 6.1, the thrust block 6.2, the guide anti-loosening groove 6.3, the first scale 6.4, the second scale 6.5, the third scale 6.6, the second locking nut 7.1, the guide protrusion 7.2, the second vernier scale 7.3, the coupling a, the oil pipe or casing b, the coupling 1 / 2 length position a1, the outer end surface of the oil pipe or casing b1. DETAILED DESCRIPTION

[0024] The preferred embodiments of the utility model are described below in combination with the drawings, and it should be understood that the preferred embodiments described herein are only used for illustrating and explaining the utility model, and are not used for limiting the utility model.

[0025] Embodiment 1, refer to Figures 1-11 The utility model discloses a kind of API oil casing thread J value ruler, including first claw 1, second claw 2, third claw 3, fourth claw 4, main ruler 5, first vernier 6, second vernier 7, second vernier installation sliding groove 8, anti-loosening nut 9, anti-loosening block 10, standard scale 11, first vernier installation cavity 12, one end of the main ruler 5 is equipped with first claw 1 and third claw 3, and the middle part of main ruler 5 is equipped with second vernier installation sliding groove 8 and first vernier installation cavity 12, first vernier 6 is slidably installed in the lower side of the first vernier installation cavity 12 of main ruler 5, and one end of first vernier 6 is equipped with second claw 2, and second vernier 7 is slidably installed at the second vernier installation sliding groove 8 of main ruler 5, and one end of second vernier 7 is equipped with fourth claw 4;Anti-loosening nut 9 is installed on the upper side of the other end of main ruler 5, and anti-loosening block 10 is installed on the outer end of first vernier installation cavity 12;The lower side of the main ruler 5 is equipped with standard scale 11.

[0026] Wherein, the above-mentioned first claw 1 is located at the lower side of the left end of main ruler 5, and the third claw 3 is located at the upper side of the left end of main ruler 5, and the right end surface of the first claw 1 and the left end surface of the third claw 3 are located on the same vertical plane.

[0027] Refer to Figure 3 And Figure 4 The utility model discloses that the upper side of the left end of second vernier 7 is equipped with fourth claw 4, the upper part of the right end of second vernier 7 is equipped with second locking nut 7.1, the lower part of second vernier 7 is equipped with opening in cavity, and the opening is equipped with guide protrusion 7.2, and the second vernier installation sliding groove 8 on the main ruler is slidably cooperated with guide protrusion 7.2, and the lower side of second vernier 7 is equipped with second vernier scale 7.3;The left end surface of fourth claw 4 and the right end surface of third claw 3 are used to measure J value.

[0028] With reference to Figure 5 And Figure 6 The utility model discloses the left end downside of first vernier caliper 6 is equipped with second calliper 2, and the lower part of right end of first vernier caliper 6 is equipped with first lock nut 6.1 and thrust block 6.2, the middle part of first vernier caliper 6 is equipped with the transverse guide anti -slip groove 6.3, the guide anti -slip groove 6.3 and standard scale 11 sliding fit realize mobile measurement.

[0029] With reference to Figures 7-11 The utility model discloses the left end downside of first vernier caliper 6 is equipped with second calliper 2, and the lower part of right end of first vernier caliper 6 is equipped with first lock nut 6.1 and thrust block 6.2, the middle part of first vernier caliper 6 is equipped with the transverse guide anti -slip groove 6.3, the guide anti -slip groove 6.3 and standard scale 11 sliding fit realize mobile measurement.

[0030] The utility model discloses a API oil casing thread J value ruler, including first calliper 1, second calliper 2, third calliper 3, fourth calliper 4, main scale 5, first vernier caliper 6, second vernier caliper 7, second vernier caliper installation sliding slot 8, anti -unhook nut 9, anti -unhook block 10, standard scale 11, first vernier caliper installation cavity 12, one end of main scale 5 is equipped with first calliper 1 and third calliper 3, and the middle part of main scale 5 is equipped with second vernier caliper installation sliding slot 8 and first vernier caliper installation cavity 12, first vernier caliper 6 is slidably installed at the lower side of first vernier caliper installation cavity 12 of main scale 5, and one end of first vernier caliper 6 is equipped with second calliper 2, and second vernier caliper 7 is slidably installed at second vernier caliper installation sliding slot 8 of main scale 5, and one end of second vernier caliper 7 is equipped with fourth calliper 4, and the upper side of the other end of main scale 5 is installed anti -unhook nut 9, and the outer end of first vernier caliper installation cavity 12 is installed anti -unhook block 10, the lower side of main scale 5 is equipped with standard scale 11.

[0031] The difference between this embodiment and embodiment 1 is:

[0032] The lower side of main scale 5 of this embodiment is provided with two scales, one is 1:1 standard scale 11, and the scale of one group is 1cm, and the upper side is 1:2 scale, and the scale of one group is 0.5cm small scale 13, which is convenient for realizing fast measurement.

[0033] In addition, the upper side of the guide anti-off groove 6.3 of the first vernier scale 6 is provided with the first scale 6.4, the lower side is provided with the third scale 6.6, and the top of the first vernier scale 6 is provided with the second scale 6.5, so that rapid measurement can be realized.

[0034] The above is only the preferred embodiment of the present application, and any skilled person in the art can modify the technical solutions described above or modify them into equivalent technical solutions. Therefore, any simple modification or equivalent transformation according to the technical solutions of the present application is within the scope of protection of the present application.

Claims

1. An API oil casing thread J-value gauge characterized by: The utility model relates to a vernier caliper, including first amount claw (1), second amount claw (2), third amount claw (3), fourth amount claw (4), main ruler (5), first vernier (6), second vernier (7), second vernier installation sliding groove (8), stop nut (9), stop block (10), standard scale (11), first vernier installation cavity (12), one end of main ruler (5) is equipped with first amount claw (1) and third amount claw (3), and the middle part of main ruler (5) is equipped with second vernier installation sliding groove (8) and first vernier installation cavity (12), first vernier (6) is slidably installed at the lower side of first vernier installation cavity (12) of main ruler (5), and one end of first vernier (6) is equipped with second amount claw (2), and second vernier (7) is slidably installed at second vernier installation sliding groove (8) of main ruler (5), and one end of second vernier (7) is equipped with fourth amount claw (4), stop nut (9) is installed on the upside of the other end of main ruler (5), and stop block (10) is installed at the outer end of first vernier installation cavity (12), the lower side of main ruler (5) is equipped with standard scale (11).

2. The API oil casing thread J-value gauge of claim 1, characterized by: The first amount claw (1) is located at the left end of the lower side of the main ruler (5), the third amount claw (3) is located at the left end of the upper side of the main ruler (5), and the right end face of the first amount claw (1) and the left end face of the third amount claw (3) are located on the same vertical plane.

3. An API oil casing thread J-value gauge according to claim 2 characterised by: The upper side of the standard scale (11) of the main ruler (5) is provided with small scales (13) with a spacing of 0.5 cm.

4. The API oil casing thread J-value gauge of claim 2, wherein: The left end of the upper side of the second vernier (7) is provided with a fourth amount claw (4), the right end of the upper part of the second vernier (7) is provided with a second locking nut (7.1), and the lower cavity of the second vernier (7) is provided with an opening. The left end of the upper side of the second vernier (7) is provided with a fourth amount claw (4), the right end of the upper part of the second vernier (7) is provided with a second locking nut (7.1), and the lower cavity of the second vernier (7) is provided with an opening.

5. The API oil casing thread J-value gauge of claim 4, characterized by: The left end of the lower side of the first vernier (6) is provided with a second amount claw (2), the right end of the lower part of the first vernier (6) is provided with a first locking nut (6.1) and a thrust block (6.2), the middle part of the first vernier (6) is provided with a transverse guide anti-dropping groove (6.3), and the guide anti-dropping groove (6.3) is slidably connected with the standard scale (11) to realize mobile measurement.

6. An API oil casing thread J-value gauge according to claim 5 characterised by: The upper side of the guide anti-dropping groove (6.3) is provided with a first scale (6.4), the lower side is provided with a third scale (6.6), and the top of the first vernier (6) is provided with a second scale (6.5).

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