CN2852041Y

CN2852041Y - Petroleum casing screw thread measurer

Info

Publication number: CN2852041Y
Application number: CN 200520124378
Authority: CN
Inventors: 徐爱民; 王鑫; 时振清; 王鹏; 王延文; 张建; 吕维华
Original assignee: Huanghe Drilling Co of Sinopec Shengli Petroleum Administration Bureau
Current assignee: Huanghe Drilling Co of Sinopec Shengli Petroleum Administration Bureau
Priority date: 2005-11-08
Filing date: 2005-11-08
Publication date: 2006-12-27
Anticipated expiration: 2015-11-08

Abstract

The utility model discloses a petroleum casing tube screw thread measurer, which comprises a ruler, a clamping jaw and a sliding clamping jaw, wherein the sliding clamping jaw and the ruler are connected in a sliding mode; the lower ends of the clamping jaw and the sliding clamping jaw are processed with measuring surfaces, wherein the taper of which is the same with the taper of a measured casing tube; the measuring surfaces of the clamping jaw and the sliding clamping jaw are not vertical to the ruler. The utility model can directly detect the compact distance of casing tube screw threads and measure the taper of the measuring surfaces at both sides of the clamping jaw and the casing tube screw threads by improving a slide caliper; the petroleum casing tube screw thread measurer can directly measure compact distance, screw thread taper and ovality. The petroleum casing tube screw thread measurer can enhance the inspection efficiency of casing tube screw threads. Simultaneously reduce labor intensity, and reduces screw thread damage caused in inspection process.

Description

A kind of petroleum casing pipe screw measurement measurer

Technical field the utility model relates to a kind of measurer of measuring screw thread, especially a kind of measurer of measuring the petroleum casing pipe screw thread.

Background technology is in the casing threads process, screw thread process operation person processes casing threads, all to use thread profile gauge to detect the tight distance of screw thread, be 3 buttons ± 1 button (9.525mm ± 3.175mm) closely apart from deviation, if defective needs are repaired again, screw thread profile gauge once more, qualified until self check.The reviewer needs check one by one to workpiece, needs to screw thread profile gauge simultaneously.The problem that exists of casing gauge is that weight is big, and it is big that the operator moves physical demands repeatedly, feels very painstaking.Simultaneously because the ordinary casing screw thread is per inch 8 teeth, be that pitch is 3.175mm, thread profile gauge weight is big and the pitch of screw thread is little, each screw thread screws very very easily thread alternating of difficulty, even normally screw because the thread gluing phenomenon has taken place the influence of thread profile gauge weight, makes its burr of screw thread influence casing threads and uses (sealing by form of thread, tapering), be difficult to guarantee its normal sealing, and screw and cause thread failure in the process, cause disqualification rate very high all the time, need reprocess in a large number owing to screw.At present the casing gauge that uses can detect the tight distance of screw thread, but for the large scale casing threads, and for example 13 ³/ ₈CSG and 20CSG thread profile gauge are because button rule are very heavy and very easily thread gluing, damaged screw button.Operator's physical demands is big simultaneously.With TF13 3/8 * 51/2-35 casinghead is example, dimension control is a general data with steel ring slot size, thread taper, tight distance, 13 its feeler gauges of 3/8CSG casing gauge weigh 24 kilograms, 23 kilograms of ring gauges, casing threads are the fine thread of per inch 8 teeth, and button rule screw easy thread alternating, thread gluing, 20CSG casing gauge weight is heavier, an operator is difficult to screw separately casing threads, and operator's labour intensity is big, the present domestic easy detection method that do not have.

The summary of the invention the purpose of this utility model is a kind of petroleum casing pipe screw measurement measurer of design.A kind of petroleum casing pipe screw measurement measurer, it comprises ruler, claw and the claw that moves about, and moving about is slidingly connected between claw and the ruler, and claw and ruler are perpendicular, are processed with and the identical measurement face of tested sleeve pipe tapering in the claw and the claw lower end of moving about.The measurement face of the claw and the claw that moves about and ruler out of plumb.The utility model is the improvement that vernier caliper is carried out, it can directly detect the tight distance of casing threads, the measurement face of measuring the claw both sides is a casing thread taper, measures claw and comprises claw and move about claw that the utility model can directly be measured tight distance, thread taper and ovality.Reach convenient, accurate, reasonable, the checkability of casing threads is improved greatly, reduced labour intensity simultaneously, reduced the thread failure that causes in the checkout procedure.

Description of drawings Fig. 1 is a structural representation of the present utility model.1-claw among the figure; The 2-claw that moves about; The 3-ruler.

Embodiment is with reference to accompanying drawing 1, a kind of petroleum casing pipe screw measurement of the utility model measurer, it is an improved vernier caliper, it comprises ruler (3), claw (1) and the claw that moves about (2), move about and be slidingly connected between claw (2) and the ruler (3), claw (1) is perpendicular with ruler (3), is processed with and the identical measurement face of tested sleeve pipe tapering in claw (1) and the claw that moves about (3) lower end.The measurement face of measuring the claw both sides is casing thread taper (1:16), and claw (1) is fixed on the ruler (3), and the claw that moves about (2) can be gone up at ruler (3) and slide.During measurement, measure the side and the applying of casing thread taper inclined-plane of claw, whether the applying degree by two surfaces casing threads tapering as can be seen meets the requirements.Measure closely apart from the time because casing threads is with the processing of moulding cutter now, therefore all standardization of parameter such as the tooth form of screw thread, tooth height can use this utility model to measure the big footpath of small end of screw thread, just can calculate the tight distance of casing threads.With slide calliper rule Rotate 180 °, just can measure the screw thread small end big footpath vertical with last direction, both differences just can be released the ovality that is verified casing threads.

Claims

1, a kind of petroleum casing pipe screw measurement measurer, it comprises ruler, claw and the claw that moves about, it is characterized in that moving about is slidingly connected between claw and the ruler, is processed with and the identical measurement face of tested sleeve pipe tapering the measurement face and ruler out of plumb of the claw and the claw that moves about in the claw and the claw lower end of moving about.