Adjustable thread calibration measuring tool

Abstract

The utility model provides an adjustable thread calibration measuring tool, which belongs to the technical field of oil casing thread processing, and comprises a measuring tool body, the measuring tool body is matched with a calibration reference block for use, the measuring tool body comprises a measuring scale, and one end of the measuring scale is fixedly provided with a measuring tool fixing block. The measuring scale is provided with a measuring tool movable block which moves along the length direction, the measuring tool fixed block comprises an upper fixed block and a lower fixed block, the measuring tool movable block comprises an upper movable block and a lower movable block, and the opposite surfaces of the upper fixed block and the upper movable block are respectively provided with a female end thread taper calibration surface and a female end sealing surface calibration surface from bottom to top. And the opposite surfaces of the lower fixed block and the lower movable block are respectively provided with a male end thread taper calibration surface and a male end sealing surface calibration surface from top to bottom. The adjustable thread proofreading measuring tool provided by the utility model is adaptive to proofreading of threads of different models, various types of measuring tools do not need to be prepared, and the manufacturing cost is reduced.

Description

Technical Field

[0001] This utility model belongs to the field of oil casing thread processing technology, and more specifically, it relates to an adjustable thread calibration gauge. Background Technology

[0002] Oil casing is a special steel pipe used to fix the well wall during oil and gas well production. The main API standard thread types used in the industry are LC, SC and BC. However, with the development of oil well production technology and the increasing number of oil and gas wells, API threads can no longer meet the sealing requirements of oil wells, and the use of special gas-tight threads is becoming more and more common.

[0003] The measuring tools used in the machining of special thread have the following shortcomings: the male end thread calibration datum, the male end sealing surface calibration datum, the female end thread calibration datum, and the female end sealing surface calibration datum are all single-unit designs, there are many types of measuring tools, the cost is high, and they are inconvenient to carry. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable thread calibration gauge that can be adapted to different types of thread calibration, thereby reducing production costs.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: An adjustable thread calibration gauge is provided, comprising a gauge body, which is used in conjunction with a calibration reference block. The calibration reference block includes an upper reference block and a lower reference block. The upper reference block has a male end thread calibration reference surface and a male end sealing surface calibration reference surface respectively provided on both sides from bottom to top. The lower reference block has a reference groove at its lower end, and a female end thread calibration reference surface and a female end sealing surface calibration reference surface are respectively provided on both sides of the reference groove from top to bottom. The gauge body includes a measuring scale, and a gauge is fixedly mounted on one end of the measuring scale. The measuring scale is provided with a movable measuring block that moves along the length direction. The fixed measuring block includes an upper fixed block located above the measuring scale and a lower fixed block located below the measuring scale. The movable measuring block includes an upper movable block located above the measuring scale and a lower movable block located below the measuring scale. The inner surfaces of the upper fixed block and the upper movable block are respectively provided with a female end thread taper calibration surface and a female end sealing surface calibration surface from bottom to top. The outer surfaces of the lower fixed block and the lower movable block are respectively provided with a male end thread taper calibration surface and a male end sealing surface calibration surface from top to bottom.

[0006] In one possible implementation, the measuring scale is set horizontally, the measuring tool fixing block is vertically fixed to one end of the measuring scale, and the measuring tool movable block is set vertically and slides laterally on the measuring scale.

[0007] In one possible implementation, the gauge fixing block is integrally formed on one end of the measuring scale.

[0008] In one possible implementation, a through hole is provided on one side of the middle portion of the measuring instrument movable block, and the through hole is fitted onto the measuring scale and slides along the length direction of the measuring scale.

[0009] In one possible implementation, a notch is provided on one side of the through hole, the width of which is smaller than the width of the measuring scale.

[0010] In one possible implementation, the lower side of the front end face of the measuring scale is provided with a main scale line along the length direction, and the lower edge of the notch is provided with an auxiliary scale line.

[0011] In one possible implementation, a main scale line is provided on the upper side of the front end face of the measuring scale along the length direction, and an auxiliary scale line is provided on the upper edge of the notch.

[0012] In one possible implementation, the gauge body is made of a metallic material.

[0013] The beneficial effects of the adjustable thread calibration gauge provided by this utility model are as follows: Compared with the prior art, the gauge body is calibrated using a calibration reference block. The male end thread calibration reference surface, male end sealing surface calibration reference surface, female end thread calibration reference surface, and female end sealing surface calibration reference surface of the calibration reference block correspond to the male end thread taper calibration surface, male end sealing surface calibration surface, female end thread taper calibration surface, and female end sealing surface calibration surface of the gauge body, respectively. The reading of the measuring scale corresponding to the movable block of the gauge is read. The gauge body is used to calibrate and measure the API thread of the corresponding oil casing. For different types of threads, the calibration reference block can be adapted by adjusting the measuring movable block. The calibration of different types of threads can be adapted without preparing multiple types of gauges, thus reducing manufacturing costs. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a schematic diagram of the structure of the measuring tool body provided in the first embodiment of the present invention;

[0016] Figure 2 for Figure 1 Sectional view along the middle AA;

[0017] Figure 3 This is a schematic diagram of the structure of the measuring tool body provided in the second embodiment of the present utility model;

[0018] Figure 4 A schematic diagram of the structure of the calibration reference block provided by this utility model.

[0019] In the picture:

[0020] 100. Measuring instrument body; 110. Measuring scale; 120. Measuring instrument fixing block; 130. Measuring instrument moving block; 140. Female end thread taper calibration surface; 150. Female end sealing surface calibration surface; 160. Male end thread taper calibration surface; 170. Male end sealing surface calibration surface; 180. Notch; 200. Calibration reference block; 210. Male end thread calibration reference surface; 220. Male end sealing surface calibration reference surface; 230. Reference groove; 240. Female end thread calibration reference surface; 250. Female end sealing surface calibration reference surface. Detailed Implementation

[0021] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] Unless otherwise explicitly specified, the use of terms such as "first," "second," or "third" is intended to distinguish different objects, not to describe a specific order.

[0023] Unless otherwise expressly defined, the use of directional terms such as “center,” “lateral,” “longitudinal,” “horizontal,” “vertical,” “top,” “bottom,” “inner,” “outer,” “upper,” “lower,” “front,” “back,” “left,” “right,” “clockwise,” “counterclockwise,” “high,” and “low” to indicate orientation or positional relationships is based on the orientation and positional relationships shown in the accompanying drawings and is only for the convenience of describing the present invention and simplifying the description. It is not intended to indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the specific protection scope of the present invention.

[0024] Please see Figures 1 to 4This invention provides an adjustable thread calibration gauge. The adjustable thread calibration gauge includes a gauge body 100, which is used in conjunction with a calibration reference block 200. The calibration reference block 200 includes an upper reference block and a lower reference block. The upper reference block has a male end thread calibration reference surface 210 and a male end sealing surface calibration reference surface 220 respectively arranged from bottom to top on both sides. The lower reference block has a reference groove 230 at its lower end, and a female end thread calibration reference surface 240 and a female end sealing surface calibration reference surface 250 respectively arranged from top to bottom on both sides of the reference groove 230. The gauge body 100 includes a measuring scale 110, and a gauge fixing block 120 is fixedly mounted on one end of the measuring scale 110. A measuring tool movable block 130 that moves along the length direction is provided on 110. The measuring tool fixed block 120 includes an upper fixed block located above the measuring scale 110 and a lower fixed block located below the measuring scale 110. The measuring tool movable block 130 includes an upper movable block located above the measuring scale 110 and a lower movable block located below the measuring scale 110. The inner surfaces of the upper fixed block and the upper movable block are respectively provided with a female end thread taper calibration surface 140 and a female end sealing surface calibration surface 150 from bottom to top. The outer surfaces of the lower fixed block and the lower movable block are respectively provided with a male end thread taper calibration surface 160 and a male end sealing surface calibration surface 170 from top to bottom.

[0025] This utility model provides an adjustable thread calibration gauge. Compared with the prior art, it uses a calibration reference block 200 to calibrate the gauge body 100. The male end thread calibration reference surface 210, male end sealing surface calibration reference surface 220, female end thread calibration reference surface 240, and female end sealing surface calibration reference surface 250 of the calibration reference block 200 correspond to the male end thread taper calibration surface 160, male end sealing surface calibration surface 170, female end thread taper calibration surface 140, and female end sealing surface calibration surface 150 of the gauge body 100, respectively. The reading of the measuring scale 110 corresponding to the measuring movable block 130 is read. The gauge body 100 is used to calibrate and measure the API thread of the corresponding oil casing. For different types of threads, the calibration reference block 200 can be adjusted to adapt to different types of threads. This eliminates the need to prepare multiple types of measuring tools and reduces manufacturing costs.

[0026] Please see Figure 1 and Figure 3 The measuring scale 110 is horizontally set, the measuring tool fixing block 120 is vertically fixed to one end of the measuring scale 110, and the measuring tool movable block 130 is vertically set and slides laterally on the measuring scale 110. The measuring tool movable block 130 slides laterally on the measuring scale 110, which can easily adapt to the measurement needs of different lengths. It can achieve precise sliding by manual operation or with the help of some mechanical devices (such as lead screws, gears, etc.).

[0027] Specifically, the measuring tool fixing block 120 is integrally molded onto one end of the measuring scale 110. This integral molding process avoids the connection gaps and error accumulation problems that may occur with traditional splicing methods, greatly improving the stability and structural strength of the entire measuring device. The measuring tool fixing block 120 and the measuring scale 110 are perfectly integrated in terms of material, maintaining a high degree of consistency in their physical and chemical properties, effectively reducing measurement errors caused by differences in the thermal expansion coefficients between different materials.

[0028] Please see Figure 1 and Figure 2 A through hole is provided on one side of the middle portion of the movable block 130 of the measuring instrument. The through hole is fitted onto the measuring scale 110 and slides along the length of the measuring scale 110. When the through hole is fitted onto the measuring scale 110, a unique relationship is formed between the two, which is both tightly fitted and allows for flexible sliding. This tight fit effectively avoids the wobbling and offset of the movable block during the sliding process, thereby minimizing the generation of measurement errors. Its smooth sliding along the length of the measuring scale 110 makes diverse measurement needs possible. In addition, to further optimize the sliding performance, the inner wall of the through hole is usually subjected to special surface treatment, such as fine grinding or coating, to reduce the coefficient of friction, making the movable block 130 of the measuring instrument slide more smoothly, while also reducing wear caused by friction, extending the service life of the entire measuring device, ensuring its long-term stable and accurate measurement performance, and meeting the stringent requirements for high-precision measurement in industrial production and scientific research fields.

[0029] Preferably, a notch 180 is provided on one side of the through hole, and the width of the notch 180 is smaller than the width of the measuring scale 110. When the measuring tool movable block 130 is fitted onto the measuring scale 110 through the through hole, the presence of the notch 180 will not affect the tight fit between the measuring scale 110 and the through hole, ensuring that the measuring tool movable block 130 can slide smoothly along the length direction of the measuring scale 110, and will also provide more flexibility and operability for the measurement process. The position of the notch 180 makes it convenient to observe the degree readings on the measuring scale 110.

[0030] In the first embodiment, a main scale line is provided on the lower side of the front face of the measuring scale 110 along the length direction, and an auxiliary scale line is provided on the lower edge of the notch 180. In the second embodiment, a main scale line is provided on the upper side of the front face of the measuring scale 110 along the length direction, and an auxiliary scale line is provided on the upper edge of the notch 180. The above two embodiments provide two positional relationships between the main scale line and the auxiliary scale line, respectively. The auxiliary scale line is used in conjunction with the main scale line, which greatly compensates for the inaccuracy of the main scale line in some cases. When the size of the object being measured is between two adjacent graduations of the main scale line, the auxiliary scale line plays an important role. The operator can read the measurement value more accurately by observing the relative position of the auxiliary scale line and the main scale line on the measuring scale 110. The main scale line on the lower or upper side of the front face of the measuring scale 110 and the auxiliary scale line on the lower or upper edge of the notch 180 of the measuring instrument movable block 130 cooperate to jointly construct an efficient and accurate measurement system.

[0031] Specifically, the measuring instrument body 100 is made of metal. The metal materials used to manufacture the measuring instrument body 100 include stainless steel, carbon steel, aluminum alloy, etc., which will not be elaborated here.

[0032] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable thread alignment gauge, comprising a gauge body (100) used in cooperation with an alignment reference block (200), the alignment reference block (200) comprising an upper reference block and a lower reference block, two sides of the upper reference block are respectively provided with a male thread alignment reference surface (210) and a male sealing surface alignment reference surface (220) from bottom to top, a lower end of the lower reference block is provided with a reference groove (230), two sides of the reference groove (230) are respectively provided with a female thread alignment reference surface (240) and a female sealing surface alignment reference surface (250) from top to bottom, characterized in that, The measuring tool body (100) comprises a measuring scale (110), one end of the measuring scale (110) is fixedly provided with a measuring tool fixed block (120), the measuring scale (110) is provided with a measuring tool movable block (130) moving along the length direction, the measuring tool fixed block (120) comprises an upper fixed block located above the measuring scale (110) and a lower fixed block located below the measuring scale (110), the measuring tool movable block (130) comprises an upper movable block located above the measuring scale (110) and a lower movable block located below the measuring scale (110), the opposite inner sides of the upper fixed block and the upper movable block are respectively provided with a female end thread taper calibration surface (140) and a female end sealing surface calibration surface (150) from bottom to top, and the opposite outer sides of the lower fixed block and the lower movable block are respectively provided with a male end thread taper calibration surface (160) and a male end sealing surface calibration surface (170) from top to bottom.

2. An adjustable thread alignment gauge as claimed in claim 1 wherein, The measuring scale (110) is horizontally arranged, the measuring tool fixed block (120) is vertically fixed to one end of the measuring scale (110), and the measuring tool movable block (130) is vertically arranged and transversely slides on the measuring scale (110).

3. An adjustable thread alignment gauge as claimed in claim 2, wherein, The measuring tool fixed block (120) is integrally formed at one end of the measuring scale (110).

4. An adjustable thread alignment gauge as claimed in claim 3 wherein, A through hole is formed in one side of the middle part of the measuring tool movable block (130), the through hole is sleeved on the measuring scale (110) and slides along the length direction of the measuring scale (110).

5. An adjustable thread alignment gauge as claimed in claim 4, wherein, One side of the through hole is provided with a notch (180), and the width of the notch (180) is smaller than the width of the measuring scale (110).

6. An adjustable thread alignment gauge as claimed in claim 5 wherein, The lower side of the front end surface of the measuring scale (110) is provided with a main scale along the length direction, and the lower side of the notch (180) is provided with an auxiliary scale.

7. An adjustable thread alignment gauge as claimed in claim 5 wherein, The upper side of the front end surface of the measuring scale (110) is provided with a main scale along the length direction, and the upper side of the notch (180) is provided with an auxiliary scale.

8. An adjustable thread alignment gauge as defined in claim 1, wherein, The measuring tool body (100) is made of metal material.

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