A double sealing surface diameter measuring instrument and measuring method for special buckle of petroleum pipe

Abstract

The invention discloses a double sealing surface diameter measuring instrument for a special buckle of a petroleum pipe and a measuring method. A measuring probe mechanism, a moving probe mechanism and a fixed contact are arranged on a measuring body; the fixed contact is fixed to the lower right corner of the measuring body, and the moving contact on the moving probe mechanism is fixed to the lower left corner of the measuring body through a connecting block, so that the fixed contact and the moving contact form two supporting sliding components that can move relatively, an indicator gauge is fixed to the upper end of the measuring body to form a measuring structure that can slide relatively, and the indicator gauge fixed to the upper end of the measuring body can be used to measure the sealing surface diameter of the special buckle of the double sealing surface in an annular manner, and the two fixed contacts and the moving contacts that can slide relatively are used as a supporting structure, so that the indicator gauge is effectively prevented from being tilted by force during the measurement process. The device has a simple structure and a fast measuring speed, and can batch measure the sealing surface diameters of multiple special buckles of the double sealing surface in one calibration, and has a high measuring efficiency.

Description

Technical Field

[0001] The invention belongs to a special buckle double sealing surface size measuring device, and in particular relates to a special buckle double sealing surface diameter measuring instrument and a measuring method for a petroleum pipe. Background Art

[0002] Most of my country's oil resources are distributed in very complex and harsh geographical environments such as oceans, deserts, mountains, plateaus, and swamps. Under such an environment, my country's oil extraction is becoming more and more difficult, and the service conditions of oil pipes are becoming more and more severe. This puts higher requirements on the connection firmness of oil pipes. Therefore, this special special buckle with seal and thread came into being. With the increasing use of this special buckle, researchers found that once the thread of the special buckle currently used on the market is locked, the sealing surface will be damaged and the sealing effect will be greatly reduced. In order to make the sealing effect better, a special buckle with double sealing surfaces has appeared. At present, the qualified inspection of this special buckle with double sealing surfaces can only be installed on the equipment for testing. There is currently no corresponding special buckle size measuring device for double sealing surfaces, and the qualified rate of each special buckle with double sealing surfaces cannot be ensured. Summary of the invention

[0003] The purpose of the present invention is to provide a double sealing surface diameter measuring instrument and measuring method for a special buckle of a petroleum pipe, so as to overcome the inability of the prior art to accurately measure the inner sealing surface size of a special buckle with double sealing surfaces. The present application can accurately measure the inner sealing surface size of a special buckle with double sealing surfaces, thereby ensuring the accuracy of the measurement results.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme:

[0005] A diameter measuring instrument for double sealing surfaces of special buckles of petroleum pipes, comprising a measuring body, a measuring probe mechanism, a moving probe mechanism and a fixed contact arranged on the measuring body;

[0006] The fixed contact is fixed to the lower right corner of the measuring body;

[0007] The movable probe mechanism includes a movable contact and a connecting block. The movable contact is fixed to the lower left corner of the measuring body through the connecting block. The connecting block is fixed to the lower end of the measuring body through a self-resetting sliding mechanism. The sliding direction of the connecting block driven by the self-resetting sliding mechanism is in a straight line with the connecting line of the movable contact and the fixed contact.

[0008] The measuring probe mechanism comprises an indicator fixed to the upper end of the measuring body, the measuring head of the indicator is connected with a measuring contact through a movable probe seat, and the measuring contact is located outside the measuring body.

[0009] Furthermore, a fixing groove is provided at the upper end of the measuring body, the fixing base is fixed in the fixing groove by screws, and the indicating meter is fixed to the upper end of the fixing base by tightening screws.

[0010] Furthermore, it also includes a meter cover arranged on the measuring body, the meter cover is provided with a through hole, the indicator meter display part passes through the through hole, and the meter cover is fixed to the upper end of the measuring body by screws.

[0011] Furthermore, the measuring contact, the moving contact and the fixed contact are in the same plane, and the measuring contact is at the upper end of the moving contact.

[0012] Furthermore, one end of the movable probe base is connected to the measuring contact through a thread, and the other end of the movable probe base is fixedly connected to the measuring head of the indicator through a screw.

[0013] Furthermore, the self-resetting sliding mechanism includes a linear bearing seat and a limit fixing seat fixed to the lower end of the measuring body, the linear bearing seat is provided with a linear bearing, the linear bearing is fixedly connected to the connecting block, the limit fixing seat is provided with a push rod groove, the push rod groove is provided with a spring and a push rod that can slide along the push rod groove, one end of the spring is in contact with the inner end of the push rod groove, and the other end is in contact with one end of the push rod; the other end of the push rod is in contact with one end of the linear bearing.

[0014] Furthermore, a limit screw for limiting the linear bearing is provided at the lower end of the measuring body, and the limit screw is located at the other end of the linear bearing.

[0015] Furthermore, one side of the movable probe seat can contact the other end of the linear bearing.

[0016] Furthermore, the fixed contact is fixed to the lower end of the main body through a fixed probe seat, and the fixed probe seat is fixed to the lower end of the main body through screws.

[0017] A method for measuring the diameter of double sealing surfaces of a special buckle of a petroleum pipe comprises the following steps:

[0018] Step 1) Use a calibration mold to calibrate and zero the indicator so that when the indicator is at zero, the distance between the fixed contact and the measuring contact is the standard diameter to be measured;

[0019] Step 2) Place the calibrated and zeroed device on the sealing surface of the double sealing surface special buckle to be tested, use the fixed contact as the fixed point to contact one side of the sealing surface of the double sealing surface special buckle to be tested, use the measuring contact as the moving point to make an arc swing, and record the data displayed on the indicator meter. The inflection point position on the indicator meter is the actual deviation value of the sealing surface of the special buckle to be tested.

[0020] Compared with the prior art, the present invention has the following beneficial technical effects:

[0021] The present invention discloses a double sealing surface diameter measuring instrument for special buckles of petroleum pipes. The measuring probe mechanism, the movable probe mechanism and the fixed contact are arranged on the measuring body. The fixed contact is fixed to the lower right corner of the measuring body. The movable contact on the movable probe mechanism is fixed to the lower left corner of the measuring body through a connecting block. The connecting block is fixed to the lower end of the measuring body through a self-resetting sliding mechanism. The sliding direction of the connecting block driven by the self-resetting sliding mechanism is in a straight line with the connecting line of the movable contact and the fixed contact, so that the fixed contact and the movable contact form two supporting sliding components that can move relative to each other. Then, the movable probe seat is used to move the movable contact to the measuring body. The measuring contact is connected to the measuring head of the indicator gauge, and the indicator gauge is fixed to the upper end of the measuring body to form a measuring structure that can slide relatively. The indicator gauge fixed to the upper end of the measuring body can be used to measure the diameter of the special buckle sealing surface of the double sealing surface in an annular manner. Two fixed contacts and a moving contact that can slide relatively to each other serve as a supporting structure, which can effectively prevent the indicator gauge from being tilted by force during the measurement process, and can ensure that the fixed contact and the moving contact are slidably supported in the same horizontal plane during the measurement process. The device has a simple structure and a fast measuring speed. It can batch measure the diameters of multiple special buckle sealing surfaces of the double sealing surfaces in one calibration, and has a high measurement efficiency.

[0022] Furthermore, a fixing groove is provided at the upper end of the measuring body, the fixing base is fixed in the fixing groove by screws, and the indicating meter is fixed to the upper end of the fixing base by tightening screws, which is convenient for installation and maintenance.

[0023] Furthermore, the measuring contact, the moving contact and the fixed contact are in a straight line to ensure that the measuring contact has the largest measuring diameter during the measuring process of the measuring body, thereby ensuring accurate measurement results.

[0024] Furthermore, one end of the movable probe seat is connected to the measuring contact through a thread, and the other end of the movable probe seat is fixedly connected to the measuring head of the indicator through a screw, which is convenient for replacing the measuring contact and is suitable for surfaces to be measured of different sizes.

[0025] Furthermore, the self-resetting sliding mechanism includes a linear bearing seat and a limit fixing seat fixed to the lower end of the measuring body, a linear bearing is arranged on the linear bearing seat, the linear bearing is fixedly connected to the connecting block, a push rod groove is provided on the limit fixing seat, a spring and a push rod that can slide along the push rod groove are provided in the push rod groove, one end of the spring contacts with the inner end of the push rod groove, and the other end contacts with one end of the push rod; the other end of the push rod contacts with one end of the linear bearing, and the push rod spring structure is utilized to ensure that both ends of the moving contact and the fixed contact can contact with the special buckle sealing surface of the double sealing surface.

[0026] The invention discloses a method for measuring the diameter of double sealing surfaces of special buckles of petroleum pipes. The method comprises the following steps: firstly, a calibration mold is used to calibrate and zero an indicator gauge, so that when the indicator gauge is at zero position, the distance between a fixed contact and a measuring contact is the standard diameter to be measured; then, the device after calibration and zero adjustment is placed on the sealing surface of the special buckle of double sealing surfaces to be measured, the fixed contact is used as a fixed point to contact one side of the sealing surface of the special buckle of double sealing surfaces to be measured, the measuring contact is used as a moving point to make an arc swing, the data displayed on the indicator gauge is recorded, and the inflection point on the indicator gauge is observed. The position of the inflection point on the indicator gauge is the actual deviation value of the sealing surface of the special buckle to be measured, the measurement result is accurate, and the measurement speed is fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention.

[0028] Figure 2 It is a top view of the present invention.

[0029] Figure 3 This is a cross-sectional view of the fixed probe base of the present invention.

[0030] Figure 4 It is a schematic diagram of the measurement structure of the present invention.

[0031] Among them, 1. Measuring body; 2. Fixed probe seat; 3. Fixed contact; 4. Indicator; 5. Table cover; 6. Handle; 7. Movable probe seat; 8. Measuring contact; 9. Fixed base; 10. Fastening screw; 11. Special buckle of double sealing surface to be measured; 12. Moving contact; 13. Limit screw; 14. Connecting block; 15. Linear bearing; 16. Push rod; 17. Spring; 18. Linear bearing seat; 19. Limit fixing seat. DETAILED DESCRIPTION

[0032] The present invention is further described in detail below in conjunction with the accompanying drawings:

[0033] like Figure 1-Figure 4 As shown, a diameter measuring instrument for double sealing surfaces of special buckles of petroleum pipes comprises a measuring body 1 and a measuring probe mechanism, a moving probe mechanism and a fixed contact 3 arranged on the measuring body 1;

[0034] The fixed contact 3 is fixed to the lower right corner of the measuring body 1; the movable probe mechanism includes a movable contact 12 and a connecting block 14, the movable contact 12 is fixed to the lower left corner of the measuring body 1 through the connecting block 14, the connecting block 14 is fixed to the lower end of the measuring body 1 through a self-resetting sliding mechanism, and the sliding direction of the connecting block 14 driven by the self-resetting sliding mechanism is in a straight line with the connecting line of the movable contact 12 and the fixed contact 3;

[0035] The measuring probe mechanism comprises an indicator 4 fixed to the upper end of the measuring body 1 . The measuring head of the indicator 4 is connected to a measuring contact 8 via a movable probe seat 7 . The measuring contact 8 is located outside the measuring body 1 .

[0036] A fixing groove is provided at the upper end of the measuring body 1, a fixing base 9 is fixed in the fixing groove by screws, and an indicator 4 is fixed to the upper end of the fixing base 9 by fastening screws 10; it also includes a handle 6 and a meter cover 5 arranged on the measuring body 1, a through hole is provided on the meter cover 5, and a display part of the indicator 4 passes through the through hole; the meter cover 5 is fixed to the upper end of the measuring body 1 by screws; the handle 6 is fixedly connected to the movable probe base 7.

[0037] Specifically, the measuring contact 8 is in the same plane as the moving contact 12 and the fixed contact 3 , and the measuring contact 8 is at the upper end of the moving contact 14 , so as to ensure that the measuring contact 8 measures the diameter deviation value during the measuring process of the measuring body 1 .

[0038] Specifically, one end of the movable probe base 7 is connected to the measuring contact 8 via a thread, and the other end of the movable probe base 7 is fixedly connected to the measuring head of the indicator 4 via a screw.

[0039] The self-resetting sliding mechanism includes a linear bearing seat 18 fixed to the lower end of the measuring body 1 and a limit fixing seat 19, a linear bearing 15 is arranged on the linear bearing seat, the linear bearing 15 is fixedly connected to the connecting block 14, a push rod groove is arranged on the limit fixing seat 19, a spring 17 and a push rod 16 that can slide along the push rod groove are arranged in the push rod groove, one end of the spring 17 contacts with the inner end of the push rod groove, and the other end contacts with one end of the push rod 16; the other end of the push rod 16 contacts with one end of the linear bearing 15; during the measurement process, the push rod 16 is always in contact with one end of the linear bearing 15 under the action of the spring 17;

[0040] A limit screw 13 for limiting the position of the linear bearing 15 is provided at the lower end of the measuring body 1, and the limit screw 13 is located at the other end of the linear bearing 15;

[0041] During use, one side of the movable probe base 7 can contact the other end of the linear bearing 15 .

[0042] The fixed contact 3 is fixed to the lower end of the main body 1 through the fixed probe holder 2. Fixed contacts with different contact diameters can be replaced according to the different specifications of the special buckle double sealing surface. The fixed probe holder 2 is fixed to the lower end of the main body 1 through screws.

[0043] A method for measuring the inner sealing surface diameter of a double sealing surface special buckle comprises the following steps:

[0044] Step 1), use the calibration mold to calibrate and zero the indicator 4, adjust the indicator to zero, and the distance between the fixed contact 3 and the measuring contact 8 is the standard diameter to be measured;

[0045] Step 2), place the calibrated and zeroed device on the sealing surface of the special buckle 11 with double sealing surfaces to be tested, use the fixed contact 3 as the fixed point to contact one side of the sealing surface of the special buckle with double sealing surfaces to be tested, use the measuring contact 8 as the moving point to make an arc swing, and record the data displayed on the indicator table 4. The inflection point position on the indicator table is the actual deviation value of the sealing surface of the special buckle to be tested, that is, the maximum display value or the minimum display value on the indicator table 4 is the actual deviation value of the sealing surface of the special buckle with double sealing surfaces to be tested.

[0046] In step 1), the specific process is as follows: the movable probe seat 7 and the measuring contact 8 are driven by the handle 6 to move to the right along with the measuring rod of the indicator 4. In the process of moving to the right, the movable probe seat 7 contacts the end face of the linear bearing 15 and drives the bearing 15 to move to the right. The connecting block 14 and the movable contact 12 move to the right at the same time. The linear bearing 15 drives the push rod 16 to move to the right as well, and the spring 17 in the limit fixing seat is compressed; the fixed probe 3 is tightly fitted with the sealing surface of the right end of the calibration mold, and then the pull ring 6 is released by hand. , use the compression force of the indicator gauge 4 and the spring 17 to move both the measuring probe mechanism and the moving probe mechanism to the left, then the moving contact 12 and the left end sealing surface of the calibration probe are tightly fitted, and the measuring contact 8 and the measuring surface are tightly fitted, and then with the fixed probe 3 as the fixed point, the measuring instrument is made to make a slight circular swing motion. At this time, an inflection point (i.e., the maximum value point or the minimum value point) will appear on the indicator gauge 4, unscrew the screw next to the dial of the indicator gauge 4, rotate the dial to make the scale 0 on the indicator gauge 4 coincide with the inflection point, and the calibration is completed.

[0047] Alternatively, a standard limit width slot is used to limit the fixed contact 3 and the measuring contact 8 to the standard width value to be measured, and then the indicator 4 is zeroed to complete the calibration of the indicator 4.

[0048] In step 2), the measuring probe mechanism and the movable probe mechanism are compressed by driving the movable probe seat 7 and the measuring contact 8 through the handle 6, and then the fixed probe 3 and one side sealing surface of the special buckle with double sealing surfaces to be measured are tightly fitted, and then the pull ring 6 is released by hand, and a circular arc swing is made with the fixed probe 3 as the fixed point and the measuring contact 8 as the moving point. An inflection point (i.e., the maximum value point or the minimum value point) will appear on the indicator 4. The data is read, which is the actual deviation value of the sealing surface of the special buckle with double sealing surfaces to be measured.

Claims

1. A double sealing surface diameter measuring instrument for special buckles of petroleum pipes, characterized in that: It comprises a measuring body (1), and a measuring probe mechanism, a movable probe mechanism and a fixed contact (3) arranged on the measuring body (1); The fixed contact (3) is fixed to the lower right corner of the measuring body (1); The movable probe mechanism comprises a movable contact (12) and a connecting block (14); the movable contact (12) is fixed to the lower left corner of the measuring body (1) via the connecting block (14); the connecting block (14) is fixed to the lower end of the measuring body (1) via a self-resetting sliding mechanism; the sliding direction of the connecting block (14) driven by the self-resetting sliding mechanism is on a straight line with a line connecting the movable contact (12) and the fixed contact (3); The measuring probe mechanism comprises an indicator (4) fixed to the upper end of a measuring body (1); the measuring head of the indicator (4) is connected to a measuring contact (8) via a movable probe seat (7); and the measuring contact (8) is located outside the measuring body (1).

2. The oil pipe special buckle double sealing surface diameter measuring instrument according to claim 1 is characterized in that: The upper end of the measuring body (1) is provided with a fixing groove, the fixing base (9) is fixed in the fixing groove by means of screws, and the indicating meter (4) is fixed to the upper end of the fixing base (9) by means of tightening screws (10).

3. The oil pipe special buckle double sealing surface diameter measuring instrument according to claim 1 is characterized in that: It also includes a meter cover (5) arranged on the measuring body (1), the meter cover (5) is provided with a through hole, the display part of the indicator meter (4) passes through the through hole, and the meter cover (5) is fixed to the upper end of the measuring body (1) by screws.

4. The oil pipe special buckle double sealing surface diameter measuring instrument according to claim 1 is characterized in that: The measuring contact (8), the moving contact (12) and the fixed contact (3) are in the same plane.

5. The oil pipe special buckle double sealing surface diameter measuring instrument according to claim 4 is characterized in that: One end of the movable probe seat (7) is connected to the measuring contact (8) via a thread, and the other end of the movable probe seat (7) is fixedly connected to the measuring head of the indicator (4) via a screw.

6. The oil pipe special buckle double sealing surface diameter measuring instrument according to claim 1 is characterized in that: The self-resetting sliding mechanism comprises a linear bearing seat (18) fixed to the lower end of the measuring body (1) and a position limiting fixed seat (19); a linear bearing (15) is arranged on the linear bearing seat (18); the linear bearing (15) is fixedly connected to the connecting block (14); a push rod groove is arranged on the position limiting fixed seat (19); a spring (17) and a push rod (16) capable of sliding along the push rod groove are arranged in the push rod groove; one end of the spring (17) contacts the inner end of the push rod groove, and the other end contacts one end of the push rod (16); the other end of the push rod (16) contacts one end of the linear bearing (15).

7. The oil pipe special buckle double sealing surface diameter measuring instrument according to claim 6 is characterized in that: A limiting screw (13) for limiting the position of the linear bearing (15) is provided at the lower end of the measuring body (1), and the limiting screw (13) is located at the other end of the linear bearing (15).

8. The oil pipe special buckle double sealing surface diameter measuring instrument according to claim 1 is characterized in that: One side of the movable probe seat (7) can contact the other end of the linear bearing (15).

9. The oil pipe special buckle double sealing surface diameter measuring instrument according to claim 1 is characterized in that: The fixed contact (3) is fixed to the lower end of the main body (1) via a fixed probe base (2), and the fixed probe base (2) is fixed to the lower end of the main body (1) via screws.

10. A method for measuring the sealing surface diameter of a special buckle with double sealing surfaces based on the oil pipe special buckle double sealing surface diameter measuring instrument according to claim 1, characterized in that: The following steps are involved: Step 1), using a calibration mold to calibrate and zero the indicator (4), the distance between the fixed contact (3) and the measuring contact (8) is the standard diameter to be measured; Step 2), place the calibrated and zeroed device on the sealing surface of the double sealing surface special buckle to be tested, use the fixed contact (3) as a fixed point to contact one side of the sealing surface of the double sealing surface special buckle to be tested, use the measuring contact (8) as a moving point to make an arc swing, record the data displayed on the indicator (4), and the inflection point position on the indicator (4) is the actual deviation value of the sealing surface of the special buckle to be tested.

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