CN114608406A - Measurement and correction device and method for sealing groove of wellhead Christmas tree equipment - Google Patents
Measurement and correction device and method for sealing groove of wellhead Christmas tree equipment Download PDFInfo
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- CN114608406A CN114608406A CN202210508785.8A CN202210508785A CN114608406A CN 114608406 A CN114608406 A CN 114608406A CN 202210508785 A CN202210508785 A CN 202210508785A CN 114608406 A CN114608406 A CN 114608406A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/0002—Arrangements for supporting, fixing or guiding the measuring instrument or the object to be measured
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Abstract
A measurement and correction device and method for a sealing groove of wellhead Christmas tree equipment relate to the technical field of detection devices and are used for solving the problems that when precision inspection is carried out on the sealing groove on a pressure container, a large number of correction discs need to be processed due to the fact that the size of the sealing groove is large, and the large number of correction discs are inconvenient to carry. Including measuring the arm, have the multiunit alignment straight flute on measuring the outer wall of arm, two alignment straight flute parallel arrangement that set up in groups, the different groups the cross section size of alignment straight flute or/and the interval between the alignment straight flute is different, and is a set of the alignment straight flute corresponds the seal groove of a specification. According to the invention, a plurality of groups of calibration straight grooves are arranged on the measuring arm, so that the requirements for detecting sealing grooves with different sizes can be met; compared with the mode that each calibration disc is provided with a group of calibration ring grooves in the prior art, the invention has the advantages of greatly reduced weight, high precision, basically no abrasion and convenient carrying and storage; compared with the check by using a calibration ring groove, the check is easier to observe and compare.
Description
Technical Field
The invention relates to the technical field of detection devices, in particular to a device and a method for measuring and calibrating a sealing groove of wellhead Christmas tree equipment.
Background
In recent years, although China's offshore oil and gas drilling well completion equipment industry achieves some achievements through technical introduction, cooperation, digestion, absorption, re-innovation and localization, the technology has a larger gap compared with developed countries and industry leading enterprises with nearly hundred years of development history. Valves, pipe joints or pipe fittings on various pressure vessel equipment such as petroleum or chemical engineering and the like are common parts, and the joints of the valves and the pipe fittings and the joints of the pipe joints are required to ensure the tightness. For example, the sealing between the Christmas tree and the pipeline is realized by additionally arranging a sealing gasket in the sealing groove. As shown in fig. 1, a conventional oil pipe cross 1 of a christmas tree has four seal grooves 11, and in the tightness test, the seal grooves (generally, ring grooves) need to be tested for machining accuracy. In the prior art, the seal groove is generally inspected by a comparative measurement method, and the inspection mode is to use a length measuring instrument for calibration or a machining calibration disc as a comparative measurement reference. The length measuring instrument has high equipment cost, slow calibration and low efficiency. When a user disagrees with the measurement result on site, the user cannot carry the length measuring instrument at any time, so that the accuracy of the measurement result cannot be judged in time. If the calibration disk is used, because the specifications of the sealing groove and the sealing gasket are numerous (21 are commonly used), more calibration disks need to be machined (a calibration ring groove with the same size as the sealing groove is machined on the calibration disk). As shown in fig. 2 and 3, the proof reading tray 2 has a heavy weight, a large-sized proof reading tray having a weight of 100 kg and a small-sized proof reading tray having a weight of approximately 20 kg, and is inconvenient to use, carry and store. The calibration disc 2 is provided with a calibration ring groove 21, and the requirement on the machining precision of the calibration ring groove 21 is high.
Disclosure of Invention
The invention aims to provide a device and a method for measuring and calibrating a sealing groove of wellhead Christmas tree equipment, which are used for solving the problems that a large number of calibration discs need to be processed due to the large size of the sealing groove and the large number of calibration discs are inconvenient to carry when the precision of the sealing groove on a pressure container is tested.
The technical scheme adopted by the invention for solving the technical problems is as follows: the utility model provides a well head production tree equipment seal groove measures calibrating device, includes the measuring arm, have the multiunit on the outer wall of measuring arm and proofread the straight flute, two proofread straight flute parallel arrangement that set up in groups, different groups the cross section size of proofread straight flute or/and the interval between the proofread straight flute is different, and is a set of the proofread straight flute corresponds the seal groove of a specification.
Furthermore, a telescopic arm is arranged on the measuring arm, the telescopic arm is movably connected with the measuring arm, and a positioning mechanism is arranged between the telescopic arm and the measuring arm;
two calibration straight grooves which are arranged in a group, wherein one calibration straight groove is positioned on the measuring arm, and the other calibration straight groove is positioned on the telescopic arm; or the calibration straight grooves of the same group are all positioned on the measuring arm.
Furthermore, the telescopic arm is connected with the measuring arm in a sliding mode, and the sliding track of the telescopic arm is a straight line; the positioning mechanism comprises a fixed cylinder fixed on the side wall of the telescopic arm, a positioning pin arranged in the fixed cylinder in a sliding manner, and a spring positioned between the positioning pin and the fixed cylinder, wherein the action end of the positioning pin is inserted into a positioning hole in the outer wall of the measuring arm under the action of the spring; the outer wall of the measuring arm is provided with a plurality of positioning holes.
Furthermore, the side wall of the measuring arm is provided with a jackscrew, the telescopic arm is provided with a sliding rod which is in sliding connection with the measuring arm, and the jackscrew is screwed to fix the telescopic arm after the jackscrew and the sliding rod are tightly jacked.
Further, flexible arm rotates with the measuring arm to be connected, positioning mechanism includes rotates the locating piece of being connected with the measuring arm, the constant head tank has in the lateral wall of flexible arm, the rotation plane of locating piece intersects with the rotation plane of flexible arm, the locating piece stretches into back flexible arm and measuring arm relatively fixed in the constant head tank.
Furthermore, the measuring arm is of a cross-shaped structure, the measuring arm is provided with four measuring ends, and each measuring end is provided with a plurality of groups of calibration straight grooves.
Further, the measuring arms are provided with two measuring arms, and a length adjusting unit is arranged between the two measuring arms.
Further, the length adjustment unit includes movable rod and positioning mechanism, the one end and the measuring arm fixed connection of movable rod, the other end and the flexible arm sliding connection of movable rod, positioning mechanism sets up the relative fixation between realization movable rod and the flexible arm between movable rod and the flexible arm.
Further, positioning mechanism include with flexible arm outer wall rotates a plurality of holding rings of being connected, the holding ring is C type structure, a terminal surface of holding ring has the inserted bar, the movable rod outer wall has the shifting block, flexible arm is stretched out to the shifting block, the shifting block lateral wall has the jack of pegging graft the complex with the inserted bar.
A measurement and correction method for a sealing groove of wellhead Christmas tree equipment comprises the following steps:
(1) selecting a calibration straight slot group with corresponding size according to the size of the sealing slot;
(2) attaching the bottom surface of the measuring device to the end surface of the calibrating device, which is provided with the calibrating straight groove, and attaching the side surface of the measuring device to the side surface of the calibrating device; and placing a fixed side head in the measuring device in one of the calibration straight slots in the calibration straight slot group, placing a movable side head in the other calibration straight slot, enabling the fixed side head and the movable side head to be in contact with the side faces of the corresponding calibration straight slots, adjusting the zero point of the measuring device, and completing calibration.
The beneficial effects of the invention are: the device and the method for measuring and calibrating the sealing groove of the wellhead Christmas tree equipment have the following advantages:
(1) according to the invention, a plurality of groups of calibration straight grooves are arranged on the measuring arm, the cross section sizes of different groups of calibration straight grooves or/and the distance between two calibration straight grooves of the calibration straight groove groups are different, so that the requirements for testing sealing grooves with different sizes can be met;
(2) compared with the mode that a group of calibration ring grooves are arranged on each calibration disc in the prior art, the invention greatly reduces the weight and is convenient to carry and store;
(3) the invention carries out calibration on the measuring device through the calibration straight groove, and is easier to operate compared with the method for carrying out inspection by using the calibration ring groove.
Drawings
FIG. 1 is a cross-sectional view of a prior art oil tube cross-piece;
FIG. 2 is a cross-sectional view of a prior art collation disc;
FIG. 3 is an axial schematic view of a prior art proof disk:
FIG. 4 is a front view of a first embodiment of the proofing apparatus according to the invention;
FIG. 5 is a top view of a first embodiment of the calibration device of the present invention;
FIG. 6 is a front view of a second embodiment of the proofing apparatus according to the invention;
FIG. 7 is a schematic view of the second embodiment of the calibration device of the present invention after the telescopic arm is extended;
FIG. 8 is a front view of the positioning mechanism of FIG. 7;
FIG. 9 is a cross-sectional view of the positioning mechanism of FIG. 7;
FIG. 10 is a top view of the measuring arm of FIG. 7;
FIG. 11 is a front view of a third embodiment of the proofing apparatus according to the invention;
FIG. 12 is a schematic view of a third embodiment of the calibration device of the present invention after the telescopic arm is extended;
FIG. 13 is a top view of the measuring arm of FIG. 11;
FIG. 14 is a front view of a fourth embodiment of the collation apparatus of the present invention;
FIG. 15 is a schematic view of a fourth embodiment of the calibration device of the present invention after the telescopic arm is extended;
FIG. 16 is an enlarged view of a portion of FIG. 14;
FIG. 17 is a schematic view of the positioning mechanism of FIG. 16;
FIG. 18 is a second schematic view of the calibration device according to the fourth embodiment of the present invention after the telescopic arm is extended;
FIG. 19 is a front view of a fifth embodiment of the collation apparatus of the present invention;
FIG. 20 is a side view of a fifth embodiment of the collation apparatus according to the present invention;
FIG. 21 is a front view of a sixth embodiment of the collation apparatus of the present invention;
FIG. 22 is a top view of a sixth embodiment of the collation apparatus of the present invention;
FIG. 23 is an axial schematic view of the retaining ring of FIG. 22;
FIG. 24 is a schematic view of the telescoping arm and positioning ring assembly of FIG. 22;
in the figure: 1 oil pipe four-way joint, 11 sealing grooves, 2 calibration discs, 21 calibration ring grooves, 3 measuring arms, 30 rectangular notches, 31 calibration straight grooves, 32 telescopic arms, 321 sliding rods, 322 positioning grooves, 33 grooves, 34 marks, 35 positioning holes, 36 sliding grooves, 37 fixing shafts, 38 hollow structures, 39 finger grooves, 4 jackscrews, 5 fixing cylinders, 51 spring grooves, 52 positioning pins, 53 handles, 54 long holes, 55 springs, 6 positioning blocks, 61 lug plates, 62 planes, 7 movable rods, 71 positioning rings, 72 long grooves, 73 inserted rods and 74 shifting blocks.
Detailed Description
As shown in fig. 1, four interface positions of a common oil pipe four-way joint 1 are respectively provided with a sealing groove 11, and the inner wall of the sealing groove 11 is a conical surface. As shown in fig. 2 and 3, in the calibration disk 2 of the prior art, a calibration ring groove 21 is machined on the end face of the calibration disk 2, the measuring device is calibrated by the calibration ring groove 21 on the calibration disk 2, and then the machining accuracy of the seal groove 11 is checked by the measuring device.
As shown in fig. 4 to 24, the calibration device of the present invention includes a measuring arm 3, the measuring arm 3 has a plurality of calibration straight slots 31, on one hand, the measuring arm 3 has a smaller size relative to the calibration disk, and thus the overall weight is greatly reduced; on the other hand, the measuring arm is provided with a plurality of groups of calibration straight grooves 31, which can meet the requirements for testing sealing grooves with different sizes, and the calibration device of the present invention is described in detail below with reference to different embodiments.
The first embodiment is as follows:
as shown in fig. 4 and 5, the measuring arm 3 has a rectangular parallelepiped shape, and may have a solid structure or a hollow structure. A plurality of groups of calibration straight grooves 31 are processed on two opposite side surfaces of the measuring arm 3, two calibration straight grooves in the same group are a calibration straight groove group, and the cross sections of the calibration straight grooves 31 in different groups have different sizes or/and the distance between the two calibration straight grooves in the same group is different. Therefore, a plurality of calibration straight slot groups on the side surface of the measuring arm 3 correspond to a plurality of sealing slots, and the calibration straight slot groups correspond to the sealing slots one to one and are used for calibrating the sealing slots with different specifications and sizes during inspection. Since the machining of the calibration straight grooves is easy, a calibration straight groove group with higher precision can be obtained. The same measuring arm 3 can be used for detecting various sealing grooves of different types, so that the number of the calibrating devices is reduced, and the device is convenient to carry, store and use.
The second embodiment:
as shown in fig. 6 and 7, the measuring arm 3 has a telescopic arm 32, one end of the measuring arm 3 has two rectangular notches 30, as shown in fig. 10, two parallel sliding grooves 36 are provided on the outer wall of the measuring arm 3 corresponding to the rectangular notches 30, and a plurality of positioning holes 35 are provided on the measuring arm 3 between the two sliding grooves 36. As shown in fig. 7, the telescopic arm 32 is also rectangular, a sliding rod 321 is fixed on the side wall of the telescopic arm 32, and the sliding rod 321 extends into the corresponding sliding slot 36 to realize the sliding connection between the telescopic arm 32 and the measuring arm 3. And two alignment straight grooves 31 are arranged in the same group, wherein one alignment straight groove 31 is positioned at the other end of the measuring arm 3, and the other alignment straight groove 31 is positioned on the side surface of the telescopic arm 32. The side of the telescopic arm 32 where the straight calibration slot 31 is machined is flush with the side of the measuring arm 3 where the straight calibration slot 31 is machined. One of the calibration straight grooves 31 forming the calibration straight groove group is positioned on the measuring arm 3, the other calibration straight groove 31 is positioned on the telescopic arm 32, and the telescopic arm 32 is in sliding connection with the measuring arm 3, so that the distance between the two calibration straight grooves 31 of the calibration straight groove group can be adjusted, and the calibration requirements of different sizes of sealing grooves during inspection can be further met. The side wall of the measuring arm 3 is provided with marks 34 corresponding to the positioning holes 35 one by one, the marks 34 are provided with size marks, the side wall of the telescopic arm 32 is provided with a positioning mechanism, and the positioning mechanism is used for realizing the relative fixation of the telescopic arm 32 and the measuring arm 3.
As shown in fig. 8 and 9, the positioning mechanism includes a positioning cylinder 5, a positioning pin 52 slidably disposed in a spring cavity 51 in the positioning cylinder 5, a spring 55 disposed between the positioning pin 52 and the sealing end of the positioning cylinder 5, and a handle 53 fixed to a sidewall of the positioning pin 52, wherein a long hole 54 is formed in the sidewall of the positioning cylinder 5, and one end of the handle 53 extends out of the positioning cylinder 5 after passing through the long hole 54. Under the action of the spring 55, the positioning pin 52 penetrates out of the open end of the positioning cylinder 5, and after the positioning pin 52 extends into the positioning hole 35, the telescopic arm 32 and the measuring arm 3 are relatively fixed in the sliding direction of the telescopic arm 32. At this time, the distance between two calibration straight grooves forming the calibration straight groove group is determined and corresponds to a sealing groove with one specification size. The handle is pulled to separate the positioning pin 52 from the positioning hole 35, then the telescopic arm 32 is slid again, when the positioning pin reaches the mark 34 at another position, the handle 53 is released to make the positioning pin 52 extend into the positioning hole 35 corresponding to the mark 34, at this time, the telescopic arm 32 and the measuring arm 3 are relatively fixed again, and at this time, the distance between the two alignment straight grooves 31 forming the alignment straight groove group is adjusted. Accordingly, the dimensional indicia at 34 represent the seal groove dimensions that can be verified. For example, when two adjacent marks 34 are provided, one mark 34 is provided with a dimension mark R39, the other mark 34 is provided with a dimension mark R45, and the positioning pin 52 is inserted into the positioning hole 35 corresponding to the dimension mark R39, the group of the calibration straight slots can be used for inspecting the sealing slot with the radius of 39 mm; when the positioning pin 52 is inserted into the positioning hole 35 corresponding to the size indicator R45, the group of the calibration straight grooves can be used for inspecting a sealing groove with a radius of 45 mm.
In the non-use state, the telescopic arm 32 should be completely placed in the rectangular notch 30. In order to hide the positioning mechanism, a groove 33 is formed in the middle of the measuring arm 3, and the positioning mechanism extends into the groove after the side wall of the telescopic arm 32 provided with the positioning mechanism is contacted with the middle of the measuring arm 3. At this time, in order to realize the relative fixation between the telescopic arm 32 and the measuring arm 3, as shown in fig. 6, a jack screw 4 is provided on the side wall of the measuring arm 3, and the jack screw is pressed against the slide rod when the jack screw 4 is screwed.
Example three:
in order to expand the range of the checking dimension, as shown in fig. 11 and 12, two rectangular notches 30 are respectively provided at both ends of the measuring arm 3, and as shown in fig. 13, a sliding groove 36 and a positioning hole 35 are provided at the outer wall of the measuring arm 3 corresponding to each rectangular notch 30. In comparison with the second embodiment, the third embodiment has four telescopic arms 32, the four telescopic arms 32 are divided into two groups, and the sliding tracks of the two telescopic arms 32 in the same group are overlapped. As shown in fig. 12, the positions of the two telescopic arms 32 and the measuring arm 3 in the group can be adjusted simultaneously, so that the distance between the two calibration straight slots 31 of the calibration straight slot group is larger, and the requirement for checking a larger-sized sealing slot is met. Compared with the second embodiment, under the measuring arm and the telescopic arm with the same size, the measuring range of the size of the sealing groove in the third embodiment is larger.
Example four:
as shown in fig. 14 and 15, as in the third embodiment, in the fourth embodiment, two rectangular notches 30 are provided at both ends of the measuring arm 3, and a telescopic arm 32 is provided at the position of the rectangular notch 30; in the fourth embodiment, the telescopic arm 32 is connected with the measuring arm 3 in a rotating way, which is different from the third embodiment. The outer wall of the measuring arm 3 corresponding to the rectangular notch 30 is provided with a fixed shaft 37, and the telescopic arm 32 is rotatably connected with the corresponding fixed shaft. In a non-use state, when the telescopic arms 32 are located at the contraction position, the telescopic arms 32 are completely arranged in the rectangular notch 30, and at this time, the calibration straight slot group on the two telescopic arms 32 in the same group can be used for testing a sealing slot with a certain size. As shown in fig. 15, when the sealing groove with a larger size needs to be inspected, the telescopic arm 32 is rotated around the fixed shaft 37 by 180 degrees, a part of the telescopic arm 32 extends out of the rectangular notch 30, the distance between the two calibration straight grooves 31 of the calibration straight groove group is changed, and the sealing grooves with other sizes are inspected.
In order to ensure that the angle of rotation of telescopic arm 32 is 180 degrees, or/and that telescopic arm 32 remains fixed relative to measuring arm 3 after rotating 180 degrees, a positioning mechanism is provided on measuring arm 3. As shown in fig. 14 and 16, finger grooves 39 are provided in end faces of both ends of the measuring arm 3, ear plates 61 are fixed to inner walls of the finger grooves 39, the positioning block 6 is rotatably mounted on the ear plates 61, and the positioning block 6 can be regarded as an arch-shaped notch cut out of a circular metal block. A damping member is arranged between the positioning block 6 and the ear plate 61, so that the relative rotation between the positioning block 6 and the ear plate 61 requires manual driving. A positioning groove 322 is provided in the side wall of the telescopic arm 32 contacting with the measuring arm 3, as shown in fig. 17, the positioning block 6 is rotated to make a part of the positioning block 6 screwed into the positioning groove 322, at this time, the telescopic arm 32 and the measuring arm 3 are relatively fixed, and the telescopic arm 32 is in a position rotated 180 degrees, and two alignment straight grooves 32 of the alignment straight groove group are parallel to each other. The plane of rotation of the positioning block 6 is perpendicular to (or intersects with) the plane of rotation of the telescopic arm 32, so that the positioning block 6 can be inserted into the positioning groove 322.
As shown in fig. 18, when rotating another set of telescopic arms 32, a set of calibration slots can be obtained for verifying other sizes of sealing slots.
Example five:
as shown in fig. 19 and 20, the fifth embodiment is different from the first embodiment in that the measuring arm 3 has a cross-shaped structure, and the measuring arm 3 has a hollow structure 38 inside to reduce the weight of the measuring arm 3. The measuring arm 3 now has four measuring ends, at each of which a set of calibration slots is provided. Compared with the first embodiment, the fifth embodiment has more measuring ends and calibration straight groove groups, so that the sealing grooves with more sizes can be inspected.
Example six:
as shown in fig. 21 to 22, the calibration device in the sixth embodiment has two measuring arms 3, two calibration straight grooves 31 of the calibration straight groove set are respectively located on the two measuring arms 3, and a length adjusting unit is provided between the two measuring arms 3, and the distance between the measuring arms 3 is adjusted by the length adjusting unit, so as to adjust the distance between the two calibration straight grooves 31 forming the calibration straight groove set.
As shown in fig. 21, 22 and 24, the length adjustment unit includes a movable rod 7 and a positioning mechanism, one end of the movable rod 7 is fixedly connected with the end of the measuring arm 3, and the other end of the movable rod 7 extends into the telescopic arm 32 and is slidably connected with the telescopic arm 32. The positioning mechanism is arranged between the movable rod 7 and the telescopic arm 32 to realize the relative fixation between the movable rod 7 and the telescopic arm 32. The positioning mechanism comprises a plurality of positioning rings 71 rotatably connected with the outer wall of the telescopic arm 32, the positioning rings 71 are C-shaped structures, as shown in fig. 23, an insertion rod 73 is arranged on one end face of each positioning ring 71, a shifting block 74 is arranged on the outer wall of the movable rod 7, a long groove 72 is formed in the side wall of the telescopic arm 32, the shifting block 74 penetrates through the long groove 72 and then extends out of the telescopic arm 32, and a jack in inserted connection and matching with the insertion rod 73 is formed in the side wall of the shifting block 74. The shifting block 74 is connected with the long groove 72 in a sliding mode, the shifting block 74 slides along the long groove 72, the shifting block 74 penetrates through the gap of the positioning ring 71 at the moment, when the shifting block 74 reaches a required position, the positioning ring 71 is rotated to enable the end face of the positioning ring 71 to be in contact with the shifting block 74, the inserted link 73 is inserted into the insertion hole in the shifting block 74, the position of the shifting block 74 in the long groove 72 is determined, and the position of the movable link 7 relative to the telescopic arm 32 is determined. The positioning ring 71 is sleeved outside the telescopic arm 32, and when the shifting block 74 is in contact with different positioning rings 71, the distance between two calibration straight grooves 31 forming a calibration straight groove group on the two measuring arms 3 is unequal, so that the calibration can be performed on the sealing grooves with different sizes.
A measurement and correction method for a sealing groove of wellhead Christmas tree equipment comprises the following steps:
(1) selecting a calibration straight slot group with corresponding size according to the size of the sealing slot;
(2) attaching the bottom surface of the measuring device to the end surface of the calibrating device, which is provided with the calibrating straight groove, and attaching the side surface of the measuring device to the side surface of the calibrating device; and placing a fixed side head in the measuring device in one of the calibration straight slots in the calibration straight slot group, placing a movable side head in the other calibration straight slot, enabling the fixed side head and the movable side head to be in contact with the side faces of the corresponding calibration straight slots, adjusting the zero point of the measuring device, and completing calibration.
Claims (10)
1. The utility model provides a well head production tree equipment seal groove measures calibrating device which characterized in that, includes the measuring arm, have the multiunit on the outer wall of measuring arm and proofread the straight flute, two proofread straight flute parallel arrangement that set up in groups, different groups the cross section size of proofread straight flute or/and the interval between the proofread straight flute is different, a set of the proofread straight flute corresponds the seal groove of a specification.
2. The measurement and correction device for the seal groove of the wellhead Christmas tree equipment according to claim 1, wherein the measuring arm is provided with a telescopic arm, the telescopic arm is movably connected with the measuring arm, and a positioning mechanism is arranged between the telescopic arm and the measuring arm;
two calibration straight grooves which are arranged in a group, wherein one calibration straight groove is positioned on the measuring arm, and the other calibration straight groove is positioned on the telescopic arm; or the calibration straight grooves of the same group are all positioned on the measuring arm.
3. The measurement and correction device for the seal groove of the wellhead Christmas tree equipment according to claim 2, wherein the telescopic arm is in sliding connection with the measuring arm, and the sliding track of the telescopic arm is a straight line; the positioning mechanism comprises a fixed cylinder fixed on the side wall of the telescopic arm, a positioning pin arranged in the fixed cylinder in a sliding manner, and a spring positioned between the positioning pin and the fixed cylinder, wherein the action end of the positioning pin is inserted into a positioning hole in the outer wall of the measuring arm under the action of the spring; the outer wall of the measuring arm is provided with a plurality of positioning holes.
4. The device of claim 3, wherein the lateral wall of the measuring arm is provided with a jackscrew, the telescopic arm is provided with a slide rod connected with the measuring arm in a sliding manner, and the jackscrew is screwed to fix the telescopic arm after the jackscrew is tightly pressed against the slide rod.
5. The measurement and correction device for the sealing groove of the wellhead Christmas tree equipment as claimed in claim 2, wherein the telescopic arm is rotatably connected with the measuring arm, the positioning mechanism comprises a positioning block rotatably connected with the measuring arm, a positioning groove is formed in a side wall of the telescopic arm, a rotation plane of the positioning block intersects with a rotation plane of the telescopic arm, and the telescopic arm is relatively fixed with the measuring arm after the positioning block extends into the positioning groove.
6. The apparatus of claim 1, wherein the measuring arm has a cross-shaped structure, and the measuring arm has four measuring ends, and each measuring end has a plurality of groups of straight calibrating grooves.
7. The seal groove measurement and correction device for wellhead Christmas tree equipment according to claim 1, wherein the number of the measuring arms is two, and a length adjustment unit is arranged between the two measuring arms.
8. The measurement and correction device for the sealing groove of the wellhead Christmas tree equipment as claimed in claim 7, wherein the length adjustment unit comprises a movable rod and a positioning mechanism, one end of the movable rod is fixedly connected with the measuring arm, the other end of the movable rod is slidably connected with the telescopic arm, and the positioning mechanism is arranged between the movable rod and the telescopic arm to realize the relative fixation between the movable rod and the telescopic arm.
9. The device for measuring and calibrating the sealing groove of the wellhead Christmas tree equipment according to claim 8, wherein the positioning mechanism comprises a plurality of positioning rings rotatably connected with the outer wall of the telescopic arm, each positioning ring is of a C-shaped structure, an insertion rod is arranged on one end surface of each positioning ring, a shifting block is arranged on the outer wall of each movable rod, each shifting block extends out of the telescopic arm, and a jack in plug-in fit with the insertion rod is arranged on the side wall of each shifting block.
10. A method of calibrating a wellhead christmas tree instrument seal groove measurement calibration device according to any one of claims 1 to 9, comprising the steps of:
(1) selecting a calibration straight slot group with corresponding size according to the size of the sealing slot;
(2) fitting the bottom surface of the measuring device with the end surface of the calibrating device on which the calibrating straight groove is processed, and fitting the side surface of the measuring device with the side surface of the calibrating device; and placing a fixed side head in the measuring device in one of the calibration straight slots in the calibration straight slot group, placing a movable side head in the other calibration straight slot, enabling the fixed side head and the movable side head to be in contact with the side faces of the corresponding calibration straight slots, adjusting the zero point of the measuring device, and completing calibration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210508785.8A CN114608406A (en) | 2022-05-11 | 2022-05-11 | Measurement and correction device and method for sealing groove of wellhead Christmas tree equipment |
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| CN202210508785.8A CN114608406A (en) | 2022-05-11 | 2022-05-11 | Measurement and correction device and method for sealing groove of wellhead Christmas tree equipment |
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| CN202210508785.8A Pending CN114608406A (en) | 2022-05-11 | 2022-05-11 | Measurement and correction device and method for sealing groove of wellhead Christmas tree equipment |
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| CN212747619U (en) * | 2020-07-10 | 2021-03-19 | 全州福达汽车零部件有限公司 | U-shaped bolt correction gauge |
| CN112816004A (en) * | 2021-02-18 | 2021-05-18 | 埃尔斯特仪表(南通)有限公司 | Mechanical water meter convenient to assemble and rapid assembly method |
| CN215598267U (en) * | 2021-07-06 | 2022-01-21 | 苏州优力克流体控制科技有限公司 | Petroleum equipment sealing ring groove measuring tool debugging setting block |
| CN216245934U (en) * | 2021-11-12 | 2022-04-08 | 宝鸡斯斯嘉机床零部件有限公司 | Internal diameter gauge calibration gauge |
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