CN105300238A - Highly-airtight special thread pipe end seal surface diameter and ovality measuring device and method - Google Patents

Highly-airtight special thread pipe end seal surface diameter and ovality measuring device and method Download PDF

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Publication number
CN105300238A
CN105300238A CN201410347581.6A CN201410347581A CN105300238A CN 105300238 A CN105300238 A CN 105300238A CN 201410347581 A CN201410347581 A CN 201410347581A CN 105300238 A CN105300238 A CN 105300238A
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China
Prior art keywords
slide block
angle slide
roll adjustment
adjustment angle
end sealing
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CN201410347581.6A
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Chinese (zh)
Inventor
元麟
王琍
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Baoshan Iron and Steel Co Ltd
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Baoshan Iron and Steel Co Ltd
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Priority to CN201410347581.6A priority Critical patent/CN105300238A/en
Publication of CN105300238A publication Critical patent/CN105300238A/en
Pending legal-status Critical Current

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Abstract

The invention discloses a highly-airtight special thread pipe end seal surface diameter and ovality measuring device which comprises a long base; a dial indicator arranged on the base; an elongation-adjusting slide block assembly, which is arranged at one end of the base and is capable of sliding along the length direction of the base or being kept on the base in a relatively-fixed manner, wherein the elongation-adjusting slide block assembly comprises an elongation-adjusting slide block; and a driven angle slide block assembly which is arranged at the other end of the base, wherein the driven angle slide block assembly comprises a driven angle slide block. The driven angle slide block moves slightly along the length direction of the base under the condition of being pressed by the elongation-adjusting slide block so as to apply pressure to the dial indicator, and a pointer of the dial indicator swings different amplitudes according to the received pressure. The invention also discloses a method for measuring the highly-airtight special thread pipe end seal surface diameter and ovality by utilizing the measuring device above. The measuring device can accurately and stably measure the diameter and ovality of highly-airtight special thread sleeve pipe ends in different specifications, and measurement accuracy is improved.

Description

The measurement mechanism of high airtight special thread end sealing face diameter and ovality and method
Technical field
The present invention relates to a kind of measurement mechanism and method, particularly relate to a kind of sealing surface diameter measurement instrument and method.
Background technology
The degree of depth along with exploitation of oil-gas field strengthens and causes the requirement of petroleum pipeline to improve constantly, and the demand both at home and abroad for high-air-tightness tubing and casing is also increasing year by year.But China not yet has so far for high-air-tightness oil, the unified specifications of surveys of gas bushing and technical standard, and therefore, each enterprise has different measurement standards and specification, for realizing all kinds of measuring method and relevant measurement mechanism is also not quite similar.High-air-tightness oil, gas bushing are compared to API standard oil sleeve pipe, and except the effect that its connecting thread plays auxiliary seal, it also realizes multi-stage sealed by moment of torsion step and sealing surface.End sealing face is the key position of high-air-tightness oil, gas bushing, and its sealing property for sleeve pipe plays conclusive effect.Thus, the high method of airtight specially-threaded casing of measurement and the reliability of relevant apparatus and accuracy is improved most important for the sealing property of this kind of sleeve pipe.
Fig. 1 shows a kind of structure of high airtight specially-threaded casing.As shown in Figure 1, Φ M is expressed as the sealing surface diameter of this sleeve pipe, and the sealing of high airtight specially-threaded casing T reaches to twist by mechanical interference based on the male joint of sleeve pipe pipe end and the taper sealing face of female joint to connect rear water-tight, oil-proof and gastight principle.Fig. 2 then amplifies the structure of the sealing surface of the airtight specially-threaded casing pipe end of the height shown in Fig. 1.As shown in Figure 2, the pipe end of high airtight specially-threaded casing has A and B of two angles, connected by circular arc R x between A and B of these two angles, angle B then transits to face of cylinder Y by circular arc R, the taper face with angle B is marked with the position that length is L, and this position is the practice sites of sealing surface.From Fig. 1 and Fig. 2, the distance between the angle B that the taper face that high airtight specially-threaded casing sealing surface diameter (Φ M) is defined as the two ends of sleeve pipe pipe end has and the joint (a, b) that angle A is formed.
Because the size of seal contact face tolerance of height airtight specially-threaded casing pipe end is little, ovality must be had produce in the process of turning.If ovality is excessive, the sealing property of sleeve pipe certainly will be affected; For this reason, not only need strictly to control the external diameter of this type of sleeve pipe and ovality man-hour carrying out adding, also need the tool and method can measuring high airtight special thread end sealing face parameter exactly.But, because the length L in height airtight special thread end sealing face is very little, usually between 0.5mm-1mm, joint (a of the taper face at the angle B place at two ends and the taper face at angle A place, b) do not exist in actual production process, that is, sealing surface diameter of phi M value is theoretical value, and it is difficult to realize measuring in actual mechanical process.
Publication number is CN201844804U, publication date is on September 13rd, 2010, name is called that the Chinese patent literature of " a kind of measuring instrument for external thread sealing surface of oil casing " relates to a kind of survey instrument of sleeve external thread sealing surface, it comprises measurement bay and dial gauge, described measurement bay comprises support body, the first bearing perpendicular to support body is set in one end of support body, dismountable second bearing perpendicular to support body is set at the other end of support body; First bearing is fixedly installed the first measurement contact; Described second bearing arranges radial hole; Described radial hole internal fixtion arranges the support through radial hole; The outer end of described support is fixedly installed dial gauge, and the inner of support is fixedly installed the second measurement contact; The described first upper surface distance measuring contact distance support body is 3mm-5mm, and the center line of the first measurement contact is parallel with support body.
Publication No. is CN201780084U, date of publication is on March 30th, 2011, name is called that the Chinese patent literature of " measuring instrument for external thread sealing surface of oil casing " discloses a kind of easy sleeve external thread sealing surface measuring instrument, it comprises measurement bay and the dial gauge measuring contact is housed, described measurement bay comprises support body, the first bearing perpendicular to support body is set in one end of support body, dismountable second bearing perpendicular to support body is set at the other end of support body; Described first bearing is arranged vertical survey face and inclination measurement face; Described second bearing is arranged the dial gauge being equipped with and measuring contact; Described first bearing and the second bearing are positioned at the homonymy of support body.
The seal form of high airtight specially-threaded casing mainly contains three types: cylinder sealing, conical surface seal and arc surface sealing, the measurement mechanism of its central column face sealing is more common, survey instrument disclosed in above-mentioned two sections of Chinese patent literatures or instrument are all suitable for the distance of center to measurement datum carrying out setting measurement gauge contact according to the position of the cylinder sealing surface of pipe end, thus realize the measurement of cylinder sealing surface.But it can not be adapted to the measurement of the airtight specially-threaded casing of height with taper sealing face.
Summary of the invention
The object of the present invention is to provide the measurement mechanism of a kind of high airtight special thread end sealing face diameter and ovality, this measurement mechanism can be accurate, stably measure diameter and the ovality of the airtight specially-threaded casing pipe end of height of different size, unify measurement standard, improve measuring accuracy and reduce the assembling amount of surveying instrument.
To achieve these goals, the present invention proposes the measurement mechanism of a kind of high airtight special thread end sealing face diameter and ovality, it comprises:
Microscler pedestal;
Dial gauge, it is located on pedestal;
Roll adjustment angle slide block assembly, it is located at one end of pedestal, it can slide along the length direction of pedestal or relatively remain on regularly on pedestal, roll adjustment angle slide block assembly comprises roll adjustment angle slide block, and this roll adjustment angle slide block has the inclined-plane matched with the taper face in tested height airtight special thread end sealing face;
Driven angle slide block assembly, it is located at the other end of described pedestal, driven angle slide block assembly comprises driven angle slide block, and this driven angle slide block is connected with the connecting link of dial gauge, and driven angle slide block has the inclined-plane matched with the taper face in tested height airtight special thread end sealing face; Wherein
Driven angle slide block under roll adjustment angle slide block executes stressed situation to it along the length direction fine motion of pedestal to apply pressure to dial gauge, the amplitude that the pointer of this dial gauge is different according to the pressure oscillating be subject to.
When utilizing measurement mechanism of the present invention to measure pipe end sealing surface diameter or ovality, tested pipe end is between roll adjustment angle slide block assembly and driven angle slide block assembly, and slide by the length direction of the roll adjustment angle slide block in the slide block assembly of roll adjustment angle along pedestal or be relatively fixed on pedestal, between adjacent for tested pipe end the driven angle slide block be defined in roll adjustment angle slide block and driven angle slide block assembly, now, driven angle slide block is being subject to the fine motion that can produce the length direction along pedestal roll adjustment angle slide block to execute stressed situation to it under, again because driven angle slide block is connected with the connecting link of dial gauge, therefore, this fine motion can form a small acting force and put on dial gauge, the pointer of dial gauge swings different amplitudes under the effect of this acting force on index dial, to make the reading of staff pointed by pointer and to obtain required measurement data.
The small straight-line displacement of the dial gauge connecting link that tested pipe end causes by measurement mechanism of the present invention is converted to the angular displacement of dial gauge pointer, thus makes staff can obtain measurement data exactly.
Because roll adjustment angle slide block and driven angle slide block all have the inclined-plane matched with the taper face in tested height airtight special thread end sealing face, therefore, in measuring process the sealing surface of tested pipe end and the inclined-plane of roll adjustment angle slide block and driven angle slide block completely adjacent; That is, now, the distance between roll adjustment angle slide block and driven angle slide block can equal or substantially equal high airtight special thread end sealing face diameter (Φ M).
High airtight special thread end sealing face dimensional tolerence is less, and in Tutrning Process, end sealing face place inevitably produces ovality.Once ovality is excessive, the sealing property of high airtight special thread pipe end will be had a strong impact on.Measurement mechanism of the present invention accurately can detect sealing surface diameter and the ovality of high airtight special thread pipe end, avoids the airtight specially-threaded casing of non-compliant height to drop into the sealing property affecting whole petroleum-gas fiedl transportation system in actual production.
Further, the measurement mechanism of height of the present invention airtight special thread end sealing face diameter and ovality also comprises guide rail, and it is removably located on pedestal, and roll adjustment angle slide block assembly slides on the length direction of pedestal along guide rail.
The setting of guide rail can ensure the straight-line displacement of roll adjustment angle slide block assembly along the length direction of pedestal, occurs error to avoid final measurement numerical value.
In addition, guide rail removably can be installed on pedestal by bolt or screw assembly, changes with timely dismounting when facilitating way rub.Certainly, cause it frequently to change to prevent guide rail from phenomenon easy to wear occurring, guide rail can adopt the material that hardness is comparatively large, wearing quality is good, such as, applies coated wimet.
Further, the measurement mechanism of height of the present invention airtight special thread end sealing face diameter and ovality also comprises handle, and it is fixedly installed on pedestal, is beneficial to taking and carrying of staff.
Further, in measurement mechanism of the present invention, above-mentioned roll adjustment angle slide block assembly also comprises:
Upper compact heap, it is located at the top of roll adjustment angle slide block;
Lower fixed block, it is located at the below of roll adjustment angle slide block, and is fixedly connected with roll adjustment angle slide block;
Adjusting screw(rod), it runs through lower fixed block, roll adjustment angle slide block, and be connected with upper compact heap, with make to screw adjusting screw(rod) then roll adjustment angle slide block assembly remain on relatively regularly on pedestal, unclamp adjusting screw(rod) then roll adjustment angle slide block assembly can slide along the length direction of pedestal.
When screwing adjusting screw(rod), effect is screwed by the screw thread on screw rod, upper compact heap and lower fixed block apply acting force and upwards downwards respectively to roll adjustment angle slide block, be fixed on a certain position of pedestal, and when unclamping adjusting screw(rod), upper compact heap and lower fixed block are respectively up and down away from roll adjustment angle slide block, the acting force that both apply to roll adjustment angle slide block disappears, roll adjustment angle slide block can freely slide along the length direction of pedestal, thus regulates the distance between roll adjustment angle slide block and driven angle slide block rapidly.
Further, in measurement mechanism of the present invention, above-mentioned driven angle slide block assembly also comprises:
Contiguous block, it is fixedly connected with driven angle slide block;
Linear axis bearing, it is fixed on pedestal;
Linear bearing, it is connected with contiguous block.
When driven angle slide block is along the length direction fine motion of pedestal, linear bearing and linear axis bearing can reduce the mobile frictional resistance of driven angle slide block effectively.
Further, in measurement mechanism of the present invention, said base has stopper slot, above-mentioned driven angle slide block in this stopper slot along the length direction fine motion of pedestal.
Because dial gauge has certain range, if the displacement of driven angle slide block may exceed the range of dial gauge time excessive, for this reason, by stopper slot arrange the maximum displacement of driven angle slide block is limited in dial gauge range within to guarantee the normal use of dial gauge.
It should be noted that, the pedestal in measurement mechanism of the present invention can adopt the material of lightweight so that the taking and carrying of staff, such as, and aluminum alloy materials.
Correspondingly, in order to accurately measure pipe end sealing surface diameter dimension, the invention provides and a kind ofly utilize measurement mechanism mentioned above to measure the method for high airtight special thread end sealing face diameter, it comprises the steps:
Calibrating device is placed between roll adjustment angle slide block and driven angle slide block, the inclined-plane making the taper face in the end sealing face of calibrating device side be close to driven angle slide block to match;
Roll adjustment angle slide block is slided, until the taper face in the end sealing face of calibrating device opposite side is close to the inclined-plane that roll adjustment angle slide block matches along pedestal;
Continue slip roll adjustment angle slide block, make it apply pressure, until the reading of dial gauge is 0 to driven angle slide block;
Adjustment angle slide block is fixed on the position that dial gauge reading is 0;
To be measured is placed between roll adjustment angle slide block and driven angle slide block, by the numerical value that reads from dial gauge with the end sealing face diameter obtaining to be measured.
At this, to be measured is one to one with its calibrating device, after being made zero by dial gauge reading calibration with calibrating device, to eliminate processing and the error in dipping of calibrating device on dial gauge.
In addition, in order to the size of Measurement accuracy end sealing face ovality, present invention also offers and a kind ofly utilize measurement mechanism mentioned above to measure the method for high airtight special thread end sealing face ovality, it comprises the steps:
Rotating to be measured, measuring its end sealing face diameter when turning over different circumferential angle, thus obtain maximal value and the minimum value of end sealing face diameter; End sealing face ovality is obtained according to end sealing face ovality=end sealing face largest diameter value-end sealing face diameter minimum value; Wherein measure the diameter of pipe end sealing surface in a certain circumferential angle according to following step:
Calibrating device is placed between roll adjustment angle slide block and driven angle slide block, the inclined-plane making the taper face in the end sealing face of calibrating device side be close to driven angle slide block to match;
Roll adjustment angle slide block is slided, until the taper face in the end sealing face of calibrating device opposite side is close to the inclined-plane that roll adjustment angle slide block matches along pedestal;
Continue slip roll adjustment angle slide block, make it apply pressure, until the reading of dial gauge is 0 to driven angle slide block;
Adjustment angle slide block is fixed on the position that dial gauge reading is 0;
To be measured is placed between roll adjustment angle slide block and driven angle slide block, obtains to be measured the end sealing face diameter in this circumferential angle by the numerical value read from dial gauge.
Compared to measurement mechanism of the prior art, the measurement mechanism of height of the present invention airtight special thread end sealing face diameter and ovality is owing to have employed technique scheme, it can measure diameter and the ovality of high airtight specially-threaded casing pipe end stably, exactly, unify measurement standard, improve measuring accuracy.
In addition, the measurement mechanism of height of the present invention airtight special thread end sealing face diameter and ovality is portable small and exquisite, is convenient to staff and carries, takes and measure.
In addition, the measurement mechanism of height of the present invention airtight special thread end sealing face diameter and ovality can carry out the measurement of various height airtight special thread end sealing face diameter and ovality simultaneously, to achieve the measurement of a measurement mechanism to different size sleeve pipe pipe end sealing surface diameter and ovality, thus contribute to the outfit amount reducing measurement mechanism, reduce production cost.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of high airtight specially-threaded casing.
Fig. 2 is the enlarged drawing of the airtight specially-threaded casing pipe end of the height shown in Fig. 1 at K place.
Fig. 3 is the structural representation of measurement mechanism under a kind of embodiment of height of the present invention airtight special thread end sealing face diameter and ovality.
Fig. 4 is the upward view of the measurement mechanism shown in Fig. 3.
The structural representation along P direction that Fig. 5 is the measurement mechanism shown in Fig. 3.
Fig. 6 is for the measurement mechanism shown in Fig. 4 is along the cut-open view in A-A direction.
Fig. 7 is the operation chart that the calibration steps of method under a kind of embodiment of high airtight special thread end sealing face diameter measured by employing measurement mechanism of the present invention.
Fig. 8 is the operation chart that the measuring process of method under a kind of embodiment of high airtight special thread end sealing face diameter measured by employing measurement mechanism of the present invention.
Embodiment
Further illustrate making the measurement mechanism of height of the present invention airtight special thread end sealing face diameter and ovality and measuring method according to specific embodiment below, but specific embodiment and related description do not form the improper restriction for technical scheme of the present invention.
Fig. 3 shows the structure of measurement mechanism under a kind of embodiment of height of the present invention airtight special thread end sealing face diameter and ovality.Fig. 4, Fig. 5 and Fig. 6 then respectively illustrate the structure of the measurement mechanism of height of the present invention airtight special thread end sealing face diameter under different observation state and ovality.
As shown in Figure 3 and Figure 4, measurement mechanism Z under above-mentioned embodiment comprises microscler pedestal 1, dial gauge 2, guide rail 3, roll adjustment angle slide block assembly 4, driven angle slide block assembly 5 and handle 6, wherein, dial gauge 2 is fixedly installed on pedestal 1, roll adjustment angle slide block assembly 4 is arranged at one end of pedestal 1, driven angle slide block assembly 5 is arranged at the other end of pedestal 1, guide rail 3 is removably fixedly installed on the bottom surface of pedestal 1 by screw assembly 7, like this, roll adjustment angle slide block assembly 4 can slide along guide rail or relatively remain on regularly on pedestal on the length direction of pedestal, handle is fixedly installed on pedestal 1 by bolt assembly 8.
As shown in Figure 3, roll adjustment angle slide block assembly 4 comprises compact heap 41, roll adjustment angle slide block 42, lower fixed block 43, adjusting screw(rod) 44 and pad 45, wherein, upper compact heap 41 is located at the top of roll adjustment angle slide block 42, lower fixed block 43 is located at the below of roll adjustment angle slide block 42, and be fixedly connected with by screw 46 with roll adjustment angle slide block 42, pad 45 is located between lower fixed block 43 and adjusting screw(rod) 44, adjusting screw(rod) 44 runs through pad 45 from bottom to up successively, lower fixed block 43, roll adjustment angle slide block 42, and be connected with upper compact heap 41, when screwing adjusting screw(rod), roll adjustment angle slide block assembly 4 can remain on a certain position of pedestal 1 relatively regularly, and when unclamping adjusting screw(rod), roll adjustment angle slide block assembly 4 can slide along the length direction of pedestal.At this, this roll adjustment angle slide block 42 has the inclined-plane 42b matched with the taper face in height to be measured airtight special thread end sealing face (not shown in Fig. 3).
As Fig. 3, Fig. 4, shown in Fig. 5 and Fig. 6, driven angle slide block assembly 5 comprises driven angle slide block 51, contiguous block 52, linear bearing 53 and linear axis bearing 54, contiguous block 52 is fixedly connected with driven angle slide block 51, linear bearing 53 is fixedly connected with contiguous block 52, linear axis bearing 54 is fixed on pedestal 1, driven angle slide block 51 is connected with the connecting link 21 of dial gauge, when roll adjustment angle slide block 42 slides on the length direction of pedestal along guide rail, tested pipe end constantly presses close to driven angle slide block 51 until the two ends of tested pipe end are close to roll adjustment angle slide block 42 and driven angle slide block 51 respectively, subsequently, roll adjustment angle slide block 42 will apply pressure towards driven angle slide block 51 gradually, now, driven angle slide block 51 will produce fine motion along the length direction of pedestal and apply pressure with the connecting link 21 by dial gauge to dial gauge 2, the pointer 22 of this dial gauge can produce different angular displacements according to suffered pressure on index dial, on the equal corresponding index dial of each angular displacement one concrete reading.At this, this driven angle slide block 51 has the inclined-plane 51a matched with the taper face in height to be measured airtight special thread end sealing face 10.
It should be noted that, the angle on the inclined-plane of roll adjustment angle slide block and driven angle slide block is determined by the angle of the taper face in the end sealing face of to be measured, and the angular range that the taper face in high airtight special thread end sealing face is formed is usually between 10 °-30 °.
Continue to consult Fig. 4, the bottom of pedestal 1 be provided with stopper slot 9, driven angle slide block 51 in stopper slot 9 along the length direction fine motion of pedestal, with the range avoiding the fine motion of driven angle slide block to exceed dial gauge.
Fig. 7 and Fig. 8 respectively illustrates the operation steps of method under a kind of embodiment that high airtight special thread end sealing face diameter measured by employing measurement mechanism of the present invention.
As shown in Figure 7 and Figure 8, the measurement mechanism under above-mentioned embodiment is adopted to carry out the step of the measurement of high airtight special thread end sealing face diameter as follows:
1) calibrating device 100 is placed between roll adjustment angle slide block 42 and driven angle slide block 51, the inclined-plane 51a making the taper face of the end sealing face 100a of calibrating device 100 side be close to driven angle slide block to match;
2) roll adjustment angle slide block 42 is made to slide along pedestal 1 towards driven angle slide block 51, until the taper face of the end sealing face 100b of calibrating device 100 opposite side is close to the inclined-plane 42b that roll adjustment angle slide block matches;
3) continue slip roll adjustment angle slide block 42, make it apply pressure to driven angle slide block 51, until the reading of dial gauge 2 is 0, to eliminate processing and the error in dipping of calibrating device;
4) adjustment angle slide block 42 is fixed on the position that dial gauge reading is the pedestal of 0;
5) to be measured 200 is placed between roll adjustment angle slide block 42 and driven angle slide block 51, now, driven angle slide block 51 is subject to roll adjustment angle slide block 42 and to be measured 200 and applies pressure to it, length direction fine motion along pedestal 1 applies pressure with the connecting link 21 by dial gauge to dial gauge 2, the pointer of dial gauge to swing under pressure after certain amplitude and points to a reading, by obtaining the end sealing face diameter of to be measured from reading on dial gauge 2 on index dial.
Based on above-mentioned steps, continue to consult Fig. 7 and Fig. 8, adopt the measurement mechanism under above-mentioned embodiment can also realize the measurement of high airtight special thread end sealing face ovality, concrete steps are as follows:
A) rotating to be measured 200, measuring its end sealing face diameter when turning over different circumferential angle, thus obtain maximal value and the minimum value of end sealing face diameter, it comprises:
A1) calibrating device 100 is placed between roll adjustment angle slide block 42 and driven angle slide block 51, the inclined-plane 51a making the taper face of the end sealing face 100a of calibrating device 100 side be close to driven angle slide block to match;
A2) roll adjustment angle slide block 42 is made to slide along pedestal 1 towards driven angle slide block 51, until the taper face of the end sealing face 100b of calibrating device 100 opposite side is close to the inclined-plane 42b that roll adjustment angle slide block matches;
A3) continue slip roll adjustment angle slide block 42, make it apply pressure to driven angle slide block 51, until the reading of dial gauge 2 is 0, to eliminate processing and the error in dipping of calibrating device;
A4) adjustment angle slide block 42 is fixed on the position that dial gauge reading is the pedestal of 0;
A5) to be measured 200 is placed between roll adjustment angle slide block 42 and driven angle slide block 51, now, driven angle slide block 51 is subject to roll adjustment angle slide block 42 and to be measured 200 and applies pressure to it, length direction fine motion along pedestal applies pressure with the connecting link 21 by dial gauge to dial gauge 2, the pointer of dial gauge to swing under pressure after certain amplitude and points to a reading, by obtaining the end sealing face diameter of to be measured from reading on dial gauge 2 on index dial;
A6) steps A 1 is repeated) to A5), until obtain maximal value and the minimum value of end sealing face diameter after turning over different circumferential angle;
B) end sealing face ovality is obtained according to end sealing face ovality=end sealing face largest diameter value-end sealing face diameter minimum value.
In addition, according to mean diameter=(end sealing face largest diameter value-end sealing face diameter minimum value)/2 in end sealing face, the average in end sealing face can also be obtained.
That enumerates it should be noted that above is only specific embodiments of the invention, obviously the invention is not restricted to above embodiment, has many similar changes thereupon.If all distortion that those skilled in the art directly derives from content disclosed by the invention or associates, protection scope of the present invention all should be belonged to.

Claims (8)

1. a measurement mechanism for high airtight special thread end sealing face diameter and ovality, is characterized in that, comprising:
Microscler pedestal;
Dial gauge, it is located on described pedestal;
Roll adjustment angle slide block assembly, it is located at one end of described pedestal, it can slide along the length direction of pedestal or relatively remain on regularly on pedestal, described roll adjustment angle slide block assembly comprises roll adjustment angle slide block, and this roll adjustment angle slide block has the inclined-plane matched with the taper face in tested height airtight special thread end sealing face;
Driven angle slide block assembly, it is located at the other end of described pedestal, described driven angle slide block assembly comprises driven angle slide block, and this driven angle slide block is connected with the connecting link of dial gauge, and described driven angle slide block has the inclined-plane matched with the taper face in tested height airtight special thread end sealing face; Wherein
Described driven angle slide block under roll adjustment angle slide block executes stressed situation to it along the length direction fine motion of pedestal to apply pressure to dial gauge, the amplitude that the pointer of described dial gauge is different according to the pressure oscillating be subject to.
2. measurement mechanism as claimed in claim 1, it is characterized in that, also comprise: guide rail, it is removably located on described pedestal, and described roll adjustment angle slide block assembly slides on the length direction of pedestal along described guide rail.
3. measurement mechanism as claimed in claim 1, it is characterized in that, also comprise: handle, it is fixedly installed on described pedestal.
4. measurement mechanism as claimed in claim 1, it is characterized in that, described roll adjustment angle slide block assembly also comprises:
Upper compact heap, it is located at the top of roll adjustment angle slide block;
Lower fixed block, it is located at the below of roll adjustment angle slide block, and is fixedly connected with roll adjustment angle slide block;
Adjusting screw(rod), it runs through described lower fixed block, roll adjustment angle slide block, and be connected with upper compact heap, with make to screw adjusting screw(rod) then roll adjustment angle slide block assembly remain on relatively regularly on pedestal, unclamp adjusting screw(rod) then roll adjustment angle slide block assembly can slide along the length direction of pedestal.
5. measurement mechanism as claimed in claim 1, it is characterized in that, described driven angle slide block assembly also comprises:
Contiguous block, it is fixedly connected with described driven angle slide block;
Linear axis bearing, it is fixed on described pedestal;
Linear bearing, it is connected with contiguous block.
6. measurement mechanism as claimed in claim 1, is characterized in that described pedestal has stopper slot, described driven angle slide block in this stopper slot along the length direction fine motion of pedestal.
7. adopt measurement mechanism as claimed in claim 1 to measure the method for high airtight special thread end sealing face diameter, it is characterized in that, comprise step:
Calibrating device is placed between roll adjustment angle slide block and driven angle slide block, the inclined-plane making the taper face in the end sealing face of calibrating device side be close to driven angle slide block to match;
Roll adjustment angle slide block is slided, until the taper face in the end sealing face of calibrating device opposite side is close to the inclined-plane that roll adjustment angle slide block matches along pedestal;
Continue slip roll adjustment angle slide block, make it apply pressure, until the reading of dial gauge is 0 to driven angle slide block;
Adjustment angle slide block is fixed on the position that dial gauge reading is 0;
To be measured is placed between roll adjustment angle slide block and driven angle slide block, is obtained the end sealing face diameter of to be measured by the numerical value read from dial gauge.
8. adopt measurement mechanism as claimed in claim 1 to measure the method for high airtight special thread end sealing face ovality, it is characterized in that, comprise step:
Rotating to be measured, measuring its end sealing face diameter when turning over different circumferential angle, thus obtain maximal value and the minimum value of end sealing face diameter; End sealing face ovality is obtained according to end sealing face ovality=end sealing face largest diameter value-end sealing face diameter minimum value; Wherein measure the diameter of pipe end sealing surface in a certain circumferential angle according to following step:
Calibrating device is placed between roll adjustment angle slide block and driven angle slide block, the inclined-plane making the taper face in the end sealing face of calibrating device side be close to driven angle slide block to match;
Roll adjustment angle slide block is slided, until the taper face in the end sealing face of calibrating device opposite side is close to the inclined-plane that roll adjustment angle slide block matches along pedestal;
Continue slip roll adjustment angle slide block, make it apply pressure, until the reading of dial gauge is 0 to driven angle slide block;
Adjustment angle slide block is fixed on the position that dial gauge reading is 0;
To be measured is placed between roll adjustment angle slide block and driven angle slide block, obtains to be measured the end sealing face diameter in this circumferential angle by the numerical value read from dial gauge.
CN201410347581.6A 2014-07-21 2014-07-21 Highly-airtight special thread pipe end seal surface diameter and ovality measuring device and method Pending CN105300238A (en)

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CN201285269Y (en) * 2008-10-22 2009-08-05 宝山钢铁股份有限公司 Oil jacket pipe end sealing surface measuring gage
CN201535657U (en) * 2009-11-12 2010-07-28 无锡西姆莱斯石油专用管制造有限公司 Thread connector inner sealing taper surface diameter measuring device
CN202133358U (en) * 2011-06-25 2012-02-01 无锡西姆莱斯石油专用管制造有限公司 Replaceable outside thread sealing surface diameter measuring instrument
CN103712543A (en) * 2013-12-10 2014-04-09 汉中万目仪电有限责任公司 Measuring instrument for diameter of external sealing surface of thread of petroleum pipe

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2539140Y (en) * 2002-04-05 2003-03-05 天津钢管有限责任公司 Measurer for sealed cone diameter of air-tight screw joint of petroleum sleeve
CN201285269Y (en) * 2008-10-22 2009-08-05 宝山钢铁股份有限公司 Oil jacket pipe end sealing surface measuring gage
CN201535657U (en) * 2009-11-12 2010-07-28 无锡西姆莱斯石油专用管制造有限公司 Thread connector inner sealing taper surface diameter measuring device
CN202133358U (en) * 2011-06-25 2012-02-01 无锡西姆莱斯石油专用管制造有限公司 Replaceable outside thread sealing surface diameter measuring instrument
CN103712543A (en) * 2013-12-10 2014-04-09 汉中万目仪电有限责任公司 Measuring instrument for diameter of external sealing surface of thread of petroleum pipe

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Application publication date: 20160203