CN103884778B - End water sealing device during weldless steel tube pipe end online Ultrasonic Detection - Google Patents
End water sealing device during weldless steel tube pipe end online Ultrasonic Detection Download PDFInfo
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- CN103884778B CN103884778B CN201410096833.2A CN201410096833A CN103884778B CN 103884778 B CN103884778 B CN 103884778B CN 201410096833 A CN201410096833 A CN 201410096833A CN 103884778 B CN103884778 B CN 103884778B
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Abstract
End water sealing device when the invention discloses a kind of weldless steel tube pipe end online Ultrasonic Detection.The mandrel of this device is divided into primary seal shaft part, slide-and-guide shaft part, relief groove shaft part, splined shaft section, elastic component shaft part, thrust ball bearing shaft part, clutch shaft bearing shaft part, non-device shaft part, the second bearing shaft part and probe cassette successively from head to tail end; Primary seal shaft part stretches in steel tube end part hole, stepped appearance guide pin bushing shaft part is equipped with, between the shaft shoulder of its large end face and mandrel slide-and-guide shaft part, volute spring is housed, end face top cover is contained on the shoulder of stepped appearance guide pin bushing, in the axial bolt stretching into the O-ring seal positioning seat in tested steel tube end part hole, cover has plate-like O-ring seal, O-ring seal baffle plate and taper orienting lug successively, and the O-ring seal baffle plate end face contacted with plate-like O-ring seal is fitted on the shaft shoulder of stepped appearance guide pin bushing small end thread segment.The guiding of ultrasonic probe box and sealing function combine and realize end part seal by this device.Can be used for the fields such as metallurgy, military project, chemical industry and traffic.
Description
Technical field
The present invention relates to a kind of packoff, end water sealing device when being specifically related to a kind of weldless steel tube pipe end online Ultrasonic Detection.
Background technology
When utilizing ultrasound wave on-line checkingi weldless steel tube pipe end, as illustrated in fig. 1 and 2, seamless tested steel pipe is placed in surface level to be had on the rubbing roller 6 of 3 ° of pivot angles, a probe cassette 5 is housed immediately below the steel pipe A section to be measured that ultrasonic inspection main frame 4 is positioned at tested steel pipe 1, probe cassette 5 is equipped with spring to guarantee to fit completely with tested steel tube surface in short transverse.During detection, sail out of pipe end in order to ensure probe cassette and steadily do not tumble and ultrasonic covering steel pipe completely A section to be measured, set up a plug 2 in tested steel pipe 1 end, as shown in Figure 1, plug 2 is arranged on plug mount pad 3.In testing process, rubbing roller rotarily drives tested steel pipe original place and rotates, and because rubbing roller 6 is with certain angle, makes tested steel pipe all the time by certain axial force, thus guarantees that the end of tested steel pipe and plug 2 is adjacent to.The steel pipe of actual production has certain flexibility, and end adopts sawing, cannot get rid of burr and tangent plane, and therefore, tested Steel pipe end surface and plug binding face often exist dislocation in various degree and gap.But, applicable industry on-line automaticization ultrasonic detection equipment adopts water as ultrasonic wave-coupled agent usually, when water-filled probe cassette moves to tested Steel pipe end surface and plug 2 binding face place, coupled water can enter in pipe along gap, the time that probe cassette stops herein is longer, the water entered is more, these water assembled in pipe can affect the signal to noise ratio (S/N ratio) (transverse defect of especially tested steel pipe detects) of ultrasonic inspection in varying degrees, greatly improve defect rate of false alarm, reduce testing result degree of confidence, have a strong impact on the normal operation of production line.Therefore, utilize water to want to improve the reliability detected as the pipe end Ultrasonic Detection of couplant, effectively must solve tested Steel pipe end surface water-stop problem.
Summary of the invention
For the problem that there is tested Steel pipe end surface water-stop in background technology field, end water sealing device when the object of the present invention is to provide a kind of weldless steel tube pipe end online Ultrasonic Detection.
The technical solution used in the present invention is:
The mandrel of this device is divided into nine shaft parts successively from head to tail end, i.e. primary seal shaft part, slide-and-guide shaft part, relief groove shaft part, splined shaft section, elastic component shaft part, thrust ball bearing shaft part, clutch shaft bearing shaft part, non-device shaft part, the second bearing shaft part and probe cassette; Primary seal shaft part stretches in tested steel tube end part hole, slide-and-guide shaft part, relief groove shaft part, splined shaft section are arranged in guide cylinder, elastic component shaft part and thrust ball bearing shaft part are arranged in entrance bearing cap, clutch shaft bearing shaft part, non-device shaft part and the second bearing shaft part are arranged in casing, and guide cylinder, entrance bearing cap are connected with screw successively with casing.Described primary seal shaft part stretches in tested steel tube end part hole, on shaft part outside outside tested steel tube end part, stepped appearance guide pin bushing is housed, between the large end face of stepped appearance guide pin bushing and the shaft shoulder of mandrel slide-and-guide shaft part, volute spring is housed, end face top cover side is contained on the shoulder of stepped appearance guide pin bushing, end face top cover is connected with guide cylinder by screw, the O-ring seal positioning seat stretched in tested steel tube end part hole is equipped with in another side of end face top cover, in the axial bolt of O-ring seal positioning seat, cover has plate-like O-ring seal successively, O-ring seal baffle plate and taper orienting lug, compress with nut, the O-ring seal baffle plate end face contacted with plate-like O-ring seal is fitted on the shaft shoulder of stepped appearance guide pin bushing small end thread segment, the other end of O-ring seal baffle plate is compressed by nut, the center pit of taper orienting lug is connected with primary seal shaft part screw.
The beneficial effect that the present invention has is:
At tested steel tube end part, a water sealing device is installed, a taper orienting lug is equipped with in the end of this device, between taper orienting lug and packoff guiding position, plate-like O-ring seal is installed, tested steel pipe to be placed in surface level on 3 ° of pivot angle rubbing rollers, during detection, steel pipe rubbing roller drives tested steel pipe rotary, tested steel shaft is to by making the taper orienting lug of end to stretch in pipe near water sealing device after certain axial force and holding out against end face top cover, the guide cylinder band moving mandrel of water sealing device slides axially the stressed radial deformation of plate-like O-ring seal making to be arranged on guide pin bushing, seal when the deflection of plate-like O-ring seal reaches the glade plane space between steel pipe inner ring and taper orienting lug and start to work, during tested steel pipe rollback, plate-like O-ring seal shrinks.This water sealing device can be used for tested steel pipe online pipe end water coincidence formula ultrasonic inspection, can effectively prevent coupled water from entering in pipe, causes pipe end ultrasonic inspection reliability to reduce the quality accident caused.Meanwhile, the guiding of ultrasonic probe box and sealing function are melted into a whole by this device dexterously, rely on machine automatization to realize end part seal.Structure is simple, and dismounting is convenient, is easy to safeguard.
The present invention can be applicable to the fields such as metallurgy, military project, chemical industry and traffic.
Accompanying drawing explanation
Fig. 1 is the online Ultrasonic Detection front view of weldless steel tube pipe end.
Fig. 2 is the online Ultrasonic Detection vertical view of weldless steel tube pipe end.
The fundamental diagram of end face water-stop when Fig. 3 is weldless steel tube pipe end Ultrasonic Detection.
In figure: 1, tested steel pipe, 2, plug, 3, plug mount pad, 4, ultrasonic inspection main frame, 5, probe cassette, 6, rubbing roller, 7, taper orienting lug, 8, stepped appearance guide pin bushing, 9, guide cylinder, 10, mandrel, 11, cylinder tail-hood, 12, entrance bearing cap, 13, casing, 14, casing tail-hood, 15, axle door, 16, 2# taper roll bearing, 17, 1# taper roll bearing, 18, butterfly spring, 20, end face top cover, 21, O-ring seal positioning seat, 22, plate-like O-ring seal, 23, finger ring axle sleeve, 24, thrust ball bearing, 25, ladder axle sleeve, 26, nut, 27, O-ring seal baffle plate, 28, volute spring.
Embodiment
Below in conjunction with drawings and Examples, the present invention is further illustrated.
As shown in Figure 3, the mandrel 10 of this device is divided into nine shaft parts successively from head to tail end, i.e. primary seal shaft part, slide-and-guide shaft part, relief groove shaft part, splined shaft section, elastic component shaft part, thrust ball bearing shaft part, clutch shaft bearing shaft part, non-device shaft part, the second bearing shaft part and probe cassette 5; Primary seal shaft part stretches in tested steel pipe 1 end hole, slide-and-guide shaft part, relief groove shaft part, splined shaft section are arranged in guide cylinder 9, elastic component shaft part and thrust ball bearing shaft part are arranged in entrance bearing cap 12, clutch shaft bearing shaft part, non-device shaft part and the second bearing shaft part are arranged in casing 13, and guide cylinder 9, entrance bearing cap 12 are connected with screw successively with casing 13.Described primary seal shaft part stretches in tested steel pipe 1 end hole, on shaft part outside outside tested steel pipe 1 end, stepped appearance guide pin bushing 8 is housed, between the large end face of stepped appearance guide pin bushing 8 and the shaft shoulder of mandrel 10 slide-and-guide shaft part, volute spring 28 is housed, end face top cover 20 1 sides are contained on the shoulder of stepped appearance guide pin bushing 8, end face top cover 20 is connected with guide cylinder 9 by screw, the O-ring seal positioning seat 21 stretched in tested steel pipe 1 end hole is equipped with in another side of end face top cover 20, in the axial bolt of O-ring seal positioning seat 21, cover has plate-like O-ring seal 22 successively, O-ring seal baffle plate 27 and taper orienting lug 7, compress with nut, O-ring seal baffle plate 27 end face contacted with plate-like O-ring seal 22 is fitted on the shaft shoulder of stepped appearance guide pin bushing 8 small end thread segment, the other end of O-ring seal baffle plate 27 is compressed by nut 26, the center pit of taper orienting lug 7 is connected with primary seal shaft part screw.
O-ring seal positioning seat 21 circumference has four axial bolt, plate-like O-ring seal 22 and O-ring seal baffle plate 27 circumference corresponding have four axially directed holes, plate-like O-ring seal 22 and O-ring seal baffle plate 27 are enclosed within O-ring seal positioning seat 21 by these four axially directed holes vertically, O-ring seal baffle plate 27 realizes axial location by the shaft shoulder of stepped appearance guide pin bushing 8 and the nut 26 of stepped appearance guide pin bushing 8 end face, in tested steel pipe rollback direction, stepped appearance guide pin bushing 8 contacts with end face top cover 20 location realizing this direction near the shaft shoulder of large end face, volute spring 28 is housed between the shaft shoulder of stepped appearance guide pin bushing 8 large end face and primary seal shaft part, the axial end of primary seal shaft part is equipped with taper orienting lug 7, two screws of both core are relied on to realize fixing, four axial bolt of O-ring seal positioning seat 21 use nut 26 to tighten through after four through holes of taper orienting lug 7, and nut 26 and guide pin bushing 8 thread connection section are submerged in the ring groove of taper orienting lug 7, guide cylinder 9 inner chamber has two shaft parts to be guide section and spline section respectively, relief groove is had between guide section and spline section, guide cylinder 9 is enclosed within mandrel 10, its guide section and spline section coordinate with the slide-and-guide shaft part of mandrel 10 and splined shaft section respectively, end face top cover 20 is arranged on the guide section end face of guide cylinder 9 by eight uniform screws, cylinder tail-hood 11 is enclosed within the elastic component shaft part of mandrel 10, and use eight screws to be arranged on the end face of spline section of guide cylinder 9, thrust ball bearing shaft part is equipped with thrust ball bearing, the inner ring of entrance bearing cap 12 and thrust ball bearing nonrotationally enclose joins merga pass screw and is arranged on casing 13, ladder axle sleeve is housed between cylinder tail-hood 11 and entrance bearing cap 12, the butterfly spring that pair of openings is relative on the cover of the outside of ladder axle sleeve small end, cylinder tail-hood 11, butterfly spring and ladder axle sleeve are all positioned at inside entrance bearing cap 12 inner ring, after the clutch shaft bearing section of mandrel 10 tail end and the second bearing section install the first taper roll bearing 17 and two the second taper roll bearings 16 respectively, be fixed on be arranged on casing 13 bearing seat in, between thrust ball bearing and the first taper roll bearing 17, finger ring axle sleeve is housed, mandrel 10 tail end end face is equipped with axle door 15, casing tail-hood 14 is contained on casing 13 by screw.
After described stepped appearance guide pin bushing 8 is arranged on primary seal shaft part, stepped appearance guide pin bushing 8 must be guaranteed can be free to slide on this shaft part, and the shaft shoulder of stepped appearance guide pin bushing 8 large end face and mandrel 10 slide-and-guide shaft part leaves gap, is provided with volute spring 28 in this gap.
Described plate-like O-ring seal 22 is wear-resistant seal circle and has good elasticity, but not good acoustic window material, it axially can increase by radial dimension after uniform pressure, when this radial dimension increase can fill plate-like O-ring seal 22 free state and the gap of tested steel pipe inner ring, thus play sealing function, plate-like O-ring seal 22 needs certain axial pre tightening force when installing, regulating by nut 26 realization in O-ring seal positioning seat 21 4 axial bolt of pretightning force.
Described guide cylinder 9 is sleeved on after on mandrel 10, by can sliding axially along mandrel after axial force, before this device work, by the pretension resilient force of disk spring 18, guide cylinder 9 has the trend of sliding from the tail end of mandrel 10 to head, therefore, cylinder tail-hood 11 is close to the spline end face of mandrel 10, guide cylinder 9 spline section and guide section leave relief groove, and spline section internal diameter is larger than guide section internal diameter, the width of relief groove and spline fitted section remain the noncontact segment length sum maximum axial decrement that allows of plate-like O-ring seal 22 just, therefore, can by safe spacing when guide cylinder 9 slides to tail end from the head of mandrel 10, spline fitted between guide cylinder 9 and mandrel 10 limits the relative motion of circumference between both.
Principle of work of the present invention is as follows:
When tested steel pipe is by 3 ° of pivot angle rubbing roller 6 axial frictions, as depicted in figs. 1 and 2, upper surface, tested Steel pipe end surface top top cover 20, guide cylinder 9 is slided along mandrel 10 tail end, the O-ring seal baffle plate on stepped appearance guide pin bushing 8 is driven to slide along mandrel 10 tail end hold greatly the shaft shoulder to contact inside end face top cover 20 with stepped appearance guide pin bushing 8 after, because O-ring seal positioning seat 21 is fixed on taper orienting lug 7 by four axial bolt, and taper orienting lug 7 is fixed on the end face of mandrel 10, therefore O-ring seal positioning seat 21 opposing seal circle baffle plate 27 is static, this makes O-ring seal baffle plate 27 can extrude plate-like O-ring seal 22 along in mandrel 10 tail end sliding process, plate-like O-ring seal 22 can radially expand after being axially squeezed, when realizing envelope effect behind the gap that deflection exceedes between tested steel pipe inner ring and taper orienting lug 7 outer ring, after tested steel pipe and end face top cover 20 are adjacent to, under the axial pressure effect continued, drive whole mandrel 10 to rotate along original place, after this when probe cassette 5 moves linearly past the binding face of tested steel pipe and end face top cover 20 from tested steel pipe A to be measured section flaw detection starting point along mandrel 10 tail end direction, water in probe cassette 5 can not to enter inside tested Steel pipe end surface thus to affect the reliability of result of detection.After tested steel pipe and end face top cover 20 be adjacent to, tested steel pipe rotates together with end face top cover 20, without relative motion, when therefore plate-like O-ring seal 22 contacts with tested steel pipe inner wall, there are not wearing and tearing in tested steel pipe inner ring and plate-like O-ring seal in circumference and axial both direction.Probe cassette 5 moves to tested steel tube end part flaw detection after immediately below guide cylinder 9 to be terminated, 3 ° of pivot angle rubbing rollers 6 slowly tested steel pipe rollback of reversion drive, tested steel pipe and rotation limit, taper orienting lug 7 limit slowly depart from, under the effect of butterfly spring 18 bounce, guide cylinder 9 is adjacent to tested Steel pipe end surface and slides along tested steel pipe rollback direction, until cylinder tail-hood 11 stops because of the spline end face stop of mandrel 10, in guide cylinder 9 sliding process, once there is gap between end face top cover 20 and stepped appearance guide pin bushing 8, stepped appearance guide pin bushing 8 just slides along tested steel pipe rollback direction by the effect of volute spring 28 bounce, plate-like O-ring seal 22 is retracted initial state within short time as far as possible, prevent from plate-like O-ring seal 22 and tested steel pipe inner ring from long-time Relative friction occurring to move and unstable wear, after tested steel pipe and taper orienting lug 7 depart from completely, tested steel pipe exports flaw detection station.
Claims (1)
1. end water sealing device during a weldless steel tube pipe end online Ultrasonic Detection, the mandrel (10) of this device is divided into nine shaft parts successively from head to tail end, i.e. primary seal shaft part, slide-and-guide shaft part, relief groove shaft part, splined shaft section, elastic component shaft part, thrust ball bearing shaft part, clutch shaft bearing shaft part, non-device shaft part, the second bearing shaft part, primary seal shaft part stretches in tested steel tube end part hole, slide-and-guide shaft part, relief groove shaft part, splined shaft section are arranged in guide cylinder (9), elastic component shaft part and thrust ball bearing shaft part are arranged in entrance bearing cap (12), clutch shaft bearing shaft part, non-device shaft part and the second bearing shaft part are arranged in casing (13), and guide cylinder (9), entrance bearing cap (12) are connected with screw successively with casing (13), it is characterized in that: described primary seal shaft part stretches in tested steel tube end part hole, on shaft part outside outside tested steel tube end part, stepped appearance guide pin bushing (8) is housed, between the large end face of stepped appearance guide pin bushing (8) and the shaft shoulder of mandrel (10) slide-and-guide shaft part, volute spring (28) is housed, end face top cover (20) sides are contained on the shoulder of stepped appearance guide pin bushing (8), end face top cover (20) is connected with guide cylinder (9) by screw, the O-ring seal positioning seat (21) stretched in tested steel tube end part hole is equipped with in end face top cover (20) another side, in the axial bolt of O-ring seal positioning seat (21), cover has plate-like O-ring seal (22) successively, O-ring seal baffle plate (27) and taper orienting lug (7), compress with nut, O-ring seal baffle plate (27) end face contacted with plate-like O-ring seal (22) is fitted on the shaft shoulder of stepped appearance guide pin bushing (8) small end thread segment, the other end of O-ring seal baffle plate (27) is compressed by nut (26), the center pit of taper orienting lug (7) is connected with primary seal shaft part screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096833.2A CN103884778B (en) | 2014-03-17 | 2014-03-17 | End water sealing device during weldless steel tube pipe end online Ultrasonic Detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410096833.2A CN103884778B (en) | 2014-03-17 | 2014-03-17 | End water sealing device during weldless steel tube pipe end online Ultrasonic Detection |
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| CN103884778A CN103884778A (en) | 2014-06-25 |
| CN103884778B true CN103884778B (en) | 2016-01-06 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106696074A (en) * | 2016-12-29 | 2017-05-24 | 鞍山顶鑫自动净化设备有限公司 | Distribution vehicle for producing ceramic composite abrasion-resistant pipeline |
| CN110346285B (en) * | 2019-07-22 | 2021-09-14 | 中国石油大学(华东) | Mechanical property detection device and force detection system |
| EP3974824A4 (en) * | 2019-09-05 | 2022-07-06 | Mitsubishi Heavy Industries, Ltd. | Ultrasonic flaw detection method and extension jig |
| CN112557501B (en) * | 2020-11-12 | 2024-03-01 | 宝武杰富意特殊钢有限公司 | Guiding device for rotary ultrasonic detection of round bar and using method thereof |
| CN114252508B (en) * | 2021-12-13 | 2024-06-18 | 宝武杰富意特殊钢有限公司 | Floating type water sealing device for round steel ultrasonic flaw detector, using method and round steel ultrasonic flaw detector |
| CN218331365U (en) * | 2022-08-24 | 2023-01-17 | 天津精益铁安机电技术有限公司 | Core rod floating mechanism for ultrasonic pipe end detection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| GB1179188A (en) * | 1967-06-01 | 1970-01-28 | Ass Elect Ind | Improvements in or relating to an Ultrasonic Probe. |
| SU705327A1 (en) * | 1977-10-20 | 1979-12-25 | Всесоюзный Научно-Исследовательский Институт По Разработке Неразрушающих Методов И Средств Контроля Качества Материалов | Apparatus for automatic ultrasonic control of pipes |
| SU785747A1 (en) * | 1978-04-03 | 1980-12-07 | Предприятие П/Я А-7102 | Arrangement for ultrasonic flaw detector |
| SU989465A1 (en) * | 1981-07-01 | 1983-01-15 | Предприятие П/Я А-7102 | Device for flaw detector |
| US4663727A (en) * | 1984-04-19 | 1987-05-05 | Rochester Gas & Electric Corp. | Ultrasonic inspection system |
| CN201130168Y (en) * | 2007-12-21 | 2008-10-08 | 常州市武进海旺物资有限公司 | Ultrasound wave detecting tube |
| CN101846657B (en) * | 2009-03-27 | 2013-01-02 | 宝山钢铁股份有限公司 | Pipe end ultrasonic flaw detection device |
| CN201402255Y (en) * | 2009-04-27 | 2010-02-10 | 邵斌 | Hydraulic-type ultrasonic testing tube |
| CN203811582U (en) * | 2014-03-17 | 2014-09-03 | 杭州浙达精益机电技术股份有限公司 | End water sealing device for online ultrasonic detection of pipe end of seamless steel pipe |
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Address after: Hangzhou City, Zhejiang province Yuhang District 311121 West Street Wuchang No. 998 building 18 Room 401 Applicant after: Hangzhou Zheda Jingyi Electromechanical Technology Corporation Limited Address before: Yuhang District, Hangzhou City, Zhejiang Province, 311121 West No. 1500 Building No. 1 room 107 Applicant before: Hangzhou Zheda Jingyi Electromechanical Technology Engineering Co., Ltd. |
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