CN105675233A - Automatic sealing performance testing device for welded tee joint - Google Patents

Automatic sealing performance testing device for welded tee joint Download PDF

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Publication number
CN105675233A
CN105675233A CN201610191081.7A CN201610191081A CN105675233A CN 105675233 A CN105675233 A CN 105675233A CN 201610191081 A CN201610191081 A CN 201610191081A CN 105675233 A CN105675233 A CN 105675233A
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CN
China
Prior art keywords
cover
supervisor
sealing
cylinder
pad
Prior art date
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CN201610191081.7A
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Chinese (zh)
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CN105675233B (en
Inventor
王国良
王楠
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王国良
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Priority to CN201610191081.7A priority Critical patent/CN105675233B/en
Publication of CN105675233A publication Critical patent/CN105675233A/en
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Publication of CN105675233B publication Critical patent/CN105675233B/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G01M3/28Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
    • G01M3/2853Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals

Abstract

The invention discloses an automatic sealing performance testing device for a welded tee joint and belongs to the sealing performance testing machine field. The automatic sealing performance testing device comprises a base; and a positioning mechanism for the welded tee joint, a sealing performance testing mechanism and a push mechanism of the sealing performance testing mechanism are arranged on the base. With the automatic sealing performance testing device of the invention adopted, the problem of difficulty in judging trace leak by a pressure sensor which is caused by a large inner cavity which is brought by a situation that a large-sized tee joint is plugged at the outlets of the tee joint can be solved. The automatic sealing performance testing device can extent into the tee joint, so that the size of a testing cavity is decreased, and the sensitivity of the pressure sensor can be improved.

Description

The automatic sealing property testing apparatus of a kind of welding Y-junction
Technical field
The present invention relates to sealing performance testing machine field, particularly relate to the automatic sealing property testing apparatus of a kind of welding Y-junction.
Background technology
Y-junction, as pipe fitting, conduit coupling, is generally used in main pipeline and wants take-off pipe place, for medium shunt. A mouth pipe for industrial PE (polyethylene) Y-junction is normally become by pipe fitting welding, and welding place because of reasons such as fusion temp, docking unfairnesses, leakage situation may occur, and Y-junction is revealed to concentrate and occurred in welding place. And it is as the important conduit coupling of gas ductwork, occurs leaking and have bigger potential safety hazard, before therefore using, require taking pressurized gas to be that medium carries out experiments of sealing performance.
At present, Y-junction carries out experiments of sealing performance and usually adopts bubble method and baroceptor monitoring method, adopt baroceptor monitoring method, often Y-junction three outlets are carried out shutoff, internal cavities is pressurized to pressurize after preset value, monitor air pressure inside change by baroceptor, judge in cavity, whether air pressure reduces, and whether threeway leaks. But some Y-junction volume is relatively big, if only carrying out shutoff in Y-junction three exits, internal cavities can be relatively big, and minute leakage is less on the impact of air pressure inside, and baroceptor is easily judged by accident.
Summary of the invention
The present invention adopts exit shutoff to solve big model Y-junction, internal cavities is bigger, baroceptor not easily judges the problem of micro-leakage, it is proposed to a kind of stretches into Y-junction inside, reduce test cavity, improve the sealing property testing apparatus of baroceptor sensitivity.
In order to realize above-mentioned purpose, the present invention is by the following technical solutions: the automatic sealing property testing apparatus of a kind of welding Y-junction, comprising a base, described base is provided with the delivery device of the locating mechanism of a Y-junction, a sealing performance testing machine structure and sealing performance testing machine structure;
Described locating mechanism is a cylinder laterally placed, the internal diameter of cylinder mates with supervisor's external diameter of Y-junction, offer a mouth pipe locating slot of a Y-junction on cylinder side wall along cylindrical direction, a described mouth pipe locating slot is toward extending to end face of cylinder away from delivery device one end;
Described delivery device comprises limiting plate, back up pad, sliding track mechanism and back up pad driving mechanism, described sliding track mechanism is arranged along cylindrical direction, described limiting plate both sides are positioned on the slide block of sliding track mechanism, vertical with cylinder arrange, limiting plate is fixed with back up pad towards cylinder side, another side is connected with back up pad driving mechanism, and back up pad is pushed by back up pad driving mechanism can stretch to cylinder interior, and described back up pad is provided with sealing performance testing machine structure;
Described sealing performance testing machine structure at least comprises upper end cover assembly, lower end cover assembly, pressure ring assembly and end cap driving mechanism; Described upper end cover assembly is divided into upper end cover and connects axle, and described upper end cover and axle are all right cylinder and central axes, and centrally axis is analysed and observe in " T " font; Described lower end cover assembly is followed successively by lower end cover, connection section and supervisor's inner wall sealing block from top to bottom, lower end cover is and the right cylinder of the external diameters such as upper end cover, lower end cover lower surface is connected by the upper surface of connection section with supervisor's inner wall sealing block, supervisor's inner wall sealing block entirety is in right cylinder, upper surface is the cambered surface mated with threeway supervisor's inwall, and lower end cover and supervisor's inner wall sealing block central axes, centrally axis is analysed and observe in " work " font; Described supervisor's inner wall sealing block is also provided with at least one test gas channels; Described lower end cover assembly centrally axis run through the through hole being provided with the company's axle with upper end cover assembly and mating, even axle is from top to bottom through the center through hole of lower end cover assembly, and fix with one piece of web plate, lower end cover assembly is limited between upper end cover and web plate slidably; All being provided with oblique outer edge on described upper end cover and lower end cover phase opposite, two oblique outer edges form the spacing squeezing groove of sealing-ring, are provided with a mouth seal of tube circle in spacing squeezing groove; An annular sealing-ring locating slot is offered around center axis in the upper surface of described supervisor's inner wall sealing block, in sealing-ring locating slot, is provided with supervisor's inner wall sealing circle; Described supervisor's inner wall sealing block outer sheath is provided with pressure ring assembly, on the downside of described pressure ring assembly, upside-down mounting has some plugs to play bolt, bolt-through web plate beaten by plug and pressure ring assembly is fixed, web plate and plug are beaten and are slidably connected between bolt, and the plug between web plate and pressure ring assembly is beaten and is arranged with spring on bolt; Described lower end cover assembly is connected with end cap driving mechanism through web plate by some connecting rods, and end cap driving mechanism is positioned in the back up pad of delivery device.
As preferably, described pressure ring assembly upper surface is the cambered surface mated with threeway supervisor's inwall, is not testing state, and pressure ring assembly upper surface is higher than supervisor's inner wall sealing block upper surface.
As preferably, the lower surface of described back up pad is the cambered surface mated with threeway supervisor's inwall.
As preferably, the oblique outer edge on described upper end cover and lower end cover phase opposite is all the chamfering of 45 °.
As preferably, described back up pad driving mechanism and end cap driving mechanism are all cylinders.
Therefore, the present invention has following useful effect: 1, can reduce test cavity, it is to increase test precision; 2, automatic operation, test efficiency height; 3, structure linkage is strong, and cost of manufacture is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention.
Fig. 2 is the structural representation of another angle of the present invention.
Fig. 3 is the structural representation of sealing performance testing machine structure of the present invention.
Fig. 4 is the structural representation of sealing performance testing machine another angle of structure of the present invention.
Fig. 5 is the front view of sealing performance testing machine structure of the present invention.
Fig. 6 is the sectional view before sealing performance testing machine structure of the present invention uses.
Fig. 7 is sectional view during sealing performance testing machine structure of the present invention use.
Fig. 8 is the structural representation before the present invention uses.
Fig. 9 is the structural representation in use procedure of the present invention.
Figure 10 is another kind of structural representation in use procedure of the present invention.
1: base; 2: locating mechanism;201: cylinder; 202: a mouth pipe locating slot; 3: sealing performance testing machine structure; 301: upper end cover assembly; 302: lower end cover assembly; 303: pressure ring assembly; 304: end cap driving mechanism; 305: supervisor's inner wall sealing block; 306: web plate; 307: upper end cover; 308: a mouth seal of tube circle; 309: lower end cover; 310: even axle; 311: supervisor's inner wall sealing circle; 312: spring; 313: bolt played by plug; 314: connecting rod; 4: delivery device; 401: sliding track mechanism; 402: back up pad driving mechanism; 403: limiting plate; 404: back up pad; 5: Y-junction; 501: a mouth pipe; 6: test gas channels; 7: sealed cavity; 8: welding place.
Embodiment
Below in conjunction with accompanying drawing and specific embodiments, the present invention will be further described.
The automatic sealing property testing apparatus of a kind of welding Y-junction, as shown in Figure 1 and Figure 2, comprising a flat base 1, described base 1 is provided with locating mechanism 2, sealing performance testing machine structure 3 of a Y-junction 5 and the delivery device 4 of sealing performance testing machine structure 3. Locating mechanism 2 is for the placement of Y-junction 5 and location, and for stretching into, Y-junction 5 carries out sealing and testing stopping property sealing performance testing machine structure 3, and delivery device 4 determines position for sealing performance testing machine structure 3 is delivered to Y-junction 5 inside.
Described locating mechanism 2 is a cylinder 201 laterally placed, the internal diameter of cylinder 201 mates with supervisor's external diameter of Y-junction 5, a mouth pipe locating slot 202 of a Y-junction 5 is offered in cylinder 201 sidewall top side along cylinder 201 direction, a described mouth pipe locating slot 202 is from cylinder 201 mid-way toward extending to cylinder 201 end face away from delivery device 4 one end, and mouth pipe locating slot 202 width mates with mouth pipe 501 external diameter.
Described delivery device 4 comprises limiting plate 403, back up pad 404, sliding track mechanism 401 and back up pad driving mechanism 402, described sliding track mechanism 401 is Liang Gen polished rod mechanism, arrange along cylinder 201 direction, described limiting plate 403 both sides are positioned on the slide block of sliding track mechanism 401, vertical with cylinder 201 arrange, limiting plate 403 is fixed with back up pad 404 towards cylinder 201 side, another side is connected with back up pad driving mechanism 402, described back up pad driving mechanism 402 is cylinder, back up pad 404 is pushed by back up pad driving mechanism 402 can stretch to cylinder 201 inside, described back up pad 404 lower surface is the cambered surface mated with threeway supervisor's inwall, inwall veneer slippage can be responsible for threeway, back up pad 404 is provided with sealing performance testing machine structure 3.
Described sealing performance testing machine structure 3 at least comprises upper end cover assembly 301, lower end cover assembly 302, pressure ring assembly 303 and end cap driving mechanism 304, as shown in Fig. 3 to Fig. 7.
Described upper end cover assembly 301 is divided into upper end cover 307 and connects axle 310, and described upper end cover 307 and axle 310 are all right cylinder and central axes, and centrally axis is analysed and observe in " T " font.
Described lower end cover assembly 302 is followed successively by lower end cover 309, connection section and supervisor's inner wall sealing block 305 from top to bottom, lower end cover 309 is and the right cylinder of upper end cover 307 external diameter such as grade, lower end cover 309 lower surface is connected by the upper surface of connection section with supervisor's inner wall sealing block 305, supervisor's inner wall sealing block 305 entirety is in right cylinder, upper surface is the cambered surface mated with threeway supervisor's inwall, and lower end cover 309 and supervisor's inner wall sealing block 305 central axes, centrally axis is analysed and observe in " work " font;Described supervisor's inner wall sealing block 305 is also provided with two test gas channels 6, it is possible to for inflation, venting, be connected with the gas circuit test macro of outside.
Described lower end cover assembly 302 centrally axis run through the through hole being provided with the company's axle 310 with upper end cover assembly 301 and mating, even axle 310 is from top to bottom through the center through hole of lower end cover assembly 302, and fix with one piece of web plate 306, lower end cover assembly 302 is limited between upper end cover 307 and web plate 306 slidably.
Described upper end cover 307 and lower end cover 309 phase opposite are all provided with the oblique outer edge of chamfering at 45 °, two oblique outer edges form the spacing squeezing groove of sealing-ring, a mouth seal of tube circle 308 it is provided with in spacing squeezing groove, therefore, in separation trend between upper end cover 307 and lower end cover 309, fit with web plate 306 on the downside of lower end cover assembly 302; An annular sealing-ring locating slot is offered around center axis in the upper surface of described supervisor's inner wall sealing block 305, in sealing-ring locating slot, is provided with supervisor's inner wall sealing circle 311.
Described supervisor's inner wall sealing block 305 outer sheath is provided with pressure ring assembly 303, described pressure ring assembly 303 upper surface is the cambered surface mated with threeway supervisor's inwall, do not testing state, pressure ring assembly 303 upper surface is higher than supervisor's inner wall sealing block 305 upper surface, on the downside of pressure ring assembly 303, upside-down mounting has four plugs to play bolt 313, bolt 313 played by plug, and to run through web plate 306 fixing with pressure ring assembly 303, web plate 306 and plug are beaten and are slidably connected between bolt 313, and the spring 312 being arranged with on bolt 313 and being compressed played by the plug between web plate 306 and pressure ring assembly 303.
Described lower end cover assembly 302 is connected with end cap driving mechanism 304 through web plate 306 by four connecting rods 314, and described end cap driving mechanism 304 is twin shaft cylinder, and the cylinder body of cylinder is positioned in the back up pad 404 of delivery device 4.
During test, see Fig. 6 to Figure 10, first moving in cylinder 201 by Y-junction 5 from mouth pipe locating slot 202 side, a mouth pipe moves to innermost end location along a mouth pipe locating slot 202; Back up pad driving mechanism 402 pushes limiting plate 403 and moves, indirect Push back up pad 404 and sealing performance testing machine structure 3 enter in threeway supervisor from cylinder 201 the other end, when limiting plate 403 is stopped by cylinder 201, stopping mobile, sealing performance testing machine structure 3 just moves to a positive downside of mouth pipe. Start end cap driving mechanism 304, end cap driving mechanism 304 promotes all parts on the upside of web plate 306 and web plate 306 to move toward direction, hole in a mouth pipe, upper end cover 307 and lower end cover 309 first stretch into hole in a mouth pipe, end cap driving mechanism 304 continues to push, inwall laminating it is responsible for Y-junction 5 when pressure ring assembly 303 rises to, stopping moves, owing to there being compression spring 312 to connect between pressure ring assembly 303 and web plate 306, being fixedly connected with again between web plate 306 and upper end cover assembly 301, upper end cover 307 also stops upper shifting; Lower end cover 309 continues upper shifting, a mouth seal of tube circle 308 is extruded with upper end cover 307, prop up mouth seal of tube circle 308 to expand, with a mouth pipe inwall gluing, sealing, if processing is accurately, now, the supervisor's inner wall sealing circle 311 being responsible for inner wall sealing block 305 upper surface also just seals with the laminating extruding of Y-junction 5 inwall; If the deviation of being processed with, upper end cover 307 and lower end cover 309 have been fitted or cannot have been extruded expansion mouth seal of tube circle 308 again, supervisor's inner wall sealing circle 311 is not also fitted with Y-junction 5 inwall, then end cap driving mechanism 304 can continue to push, now, lower end cover 309 and upper end cover 307 move on another, web plate 306 also can go up the spring 312 moved between compression and pressure ring assembly 303, until supervisor's inner wall sealing circle 311 of supervisor inner wall sealing block 305 upper surface and the laminating extruding sealing of Y-junction 5 inwall.When a mouth seal of tube circle 308 and a mouth pipe inwall gluing, sealing, supervisor's inner wall sealing circle 311 and Y-junction 5 inwall gluing, sealing, just a sealed cavity 7 is defined between two sealing-rings, and welding place 8 of Y-junction 5 is just on this sealed cavity 7 wall, like this, just by two test gas channels 6 on supervisor's inner wall sealing block 305, pressurization, pressure release in sealed cavity 7, carry out experiments of sealing performance to welding place 8.

Claims (5)

1. the automatic sealing property testing apparatus of a welding Y-junction, comprise a base (1), it is characterised in that: described base (1) is provided with the delivery device (4) of the locating mechanism (2) of a Y-junction (5), a sealing performance testing machine structure (3) and sealing performance testing machine structure (3);
Described locating mechanism (2) is a cylinder (201) laterally placed, the internal diameter of cylinder (201) mates with supervisor's external diameter of Y-junction (5), offer mouth pipe locating slot (202) of a Y-junction (5) on cylinder (201) sidewall along cylinder (201) direction, described mouth pipe locating slot (202) is toward extending to cylinder (201) end face away from delivery device (4) one end;
Described delivery device (4) comprises limiting plate (403), back up pad (404), sliding track mechanism (401) and back up pad driving mechanism (402), described sliding track mechanism (401) is arranged along cylinder (201) direction, described limiting plate (403) both sides are positioned on the slide block of sliding track mechanism (401), vertical with cylinder (201) arrange, limiting plate (403) is fixed with back up pad (404) towards cylinder (201) side, another side is connected with back up pad driving mechanism (402), back up pad (404) is pushed by back up pad driving mechanism (402) can stretch to cylinder (201) inside, described back up pad (404) is provided with sealing performance testing machine structure (3),
Described sealing performance testing machine structure (3) at least comprises upper end cover assembly (301), lower end cover assembly (302), pressure ring assembly (303) and end cap driving mechanism (304); Described upper end cover assembly (301) is divided into upper end cover (307) and connects axle (310), and described upper end cover (307) and axle (310) are all right cylinder and central axes, and centrally axis is analysed and observe in " T " font; Described lower end cover assembly (302) is followed successively by lower end cover (309), connection section and supervisor's inner wall sealing block (305) from top to bottom, lower end cover (309) is and the right cylinder of the external diameters such as upper end cover (307), lower end cover (309) lower surface is connected by the upper surface of connection section with supervisor's inner wall sealing block (305), supervisor's inner wall sealing block (305) entirety is in right cylinder, upper surface is the cambered surface mated with threeway supervisor's inwall, and lower end cover (309) and supervisor's inner wall sealing block (305) central axes, centrally axis is analysed and observe in " work " font; Described supervisor's inner wall sealing block (305) is also provided with at least one test gas channels (6); Described lower end cover assembly (302) centrally axis run through the through hole being provided with the company's axle (310) with upper end cover assembly (301) and mating, even axle (310) is from top to bottom through the center through hole of lower end cover assembly (302), and fix with one piece of web plate (306), lower end cover assembly (302) is limited between upper end cover (307) and web plate (306) slidably;All being provided with oblique outer edge on described upper end cover (307) and lower end cover (309) phase opposite, two oblique outer edges form the spacing squeezing groove of sealing-ring, are provided with mouth seal of tube circle (308) in spacing squeezing groove; An annular sealing-ring locating slot is offered around center axis in the upper surface of described supervisor's inner wall sealing block (305), in sealing-ring locating slot, is provided with supervisor's inner wall sealing circle (311); Described supervisor's inner wall sealing block (305) outer sheath is provided with pressure ring assembly (303), described pressure ring assembly (303) downside upside-down mounting has some plugs to play bolt (313), bolt (313) played by plug, and to run through web plate (306) and pressure ring assembly (303) fixing, web plate (306) and plug are beaten and are slidably connected between bolt (313), and the plug between web plate (306) and pressure ring assembly (303) is beaten and is arranged with spring (312) on bolt (313); Described lower end cover assembly (302) is connected with end cap driving mechanism (304) through web plate (306) by some connecting rods (314), and end cap driving mechanism (304) is positioned in the back up pad (404) of delivery device (4).
2. the automatic sealing property testing apparatus of a kind of welding Y-junction according to claim 1, it is characterized in that: described pressure ring assembly (303) upper surface is the cambered surface mated with threeway supervisor's inwall, not testing state, pressure ring assembly (303) upper surface is higher than supervisor's inner wall sealing block (305) upper surface.
3. the automatic sealing property testing apparatus of a kind of welding Y-junction according to claim 1, it is characterised in that: the lower surface of described back up pad (404) is the cambered surface mated with threeway supervisor's inwall.
4. the automatic sealing property testing apparatus of a kind of welding Y-junction according to claim 1, it is characterised in that: the oblique outer edge on described upper end cover (307) and lower end cover (309) phase opposite is all the chamfering of 45 °.
5. according to the automatic sealing property testing apparatus of a kind of welding Y-junction described in any claim in Claims 1-4, it is characterised in that: described back up pad driving mechanism (402) and end cap driving mechanism (304) they are all cylinders.
CN201610191081.7A 2016-03-30 2016-03-30 A kind of automatic-sealed performance test apparatus of welding three-way connection CN105675233B (en)

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CN201610191081.7A CN105675233B (en) 2016-03-30 2016-03-30 A kind of automatic-sealed performance test apparatus of welding three-way connection

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Application Number Priority Date Filing Date Title
CN201610191081.7A CN105675233B (en) 2016-03-30 2016-03-30 A kind of automatic-sealed performance test apparatus of welding three-way connection

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CN105675233B CN105675233B (en) 2017-12-19

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5076095A (en) * 1990-05-25 1991-12-31 Erhardt Rick D Plumbing leak testing apparatus
FR2681124A1 (en) * 1991-09-06 1993-03-12 Oster Jean Pierre Device for detecting leaks in buried structures for storing or conveying sulphuric acid by pipeline
US5540083A (en) * 1993-12-22 1996-07-30 Toyoda Gosei Co., Ltd. Leakage measuring apparatus
US20070125531A1 (en) * 2004-03-12 2007-06-07 Stinger Wellhead Protection, Inc. Wellhead and control stack pressure test plug tool
CN203287165U (en) * 2013-06-08 2013-11-13 泰州市汇恒制冷设备有限公司 Leakage detection device for three-way
CN204575253U (en) * 2015-03-12 2015-08-19 浙江波士特机械有限公司 Joint air tightness test automatic connector
CN204964123U (en) * 2015-07-24 2016-01-13 杭州欣卓科技有限公司 PE tee bend test machine
CN205426450U (en) * 2016-03-30 2016-08-03 王国良 Butt fusion three way connection's self sealing capability test equipment

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5076095A (en) * 1990-05-25 1991-12-31 Erhardt Rick D Plumbing leak testing apparatus
FR2681124A1 (en) * 1991-09-06 1993-03-12 Oster Jean Pierre Device for detecting leaks in buried structures for storing or conveying sulphuric acid by pipeline
US5540083A (en) * 1993-12-22 1996-07-30 Toyoda Gosei Co., Ltd. Leakage measuring apparatus
US20070125531A1 (en) * 2004-03-12 2007-06-07 Stinger Wellhead Protection, Inc. Wellhead and control stack pressure test plug tool
CN203287165U (en) * 2013-06-08 2013-11-13 泰州市汇恒制冷设备有限公司 Leakage detection device for three-way
CN204575253U (en) * 2015-03-12 2015-08-19 浙江波士特机械有限公司 Joint air tightness test automatic connector
CN204964123U (en) * 2015-07-24 2016-01-13 杭州欣卓科技有限公司 PE tee bend test machine
CN205426450U (en) * 2016-03-30 2016-08-03 王国良 Butt fusion three way connection's self sealing capability test equipment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
陈秉章: "微型计算机在检测三通阀漏泄应用方面的研究", 《铁道车辆》 *

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Effective date of registration: 20181213

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Patentee before: Wang Guoliang

Effective date of registration: 20181213

Address after: 214500 No. 23 Dajue North Road, Xieqiao Town, Jingjiang City, Taizhou City, Jiangsu Province

Patentee after: Jingjiang Nanzheng Machinery Technology Co., Ltd.

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