CN105841887B - A kind of automatic leak-checking apparatus of threeway - Google Patents

A kind of automatic leak-checking apparatus of threeway Download PDF

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Publication number
CN105841887B
CN105841887B CN201610190425.2A CN201610190425A CN105841887B CN 105841887 B CN105841887 B CN 105841887B CN 201610190425 A CN201610190425 A CN 201610190425A CN 105841887 B CN105841887 B CN 105841887B
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CN
China
Prior art keywords
plate
sealing
cover
support plate
threeway
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CN201610190425.2A
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Chinese (zh)
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CN105841887A (en
Inventor
梁耀劲
肖大宇
赵青根
Original Assignee
佛山市华禅能燃气设计有限公司
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Priority to CN201610190425.2A priority Critical patent/CN105841887B/en
Publication of CN105841887A publication Critical patent/CN105841887A/en
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Publication of CN105841887B publication Critical patent/CN105841887B/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

Abstract

The invention discloses a kind of automatic leak-checking apparatus of threeway, including a base, the base is equipped with the delivery device of the positioning seat of a three-way connection, a branch mouth pipe locating support, a sealing performance testing machine structure and sealing performance testing machine structure.The present invention is blocked to solve big model three-way connection using exit, internal cavities are larger, the problem of baroceptor is not easy to judge micro- leakage, proposes a kind of stretch into inside PE threeways, for weld sealing, the automatic leak-checking apparatus for reducing test cavity, improving baroceptor sensitivity.

Description

A kind of automatic leak-checking apparatus of threeway
Technical field
The present invention relates to the automatic dress that leaks hunting in sealing performance testing machine field, more particularly to a kind of PE three-way connections weld Put.
Background technology
Three-way connection is commonly used in main pipeline and wants at branched pipe, for medium shunt as pipe fitting, conduit coupling.Work Industry is formed with the branch mouth pipe of PE (polyethylene) three-way connection typically by pipe fitting welding, and weld may be because of welding temperature , there is leakage situation in the reasons such as degree, docking out-of-flatness, and three-way connection leakage is concentrated in weld.And it is as combustion gas The important conduit coupling of pipe network, appearance leakage has larger security risk, therefore is required using preceding using compressed gas as Jie Matter carries out experiments of sealing performance.
At present, three-way connection carries out experiments of sealing performance generally use bubble method and baroceptor monitoring method, using gas Pressure sensor monitors method, often three outlets of three-way connection is blocked, internal cavities are pressurized to pressurize after preset value, pass through Baroceptor monitoring air pressure inside change, judges whether air pressure reduces in cavity, draws the result whether threeway leaks.But Some three-way connection volumes are larger, if only blocked in three exits of three-way connection, internal cavities can be larger, small to let out The influence leaked to air pressure inside is smaller, and baroceptor is easily judged by accident.
The content of the invention
The present invention is blocked to solve big model three-way connection using exit, and internal cavities are larger, and baroceptor is not The problem of easily judging micro- leakage, proposes that one kind is stretched into inside PE threeways, for weld sealing, diminution test cavity, raising gas The automatic leak-checking apparatus of pressure sensor sensitivity.
To achieve these goals, the present invention uses following technical scheme:A kind of automatic leak-checking apparatus of threeway, including one Base, the base are equipped with the positioning seat, a branch mouth pipe locating support, a sealing performance test of a three-way connection The delivery device of mechanism and sealing performance testing machine structure;The positioning seat is horizontal positioned, opening outwardly U-shaped Block, the diameter of U-shaped piece of opening inner side circular arc are matched with supervisor's outside diameter of three-way connection;The branch mouth pipe locating support is positioned at fixed On front side of the seat of position, branch mouth pipe locating support upper end is an opening up U-shaped structure, U-shaped opening size and branch mouth pipe outside diameter Match somebody with somebody;The sealing performance testing machine structure and the delivery device of sealing performance testing machine structure are located on the upside of positioning seat, and described pushes away Mechanism is sent to include transfer plate, support plate, sliding track mechanism, support plate driving mechanism and limiting bracket, the sliding track mechanism is vertical Base both sides are arranged on, the transfer plate both sides are positioned on the sliding block of sliding track mechanism, and transfer plate is in horizontally disposed, transfer plate Downside is fixed with support plate, and upside is connected with support plate driving mechanism, support plate by support plate driving mechanism push can make on Lower movement, is stretched on the inside of three-way connection, is further fixed on a limiting bracket on the downside of the transfer plate, under the limiting bracket Hold and matched for a downward opening U-shaped structure, the U-shaped opening size of limiting bracket with branch mouth pipe outside diameter, the support plate On be additionally provided with sealing performance testing machine structure;
The sealing performance testing machine structure includes at least upper end cap assemblies, lower end cap assemblies, pressure ring assembly and end cap and drives Motivation structure;The upper end cap assemblies are divided into upper end cover and connecting shaft, and the upper end cover and connecting shaft are all in cylinder and central shaft Line overlaps, along central axis section view in T-shaped;The lower end cap assemblies be followed successively by from top to bottom bottom end cover, connecting portion, with And supervisor's inner wall sealing block, bottom end cover are the cylinder with the outside diameter such as upper end cover, bottom end cover lower face passes through connecting portion and supervisor The upper surface of inner wall sealing block is connected, and supervisor's inner wall sealing block is in integrally cylinder, and upper surface is to be responsible for inner wall with threeway to match Cambered surface, and bottom end cover with supervisor inner wall sealing block central axis overlap, be in I-shaped along central axis section view;The master At least one test gas channels are additionally provided with inside pipe wall sealing block;The lower end cap assemblies along central axis run through be equipped with The matched through hole of connecting shaft of upper end cap assemblies, connecting shaft pass through the central through hole of lower end cap assemblies from top to bottom, and are connected with one piece Plate is fixed, and lower end cap assemblies are slideably limited between upper end cover and connecting plate;The upper end cover and bottom end cover opposite face On be designed with oblique outer edge, two oblique outer edges form the spacing extruding groove of sealing ring, and branch mouth Guan Mi is equipped with spacing extruding groove Seal;An annular sealing ring locating slot is offered around central axis on the upper surface of supervisor's inner wall sealing block, Supervisor's inner wall sealing circle is equipped with sealing ring locating slot;Supervisor's inner wall sealing block outer sheath is equipped with pressure ring assembly, described Pressure ring assembly on the downside of upside-down mounting there are some plugs to play bolt, fill in and beat bolt-through connecting plate and fixed with pressure ring assembly, connecting plate and plug Beat bolt between be slidably connected, the plug between connecting plate and pressure ring assembly, which is beaten, is arranged with spring on bolt;The bottom end cover group Part is connected by some connecting rods through connecting plate with end cap driving mechanism, and end cap driving mechanism is positioned at the support plate of delivery device On.
Preferably, relocation mechanism is equipped between the end cap driving mechanism and support plate, the relocation mechanism bag One piece of bottom plate and one piece of flexible cushion block are included, end cap driving mechanism bottom is fixed with bottom plate, and the flexible cushion block is arranged on bottom plate Between support plate, some through holes are correspondingly arranged on bottom plate and flexible cushion block, have plug beat bolt from top to bottom through bottom plate with Through hole on flexible cushion block is fixed on the supporting plate, and bottom plate and plug are slidably connected between playing bolt.
Preferably, the flexible cushion block is silicagel pad.
Preferably, the pressure ring assembly upper surface is to be responsible for the matched cambered surface of inner wall with threeway, in not test mode, Pressure ring assembly upper surface is higher than supervisor's inner wall sealing block upper surface.
Preferably, the lower surface of the support plate is to be responsible for the matched cambered surface of inner wall with threeway.
Preferably, the oblique outer edge on the upper end cover and bottom end cover opposite face is all 45 ° of chamfering.
Preferably, the support plate driving mechanism and end cap driving mechanism is all cylinder.
Therefore, the present invention has the advantages that:1st, test cavity can be reduced, improves measuring accuracy;2nd, automate Running, testing efficiency are high;3rd, structure linkage is strong, low manufacture cost.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the structure diagram before present invention test.
Structure diagram when Fig. 3 is present invention test.
Fig. 4 is the structure diagram of sealing performance testing machine structure of the present invention.
Fig. 5 is the structure diagram of another angle of sealing performance testing machine structure of the present invention.
Fig. 6 is the sectional view before sealing performance testing machine structure use of the present invention.
Fig. 7 is sectional view when sealing performance testing machine structure of the present invention uses.
Fig. 8 is the structure diagram of relocation mechanism between end cap driving mechanism and support plate of the present invention.
1:Base;2:Positioning seat;3:Sealing performance testing machine structure;301:Upper end cap assemblies;302:Lower end cap assemblies;303: Pressure ring assembly;304:End cap driving mechanism;305:It is responsible for inner wall sealing block;306:Connecting plate;307:Upper end cover;308:Branch mouth pipe Sealing ring;309:Bottom end cover;310:Connecting shaft;311:It is responsible for inner wall sealing circle;312:Spring;313:Plug plays bolt;314:Connecting rod; 4:Delivery device;401:Sliding track mechanism;402:Support plate driving mechanism;403:Transfer plate;404:Support plate;405:Spacing branch Frame;406:Bottom plate;407:Flexible cushion block;5:Three-way connection;501:Branch mouth pipe;6:Test gas channels;7:Sealing cavity;8:It is molten Meet place;9:Branch mouth pipe locating support.
Embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
A kind of automatic leak-checking apparatus of threeway, as shown in Figure 1 to Figure 3, including the base 1 that an entirety is L-shaped, it is described 2, branch mouth pipe locating supports of positioning seat, 9, the sealing performance testing machine structures 3 of base 1 equipped with a three-way connection 5, And the delivery device 4 of sealing performance testing machine structure 3.Positioning seat 2 is used for the placement and positioning of three-way connection 5, and sealing performance is surveyed Test-run a machine structure 3, which is used to stretch on the inside of three-way connection 5, is sealed and is tested leakproofness, and delivery device 4 is used to survey sealing performance Test-run a machine structure 3 send to the inside of three-way connection 5 and determines position.
The positioning seat 2 is horizontal positioned, opening outwardly U-shaped a piece, and U-shaped piece of height be 20cm, and U-shaped piece is open The diameter of inner arc is matched with supervisor's outside diameter of three-way connection 5.
The branch mouth pipe locating support 9 is located at the front side of positioning seat 2, and 9 upper end of branch mouth pipe locating support is an opening court On U-shaped structure, U-shaped opening size matches with 501 outside diameter of branch mouth pipe, and when three-way connection 5 is placed vertically, branch mouth pipe positioning branch The U-shaped opening height of frame 9 can just block the branch mouth pipe 501 of three-way connection 5.
The sealing performance testing machine structure 3 and the delivery device 4 of sealing performance testing machine structure 3 are located at the upside of positioning seat 2. The delivery device 4 includes transfer plate 403, support plate 404, sliding track mechanism 401, support plate driving mechanism 402 and spacing branch Frame 405, the sliding track mechanism 401 are Liang Gen polished rods mechanism, and polished rod mechanism is vertically symmetrical set in 1 liang of base Side, 403 both sides of transfer plate are positioned on the sliding block of sliding track mechanism 401, and transfer plate 403 is in horizontally disposed, transfer plate 403 Downside is fixed with support plate 404, and upside is connected with support plate driving mechanism 402, and the support plate driving mechanism 402 is gas Cylinder, support plate 404 can be moved up and down by the push of support plate driving mechanism 402, stretch into the inner side of three-way connection 5, the biography The downside of plate 403 is sent to be further fixed on a limiting bracket 405,405 lower end of limiting bracket is a downward opening U-shaped knot Structure, the U-shaped opening size of limiting bracket 405 are matched with 501 outside diameter of branch mouth pipe.When in 403 folding process of transfer plate, limiting bracket 405 U-shaped opening is stuck on branch mouth pipe 501, can be adjusted the direction of the opening of branch mouth pipe 501 and be limited under transfer plate 403 Move distance.Sealing performance testing machine structure 3 is additionally provided with the support plate 404.
The sealing performance testing machine structure 3 includes at least upper end cap assemblies 301, lower end cap assemblies 302, pressure ring assembly 303rd, end cap driving mechanism 304, as shown in Figures 4 to 7.
The upper end cap assemblies 301 divide for upper end cover 307 and connecting shaft 310, and the upper end cover 307 and connecting shaft 310 are all Overlapped in cylinder and central axis, along central axis section view in T-shaped.
The lower end cap assemblies 302 are followed successively by bottom end cover 309, connecting portion and supervisor's inner wall sealing block from top to bottom 305, bottom end cover 309 is the cylinder with the grade outside diameter of upper end cover 307, and 309 lower face of bottom end cover passes through connecting portion and supervisor's inner wall The upper surface of sealing block 305 is connected, and overall supervisor's inner wall sealing block 305 is in cylinder, and upper surface is to be responsible for inner wall with threeway The cambered surface matched somebody with somebody, and bottom end cover 309 is overlapped with supervisor's 305 central axis of inner wall sealing block, is in I-shaped along central axis section view; Two test gas channels 6 are additionally provided with supervisor's inner wall sealing block 305, can be used in inflating, deflate, with exterior gas Path test system is connected.
The lower end cap assemblies 302 run through equipped with matched logical with the connecting shaft 310 of upper end cap assemblies 301 along central axis Hole, connecting shaft 310 pass through the central through hole of lower end cap assemblies 302 from top to bottom, and are fixed with one piece of connecting plate 306, bottom end cover group Part 302 is slideably limited between upper end cover 307 and connecting plate 306.
The oblique outer edge of chamfering at 45 ° is designed with 309 opposite face of upper end cover 307 and bottom end cover, two tiltedly outer Edge forms the spacing extruding groove of sealing ring, is equipped with branch mouth seal of tube circle 308 in spacing extruding groove, therefore, upper end cover 307 is with It is in separation trend between end cap 309, the downside of lower end cap assemblies 302 is bonded with connecting plate 306;Supervisor's inner wall sealing block An annular sealing ring locating slot is offered around central axis on 305 upper surface, supervisor is equipped with sealing ring locating slot Inner wall sealing circle 311.
305 outer sheath of supervisor's inner wall sealing block is equipped with pressure ring assembly 303,303 upper surface of pressure ring assembly To be responsible for the matched cambered surface of inner wall with threeway, in not test mode, 303 upper surface of pressure ring assembly is higher than supervisor's inner wall sealing block 305 upper surfaces, 303 downside upside-down mounting of pressure ring assembly have four plugs to play bolt 313, and plug plays bolt 313 and runs through connecting plate 306 and pressure ring Component 303 is fixed, and connecting plate 306 and plug are beaten between bolt 313 and be slidably connected, the plug between connecting plate 306 and pressure ring assembly 303 Beat on bolt 313 and be arranged with the spring 312 compressed.
The lower end cap assemblies 302 are connected by four connecting rods 314 through connecting plate 306 with end cap driving mechanism 304, The end cap driving mechanism 304 is twin shaft cylinder, and the cylinder body of cylinder is positioned in the support plate 404 of delivery device 4.
The central axis of upper and lower end-cap assembly is overlapped with limiting bracket 405U type opening inner sides center of arc axis so that is propped up When mouth pipe 501 is stuck on the inside of the U-shaped opening of limiting bracket 405, upper end cover 307 and bottom end cover 309 can be with 501 endoporus pair of branch mouth pipe It is accurate.
Relocation mechanism is equipped between the end cap driving mechanism 304 and support plate 404, as shown in figure 8, the floating Mechanism includes the flexible cushion block 407 of one piece of bottom plate 406 and one piece, and the flexible cushion block 407 is silicagel pad, end cap driving mechanism 304 bottoms are fixed with bottom plate 406, and silicagel pad is arranged between bottom plate 406 and support plate 404, and bottom plate is symmetrically set on 406 4 angles There are four through holes, be correspondingly arranged in silicagel pad with bottom plate 406 and also be provided with four through holes, there is plug to play bolt 313 and run through from top to bottom Through hole on bottom plate 406 and silicagel pad is fixed in support plate 404, and plug, which is beaten between bolt 313 and bottom plate 406, to be slidably connected.When When 501 welding angle of branch mouth pipe has deviation, bottom plate 406 just can make floating adjustment by extruding silicagel pad, finely tune sealing performance The angle direction of mechanism for testing 3, adapts to the angular deviation of branch mouth pipe 501.
During test, referring to Fig. 1, Fig. 2, Fig. 3, Fig. 6, Fig. 7, three-way connection 5 is first placed on to the positioning seat 2 of base 1 vertically In opening, supervisor's outer wall is close to 2 opening inner side of positioning seat, and branch mouth pipe 501 is open outwardly, and frame is in 9 upper end of branch mouth pipe locating support U-shaped opening in, support plate driving mechanism 402 pushes transfer plate 403 and moves down, and indirect Push support plate 404 and sealing performance are surveyed Test-run a machine structure 3 enters in threeway supervisor from upper end tube nozzle, when the U-shaped opening of limiting bracket 405 is stuck on branch mouth pipe 501, Ji Nengzai The opening direction of branch mouth pipe 501 under secondary adjustment, again limits transfer plate 403 and continues to move down.At this time, sealing performance testing machine structure 3 Just it is displaced downwardly to branch mouth pipe orifice corresponding direction.Start end cap driving mechanism 304, end cap driving mechanism 304 promotes connecting plate 306 And all components in the upside of connecting plate 306 are moved toward branch mouth pipe orifice direction, upper end cover 307 and bottom end cover 309 first stretch into branch mouth pipe Endoporus, end cap driving mechanism 304 continue to push, and are bonded, stop with the supervisor's inner wall of three-way connection 5 when pressure ring assembly 303 is moved forward to Reach, due to there is compression spring 312 to connect between pressure ring assembly 303 and connecting plate 306, connecting plate 306 and upper end cap assemblies 301 Between again be fixedly connected, upper end cover 307 also stops move forward;Bottom end cover 309 continues to move forward, and branch mouth Guan Mi is extruded with upper end cover 307 Seal 308, branch mouth seal of tube circle 308 are expanded, and with branch mouth inside pipe wall gluing, sealing, if processing is accurate, at this time, supervisor's inner wall is close Supervisor's inner wall sealing circle 311 of 305 upper surface of envelope block is also just bonded crush seal with 5 inner wall of three-way connection;If it is machined with Deviation, upper end cover 307 and bottom end cover 309 have been bonded or can not extrude again expansion branch mouth seal of tube circle 308, and supervisor's inner wall is close Seal 311 is not bonded also with 5 inner wall of three-way connection, then end cap driving mechanism 304 may proceed to push, at this time, bottom end cover 309 and upper Another reach of end cap 307, connecting plate 306 also will be shifted up the spring 312 between compression and pressure ring assembly 303, until in supervisor Supervisor's inner wall sealing circle 311 of 305 upper surface of wall sealing block is bonded crush seal with 5 inner wall of three-way connection.When the branch mouth seal of tube Circle 308 and branch mouth inside pipe wall gluing, sealing, supervisor's inner wall sealing circle 311 and 5 inner wall gluing, sealing of three-way connection, two sealing rings Between just form a sealing cavity 7, and the weld 8 of three-way connection 5 is exactly on this 7 wall of sealing cavity, in this way, Just gas channels 6 can be tested by two be responsible on inner wall sealing block 305, toward the interior pressurization of sealing cavity 7, pressure release, to welding Place 8 carries out experiments of sealing performance.

Claims (7)

1. a kind of automatic leak-checking apparatus of threeway, including a base(1), it is characterised in that:The base(1)It is equipped with one Three-way connection(5)Positioning seat(2), a branch mouth pipe locating support(9), a sealing performance testing machine structure(3)And sealing Performance test mechanism(3)Delivery device(4);
The positioning seat(2)For horizontal positioned, opening outwardly U-shaped a piece, the diameter and three of U-shaped piece of opening inner side circular arc Pass joint(5)Supervisor's outside diameter matching;
The branch mouth pipe locating support(9)Positioned at positioning seat(2)Front side, branch mouth pipe locating support(9)Upper end is an opening U-shaped structure upward, U-shaped opening size and branch mouth pipe(501)Outside diameter matches;
The sealing performance testing machine structure(3)With sealing performance testing machine structure(3)Delivery device(4)Positioned at positioning seat(2) Upside, the delivery device(4)Including transfer plate(403), support plate(404), sliding track mechanism(401), support plate driving machine Structure(402)And limiting bracket(405), the sliding track mechanism(401)It is vertically arranged in base(1)Both sides, the transfer plate (403)Both sides are positioned at sliding track mechanism(401)Sliding block on, transfer plate(403)In horizontally disposed, transfer plate(403)Downside is consolidated Surely there is support plate(404), upside and support plate driving mechanism(402)It is connected, support plate(404)Pass through support plate driving mechanism (402)Push can move up and down, and stretch into three-way connection(5)Inner side, the transfer plate(403)Downside is further fixed on a limit Position stent(405), the limiting bracket(405)Lower end is a downward opening U-shaped structure, limiting bracket(405)It is U-shaped Opening size and branch mouth pipe(501)Outside diameter matches, the support plate(404)On be additionally provided with sealing performance testing machine structure(3);
The sealing performance testing machine structure(3)Including at least upper end cap assemblies(301), lower end cap assemblies(302), pressure ring assembly (303)With end cap driving mechanism(304);The upper end cap assemblies(301)It is divided into upper end cover(307)And connecting shaft(310), it is described Upper end cover(307)And connecting shaft(310)All overlapped in cylinder and central axis, along central axis section view in T-shaped;It is described Lower end cap assemblies(302)Bottom end cover is followed successively by from top to bottom(309), connecting portion and supervisor inner wall sealing block(305), under End cap(309)For with upper end cover(307)Deng the cylinder of outside diameter, bottom end cover(309)Lower face passes through connecting portion and supervisor's inner wall Sealing block(305)Upper surface be connected, be responsible for inner wall sealing block(305)Overall be in cylinder, and upper surface is in being responsible for threeway The matched cambered surface of wall, and bottom end cover(309)With being responsible for inner wall sealing block(305)Central axis overlaps, and is in along central axis section view I-shaped;Supervisor's inner wall sealing block(305)On be additionally provided with least one test gas channels(6);The lower end Cap assemblies(302)Run through along central axis and be equipped with and upper end cap assemblies(301)Connecting shaft(310)Matched through hole, connecting shaft(310) Lower end cap assemblies are passed through from top to bottom(302)Central through hole, and with one piece of connecting plate(306)It is fixed, lower end cap assemblies(302) Slideably it is limited in upper end cover(307)And connecting plate(306)Between;The upper end cover(307)And bottom end cover(309)Relatively Oblique outer edge is designed with face, two oblique outer edges form the spacing extruding groove of sealing ring, branch mouth pipe is equipped with spacing extruding groove Sealing ring(308);Supervisor's inner wall sealing block(305)Upper surface on around central axis offer one it is annular close Seal locating slot, sealing ring locating slot is interior to be equipped with supervisor's inner wall sealing circle(311);Supervisor's inner wall sealing block(305)Outside Side is arranged with pressure ring assembly(303), the pressure ring assembly(303)Downside upside-down mounting has some plugs to play bolt(313), fill in and play bolt (313)Through connecting plate(306)With pressure ring assembly(303)It is fixed, connecting plate(306)Bolt is played with plug(313)Between slide connect Connect, connecting plate(306)And pressure ring assembly(303)Between plug play bolt(313)On be arranged with spring(312);The lower end Cap assemblies(302)Pass through some connecting rods(314)Through connecting plate(306)With end cap driving mechanism(304)It is connected, end cap driving machine Structure(304)It is positioned at delivery device(4)Support plate(404)On.
A kind of 2. automatic leak-checking apparatus of threeway according to claim 1, it is characterised in that:The end cap driving mechanism (304)And support plate(404)Between be equipped with relocation mechanism, the relocation mechanism includes one piece of bottom plate(406)With one piece of flexibility Cushion block(407), end cap driving mechanism(304)Bottom and bottom plate(406)Fixed, described flexible cushion block(407)It is arranged on bottom plate (406)With support plate(404)Between, bottom plate(406)With flexible cushion block(407)On be correspondingly arranged on some through holes, have plug beat spiral shell Bolt(313)Run through bottom plate from top to bottom(406)With flexible cushion block(407)On through hole be fixed on support plate(404)On, bottom plate (406)Bolt is played with plug(313)Between be slidably connected.
A kind of 3. automatic leak-checking apparatus of threeway according to claim 2, it is characterised in that:The flexible cushion block (407)For silicagel pad.
A kind of 4. automatic leak-checking apparatus of threeway according to claim 1, it is characterised in that:The pressure ring assembly (303)Upper surface is to be responsible for the matched cambered surface of inner wall with threeway, in not test mode, pressure ring assembly(303)Upper surface is higher than master Inside pipe wall sealing block(305)Upper surface.
A kind of 5. automatic leak-checking apparatus of threeway according to claim 1, it is characterised in that:The support plate(404) Lower surface be and threeway be responsible for the matched cambered surface of inner wall.
A kind of 6. automatic leak-checking apparatus of threeway according to claim 1, it is characterised in that:The upper end cover(307) And bottom end cover(309)Oblique outer edge on opposite face is all 45 ° of chamfering.
A kind of 7. automatic leak-checking apparatus of threeway according to any claim in claim 1 to 6, it is characterised in that: The support plate driving mechanism(402)With end cap driving mechanism(304)All it is cylinder.
CN201610190425.2A 2016-03-30 2016-03-30 A kind of automatic leak-checking apparatus of threeway CN105841887B (en)

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