CN105699025A - Sealing performance testing machine for welding joining part of tee joint - Google Patents

Sealing performance testing machine for welding joining part of tee joint Download PDF

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Publication number
CN105699025A
CN105699025A CN201610191286.5A CN201610191286A CN105699025A CN 105699025 A CN105699025 A CN 105699025A CN 201610191286 A CN201610191286 A CN 201610191286A CN 105699025 A CN105699025 A CN 105699025A
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CN
China
Prior art keywords
cover
sealing
gripper shoe
performance testing
testing machine
Prior art date
Application number
CN201610191286.5A
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Chinese (zh)
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CN105699025B (en
Inventor
王国良
王楠
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王国良
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Priority to CN201610191286.5A priority Critical patent/CN105699025B/en
Publication of CN105699025A publication Critical patent/CN105699025A/en
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Publication of CN105699025B publication Critical patent/CN105699025B/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 a sealing performance testing machine for a welding joining part of a tee joint. The sealing performance testing machine relates to the field of a sealing performance testing machine and comprises a base. The base is provided with a tee joint positioning mechanism, a sealing performance testing mechanism and a pushing mechanism for the sealing performance testing mechanism. For settling the problems of relatively large inner chamber and no easy determination for micro leakage by an air pressure sensor caused by outlet blocking in a large-size tee joint, the invention provides the sealing performance testing machine which enters the inner part of the tee joint and has advantages of realizing sealing for aiming at the welding joining part, reducing the testing chamber and improving sensitivity of the air pressure sensor.

Description

A kind of weld sealing performance testing machine of three way cock
Technical field
The present invention relates to sealing performance testing machine field, particularly relate to the weld sealing performance testing machine of a kind of three way cock。
Background technology
Three way cock, as pipe fitting, conduit coupling, is commonly used in main pipeline and wants branched pipe place, for medium shunt。The mouth pipe of industrial PE (polyethylene) three way cock forms typically by pipe fitting welding, and weld because of reasons such as fusion temp, docking out-of-flatnesses, leakage situation may occur, and three way cock reveals and is concentrated in weld。And it is as the important conduit coupling of gas ductwork, occur that leakage has bigger potential safety hazard, require before therefore using to carry out experiments of sealing performance for medium compressing gas。
At present, three way cock carries out experiments of sealing performance and generally adopts blister method and baroceptor monitoring method, adopt baroceptor monitoring method, often three outlets of three way cock are blocked, internal cavities is pressurized to pressurize after preset value, air pressure inside change is monitored, it is judged that whether cavity internal gas pressure reduces, and draws the result whether threeway leaks by baroceptor。But some three way cock's volume is relatively big, if only blocked in three exits of three way cock, internal cavities can be relatively big, and minute leakage is less on the impact of air pressure inside, and baroceptor is susceptible to erroneous judgement。
Summary of the invention
The present invention is to solve that big model three way cock adopts exit to block, internal cavities is bigger, the problem that baroceptor not easily judges micro-leakage, it is proposed to inside a kind of three way cock of stretching into, for weld sealing, the sealing performance testing machine reducing test cavity, raising baroceptor sensitivity。
To achieve these goals, the present invention is by the following technical solutions: the weld sealing performance testing machine of a kind of three way cock, including a base, described base is provided with the delivery device of the detent mechanism of a three way cock, a sealing performance testing machine structure and sealing performance testing machine structure;
Described detent mechanism is a laterally disposed cylinder, the internal diameter of cylinder mates with supervisor's external diameter of three way cock, offer a mouth pipe locating slot of a three way cock 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 includes limiting plate, gripper shoe, sliding track mechanism and gripper shoe 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, it is vertically arranged with cylinder, limiting plate is fixed with gripper shoe towards cylinder side, opposite side is connected with gripper shoe driving mechanism, and gripper shoe is pushed by gripper shoe driving mechanism can extend cylinder interior, and described gripper shoe is provided with sealing performance testing machine structure;
Described sealing performance testing machine structure at least includes upper end cover assembly, bottom end cover assembly, pressure ring assembly and end cap driving mechanism;Described upper end cover assembly is divided into upper end cover and connecting shaft, described upper end cover and connecting shaft to be all cylinder and central axes, along central axis section view in " T " font;Described bottom end cover assembly is followed successively by bottom end cover, connecting portion and supervisor's inner wall sealing block from top to bottom, bottom end cover is and the cylinder of the external diameters such as upper end cover, bottom end cover lower surface is connected by the upper surface of connecting portion with supervisor's inner wall sealing block, supervisor's inner wall sealing block entirety is cylinder, upper surface is be responsible for, with threeway, the cambered surface that inwall mates, and bottom end cover and supervisor's inner wall sealing block central axes, it is I-shaped along central axis section view;Described supervisor's inner wall sealing block is additionally provided with at least one test gas channels;Described bottom end cover assembly runs through along central axis and is provided with the through hole that the connecting shaft with upper end cover assembly mates, connecting shaft is from top to bottom through the central through hole of bottom end cover assembly, and fix with one piece of connecting plate, bottom end cover assembly is limited between upper end cover and connecting plate slidably;Being designed with oblique outer edge on described upper end cover and bottom end cover opposite face, 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;The upper surface of described supervisor's inner wall sealing block offers an annular sealing ring locating slot around central axis, 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, plug is beaten bolt-through connecting plate and is fixed with pressure ring assembly, connecting plate and plug are beaten and are slidably connected between bolt, and the plug between connecting plate and pressure ring assembly is beaten and is arranged with spring on bolt;Described bottom end cover assembly is connected with end cap driving mechanism through connecting plate by some connecting rods, and end cap driving mechanism is positioned in the gripper shoe of delivery device;It is provided with relocation mechanism between described end cap driving mechanism and gripper shoe, described relocation mechanism includes one piece of base plate and one piece of flexible cushion block, fix with base plate bottom end cap driving mechanism, described flexible cushion block is arranged between base plate and gripper shoe, base plate and flexible cushion block are correspondingly arranged on some through holes, having plug to play bolt, to run through the through hole on base plate and flexible cushion block from top to bottom fixing on the supporting plate, fills in beat and is slidably connected between bolt and base plate。
As preferably, described pressure ring assembly upper surface is be responsible for, with threeway, the cambered surface that inwall mates, and in not test mode, pressure ring assembly upper surface is higher than supervisor's inner wall sealing block upper surface。
As preferably, the lower surface of described gripper shoe is be responsible for, with threeway, the cambered surface that inwall mates。
As preferably, described upper end cover and the oblique outer edge on bottom end cover opposite face are all the chamfering of 45 °。
As preferably, described flexible cushion block is silicagel pad。
As preferably, described gripper shoe driving mechanism and end cap driving mechanism are all cylinders。
Therefore, there is advantages that 1, test cavity can be reduced, improve measuring accuracy;2, automatic operation, testing efficiency are high;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 sectional view before sealing performance testing machine structure of the present invention uses。
Fig. 6 is sectional view during sealing performance testing machine structure of the present invention use。
Fig. 7 is the structural representation of relocation mechanism between end cap driving mechanism of the present invention and gripper shoe。
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 the another kind of structural representation in use procedure of the present invention。
1: base;2: detent mechanism;201: cylinder;202: a mouth pipe locating slot;3: sealing performance testing machine structure;301: upper end cover assembly;302: bottom end cover assembly;303: pressure ring assembly;304: end cap driving mechanism;305: supervisor's inner wall sealing block;306: connecting plate;307: upper end cover;308: a mouth seal of tube circle;309: bottom end cover;310: connecting shaft;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: gripper shoe driving mechanism;403: limiting plate;404: gripper shoe;405: flexible cushion block;406: base plate;5: three way cock;501: a mouth pipe;6: test gas channels;7: seal cavity;8: weld。
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiments, the present invention will be further described。
A kind of weld sealing performance testing machine of three way cock, as shown in Figure 1 and Figure 2, including a flat base 1, described base 1 is provided with 2, sealing performance testing machine structure 3 of detent mechanism of a three way cock 5 and the delivery device 4 of sealing performance testing machine structure 3。Detent mechanism 2 is used for placement and the location of three way cock 5, and sealing performance testing machine structure 3 is used for stretching into three way cock 5 and carries out sealing and testing sealing, and for being delivered to by sealing performance testing machine structure 3, three way cock 5 is internal determines position to delivery device 4。
Described detent mechanism 2 is a laterally disposed cylinder 201, the internal diameter of cylinder 201 mates with supervisor's external diameter of three way cock 5, cylinder 201 sidewall top side offers a mouth pipe locating slot 202 of a three way cock 5 along cylinder 201 direction, a described mouth pipe locating slot 202 is from cylinder 201 centre position 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 includes limiting plate 403, gripper shoe 404, sliding track mechanism 401 and gripper shoe driving mechanism 402, described sliding track mechanism 401 is two light linkages, arrange along cylinder 201 direction, described limiting plate 403 both sides are positioned on the slide block of sliding track mechanism 401, it is vertically arranged with cylinder 201, limiting plate 403 is fixed with gripper shoe 404 towards cylinder 201 side, opposite side is connected with gripper shoe driving mechanism 402, described gripper shoe driving mechanism 402 is cylinder, gripper shoe 404 is pushed by gripper shoe driving mechanism 402 can extend cylinder 201 inside, described gripper shoe 404 lower surface is be responsible for, with threeway, the cambered surface that inwall mates, inwall veneer sliding can be responsible for threeway, gripper shoe 404 is provided with sealing performance testing machine structure 3。
Described sealing performance testing machine structure 3 at least includes upper end cover assembly 301, bottom end cover assembly 302, pressure ring assembly 303, end cap driving mechanism 304, as shown in Figures 3 to 6。
Described upper end cover assembly 301 is divided into upper end cover 307 and connecting shaft 310, and described upper end cover 307 and connecting shaft 310 are all cylinder and central axes, along central axis section view in " T " font。
Described bottom end cover assembly 302 is followed successively by bottom end cover 309, connecting portion and supervisor's inner wall sealing block 305 from top to bottom, bottom end cover 309 is and the cylinder of upper end cover 307 external diameter such as grade, bottom end cover 309 lower surface is connected by the upper surface of connecting portion with supervisor's inner wall sealing block 305, supervisor's inner wall sealing block 305 is overall in cylinder, upper surface is be responsible for, with threeway, the cambered surface that inwall mates, and bottom end cover 309 and supervisor's inner wall sealing block 305 central axes, it is I-shaped along central axis section view;Described supervisor's inner wall sealing block 305 is additionally provided with two test gas channels 6, it is possible to be used for inflating, exitting, be connected with outside gas path test system。
Described bottom end cover assembly 302 runs through along central axis and is provided with the through hole that the connecting shaft 310 with upper end cover assembly 301 mates, connecting shaft 310 is from top to bottom through the central through hole of bottom end cover assembly 302, and fix with one piece of connecting plate 306, bottom end cover assembly 302 is limited between upper end cover 307 and connecting plate 306 slidably。
Described upper end cover 307 and bottom end cover 309 opposite face are designed 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 bottom end cover 309, fit with connecting plate 306 on the downside of bottom end cover assembly 302;The upper surface of described supervisor's inner wall sealing block 305 offers an annular sealing ring locating slot around central axis, 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 be responsible for, with threeway, the cambered surface that inwall mates, in not test mode, 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 connecting plate 306 fixing with pressure ring assembly 303, connecting plate 306 and plug are beaten and are slidably connected between bolt 313, and the plug between connecting plate 306 and pressure ring assembly 303 is beaten and is arranged with the spring 312 compressed on bolt 313。
Described bottom end cover assembly 302 is connected with end cap driving mechanism 304 through connecting 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 gripper shoe 404 of delivery device 4。
It is provided with relocation mechanism between described end cap driving mechanism 304 and gripper shoe 404, as shown in Figure 7, described relocation mechanism includes one piece of base plate 406 and one piece of flexible cushion block 405, described flexible cushion block 405 is silicagel pad, fix with base plate 406 bottom end cap driving mechanism 304, silicagel pad is arranged between base plate 406 and gripper shoe 404, base plate is arranged with four through holes on 406 4 angles, silicagel pad is correspondingly arranged with base plate 406 and also is provided with four through holes, have plug to play bolt 313 to run through the through hole in base plate 406 and silicagel pad from top to bottom and be fixed in gripper shoe 404, plug is beaten and is slidably connected between bolt 313 and base plate 406。When a mouth pipe 501 welding angle has deviation, base plate 406 just can be made floating by extruding silicagel pad and be adjusted, and the angle direction of fine setting sealing performance testing machine structure 3 adapts to prop up the angular deviation of mouth pipe 501。
During test, referring to Fig. 5 to Figure 10, first entering in cylinder 201 by three way cock 5 from mouth pipe locating slot 202 sidesway, a mouth pipe moves to innermost end location along a mouth pipe locating slot 202;Gripper shoe driving mechanism 402 pushes limiting plate 403 and moves, indirect Push gripper shoe 404 and sealing performance testing machine structure 3 enter in threeway supervisor from cylinder 201 other end, when limiting plate 403 is stopped by cylinder 201 end face, stopping mobile, sealing performance testing machine structure 3 is just mobile 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 connecting plate 306 and connecting plate 306 to move toward a mouth pipe orifice direction, upper end cover 307 and bottom end cover 309 first stretch into a mouth pipe orifice, end cap driving mechanism 304 continues to push, it is responsible for inwall laminating with three way cock 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 connecting plate 306, fixing connection again between connecting plate 306 and upper end cover assembly 301, upper end cover 307 also stops upper shifting;Bottom end cover 309 continues upper shifting, with upper end cover 307 extruding mouth seal of tube circle 308, prop up mouth seal of tube circle 308 to expand, with a mouth inside pipe wall gluing, sealing, if processing is accurately, now, be responsible for inner wall sealing block 305 upper surface supervisor's inner wall sealing circle 311 also just with three way cock 5 inwall fit crush seal;If processing has deviation, upper end cover 307 and bottom end cover 309 have been fitted or cannot extrude expansion mouth seal of tube circle 308 again, supervisor's inner wall sealing circle 311 is not also fitted with three way cock 5 inwall, then end cap driving mechanism 304 may proceed to push, now, bottom end cover 309 and upper end cover 307 move on another, connecting 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 crush seal of three way cock 5 inwall。When a mouth seal of tube circle 308 and a mouth inside pipe wall gluing, sealing, supervisor's inner wall sealing circle 311 and three way cock 5 inwall gluing, sealing, just define one between two sealing rings and seal cavity 7, and the weld 8 of three way cock 5 is exactly in this and seals on cavity 7 wall, so, just can pass through two the test gas channels 6 being responsible on inner wall sealing block 305, toward sealing pressurization, pressure release in cavity 7, weld 8 be carried out experiments of sealing performance。

Claims (6)

1. the weld sealing performance testing machine of a three way cock, including a base (1), it is characterised in that: described base (1) is provided with the delivery device (4) of the detent mechanism (2) of a three way cock (5), a sealing performance testing machine structure (3) and sealing performance testing machine structure (3);
Described detent mechanism (2) is a laterally disposed cylinder (201), the internal diameter of cylinder (201) mates with supervisor's external diameter of three way cock (5), offer mouth pipe locating slot (202) of a three way cock (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) includes limiting plate (403), gripper shoe (404), sliding track mechanism (401) and gripper shoe 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), it is vertically arranged with cylinder (201), limiting plate (403) is fixed with gripper shoe (404) towards cylinder (201) side, opposite side is connected with gripper shoe driving mechanism (402), gripper shoe (404) is pushed by gripper shoe driving mechanism (402) can extend cylinder (201) inside, described gripper shoe (404) is provided with sealing performance testing machine structure (3);
Described sealing performance testing machine structure (3) at least includes upper end cover assembly (301), bottom 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 connecting shaft (310), and described upper end cover (307) and connecting shaft (310) are all cylinder and central axes, along central axis section view in " T " font;Described bottom end cover assembly (302) is followed successively by bottom end cover (309), connecting portion and supervisor's inner wall sealing block (305) from top to bottom, bottom end cover (309) is and the cylinder of the external diameters such as upper end cover (307), bottom end cover (309) lower surface is connected by the upper surface of connecting portion with supervisor's inner wall sealing block (305), supervisor's inner wall sealing block (305) is overall in cylinder, upper surface is be responsible for, with threeway, the cambered surface that inwall mates, and bottom end cover (309) with supervisor inner wall sealing block (305) central axes, be I-shaped along central axis section view;Described supervisor's inner wall sealing block (305) is additionally provided with at least one test gas channels (6);Described bottom end cover assembly (302) runs through along central axis and is provided with the through hole that the connecting shaft (310) with upper end cover assembly (301) mates, connecting shaft (310) is from top to bottom through the central through hole of bottom end cover assembly (302), and fix with one piece of connecting plate (306), bottom end cover assembly (302) is limited between upper end cover (307) and connecting plate (306) slidably;Being designed with oblique outer edge on described upper end cover (307) and bottom end cover (309) opposite face, 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;The upper surface of described supervisor's inner wall sealing block (305) offers an annular sealing ring locating slot around central axis, 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 connecting plate (306) and pressure ring assembly (303) fixing, connecting plate (306) and plug are beaten and are slidably connected between bolt (313), and the plug between connecting plate (306) and pressure ring assembly (303) is beaten and is arranged with spring (312) on bolt (313);Described bottom end cover assembly (302) is connected with end cap driving mechanism (304) through connecting plate (306) by some connecting rods (314), and end cap driving mechanism (304) is positioned in the gripper shoe (404) of delivery device (4);
It is provided with relocation mechanism between described end cap driving mechanism (304) and gripper shoe (404), described relocation mechanism includes one piece of base plate (406) and one piece of flexible cushion block (405), end cap driving mechanism (304) bottom is fixed with base plate (406), described flexible cushion block (405) is arranged between base plate (406) and gripper shoe (404), base plate (406) and flexible cushion block (405) are correspondingly arranged on some through holes, through hole that bolt (313) runs through in base plate (406) and flexibility cushion block (405) from top to bottom is fixed in gripper shoe (404) to have plug to beat, plug is beaten and is slidably connected between bolt (313) and base plate (406)。
2. the weld sealing performance testing machine of a kind of three way cock according to claim 1, it is characterized in that: described pressure ring assembly (303) upper surface is be responsible for, with threeway, the cambered surface that inwall mates, in not test mode, pressure ring assembly (303) upper surface is higher than supervisor's inner wall sealing block (305) upper surface。
3. the weld sealing performance testing machine of a kind of three way cock according to claim 1, it is characterised in that: the lower surface of described gripper shoe (404) is be responsible for, with threeway, the cambered surface that inwall mates。
4. the weld sealing performance testing machine of a kind of three way cock according to claim 1, it is characterised in that: the oblique outer edge on described upper end cover (307) and bottom end cover (309) opposite face is all the chamfering of 45 °。
5. the weld sealing performance testing machine of a kind of three way cock according to claim 1, it is characterised in that: described flexible cushion block (405) is silicagel pad。
6. the weld sealing performance testing machine of a kind of three way cock according to any claim in claim 1 to 5, it is characterised in that: described gripper shoe driving mechanism (402) and end cap driving mechanism (304) they are all cylinders。
CN201610191286.5A 2016-03-30 2016-03-30 A kind of weld sealing performance testing machine of three-way connection CN105699025B (en)

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CN201610191286.5A CN105699025B (en) 2016-03-30 2016-03-30 A kind of weld sealing performance testing machine of three-way connection

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CN105699025B CN105699025B (en) 2018-02-23

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CN110207911A (en) * 2019-07-02 2019-09-06 中国计量大学上虞高等研究院有限公司 A kind of three-way connection air-tightness testing device

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