CN109470429A - A kind of PE ball valve detection device - Google Patents

A kind of PE ball valve detection device Download PDF

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Publication number
CN109470429A
CN109470429A CN201811446778.XA CN201811446778A CN109470429A CN 109470429 A CN109470429 A CN 109470429A CN 201811446778 A CN201811446778 A CN 201811446778A CN 109470429 A CN109470429 A CN 109470429A
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CN
China
Prior art keywords
piston
sleeve
locking bar
hole
sealing
Prior art date
Application number
CN201811446778.XA
Other languages
Chinese (zh)
Inventor
秦飞
Original Assignee
秦飞
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 秦飞 filed Critical 秦飞
Priority to CN201811446778.XA priority Critical patent/CN109470429A/en
Publication of CN109470429A publication Critical patent/CN109470429A/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

Abstract

The invention discloses a kind of PE ball valve detection devices, including sleeve, push away column and two big basic rings being set on sleeve;Described sleeve one end is arranged with fixing limit ring, and the sleeve other end is equipped with sealing plate, is equipped with second piston in sleeve, second piston connection pushes away column, pushes away column equipped with interior post holes and table card slot, table card slot is equipped with pressure gauge, first pressure is intracavitary to be equipped with reset spring, and first piston is equipped with head part;The fixing limit ring, which is equipped with, determines locking hole and U-shape lock bar, and dynamic stop collar is equipped with the dynamic locking hole that the second locking bar can be allowed to be inserted into, and lock stops axially bored line and is parallel to dynamic locking hole.The beneficial effects of the present invention are: being sealed property of weld test effectively to PE natural gas tube and electro-fusion sleeve, easy to operate, testing cost is low, test result accuracy is good, can judge welding effect on the spot;Electro-fusion sleeve pipe end is contacted using gag lever post, it is ensured that the present invention is in reasonable position, ensures the accuracy of testing result.

Description

A kind of PE ball valve detection device

Technical field

The invention belongs to valve technology field more particularly to a kind of PE ball valve detection devices.

Background technique

PE gas pipeline has obtained very extensive application in natural gas transportation field.In PE gas pipeline, PE ball The structures such as valve, electro-fusion sleeve, PE natural gas tube are all the structures that can be largely used, and PE natural gas tube is main conduit line, PE ball Valve is for controlling certain section of pipeline on-off, and electro-fusion sleeve is then used for the connection between pipeline structure, this is because in PE natural gas tube Lu Zhong, most commonly used connection type are thermal welding (resultant effect are best), this just needs to realize hot melt using electro-fusion sleeve It connects.

Electro-fusion sleeve belongs to the prior art in PE pipe valve field comprising PE tube body and the heating for being laid in PE tube body internal layer Resistance wire is additionally provided with two electrodes on PE tube body, and an electrode is connect with resistive heater one end, another electrode and heating electricity The connection of the silk other end is hindered, for example, covering electro-fusion sleeve in PE ball valve when needing for electro-fusion sleeve and PE ball valve to be attached On valve adapter tube, fuse machine is powered to two electrodes and is formed into a loop, resistive heater fever, the electric smelting set near resistive heater Inside pipe wall and valve adapter tube outer wall melt, and then stop being powered, and the part cooling and solidifying of thawing is fused together, that is, realize (thermal welding) is docked in PE ball valve and electro-fusion sleeve.

But, after PE ball valve and electro-fusion sleeve thermal welding, do not have also to the leakproofness of weld at present quickly and effectively Detection method, therefore cannot judge welding effect on the spot, there are risk of leakage.

Summary of the invention

Structurally reasonable, easy to operate the present invention provides a kind of PE ball valve detection device, when test, can not be by additional Power-equipment, can effectively to PE ball valve and electro-fusion sleeve being sealed property of weld test, can get accurately test knot Fruit and test process time-consuming is short.

To achieve the goals above, the invention adopts the following technical scheme:

A kind of PE ball valve detection device,

Including sleeve, push away column and two big basic rings being set on sleeve;

Described sleeve one end is arranged with fixing limit ring, pushes away column and is equipped with dynamic stop collar for contacting fixing limit ring, on big basic ring Equipped with the big gas-flow closure circle that can seal cooperation with electro-fusion sleeve inner wall, moves stop collar and connect equipped with several with the sliding of fixing limit ring The guide rod connect, guide rod are fixed with dynamic stop collar, and the guide rod other end is equipped with the spacing head for contacting fixing limit ring, fixing limit Ring is between dynamic stop collar and any spacing head;

The sleeve is equipped with sealing hole, sealing air flue and pressurized hole, big gas-flow closure circle communication seals air flue, sealing hole import End connection sleeve inner, sealing hole outlet end communication seals air flue, pressurized hole input end are connected to sleeve inner, pressurized hole outlet end It is connected to valve nozzle interior;

The sleeve other end is equipped with sealing plate, and the first piston of pressurized hole can be sealed and can seal the of sealing hole by being equipped in sleeve Two pistons, first piston and sleeve are slidingly sealed cooperation, and second piston and sleeve are slidingly sealed cooperation, and first piston is equipped with the One stomata, second piston are equipped with the second stomata, and second piston connection pushes away column, push away column equipped with interior post holes and for fixation pressure The table card slot of table, table card slot are in outside sleeve, and table card slot is equipped with pressure gauge, and the first pressure is formed between sealing plate and first piston Chamber, forms the second pressure chamber between first piston and second piston, the first intracavitary reset spring equipped with axis horizontal of pressure resets bullet Spring one end connects sealing plate, and the reset spring other end connects first piston, and first piston is equipped with the top for contacting second piston Part, it is intracavitary that head part is in the second pressure, upward pushing away axis of a cylinder: sealing plate, reset spring, first piston, head part, second piston and pushing away column It is sequentially arranged, the first pressure chamber, the first stomata, second press the test lead of chamber, the second stomata, interior post holes and pressure gauge to be sequentially communicated;

When sealing hole is connected to the second pressure chamber: reset spring is in nature, and first piston seals pressurized hole;

When second piston seals sealing hole and reset spring is in nature: first piston seals pressurized hole;

When pressurized hole is connected to the second pressure chamber: reset spring is in compressive state, and second piston contacts head part, second piston envelope Firmly sealing hole;

When dynamic stop collar contacts fixing limit ring: pressurized hole is connected to the second pressure chamber;

The fixing limit ring, which is equipped with, determines locking hole and U-shape lock bar, and U-shape lock bar includes the first locking bar, intermediate locking bar and the second lock Bar, the first lock are parallel to the second locking bar, and intermediate locking bar one end connects the first locking bar, and the intermediate locking bar other end connects the second locking bar, Perpendicular to the first locking bar, the first locking bar is inserted in be determined in locking hole intermediate locking bar, and dynamic stop collar, which is equipped with, can allow the second locking bar to be inserted into Dynamic locking hole, lock stops axially bored line and is parallel to dynamic locking hole, determines in locking hole and the second locking bar is inserted in when the first locking bar is inserted in When in dynamic locking hole: dynamic stop collar contact sleeve.

Preferably, second locking bar is equipped with bar slot far from one end of intermediate locking bar, it is equipped with interior magnetic patch in bar slot, second Locking bar arranges that interior magnetic patch bottom surface is flushed with the second locking bar lower end surface vertically, and sleeve lateral wall is equipped with can be mutually attracting with interior magnetic patch Attached outer magnetic patch, determine in locking hole and when interior magnetic patch is adsorbed on outer magnetic patch when the first locking bar is inserted in: the first locking bar is in outer magnetic Between block and dynamic stop collar.

Preferably, the head part includes rubber slab and several struts, second piston axis is perpendicular to rubber slab, strut one End connection first piston, the strut other end connect rubber slab, and rubber slab is between first piston and second piston, rubber slab It is equipped with multiple ventholes.

Preferably, the first piston is slidingly sealed cooperation by several first sealing rings and sleeve, on first piston Equipped with several and one-to-one first annular groove of the first sealing ring, the first sealing ring is arranged on corresponding first annular groove, and second Piston is slidingly sealed cooperation by several second sealing rings and sleeve, and second piston is equipped with several a pair of with the second sealing ring one The second annular groove answered, the second sealing ring are arranged on corresponding second annular groove.

Preferably, the sleeve lateral wall is equipped with deck ring, the centre bore of deck ring is connected to pressurized hole outlet end, The filter cotton block being clamped with deck ring is equipped in the centre bore of deck ring.

Preferably, the sleeve lateral wall is equipped with several for contacting the gag lever post of electro-fusion sleeve end, respectively limit Bar is circumferentially uniformly distributed along sleeve.

The beneficial effects of the present invention are: being sealed property of weld effectively to PE natural gas tube and electro-fusion sleeve survey Examination, easy to operate, testing cost is low, test result accuracy is good, can judge welding effect on the spot;Electricity is contacted using gag lever post Molten casing pipe end, it is ensured that the present invention is in reasonable position, ensures the accuracy of testing result.

Detailed description of the invention

Fig. 1 is structural schematic diagram of the invention;

Fig. 2 is the enlarged drawing in Fig. 1 at A;

Fig. 3 is the enlarged drawing in Fig. 1 at B;

Fig. 4 is the enlarged drawing in Fig. 1 at C;

Fig. 5 is the enlarged drawing in Fig. 1 at D;

Fig. 6 is the enlarged drawing in Fig. 1 at E;

Fig. 7 is the enlarged drawing in Fig. 4 at F;

Fig. 8 is the structural schematic diagram of U-shape lock bar of the present invention;

Fig. 9 is that the present invention pushes away the structural schematic diagram that column is under a certain state;

Figure 10 is the enlarged drawing in Fig. 9 at G;

Figure 11 is the enlarged drawing in Fig. 9 at H;

Figure 12 is the structural schematic diagram of the invention pushed away at column in the other state;

Figure 13 is the enlarged drawing in Figure 12 at I;

Figure 14 is the enlarged drawing in Figure 12 at J;

Figure 15 is the enlarged drawing in Figure 12 at K.

Appended drawing reference: sleeve 1, sealing hole 1a, sealing air flue 1b, pressurized hole 1c, sealing plate 11, first piston 12, the first gas Hole 12a, the first sealing ring 121, second piston 13, the second stomata 13a, the second sealing ring 131, reset spring 14, head part 15, rubber Offset plate 151, outer magnetic patch 16, deck ring 17, filter cotton block 171, gag lever post 18, pushes away column 2, interior post holes 2a, table card slot at strut 152 2b, big basic ring 3, big gas-flow closure circle 31, fixing limit ring 4, determine locking hole 4a, U-shape lock bar 41, the first locking bar 411, intermediate locking bar 412, the second locking bar 413, interior magnetic patch 42, dynamic stop collar 5, dynamic locking hole 5, dynamic locking hole 5a, guide rod 51, spacing head 52, PE ball Valve 6, valve seat 61, spool 62, valve rod 63, valve adapter tube 64, electro-fusion sleeve 7, resistive heater 71, electrode 72.

Specific embodiment

The present invention will be further described with reference to the accompanying drawings and detailed description.

Embodiment 1:

As shown in Fig. 1 to Figure 15,

A kind of PE ball valve detection device,

Including sleeve 1, push away column 2 and two big basic rings 3 being set on sleeve;

Described sleeve one end is arranged with fixing limit ring 4, pushes away column equipped with the dynamic stop collar 5 for contacting fixing limit ring, big basic ring It is equipped with the big gas-flow closure circle 31 that can seal cooperation with electro-fusion sleeve inner wall, moves stop collar equipped with several sliding with fixing limit ring The guide rod 51 of dynamic connection, guide rod are fixed with dynamic stop collar, and the guide rod other end is equipped with the spacing head for contacting fixing limit ring 52, fixing limit ring is between dynamic stop collar and any spacing head;

The sleeve is equipped with sealing hole 1a, sealing air flue 1b and pressurized hole 1c, big gas-flow closure circle communication seals air flue, sealing Hole input end is connected to sleeve inner, sealing hole outlet end communication seals air flue, and pressurized hole input end is connected to sleeve inner, pressurized hole Outlet end is connected to valve nozzle interior;

Described sleeve one end is equipped with sealing plate 11, and the first piston 12 that can seal pressurized hole is equipped in sleeve and can seal sealing hole Second piston 13, first piston and sleeve are slidingly sealed cooperation, and second piston and sleeve are slidingly sealed cooperation, set on first piston There is the first stomata 12a, second piston is equipped with the second stomata 13a, and second piston connection pushes away the column other end, pushes away column equipped with inner prop Hole 2a and table card slot 2b for fixation pressure table, table card slot are in outside sleeve, and table card slot is equipped with pressure gauge, sealing plate and first The first pressure chamber is formed between piston, forms the second pressure chamber between first piston and second piston, and the first pressure is intracavitary to be equipped with axis water Flat reset spring 14, reset spring one end connect sealing plate, and the reset spring other end connects first piston, and first piston is equipped with For contacting the head part 15 of second piston, it is intracavitary that head part is in the second pressure, upward pushing away axis of a cylinder: sealing plate, reset spring, first living It plug, head part, second piston and pushes away column and is sequentially arranged, the first pressure chamber, the first stomata, the second pressure chamber, the second stomata, interior post holes and pressure The test lead of power table is sequentially communicated;

When sealing hole is connected to the second pressure chamber: reset spring is in nature, and first piston seals pressurized hole;

When second piston seals sealing hole and reset spring is in nature: first piston seals pressurized hole;

When pressurized hole is connected to the second pressure chamber: reset spring is in compressive state, and second piston contacts head part, second piston envelope Firmly sealing hole;

When dynamic stop collar contacts fixing limit ring: pressurized hole is connected to the second pressure chamber;

The fixing limit ring, which is equipped with, determines locking hole 4a and U-shape lock bar 41, and U-shape lock bar includes the first locking bar 411, intermediate locking bar 412 and second locking bar 413, the first lock be parallel to the second locking bar, intermediate locking bar one end connects the first locking bar, the intermediate locking bar other end The second locking bar is connected, perpendicular to the first locking bar, the first locking bar is inserted in be determined in locking hole intermediate locking bar, and dynamic stop collar, which is equipped with, to be allowed The dynamic locking hole 5a of second locking bar insertion, lock stop axially bored line and are parallel to dynamic locking hole, determine in locking hole when the first locking bar is inserted in And second locking bar when being inserted in dynamic locking hole: dynamic stop collar contact sleeve.

PE ball valve 6 includes depicting one in valve seat 61, spool 62, valve rod 63 and two valve adapter tube 64(Fig. 1), valve Adapter tube is for carrying out welding with electro-fusion sleeve.

Spool is in closed state.

First electro-fusion sleeve set to valve is taken over, reaching position as shown in fig. 1, (electro-fusion sleeve and valve take over it at this time Between gently block) by the present invention merging PE ball valve (valve adapter tube) and electro-fusion sleeve, reach position as shown in fig. 1, at this time Positioning body contacts PE natural gas tube pipe end, and spacing head contacts fixing limit ring.

It is powered using fuse machine to resistive heater 71, makes its fever, carrying out thermal welding, (specific welding mode is in background skill Illustrated in art), after the completion of welding, weld cooling and solidifying.Then can inwardly push column, reset spring, first piston, It second piston and pushes away the structures such as column and reaches state in Figure 12 through state in Fig. 9 by state in Fig. 1, state reaches Fig. 9 in by Fig. 1 During middle state, second presses the sealed hole of intracavitary a part of gas, sealing air flue to be filled with big gas-flow closure circle, thus (position Inside PE ball valve and electro-fusion sleeve, it also is located at cartridge exterior and is located at the sky in Fig. 1 between spool and the large sealing packing ring in left side Between) seal chamber (i.e. test chamber) is formd, big gas-flow closure circle tightly pushes down electro-fusion sleeve inner wall at this time.

Continuation inwardly pushes away column, reaches state in Figure 12 by state in Fig. 9, moves stop collar and contacts fixing limit ring, the mistake Cheng Zhong, the first pressure intracavity gas enter test chamber through the second pressure chamber, pressurized hole, and air pressure rises in test chamber, pushes away column and keeps in Fig. 3 Position for a period of time (i.e. the dwell time, this can sets itself according to demand, generally remain 15 seconds or more), when pushing away at column In Figure 12 when position, the present invention is in state of pressure keeping.U-shape lock bar can be removed at this time, ought the first locking bar be inserted in and determine locking hole In and the second locking bar be inserted in dynamic locking hole.

Since detection intracavity gas is only possible to be leaked to extraneous (if weld leakproofness is qualified, detect by weld Intracavity gas will not be revealed, if weld leakproofness is unqualified, detecting intracavity gas can be revealed, so, into state of pressure keeping It (pushes away column to reach in Figure 12 behind position) afterwards, can start to observe pressure gauge numerical value, within the dwell time, if numerical value is unchanged or counts Value decline is no more than 2%(and expands with heat and contract with cold etc. various because can all numerical value be caused to decline, but is not caused by leakage, if due to letting out Dew, then numerical value decline can be very fast), then it is believed that qualified, weld is not revealed.Then it can make to push away column reset, push away column and resetted Cheng Zhong, a part of gas returns in sleeve in big gas-flow closure circle, so electro-fusion sleeve is no longer compressed in big gas-flow closure circle, this Invention can smoothly take out.

If leakproofness is unqualified, may be repaired welding, (PE is thermoplastic, so reheating using fuse machine Once, weld is allowed to melt again, cool and solidify) or the pipeline structure that more renews after removing.After reparation, the present invention can use Being sealed property detects again.

Second locking bar is equipped with bar slot far from one end of intermediate locking bar, and interior magnetic patch 42 is equipped in bar slot, and the second locking bar is perpendicular Straight arrangement, interior magnetic patch bottom surface are flushed with the second locking bar lower end surface, and sleeve lateral wall is outer equipped with what can be adsorbed mutually with interior magnetic patch Magnetic patch 16 is determined in locking hole and when interior magnetic patch is adsorbed on outer magnetic patch when the first locking bar is inserted in: the first locking bar be in outer magnetic patch with Between dynamic stop collar.When not using U-shape lock bar, the first locking bar can be inserted in and be determined in locking hole, interior magnetic patch is adsorbed on outer magnetic On block, it can avoid U-shape lock bar and shake, lose or interfere other structures mobile.

The head part includes rubber slab 151 and several struts 152, and second piston axis is perpendicular to rubber slab, strut one end First piston is connected, the strut other end connects rubber slab, and rubber slab is between first piston and second piston, on rubber slab Equipped with multiple ventholes.Rubber slab contacts second piston, can reduce the impact to second piston, avoid damage to second piston, more A venthole helps quickly to flow in internal gas.

The first piston is slidingly sealed cooperation by several first sealing rings and sleeve, first piston be equipped with it is several and One-to-one first annular groove of first sealing ring 121, the first sealing ring are arranged on corresponding first annular groove, and second piston passes through Several second sealing rings and sleeve are slidingly sealed cooperation, and second piston is equipped with several one-to-one with the second sealing ring 131 Second annular groove, the second sealing ring are arranged on corresponding second annular groove.Although being pointed out that second piston and sleeve lining Between with very little gap, but not influence detection process.In other words, definition between second piston and sleeve lining and The space being between the second sealing ring of any two is microgap, when pressurized hole is connected to microgap, meeting in sealing air flue There is minimal amount of gas to enter microgap, but too small due to measuring, thus do not influence small gas-flow closure circle, big gas-flow closure circle it is close Seal effect.Other similar situations are similarly.

The sleeve lateral wall is equipped with deck ring 17, and the centre bore of deck ring is connected to pressurized hole outlet end, deck ring Centre bore in be equipped with the filter cotton block 171 that is clamped with deck ring.Filter cotton block is arranged can be to avoid miscellaneous in air in valve Matter enters in sleeve, can extend service life of the present invention, ensures test effect.

The sleeve lateral wall is equipped with several gag lever posts 18 for being used to contact electro-fusion sleeve end, and each gag lever post is along sleeve Circumferentially it is uniformly distributed.Electro-fusion sleeve pipe end is contacted using gag lever post, it is ensured that the present invention is in reasonable position, ensures detection knot The accuracy of fruit.

Embodiment 2:

As shown in Fig. 1 to Figure 15,

A kind of PE ball valve detection method, including a kind of PE ball valve detection device as described in example 1 above, a kind of PE ball valve Detection device includes sleeve 1, pushes away column 2 and two big basic rings 3 being set on sleeve;Described sleeve one end is arranged with fixing limit ring 4, column is pushed away equipped with the dynamic stop collar 5 for contacting fixing limit ring, and big basic ring, which is equipped with to seal with electro-fusion sleeve inner wall, to be cooperated Big gas-flow closure circle 31, dynamic stop collar is equipped with several guide rods 51 being slidably connected with fixing limit ring, guide rod and dynamic limit Position ring is fixed, and the guide rod other end is equipped with spacing head 52 for contacting fixing limit ring, fixing limit ring be in dynamic stop collar with it is any Between spacing head;The sleeve is equipped with sealing hole 1a, sealing air flue 1b and pressurized hole 1c, big gas-flow closure circle communication seals gas Road, sealing hole input end are connected to sleeve inner, sealing hole outlet end communication seals air flue, and pressurized hole input end is connected in sleeve Portion, pressurized hole outlet end are connected to valve nozzle interior;Described sleeve one end is equipped with sealing plate 11, and pressurized hole can be sealed by being equipped in sleeve First piston 12 and the second piston 13 of sealing hole can be sealed, first piston and sleeve are slidingly sealed cooperation, second piston and Sleeve is slidingly sealed cooperation, and first piston is equipped with the first stomata 12a, and second piston is equipped with the second stomata 13a, second piston Connection pushes away the column other end, pushes away column and is in outside sleeve equipped with interior post holes 2a and the table card slot 2b for fixation pressure table, table card slot, Table card slot is equipped with pressure gauge, forms the first pressure chamber between sealing plate and first piston, is formed between first piston and second piston Second pressure chamber, the first intracavitary reset spring 14 equipped with axis horizontal of pressure, reset spring one end connect sealing plate, and reset spring is another End connection first piston, first piston are equipped with head part 15 for contacting second piston, and it is intracavitary that head part is in the second pressure, are pushing away Axis of a cylinder is upward: it sealing plate, reset spring, first piston, head part, second piston and pushes away column and is sequentially arranged, the first pressure chamber, the first gas Hole, second press the test lead of chamber, the second stomata, interior post holes and pressure gauge to be sequentially communicated;

Definition status A is when sealing hole is connected to the second pressure chamber: reset spring is in nature, and first piston seals pressurization Hole;Definition status B is when second piston seals sealing hole and reset spring is in nature: first piston seals pressurization Hole;Definition status C is when pressurized hole is connected to the second pressure chamber: reset spring is in compressive state, and second piston contacts head part, the Two pistons seal sealing hole;

When dynamic stop collar contacts fixing limit ring: pressurized hole is connected to the second pressure chamber;

The fixing limit ring, which is equipped with, determines locking hole 4a and U-shape lock bar 41, and U-shape lock bar includes the first locking bar 411, intermediate locking bar 412 and second locking bar 413, the first lock be parallel to the second locking bar, intermediate locking bar one end connects the first locking bar, the intermediate locking bar other end The second locking bar is connected, perpendicular to the first locking bar, the first locking bar is inserted in be determined in locking hole intermediate locking bar, and dynamic stop collar, which is equipped with, to be allowed The dynamic locking hole 5a of second locking bar insertion, lock stop axially bored line and are parallel to dynamic locking hole, determine in locking hole when the first locking bar is inserted in And second locking bar when being inserted in dynamic locking hole: dynamic stop collar contact sleeve;

Itself the following steps are included:

A. a sealing mechanism is placed in advance inside PE ball valve and electro-fusion sleeve, the sealing mechanism has can be with electro-fusion sleeve The sealing element of inner wall sealing cooperation, sealing element is arranged on a connector, after sealing mechanism is placed in advance, PE ball valve and electric smelting set Pipe to weld between spool and sealing element, sealing element be two big basic rings being set on sleeve and be arranged in big base Big gas-flow closure circle on ring, connector is sleeve;

B. PE ball valve and electro-fusion sleeve are subjected to welding to weld;

C. it allows spool to be in closed state, allows and seal cooperation between sealing element and electro-fusion sleeve inner wall, be located at PE ball valve and electric smelting Inside pipe casing, the space also being located at outside connector and between spool and sealing element form test chamber, this step method Realization process is as follows: inwardly pushing away column, makes to push away column towards sealing plate movement, state B is switched to by state A, second during being somebody's turn to do The sealed hole of intracavitary a part of gas, sealing air flue is pressed to be filled with big gas-flow closure circle, big gas-flow closure circle and electro-fusion sleeve inner wall Between seal cooperation, and form the test chamber;

D. it pressurizes to test chamber inner inflatable, test chamber air pressure inside is made to reach 1.03-1.22 times of atmospheric pressure, after the completion of pressurization, Test chamber internal gas is neither actively discharged, inflating pressure is not also continued, thus realize pressure maintaining, pressure maintaining 15 to 30 seconds, the pressure maintaining phase Between, simultaneously observed pressure table numerical value change is detected to air pressure is carried out in test chamber with the pressure gauge being connected to inside test chamber using one Change, the realization process of this step method is as follows: on the basis of step c, continuation inwardly pushes away column, makes to push away column towards sealing plate shifting It is dynamic, state C is switched to by state B, the first pressure intracavity gas enters test chamber through the second pressure chamber, pressurized hole during being somebody's turn to do, and detects Intracavitary air pressure rises to 1.03-1.22 times of atmospheric pressure, and state C is allowed to be kept for 15 to 60 seconds, observes pressure gauge during state C is kept Numerical value;

E. during pressure maintaining, if pressure gauge numerical value is unchanged or numerical value decline is no more than 2%, determine that weld leakproofness is qualified, During during pressure maintaining being the state C holding in step d.

It should be pointed out that state A, state B, state C are ranges, for example, being defined in step c by state A State B is switched to, second presses the sealed hole of intracavitary a part of gas, sealing air flue to be filled with big gas-flow closure circle during being somebody's turn to do, greatly Cooperation is sealed between gas-flow closure circle and electro-fusion sleeve inner wall, that is to say, that " present invention is in state as long as meeting condition at this time B, and meet " cooperation is sealed between big gas-flow closure circle and electro-fusion sleeve inner wall ", under this condition, each structure of the present invention All it is allowed in any position that can be in, does not emphasize that each structure of the present invention is had in which specific position, it is other Similar situation is similarly.

Preferably, big basic ring number is two in step a, the big gas-flow closure circle number being arranged on each big basic ring Mesh is one.

Preferably, selecting the time for allowing state C to keep is 20 seconds in step d.

PE ball valve 6 includes depicting one in valve seat 61, spool 62, valve rod 63 and two valve adapter tube 64(Fig. 1), valve Adapter tube is for carrying out welding with electro-fusion sleeve.

First electro-fusion sleeve set to valve is taken over, reaching position as shown in fig. 1, (electro-fusion sleeve and valve take over it at this time Between gently block) by the present invention merging PE ball valve (valve adapter tube) and electro-fusion sleeve, reach position as shown in fig. 1, at this time Positioning body contacts PE natural gas tube pipe end, and spacing head contacts fixing limit ring.

It is powered using fuse machine to resistive heater 71, makes its fever, carrying out thermal welding, (specific welding mode is in background skill Illustrated in art), after the completion of welding, weld cooling and solidifying.Then can inwardly push column, reset spring, first piston, It second piston and pushes away the structures such as column and reaches state in Figure 12 through state in Fig. 9 by state in Fig. 1, state reaches Fig. 9 in by Fig. 1 During middle state, second presses the sealed hole of intracavitary a part of gas, sealing air flue to be filled with big gas-flow closure circle, thus (position Inside PE ball valve and electro-fusion sleeve, it also is located at cartridge exterior and is located at the sky in Fig. 1 between spool and the large sealing packing ring in left side Between) seal chamber (i.e. test chamber) is formd, big gas-flow closure circle tightly pushes down electro-fusion sleeve inner wall at this time.

Continuation inwardly pushes away column, reaches state in Figure 12 by state in Fig. 9, moves stop collar and contacts fixing limit ring, the mistake Cheng Zhong, the first pressure intracavity gas enter test chamber through the second pressure chamber, pressurized hole, and air pressure rises in test chamber, pushes away column and keeps in Fig. 3 Position for a period of time (i.e. the dwell time, this can sets itself according to demand, generally remain 15 seconds or more), when pushing away at column In Figure 12 when position, the present invention is in state of pressure keeping.U-shape lock bar can be removed at this time, ought the first locking bar be inserted in and determine locking hole In and the second locking bar be inserted in dynamic locking hole.

Since detection intracavity gas is only possible to be leaked to extraneous (if weld leakproofness is qualified, detect by weld Intracavity gas will not be revealed, if weld leakproofness is unqualified, detecting intracavity gas can be revealed, so, into state of pressure keeping It (pushes away column to reach in Figure 12 behind position) afterwards, can start to observe pressure gauge numerical value, within the dwell time, if numerical value is unchanged or counts Value decline is no more than 2%(and expands with heat and contract with cold etc. various because can all numerical value be caused to decline, but is not caused by leakage, if due to letting out Dew, then numerical value decline can be very fast), then it is believed that qualified, weld is not revealed.Then it can make to push away column reset, push away column and resetted Cheng Zhong, a part of gas returns in sleeve in big gas-flow closure circle, so electro-fusion sleeve is no longer compressed in big gas-flow closure circle, this Invention can smoothly take out.

If leakproofness is unqualified, may be repaired welding, (PE is thermoplastic, so reheating using fuse machine Once, weld is allowed to melt again, cool and solidify) or the pipeline structure that more renews after removing.After reparation, the present invention can use Being sealed property detects again.

Second locking bar is equipped with bar slot far from one end of intermediate locking bar, and interior magnetic patch 42 is equipped in bar slot, and the second locking bar is perpendicular Straight arrangement, interior magnetic patch bottom surface are flushed with the second locking bar lower end surface, and sleeve lateral wall is outer equipped with what can be adsorbed mutually with interior magnetic patch Magnetic patch 16 is determined in locking hole and when interior magnetic patch is adsorbed on outer magnetic patch when the first locking bar is inserted in: the first locking bar be in outer magnetic patch with Between dynamic stop collar.When not using U-shape lock bar, the first locking bar can be inserted in and be determined in locking hole, interior magnetic patch is adsorbed on outer magnetic On block, it can avoid U-shape lock bar and shake, lose or interfere other structures mobile.

The head part includes rubber slab 151 and several struts 152, and second piston axis is perpendicular to rubber slab, strut one end First piston is connected, the strut other end connects rubber slab, and rubber slab is between first piston and second piston, on rubber slab Equipped with multiple ventholes.Rubber slab contacts second piston, can reduce the impact to second piston, avoid damage to second piston, more A venthole helps quickly to flow in internal gas.

The first piston is slidingly sealed cooperation by several first sealing rings and sleeve, first piston be equipped with it is several and One-to-one first annular groove of first sealing ring 121, the first sealing ring are arranged on corresponding first annular groove, and second piston passes through Several second sealing rings and sleeve are slidingly sealed cooperation, and second piston is equipped with several one-to-one with the second sealing ring 131 Second annular groove, the second sealing ring are arranged on corresponding second annular groove.Although being pointed out that second piston and sleeve lining Between with very little gap, but not influence detection process.In other words, definition between second piston and sleeve lining and The space being between the second sealing ring of any two is microgap, when pressurized hole is connected to microgap, meeting in sealing air flue There is minimal amount of gas to enter microgap, but too small due to measuring, thus do not influence small gas-flow closure circle, big gas-flow closure circle it is close Seal effect.Other similar situations are similarly.

The sleeve lateral wall is equipped with deck ring 17, and the centre bore of deck ring is connected to pressurized hole outlet end, deck ring Centre bore in be equipped with the filter cotton block 171 that is clamped with deck ring.Filter cotton block is arranged can be to avoid miscellaneous in air in valve Matter enters in sleeve, can extend service life of the present invention, ensures test effect.

The sleeve lateral wall is equipped with several gag lever posts 18 for being used to contact electro-fusion sleeve end, and each gag lever post is along sleeve Circumferentially it is uniformly distributed.Electro-fusion sleeve pipe end is contacted using gag lever post, it is ensured that the present invention is in reasonable position, ensures detection knot The accuracy of fruit.

Claims (6)

1. a kind of PE ball valve detection device, characterized in that
Including sleeve, push away column and two big basic rings being set on sleeve;
Described sleeve one end is arranged with fixing limit ring, pushes away column and is equipped with dynamic stop collar for contacting fixing limit ring, on big basic ring Equipped with the big gas-flow closure circle that can seal cooperation with electro-fusion sleeve inner wall, moves stop collar and connect equipped with several with the sliding of fixing limit ring The guide rod connect, guide rod are fixed with dynamic stop collar, and the guide rod other end is equipped with the spacing head for contacting fixing limit ring, fixing limit Ring is between dynamic stop collar and any spacing head;
The sleeve is equipped with sealing hole, sealing air flue and pressurized hole, big gas-flow closure circle communication seals air flue, sealing hole import End connection sleeve inner, sealing hole outlet end communication seals air flue, pressurized hole input end are connected to sleeve inner, pressurized hole outlet end It is connected to valve nozzle interior;
The sleeve other end is equipped with sealing plate, and the first piston of pressurized hole can be sealed and can seal the of sealing hole by being equipped in sleeve Two pistons, first piston and sleeve are slidingly sealed cooperation, and second piston and sleeve are slidingly sealed cooperation, and first piston is equipped with the One stomata, second piston are equipped with the second stomata, and second piston connection pushes away column, push away column equipped with interior post holes and for fixation pressure The table card slot of table, table card slot are in outside sleeve, and table card slot is equipped with pressure gauge, and the first pressure is formed between sealing plate and first piston Chamber, forms the second pressure chamber between first piston and second piston, the first intracavitary reset spring equipped with axis horizontal of pressure resets bullet Spring one end connects sealing plate, and the reset spring other end connects first piston, and first piston is equipped with the top for contacting second piston Part, it is intracavitary that head part is in the second pressure, upward pushing away axis of a cylinder: sealing plate, reset spring, first piston, head part, second piston and pushing away column It is sequentially arranged, the first pressure chamber, the first stomata, second press the test lead of chamber, the second stomata, interior post holes and pressure gauge to be sequentially communicated;
When sealing hole is connected to the second pressure chamber: reset spring is in nature, and first piston seals pressurized hole;
When second piston seals sealing hole and reset spring is in nature: first piston seals pressurized hole;
When pressurized hole is connected to the second pressure chamber: reset spring is in compressive state, and second piston contacts head part, second piston envelope Firmly sealing hole;
When dynamic stop collar contacts fixing limit ring: pressurized hole is connected to the second pressure chamber;
The fixing limit ring, which is equipped with, determines locking hole and U-shape lock bar, and U-shape lock bar includes the first locking bar, intermediate locking bar and the second lock Bar, the first lock are parallel to the second locking bar, and intermediate locking bar one end connects the first locking bar, and the intermediate locking bar other end connects the second locking bar, Perpendicular to the first locking bar, the first locking bar is inserted in be determined in locking hole intermediate locking bar, and dynamic stop collar, which is equipped with, can allow the second locking bar to be inserted into Dynamic locking hole, lock stops axially bored line and is parallel to dynamic locking hole, determines in locking hole and the second locking bar is inserted in when the first locking bar is inserted in When in dynamic locking hole: dynamic stop collar contact sleeve.
2. a kind of PE ball valve detection device according to claim 1, characterized in that second locking bar is far from intermediate locking bar One end be equipped with bar slot, interior magnetic patch is equipped in bar slot, the second locking bar arranges that interior magnetic patch bottom surface and the second locking bar lower end surface are neat vertically Flat, sleeve lateral wall is equipped with the outer magnetic patch that can be adsorbed mutually with interior magnetic patch, determines in locking hole and interior magnetic when the first locking bar is inserted in When block is adsorbed on outer magnetic patch: the first locking bar is between outer magnetic patch and dynamic stop collar.
3. a kind of PE ball valve detection device according to claim 1, characterized in that the head part includes rubber slab and several Strut, for second piston axis perpendicular to rubber slab, strut one end connects first piston, and the strut other end connects rubber slab, rubber Plate is between first piston and second piston, and rubber slab is equipped with multiple ventholes.
4. a kind of PE ball valve detection device according to claim 1, characterized in that the first piston passes through several first Sealing ring and sleeve are slidingly sealed cooperation, and first piston is equipped with several and one-to-one first annular groove of the first sealing ring, the One sealing ring is arranged on corresponding first annular groove, and second piston is slidingly sealed cooperation by several second sealing rings and sleeve, Second piston is equipped with several and one-to-one second annular groove of the second sealing ring, and the second sealing ring is arranged in corresponding second ring On slot.
5. a kind of PE ball valve detection device according to claim 1 or 2 or 3 or 4, characterized in that the sleeve lateral wall It is equipped with deck ring, the centre bore of deck ring is connected to pressurized hole outlet end, is equipped with and deck ring card in the centre bore of deck ring The filter cotton block connect.
6. a kind of PE ball valve detection device according to claim 1, characterized in that the sleeve lateral wall is equipped with several For contacting the gag lever post of electro-fusion sleeve end, each gag lever post is circumferentially uniformly distributed along sleeve.
CN201811446778.XA 2018-11-29 2018-11-29 A kind of PE ball valve detection device CN109470429A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109883627A (en) * 2019-03-29 2019-06-14 重庆川仪调节阀有限公司 A kind of valve leak detecting tool and detection method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2393380C1 (en) * 2009-01-27 2010-06-27 Общество С Ограниченной Ответственностью "Газпромэнергодиагностика" Method for measurement of gas flow through untight gate of closed ball valve of stop and control valves of manifold pipeline and device for its implementation
CN204694409U (en) * 2015-06-30 2015-10-07 杭州欣卓科技有限公司 PE ball valve air tightness test machine
CN105181273A (en) * 2015-09-11 2015-12-23 王国良 Ball valve detection equipment
CN206248296U (en) * 2016-11-04 2017-06-13 孙秀 One kind is used for gas meter, flow meter ball valve air-tightness pressure detecting instrument
CN206725167U (en) * 2017-05-15 2017-12-08 阜阳国祯燃气有限公司 A kind of PE ball valves pressure testing device
CN107727331A (en) * 2017-11-08 2018-02-23 宁波市宇华电器有限公司 A kind of ball-valve valve rod air leakage test equipment
CN108896254A (en) * 2018-07-09 2018-11-27 陈永杰 A kind of pressure maintaining module of polyethylene ball valve

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2393380C1 (en) * 2009-01-27 2010-06-27 Общество С Ограниченной Ответственностью "Газпромэнергодиагностика" Method for measurement of gas flow through untight gate of closed ball valve of stop and control valves of manifold pipeline and device for its implementation
CN204694409U (en) * 2015-06-30 2015-10-07 杭州欣卓科技有限公司 PE ball valve air tightness test machine
CN105181273A (en) * 2015-09-11 2015-12-23 王国良 Ball valve detection equipment
CN206248296U (en) * 2016-11-04 2017-06-13 孙秀 One kind is used for gas meter, flow meter ball valve air-tightness pressure detecting instrument
CN206725167U (en) * 2017-05-15 2017-12-08 阜阳国祯燃气有限公司 A kind of PE ball valves pressure testing device
CN107727331A (en) * 2017-11-08 2018-02-23 宁波市宇华电器有限公司 A kind of ball-valve valve rod air leakage test equipment
CN108896254A (en) * 2018-07-09 2018-11-27 陈永杰 A kind of pressure maintaining module of polyethylene ball valve

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109883627A (en) * 2019-03-29 2019-06-14 重庆川仪调节阀有限公司 A kind of valve leak detecting tool and detection method

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