CN105716805B - A kind of closure detection device - Google Patents
A kind of closure detection device Download PDFInfo
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- CN105716805B CN105716805B CN201610182495.3A CN201610182495A CN105716805B CN 105716805 B CN105716805 B CN 105716805B CN 201610182495 A CN201610182495 A CN 201610182495A CN 105716805 B CN105716805 B CN 105716805B
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- central siphon
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating 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
- G01M3/28—Investigating 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
- G01M3/2853—Investigating 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
- G01M3/2869—Investigating 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 for seals not incorporated in a pipe joint
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- General Physics & Mathematics (AREA)
- Jet Pumps And Other Pumps (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention discloses a kind of closure detection devices, including main engine bed, air feed pump, block cylinder, compression cylinder, central siphon, limit base, connection supports frame, clamping piston bar is equipped with positioning plate, end socket piston rod is equipped with band moving frame, central siphon is equipped with modeling and manages outer end-plate, the outer end-plate of steel pipe, mould pipe exterior seal ring, steel pipe exterior seal ring, central siphon is equipped with the first air inlet, first air inlet is equipped with the first breather check valve, central siphon outer wall is equipped with the first baroceptor, the steel modeling crossover sub that connection supports frame is supported is between limit base and closure cylinder, the gas supply end of air feed pump inside air supply pipe and central siphon by being connected to.The beneficial effects of the invention are as follows：Reasonable integral structure, to steel mould crossover sub positioning and clamping in place, can ensure leakproofness but will not press from both sides damage steel modeling crossover sub；With can automatic adjusument sealing structure, can strengthen hyperbar detection when sealing effect.
Description
Technical field
The invention belongs to the close property technical field of measurement and test of pipe fitting joint more particularly to a kind of closure detection devices.
Background technology
Steel moulds crossover sub, and also known as PE steel moulds crossover sub, is widely used among current production, life, such as
Largely steel will be used to mould crossover sub in combustion gas, natural gas transportation pipeline（Outer combustion gas pipeline is mostly PE pipelines, into entering the room
It is generally inside steel pipe, needs to mould crossover sub using steel in switching process）.Steel moulds crossover sub, itself includes lengths of steel pipes（One section
Steel pipe）With modeling pipeline section（Usually one section of PE pipe）, one end of lengths of steel pipes docks to form linkage section with one end of modeling pipeline section, linkage section
It is mostly clamped and is formed with modeling pipeline section one end by lengths of steel pipes one end, and be sealed using sealing ring（Linkage section would generally be arranged one
A little concaveconvex structures coordinate clamping, if the flange in lengths of steel pipes mutually fastens with the card slot on modeling pipeline section, can also be set outside linkage section
Anchor ear is set further to be held tightly）, the front of motor of lengths of steel pipes is known as steel pipe end, and the front of motor for moulding pipeline section is known as moulding pipe end,
Modeling pipe end can mould pipe with waiting docking（PE is managed）Welding, steel pipe end can connect with steel tube screw thread to be docked, weld or pass through it
Its structure is docked.Since steel moulds crossover sub applied to gas, liquid transportation art, so its leakproofness needs
To guarantee, before manufacture, its being sealed property is detected.
When the prior art is detected steel modeling crossover sub, generally use gasket or sealing ring are placed in steel modeling conversion and connect
Head both ends（Steel pipe end and modeling pipe end）Outside, while with the force application apparatus such as jack or hydraulic cylinder be clamped in steel mould crossover sub
Both ends seal to make two ends of gasket or sealing ring and steel modeling crossover sub be formed, the steel modeling after entire sealing are turned
Changing-over head is immersed in the water, then toward being passed through compressed gas and examine its sealing performance inside steel modeling crossover sub.
Above-mentioned test method has the disadvantages that：1, operating process is complicated, and rack heavier-weight need to be by external equipment
Rack is immersed in the water, and the installation of steel modeling crossover sub is also more troublesome；2, pressing plate is pushed to steel using jack
Modeling crossover sub is sealed and sealing ring is placed in outside steel modeling crossover sub both ends, and hydraulic cylinder is used in combination（Or cylinder）It is clamped in
When steel modeling crossover sub both ends are sealed, all more difficult control of dynamics of the two may if the power that pushes or clamp is inadequate
The sealing of steel modeling crossover sub end can be made not firm, to influence the accuracy of experiment, bring the erroneous judgement in quality, push or
If the power of clamping is excessive, steel modeling crossover sub can be made to deform, lead to steel modeling crossover sub end face（Pipe end）Out-of-flatness, from
And so that between steel modeling crossover sub and pressing plate sealing can not be formed, the erroneous judgement in quality is brought, in addition, the power for pushing or clamping
Excessively, it is also possible to directly damage steel and mould crossover sub.
Invention content
It is easy to operate it is an object of the invention to overcome the defect of prior art, and provide a kind of reasonable integral structure, test
As a result accuracy is high, and can guarantee that two pipe ends of steel modeling crossover sub are not easy to be pressed from both sides the closure detection device of damage.
To achieve the goals above, the present invention uses following technical scheme：
A kind of closure detection device, including main engine bed, air feed pump further include blocking cylinder, compression cylinder, limit base, one
Root central siphon closed at both ends and horizontal is used to support steel modeling crossover sub and steel modeling crossover sub axis is made to be in horizontality
Connection supports frame blocks cylinder, compression cylinder, connection supports frame and is arranged on main engine bed, and the closure cylinder includes end socket
The scalable direction of cylinder body, end socket the cylinder piston, end socket piston rod, end socket piston rod is horizontal, and compression cylinder includes compressing cylinder body, pressure
Tight the cylinder piston, clamping piston bar, the scalable direction of clamping piston bar is vertical, and clamping piston bar is equipped with to be turned for compressing steel modeling
The positioning plate of changing-over head, positioning plate are in above connection supports frame, and end socket piston rod is equipped with for driving central siphon along central siphon axis
To the band moving frame moved horizontally, central siphon is equipped with cricoid modeling and manages the outer end-plate of outer end-plate, cricoid steel pipe, and outer end seal is managed in modeling
Plate peripheral surface is equipped with modeling pipe outside plate annular groove, and the outer end-plate peripheral surface of steel pipe is equipped with steel pipe outside plate annular groove, modeling manage outer end-plate,
The outer end-plate of steel pipe, modeling pipe outside plate annular groove, steel pipe outside plate annular groove are coaxial with central siphon, and modeling pipe outside plate annular groove is equipped with for contacting
Steel moulds the modeling pipe exterior seal ring of crossover sub inner wall, and steel pipe outside plate annular groove is equipped with the steel that crossover sub inner wall is moulded for contacting steel
Pipe exterior seal ring, central siphon are equipped with the first air inlet being connected to central siphon inside, and it is unidirectional that the first air inlet is equipped with the first air inlet
Valve, the first breather check valve can be by direction by, to outside central siphon, central siphon outer wall is equipped with the first baroceptor in central siphon,
Between the steel modeling crossover sub that connection supports frame is supported is in limit base and blocks cylinder, the gas supply end of air feed pump passes through gas supply
It is connected to inside pipe and central siphon, limit base is equipped with the elastic ring for contacting steel modeling crossover sub one end, the positioning plate following table
Face is equipped with the rubber clamping pad that crossover sub is moulded for contacting steel.
Preferably, the connection supports frame includes that horizontal support baseboard, two supports vertical and parallel to each other are vertical
Plate, supporting vertical plate are equipped with the V-arrangement support slot that crossover sub is moulded for accommodating steel, opening up, the supporting vertical plate of V-arrangement support slot
Lower end is fixed with support baseboard top surface.
Preferably, the central siphon is equipped with cricoid modeling pipe inner end sealing plate, cricoid steel pipe inner end sealing plate, modeling pipe inner end
Sealing plate peripheral surface is equipped with modeling pipe inner panel annular groove, and steel pipe inner end sealing plate peripheral surface is equipped with steel pipe inner panel annular groove, moulds pipe inner panel ring
Slot is equipped with the modeling pipe inner seal ring that crossover sub inner wall is moulded for contacting steel, and steel pipe inner panel annular groove is equipped with for contacting steel modeling
The steel pipe inner seal ring of crossover sub inner wall, modeling pipe inner end sealing plate, steel pipe inner end sealing plate, modeling pipe inner panel annular groove, steel pipe inner panel ring
Slot is coaxial with central siphon, and modeling pipe inner end sealing plate is between steel pipe inner end sealing plate and the outer end-plate of modeling pipe, at the sealing plate of steel pipe inner end
Outside modeling pipe inner end sealing plate and steel pipe between end-plate, central siphon is equipped with the second air inlet and central siphon being connected to central siphon inside
Inside connection third air inlet, central siphon outer wall be equipped with the second baroceptor, third baroceptor, the first air inlet with
First baroceptor is in outside steel pipe between end-plate and steel pipe inner end sealing plate, the second air inlet and the second baroceptor
It is between steel pipe inner end sealing plate and modeling pipe inner end sealing plate, third air inlet is in modeling pipe inner end with third baroceptor
Between outer end-plate is managed in sealing plate and modeling, the second air inlet is equipped with the second breather check valve, third air inlet equipped with third into
Gas check valve, the second breather check valve can by direction, third breather check valve can by direction be by central siphon extremely
Outside central siphon.
Preferably, the steel pipe exterior seal ring, steel pipe inner seal ring, modeling pipe inner seal ring, modeling pipe exterior seal ring are
Inside has the gas-flow closure circle of inflatable chamber, and the outer end-plate of steel pipe is equipped with will be in steel pipe exterior seal ring inner inflatable chamber and central siphon
The steel pipe outer ring gas tube of portion's connection, steel pipe inner end sealing plate, which is equipped with, to be connected inside steel pipe inner seal ring inner inflatable chamber and central siphon
Logical steel pipe inner ring gas tube, modeling pipe inner end sealing plate is equipped with will mould pipe inner seal ring inner inflatable chamber and central siphon inside is connected to
Pipe inner ring gas tube is moulded, modeling manages outer end-plate and is equipped with the modeling pipe that will be moulded and be connected to inside pipe exterior seal ring inner inflatable chamber and central siphon
Outer ring gas tube.
Preferably, the central siphon is equipped with the pressure release gas vent being connected to central siphon inside, band moving frame is with central siphon by rubbing
Driving structure connection is wiped, friction driving structure includes promoting limit body, retracting limit body, friction band rotating ring, several push-pull rods, is pushed away
Pull rod is horizontal and push-pull rod one end connect band moving frame, push-pull rod other end connection friction band rotating ring, friction band moving ring sleeve are located at axis
On pipe and coaxial with central siphon, friction band rotating ring can move horizontally on central siphon, and friction band rotating ring inner ring surface is equipped with friction sealed
Slot, friction sealed slot are equipped with drag seal, and drag seal is coaxial with central siphon, between drag seal and central siphon lateral wall
It squeezes mutually, promotes limit body, retracts limit body and be in that central siphon is outer and fixed with central siphon, and limit base has for limiting steel
The sealing plate confined planes of the outer end-plate of pipe, between pressure release gas vent is in propulsion limit body and retracts limit body, at friction band rotating ring
Between promoting limit body and retracting limit body, when friction band rotating ring contact promotes limit body, drag seal seals pressure release row
Stomata；When friction band rotating ring contact retracts limit body, drag seal is detached with pressure release gas vent.
Preferably, the propulsion limit body is annular in shape, the limit body that retracts is annular in shape, promotes limit body and central siphon same
It is coaxial with central siphon to retract limit body for axis.
Preferably, the air supply pipe from inside break-make admission line and central siphon by being connected to, the gas supply end of air feed pump connects
The other end of one end of logical air supply pipe, air supply pipe is connected to from one end of break-make air inlet pipe, from the other end and axis of break-make air inlet pipe
Connection inside pipe, friction band rotating ring are equipped with one piece of break-make transverse slat, break-make transverse slat pass through from break-make air inlet pipe and with from break-make into
Tracheae is slidingly sealed cooperation, and break-make transverse slat is equipped with plate venthole, when friction band rotating ring contact promotes limit body, plate venthole with
It is connected to from the inner passage of break-make air inlet pipe；When friction band rotating ring contact retracts limit body, break-make transverse slat will be from break-make air inlet pipe
Inner passage partition.
Preferably, the central siphon lateral wall is equipped with external screw thread, steel pipe inner end sealing plate inner ring surface is moulded in the sealing plate of pipe inner end
Anchor ring is connected by the external screw thread on internal thread and central siphon lateral wall, and central siphon is equipped with inflating port in first, in second
Inflating port, inflating port in first, in second inflating port be connected to inside central siphon；The first air flue is equipped in the sealing plate of steel pipe inner end,
First air flue outer end opening is opened on steel pipe inner end sealing plate inner ring surface, steel in steel pipe inner end sealing plate outer ring surface, the first air flue inner end
Pipe inner ring gas tube one end is connected to steel pipe inner seal ring inner inflatable chamber, the steel pipe inner ring gas tube other end is outside the first air flue
End is stretched into the first air flue, is sealed between steel pipe inner ring gas tube outer tube wall and the air flue inner wall of the first air flue, in the first air flue
Rectify to inflating port in first and is connected to inflating port in first；It moulds and is equipped with the second air flue in the sealing plate of pipe inner end, outside the second air flue
For end opening in modeling pipe inner end sealing plate outer ring surface, the second air flue inner end is opened on modeling pipe inner end sealing plate inner ring surface, modeling pipe inner ring inflation
Pipe one end is connected to modeling pipe inner seal ring inner inflatable chamber, moulds the pipe inner ring gas tube other end and stretch into first from the second air flue outer end
In air flue, moulds and sealed between pipe inner ring gas tube outer tube wall and the air flue inner wall of the second air flue, the second air flue inner end face second
It interior inflating port and is connected to inflating port in second.
Preferably, the steel pipe end for the steel modeling crossover sub that connection supports frame is supported is towards limit base, the propulsion limits
Position body is in modeling and manages between outer end-plate and friction band rotating ring, retracts limit body and is in friction band rotating ring and between moving frame.
The beneficial effects of the invention are as follows：Reasonable integral structure, to steel mould crossover sub positioning and clamping in place, can ensure
Leakproofness but will not press from both sides damage steel modeling crossover sub；With can automatic adjusument sealing structure, can strengthen hyperbar detection when
Sealing effect, maintain the stability of detection process；Many places can disposably be carried out targetedly to detect, it is efficient, effect is good；
Have multiple protective structure and the control structure of coordinated type, can be to avoid the problem caused by various maloperations, and action connects
Continuous property is good, and work efficiency is high, and detection process is smooth efficiently.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention；
Fig. 2 is the structural schematic diagram of inventive joint supporting rack；
Fig. 3 is the enlarged drawing at A in Fig. 1；
Fig. 4 is the enlarged drawing at B in Fig. 1；
Fig. 5 is the enlarged drawing at C in Fig. 1；
Fig. 6 is the enlarged drawing at D in Fig. 1；
Fig. 7 is the enlarged drawing at E in Fig. 1.
In figure：Outer end seal is managed in air feed pump 1, air supply pipe 11, sliding rack 12, pump link 13, support sliding rail 14, central siphon 2, modeling
Plate 21, modeling pipe exterior seal ring 211, modeling pipe outer ring gas tube 212, the outer end-plate 22 of steel pipe, steel pipe exterior seal ring 221, outside steel pipe
Enclose gas tube 222, modeling pipe inner end sealing plate 23, modeling pipe inner seal ring 231, modeling pipe inner ring gas tube 232, the second air flue 23a, steel pipe
Inner end sealing plate 24, steel pipe inner seal ring 241, steel pipe inner ring gas tube 242, the first air flue 24a, the first air inlet 2a, second into
Gas port 2b, third air inlet 2c, pressure release gas vent 2d, inflating port 2e in first, inflating port 2f, limit base 3, connector branch in second
Support 4, supporting vertical plate 42, V-arrangement support slot 43, end socket cylinder body 51, end socket piston rod 52, band moving frame 53, promotes support baseboard 41
Limit body 541 retracts limit body 542, friction band rotating ring 543, drag seal 5431, push-pull rod 544, compresses cylinder body 61, pressure
Tight piston rod 62, positioning plate 63, rubber clamping pad 631, modeling pipeline section 71, lengths of steel pipes 72.
Specific implementation mode
The present invention will be further described with reference to the accompanying drawings and detailed description.
In embodiment as shown in Figures 1 to 7, a kind of closure detection device, including main engine bed, air feed pump 1, further include envelope
Gas shutoff cylinder, compression cylinder, limit base 3, one central siphon 2 closed at both ends and horizontal are used to support steel modeling crossover sub and make steel
Modeling crossover sub axis is in the connection supports frame 4 of horizontality, blocks cylinder, compression cylinder, connection supports frame and is arranged at
On main engine bed, the cylinder that blocks includes the end socket the cylinder piston and end socket that end socket cylinder body 51 and end socket cylinder body are slidingly sealed cooperation
The scalable direction of the end socket piston rod 52 of the cylinder piston connection, end socket piston rod level and end socket piston rod is horizontal, compression cylinder
Including the compression the cylinder piston for compressing cylinder body 61, being slidingly sealed cooperation with compression cylinder body, the clamping piston being connect with compression the cylinder piston
Bar 62, clamping piston bar is vertically and the scalable direction of clamping piston bar is vertical, and clamping piston bar is equipped with for compressing steel modeling
The positioning plate 63 of crossover sub, positioning plate are in above connection supports frame, and end socket piston rod is equipped with for driving central siphon along axis
The band moving frame 53 that pipe axially moves horizontally, central siphon are equipped with cricoid modeling and manage the outer end-plate 22 of outer end-plate 21, cricoid steel pipe,
Modeling manages outer end-plate peripheral surface and is equipped with modeling pipe outside plate annular groove, and the outer end-plate peripheral surface of steel pipe is equipped with steel pipe outside plate annular groove, modeling
The outer end-plate of the outer end-plate of pipe, steel pipe, modeling pipe outside plate annular groove, steel pipe outside plate annular groove are coaxial with central siphon, mould on pipe outside plate annular groove
Equipped with the modeling pipe exterior seal ring 211 for moulding crossover sub inner wall for contacting steel, steel pipe outside plate annular groove is equipped with for contacting steel modeling
The steel pipe exterior seal ring 221 of crossover sub inner wall, central siphon are equipped with the first air inlet 2a being connected to central siphon inside, the first air inlet
Mouth is equipped with the first breather check valve, the first breather check valve can be by direction by central siphon to outside central siphon, central siphon outer wall
It is equipped with the first baroceptor, between the steel modeling crossover sub that connection supports frame is supported is in limit base and blocks cylinder,
By being connected to inside air supply pipe 11 and central siphon, limit base is equipped with moulds crossover sub one for contacting steel at the gas supply end of air feed pump
The elastic ring at end, the positioning plate lower surface are equipped with the rubber clamping pad 631 that crossover sub is moulded for contacting steel.Elastic ring with
Steel modeling crossover sub is coaxial, and elastic ring can be made of rubber or other elastic materials.Air supply pipe and the connectivity part inside central siphon
It is managed between outer end-plate and closure cylinder positioned at modeling.The reading display end of first baroceptor is in tested steel modeling crossover sub
Outside.The steel pipe end of steel that the connection supports frame is supported modeling crossover sub is towards limit base.Air feed pump is arranged in a sliding rack
On 12, air feed pump is connect by pumping link 13 with central siphon, and main engine bed is equipped with support sliding rail 14, and sliding rack is slided with support sliding rail
The slidably direction of dynamic cooperation, sliding rack is horizontal.Support sliding rail can assist being supported air feed pump, band moving frame etc., prevent
End socket piston rod load（Especially downward power）It is excessive, while auxiliary guiding can be carried out, improve course of work stability.
The lengths of steel pipes 72 and modeling 71 internal diameter of pipeline section of steel modeling crossover sub are not necessarily identical, and usually, modeling pipeline section internal diameter omits
More than lengths of steel pipes internal diameter（Also lengths of steel pipes internal diameter in special circumstances is more than modeling pipeline section internal diameter, here only by taking normal conditions as an example
It is stated, and lengths of steel pipes internal diameter is more than under the situation of modeling pipeline section internal diameter, testing principle is also identical）.Connection supports frame
On can place steel modeling crossover sub（Be usually by lengths of steel pipes frame on connection supports frame, or will modeling pipeline section frame in connector
On supporting rack）, by steel modeling crossover sub one end（Steel pipe end）Against the elastic ring on limit base（Steel pipe end in contact elastic ring is
Can, elastic ring is not sealing structure, without sealing steel pipe end.Due to steel pipe end end face do not ensure that it is substantially flat, compared to
Rigid contact can preferably ensure contact effect using elastic ring come transition, and elastic ring has deformation adaptability, even if steel
Pipe end end face is uneven, also fully can carry out contact limit to steel pipe end comprehensively, and can reduce steel pipe end and squeeze impaired wind
Danger）, clamping piston bar drives positioning plate to move down, rubber clamping pad on positioning plate lower surface contact steel modeling crossover sub and by steel
Modeling crossover sub is fixed（It can prevent from positioning plate crushing and scratch steel and mould to turn to contact steel modeling crossover sub with rubber clamping pad
Changing-over head, and the contact compression of rubber clamping pad is better）, stretched out with rear head piston rod, central siphon driven by band moving frame
And the outer end-plate of modeling pipe, the outer end-plate of steel pipe on central siphon are stretched into together in steel modeling crossover sub, are reached modeling and are managed outer end-plate
It is in modeling pipe end（It moulds in pipeline section）, the outer end-plate of steel pipe be in steel pipe end（In lengths of steel pipes）State, and mould pipe exterior seal ring and match
The modeling pipe end that steel is moulded crossover sub by the outer end-plate of conjunction modeling pipe seals, steel is moulded and turned by end-plate outside steel pipe exterior seal ring cooperation steel pipe
The steel pipe end seal of changing-over head is lived.Then central siphon inside can be supplied by air supply pipe using air feed pump, gas is through first
Air inlet enters in steel modeling crossover sub, after certain pressure value to be achieved（The pressure value can according in actual use gas or
Fluid pressure is set, and generally can be 1 to 8 times of atmospheric pressure）, stop gas supply（Since air feed pump usually carries check valve,
So in steel modeling crossover sub, the gas in central siphon will not be from gas supply pump reflux and leakage, according to the gas supply without check valve
Pump then needs that check valve or on-off valve is arranged at the gas supply end of air feed pump, after being stopped the supple of gas or steam with guarantee in steel modeling crossover sub, in central siphon
Gas will not flow back）.After air pressure in tested steel modeling crossover sub is basicly stable, the reading of the first baroceptor of continuous observation
Number display ends, if numerical value is unchanged in a period of time or numerical value change in the reasonable scope, be tested steel and mould crossover sub air-tightness
It is qualified.After the completion of detection, by air feed pump and air supply pipe（Usually cylinder special plastic hose can also use metal bellows etc.）
Separation can pull out central siphon again after the high pressure gas release in steel modeling crossover sub, in central siphon.
The connection supports frame includes horizontal 41, two vertical and parallel to each other supporting vertical plates 42 of support baseboard, branch
Support riser be equipped with for accommodate steel mould crossover sub V-arrangement support slot 43, V-arrangement support slot it is opening up, under supporting vertical plate
End is fixed with support baseboard top surface, in a supporting vertical plate：V-arrangement support slot runs through two plate faces of supporting vertical plate.Utilize two
The V-arrangement support slot of a supporting vertical plate upper end is supported and limits to tested steel modeling crossover sub as support construction.
The central siphon is equipped with cricoid modeling pipe inner end sealing plate 23, cricoid steel pipe inner end sealing plate 24, modeling pipe inner end sealing plate
Peripheral surface is equipped with modeling pipe inner panel annular groove, and steel pipe inner end sealing plate peripheral surface is equipped with steel pipe inner panel annular groove, moulds on pipe inner panel annular groove
Equipped with the modeling pipe inner seal ring 231 for moulding crossover sub inner wall for contacting steel, steel pipe inner panel annular groove is equipped with for contacting steel modeling
The steel pipe inner seal ring 241 of crossover sub inner wall, modeling pipe inner end sealing plate, steel pipe inner end sealing plate, modeling pipe inner panel annular groove, steel pipe inner panel
Annular groove is coaxial with central siphon, and modeling pipe inner end sealing plate is between steel pipe inner end sealing plate and the outer end-plate of modeling pipe, steel pipe inner end sealing plate
Be between modeling pipe inner end sealing plate and the outer end-plate of steel pipe, central siphon be equipped with the second air inlet 2b be connected to inside central siphon and
The third air inlet 2c being connected to inside central siphon, central siphon outer wall are equipped with the second baroceptor, third baroceptor, first into
Gas port and the first baroceptor are in outside steel pipe between end-plate and steel pipe inner end sealing plate, the second air inlet and the second air pressure
Sensor is between steel pipe inner end sealing plate and modeling pipe inner end sealing plate, and third air inlet is in modeling with third baroceptor
Between outer end-plate is managed in pipe inner end sealing plate and modeling, the second air inlet is equipped with the second breather check valve, and third air inlet is equipped with
Third breather check valve, the second breather check valve can by direction, third breather check valve can by direction be by axis
To outside central siphon in pipe.The reading display end of second baroceptor, the reading display end of third baroceptor are in tested
Steel is moulded outside crossover sub（The induction end of first baroceptor is in outside steel pipe between end-plate and steel pipe inner end sealing plate, and second
The induction end of baroceptor is between steel pipe inner end sealing plate and modeling pipe inner end sealing plate, at the induction end of third baroceptor
Between modeling pipe inner end sealing plate and modeling manage outer end-plate）.Increase modeling pipe inner end sealing plate and steel pipe inner end sealing plate（With modeling pipe outer end
The outer end-plate of sealing plate, steel pipe is the same, as central siphon is stretched into together in steel modeling crossover sub）, so as to disposably carry out " three sections
Detection ", respectively lengths of steel pipes, modeling pipeline section and linkage section（The Butt Section of lengths of steel pipes and modeling pipeline section）, the outer end-plate of steel pipe and steel
The air-tight cavity of detection lengths of steel pipes is formed between the sealing plate of pipe inner end, forming detection between steel pipe inner end sealing plate and modeling pipe inner end sealing plate connects
The air-tight cavity of section is connect, pipe inner end sealing plate is moulded and the air-tight cavity of formation detection modeling pipeline section between outer end-plate is managed in modeling, air feed pump passes through
First air inlet, the second air inlet, third air inlet are simultaneously inflated each section of air-tight cavity, the first baroceptor, second
Baroceptor, third baroceptor then can be simultaneously to each section of progress air pressure detections, so as to quickly and effectively obtain whether deposit
In crack and leakage, and which section specific leakage part is.
The steel pipe exterior seal ring, steel pipe inner seal ring, modeling pipe inner seal ring, modeling pipe exterior seal ring be it is internal have fill
The gas-flow closure circle of air cavity, the outer end-plate of steel pipe are equipped with the steel that will be connected to inside steel pipe exterior seal ring inner inflatable chamber and central siphon
Pipe outer ring gas tube 222, steel pipe inner end sealing plate are equipped with the steel that will be connected to inside steel pipe inner seal ring inner inflatable chamber and central siphon
Pipe inner ring gas tube 242, modeling pipe inner end sealing plate are equipped with the modeling that will be moulded and be connected to inside pipe inner seal ring inner inflatable chamber and central siphon
Pipe inner ring gas tube 232, modeling manage outer end-plate and are equipped with the modeling that will be moulded and be connected to inside pipe exterior seal ring inner inflatable chamber and central siphon
Pipe outer ring gas tube 212.Further, steel pipe exterior seal ring, steel pipe inner seal ring, modeling pipe inner seal ring, modeling pipe in this programme
Exterior seal ring is gas-flow closure circle, to which its leakproofness can be adjusted.When above-mentioned each sealing ring is conventional seals circle（Such as rubber
The solid sealing ring of glue）, in order to ensure that airtight effect when detection, sealing ring need tightly to press between steel modeling crossover sub inner wall
Patch, this results in the friction when entering steel modeling crossover sub of each sealing ring very big, easily leads into difficult and easy Fast Wearing.
And in the present solution, before detection, above-mentioned each sealing ring is all non-aerating, to which central siphon and each sealing plate, each sealing ring can be smooth
It stretches into steel modeling crossover sub, after stretching into place, air feed pump supplies central siphon inside, and gas is in addition to entering each section of seal chamber
Outside, can also enter steel pipe exterior seal ring through steel pipe outer ring gas tube, steel pipe inner seal ring is entered through steel pipe inner ring gas tube,
Modeling pipe inner seal ring is entered through moulding pipe inner ring gas tube, enters modeling pipe exterior seal ring through moulding pipe outer ring gas tube, to be formed
Each section of sealing.Also, each section of airtight cavity pressure is bigger, and pressure is also bigger in each sealing ring, so having detection air pressure and close
The autonomous adaptation regulating power of envelope ability can effectively prevent sealing insufficient or excessive seal.And it detects and completes, discharge steel modeling turn
In changing-over head and when axis overpressure, high pressure gas can be released in each sealing ring, and each sealing ring connects with steel modeling conversion after pressure release
It is minimum there is no rubbing or rubbing between head, to directly allow each sealing plate on central siphon and central siphon to be detached from steel modeling crossover sub i.e.
It can.After the form for using gas-flow closure circle, " three sections of detections "（Lengths of steel pipes, modeling pipeline section, linkage section）Baroceptor is observed to read
When number, first there is apparent pressure drop in the baroceptor in which section（Beyond zone of reasonableness）, which section gas leakage just illustrated, is existed
Crack or seal defect.
The central siphon is equipped with the pressure release gas vent 2d being connected to central siphon inside, and band moving frame is tied with central siphon by rubbing to drive
Structure connects, and friction driving structure includes promoting limit body 541, retracting limit body 542, friction band rotating ring 543, several push-pull rods
544, push-pull rod is horizontal and push-pull rod one end connect band moving frame, the connection of the push-pull rod other end rub with rotating ring, friction band moving ring sleeve
It is located on central siphon and coaxial with central siphon, friction band rotating ring can move horizontally on central siphon, and friction band rotating ring inner ring surface, which is equipped with, to rub
Seal groove is wiped, friction sealed slot is equipped with drag seal 5431, and drag seal is coaxial with central siphon, drag seal and central siphon
It is squeezed mutually between lateral wall, promotes limit body, retracts limit body and be in that central siphon is outer and fixed with central siphon, and limit base has
The level interval of sealing plate confined planes for limiting end-plate outside steel pipe, the outer end-plate of steel pipe and limit base is less than or equal to steel pipe
The level interval of outer end-plate and central siphon, between pressure release gas vent is in propulsion limit body and retracts limit body, friction band rotating ring
It is between promoting limit body and retracting limit body, when friction band rotating ring contact promotes limit body, drag seal seals pressure release
Gas vent；When friction band rotating ring contact retracts limit body, drag seal is detached with pressure release gas vent.The propulsion limit body is in
Ring-type, the limit body that retracts is annular in shape, promotes limit body coaxial with central siphon, it is coaxial with central siphon to retract limit body.Promote limit
Body is in modeling and manages between outer end-plate and friction band rotating ring, retracts limit body and is in friction band rotating ring and between moving frame.
This programme can realize pressurization protection and releasing pressure automatically.When needing to be detected, end socket piston rod stretches out, and passes through band
Moving frame, push-pull rod carry out band dynamic friction and drive ring set movement, since there is drag seal between friction band moving ring sleeve and central siphon, and
Mutual extrusion friction between drag seal and central siphon lateral wall, so friction band moving ring sleeve can be straight by drag seal at this time
Tape splicing moving axis pipe moves, and so that central siphon is entered steel together with each sealing plate and moulds crossover sub, waits for that the outer end-plate of steel pipe touches limit base
On sealing plate confined planes after, central siphon positioning cannot move on, and the band rotating ring that rubs can continue to push and be advanced until and touch
Limit body, end socket cylinder body is promoted to be stopped（Pressure release gas vent is sealed by drag seal at this time）.In the present solution, only completing
The entirety of central siphon and each sealing plate is stretched into, is positioned, and pressure release gas vent can just be sealed by drag seal, just can smoothly allow central siphon
Inflation, pressurize are realized in interior, each sealing ring, to can just be detected.And after the completion of detecting, end socket piston rod is directly withdrawn,
Since each sealing ring is in swelling state at this time, tightly it is affixed between moulding crossover sub with steel, so central siphon is equal together with each sealing plate
It can not move, end socket piston rod can only will be rubbed and be retracted with rotating ring by band moving frame, push-pull rod, until friction band rotating ring contact drawing
Limit body is returned, and in the process, drag seal can leave pressure release gas vent, and in central siphon, gas can be discharged in each sealing ring,
In each sealing ring after gas discharge, sealing effect disappears, and steel is moulded in crossover sub（That is in three seal sections）Gas can also arrange
Go out（It is no longer tightly affixed between each sealing ring and steel modeling crossover sub at this time）, to continue to withdraw with end socket piston rod,
Central siphon can also be drawn out together with each sealing plate, be detached from steel modeling crossover sub.It is dynamic that the above process eliminates all extra pressure releases
Make（Separation, docking operation such as air supply pipe and air feed pump）, disposably realize first release stress, delay pulls out the dynamic of central siphon afterwards
Make, whole process is reasonable, coherent, efficient.
The central siphon lateral wall is equipped with external screw thread, and steel pipe inner end sealing plate inner ring surface, modeling pipe inner end sealing plate inner ring surface are logical
It crosses internal thread to be connected with the external screw thread on central siphon lateral wall, central siphon is equipped with inflating port 2e in first, inflating port in second
2f, inflating port in first, in second inflating port be connected to inside central siphon；The first air flue 24a is equipped in the sealing plate of steel pipe inner end, the
One air flue outer end opening is opened on steel pipe inner end sealing plate inner ring surface, steel pipe in steel pipe inner end sealing plate outer ring surface, the first air flue inner end
Inner ring gas tube one end is connected to steel pipe inner seal ring inner inflatable chamber, the steel pipe inner ring gas tube other end is from the first air flue outer end
It stretches into the first air flue, is sealed between steel pipe inner ring gas tube outer tube wall and the air flue inner wall of the first air flue, the first air flue inner end
It inflating port and is connected to inflating port in first in face first；It moulds and is equipped with the second air flue 23a in the sealing plate of pipe inner end, outside the second air flue
For end opening in modeling pipe inner end sealing plate outer ring surface, the second air flue inner end is opened on modeling pipe inner end sealing plate inner ring surface, modeling pipe inner ring inflation
Pipe one end is connected to modeling pipe inner seal ring inner inflatable chamber, moulds the pipe inner ring gas tube other end and stretch into first from the second air flue outer end
In air flue, moulds and sealed between pipe inner ring gas tube outer tube wall and the air flue inner wall of the second air flue, the second air flue inner end face second
It interior inflating port and is connected to inflating port in second.Steel pipe inner seal ring is fixed on steel pipe inner panel annular groove, and modeling pipe inner seal ring is solid
It is scheduled on modeling pipe inner panel annular groove.After having segmentation detection function, the whole detection inside steel modeling crossover sub can be still carried out,
Before needing to carry out the inside overall tightness detection of steel modeling crossover sub, turn steel pipe inner end sealing plate, modeling pipe inner end sealing plate are only needed,
The first air flue inner end is allowed to be misaligned with inflating port in first, not be connected to, inflating port is allowed in the second air flue inner end and second to be misaligned,
Be not connected to, thus, be inflated again, pressurize, detection when, only steel pipe exterior seal ring and modeling pipe exterior seal ring play sealing
Effect, so as to realize the overall tightness detection inside steel modeling crossover sub（Remaining step is identical as segmentation detection）.It is whole
After the completion of physical examination is surveyed, segmentation detection is if desired carried out again, then first turn steel pipe inner end sealing plate, modeling pipe inner end sealing plate, make in steel pipe
End-plate, modeling pipe inner end seals sheet reset can re-start segmentation detection.
In addition, there is minimum probability, it may appear that following situations：Steel moulds the leakage position on crossover sub, just by connector
The detection location structure such as supporting rack, positioning plate blocks, and gas leakage, needle are not detected among out so as to cause these leakage positions when detection
If further increasing testing result accuracy in this regard, wanting to improve, steel modeling crossover sub can be existed after the completion of one-time detection
Connection supports frame upper edge steel moulds crossover sub axis and rotates an angle, such as 20 degree, thus, connection supports frame, positioning plate
Or on positioning plate for contact the structure etc. of steel modeling crossover sub be contacted again steel modeling crossover sub position can with it is preceding primary
Contact position it is different, in conjunction with testing result twice, so that it may with must tap mould crossover sub leakproofness whether the conclusion of qualification.
Claims (4)
1. a kind of closure detection device, including main engine bed, air feed pump, characterized in that further include blocking cylinder, compression cylinder, limit
Position seat, one closed at both ends and horizontal central siphon, is used to support steel modeling crossover sub and steel modeling crossover sub axis is made to be in water
The connection supports frame of level state blocks cylinder, compression cylinder, connection supports frame and is arranged on main engine bed, the closure cylinder
Including end socket cylinder body, end socket the cylinder piston, end socket piston rod, the scalable direction of end socket piston rod is horizontal, and compression cylinder includes pressure
Tight cylinder body compresses the cylinder piston, clamping piston bar, and the scalable direction of clamping piston bar is vertical, and clamping piston bar is equipped with and is used for
The positioning plate of steel modeling crossover sub is compressed, positioning plate is in above connection supports frame, and end socket piston rod is equipped with for band moving axis
The band moving frame that pipe is axially moved horizontally along central siphon, central siphon are equipped with cricoid modeling and manage the outer end-plate of outer end-plate, cricoid steel pipe,
Modeling manages outer end-plate peripheral surface and is equipped with modeling pipe outside plate annular groove, and the outer end-plate peripheral surface of steel pipe is equipped with steel pipe outside plate annular groove, modeling
The outer end-plate of the outer end-plate of pipe, steel pipe, modeling pipe outside plate annular groove, steel pipe outside plate annular groove are coaxial with central siphon, mould on pipe outside plate annular groove
Equipped with the modeling pipe exterior seal ring for moulding crossover sub inner wall for contacting steel, steel pipe outside plate annular groove is equipped with for contacting steel modeling conversion
The steel pipe exterior seal ring of inner nosepiece wall, central siphon are equipped with the first air inlet being connected to central siphon inside, and the first air inlet is equipped with
First breather check valve, the first breather check valve can be by outside central siphon, central siphon outer wall is equipped with the in central siphon by direction
One baroceptor, between the steel modeling crossover sub that connection supports frame is supported is in limit base and blocks cylinder, air feed pump
By being connected to inside air supply pipe and central siphon, limit base is equipped with the elastic ring for contacting steel modeling crossover sub one end at gas supply end,
The positioning plate lower surface is equipped with the rubber clamping pad that crossover sub is moulded for contacting steel；
The central siphon is equipped with cricoid modeling pipe inner end sealing plate, cricoid steel pipe inner end sealing plate, moulds on the sealing plate peripheral surface of pipe inner end
Equipped with modeling pipe inner panel annular groove, steel pipe inner end sealing plate peripheral surface is equipped with steel pipe inner panel annular groove, and modeling pipe inner panel annular groove, which is equipped with, to be used for
The modeling pipe inner seal ring of steel modeling crossover sub inner wall is contacted, steel pipe inner panel annular groove is equipped with moulds crossover sub inner wall for contacting steel
Steel pipe inner seal ring, modeling pipe inner end sealing plate, steel pipe inner end sealing plate, modeling pipe inner panel annular groove, steel pipe inner panel annular groove are same with central siphon
Axis, modeling pipe inner end sealing plate are between steel pipe inner end sealing plate and the outer end-plate of modeling pipe, and steel pipe inner end sealing plate is in modeling pipe inner end seals
Between the outer end-plate of plate and steel pipe, central siphon is equipped with the be connected to the second air inlet be connected to inside central siphon, with central siphon inside
Three air inlets, central siphon outer wall are equipped with the second baroceptor, third baroceptor, the first air inlet and the first air pressure sensing
Device is in outside steel pipe between end-plate and steel pipe inner end sealing plate, and the second air inlet and the second baroceptor are in steel pipe
Between end-plate and modeling pipe inner end sealing plate, third air inlet is in modeling pipe inner end sealing plate with third baroceptor and modeling pipe is outer
Between end-plate, the second air inlet be equipped with the second breather check valve, third air inlet be equipped with third breather check valve, second
Breather check valve can by direction, third breather check valve can be by direction by central siphon to outside central siphon；
The steel pipe exterior seal ring, steel pipe inner seal ring, modeling pipe inner seal ring, modeling pipe exterior seal ring are internal with inflatable chamber
Gas-flow closure circle, the outer end-plate of steel pipe is equipped with outside the steel pipe for being connected to steel pipe exterior seal ring inner inflatable chamber with central siphon inside
Gas tube is enclosed, steel pipe inner end sealing plate, which is equipped with, fills the steel pipe inner ring being connected to inside steel pipe inner seal ring inner inflatable chamber and central siphon
Tracheae, modeling pipe inner end sealing plate are equipped with the modeling pipe inner ring that will be moulded and be connected to inside pipe inner seal ring inner inflatable chamber and central siphon and inflate
Pipe, modeling manage outer end-plate and are equipped with the modeling pipe outer ring gas tube that will be moulded and be connected to inside pipe exterior seal ring inner inflatable chamber and central siphon；
The central siphon is equipped with the pressure release gas vent being connected to central siphon inside, and band moving frame is connected with central siphon by the driving structure that rubs
It connects, friction driving structure includes promoting limit body, retracting limit body, friction band rotating ring, several push-pull rods, and push-pull rod is horizontal and pushes away
Pull rod one end connect band moving frame, push-pull rod other end connection friction band rotating ring, friction band moving ring sleeve is located on central siphon and and central siphon
Coaxially, friction band rotating ring can move horizontally on central siphon, and friction band rotating ring inner ring surface is equipped with friction sealed slot, friction sealed slot
It is equipped with drag seal, drag seal is coaxial with central siphon, is squeezed mutually between drag seal and central siphon lateral wall, promotes
Limit body retracts limit body and is in that central siphon is outer and fixed with central siphon, and limit base has for limiting end-plate outside steel pipe
Sealing plate confined planes, between pressure release gas vent is in propulsion limit body and retracts limit body, friction band rotating ring is in propulsion limit body
Between retracting limit body, when friction band rotating ring contact promotes limit body, drag seal seals pressure release gas vent；Friction drives
When ring contact retracts limit body, drag seal is detached with pressure release gas vent；
The central siphon lateral wall is equipped with external screw thread, and steel pipe inner end sealing plate inner ring surface, modeling pipe inner end sealing plate inner ring surface pass through interior
External screw thread on screw thread and central siphon lateral wall is connected, and central siphon is equipped with inflating port in first, inflating port in second, in first
Inflating port, in second inflating port be connected to inside central siphon；The first air flue is equipped in the sealing plate of steel pipe inner end, the first air flue outer end is opened
For mouth in steel pipe inner end sealing plate outer ring surface, the first air flue inner end is opened on steel pipe inner end sealing plate inner ring surface, steel pipe inner ring gas tube one
End is connected to steel pipe inner seal ring inner inflatable chamber, the steel pipe inner ring gas tube other end stretches into the first air flue from the first air flue outer end
It is interior, it seals between steel pipe inner ring gas tube outer tube wall and the air flue inner wall of the first air flue, is filled in the first air flue inner end face first
It gas port and is connected to inflating port in first；It moulds and is equipped with the second air flue in the sealing plate of pipe inner end, the second air flue outer end opening is in modeling pipe
End-plate outer ring surface, the second air flue inner end are opened on modeling pipe inner end sealing plate inner ring surface, mould pipe inner ring gas tube one end and mould in pipe
The connection of sealing ring inner inflatable chamber, the modeling pipe inner ring gas tube other end are stretched into from the second air flue outer end in the first air flue, are moulded in pipe
It is sealed between circle gas tube outer tube wall and the air flue inner wall of the second air flue, inflating port and with the in the second air flue inner end face second
Inflating port is connected in two.
2. a kind of closure detection device according to claim 1, characterized in that the connection supports frame includes horizontal branch
Bottom plate, two vertical and parallel to each other supporting vertical plates are supportted, supporting vertical plate is equipped with the V-arrangement branch that crossover sub is moulded for accommodating steel
Support slot, V-arrangement support slot it is opening up, supporting vertical plate lower end is fixed with support baseboard top surface.
3. a kind of closure detection device according to claim 1, characterized in that the propulsion limit body is annular in shape, described
It is annular in shape to retract limit body, promotes limit body coaxial with central siphon, it is coaxial with central siphon to retract limit body.
4. a kind of closure detection device according to claim 1 or 3, characterized in that the connection supports frame was supported
Steel moulds the steel pipe end of crossover sub towards limit base, promotes limit body to be in modeling and manages between outer end-plate and friction band rotating ring, draws
It returns limit body and is in friction band rotating ring and between moving frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610182495.3A CN105716805B (en) | 2016-03-26 | 2016-03-26 | A kind of closure detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610182495.3A CN105716805B (en) | 2016-03-26 | 2016-03-26 | A kind of closure detection device |
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| CN105716805B true CN105716805B (en) | 2018-08-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108279099B (en) * | 2018-01-24 | 2019-07-26 | 重庆万协管业科技有限公司 | A kind of gas pipeline wall defects detection device |
| CN110375968A (en) * | 2019-05-22 | 2019-10-25 | 武汉船用机械有限责任公司 | Pump pressure frock for irregular barrel |
| CN113758656B (en) * | 2020-06-03 | 2024-01-30 | 中国石油天然气股份有限公司 | Double-hollow rod capable of detecting leakage and leakage detecting method of double-hollow rod |
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| GB201435A (en) * | 1922-09-04 | 1923-08-02 | British Mannesmann Tube Compan | Appliance for testing pipe joints and the like |
| CN2565012Y (en) * | 2002-08-09 | 2003-08-06 | 新兴铸管股份有限公司 | Special pressure testing device for steel-plastic composite pipe |
| CN102133704A (en) * | 2011-01-08 | 2011-07-27 | 山东莱阳市昌誉密封产品有限公司 | Oil seal press mounting and detection system |
| CN202622293U (en) * | 2012-02-20 | 2012-12-26 | 台州学院 | Engine hoop pin and oil seal pressing-in device |
| CN204679232U (en) * | 2015-06-26 | 2015-09-30 | 宁波市宇华电器有限公司 | A kind of pipe fitting proving installation |
| CN105203274A (en) * | 2015-10-15 | 2015-12-30 | 宁波新合博园林机械有限公司 | Pipe fitting sealing property testing device |
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Address after: Yuyao City Simen Town Guangming Road 315470 Zhejiang city of Ningbo province No. 126 Applicant after: CHINA JILIANG UNIVERSITY Address before: Yuyao City Simen Town Guangming Road 315470 Zhejiang city of Ningbo province No. 126 Applicant before: China Jiliang University |
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Address after: 313300 comprehensive building of Anji County Science and technology entrepreneurship Park, Sunshine Industrial Park, Dipu Town, Anji County, Huzhou City, Zhejiang Province Patentee after: China Jiliang University Address before: 126 Guangming Road, Si gate town, Ningbo City, Zhejiang 315470, Yuyao Patentee before: China Jiliang University |