CN105666100A - Sealing tester - Google Patents
Sealing tester Download PDFInfo
- Publication number
- CN105666100A CN105666100A CN201610183677.2A CN201610183677A CN105666100A CN 105666100 A CN105666100 A CN 105666100A CN 201610183677 A CN201610183677 A CN 201610183677A CN 105666100 A CN105666100 A CN 105666100A
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- CN
- China
- Prior art keywords
- pipe
- central siphon
- mould
- steel
- steel pipe
- Prior art date
- Legal status (The legal status 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 status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
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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
Abstract
The invention discloses a sealing tester. The sealing tester comprises a main engine base, a gas supply pump, a sealing air cylinder, a pressing air cylinder, a shaft tube, a limiting base and a joint supporting frame, wherein a positioning plate is arranged on a pressing piston rod; a drive frame is arranged on an end enclosure piston rod; a plastic tube outer end sealing plate, a steel tube outer end sealing plate, a plastic tube outer sealing ring and a steel tube outer sealing ring are arranged on the shaft tube; a first gas inlet is formed in the shaft tube; a first gas inlet one-way valve is arranged on the first gas inlet; a first gas pressure sensor is arranged on the outer wall of the shaft tube; a steel-plastic conversion joint supported by the joint supporting frame is positioned between the limiting base and the sealing air cylinder; and the gas supply end of the gas supply pump communicates with the inner part of the shaft tube through the gas supply tube. The sealing tester has the beneficial effects that: the integral structure is reasonable, the positioning and the clamping of the steel-plastic conversion joint are achieved, the sealing property can be guaranteed while the steel-plastic conversion joint is not damaged; and the sealing tester has a sealing structure which can be regulated in a self-adapting manner, and can strengthen the sealing effect during high gas pressure detecting.
Description
Technical field
The invention belongs to pipe fitting joint close property technical field of measurement and test, particularly relate to a kind of envelope pressure test machine.
Background technology
Adapter moulded by steel, adapter is moulded also known as PE steel, it is widely used among current production, life, (outer combustion gas pipeline mostly is PE pipeline such as steel will to be used in a large number to mould adapter in combustion gas, natural gas transportation pipeline, then it mostly is steel pipe in inlet chamber, switching process needs utilize steel to mould adapter). adapter moulded by steel, itself comprise lengths of steel pipes (one section of steel pipe) and mould pipeline section (being generally one section of PE pipe), formation linkage section is docked in one end of lengths of steel pipes with the one end moulding pipeline section, linkage section is many to be formed with moulding the clamping of pipeline section one end by lengths of steel pipes one end, and (linkage section would generally arrange some concaveconvex structures and coordinate clamping to utilize sealing ring to carry out sealing, as the flange in lengths of steel pipes engages mutually with the draw-in groove moulded on pipeline section, anchor ear can also be arranged outside linkage section hold tightly further), the front of motor of lengths of steel pipes is called steel pipe end, mould the front of motor of pipeline section to be called and mould pipe end, mould pipe end and can mould pipe (PE pipe) welding with waiting to dock, steel pipe end can with treat docking steel tube screw thread be connected, weld or docked by other structure. mould adapter due to steel and be applied to gas, liquid transportation art, so its sealing needs to be guaranteed, before dispatching from the factory, it will be carried out sealing propertytest.
Steel is moulded adapter when detecting by prior art, generally adopt sealing gasket or sealing ring to be placed in steel and mould the outside at adapter two ends (steel pipe end and mould pipe end), it is clamped in steel with the force application apparatus such as jack or hydraulic cylinder simultaneously and moulds adapter two ends, so that sealing gasket or sealing ring and steel mould two ends of adapter forms sealing, steel after whole sealing is moulded adapter be immersed in the water, then mould toward steel pass into inside adapter compression its sealing property of gas examination.
Above-mentioned test method has the disadvantages that 1, operating process is complicated, its frame heavier-weight, frame need to be immersed in the water by external equipment, and steel is moulded the installation of adapter and also comparatively bothered, 2, adopt pressing plate under jack thus steel being moulded adapter and sealing and sealing ring is placed in steel and moulds outside adapter two ends, and with hydraulic cylinder (or cylinder) be clamped in steel mould adapter two ends seal time, the all more difficult control of the dynamics of both, the words that the lower power pressed or clamp is inadequate, steel may be made to mould the sealing of adapter end not firm, thus affecting the accuracy of test, bring qualitative erroneous judgement, the words that the lower power pressed or clamp is excessive, steel can be made to mould adapter deform, cause that adapter end face (pipe end) out-of-flatness moulded by steel, so that steel is moulded cannot form sealing between adapter and pressing plate, bring qualitative erroneous judgement, additionally, the words that the lower power pressed or clamp is excessive, it is likely to directly damage steel and moulds adapter.
Summary of the invention
The present invention is to overcome deficiency of the prior art, it is provided that a kind of reasonable integral structure, and easy to operate, test result accuracy is high, and can guarantee that the envelope pressure test machine that two pipe ends of adapter are not easily damaged by folder moulded by steel.
To achieve these goals, the present invention is by the following technical solutions:
A kind of envelope pressure test machine, including main engine bed, air feed pump, also include closure cylinder, compression cylinder, the central siphon of a piece closed at both ends and level, the limit base of adapter one end is moulded for contacting steel, mould adapter for supporting steel and make steel mould adapter axis to be in the connection supports frame of level, closure cylinder, compression cylinder, connection supports frame is arranged on main engine bed, described closure cylinder includes end socket cylinder body, end socket cylinder piston, end socket piston rod, the scalable direction level of end socket piston rod, compression cylinder includes compressing cylinder body, hold-down cylinder piston, clamping piston bar, the scalable direction of clamping piston bar is vertical, clamping piston bar is provided with the location-plate moulding adapter for compressing steel, location-plate is in above connection supports frame, end socket piston rod is provided with the band moving frame for driving central siphon axially to move horizontally along central siphon, central siphon is provided with moulding of ring-type and manages outer end-plate, the outer end-plate of the steel pipe of ring-type, mould the outer end-plate outer peripheral face of pipe to be provided with and mould pipe outside plate annular groove, the outer end-plate outer peripheral face of steel pipe is provided with steel pipe outside plate annular groove, mould the outer end-plate of pipe, the outer end-plate of steel pipe, mould pipe outside plate annular groove, steel pipe outside plate annular groove is all coaxial with central siphon, mould pipe outside plate annular groove to be provided with and mould pipe exterior seal ring for what contact that steel moulds adapter inwall, steel pipe outside plate annular groove is provided with the steel pipe exterior seal ring moulding adapter inwall for contacting steel, central siphon is provided with first air inlet that connect internal with central siphon, first air inlet is provided with the first breather check valve, Tong Guo the direction of the first breather check valve be by central siphon to outside central siphon, central siphon outer wall is provided with the first baroceptor, the steel that connection supports frame supports is moulded adapter and is between limit base and closure cylinder, the supply end of air feed pump connects by air supply pipe and central siphon are internal, described mainframe is provided with supporting guide, supporting guide is provided with support bar, support bar lower end and supporting guide are slidably connected, the slidably direction of support bar is parallel with the movable direction of central siphon, post upper connects band moving frame, described location-plate lower surface is provided with the rubber clamping pad moulding adapter for contacting steel.
As preferably, described connection supports frame includes the support baseboard of level, two supporting vertical plate vertical and parallel to each other, supporting vertical plate is provided with the V-arrangement support slot moulding adapter for holding steel, V-arrangement support slot opening up, and supporting vertical plate lower end and support baseboard end face are fixed.
As preferably, what described central siphon was provided with ring-type moulds pipe the inner shrouding, steel pipe the inner shrouding of ring-type, mould pipe the inner shrouding outer peripheral face to be provided with and mould pipe inner panel annular groove, steel pipe the inner shrouding outer peripheral face is provided with steel pipe inner panel annular groove, mould pipe inner panel annular groove to be provided with and mould pipe inner seal ring for what contact that steel moulds adapter inwall, steel pipe inner panel annular groove is provided with the steel pipe inner seal ring moulding adapter inwall for contacting steel, mould pipe the inner shrouding, steel pipe the inner shrouding, mould pipe inner panel annular groove, steel pipe inner panel annular groove is all coaxial with central siphon, mould pipe the inner shrouding be in steel pipe the inner shrouding and mould between the outer end-plate of pipe, steel pipe the inner shrouding is in be moulded between pipe the inner shrouding and the outer end-plate of steel pipe, central siphon is provided with second air inlet that connect internal with central siphon, threeth air inlet that connect internal with central siphon, central siphon outer wall is provided with the second baroceptor, 3rd baroceptor, it is outer between end-plate and steel pipe the inner shrouding that first air inlet and the first baroceptor are all in steel pipe, second air inlet and the second baroceptor are all in steel pipe the inner shrouding and mould between the shrouding of pipe the inner, 3rd air inlet and the 3rd baroceptor are all in be moulded pipe the inner shrouding and moulds between the outer end-plate of pipe, second air inlet is provided with the second breather check valve, 3rd air inlet is provided with the 3rd breather check valve, the direction passed through of the second breather check valve, Tong Guo the direction of the 3rd breather check valve all for by central siphon to outside central siphon.
As preferably, described steel pipe exterior seal ring, steel pipe inner seal ring, mould pipe inner seal ring, mould pipe exterior seal ring to be inside there is the gas-flow closure circle of inflatable chamber, the outer end-plate of steel pipe is provided with internal to steel pipe exterior seal ring inner inflatable chamber and the central siphon steel pipe outer ring gas tube connected, steel pipe the inner shrouding is provided with internal to steel pipe inner seal ring inner inflatable chamber and the central siphon steel pipe inner ring gas tube connected, mould pipe the inner shrouding be provided with by mould pipe inner seal ring inner inflatable chamber and central siphon internal connect mould pipe inner ring gas tube, mould manage outer end-plate be provided with by mould connect inside pipe exterior seal ring inner inflatable chamber and central siphon mould pipe outer ring gas tube.
As preferably, described central siphon is provided with the pressure release steam vent that connect internal with central siphon, band moving frame is connected by the driving structure that rubs with central siphon, friction driving structure includes advancing limit body, retract limit body, friction belt rotating ring, some push-pull bars, push-pull bar level and push-pull bar one end connect band moving frame, the push-pull bar other end connects friction belt rotating ring, friction belt moving ring sleeve is located on central siphon and coaxial with central siphon, friction belt rotating ring can move horizontally on central siphon, friction belt rotating ring inner ring surface is provided with friction sealed groove, friction sealed groove is provided with drag seal, drag seal is coaxial with central siphon, extrude mutually between drag seal and central siphon lateral wall, advance limit body, retract limit body be all in outside central siphon and all fix with central siphon, limit base has the shrouding confined planes for the outer end-plate of spacing steel pipe, pressure release steam vent is in propelling limit body and retracts between limit body, friction belt rotating ring is in propelling limit body and retracts between limit body, when the contact of friction belt rotating ring advances limit body, drag seal seals pressure release steam vent, when the contact of friction belt rotating ring retracts limit body, drag seal separates with pressure release steam vent.
As preferably, described propelling limit body in the form of a ring, described in retract limit body in the form of a ring, advance limit body coaxial with central siphon, retract limit body coaxial with central siphon.
As preferably, described air supply pipe is by connecting from break-make admission line and central siphon inside, one end of the supply end connection air supply pipe of air feed pump, the other end of air supply pipe connects from one end of break-make air inlet pipe, connect from the other end of break-make air inlet pipe and central siphon inside, friction belt rotating ring is provided with one piece of break-make transverse slat, the traverse of break-make transverse slat coordinates from break-make air inlet pipe and with from break-make air inlet pipe slipper seal, break-make transverse slat is provided with plate passage, when the contact of friction belt rotating ring advances limit body, plate passage connects with the inner passage from break-make air inlet pipe; When the contact of friction belt rotating ring retracts limit body, break-make transverse slat will cut off from the inner passage of break-make air inlet pipe.
As preferably, described central siphon lateral wall is provided with external screw thread, steel pipe the inner shrouding inner ring surface, mould pipe the inner shrouding inner ring surface and be connected each through the external screw thread on female thread and central siphon lateral wall, central siphon is provided with in first inflation inlet, inflation inlet in second, and inflation inlet in first, inflation inlet is all internal with central siphon in second connects; It is provided with the first air flue in the shrouding of steel pipe the inner, first air flue outer end opening is in steel pipe the inner shrouding outer ring surface, first air flue the inner is opened on steel pipe the inner shrouding inner ring surface, steel pipe inner ring gas tube one end connects with steel pipe inner seal ring inner inflatable chamber, the steel pipe inner ring gas tube other end stretches in the first air flue from the first air flue outer end, seal between steel pipe inner ring gas tube outer tube wall and the air flue inwall of the first air flue, rectify in the first air flue inflation inlet in first and connect with inflation inlet in first; Mould in the shrouding of pipe the inner and be provided with the second air flue, second air flue outer end opening is in moulding pipe the inner shrouding outer ring surface, second air flue the inner is opened on moulds pipe the inner shrouding inner ring surface, mould pipe inner ring gas tube one end and mould pipe inner seal ring inner inflatable chamber and connect, mould the pipe inner ring gas tube other end and stretch in the first air flue from the second air flue outer end, mould and seal between pipe inner ring gas tube outer tube wall and the air flue inwall of the second air flue, rectify in the second air flue inflation inlet in second and connect with inflation inlet in second.
As preferably, the steel that connection supports frame supports moulds the steel pipe end of adapter towards limit base, and described propelling limit body is in be moulded between the outer end-plate of pipe and friction belt rotating ring, retracts limit body and is between friction belt rotating ring and band moving frame.
The invention has the beneficial effects as follows: reasonable integral structure, location and clamping that steel is moulded adapter put in place, can ensure sealing but will not press from both sides damage steel and mould adapter; Have can the sealing structure of Automatic adjusument, sealing effectiveness during hyperbar detection can be strengthened, maintain the stability of detection process; Disposable can carrying out many places to detect targetedly, efficiency is high, effective; Possessing the control structure of multiple protective structure and coordinated type, it is possible to avoid the problem that various maloperation causes, and action seriality is good, work efficiency is high, and detection process is smooth efficiently.
Accompanying drawing explanation
Fig. 1 is the structural representation of the present invention;
Fig. 2 is the structural representation of inventive joint bracing frame;
Fig. 3 is the enlarged drawing at A place in Fig. 1;
Fig. 4 is the enlarged drawing at B place in Fig. 1;
Fig. 5 is the enlarged drawing at C place in Fig. 1;
Fig. 6 is the enlarged drawing at D place in Fig. 1;
Fig. 7 is the enlarged drawing at E place in Fig. 1.
In figure: air feed pump 1, air supply pipe 11, travelling carriage 12, pump link 13, support slide rail 14, central siphon 2, mould the outer end-plate 21 of pipe, mould pipe exterior seal ring 211, mould pipe outer ring gas tube 212, the outer end-plate 22 of steel pipe, steel pipe exterior seal ring 221, steel pipe outer ring gas tube 222, mould pipe the inner shrouding 23, mould pipe inner seal ring 231, mould pipe inner ring gas tube 232, second air flue 23a, steel pipe the inner shrouding 24, steel pipe inner seal ring 241, steel pipe inner ring gas tube 242, first air flue 24a, first air inlet 2a, second air inlet 2b, 3rd air inlet 2c, pressure release steam vent 2d, inflation inlet 2e in first, inflation inlet 2f in second, limit base 3, connection supports frame 4, support baseboard 41, supporting vertical plate 42, V-arrangement support slot 43, end socket cylinder body 51, end socket piston rod 52, band moving frame 53, advance limit body 541, retract limit body 542, friction belt rotating ring 543, drag seal 5431, push-pull bar 544, compress cylinder body 61, clamping piston bar 62, location-plate 63, rubber clamping pad 631, mould pipeline section 71, lengths of steel pipes 72, supporting guide 81, support bar 82.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described.
In embodiment as shown in Figures 1 to 7, a kind of envelope pressure test machine, including main engine bed, air feed pump 1, also include closure cylinder, compression cylinder, the central siphon 2 of a piece closed at both ends and level, the limit base 3 of adapter one end is moulded for contacting steel, mould adapter for supporting steel and make steel mould adapter axis to be in the connection supports frame 4 of level, closure cylinder, compression cylinder, connection supports frame is arranged on main engine bed, described closure cylinder includes end socket cylinder body 51, the end socket cylinder piston coordinated with end socket cylinder body slipper seal, the end socket piston rod 52 being connected with end socket cylinder piston, the scalable direction level of end socket piston rod level and end socket piston rod, compression cylinder includes compressing cylinder body 61, the hold-down cylinder piston coordinated with compression cylinder body slipper seal, the clamping piston bar 62 being connected with hold-down cylinder piston, vertical and clamping piston bar the scalable direction of clamping piston bar is vertical, clamping piston bar is provided with the location-plate 63 moulding adapter for compressing steel, location-plate is in above connection supports frame, end socket piston rod is provided with the band moving frame 53 for driving central siphon axially to move horizontally along central siphon, central siphon is provided with moulding of ring-type and manages outer end-plate 21, the outer end-plate 22 of the steel pipe of ring-type, mould the outer end-plate outer peripheral face of pipe to be provided with and mould pipe outside plate annular groove, the outer end-plate outer peripheral face of steel pipe is provided with steel pipe outside plate annular groove, mould the outer end-plate of pipe, the outer end-plate of steel pipe, mould pipe outside plate annular groove, steel pipe outside plate annular groove is all coaxial with central siphon, mould pipe outside plate annular groove to be provided with and mould pipe exterior seal ring 211 for what contact that steel moulds adapter inwall, steel pipe outside plate annular groove is provided with the steel pipe exterior seal ring 221 moulding adapter inwall for contacting steel, central siphon is provided with the first air inlet 2a that connect internal with central siphon, first air inlet is provided with the first breather check valve, Tong Guo the direction of the first breather check valve be by central siphon to outside central siphon, central siphon outer wall is provided with the first baroceptor, the steel that connection supports frame supports is moulded adapter and is between limit base and closure cylinder, the supply end of air feed pump connects by air supply pipe 11 and central siphon are internal, described mainframe is provided with supporting guide 81, supporting guide is provided with support bar 82, support bar lower end and supporting guide are slidably connected, support bar level can slide on supporting guide, the slidably direction of support bar is parallel with the movable direction of central siphon, post upper connects band moving frame, described location-plate lower surface is provided with the rubber clamping pad 631 moulding adapter for contacting steel. connectivity part within air supply pipe and central siphon is being moulded between the outer end-plate of pipe and closure cylinder. the reading display end of the first baroceptor is in tested steel and moulds outside adapter. the steel that described connection supports frame supports moulds the steel pipe end of adapter towards limit base. air feed pump is arranged on a travelling carriage 12, and air feed pump is connected with central siphon by pump link 13, and main engine bed is provided with support slide rail 14, and travelling carriage is slidably matched with supporting slide rail, the slidably direction level of travelling carriage. support slide rail can be assisted and air feed pump, band moving frame etc. are supported, it is prevented that end socket piston rod load (especially downward power) is excessive, can carry out auxiliary guiding simultaneously, improve work process stability.
Steel moulds the lengths of steel pipes 72 of adapter with to mould pipeline section 71 internal diameter not necessarily identical, as a rule, mould pipeline section internal diameter slightly larger than lengths of steel pipes internal diameter (also have in particular cases lengths of steel pipes internal diameter more than moulding pipeline section internal diameter, here only state for normal conditions, and lengths of steel pipes internal diameter is more than moulding under the situation of pipeline section internal diameter, Cleaning Principle is also identical). connection supports frame can be placed steel mould adapter (be as a rule by lengths of steel pipes frame on connection supports frame, or pipeline section frame will be moulded on connection supports frame), steel is moulded adapter one end (steel pipe end) against limit base (steel pipe end in contact limit base, limit base is not seal structure, without sealing steel pipe end), clamping piston bar drives location-plate to move down, rubber clamping pad contact steel on location-plate lower surface is moulded adapter and steel is moulded adapter fixes and (contact steel with rubber clamping pad to mould adapter and be possible to prevent location-plate crushing and scratch steel to mould adapter, and the contact of rubber clamping pad compresses effect more preferably), stretch out with rear head piston rod, by driving moulding on central siphon and central siphon to manage outer end-plate with moving frame, the outer end-plate of steel pipe stretches into steel together and moulds in adapter, reach to mould the outer end-plate of pipe to be in and mould pipe end (moulding pipeline section interior), the outer end-plate of steel pipe is in the state of steel pipe end (in lengths of steel pipes), and mould pipe exterior seal ring and coordinate to mould and manage outer end-plate and steel is moulded the pipe end of moulding of adapter seal, steel pipe exterior seal ring coordinates the steel pipe end that adapter moulded by steel by the outer end-plate of steel pipe to seal. then air feed pump can be utilized by air supply pipe, central siphon inside to be supplied, gas enters steel through the first air inlet and moulds in adapter, after certain pressure value to be achieved, (this force value can be set according to gas time actually used or fluid pressure, generally can be atmospheric 1 to 8 times), stop supply and (generally carry check valve due to air feed pump, so steel is moulded in adapter, gas in central siphon will not from air feed pump backflow and leakage, according to the air feed pump without check valve, then need the supply end at air feed pump that check valve or on-off valve are set, after stopping the supple of gas or steam with guarantee, steel is moulded in adapter, gas in central siphon will not reflux). until tested steel mould adapter internal gas pressure basicly stable after, the reading display end of continuous observation the first baroceptor, if in a period of time, numerical value is unchanged or change in value in the reasonable scope, it is qualified that adapter air-tightness moulded by tested steel. after having detected, air feed pump is separated with air supply pipe (being generally cylinder special plastic flexible pipe, it is also possible to metal bellows etc.), after the gases at high pressure release that steel is moulded in adapter, in central siphon, can again pull out central siphon. supporting guide is arranged on mainframe, and band moving frame is supported by supporting guide by support bar, it is to avoid end socket piston rod and in band moving frame stress excessive, it is possible to effectively protection end socket piston rod and band moving frame, reinforced structure stability. during work, can slide in support bar lower end on supporting guide, and support bar then supports band moving frame all the time, can effectively protect end socket piston rod.
Described connection supports frame includes 41, two supporting vertical plate vertical and parallel to each other 42 of support baseboard of level, supporting vertical plate is provided with the V-arrangement support slot 43 moulding adapter for holding steel, V-arrangement support slot opening up, supporting vertical plate lower end and support baseboard end face are fixed, in a supporting vertical plate: V-arrangement support slot runs through two plate faces of supporting vertical plate. Utilize the V-arrangement support slot of two supporting vertical plate upper ends as supporting construction, tested steel is moulded adapter and is supported with spacing.
What described central siphon was provided with ring-type moulds pipe the inner shrouding 23, steel pipe the inner shrouding 24 of ring-type, mould pipe the inner shrouding outer peripheral face to be provided with and mould pipe inner panel annular groove, steel pipe the inner shrouding outer peripheral face is provided with steel pipe inner panel annular groove, mould pipe inner panel annular groove to be provided with and mould pipe inner seal ring 231 for what contact that steel moulds adapter inwall, steel pipe inner panel annular groove is provided with the steel pipe inner seal ring 241 moulding adapter inwall for contacting steel, mould pipe the inner shrouding, steel pipe the inner shrouding, mould pipe inner panel annular groove, steel pipe inner panel annular groove is all coaxial with central siphon, mould pipe the inner shrouding be in steel pipe the inner shrouding and mould between the outer end-plate of pipe, steel pipe the inner shrouding is in be moulded between pipe the inner shrouding and the outer end-plate of steel pipe, central siphon is provided with the second air inlet 2b that connect internal with central siphon, the threeth air inlet 2c that connect internal with central siphon, central siphon outer wall is provided with the second baroceptor, 3rd baroceptor, it is outer between end-plate and steel pipe the inner shrouding that first air inlet and the first baroceptor are all in steel pipe, second air inlet and the second baroceptor are all in steel pipe the inner shrouding and mould between the shrouding of pipe the inner, 3rd air inlet and the 3rd baroceptor are all in be moulded pipe the inner shrouding and moulds between the outer end-plate of pipe, second air inlet is provided with the second breather check valve, 3rd air inlet is provided with the 3rd breather check valve, the direction passed through of the second breather check valve, Tong Guo the direction of the 3rd breather check valve all for by central siphon to outside central siphon. the reading display end of the second baroceptor, the 3rd baroceptor reading display end be all in tested steel and mould adapter outer (it is outer between end-plate and steel pipe the inner shrouding that the induction end of the first baroceptor is in steel pipe, the induction end of the second baroceptor is in steel pipe the inner shrouding and moulds between the shrouding of pipe the inner, and the induction end of the 3rd baroceptor is in moulds pipe the inner shrouding and moulds between the outer end-plate of pipe). add mould pipe the inner shrouding and steel pipe the inner shrouding (with mould the outer end-plate of pipe, the outer end-plate of steel pipe is the same, stretch into steel together to mould in adapter along with central siphon), " three sections of detections " is carried out such that it is able to disposable, respectively lengths of steel pipes, mould pipeline section and linkage section (lengths of steel pipes and the Butt Section moulding pipeline section), the outer air-tight cavity forming detection lengths of steel pipes between end-plate and steel pipe the inner shrouding of steel pipe, steel pipe the inner shrouding and mould between the shrouding of pipe the inner formed detection linkage section air-tight cavity, mould pipe the inner shrouding and mould to manage to be formed between outer end-plate and detect the air-tight cavity moulding pipeline section, air feed pump passes through the first air inlet, second air inlet, each section of air-tight cavity is inflated by the 3rd air inlet simultaneously, first baroceptor, second baroceptor, 3rd baroceptor then can carry out air pressure detection to each section simultaneously, thus quickly can effectively draw whether there is crack and leakage, and which section is concrete leakage part be.
Described steel pipe exterior seal ring, steel pipe inner seal ring, mould pipe inner seal ring, mould pipe exterior seal ring to be inside there is the gas-flow closure circle of inflatable chamber, the outer end-plate of steel pipe is provided with internal to steel pipe exterior seal ring inner inflatable chamber and the central siphon steel pipe outer ring gas tube 222 connected, steel pipe the inner shrouding is provided with internal to steel pipe inner seal ring inner inflatable chamber and the central siphon steel pipe inner ring gas tube 242 connected, mould pipe the inner shrouding be provided with by mould pipe inner seal ring inner inflatable chamber and central siphon internal connect mould pipe inner ring gas tube 232, mould manage outer end-plate be provided with by mould connect inside pipe exterior seal ring inner inflatable chamber and central siphon mould pipe outer ring gas tube 212. further, steel pipe exterior seal ring, steel pipe inner seal ring in this programme, mould pipe inner seal ring, mould pipe exterior seal ring and be gas-flow closure circle, thus its sealing can regulate. when above-mentioned each sealing ring is conventional seals circle (sealing ring as solid in rubber), in order to ensure airtight effect when detecting, sealing ring needs and steel is moulded and tightly overlayed between adapter inwall, this results in the friction when adapter moulded by entrance steel of each sealing ring and greatly, is easily caused entrance difficulty and easy Fast Wearing. and in this programme, before detection, above-mentioned each sealing ring is not inflated, thus central siphon and each shrouding, each sealing ring can stretch into steel smoothly and mould in adapter, stretch into after putting in place, central siphon inside is supplied by air feed pump, gas is except entering each section of annular seal space, also can enter into steel pipe exterior seal ring through steel pipe outer ring gas tube, enter into steel pipe inner seal ring through steel pipe inner ring gas tube, enter into and mould pipe inner seal ring, enter into and mould pipe exterior seal ring through moulding pipe outer ring gas tube, to form each section of sealing through moulding pipe inner ring gas tube. further, each section of airtight cavity pressure is more big, and in each sealing ring, pressure is also more big, so what possess detected air pressure and sealability independently adapts to regulating power, can effectively prevent from sealing not enough or excessive seal. and detected, discharged steel and mould in adapter and during axle overpressure, each sealing ring inner high voltage gas can be released, after pressure release, each sealing ring and steel are moulded and are absent from friction between adapter or rub minimum, thus directly allowing each shrouding on central siphon and central siphon depart from steel mould adapter. after have employed the form of gas-flow closure circle, when " three sections of detections " (lengths of steel pipes, mould pipeline section, linkage section) observes baroceptor reading, first there is obvious pressure drop (beyond zone of reasonableness) in baroceptor in which section, just illustrates which section leaks gas, there is crack or seal defect.
Described central siphon is provided with the pressure release steam vent 2d that connect internal with central siphon, band moving frame is connected by the driving structure that rubs with central siphon, friction driving structure includes advancing limit body 541, retract limit body 542, friction belt rotating ring 543, some push-pull bars 544, push-pull bar level and push-pull bar one end connect band moving frame, the push-pull bar other end connects friction belt rotating ring, friction belt moving ring sleeve is located on central siphon and coaxial with central siphon, friction belt rotating ring can move horizontally on central siphon, friction belt rotating ring inner ring surface is provided with friction sealed groove, friction sealed groove is provided with drag seal 5431, drag seal is coaxial with central siphon, extrude mutually between drag seal and central siphon lateral wall, advance limit body, retract limit body be all in outside central siphon and all fix with central siphon, limit base has the shrouding confined planes for the outer end-plate of spacing steel pipe, the outer end-plate of steel pipe and the level interval of the limit base level interval less than or equal to the outer end-plate of steel pipe with central siphon, pressure release steam vent is in propelling limit body and retracts between limit body, friction belt rotating ring is in propelling limit body and retracts between limit body, when the contact of friction belt rotating ring advances limit body, drag seal seals pressure release steam vent, when the contact of friction belt rotating ring retracts limit body, drag seal separates with pressure release steam vent. described propelling limit body in the form of a ring, described in retract limit body in the form of a ring, advance limit body coaxial with central siphon, retract limit body coaxial with central siphon. advance limit body to be in mould between the outer end-plate of pipe and friction belt rotating ring, retract limit body and be between friction belt rotating ring and band moving frame.
This programme can realize pressurization protection and releasing pressure automatically. when needs detect, end socket piston rod stretches out, by band moving frame, push-pull bar drives friction belt moving ring sleeve to move, owing to there is drag seal between friction belt moving ring sleeve and central siphon, and mutual extrusion friction between drag seal and central siphon lateral wall, so now friction belt moving ring sleeve can directly drive central siphon to move by drag seal, make central siphon can enter steel together with each shrouding and mould adapter, after the outer end-plate of steel pipe touches the shrouding confined planes on limit base, central siphon positions, can not move on, and friction belt rotating ring can continue promotion and be advanced until and touch propelling limit body, end socket cylinder body quits work (now pressure release steam vent is sealed by drag seal). in this programme, the entirety only completing central siphon and each shrouding stretches into, positions, and pressure release steam vent just can be sealed by drag seal, just can allow in central siphon smoothly, realize inflation, pressurize in each sealing ring, thus just can detect. and after having detected, end socket piston rod is directly regained, owing to now each sealing ring is in swelling state, and steel is moulded and is tightly affixed between adapter, so central siphon all cannot move together with each shrouding, end socket piston rod is only by band moving frame, friction belt rotating ring is retracted by push-pull bar, until the contact of friction belt rotating ring retracts limit body, and in the process, drag seal can leave pressure release steam vent, in central siphon, in each sealing ring, gas can be discharged, after in each sealing ring, gas is discharged, sealing effectiveness disappears, the gas of (namely three seal sections are interior) in adapter moulded by steel also can discharge (now each sealing ring and steel are moulded and be no longer tightly affixed between adapter), thus along with the continuation of end socket piston rod is regained, central siphon also can be drawn out together with each shrouding, depart from steel and mould adapter. said process eliminates all of unnecessary pressure release action (such as the separating of air supply pipe and air feed pump, docking operation), disposable achieves the action first discharging pressure, rear time delay pull-out central siphon, whole process rationally, coherent, efficiently.
Described central siphon lateral wall is provided with external screw thread, steel pipe the inner shrouding inner ring surface, mould pipe the inner shrouding inner ring surface and be connected each through the external screw thread on female thread and central siphon lateral wall, central siphon is provided with in first inflation inlet 2e, inflation inlet 2f in second, and inflation inlet in first, inflation inlet is all internal with central siphon in second connects, the first air flue 24a it is provided with in the shrouding of steel pipe the inner, first air flue outer end opening is in steel pipe the inner shrouding outer ring surface, first air flue the inner is opened on steel pipe the inner shrouding inner ring surface, steel pipe inner ring gas tube one end connects with steel pipe inner seal ring inner inflatable chamber, the steel pipe inner ring gas tube other end stretches in the first air flue from the first air flue outer end, seal between steel pipe inner ring gas tube outer tube wall and the air flue inwall of the first air flue, rectify in the first air flue inflation inlet in first and connect with inflation inlet in first, mould and in the shrouding of pipe the inner, be provided with the second air flue 23a, second air flue outer end opening is in moulding pipe the inner shrouding outer ring surface, second air flue the inner is opened on moulds pipe the inner shrouding inner ring surface, mould pipe inner ring gas tube one end and mould pipe inner seal ring inner inflatable chamber and connect, mould the pipe inner ring gas tube other end and stretch in the first air flue from the second air flue outer end, mould and seal between pipe inner ring gas tube outer tube wall and the air flue inwall of the second air flue, rectify in the second air flue inflation inlet in second and connect with inflation inlet in second. steel pipe inner seal ring is fixed on steel pipe inner panel annular groove, moulds pipe inner seal ring and is fixed on and moulds on pipe inner panel annular groove. after having had segmentation detection function, still can carry out steel and mould the whole detection within adapter, when needs carry out before steel moulds the internal overall tightness detection of adapter, only need turn steel pipe the inner shrouding, mould pipe the inner shrouding, make the first air flue inner and in first, inflation inlet does not line up, do not connect, make the second air flue inner and in second, inflation inlet does not line up, do not connect, thus, it is inflated again, pressurize, during detection, only steel pipe exterior seal ring and mould pipe exterior seal ring and play sealing function, such that it is able to realize steel to mould overall tightness detection (all the other steps are identical with segmentation detection) within adapter. after whole detection completes, if desired carry out segmentation detection again, then first turn steel pipe the inner shrouding, mould pipe the inner shrouding, make steel pipe the inner shrouding, mould pipe inner end seals sheet reset and can re-start segmentation detection.
In addition, there is minimum probability, there will be situations below: the leakage position on adapter moulded by steel, just by connection supports frame, the detection and location structures such as location-plate are blocked, thus these leakage positions are not detected among out gas leakage when causing detecting, for this, testing result accuracy is improved further if wanting to improve, can after one-time detection completes, steel is moulded adapter on connection supports frame, moulds adapter axis one angle of rotation along steel, such as 20 degree, thus, connection supports frame, on location-plate or location-plate for contact steel mould the structure etc. of adapter again touch steel mould the position of adapter can be different from previous contact position, in conjunction with the testing result of twice, just can tap and mould the conclusion whether adapter sealing is qualified.
Claims (8)
1. an envelope pressure test machine, including main engine bed, air feed pump, it is characterized in that, also include closure cylinder, compression cylinder, the central siphon of a piece closed at both ends and level, the limit base of adapter one end is moulded for contacting steel, mould adapter for supporting steel and make steel mould adapter axis to be in the connection supports frame of level, closure cylinder, compression cylinder, connection supports frame is arranged on main engine bed, described closure cylinder includes end socket cylinder body, end socket cylinder piston, end socket piston rod, the scalable direction level of end socket piston rod, compression cylinder includes compressing cylinder body, hold-down cylinder piston, clamping piston bar, the scalable direction of clamping piston bar is vertical, clamping piston bar is provided with the location-plate moulding adapter for compressing steel, location-plate is in above connection supports frame, end socket piston rod is provided with the band moving frame for driving central siphon axially to move horizontally along central siphon, central siphon is provided with moulding of ring-type and manages outer end-plate, the outer end-plate of the steel pipe of ring-type, mould the outer end-plate outer peripheral face of pipe to be provided with and mould pipe outside plate annular groove, the outer end-plate outer peripheral face of steel pipe is provided with steel pipe outside plate annular groove, mould the outer end-plate of pipe, the outer end-plate of steel pipe, mould pipe outside plate annular groove, steel pipe outside plate annular groove is all coaxial with central siphon, mould pipe outside plate annular groove to be provided with and mould pipe exterior seal ring for what contact that steel moulds adapter inwall, steel pipe outside plate annular groove is provided with the steel pipe exterior seal ring moulding adapter inwall for contacting steel, central siphon is provided with first air inlet that connect internal with central siphon, first air inlet is provided with the first breather check valve, Tong Guo the direction of the first breather check valve be by central siphon to outside central siphon, central siphon outer wall is provided with the first baroceptor, the steel that connection supports frame supports is moulded adapter and is between limit base and closure cylinder, the supply end of air feed pump connects by air supply pipe and central siphon are internal, described mainframe is provided with supporting guide, supporting guide is provided with support bar, support bar lower end and supporting guide are slidably connected, the slidably direction of support bar is parallel with the movable direction of central siphon, post upper connects band moving frame, described location-plate lower surface is provided with the rubber clamping pad moulding adapter for contacting steel.
2. a kind of envelope pressure test machine according to claim 1, it is characterized in that, described connection supports frame includes the support baseboard of level, two supporting vertical plate vertical and parallel to each other, supporting vertical plate is provided with the V-arrangement support slot moulding adapter for holding steel, V-arrangement support slot opening up, supporting vertical plate lower end and support baseboard end face are fixed.
3. a kind of envelope pressure test machine according to claim 1, it is characterized in that, what described central siphon was provided with ring-type moulds pipe the inner shrouding, steel pipe the inner shrouding of ring-type, mould pipe the inner shrouding outer peripheral face to be provided with and mould pipe inner panel annular groove, steel pipe the inner shrouding outer peripheral face is provided with steel pipe inner panel annular groove, mould pipe inner panel annular groove to be provided with and mould pipe inner seal ring for what contact that steel moulds adapter inwall, steel pipe inner panel annular groove is provided with the steel pipe inner seal ring moulding adapter inwall for contacting steel, mould pipe the inner shrouding, steel pipe the inner shrouding, mould pipe inner panel annular groove, steel pipe inner panel annular groove is all coaxial with central siphon, mould pipe the inner shrouding be in steel pipe the inner shrouding and mould between the outer end-plate of pipe, steel pipe the inner shrouding is in be moulded between pipe the inner shrouding and the outer end-plate of steel pipe, central siphon is provided with second air inlet that connect internal with central siphon, threeth air inlet that connect internal with central siphon, central siphon outer wall is provided with the second baroceptor, 3rd baroceptor, it is outer between end-plate and steel pipe the inner shrouding that first air inlet and the first baroceptor are all in steel pipe, second air inlet and the second baroceptor are all in steel pipe the inner shrouding and mould between the shrouding of pipe the inner, 3rd air inlet and the 3rd baroceptor are all in be moulded pipe the inner shrouding and moulds between the outer end-plate of pipe, second air inlet is provided with the second breather check valve, 3rd air inlet is provided with the 3rd breather check valve, the direction passed through of the second breather check valve, Tong Guo the direction of the 3rd breather check valve all for by central siphon to outside central siphon.
4. a kind of envelope pressure test machine according to claim 3, it is characterized in that, described steel pipe exterior seal ring, steel pipe inner seal ring, mould pipe inner seal ring, mould pipe exterior seal ring to be inside there is the gas-flow closure circle of inflatable chamber, the outer end-plate of steel pipe is provided with internal to steel pipe exterior seal ring inner inflatable chamber and the central siphon steel pipe outer ring gas tube connected, steel pipe the inner shrouding is provided with internal to steel pipe inner seal ring inner inflatable chamber and the central siphon steel pipe inner ring gas tube connected, mould pipe the inner shrouding be provided with by mould pipe inner seal ring inner inflatable chamber and central siphon internal connect mould pipe inner ring gas tube, mould manage outer end-plate be provided with by mould connect inside pipe exterior seal ring inner inflatable chamber and central siphon mould pipe outer ring gas tube.
5. a kind of envelope pressure test machine according to claim 4, it is characterized in that, described central siphon is provided with the pressure release steam vent that connect internal with central siphon, band moving frame is connected by the driving structure that rubs with central siphon, friction driving structure includes advancing limit body, retract limit body, friction belt rotating ring, some push-pull bars, push-pull bar level and push-pull bar one end connect band moving frame, the push-pull bar other end connects friction belt rotating ring, friction belt moving ring sleeve is located on central siphon and coaxial with central siphon, friction belt rotating ring can move horizontally on central siphon, friction belt rotating ring inner ring surface is provided with friction sealed groove, friction sealed groove is provided with drag seal, drag seal is coaxial with central siphon, extrude mutually between drag seal and central siphon lateral wall, advance limit body, retract limit body be all in outside central siphon and all fix with central siphon, limit base has the shrouding confined planes for the outer end-plate of spacing steel pipe, pressure release steam vent is in propelling limit body and retracts between limit body, friction belt rotating ring is in propelling limit body and retracts between limit body, when the contact of friction belt rotating ring advances limit body, drag seal seals pressure release steam vent, when the contact of friction belt rotating ring retracts limit body, drag seal separates with pressure release steam vent.
6. a kind of envelope pressure test machine according to claim 5, is characterized in that, described propelling limit body in the form of a ring, described in retract limit body in the form of a ring, advance limit body coaxial with central siphon, retract limit body coaxial with central siphon.
7. a kind of envelope pressure test machine according to claim 4, it is characterized in that, described central siphon lateral wall is provided with external screw thread, steel pipe the inner shrouding inner ring surface, mould pipe the inner shrouding inner ring surface and be connected each through the external screw thread on female thread and central siphon lateral wall, central siphon is provided with in first inflation inlet, inflation inlet in second, and inflation inlet in first, inflation inlet is all internal with central siphon in second connects; It is provided with the first air flue in the shrouding of steel pipe the inner, first air flue outer end opening is in steel pipe the inner shrouding outer ring surface, first air flue the inner is opened on steel pipe the inner shrouding inner ring surface, steel pipe inner ring gas tube one end connects with steel pipe inner seal ring inner inflatable chamber, the steel pipe inner ring gas tube other end stretches in the first air flue from the first air flue outer end, seal between steel pipe inner ring gas tube outer tube wall and the air flue inwall of the first air flue, rectify in the first air flue inflation inlet in first and connect with inflation inlet in first; Mould in the shrouding of pipe the inner and be provided with the second air flue, second air flue outer end opening is in moulding pipe the inner shrouding outer ring surface, second air flue the inner is opened on moulds pipe the inner shrouding inner ring surface, mould pipe inner ring gas tube one end and mould pipe inner seal ring inner inflatable chamber and connect, mould the pipe inner ring gas tube other end and stretch in the first air flue from the second air flue outer end, mould and seal between pipe inner ring gas tube outer tube wall and the air flue inwall of the second air flue, rectify in the second air flue inflation inlet in second and connect with inflation inlet in second.
8. a kind of envelope pressure test machine according to claim 5 or 6, it is characterized in that, the steel that described connection supports frame supports moulds the steel pipe end of adapter towards limit base, advance limit body to be in mould between the outer end-plate of pipe and friction belt rotating ring, retract limit body and be between friction belt rotating ring and band moving frame.
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| CN105666100B (en) | 2018-05-04 |
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Effective date of registration: 20230925 Address after: Room 407-10, floor 4, building 2, Haichuang science and technology center, Cangqian street, Yuhang District, Hangzhou City, Zhejiang Province, 311100 Patentee after: Zhejiang Zhiduo Network Technology Co.,Ltd. Address before: 313300 comprehensive building of Anji County Science and technology entrepreneurship Park, Sunshine Industrial Park, Dipu Town, Anji County, Huzhou City, Zhejiang Province Patentee before: China Jiliang University |