CN207351623U - Auxiliary seal cushion rubber air tight test frock in a kind of aviation graphite grazing - Google Patents
Auxiliary seal cushion rubber air tight test frock in a kind of aviation graphite grazing Download PDFInfo
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- CN207351623U CN207351623U CN201720753555.2U CN201720753555U CN207351623U CN 207351623 U CN207351623 U CN 207351623U CN 201720753555 U CN201720753555 U CN 201720753555U CN 207351623 U CN207351623 U CN 207351623U
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Abstract
It the utility model is related to auxiliary seal cushion rubber air tight test frock in a kind of aviation graphite grazing, auxiliary seal cushion rubber air tight test frock includes simulation stationary ring, analog inner loop, simulation outer shroud, inner ring fixture and outer shroud fixture in the aviation graphite grazing, simulation stationary ring includes inner ring sleeve and outer shroud boss coaxial and be wholely set, and outer shroud boss is fixed at the front end of inner ring sleeve；Outside diameter, the internal diameter of analog inner loop are identical with outside diameter, the internal diameter of inner ring sleeve, the outside diameter for simulating outer shroud is identical with the outside diameter of outer shroud boss, the annular outer wall of analog inner loop and the endless inner wall clearance fit of simulation outer shroud, simulation outer shroud form the assembly identical with simulation stationary ring shape after being socketed with analog inner loop；The setting of stationary ring is simulated, can be tested to the air-tightness of frock in itself；Analog inner loop, the setting for simulating outer shroud, the auxiliary seal cushion rubber that can be opposite between the two carry out air-leakage test.
Description
Technical field
Engine mechanical seal is the utility model is related to examine in equipment technical field, particularly a kind of aviation graphite grazing
Auxiliary seal cushion rubber air tight test frock.
Background technology
Aviation industry develops rapidly in recent years, and mobility, reliability requirement to aircraft increasingly improve, therefore there is an urgent need to
The quality of each part of aero-engine is improved, to ensure its high performance requirement.
Graphite seal device is also known as end face seal, belongs to mechanical seal, is that one kind relies on flexible member to quiet, rotating ring end
The pretension and pressure medium of face sealing pair and the compression of flexible member pressure and reach the axial end face sealing device of sealing.In quilt
On the premise of fluid and the external world are sealed there are pressure differential, by maintaining certain end contact pressure, to reduce sealing as far as possible
Axial gap between friction pair end face is to reduce by the leakage of sealing fluid.
Sealing friction pair end face is major seal faces, is the key for determining mechanical seal friction, abrasion and sealing performance, together
When also determine the working life of mechanical seal；As long as the surface roughness and glacing flatness of primary sealing area, which can guarantee that, reaches requirement, only
Want material wear ability good, mechanical seal can reach seldom amount of leakage.
As shown in Figure 1, graphite seal device has graphite stationary ring component and rotating ring 64（Drag ring）Composition, wherein static components
Including：Outer shroud 61, inner ring 62 and graphite annulus 63, auxiliary seal cushion rubber 6, auxiliary are set between 62 outer wall of 61 inner wall of outer shroud and inner ring
Sealant rubber ring 6 provides the elastic force of a part, realizes the follow-up motion of sealing compensation, while also set up between outer shroud 61 and inner ring 62
The wavy spring 65 acted on vertically, for being compensated automatically, prevents liquid or gas from relatively moving part from seal assembly
Leakage.
Typical auxiliary packing material has synthetic rubber, and O-shaped rubber ring is the most common auxiliary sealing member of end face seal.Rubber
Glue sizing material, selects according to operating temperature and media compatibility, mainly there is nitrile rubber, fluorubber etc..
Research shows：The size selection of auxiliary seal cushion rubber, decrement control influence the elasticity and leakproofness of its component.It is auxiliary
Sealant rubber ring is helped there are three kinds：1. internal expanding External Pressure Type d1<D1, d2> D2；2. External Pressure Type d1>D1, d2>D2；3. internal expanding type d1<D1,
d2<D2（Wherein D1 is outside diameter of inner ring, and D2 is bore diameter of outer ring, and d1 is cushion rubber internal diameter, and d2 is cushion rubber outside diameter）.Three kinds of cushion rubbers elasticity and
Sealing performance has difference, so when selecting different cushion rubbers, its sealing performance must be qualified.Enter stone in auxiliary seal cushion rubber
Before black densification device how it is simple and quick its air-tightness is detected, be those skilled in the art be badly in need of solve technology
Problem.
Utility model content
The technical problem to be solved by the present invention is to provide a kind of simple in structure, easily operated to be used for aviation graphite
Auxiliary seal cushion rubber in sealing carries out the frock of air tight test.
In order to solve the above technical problems, auxiliary seal cushion rubber air tight test frock provided by the utility model, including：Mould
Intend stationary ring, analog inner loop, simulation outer shroud, inner ring fixture and outer shroud fixture, what the simulation stationary ring included coaxially and was wholely set
Inner ring sleeve and outer shroud boss, the outer shroud boss are fixed at the front end of the inner ring sleeve；Outside the analog inner loop
Footpath, internal diameter are identical with outside diameter, the internal diameter of the inner ring sleeve, the outside diameter phase of the outside diameter and the outer shroud boss of the simulation outer shroud
Together, the annular outer wall of the analog inner loop and the endless inner wall clearance fit of the simulation outer shroud, the simulation outer shroud and simulation
The assembly identical with the simulation stationary ring shape is formed after inner ring socket；The outer shroud fixture includes the ring-type cylinder being wholely set
Body and cylinder bottom, circumferentially arranged circular step in the stack shell, the endless inner wall of the circular step and the simulation outer shroud, outer shroud
The outer wall clearance fit of boss, the cylinder bottom set outer shroud fixture tracheae；The inner ring fixture is disc-shaped, including arranged on its end face
Cylindrical boss at axle center and the annulus at its end face edge so that the cylindrical boss and the annulus it
Between form cavity, the inner ring fixture sets the inner ring fixture tracheae communicated with the cavity；The annular outer wall of the cylindrical boss with
In the stack shell of the inner wall clearance fit of the analog inner loop, inner ring sleeve, the outer wall of the annulus and the outer shroud fixture
Wall clearance fit；In use, testing first to the air-tightness of frock, including the outer shroud boss for simulating stationary ring is socketed in institute
In the circular step for stating outer shroud fixture, the inner wall of the circular step sets the 3rd sealing ring for sealing；The inner ring fixture
Cylindrical boss be socketed in the tail end of the inner ring sleeve, the outer wall of the cylindrical boss sets the 4th sealing for sealing
Circle；The annulus of the inner ring fixture is socketed in the stack shell of the outer shroud fixture, between the annulus and the stack shell
The second sealing ring for sealing is set, so as to the cylinder bottom of outer shroud fixture, simulate in the inner ring sleeve of stationary ring and inner ring fixture
Form tubular cavity between cylindrical boss, the ring-type stack shell of outer shroud fixture, simulate stationary ring the outer and inner ring fixture of inner ring sleeve it
Between form toroidal cavity；After frock air tight test qualification, auxiliary seal cushion rubber to be detected is placed in the outer of the analog inner loop
Between the inner wall of wall and the simulation outer shroud, and will simulate the assembly that is formed after the socket of outer shroud and analog inner loop replace simulate it is quiet
Ring, the auxiliary seal cushion rubber for being opposite to analog inner loop and simulating between outer shroud carry out airtight inspection.
Further, the circumferentially arranged annular groove of endless inner wall of the simulation outer shroud, for placing auxiliary to be tested
Sealant rubber ring.
Further, circumferentially arranged first annular groove of the annular outer wall of the cylindrical boss, the 4th sealing ring is placed in during assembling
In first annular groove, to strengthen the sealing effect between cylindrical boss and analog inner loop.
Further, the outer wall of the annulus sets the second annular groove, and the second sealing ring is placed in second ring during assembling
In groove, to strengthen the sealing effect between inner ring fixture and outer shroud fixture.
Further, circumferentially arranged 3rd annular groove in the circular step, the 3rd sealing ring is placed in the described 3rd during assembling
In annular groove, to strengthen circular step and simulate the sealing effect between outer shroud.
Further, the edge of the inner ring fixture is additionally provided with stage portion, so that the stack shell of the outer shroud fixture and the ring
When the socket of shape sleeve coordinates, carried out by the stage portion spacing.
Further, perforative first through hole is set on the inner ring fixture, and the inner ring fixture tracheae passes through described first
Through hole is set, and is placed in so that inner ring presss from both sides tracheate front end in ring cavity, tail end is placed in outside inner ring fixture, the inner ring fixture gas
The first sealing ring is set to be sealed between pipe and the inner ring fixture；Centrally disposed perforative second through hole at the cylinder bottom,
The outer shroud fixture tracheae is set through second through hole, so that outer shroud presss from both sides tracheate tail end and is placed in tubular cavity, it is preceding
End is placed in outside outer shroud fixture, sets the 5th sealing ring to be sealed between the outer shroud fixture tracheae and the cylinder bottom.
Further, the outer wall of the annulus sets Blind locating holes, and the ring-type stack shell radially sets perforative
Positioning jack, during so that the annulus is socketed in the ring-type stack shell, can be used positioning pin insertion positioning jack and fixed
In the blind hole of position, inner ring fixture and outer shroud fixture are positioned.
Further, multiple mutually disjunct boss are set along the inner side of the annular boss on the cylinder bottom, so that simulation
When inner ring, simulation outer shroud are socketed in outer shroud fixture, analog inner loop, the end of simulation outer shroud are supported by boss, avoid mould
Plan inner ring, the end of simulation outer shroud are directly in contact with cylinder bottom, the gap between increase analog inner loop, simulation outer shroud and cylinder bottom,
During so that auxiliary seal cushion rubber leaking air, the air of leakage can circulate rapidly between toroidal cavity and tubular cavity, with to
Up to corresponding tracheae.
The method of work of above-mentioned auxiliary seal cushion rubber air tight test frock, includes the following steps：
A, the air-tightness of inner ring fixture and outer shroud fixture is examined first by simulation stationary ring, the outer shroud boss of stationary ring will be simulated
It is socketed in the circular step of the outer shroud fixture, and sealed through the 3rd sealing ring；The cylindrical boss of the inner ring fixture
It is socketed in the tail end of the inner ring sleeve, and sealed through the 4th sealing ring；The annulus socket of the inner ring fixture
Sealed in the stack shell of the outer shroud fixture, and through the second sealing ring；Positioning pin is inserted into positioning jack and Blind locating holes
It is interior, inner ring fixture and outer shroud fixture are fixed；The cylinder bottom of outer shroud fixture, simulate in the inner ring sleeve of stationary ring and inner ring
Tubular cavity, the ring-type stack shell of outer shroud fixture, the outer and inner ring of inner ring sleeve for simulating stationary ring are formed between the cylindrical boss of fixture
Toroidal cavity is formed between fixture.
B, the gas of certain pressure is passed through into toroidal cavity through inner ring fixture tracheae, and outer shroud fixture tracheae is placed in water
Below face, see whether that bubble is emerged, bubble-free is emerged, and proves that the gas in ring cavity cannot be introduced into tubular cavity；Again
The gas pressure that inner ring fixture tracheal strips are passed through is removed so that the pressure outside air pressure and the water surface in ring cavity maintains an equal level, will
Inner ring fixture tracheae is placed in below the water surface, and the gas of certain pressure is passed through after outer shroud fixture tracheae is taken out out of the water surface, observation
Whether the inner ring fixture tracheae being placed in below the water surface has bubble to emerge, and bubble-free, which is emerged, then proves that the gas in tubular cavity can not
Into in ring cavity, equal bubble-free, which is emerged, twice illustrates that the 3rd sealing ring, the air-tightness of the 4th sealing ring are good.
C, simulation stationary ring is taken out, will after auxiliary seal cushion rubber to be tested is placed in the annular groove of simulation outer shroud
Simulation outer shroud is replaced with the assembly formed after analog inner loop socket and simulates stationary ring, repeat step B, and equal bubble-free is emerged twice
Illustrate that the air-tightness of auxiliary seal cushion rubber to be tested is good.
Further, in the step B, when gas is passed through into toroidal cavity through inner ring fixture tracheae, by frock after fixation
It is placed in below the water surface, whether the surface for observing frock has bubble；When being passed through gas into tubular cavity through outer shroud fixture tracheae, see
Whether the surface for examining frock has bubble, to examine the air-tightness of the first sealing ring, the second sealing ring, the 5th sealing ring；It is equal twice
Bubble-free, which is emerged, illustrates that the first sealing ring, the second sealing ring, the air-tightness of the 5th sealing ring are good.
The technique effect of utility model：（1）The auxiliary seal cushion rubber air tight test frock of the utility model, relative to existing
There is technology, by simulating the setting of stationary ring, can test to the air-tightness of frock in itself；（2）Analog inner loop, simulation outer shroud
Setting, the knot that auxiliary seal cushion rubber between the two carries out air-leakage test, analog inner loop and simulation outer shroud can be opposite to
Structure is simple, is easily assembled and operates；（3）The structure of frock is simple, of low cost, and assembling is rapid, be applicable to internal expanding External Pressure Type,
Internal expanding type, External Pressure Type sealant rubber ring air-leakage test, it is applied widely.
Brief description of the drawings
The utility model is described in further detail with reference to Figure of description：
Fig. 1 is the cross-sectional view of the graphite seal device of the prior art；
Fig. 2 is the cross-section structure after the analog inner loop of the utility model, simulation outer shroud, inner ring fixture and the assembling of outer shroud fixture
Schematic diagram；
Fig. 3 is the cross-sectional view of the inner ring fixture of the utility model；
Fig. 4 is the cross-sectional view of the outer shroud fixture of the utility model；
Fig. 5 is the cross-sectional view of the simulation stationary ring of the utility model.
In figure：Inner ring fixture 1, cylindrical boss 11, annulus 12, cavity 13, the first annular groove 14, the second annular groove 15 are fixed
Position blind hole 16, stage portion 17, toroidal cavity 18, tubular cavity 19, inner ring fixture tracheae 2, outer shroud fixture tracheae 3, the first sealing
Circle 31, the second sealing ring 32, the 3rd sealing ring 33, the 4th sealing ring 34, the 5th sealing ring 35, positioning pin 4, analog inner loop 5 are auxiliary
Help sealant rubber ring 6, outer shroud 61, inner ring 62, graphite annulus 63, rotating ring 64, wavy spring 65 simulates stationary ring 7, and outer shroud boss 71 is interior
Ring sleeve 72, outer shroud fixture 8, annular boss 81, the 3rd annular groove 82, positioning jack 83, stack shell 84, cylinder bottom 85, boss 86, simulation
Outer shroud 9.
Embodiment
Embodiment 1 as shown in Fig. 2, the auxiliary seal cushion rubber air tight test frock of the present embodiment, including simulation stationary ring 7,
Analog inner loop 5, simulation outer shroud 9, inner ring fixture 1 and outer shroud fixture 8, inner ring fixture 1, outer shroud fixture 8 coordinate with simulation stationary ring 7 and make
Used time, tests the air-tightness of frock itself, and inner ring fixture 1, outer shroud fixture 8 and analog inner loop 5, simulation outer shroud 9 coordinate
In use, the auxiliary seal cushion rubber 6 for being opposite to analog inner loop 5 and simulating between outer shroud 9 carries out air tight test.
As shown in figure 5, simulation stationary ring 7 includes inner ring sleeve 72 and outer shroud boss 71 coaxial and be wholely set, outer ring convex
Platform 71 is fixed at the front end of inner ring sleeve 72；As shown in Fig. 2, the outside diameter of analog inner loop 5, internal diameter and inner ring sleeve 72 it is outer
Footpath, internal diameter are identical, and the outside diameter of simulation outer shroud 9 is identical with the outside diameter of outer shroud boss 71, and the annular outer wall of analog inner loop 5 and simulation are outer
The endless inner wall clearance fit of ring 9, simulates the circumferentially arranged annular groove of endless inner wall of outer shroud 9, auxiliary seal to be tested
Cushion rubber 6 is placed in annular groove.Simulate and the combination identical with simulation 7 shape of stationary ring is formed after outer shroud 9 is socketed with analog inner loop 5
Body.
As shown in figure 4, outer shroud fixture 8 includes ring-type stack shell 84 and the cylinder bottom 85 being wholely set, circumferentially setting in stack shell 84
Circular step 81 is put, endless inner wall and simulation outer shroud 9, the outer wall clearance fit of outer shroud boss 71, the ring-type of the circular step 81
Circumferentially arranged 3rd annular groove 82 in step 81,82 interior the 3rd sealing ring 33 set for sealing of the 3rd annular groove.On cylinder bottom 85
2 mutual disjunct boss 86 are set along the inner side of annular boss 81, so that analog inner loop 5, simulation outer shroud 9 are socketed in outer shroud folder
When in tool 8, analog inner loop 5, the end of simulation outer shroud 9 are supported by boss 86, are avoided analog inner loop 5, are simulated the end of outer shroud 9
Portion is directly in contact with cylinder bottom 85.
As shown in figure 3, inner ring fixture 1 is disc-shaped, including cylindrical boss 11 at its end face axle center and arranged on its end
The annulus 12 of face edge, so as to cavity 13 is formed between cylindrical boss 11 and annulus 12, the cylindrical boss 11
Annular outer wall and analog inner loop 5, the inner wall clearance fit of inner ring sleeve 72, the annular outer wall of cylindrical boss 11 circumferentially arranged the
One annular groove 14,14 interior the 4th sealing ring 34 set for sealing of the first annular groove；The outer wall of annulus 12 and outer shroud fixture 8
84 inner wall clearance fit of stack shell, the outer wall of annulus 12 set the second annular groove 15, are set in the second annular groove 15 for sealing
Second sealing ring 32.
The edge of inner ring fixture 1 is additionally provided with stage portion 17, so that the stack shell 84 of outer shroud fixture 8 is matched somebody with somebody with the socket of annulus 12
During conjunction, carried out by stage portion 17 spacing；The outer wall of annulus 12 sets Blind locating holes 16, and ring-type stack shell 84 is radially set
Perforative positioning jack 83, during so that annulus 12 is socketed in ring-type stack shell 84, positioning pin 4 can be used to be inserted into positioning jack
83 and Blind locating holes 16 in, inner ring fixture 1 and outer shroud fixture 8 are fixed；Positioning pin 4 and Blind locating holes 16, positioning
0.1~0.2mm clearance fits are used between jack 83, is easily installed and dismantles.
Perforative first through hole is set on inner ring fixture 1, and inner ring fixture tracheae 2 is set through first through hole, inner ring folder
The first sealing ring 31 is set to be sealed between tool tracheae 2 and inner ring fixture 1；Centrally disposed perforative the second of cylinder bottom 85 is logical
Hole, outer shroud fixture tracheae 3 are set through the second through hole, and the 5th sealing ring 35 is set between the outer shroud fixture tracheae 3 and cylinder bottom 85
Sealed.
Inner ring fixture 1 and analog inner loop 5, analog inner loop 5 and simulation outer shroud 9, simulation outer shroud 9 and 8 radial direction of outer shroud fixture
Between use 0.05~0.1mm clearance fit；Analog inner loop 5 axially uses 0.1~0.2mm with inner ring fixture 1, outer shroud fixture 8
Clearance fit, in order to install.
When inner ring fixture 1, outer shroud fixture 8 are used cooperatively with simulation stationary ring 7, the outer shroud boss 71 of simulation stationary ring 7 is socketed in
In the circular step 81 of outer shroud fixture 8, the cylindrical boss 11 of inner ring fixture 1 is socketed in the tail end of inner ring sleeve 72, inner ring folder
The annulus 12 of tool 1 is socketed in the stack shell 84 of outer shroud fixture 8, the cylinder bottom 85 of outer shroud fixture 8, the inner ring sleeve for simulating stationary ring 7
Tubular cavity 19 is formed in cylinder 72 between the cylindrical boss 11 of inner ring fixture 1, the ring-type stack shell 84 of outer shroud fixture 8, simulation are quiet
Toroidal cavity 18 is formed between the outer and inner ring fixture 1 of inner ring sleeve 72 of ring 7；The front end of inner ring fixture tracheae 2 is placed in ring-type sky
In chamber 18, tail end is placed in outside inner ring fixture 1, and the tail end of outer shroud fixture tracheae 3 is placed in tubular cavity 19, and front end is placed in outer shroud folder
Outside tool 8.
When inner ring fixture 1, outer shroud fixture 8 are used cooperatively with analog inner loop 5, simulation outer shroud 9, simulation outer shroud 9 is socketed in outer
In the circular step 81 of ring fixture 8, the front end of analog inner loop 5 is socketed in simulation outer shroud 9, and the annular groove of simulation outer shroud 9 will
Auxiliary seal cushion rubber 6 to be detected is placed between simulation outer shroud 9 and analog inner loop 5, and the cylindrical boss 11 of inner ring fixture 1 is socketed in
In the tail end of analog inner loop 5, the annulus 12 of inner ring fixture 1 is socketed in the stack shell 84 of outer shroud fixture 8, inner ring fixture 1
Cylindrical boss 11, the inner wall of analog inner loop 5, outer shroud fixture 8 cylinder bottom 85 between form tubular cavity 19, tubular cavity 19 is same
Communicated through outer shroud fixture tracheae 3 with the outside of cylinder bottom 85；Ring is formed between 5 outer wall of analog inner loop, 84 inner wall of stack shell, inner ring fixture 1
Shape cavity 18, ring cavity 18 are equally communicated through inner ring fixture tracheae 2 with the outside of inner ring fixture 1.
Embodiment 2
Such as the method for work of the auxiliary seal cushion rubber air tight test frock of embodiment 1, include the following steps：
A, the air-tightness of inner ring fixture 1 and outer shroud fixture 8 is examined first by simulation stationary ring, the outer shroud of stationary ring 7 will be simulated
Boss 71 is socketed in the circular step 81 of outer shroud fixture, and is sealed through the 3rd sealing ring 33；The column of inner ring fixture 1 is convex
Platform 11 is socketed in the tail end of inner ring sleeve 72, and is sealed through the 4th sealing ring 34；12 sets of the annulus of inner ring fixture 1
It is connected in the stack shell 84 of outer shroud fixture 8, and is sealed through the second sealing ring 32；Positioning pin 4 is inserted into positioning jack 83 and is determined
In the blind hole 16 of position, inner ring fixture 1 and outer shroud fixture 8 are fixed；The cylinder bottom 85 of outer shroud fixture 8, simulate the interior of stationary ring 7
Tubular cavity 19, ring-type stack shell 84, the mould of outer shroud fixture 8 are formed in ring sleeve 72 between the cylindrical boss 11 of inner ring fixture 1
Intend forming toroidal cavity 18 between the outer and inner ring fixture 1 of inner ring sleeve 72 of stationary ring 7.
B, the air-flow that pressure is 0.5Mpa is passed through into toroidal cavity 18 through inner ring fixture tracheae 2, and by outer shroud fixture gas
Pipe 3 is placed in below the water surface, is observed 1 minute, has been checked whether that bubble is emerged, the gas that bubble-free is emerged then in proof ring cavity 18
Body can not enter tubular cavity 19 through the 3rd sealing ring 33, the 4th sealing ring 34；Again by the gas by being passed through in inner ring fixture tracheae 2
Stream removes so that and the pressure outside air pressure and the water surface in ring cavity 18 maintains an equal level, and inner ring fixture tracheae 2 is placed in below the water surface,
Be passed through after outer shroud fixture tracheae 3 is taken out out of the water surface pressure be 0.5MPa air-flow, observe 1 minute, check be placed in the water surface with
Under inner ring fixture tracheae 2 whether there is bubble to emerge, bubble-free, which is emerged, then proves that the gas in tubular cavity 19 can not be through the 3rd
Sealing ring 33, the 4th sealing ring 34 enter in ring cavity 18, and equal bubble-free, which is emerged, twice illustrates that the 3rd sealing ring the 33, the 4th is close
The air-tightness of seal 34 is good.
C, simulation stationary ring 7 is taken out, after auxiliary seal cushion rubber 6 to be tested is placed in the annular groove of simulation outer shroud 9,
Outer shroud 9 will be simulated and analog inner loop 5 is socketed and forms assembly replacement simulation stationary ring 7, repeat step B, equal bubble-free is emerged twice
Explanation ring cavity 18 in gas can not enter tubular through the 3rd sealing ring 33, the 4th sealing ring 34, auxiliary seal cushion rubber 6
Gas in cavity 19 and tubular cavity 19 can not enter ring through the 3rd sealing ring 33, the 4th sealing ring 34, auxiliary seal cushion rubber 6
In shape cavity 18, therefore the air-tightness of auxiliary seal cushion rubber 6 to be tested is good；If there is bubble to emerge, because in step B with to
Three sealing rings 33, the air-tightness of the 4th sealing ring 34 are examined, thus can be determined that be auxiliary seal cushion rubber 6 air-tightness
It can not meet the requirements.
In order to examine the air-tightness of the first sealing ring, the second sealing ring, the 5th sealing ring, the gas of above-mentioned sealing ring is avoided
Close property influences detection efficiency, in stepb, will be solid after inner ring fixture tracheae is passed through the air-flow of 0.5MPa into toroidal cavity
Frock after fixed is placed in below the water surface, is only retained the tracheate tail end of inner ring folder and is placed in more than the water surface, observes 1 minute, check interior
The junction of ring fixture tracheae 2 and inner ring fixture 1, the junction of outer shroud fixture tracheae 3 and outer shroud fixture 8, outer shroud fixture 8 with it is interior
Whether the junction of ring fixture 1 has bubble to emerge, if bubble-free is emerged, will be removed by the air-flow being passed through in inner ring fixture tracheae 2,
So that the pressure outside air pressure and the water surface in ring cavity 18 maintains an equal level, outer shroud fixture tracheae 3 is taken out out of the water surface, then by frock
It is placed in below the water surface, the front end for only retaining outer shroud fixture tracheae 3 is placed in more than the water surface, from the front end of outer shroud fixture tracheae 3 to cylinder
The air-flow of 0.5MPa is passed through in shape cavity, is observed 1 minute, checks junction, the outer shroud of inner ring fixture tracheae 2 and inner ring fixture 1
Whether fixture tracheae 3 and junction, outer shroud fixture 8 and the junction of inner ring fixture 1 of outer shroud fixture 8 have bubble to emerge, twice
Equal bubble-free, which is emerged, illustrates that the first sealing ring 31, the second sealing ring 32, the air-tightness of the 5th sealing ring 35 are good, then carries out step
The operation of C.Detection is caused to tie it is possible to prevente effectively from the first sealing ring 31, the second sealing ring 32, the 5th sealing ring 35 leak air
There is deviation in fruit.
The method of work of above-mentioned frock be suitable for examining internal expanding External Pressure Type, internal expanding type, External Pressure Type sealant rubber ring it is airtight
Property.
Obviously, above-described embodiment is only intended to clearly illustrate the utility model example, and is not to this reality
With the restriction of new embodiment.For those of ordinary skill in the field, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.And these
Belong to the spiritual changes and variations that derived from of the utility model still in the scope of protection of the utility model
Among.
Claims (7)
- A kind of 1. auxiliary seal cushion rubber air tight test frock in aviation graphite grazing, it is characterised in that including：Simulation stationary ring, Analog inner loop, simulation outer shroud, inner ring fixture and outer shroud fixture, the simulation stationary ring include inner ring sleeve that is coaxial and being wholely set With outer shroud boss, the outer shroud boss is fixed at the front end of the inner ring sleeve；The outside diameter of the analog inner loop, internal diameter with Outside diameter, the internal diameter of the inner ring sleeve are identical, and the outside diameter of the simulation outer shroud is identical with the outside diameter of the outer shroud boss, the mould Intend the annular outer wall and the endless inner wall clearance fit of the simulation outer shroud of inner ring, after simulation outer shroud and the analog inner loop socket Form the assembly identical with the simulation stationary ring shape；The outer shroud fixture includes ring-type stack shell and the cylinder bottom being wholely set, Circumferentially arranged circular step in the stack shell, the endless inner wall of the circular step and the simulation outer shroud, outer shroud boss it is outer Wall clearance fit, the cylinder bottom set outer shroud fixture tracheae；The inner ring fixture is disc-shaped, including at its end face axle center Cylindrical boss and the annulus at its end face edge, so as to be formed between the cylindrical boss and the annulus empty Chamber, the inner ring fixture set the inner ring fixture tracheae communicated with the cavity；The annular outer wall of the cylindrical boss and the simulation Inner ring, the inner wall clearance fit of inner ring sleeve, the outer wall of the annulus and the stack shell inner wall gap of the outer shroud fixture are matched somebody with somebody Close.
- 2. auxiliary seal cushion rubber air tight test frock according to claim 1, it is characterised in that the simulation outer shroud The circumferentially arranged annular groove of endless inner wall.
- 3. auxiliary seal cushion rubber air tight test frock according to claim 2, it is characterised in that the cylindrical boss Circumferentially arranged first annular groove of annular outer wall, the outer wall of the annulus set the second annular groove, and the circular step is interior along week To the 3rd annular groove of setting.
- 4. auxiliary seal cushion rubber air tight test frock according to claim 3, it is characterised in that the inner ring fixture Edge is additionally provided with stage portion.
- 5. auxiliary seal cushion rubber air tight test frock according to claim 4, it is characterised in that on the inner ring fixture Perforative first through hole is set, and the inner ring fixture tracheae is set through the first through hole, so that before inner ring folder is tracheate End is placed in ring cavity, and tail end is placed in outside inner ring fixture, and first is set between the inner ring fixture tracheae and the inner ring fixture Sealing ring is sealed；Centrally disposed perforative second through hole at the cylinder bottom, the outer shroud fixture tracheae pass through described second Through hole is set, so that outer shroud presss from both sides tracheate tail end and is placed in tubular cavity, front end is placed in outside outer shroud fixture, the outer shroud fixture gas The 5th sealing ring is set to be sealed between pipe and the cylinder bottom.
- 6. auxiliary seal cushion rubber air tight test frock according to claim 5, it is characterised in that the annulus Outer wall sets Blind locating holes, and the ring-type stack shell radially sets perforative positioning jack.
- 7. auxiliary seal cushion rubber air tight test frock according to claim 6, it is characterised in that along institute on the cylinder bottom The inner side for stating circular step sets multiple mutually disjunct boss, so that analog inner loop, simulation outer shroud are socketed in outer shroud fixture When, analog inner loop, the end of simulation outer shroud are supported by boss.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720753555.2U CN207351623U (en) | 2017-06-27 | 2017-06-27 | Auxiliary seal cushion rubber air tight test frock in a kind of aviation graphite grazing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720753555.2U CN207351623U (en) | 2017-06-27 | 2017-06-27 | Auxiliary seal cushion rubber air tight test frock in a kind of aviation graphite grazing |
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| CN207351623U true CN207351623U (en) | 2018-05-11 |
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| CN201720753555.2U Active CN207351623U (en) | 2017-06-27 | 2017-06-27 | Auxiliary seal cushion rubber air tight test frock in a kind of aviation graphite grazing |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141763A (en) * | 2017-06-27 | 2019-01-04 | 中国航发常州兰翔机械有限责任公司 | Auxiliary seal cushion rubber air tight test tooling in aviation graphite grazing |
| CN109238582A (en) * | 2018-11-05 | 2019-01-18 | 苏州科联盈自动化系统有限公司 | Closeouts and New energy automobile motor lid air tightness detection mechanism |
| CN109323822A (en) * | 2018-11-23 | 2019-02-12 | 中国航空工业集团公司沈阳飞机设计研究所 | Sealant experiments of sealing performance method |
| CN109470425A (en) * | 2018-11-23 | 2019-03-15 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of device checking graphite grazing component leakproofness |
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2017
- 2017-06-27 CN CN201720753555.2U patent/CN207351623U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109141763A (en) * | 2017-06-27 | 2019-01-04 | 中国航发常州兰翔机械有限责任公司 | Auxiliary seal cushion rubber air tight test tooling in aviation graphite grazing |
| CN109238582A (en) * | 2018-11-05 | 2019-01-18 | 苏州科联盈自动化系统有限公司 | Closeouts and New energy automobile motor lid air tightness detection mechanism |
| CN109238582B (en) * | 2018-11-05 | 2024-04-12 | 苏州科联盈自动化系统有限公司 | Sealing piece and new energy automobile motor cover air tightness detection mechanism |
| CN109323822A (en) * | 2018-11-23 | 2019-02-12 | 中国航空工业集团公司沈阳飞机设计研究所 | Sealant experiments of sealing performance method |
| CN109470425A (en) * | 2018-11-23 | 2019-03-15 | 中国航发沈阳黎明航空发动机有限责任公司 | A kind of device checking graphite grazing component leakproofness |
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