CN106225996B - Main shaft seals of shield machine system sealing performance test apparatus and test method - Google Patents
Main shaft seals of shield machine system sealing performance test apparatus and test method Download PDFInfo
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- CN106225996B CN106225996B CN201610829766.XA CN201610829766A CN106225996B CN 106225996 B CN106225996 B CN 106225996B CN 201610829766 A CN201610829766 A CN 201610829766A CN 106225996 B CN106225996 B CN 106225996B
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
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Abstract
The invention discloses a kind of main shaft seals of shield machine system sealing performance test apparatus and test methods.The experimental rig includes the first outer barrel, the second outer barrel and driving device being fixed on fixed frame, first outer barrel is coaxially arranged the first inner cylinder and forms the first gap, second outer barrel is coaxially arranged the second inner cylinder and forms the second gap, and the first main driving seal assembly to be measured and the second main driving seal assembly to be measured is respectively set in the first gap and the second gap.Pressure chamber is set between first gap and the second gap, and first inner cylinder left end be connected with driving device and by the driving device drive rotate, by the way that muddy water is perfused into pressure chamber, during the operating mode for the sealing system that analog main shaft is held examines the sealing performance of main driving seal assembly, and the data application that experiment is measured is researched and developed to new equipment, the encapsulation scheme of best performance is taken in new equipment, equipment construction risk is reduced, maintenance cost is reduced, makes the more stable safety of constructing tunnel.
Description
Technical field
The present invention relates to the technical field of sealing technology of the main bearing lubrication system of shield machine, TBM etc., more particularly to a kind of shield
Main bearing sealing system sealing property tester and test method.
Background technology
The rock tunnel(ling) machines such as shield machine, TBM are the main construction machineries in the driving shield-tunneling construction of underground, it is preventing soft base
While excavation face avalanche or holding excavation face are stablized, excavation and the lining cutting operation of tunnel can be safely carried out in machine, at present
It is widely used in the city underground in China, excessively the large tunnels engineering project such as river vcehicular tunnel, tunnel over strait.Shield
Structure main bearing is the core component of shield machine, plays a part of supporting shield cutter and is allowed to turn round broken rock.In work progress
In, the Water And Earth Pressures that rock tunnel(ling) machine is born are very high, if the leakage of main bearing lubrication oil or muddy water, grit and dregs enter master
Bearing lubrication system will lead to the rapid destruction of base bearing and gear pair.The base bearing of destruction need to excavate perpendicular above shield machine
Well hangs out replacement, and difficulty is very big, and immeasurable loss will be brought to shield-tunneling construction.
Lubricating system is isolated from the outside by main driving seal assembly, prevents muddy water, grit and dregs from entering base bearing
Lubricating system, main driving seal assembly are arranged in the gap between shaped seals support and seal cartridge, main driving sealing group
It is relatively rotated between the lip sealing ring and seal cartridge of part, the Seal Oil being generally separated out in gap in main driving seal assembly
Lubricating oil is injected in chamber to reduce friction.The lubricating oil injected in the type of the lubricating oil injected in seal oil chamber, seal oil chamber
Pressure, base bearing rotating speed and the factors such as the pressure of extraneous muddy water suffered by lip sealing ring can influence main driving sealing
The sealing performance of component.
As the quantity of the rock tunnel(ling) machines such as domestic market shield machine and TBM is on the increase, for being born in constructing tunnel
The risk that high pressure belt comes, for more steady safer during constructing tunnel, reduction equipment construction risk and maintenance cost, shield machine
Main shaft seals system just uses in equipment newly developed after need to simulating field investigation success on correlation test platform.Mesh
Before, there are no a kind of devices that can be tested the sealing performance of main driving seal assembly.
For these reasons, it is necessary to which a kind of main shaft seals of shield machine system sealing performance test apparatus and experiment are provided
Method.
Invention content
The technical problem to be solved in the present invention is to provide a kind of main shaft seals of shield machine system sealing performance test apparatus,
The experimental rig can simulate the working condition of main shaft seals of shield machine system, and close to the sealing system of main bearing of shield machine
Sealing property is tested.
Another technical problems to be solved of the invention are to provide a kind of main shaft seals of shield machine system sealing performance examination
Proved recipe method, to test the sealing performance of main shaft seals of shield machine system.
For for main shaft seals of shield machine system sealing performance test apparatus of the present invention this technical theme, use
One technical solution is：A kind of main shaft seals of shield machine system sealing performance test apparatus is provided, which includes：Gu
Determine frame and the first outer barrel on the fixed frame；It is coaxially set in the first inner cylinder of first outer barrel, this is in first
The first gap for the first main driving seal assembly to be measured to be arranged is formed between the outer wall and the inner wall of first outer barrel of cylinder, it should
Radial lubricating oil fill orifice is offered on the barrel of first outer barrel；Driving device on the fixed frame, this is in first
The left end of cylinder, which is connected with the driving device and is driven by the driving device, to be rotated, and then is rotated relative to first outer barrel；Peace
The second outer barrel on the fixed frame, and it is coaxially set in the second inner cylinder of second outer barrel, second inner cylinder
The second gap for the second main driving seal assembly to be measured to be arranged is formed between periphery wall and the internal perisporium of second outer barrel, it should
Radial lubricating oil fill orifice is offered on the barrel of second outer barrel；Second inner cylinder is identical as the outer diameter of first inner cylinder, should
The left end of second inner cylinder is fixedly connected with the right end co-axial seal of first inner cylinder；The internal diameter of second outer barrel and first outer barrel
Identical, the right end of first outer barrel is sealedly connected with the first pressure ring, and the left end of second outer barrel is sealedly connected with the second pressure ring, should
First pressure ring is sealed connected together with second pressure ring by connecting cylinder, and radial muddy water perfusion is offered on the connecting cylinder
Hole.
In another embodiment of main shaft seals of shield machine system sealing performance test apparatus of the present invention, driving dress
It sets including the hydraulic motor and base bearing on the fixed frame, the outer ring of the base bearing is fixed on the fixed frame, the master
The inner ring of bearing is provided with internal tooth, and the shaft end of the hydraulic motor is connected with the driving gear engaged with the base bearing, this is in first
The left end of cylinder is fixedly connected on the inner ring of the base bearing.
In another embodiment of main shaft seals of shield machine system sealing performance test apparatus of the present invention, this first
Axially spaced-apart opens up four groups of lubricating oil fill orifices on the barrel of outer barrel, and every group in circumferentially disposed at least one lubricating oil fill orifice；
Axially spaced-apart opens up three groups of lubricating oil fill orifices on the barrel of second outer barrel, and every group in circumferentially disposed at least one lubricating oil
Fill orifice.
In another embodiment of main shaft seals of shield machine system sealing performance test apparatus of the present invention, this first
It is opened up for temperature sensor mounted lubricating oil temperature detection hole on the barrel of inner cylinder and the second inner cylinder.
In another embodiment of main shaft seals of shield machine system sealing performance test apparatus of the present invention, the fixed frame
On be provided with the tachogenerator of rotating speed for measuring the base bearing.
In another embodiment of main shaft seals of shield machine system sealing performance test apparatus of the present invention, the connecting cylinder
Barrel on open up for the safe valve opening of connection safety valve and the pressure sensing port for connecting pressure sensor or pressure gauge.
In another embodiment of main shaft seals of shield machine system sealing performance test apparatus of the present invention, the hydraulic pressure horse
Up to for three Double-discharge hydraulic motors, each one driving gear of connection of the Double-discharge hydraulic motor, three driving gears with this
Base bearing engages；Peep hole is set on the right end setting observation side plate of second outer barrel, the observation side plate.
The present invention also provides a kind of main shaft seals of shield machine system sealing method for testing performances, include the following steps：
The first main driving seal assembly to be measured and the second main driving to be measured is respectively set in the first step in first gap and the second gap
Seal assembly；Second step, the lubricating oil temperature detection hole mounting temperature sensor on first inner cylinder and the second inner cylinder, at this
Safe valve opening on connecting cylinder installs safety valve, and the pressure sensing port connection pressure sensor on the connecting cylinder or pressure
Table；Third walks, the main drive to be measured of seal oil chamber and second being separated out in first gap to the first main driving seal assembly to be measured
Lubricating oil is injected in the seal oil chamber that dynamic sealing assembly is separated out in second gap；4th step, between the first gap and second
Injection pressure muddy water is filled in the pressure chamber being separated out among gap；5th step is arranged the rotating speed of the base bearing and the duration of runs and is tried
It tests, log；6th step dismantles main driving seal assembly and each peripheral equipment.
In a kind of another embodiment of main shaft seals of shield machine system sealing method for testing performance of the present invention, this
The first main driving seal assembly to be measured that one step is arranged in first gap includes three spaced first lip packing
Ring, three the first lip sealing rings are separated out two seal oil chambers in first gap；Second be arranged in second gap
Main driving seal assembly to be measured include three spaced second lip sealing rings, three the second lip sealing rings this second
Also two seal oil chambers are separated out in gap；Injecting lubricating oil into seal oil chamber in the second step is specially：To the first master to be measured
It is injected separately into gear oil and EP2 lubricating grease in two seal oil chambers being separated out in first gap of driving seal assembly, to the
It is also injected separately into gear oil and EP2 profits in two seal oil chambers that two main driving seal assemblies to be measured are separated out in second gap
Consistent lubricant；Gear oil continuously supplies, and stops pumping when gear oil pressure reaches 1bar, and EP2 lubricating grease continuously supplies, when
Stop pumping when EP2 grease pressures reach within the scope of 2.8bar~3.2bar；It is filled into the pressure chamber in 4th step
The injection pressure muddy water of 5bar；The rotating speed that the base bearing is arranged in 5th step is 10 revs/min, and the duration of runs is 30 minutes；The note
Recording test result includes：Whether the left end in first gap and the right end in second gap leak muddy water from the peep hole,
And the temperature change of gear oil is recorded at intervals of two minutes.
In a kind of another embodiment of main shaft seals of shield machine system sealing method for testing performance of the present invention, this
The first main driving seal assembly to be measured that one step is arranged in first gap includes three spaced first lip packing
Ring, three the first lip sealing rings are separated out two seal oil chambers in first gap；Second be arranged in second gap
Main driving seal assembly to be measured include three spaced second lip sealing rings, three the second lip sealing rings this second
Also two seal oil chambers are separated out in gap；Injecting lubricating oil into seal oil chamber in the second step is specially：To the first master to be measured
It is injected separately into gear oil and EP2 lubricating grease in two seal oil chambers being separated out in first gap of driving seal assembly, to the
It is also injected separately into gear oil and EP2 profits in two seal oil chambers that two main driving seal assemblies to be measured are separated out in second gap
Consistent lubricant；Gear oil continuously supplies, and stops pumping when gear oil pressure reaches 1bar, and EP2 lubricating grease continuously supplies, when
Stop pumping when EP2 grease pressures reach within the scope of 1.8bar~2.2bar；It is filled into the pressure chamber in 4th step
The injection pressure muddy water of 3bar；The rotating speed that the base bearing is arranged in 5th step is 5 revs/min, and the duration of runs is 240 minutes；The note
Recording test result includes：Whether the left end in first gap and the right end in second gap leak muddy water from the peep hole,
And every the temperature change of 10 minutes record gear oils.
Through the above scheme, the beneficial effects of the invention are as follows：Main shaft seals of shield machine system sealing performance examination of the present invention
Experiment device includes：Fixed frame and the first outer barrel on the fixed frame；Coaxially it is set in the first of first outer barrel
Inner cylinder is formed between the outer wall of first inner cylinder and the inner wall of first outer barrel for the first main driving seal assembly to be measured to be arranged
The first gap, offer radial lubricating oil fill orifice on the barrel of first outer barrel；Driving on the fixed frame
Device, the left end of first inner cylinder, which is connected with the driving device and is driven by the driving device, to be rotated, so relative to this
One outer barrel rotates；Second inner cylinder, second inner cylinder is identical as the outer diameter of first inner cylinder, the left end of second inner cylinder with this first
The right end co-axial seal of inner cylinder is fixedly connected；Second outer barrel, second outer barrel are coaxially set in the outside of second inner cylinder, this
It is formed between the inner wall of two outer barrels and the outer wall of second inner cylinder for being arranged between the second of the second main driving seal assembly to be measured
Gap offers radial lubricating oil fill orifice on the barrel of second outer barrel；The internal diameter phase of second outer barrel and first outer barrel
Together, the left end of second outer barrel is sealedly connected with the second pressure ring, and the right end of first outer barrel is sealedly connected with the first pressure ring, this
One pressure ring is sealed connected together with second pressure ring by connecting cylinder, and radial muddy water fill orifice is offered on the connecting cylinder,
And second outer barrel is fixed on the fixed frame.
By the way that muddy water, the operating mode for the sealing system that analog main shaft is held, between the first gap and second are perfused into pressure chamber
The first main driving seal assembly to be measured and the second main driving seal assembly to be measured, two kinds of main driving sealings to be measured are respectively set in gap
The type of lip sealing ring in component is different, injects different types of lubricating oil in seal oil chamber, and change in seal oil chamber
The pressure of lubricating oil simultaneously tests two kinds of lip sealing ring under the conditions of different tests.Led to by hydraulic motor
It crosses gear ring and drives the first inner cylinder and the rotation of the second inner cylinder, simulate the rotation of cutterhead under real working condition, observe lip sealing ring
Pressure bearing capacity and abrasion condition.
In short, carrying out different tests by changing experimental condition, pass through a series of Sensor monitoring base bearing
The sealing situation of operating and main driving seal assembly, can intuitively find out whether experimental rig leaks muddy water from peep hole.It will experiment
In obtained data feedback to the research and development of new equipment, the encapsulation scheme of best performance is taken in newly developed equipment, while anti-
It is fed in the equipment run under real working condition, reduces equipment construction risk, reduce maintenance cost, make the more stable peace of constructing tunnel
Entirely.
Description of the drawings
Fig. 1 is the sectional view of main shaft seals of shield machine system sealing performance test apparatus embodiment 1 of the present invention；
Fig. 2 is connection relation between the first outer barrel, the first inner cylinder, the second outer barrel and the second inner cylinder in part A in Fig. 1
Enlarged drawing；
Fig. 3 is the left view of main shaft seals of shield machine system sealing performance test apparatus embodiment 2 of the present invention.
Specific implementation mode
To facilitate the understanding of the present invention, in the following with reference to the drawings and specific embodiments, the present invention will be described in more detail.
The preferred embodiment of the present invention is given in attached drawing.But the present invention can realize in many different forms, and it is unlimited
In this specification described embodiment.Make to the disclosure on the contrary, purpose of providing these embodiments is
Understand more thorough and comprehensive.
It should be noted that unless otherwise defined, all technical and scientific terms used in this specification with belong to
The normally understood meaning of those skilled in the art of the present invention is identical.Used term in the description of the invention
It is to be not intended to the limitation present invention to describe the purpose of specific embodiment.Term "and/or" packet used in this specification
Include any and all combinations of one or more relevant Listed Items.
Below in conjunction with the accompanying drawings, various embodiments of the present invention are described in detail.
Embodiment 1
It is that main shaft seals of shield machine system sealing performance test apparatus of the present invention is real also referring to Fig. 1 and Fig. 2, Fig. 1
The sectional view of example 1 is applied, Fig. 2 is connected between the first outer barrel, the first inner cylinder, the second outer barrel and the second inner cylinder in part A in Fig. 1
The enlarged drawing of relationship.
Experimental rig of the present invention includes：Fixed frame 5 and the first outer barrel 2 on fixed frame 5, are coaxially set in first
The first inner cylinder 1 inside outer barrel 2 is formed to be measured for being arranged first between the outer wall of first inner cylinder 1 and the inner wall of the first outer barrel 2
First gap 3 of main driving seal assembly, offers radial lubricating oil fill orifice 4 on the barrel of the first outer barrel 2, first is to be measured
Main driving seal assembly includes at least one first lip sealing ring 901, and the first lip sealing ring 901 is in 3 interval of the first gap
Go out seal oil chamber 401, seal oil chamber injects lubricating oil, the both sides setting of the first lip sealing ring 901 by lubricating oil fill orifice 4
Pressure ring 902, pressure ring 902 are fixed on the inner wall of the first outer barrel 2, and close by O-ring between the inner wall of the first outer barrel 2
Envelope.
The experimental rig further includes the driving device being mounted on fixed frame 5, left end and the driving device phase of the first inner cylinder 1
It connects and is driven by driving device and rotated, and then rotated relative to the first outer barrel 2, when shield machine tunnels, driven by base bearing
Cutterhead constantly excavates face, this experimental rig drives base bearing rotation simulation real working condition by driving device.
Further include the second inner cylinder 11 and the second outer barrel 12, the second inner cylinder 11 is identical as the outer diameter of the first inner cylinder 1, the second inner cylinder
11 left end is fixedly connected with the right end co-axial seal of the first inner cylinder 1；Second outer barrel 12 is coaxially set in the outer of the second inner cylinder 11
Portion is formed between the inner wall of the second outer barrel 12 and the outer wall of the second inner cylinder 11 for the second main driving seal assembly to be measured to be arranged
Second gap 15 offers radial lubricating oil fill orifice on the barrel of second outer barrel 12；Second outer barrel 12 and the first outer barrel 11
Internal diameter it is identical, the left end of the second outer barrel 12 is sealedly connected with the second pressure ring 13, and the right end of the first outer barrel 11 is sealedly connected with
One pressure ring 14, the first pressure ring 14 are sealed connected together with the second pressure ring 13 by connecting cylinder 10, and diameter is offered on connecting cylinder 10
To muddy water fill orifice, and the second outer barrel 12 is fixed on fixed frame 5.The second main driving sealing to be measured being arranged in second gap
Component includes the second lip sealing ring 903, and the second lip sealing ring 903 is different from 901 type of the first lip sealing ring, therefore this
Experimental rig can test the sealing performance of two distinct types of lip sealing ring simultaneously.
Fixed frame 5 includes the first mounting plate 501 and the second mounting plate 502, the first mounting plate 501 and the second mounting plate 502
First inner cylinder, the first outer barrel, the second inner cylinder, the second outer barrel are clipped in the middle and are played a supporting role.
First gap 3 and the perforation of the second gap 15, the first master to be measured is respectively set in the first gap 3 and the second gap 15
After driving seal assembly and the second main driving seal assembly to be measured, it is separated out pressure chamber 7 among the first gap 3 and the second gap 15,
Injection pressure muddy water, the first main driving seal assembly and the second master are perfused into pressure chamber 7 by the muddy water fill orifice on connecting cylinder 10
Driving seal assembly plays the role of sealing in the first gap 3 and the second gap 15, prevents the muddy water in pressure chamber 7 by first
The right end in gap 3 penetrates into left end, and prevents the muddy water in pressure chamber 7 from penetrating into right end by the left end in the second gap 15.It is logical
Overtesting, to test the first main driving seal assembly to be measured and the second first gap of main driving seal assembly pair to be measured 3 and second
The sealing performance in gap 15.
Driving device include be mounted on the first mounting plate 501 on hydraulic motor 601 and base bearing 603, base bearing 603
Outer ring is fixed on the first mounting plate 501, and the inner ring of base bearing 603 is provided with internal tooth, the shaft end of hydraulic motor 601 be connected with
The driving gear 602 that base bearing 603 engages, the left end of the first inner cylinder 1 is fixedly connected on the inner ring of base bearing 603, in first
The left end of cylinder 1 extends radially inward forms connection ring 101, and connection ring 101 is used to be fixedly connected with the inner ring of base bearing 603,
And base bearing 603 is equivalent in shield machine for the bearing that is rotated with movable knife disc, in the end face of the right end of connection ring 101 and first
Floor 102, the bearing capacity for enhancing connection ring 101, when the inner ring of base bearing 603 rotates are set between the inner wall of cylinder 1
The first inner cylinder 1 is driven to rotate.
Axially spaced-apart opens up four groups of lubricating oil fill orifices 4 on the barrel of the first outer barrel 2, and every group circumferentially disposed at least one
A lubricating oil fill orifice, axially spaced-apart opens up three groups of lubricating oil fill orifices 4 on the barrel of the second outer barrel 12, and every group sets circumferentially
Set at least one lubricating oil fill orifice.The reason of multigroup lubricating oil fill orifice is arranged is that at the trial, the first main driving to be measured is close
Sealing assembly and the second main driving seal assembly to be measured can be separated out multiple seal oil chambers 401 in the first gap and the second gap, often
A seal oil chamber 401 is required for that lubricating oil is perfused by corresponding lubricating oil fill orifice.Preferably, every group of lubricating oil fill orifice 4
Six circumferentially are being respectively provided with, when needing that lubricating oil is perfused, can be simultaneously perfused with six lubricating oil fill orifices, such Seal Oil
Lubricating oil in chamber is evenly distributed and lubricating oil pressure is uniform, and better lubricant effect is played to lip sealing ring.
It opens up on the barrel of the first inner cylinder 1 and the second inner cylinder 11 and is examined for temperature sensor mounted lubricating oil temperature
Gaging hole, which is used for mounting temperature sensor 16, during experiment, due to the first lip sealing ring 901
There is pivoting friction between the first inner cylinder 1 and between the second lip sealing ring 903 and the second inner cylinder 11, in seal oil chamber 401
Lubricating oil temperature can increase, test the temperature change of lubricating oil by temperature sensor 16, and then it is close to monitor the first lip
Friction condition between seal ring 901 and the first inner cylinder 1 and between the second lip sealing ring 903 and the second inner cylinder 11.
The tachogenerator 17 of the rotating speed for measuring base bearing 603, the rotating speed of base bearing 603 are provided on fixed frame 5
It is very big to the effect of attrition of the first lip sealing ring 901 and the second lip sealing ring 903, so needing to monitor its rotating speed.
Also opened up on the barrel of connecting cylinder 10 for connection safety valve safe valve opening and for connect pressure sensor or
The pressure sensing port of pressure gauge, the pressure needs of injection pressure muddy water observe and record in pressure chamber 7, are on the one hand because of injection pressure muddy water
Pressure be a kind of experimental condition need the pressure of injection pressure muddy water in observational record, such as pressure chamber 7 could be provided as 3bar or
Pressure different 5bar etc.；On the other hand it is pressure excessive generation when preventing from testing because monitoring the pressure of injection pressure muddy water in real time
It is dangerous.Safety valve then can guarantee the pressure of injection pressure muddy water in pressure chamber 7 in safe range.Herein, the injection pressure in pressure chamber
Muddy water is injected by pressurized tank, muddy water with pressure is stored in pressurized tank, and pressurized tank is communicated to by pipeline on connecting cylinder 10
Muddy water fill orifice.
Peep hole is set on the right end setting observation side plate 18 of the second outer barrel 12, the observation side plate 18, passes through the observation
Observe whether the muddy water in pressure chamber is revealed by the left end in the first gap or the right end in the second gap at hole.When experiment, if profit
Lubricating oil is not perfused in lubricating oil fill orifice, also can observe whether muddy water has leakage at lubricating oil fill orifice.
Embodiment 2
Referring to Fig. 3, Fig. 3 is a left side for main shaft seals of shield machine system sealing performance test apparatus embodiment 2 of the present invention
View.
Embodiment 2 is being further improved to embodiment 1, includes identical technical characteristic in embodiment 1, experiment dress
Hydraulic motor 601 in the driving device set is three Double-discharge hydraulic motors, respectively one active of connection of Double-discharge hydraulic motor
Gear, three driving gears are engaged with base bearing, and the diameter of base bearing is very big, to ensure that driving device has enough power to drive
Base bearing rotates, therefore three hydraulic motors 601 are arranged, and Double-discharge hydraulic motor is convenient for the adjusting of base bearing rotating speed.
For the above-mentioned main shaft seals of shield machine system sealing performance test apparatus of the present invention, following specific sides may be used
Method is tested, and this method includes：
The first main driving seal assembly to be measured and second to be measured is respectively set in the first step in the first gap and the second gap
Main driving seal assembly.In the step, the first main driving seal assembly to be measured and the second main driving seal assembly to be measured respectively include
First lip sealing ring and the second lip sealing ring.
Second step, the lubricating oil temperature detection hole mounting temperature sensor on the first inner cylinder and the second inner cylinder, is connecting
Safe valve opening on cylinder installs safety valve, and the pressure sensing port connection pressure sensor on connecting cylinder or pressure gauge.
Third walks, the master to be measured of seal oil chamber and second being separated out in the first gap to the first main driving seal assembly to be measured
Lubricating oil is injected in the seal oil chamber that driving seal assembly is separated out in the second gap.The first lip sealing ring in the first step and
Second lip sealing ring is separated out seal oil chamber in the first gap and the second gap, and each seal oil chamber corresponds to one group of lubricating oil and fills
Orifice injects lubricating oil into corresponding seal oil chamber by lubricating oil fill orifice, the size of the pressure of the lubricating oil of injection with
And the type of lubricating oil can be different.
4th step fills injection pressure muddy water into pressure chamber, and the difference for the injection pressure mud hydraulic pressure filled in pressure chamber is to first
The influence of main driving seal assembly to be measured and the second main driving seal assembly sealing performance to be measured is different, and pressure is bigger, master to be measured
Drive the pressure of seal assembly carrying also bigger.
5th step is arranged the rotating speed of base bearing and the duration of runs and is tested, log；The rotating speed of base bearing
Abrasion with the main driving seal assembly to be measured of the duration of runs pair first and the second main driving seal assembly to be measured has a significant impact, and turns
Speed is faster, and the time is longer, then the abrasion of main driving seal assembly to be measured is more serious.
6th step dismantles main driving seal assembly and each peripheral equipment.Peripheral equipment in the step includes for being close
The oil pump of lubricating oil, pressurized tank from injection pressure muddy water to pressure chamber, the first inner cylinder and the second inner cylinder for filling is perfused in oil sealing chamber
On the temperature sensor of lubricating oil temperature detection hole installation, safe valve opening installation on connecting cylinder safety valve and connecting cylinder
On pressure sensing port connect pressure sensor or pressure gauge etc..
In the case where test theme is " the high speed and high pressure sealing performance test of combination lip sealing ring ", i.e., the first main driving to be measured
Seal assembly and the second main driving seal assembly to be measured are made of multiple first lip sealing rings and the second lip sealing ring respectively,
And base bearing drives the first inner cylinder and the second inner cylinder velocity of rotation to be set as quick, the injection pressure mud hydraulic pressure in pressure chamber is higher,
In such a situa-tion, it is tested, the main driving seal assembly to be measured of observation first and the second main driving seal assembly to be measured
Sealing performance.The test purpose of this method mainly examines main shaft seals of shield machine system under the conditions of base bearing runs at high speed
Sealing performance, examine elliptical gear influenced caused by sealing performance, the specific steps of this method include：
The first main driving seal assembly to be measured that the first step is arranged in the first gap includes three spaced the
One lip sealing ring, three the first lip sealing rings are separated out two seal oil chambers in the first gap；It is arranged in the second gap
The second main driving seal assembly to be measured include three spaced second lip sealing rings, three the second lip sealing rings exist
Also two seal oil chambers are separated out in second gap；
The second step injects lubricating oil into seal oil chamber：To the first main driving seal assembly to be measured between first
It is injected separately into gear oil and EP2 lubricating grease in two seal oil chambers being separated out in gap, is existed to the second main driving seal assembly to be measured
Also gear oil and EP2 lubricating grease are injected separately into two seal oil chambers being separated out in second gap, and (EP2 lubricating grease is Exxon U.S.
Inspire confidence in a kind of lubricating grease of model of lubricant corporation's production)；Gear oil continuously supplies, when gear oil pressure reaches 1bar
Stop pumping when (1bar=100 megapascal), EP2 lubricating grease continuously supplies, when EP2 grease pressures reach 2.8bar~
Stop pumping when within the scope of 3.2bar；
4th step fills the injection pressure muddy water of 5bar into pressure chamber；
The rotating speed that base bearing is arranged in 5th step is 10 revs/min, and the duration of runs is 30 minutes；Log packet
It includes：Whether the left end in the first gap and the right end in second gap leak muddy water from peep hole, and record at intervals of two minutes
The temperature change of gear oil.
In the case where test condition is " combination lip sealing ring low speed pressure-bearing wear testing ", i.e., the first main driving sealing group to be measured
Part and the second main driving seal assembly to be measured are made of multiple first lip sealing rings and the second lip sealing ring respectively, and main shaft
It holds and the first inner cylinder and the second inner cylinder velocity of rotation is driven to be set as low speed, but rotation time is long, injection is with certain in pressure chamber
The injection pressure muddy water of pressure is tested in such a situa-tion, observes the mill of the first lip sealing ring and the second lip sealing ring
Damage amount and sealing performance.The test purpose of this method mainly examines main shaft seals of shield machine system when base bearing is longer
Between sealing performance under operating condition, be to be examined to the fatigability of sealing performance, this method specific steps include：
The first main driving seal assembly to be measured that the first step is arranged in first gap includes that three intervals are arranged
The first lip sealing ring, three the first lip sealing rings are separated out two seal oil chambers in the first gap；In the second gap
The second main driving seal assembly to be measured being arranged includes three spaced second lip sealing rings, three the second lip packing
Ring is also separated out two seal oil chambers in the second gap；
The second step injects lubricating oil into seal oil chamber：To the first main driving seal assembly to be measured between first
It is injected separately into gear oil and EP2 lubricating grease in two seal oil chambers being separated out in gap, is existed to the second main driving seal assembly to be measured
It is also injected separately into gear oil and EP2 lubricating grease in two seal oil chambers being separated out in second gap；Gear oil continuously supplies, when
Stop pumping when gear oil pressure reaches 1bar, EP2 lubricating grease continuously supplies, when EP2 grease pressures reach 1.8bar~
Stop pumping when within the scope of 2.2bar；
The injection pressure muddy water of 3bar is filled in 4th step into pressure chamber；
The rotating speed that base bearing is arranged in 5th step is 5 revs/min, and the duration of runs is 240 minutes；Log packet
It includes：Whether the left end in the first gap and the right end in the second gap leak muddy water from peep hole, and record tooth every 10 minutes
Take turns the temperature change of oil.The left end in the first gap and the right end in the second gap whether leak muddy water represent the first lip sealing ring and
The temperature change of the wear resistance and sealing performance of second lip sealing ring, gear oil represents the first lip sealing ring and
The size of friction between two lip sealing rings and the first inner cylinder and the second inner cylinder, the temperature change the big, rubs bigger.
After dismantling main driving seal assembly in 6th step, the mill of the first lip sealing ring and the second lip sealing ring is observed
Damage amount.
Based on above example, main shaft seals of shield machine system sealing performance test apparatus provided by the invention includes：
Fixed frame and the first outer barrel on fixed frame；Coaxial the first inner cylinder for being set in the first outer barrel, the first inner cylinder
The first gap for the first main driving seal assembly to be measured to be arranged, the first outer barrel are formed between outer wall and the inner wall of the first outer barrel
Barrel on offer radial lubricating oil fill orifice；Driving device on fixed frame, the left end of the first inner cylinder and drive
Dynamic device, which is connected and is driven by driving device, to be rotated, and then is rotated relative to the first outer barrel；Second inner cylinder, the second inner cylinder and
The outer diameter of one inner cylinder is identical, and the left end of the second inner cylinder is fixedly connected with the right end co-axial seal of the first inner cylinder；Second outer barrel, second
Outer barrel is coaxially set in the outside of the second inner cylinder, is formed between the inner wall of the second outer barrel and the outer wall of the second inner cylinder for being arranged the
Second gaps of two main driving seal assemblies to be measured, offer radial lubricating oil fill orifice on the barrel of the second outer barrel；Second
Outer barrel is identical as the internal diameter of the first outer barrel, and the left end of the second outer barrel is sealedly connected with the second pressure ring, the right end sealing of the first outer barrel
It is connected with the first pressure ring, the first pressure ring is sealed connected together with the second pressure ring by connecting cylinder, and radial direction is offered on connecting cylinder
Muddy water fill orifice, and the second outer barrel is fixed on fixed frame.
By the way that muddy water, the operating mode for the sealing system that analog main shaft is held, between the first gap and second are perfused into pressure chamber
The first main driving seal assembly to be measured and the second main driving seal assembly to be measured, two kinds of main driving sealings to be measured are respectively set in gap
The type of lip sealing ring in component is different, injects different types of lubricating oil in seal oil chamber, and change in seal oil chamber
The pressure of lubricating oil simultaneously tests two kinds of lip sealing ring under the conditions of different tests.Led to by hydraulic motor
It crosses gear ring and drives the first inner cylinder and the rotation of the second inner cylinder, simulate the rotation of cutterhead under real working condition, observe lip sealing ring
Pressure bearing capacity and abrasion condition.
In short, carrying out different tests by changing experimental condition, pass through a series of Sensor monitoring base bearing
The sealing situation of operating and main driving seal assembly, can intuitively find out whether experimental rig leaks muddy water from peep hole.It will experiment
In obtained data feedback to the research and development of new equipment, the encapsulation scheme of best performance is taken in newly developed equipment, while anti-
It is fed in the equipment run under real working condition, reduces equipment construction risk, reduce maintenance cost, make the more stable peace of constructing tunnel
Entirely.
Example the above is only the implementation of the present invention is not intended to limit the scope of the invention, every to utilize this hair
Equivalent structure transformation made by bright specification and accompanying drawing content is applied directly or indirectly in other relevant technical fields,
It is included within the scope of the present invention.
Claims (10)
1. a kind of main shaft seals of shield machine system sealing performance test apparatus, which is characterized in that the experimental rig includes：
Fixed frame and the first outer barrel on the fixed frame；
It is coaxially set in the first inner cylinder of first outer barrel, the outer wall of first inner cylinder is interior with first outer barrel
The first gap for the first main driving seal assembly to be measured to be arranged is formed between wall, is offered on the barrel of first outer barrel
Radial lubricating oil fill orifice；
The left end of driving device on the fixed frame, first inner cylinder is connected with the driving device and by institute
It states driving device and drives rotation, and then rotated relative to first outer barrel；
The second outer barrel on the fixed frame, and coaxially it is set in the second inner cylinder of second outer barrel, institute
It states and is formed between the periphery wall of the second inner cylinder and the internal perisporium of second outer barrel for the second main driving sealing group to be measured to be arranged
Second gap of part offers radial lubricating oil fill orifice on the barrel of second outer barrel；
Second inner cylinder is identical as the outer diameter of the first inner cylinder, the right side of the left end of second inner cylinder and first inner cylinder
End co-axial seal is fixedly connected；
Second outer barrel is identical as the internal diameter of the first outer barrel, and the right end of first outer barrel is sealedly connected with the first pressure
The left end of ring, second outer barrel is sealedly connected with the second pressure ring, and first pressure ring passes through connecting cylinder with second pressure ring
It is sealed connected together, radial muddy water fill orifice is offered on the connecting cylinder.
2. main shaft seals of shield machine system sealing performance test apparatus according to claim 1, which is characterized in that described
Driving device includes the hydraulic motor and base bearing being mounted on the fixed frame, and the outer ring of the base bearing is fixed on described solid
Determine on frame, the inner ring of the base bearing is provided with internal tooth, and the shaft end of the hydraulic motor is connected with engages with the base bearing
The left end of driving gear, first inner cylinder is fixedly connected on the inner ring of the base bearing.
3. main shaft seals of shield machine system sealing performance test apparatus according to claim 2, which is characterized in that in institute
It states axially spaced-apart on the barrel of the first outer barrel and opens up four groups of lubricating oil fill orifices, each group in circumferentially disposed at least one lubricating oil
Fill orifice；Axially spaced-apart opens up three groups of lubricating oil fill orifices on the barrel of second outer barrel, each group it is circumferentially disposed extremely
A few lubricating oil fill orifice.
4. main shaft seals of shield machine system sealing performance test apparatus according to claim 3, which is characterized in that in institute
It states and is opened up on the barrel of the first inner cylinder and the second inner cylinder for temperature sensor mounted lubricating oil temperature detection hole.
5. main shaft seals of shield machine system sealing performance test apparatus according to claim 4, which is characterized in that described
The tachogenerator of the rotating speed for measuring the base bearing is provided on fixed frame.
6. main shaft seals of shield machine system sealing performance test apparatus according to claim 5, which is characterized in that described
It is opened up on the barrel of connecting cylinder for the safe valve opening of connection safety valve and the pressure for connecting pressure sensor or pressure gauge
Detection hole.
7. main shaft seals of shield machine system sealing performance test apparatus according to claim 6, which is characterized in that described
Hydraulic motor is three Double-discharge hydraulic motors, and the Double-discharge hydraulic motor respectively connects a driving gear, three driving tooths
Wheel is engaged with the base bearing；Observation is set on the right end setting observation side plate of second outer barrel, the observation side plate
Hole.
8. a kind of main shaft seals of shield machine system sealing method for testing performance passes through the shield machine main shaft described in claim 7
It holds sealing system sealing property tester to be tested, which is characterized in that the test method includes：
The first main driving seal assembly to be measured and second to be measured is respectively set in the first step in first gap and the second gap
Main driving seal assembly；
Second step, the lubricating oil temperature detection hole mounting temperature sensor on first inner cylinder and the second inner cylinder, described
Safe valve opening on connecting cylinder installs safety valve, and the pressure sensing port connection pressure sensor on the connecting cylinder or pressure
Table；
Third walks, the seal oil chamber being separated out in first gap to the first main driving seal assembly to be measured and the second master to be measured
Lubricating oil is injected in the seal oil chamber that driving seal assembly is separated out in second gap；
4th step, to first gap and the second gap among fill injection pressure muddy water in the pressure chamber that is separated out；
5th step is arranged the rotating speed of the base bearing and the duration of runs and is tested, log；
6th step dismantles main driving seal assembly and each peripheral equipment.
9. main shaft seals of shield machine system sealing method for testing performance according to claim 8, it is characterised in that：
The first main driving seal assembly to be measured that the first step is arranged in first gap includes three spaced
First lip sealing ring, three the first lip sealing rings are separated out two seal oil chambers in first gap；Described second
The second main driving seal assembly to be measured being arranged in gap includes three spaced second lip sealing rings, three the second lips
V-shaped ring is also separated out two seal oil chambers in second gap；
Injecting lubricating oil into seal oil chamber in the third step is specially：To the first main driving seal assembly to be measured described
It is injected separately into gear oil and EP2 lubricating grease in two seal oil chambers being separated out in one gap, to the second main driving sealing group to be measured
It is also injected separately into gear oil and EP2 lubricating grease in two seal oil chambers that part is separated out in second gap；Gear oil connects
Continuous supply, stops pumping when gear oil pressure reaches 1bar；EP2 lubricating grease continuously supplies, when EP2 grease pressures reach
Stop pumping when within the scope of 2.8bar~3.2bar；
The injection pressure muddy water of 5bar is filled in 4th step into the pressure chamber；
The rotating speed that the base bearing is arranged in 5th step is 10 revs/min, and the duration of runs is 30 minutes；The record experiment
As a result include：Whether the left end in first gap and the right end in second gap leak muddy water from the peep hole,
And the temperature change of gear oil is recorded at intervals of two minutes.
10. main shaft seals of shield machine system sealing method for testing performance according to claim 8, it is characterised in that：
The first main driving seal assembly to be measured that the first step is arranged in first gap includes three spaced
First lip sealing ring, three the first lip sealing rings are separated out two seal oil chambers in first gap；Described second
The second main driving seal assembly to be measured being arranged in gap includes three spaced second lip sealing rings, three the second lips
V-shaped ring is also separated out two seal oil chambers in second gap；
Injecting lubricating oil into seal oil chamber in the third step is specially：To the first main driving seal assembly to be measured described
It is injected separately into gear oil and EP2 lubricating grease in two seal oil chambers being separated out in one gap, to the second main driving sealing group to be measured
It is also injected separately into gear oil and EP2 lubricating grease in two seal oil chambers that part is separated out in second gap；Gear oil connects
Continuous supply, stops pumping when gear oil pressure reaches 1bar, EP2 lubricating grease continuously supplies, when EP2 grease pressures reach
Stop pumping when within the scope of 1.8bar~2.2bar；
The injection pressure muddy water of 3bar is filled in 4th step into the pressure chamber；
The rotating speed that the base bearing is arranged in 5th step is 5 revs/min, and the duration of runs is 240 minutes；The record experiment
As a result include：Whether the left end in first gap and the right end in second gap leak muddy water from the peep hole,
And every the temperature change of 10 minutes record gear oils.
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| CN111947857B (en) * | 2020-09-03 | 2022-05-03 | 中船重型装备有限公司 | Shield machine main drive seal air tightness detection method |
| CN112033676B (en) * | 2020-09-03 | 2022-06-24 | 中铁隧道局集团有限公司 | Shield machine main bearing detection device and repair method |
| CN113290901A (en) * | 2021-01-12 | 2021-08-24 | 优泰科(苏州)密封技术有限公司 | Shield seal forming method |
| CN113639929A (en) * | 2021-07-30 | 2021-11-12 | 扬州地龙机械有限公司 | Shield constructs owner bearing sealing system sealing performance test device |
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