CN109883616A - A kind of shield grease special measuring of resistance to water tightness instrument and test method - Google Patents
A kind of shield grease special measuring of resistance to water tightness instrument and test method Download PDFInfo
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- CN109883616A CN109883616A CN201910246041.1A CN201910246041A CN109883616A CN 109883616 A CN109883616 A CN 109883616A CN 201910246041 A CN201910246041 A CN 201910246041A CN 109883616 A CN109883616 A CN 109883616A
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Abstract
The present invention relates to a kind of shield grease special measuring of resistance to water tightness instrument and test methods.Determining instrument is mainly made of high-pressure air source, two-way pressurized control device, test cylinder and relief valve in parallel.Two-way pressurized control device is by pressure duct joint test cylinder.In test cylinder bottom part body, test sieve plate is set.Test method is to be put into test sieve plate in test cylinder first and inject shield grease, injects water on grease top.It is pressurizeed by two-way pressurizing control system to test cylinder, and is keeping certain time under authorized pressure.Whether observation test cylinder bottom has water from test sieve plate exudation, while recording grease leakage amount.The test equipment and test method, by the way that the resistance to water sealing property of shield grease can be effectively reflected to Work condition analogue of the shield grease under high pressure water environment in shield-tunneling construction.
Description
Technical field
The invention belongs to lubricant grease technical field, in particular to one kind is exclusively used in investigating shield under high pressure water environment
The determining instrument and test method of the resistance to water sealing property of grease.
Background technique
Shield is the main method of constructing tunnel in current Construction of Urban Rail Traffic.In shield-tunneling construction, used shield
Tail stop-leak compound and main shaft seals rouge are collectively referred to as shield grease.Shield grease improves cutterhead sealing to preventing mud and water from penetrating into
Effect, and in the friction for reducing associated components, and guarantee construction safety, promote drivage efficiency etc., all there is important work
With.
Resistance to water tightness is to evaluate a very crucial index of shield grease technical performance.But at present both at home and abroad
Measurement to shield grease water pressure resistance performance there is no and develop special determining instrument, also without making unified and standard test
Method.Currently, being usually voluntarily to build the easy experimental rig of some cylinders, the simulated determination of Lai Jinhang Water Pressure Resistance.
The existing easy experimental rig of cylinder built, there are many defects in structure, and it is complicated for operation, test error is big, suitable
Answering property is poor.The existing water-fast sealing test method of shield grease, in the normalization, uniformity and test result of test method
Accuracy, reproducibility etc., the actual needs of current shield industry development can not be met.Therefore, at present there is an urgent need to
A kind of dedicated determining instrument of the resistance to water tightness of related shield grease and specification, unified test method.
Summary of the invention
The purpose of the present invention, it is single, easy to operate to be to provide a kind of structure cylinder, and measurement result is accurate, reliable shield grease
The special measuring of resistance to water tightness instrument and corresponding test method.Using high-pressure air source, two-way pressurized control device in parallel, examination
Cylinder and relief valve are tested, constitutes a kind of special measuring instrument of resistance to water sealing property of shield grease, and propose corresponding with instrument
Test method there is no open report.
The technical solution of the shield grease special measuring of resistance to water tightness instrument is in the present invention:
A kind of shield grease special measuring of resistance to water tightness instrument, determining instrument is mainly by high-pressure air source, two-way in parallel
Pressurized control device, test cylinder and relief valve are constituted；High-pressure air source provides high pressure for two-way pressurized control device and test cylinder
Test gas；Pipeline A and pipeline B are provided on two-way pressurized control device in parallel；In two-way pressurized control device gas circuit
On, it is disposed with pressure regulator valve, pressure transmitter and switch electromagnetic valve；Two-way pressurized control device, relief valve and test cylinder
It is linked together by four entire bodies.
The determining instrument, it is characterized in that in the test cylinder by top cover labyrinth, seal O-ring, test cylinder main body, rouge
Sieve plate, gasket ring, test sieve plate, support chip, lower sealing cover is flattened to be constituted.
The test cylinder, it is characterized in that being divided into upper layer air cavity, middle layer water cavity and lower layer's grease in the test cylinder main body
Three sections of chamber；Between water cavity and grease chamber, it is provided with the rouge that aperture is 20~200 mesh and flattens sieve plate；Test cylinder is provided with close
Capping and lower sealing cover are provided with seal O-ring in the lower part of top cover labyrinth, realize the sealing to test cylinder body top,
Lower sealing cover top is provided with compression gasket ring, realizes the sealing to test cylinder lower body part；It is provided on support chip top
Aperture is the test sieve plate of 20~200 mesh；Support chip is provided between test sieve plate and lower sealing cover.
The determining instrument, it is characterized in that the plenum system of the two-way pressurized control device, is high-pressure air source first
High pressure gas is provided to two pipelines in parallel respectively, two-way gas circuit carries out pressure regulation by pressure regulator valve respectively again, then passes through pipeline
In pressure transmitter carry out pressure show, last high pressure gas by seal nipple to test cylinder air-chamber pressing.
The determining instrument, it is characterized in that the regulation method of the two-way pressurized control device, is pressurizeed by two-way
Staged improves test pressure to control device from low to high；It first turns on pipeline A switch electromagnetic valve to supply test cylinder, passes through tune
Pressure valve is adjusted to the pressure of setting, then starts to carry out the 1st constant pressure test by the time of setting test；In pipeline A off-test
Before, the setting of pipeline B pressure is completed, pipeline B is made to rise to higher pressure；After the test to pipeline A, pipeline A switch electromagnetic valve
It closes, pipeline B switch electromagnetic valve is opened, and pipeline B starts to supply test cylinder later；By setting and the 1st identical test
Time starts the 2nd constant pressure test；Test pressure is increased by the blocked operation of pipeline A and pipeline B, and successively by identical
Test period starts constant pressure test；Finally by test cylinder pressure rise to the highest test pressure of setting, carry out waiting time conditions
Under constant pressure test.
Entire air-channel system, is connected by pressure duct.
The water-fast sealing test method of shield grease corresponding to the determining instrument, it is characterized in that being mentioned by high-pressure air source
For high-potting gas to test cylinder air cavity, so that the pure water of middle injection in water cavity be made to obtain same high pressure；High pressure is pure
Water is by flattening sieve plate, directly acting on the surface of shield grease in grease chamber or permeating inside grease；Shield grease it is resistance to
Water tightness is by observing in regulation test period and under test pressure, if has water to pass through test cylinder bottom test sieve
Plate leaks out and measures the amount of leakage of grease to measure；Gas path on-off switching is carried out by pipeline switch solenoid valve；Pass through
Relief valve completes the pressure release to test cylinder and two-way pressurized control device.
The test method, it is characterized in that the high-pressure air source is high pressure nitrogen or pressure-air, it is desirable that pressure limit
For 4.0~5.0MPa.
The test method, it is characterized in that the determination of each rank test pressure, is by initial trial pressure 0.5MPa
Consecution natural number multiple successively increases, and highest allowable test pressure is≤4.0MPa.
The test method, it is characterized in that under each rank test pressure, the test period in constant voltage process is
60~300s, and the test period under each rank test pressure is consistent.
The test method it is characterized in that test hole diameter of sieve (perforated) plate is 20~200 mesh, and tests sieve plate and can be used 1~2
Layer.
The test method, it is characterized in that passing through test under the test pressure of setting and test period by observation
Whether sieve plate has water exudation from test cylinder bottom, while weighing grease amount of leakage (g) is test result；Anhydrous exudation, shield oil
Rouge is qualification；And when report test result, test hole diameter of sieve (perforated) plate, the test sieve plate number of plies, test pressure and test period must be indicated.
The shield grease special measuring of the resistance to water tightness instrument and test method, be suitable for investigate shield grease or its
The resistance to water sealing property of his material.
The water-fast sealing test method of shield grease, operating procedure corresponding to Instrumental of the present invention are: by 1~2 layer 20
The test sieve plate of~200 mesh is placed in test cylinder bottom, then shield grease sample is put into test cylinder by fixed lower sealing cover.
Sieve plate is flattened with the rouge of 1 layer of 20~200 mesh to be compacted sample.It is injected into test cylinder pure with shield grease sample equivalent
Water purification.Fixed top cover labyrinth, installs seal nipple.It adjusts pipeline A pressure regulator valve and carries out pressure regulation, open pipeline A switch electromagnetic valve and supply
Gas.Pressure transmitter show be adjusted to setting pressure 0.5MPa after, pipeline B switch electromagnetic valve is still in closed state at this time.Setting
Test period is 60~300s, starts to carry out the 1st constant pressure test.Before the 1st off-test, completes pipeline B pressure and set
It is set to 1.0MPa.After the test to the 1st constant pressure, pipeline A switch electromagnetic valve is closed, while pipeline B switch electromagnetic valve is opened,
Pipeline B starts to start to supply to test cylinder.Identical test period is tested by with the 1st time, starts the 2nd constant pressure test.Successively
Test pressure is increased by the consecution natural number multiple of 0.5MPa, and highest allowable test pressure is≤4.0MPa.It finally observes simultaneously
Whether report test cylinder bottom has water exudation, while weighing grease amount of leakage (g) is test result.The anhydrous leakage in test cylinder bottom
For qualification, it is unqualified for having water leakage.If under any pressure in test pressure < 4.0MPa, water is arranged at discovery test cylinder bottom
Exudation, then should stop testing immediately.
Off-test, pipeline A solenoid valve, pipeline B solenoid valve are all in off-position.Before dismantling test cylinder, first open
Relief valve is to system decompression.To test cylinder main body in test cylinder, top cover labyrinth, seal O-ring, rouge flatten sieve plate, gasket ring,
Test sieve plate, support chip, lower sealing cover etc. are cleaned, in case next time, test used.
The instrument can accurately determine the resistance to of shield grease by simulating to working condition environment in shield-tunneling construction
Hydraulic pressure performance, to effectively guarantee that shield-tunneling construction promotes safely.The apparatus structure cylinder list is, it can be achieved that semicontinuous operation.Examination
It is good to test a pressure holding effect, test error is small, high reliablity.Pass through the design of two-way gas circuit, it is ensured that test the uninterrupted of process
Operation, saves the time of pressure debugging.Testing time may be selected to set and can be automatically performed test, reduce testing crew
Operation difficulty.
Detailed description of the invention
Fig. 1 is the complete machine schematic diagram of this shield grease special measuring of resistance to water tightness instrument.
Fig. 2 is the test cylinder structure chart of this shield grease special measuring of resistance to water tightness instrument.
Wherein: 1. high pressure nitrogen gas sources；2. pipeline A pressure regulator valve；3. pipeline A pressure transmitter；4. pipeline A switchs electromagnetism
Valve；5. pipeline B pressure regulator valve；6. pipeline B pressure transmitter；7. pipeline B switch electromagnetic valve；8. relief valve；9. seal nipple；10.
Test cylinder；11. top cover labyrinth；12. seal O-ring；13. test cylinder main body；14. pure water；15. rouge flattens sieve plate；16. to be measured
Shield grease；17. gasket ring；18. testing sieve plate；19. support chip；20. lower sealing cover.
Specific embodiment
In the following with reference to the drawings and specific embodiments, to the composition of the shield grease special measuring of resistance to water tightness instrument, connection
Mode and specific test procedure are further described.
Test equipment of the invention is as shown in Figure 1, 2.
Test equipment of the invention mainly by high-pressure air source (1), two-way pressurized control device in parallel, test cylinder (10) and
Relief valve (8) is constituted；High-pressure air source one is that two-way pressurized control device and test cylinder (10) provide high-potting gas；Simultaneously
Pipeline A and pipeline B are provided on the two-way pressurized control device of connection；In two-way pressurized control device gas circuit, set gradually
There are pipeline A pressure regulator valve (2)/pipeline B pressure regulator valve (5), pipeline A pressure transmitter (3)/pipeline B pressure transmitter (6) and pipeline A
Switch electromagnetic valve (4)/pipeline B switch electromagnetic valve (7)；Two-way pressurized control device is by pressure duct joint test cylinder (10)；
Relief valve (8) and two-way pressurized control device, are connected by seal nipple (9) with test cylinder (10), realize system decompression.
Test equipment of the invention is in the test cylinder by top cover labyrinth (11), seal O-ring (12), test cylinder master
Body (13), rouge flatten sieve plate (15), gasket ring (17), test sieve plate (18), support chip (19), lower sealing cover (20) institute structure
At；Test cylinder main body (13) is divided into three sections of upper layer air cavity, middle layer water cavity and lower layer's grease chamber；Between water cavity and grease chamber, if
It is equipped with the rouge that aperture is 20~200 mesh and flattens sieve plate (15)；Test cylinder is provided with top cover labyrinth (11) and lower sealing cover (20),
The lower part of top cover labyrinth (11) is provided with seal O-ring (12), the sealing to test cylinder main body (13) top is realized, in lower sealing
Lid (20) top, which is provided with, compresses gasket ring (17), realizes the sealing to test cylinder main body (13) lower part；In support chip (19)
Top is provided with the test sieve plate (18) that aperture is 20~200 mesh；It is arranged between test sieve plate (18) and lower sealing cover (20)
There are support chip (19).
Embodiment 1
The test sieve plate of 2 layer of 20 mesh is placed in test cylinder bottom, fixed lower sealing cover, then by commercially available shield tail sealant
A weighs 102g and is put into test cylinder.20 mesh of sample flatten sieve plate compacting.Pure water 102g is infused into test cylinder.It is sealed in fixation
Lid installs seal nipple.
High pressure nitrogen gas source is set as to provide 4.5MPa pressure.Pipeline A pressure regulator valve is adjusted, pipeline A pressure transmitter is made
Pressure reaches 0.5MPa.By pipeline A switch electromagnetic valve to electric-opening, pipeline B switch electromagnetic valve is in off-position at this time.Setting
Test period is 300s, starts to carry out the 1st constant pressure test.Before the 1st off-test, completes pipeline B pressure and be set as
1.0MPa.After the test to the 1st constant pressure, pipeline A switch electromagnetic valve is closed, while pipeline B switch electromagnetic valve is opened, pipeline
B starts to supply test cylinder.Identical 300s test period is tested by with the 1st time, starts the 2nd constant pressure test.
Successively by the consecution natural number multiple of 0.5MPa increase test pressure respectively to 1.5MPa, 2.0MPa, 2.5MPa and
3.0MPa, until 3.5MPa stops.It is 300s that test period is kept under each pressure.Finally, observation under 3.5 test pressures, tries
It tests whether bottom has water exudation, while weighing grease amount of leakage (g).
Test result: in test 20 mesh of hole diameter of sieve (perforated) plate, 2 layers of the sieve plate number of plies of test, test pressure 3.5MPa and test period
Under the conditions of 300s, test cylinder bottom is anhydrous leaks out for observation, and weighings grease amount of leakage is 15.3g.Commercially available shield tail sealant A matter
Amount is qualification.
After the test, it opens relief valve and carries out pressure release.Each component of test cylinder is dismantled and cleans, in case next time uses.
Embodiment 2
The test sieve plate of 1 layer of 200 mesh is placed in test cylinder bottom, fixed lower sealing cover is then close by commercially available base bearing
Envelope rouge A weighs 100g and is put into test cylinder.200 mesh of sample flatten sieve plate compacting.Pure water 100g is infused into test cylinder.In fixation
Sealing cover installs seal nipple.
Pressure-air gas source is set as to provide 4.0MPa pressure.Pipeline A pressure regulator valve is adjusted, pipeline A pressure transmitter is made
Pressure reaches 0.5MPa.By pipeline A switch electromagnetic valve to electric-opening, pipeline B switch electromagnetic valve is in off-position at this time.Setting
Test period is 60s, starts to carry out the 1st constant pressure test.Before the 1st off-test, completes pipeline B pressure and be set as
1.0MPa.After the test to the 1st constant pressure, pipeline A switch electromagnetic valve is closed, while pipeline B switch electromagnetic valve is opened, pipeline
B starts to supply test cylinder.Identical 60s test period is tested by with the 1st time, starts the 2nd constant pressure test.
Successively by the consecution natural number multiple of 0.5MPa increase test pressure respectively to 1.5MPa, 2.0MPa, 2.5MPa and
3.0MPa, until 3.5MPa stops.It is 60s that test period is kept under each pressure.Finally, observation under 3.5 test pressures, is tested
Whether cylinder bottom has water exudation, while weighing grease amount of leakage (g).
Test result: in test 200 mesh of hole diameter of sieve (perforated) plate, 1 layer of the sieve plate number of plies of test, test pressure 3.5MPa and test period
Under the conditions of 60s, test cylinder bottom is anhydrous leaks out for observation, and weighings grease amount of leakage is 7.0g.Commercially available main shaft seals rouge A matter
Amount is qualification.
After the test, it opens relief valve and carries out pressure release.Each component of test cylinder is dismantled and cleans, in case next time uses.
Embodiment 3
The test sieve plate of 2 layer of 30 mesh is placed in test cylinder bottom, fixed lower sealing cover, then by commercially available shield tail sealant
B weighs 98g and is put into test cylinder.30 mesh of sample flatten sieve plate compacting.Pure water 98g is infused into test cylinder.Fixed top cover labyrinth,
Seal nipple is installed.
High pressure nitrogen gas source is set as to provide 5.0MPa pressure.Pipeline A pressure regulator valve is adjusted, pipeline A pressure transmitter is made
Pressure reaches 0.5MPa.By pipeline A switch electromagnetic valve to electric-opening, pipeline B switch electromagnetic valve is in off-position at this time.Setting
Test period is 240s, starts to carry out the 1st constant pressure test.Before the 1st off-test, completes pipeline B pressure and be set as
1.0MPa.After the test to the 1st constant pressure, pipeline A switch electromagnetic valve is closed, while pipeline B switch electromagnetic valve is opened, pipeline
B starts to supply test cylinder.Identical 240s test period is tested by with the 1st time, starts the 2nd constant pressure test.
Successively test pressure is increased respectively to 1.5MPa, 2.0MPa, 2.5MPa by the consecution natural number multiple of 0.5MPa
3.0MPa and 3.5MPa, until 4.0MPa stops.It is 240s that test period is kept under each pressure.Finally, observation is in 4.0 test pressures
Under power, whether test cylinder bottom has water exudation, while weighing grease amount of leakage (g).
Test result: in test 30 mesh of hole diameter of sieve (perforated) plate, 2 layers of the sieve plate number of plies of test, test pressure 4.0MPa and test period
Under the conditions of 240s, test cylinder bottom is anhydrous leaks out for observation, and weighings grease amount of leakage is 21.0g.Commercially available shield tail sealant B is produced
Quality is qualification.
After the test, it opens relief valve and carries out pressure release.Each component of test cylinder is dismantled and cleans, in case next time uses.
Embodiment 4
The test sieve plate of 1 layer of 30 mesh is placed in test cylinder bottom, fixed lower sealing cover, then by commercially available main shaft seals
Rouge B weighs 101g and is put into test cylinder.30 mesh of sample flatten sieve plate compacting.Pure water 101g is infused into test cylinder.It is close in fixation
Seal nipple is installed in capping.
Pressure-air gas source is set as to provide 5.0MPa pressure.Pipeline A pressure regulator valve is adjusted, pipeline A pressure transmitter is made
Pressure reaches 0.5MPa.By pipeline A switch electromagnetic valve to electric-opening, pipeline B switch electromagnetic valve is in off-position at this time.Setting
Test period is 240s, starts to carry out the 1st constant pressure test.Before the 1st off-test, completes pipeline B pressure and be set as
1.0MPa.After the test to the 1st constant pressure, pipeline A switch electromagnetic valve is closed, while pipeline B switch electromagnetic valve is opened, pipeline
B starts to supply test cylinder.Identical 240s test period is tested by with the 1st time, starts the 2nd constant pressure test.
Successively by 0.5MPa consecution natural number multiple increase test pressure respectively to 1.5MPa, 2.0MPa, 2.5MPa,
3.0MPa and 3.5MPa, until 4.0MPa stops.It is 240s that test period is kept under each pressure.Finally, observation is in 3.5 test pressures
Under power, whether test cylinder bottom has water exudation, while weighing grease amount of leakage (g).
Test result: in test 30 mesh of hole diameter of sieve (perforated) plate, 1 layer of the sieve plate number of plies of test, test pressure 4.0MPa and test period
Under the conditions of 240s, observation test cylinder bottom has droplet to leak out, and weighing grease amount of leakage is 38.0g.Commercially available main shaft seals
Rouge B mass is unqualified.
After the test, it opens relief valve and carries out pressure release.Each component of test cylinder is dismantled and cleans, in case next time uses.
Compared with the domestic and international existing easy experimental rig of cylinder voluntarily built, special measuring instrument test essence provided by the invention
Exactness significantly improves, and realizes semicontinuous operation, test process cylinder just, it is safe and reliable.Under the same test conditions, with
Instrument provided by the invention and method have the features such as normative strong, the accuracy height and high reproducibility of test result.The present invention
The special measuring instrument and test method of offer are suitable for shield ditch grease production, scientific research and shield-tunneling construction enterprise and carry out product matter
The evaluation and detection of amount.The present invention realizes that shield tunnel construction is safe and efficient for the stabilization of guarantee shield oil and fat product quality
Etc., all have significance.
Claims (10)
1. a kind of shield grease special measuring of resistance to water tightness instrument, it is characterized in that determining instrument is mainly by high-pressure air source, parallel connection
Two-way pressurized control device, test cylinder and relief valve constituted；High-pressure air source is that two-way pressurized control device is mentioned with test cylinder
For high-potting gas；Pipeline A and pipeline B are provided on two-way pressurized control device in parallel；It is filled in two-way pressurized control
It sets in gas circuit, is disposed with pressure regulator valve, pressure transmitter and switch electromagnetic valve；Two-way pressurized control device, relief valve and
Test cylinder is linked together by four entire bodies.
2. determining instrument as described in claim 1, it is characterized in that being divided into upper layer air cavity, middle layer water cavity in the test cylinder main body
With three sections of grease chamber of lower layer；Between water cavity and grease chamber, it is provided with the rouge that aperture is 20~200 mesh and flattens sieve plate；Test cylinder
It is provided with top cover labyrinth and lower sealing cover, the lower part of top cover labyrinth is provided with seal O-ring, realizes to test cylinder body top
Sealing, lower sealing cover top is provided with compression gasket ring, realizes the sealing to test cylinder lower body part；On support chip
Portion is provided with the test sieve plate that aperture is 20~200 mesh；Support chip is provided between test sieve plate and lower sealing cover.
3. determining instrument test method as described in claim 1, it is characterized in that being high-pressure air source first respectively in parallel two
A pipeline provides high pressure gas, and two-way gas circuit carries out pressure regulation by pressure regulator valve respectively again, then passes through the pressure transmitter in pipeline
It carries out pressure to show, last high pressure gas is by seal nipple to test cylinder air-chamber pressing.
4. test method as claimed in claim 3, it is characterized in that the regulation method of two-way pressurized control device is to pass through two-way
Staged improves test pressure to pressurized control device from low to high；It first turns on pipeline A switch electromagnetic valve to supply test cylinder, lead to
The pressure that pressure regulator valve is adjusted to setting is crossed, then starts to carry out the 1st constant pressure test by the time of setting test；It is tested in pipeline A
Before end, the setting of pipeline B pressure is completed, pipeline B is made to rise to higher pressure；After the test to pipeline A, pipeline A switch electricity
Magnet valve is closed, and pipeline B switch electromagnetic valve is opened, and pipeline B starts to supply test cylinder later；By the identical with the 1st time of setting
Test period starts the 2nd constant pressure test；Test pressure is increased by the blocked operation of pipeline A and pipeline B, and successively presses phase
Same test period starts constant pressure test；Finally by test cylinder pressure rise to the highest test pressure of setting, carry out waiting the times
Under the conditions of constant pressure test.
5. test method as claimed in claim 3, it is characterized in that providing high-potting gas to test cylinder gas by high-pressure air source
Chamber, so that the pure water of middle injection in water cavity be made to obtain same high pressure；High pressure pure water is directly acted on by flattening sieve plate
The surface of shield grease or infiltration are inside grease in grease chamber；The resistance to water tightness of shield grease is being provided by observation
Test period in and test pressure under, if having water by test cylinder bottom test sieve plate leak out and measure grease
Amount of leakage is measured；Gas path on-off switching is carried out by pipeline switch solenoid valve；It is completed by relief valve to test cylinder and two-way
The pressure release of pressurized control device.
6. test method as claimed in claim 3, it is characterized in that the high-pressure air source is high pressure nitrogen or pressure-air, it is desirable that
Pressure limit is 4.0~5.0 MPa.
7. test method as claimed in claim 4, it is characterized in that the determination of each rank test pressure, is by initial trial pressure
The consecution natural number multiple of 0.5MPa successively increases, and highest allowable test pressure is≤4.0MPa.
8. test method as claimed in claim 4, it is characterized in that the test under each rank test pressure, in constant voltage process
Time is 60~300s, and the test period under each rank test pressure is consistent.
9. test method as claimed in claim 6, it is characterized in that through observation under the test pressure of setting and test period,
Whether there is water exudation from test cylinder bottom by test sieve plate, while weighing grease amount of leakage is test result；Anhydrous exudation, shield
Structure grease is qualification；And when report test result, test hole diameter of sieve (perforated) plate, the test sieve plate number of plies, test pressure and test must be indicated
Time.
10. the shield grease special measuring of resistance to water tightness instrument as described in claim 1 be suitable for investigate shield grease or its
The resistance to water sealing property of his material.
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| CN201910246041.1A CN109883616B (en) | 2019-03-28 | 2019-03-28 | Special measuring instrument and testing method for water-resistant sealing performance of shield grease |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910246041.1A CN109883616B (en) | 2019-03-28 | 2019-03-28 | Special measuring instrument and testing method for water-resistant sealing performance of shield grease |
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| CN109883616B CN109883616B (en) | 2020-09-22 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112903198A (en) * | 2021-01-21 | 2021-06-04 | 北京交通大学 | Shield tail grease sealing performance detection platform |
| CN113834763A (en) * | 2021-04-19 | 2021-12-24 | 中国海洋石油集团有限公司 | Testing device and method for evaluating secondary sand prevention process in oil field development |
| CN115993302A (en) * | 2023-03-22 | 2023-04-21 | 中铁工程服务有限公司 | Shield tail grease detection device and detection method |
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