CN101718609B - Water-pressure resisting performance test device and method thereof of shield tail seal grease of shield machine - Google Patents
Water-pressure resisting performance test device and method thereof of shield tail seal grease of shield machine Download PDFInfo
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- CN101718609B CN101718609B CN2009102279884A CN200910227988A CN101718609B CN 101718609 B CN101718609 B CN 101718609B CN 2009102279884 A CN2009102279884 A CN 2009102279884A CN 200910227988 A CN200910227988 A CN 200910227988A CN 101718609 B CN101718609 B CN 101718609B
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Abstract
The invention discloses water-pressure resisting performance test device and method thereof of shield tail seal grease of a shield machine. The test device comprises a pressurizing device which is connected with a pressure-bearing barrel by means of a high-pressure pipeline, wherein the pressure-bearing barrel comprises an upper end cover and a bottom barrel, a compact steel wire mesh is pressed at the bottom of the bottom barrel, and a drain hole is arranged at the bottom of the bottom barrel. The test method comprises the following steps of: firstly putting the steel wire mesh and the seal grease in the pressure-bearing barrel, then injecting with water, manually wresting the pressurizing device for pressurizing, ensuring that the shield tail seal grease are kept for a specified period of time under a certain pressure, and observing whether water overflows at the drain hole. The test device can accurately test the water-pressure resisting performance of the shield tail seal grease by simulating the environment of the shield tail seal grease of the shield machine during the shield construction and has simper structure and low cost. The test method selects parameters in the test according to specific requirements iduring the shield construction and can further effectively ensure the accuracy of the test result and improve the construction safety and the construction quality.
Description
Technical field
The present invention relates to the water pressure resistance performance test field of seal grease, especially a kind of water pressure resistance performance test apparatus and method of testing thereof of shield machine shield tail seal grease.
Background technology
Shield-tunneling construction is the main method of present urban track traffic construction, in shield-tunneling construction, need between the shield tail sealing brush of shield machine, fill seal grease, be used for preventing that mud and water from infiltrating in the shield machine housing, and reduce the friction that the shield tail seals brush and section of jurisdiction, can effectively guarantee construction safety, improve operating efficiency.Therefore the shield tail is sealed in the shield-tunneling construction and plays an important role, and the quality of shield tail sealing depends on the performance of tail seal grease of shield, so the performance of tail seal grease of shield directly affects the quality and the safety of construction.Weigh a kind of performance of tail seal grease of shield, generally need the following several performances of test: water pressure resistance, adhesiveness, pumping, stability, volatility and lubricity etc.Wherein the water pressure resistance performance of grease is particularly important, and its quality influences the safety problem of shield-tunneling construction.Therefore the water pressure resistance performance of tail seal grease of shield is tested, can reduce the potential safety hazard of bringing because of the seal failure of shield tail effectively.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of simple in structure, test result water pressure resistance performance test apparatus of shield machine shield tail seal grease accurately and reliably.
The present invention also provides the method for testing of a kind of water pressure resistance performance test apparatus.
For solving the problems of the technologies described above, the technical scheme of the water pressure resistance performance test apparatus of shield machine shield tail seal grease is among the present invention: a kind of water pressure resistance performance test apparatus of shield machine shield tail seal grease, its key is to include in the structure: pressue device, pressue device is connected with the pressure-bearing tube by pressure duct, the pressure-bearing tube comprises upper end cover and end tube, and end tube bottom is pressed and is equipped with fine and close woven wire, end tube bottom also offers weep hole.
Preferably, above-mentioned pressue device includes: screw rod, screw rod one end are fixed in by nut on the flange of hydraulic cylinder, and the other end is provided with block plate, first baffle ring, compression spring, second baffle ring, nut successively.
Preferably, above-mentioned pressue device also can be and comprises by what hydraulic pump, hydraulic valve, supporting pipeline and control system were formed and add hydraulic circuit.
Preferably, tube of the above-mentioned end is connected with upper end cover by flange, is provided with the O RunddichtringO between the flange, and upper end cover top is provided with tensimeter and water intaking valve.
Preferably, the flange of the tailpiece of the piston rod of above-mentioned hydraulic cylinder is square flange or circular flange, and the other end is provided with water delivering orifice, exhausr port, and water delivering orifice is connected with the pressure-bearing tube through pressure duct, and exhausr port is equipped with vent valve.
Preferably, above-mentioned pressure duct is rubber high-pressure hose or metal hard tube, and vent valve is a high pressure air exhaust valve.
Preferably, above-mentioned fine and close woven wire is worked out for circle and by finer wire, and the slightly larger in diameter of fine and close woven wire is in end tube internal diameter, and fine and close woven wire is at least two-layer.
The step of the method for testing of this testing apparatus is among the present invention: fine and close woven wire is positioned over the bottom of pressure-bearing tube, then tail seal grease of shield is put into the pressure-bearing tube, tail seal grease of shield is tamped; Water filling in the pressure-bearing tube has water to overflow to the vent valve and stops; Manually turn the afterbody nut pressurization of pressue device, when tensimeter is shown as predetermined pressure, stop pressurization; Tail seal grease of shield keeps certain hour under predetermined pressure, whether observe weep hole has water to overflow.If the weep hole place does not have water droplet, and has only a spot of fluid to drip, show that then the water pressure resistance of this tail seal grease of shield is functional.
Adopt the beneficial effect that technique scheme produced to be: this water pressure resistance performance test apparatus is by simulating the environment of shield machine shield tail seal grease in the shield-tunneling construction, can test out the water pressure resistance performance of tail seal grease of shield exactly, effectively guarantee the safety of construction, and simple in structure; Pressurize is effective, can make equipment keep relative constant compression force by the compression spring that is provided with, and can avoid easily revealing the phenomenon that pressure is descended by the fluid media (medium) pressurization; Pressurize by manually turning pressue device in this method of testing, can save expensive power and control device, and can change the test parameter of this testing apparatus according to the difference of shield machine operating mode, such as pressure, dwell time etc., effectively guarantee simulation test result's reliability, improved the working security of shield machine.
Description of drawings
Fig. 1 is the synoptic diagram of the water tolerance performance test apparatus of this shield machine shield tail seal grease;
Wherein, 1, represent pressue device; 2, single-action hydraulic cylinder; 3, vent valve; 4, pressure duct; 5, tensimeter; 6, water intaking valve; 7, represent the pressure-bearing tube; 7-1 is the upper end cover of pressure-bearing tube, and 7-2 is the end tube of pressure-bearing tube; 8, fine and close woven wire; 9, nut; 10, bolt; 11, screw rod; 12, the afterbody nut of pressue device; (13,14) nut; 15, block plate; 16, first baffle ring; 17, compression spring; 18, second baffle ring; 19, O RunddichtringO; 20, weep hole.
Embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
Referring to accompanying drawing 1, it is the water pressure resistance performance test apparatus of shield machine shield tail seal grease, include in the structure: pressue device 1, pressue device 1 is connected with pressure-bearing tube 7 by pressure duct 4, pressure-bearing tube 7 comprises upper end cover 7-1 and end tube 7-2, end tube 7-2 presses the bottom and is equipped with fine and close woven wire 8, the tube end of end tube 7-2, offer weep hole 20, this testing apparatus is simulated the environment of shield machine shield tail seal grease in the shield-tunneling construction, can test out the water pressure resistance performance of tail seal grease of shield exactly, effectively guarantee the safety of construction, and simple in structure, cost is low.
Referring to accompanying drawing 1, pressue device 1 includes screw rod 11, screw rod 11 1 ends are fixed on the flange of single-action hydraulic cylinder 2 by nut, the other end is provided with block plate 15 successively, first baffle ring 16, compression spring 17, second baffle ring 18, nut 12, compression spring is preferably cylindroid helical-coil compression spring herein, first baffle ring 16, second baffle ring 18 and block plate can slide along screw rod 11, the block plate 15 and first baffle ring 16 can be fixed together, also can separate, be equipped with groove on first baffle ring 16 and second baffle ring 18, compression spring 17 is set on the screw rod 11 and its two ends are positioned in the groove of first baffle ring 16 and second baffle ring 18.Pressue device also can pressurize by hydraulic pump herein, and hydraulic valve is set in adding hydraulic circuit, then in supporting pipeline and the control system installed.
Above-mentioned end tube 7-2 is connected by flange with upper end cover 7-1, be provided with the O RunddichtringO between the flange, be used for the flange connections of seal and pressure bearing tube, end tube 7-2 presses the bottom and is equipped with fine and close woven wire 8, the weep hole 20 of a plurality of minor diameters evenly is set below the fine and close woven wire 8 of end tube bottom, the general even weep hole that 5 diameters are set is 3mm can meet the demands, upper end cover 7-1 is provided with tensimeter 5 and water intaking valve 6, fine and close woven wire 8 is worked out by finer wire, the slightly larger in diameter of woven wire is in end tube 7-2 internal diameter, generally can be provided with two-layer as required or the compound steel silk screen, with plant equipment fine and close woven wire 8 is pressed into the end tube of pressure-bearing tube during use.
The flange of the tailpiece of the piston rod of above-mentioned single-action hydraulic cylinder 2 is square or circular flange, the other end is provided with water delivering orifice, exhausr port, water delivering orifice is connected with pressure-bearing tube 7 through pressure duct 4, exhausr port is connected with vent valve 3, pressure duct 4 is preferably rubber high-pressure hose or metal hard tube herein, and vent valve 3 is a high pressure air exhaust valve.
The pressurization principle of this testing apparatus is to finish the pressure transmission by water, the bolt of the afterbody by turning pressue device passes to compression spring with power, compression spring passes to block plate by baffle ring with power then, block plate promotes the piston rod of hydraulic cylinder, transmits pressure by water then and finally finishes pressurization and pressurize.
At first be applied to the seal grease of capacity between woven wire and woven wire during the test of this water pressure resistance performance test apparatus and put it into the bottom of pressure-bearing tube 7, can place two-layer or composite steel silk screen as required, then a certain amount of tail seal grease of shield is put into pressure-bearing tube 7, the addition of seal grease varies in size and different according to the operating mode or the model of shield machine, and generally getting the thickness of tail seal grease of shield in the pressure-bearing tube in the simulation test is that 5cm gets final product; With the seal grease compacting, discharge the grease air entrapment, keep the excellent sealing between seal grease and the pressure-bearing tube inwall, sealing good between them is very important, otherwise can influence precision of test result; Upper end lid and bottom tube with pressure-bearing tube 7 connects with bolt by flange then, utilize the O RunddichtringO to guarantee the sealing effectiveness at its joint flange position, open vent valve 3 and water intaking valve 6, by water intaking valve 6 water filling in pressure-bearing tube 7, till in vent valve 3, having water to overflow, in the injecting process, make sluggish flow as far as possible, all be discharged from the gas in the assurance equipment; Close vent valve 3 and water intaking valve 6, manually turn the pressurization bolt of pressue device, piston rod to hydraulic cylinder 2 slowly pressurizes, when tensimeter shows that institute requires predetermined pressure, stop to turn bolt, make tail seal grease of shield require to keep certain hour under the pressure then, whether observe the weep hole place has water to overflow, testing preset pressure and dwell time herein decides according to the situation difference of grease situation and shield machine, need choose certain safety coefficient, thereby predetermined pressure and dwell time when determining test, the pressure-bearing tube both can be observed after keeping 60 minutes under the pressure of 3.5MPa, if the weep hole place has under the water droplet, show the water pressure resistance poor performance of this shield tail oil fat; If the weep hole place does not have water droplet, perhaps have only a spot of fluid to drip, show that the water pressure resistance of this shield tail oil fat is functional.Whether the weep hole that should check the pressure-bearing tube bottom before test earlier stops up in addition, and inspection method is: can be earlier inject a certain amount of water in the pressure-bearing tube, explanation does not have blockedly if weep hole leaks, and the pressure-bearing tube can carry out the water pressure resistance test, then water is outwelled.
Multiple modification to this testing apparatus will be conspicuous concerning those skilled in the art, and described herein general test equipment and method of testing can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments.Therefore, the present invention will can not be restricted to the structure and the method for testing apparatus as herein described, but will meet principle and features of novelty the wideest corresponding to scope with testing apparatus disclosed herein and method of testing.
Claims (8)
1. the water pressure resistance performance test apparatus of a shield machine shield tail seal grease, it is characterized in that: include in the structure: pressue device (1), pressue device (1) is by pressure duct
Be connected with pressure-bearing tube (7), pressure-bearing tube (7) comprises upper end cover (7-1) and end tube (7-2), and end tube (7-2) bottom pressure is equipped with fine and close woven wire (8) and end tube (7-2) bottom offers weep hole (20).
2. the water pressure resistance performance test apparatus of shield machine shield tail seal grease according to claim 1, it is characterized in that: described pressue device (1) includes: screw rod (11), screw rod (11) one ends are fixed in by nut on the flange of hydraulic cylinder (2), and the other end is provided with block plate (15), first baffle ring (16), compression spring (17), second baffle ring (18), nut (12) successively.
3. the water pressure resistance performance test apparatus of shield machine shield tail seal grease according to claim 1 is characterized in that: described pressue device comprises by what hydraulic pump, hydraulic valve, supporting pipeline and control system were formed and adds hydraulic circuit.
4. the water pressure resistance performance test apparatus of shield machine shield tail seal grease according to claim 1, it is characterized in that: tube of the described end (7-2) is connected with upper end cover (7-1) by flange, be provided with 0 RunddichtringO (19) between the flange, upper end cover (7-1) top is provided with tensimeter (5) and water intaking valve (6).
5. the water pressure resistance performance test apparatus of shield machine shield tail seal grease according to claim 2, it is characterized in that: the flange of the tailpiece of the piston rod of described hydraulic cylinder (2) is square flange or circular flange, the other end is provided with water delivering orifice, exhausr port, water delivering orifice is connected with pressure-bearing tube (7) through pressure duct (4), and exhausr port is equipped with vent valve (3).
6. the water pressure resistance performance test apparatus of shield machine shield tail seal grease according to claim 5 is characterized in that: described pressure duct (4) is rubber high-pressure hose or metal hard tube, and vent valve (3) is a high pressure air exhaust valve.
7. the water resistance testing apparatus of shield machine shield tail seal grease according to claim 1, it is characterized in that: described fine and close woven wire (8) is worked out for circle and by finer wire, the slightly larger in diameter of fine and close woven wire is in end tube (7-2) internal diameter, and fine and close woven wire (8) is at least two-layer.
8. the method for testing of the water pressure resistance performance test apparatus of a shield machine shield tail seal grease as claimed in claim 1, it is characterized in that steps of the method are: fine and close woven wire (8) is positioned over pressure-bearing tube (7) bottom, then tail seal grease of shield is put into pressure-bearing tube (7), tail seal grease of shield is tamped; Water filling in pressure-bearing tube (7) has water to overflow to the vent valve (3) and stops; Manually turn afterbody nut (12) pressurization of pressue device (1), stop when being shown as predetermined pressure pressurizeing to tensimeter (5); Tail seal grease of shield keeps certain hour under predetermined pressure, whether observe weep hole (20) has water to overflow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102279884A CN101718609B (en) | 2009-12-11 | 2009-12-11 | Water-pressure resisting performance test device and method thereof of shield tail seal grease of shield machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102279884A CN101718609B (en) | 2009-12-11 | 2009-12-11 | Water-pressure resisting performance test device and method thereof of shield tail seal grease of shield machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101718609A CN101718609A (en) | 2010-06-02 |
| CN101718609B true CN101718609B (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009102279884A Expired - Fee Related CN101718609B (en) | 2009-12-11 | 2009-12-11 | Water-pressure resisting performance test device and method thereof of shield tail seal grease of shield machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109883616A (en) * | 2019-03-28 | 2019-06-14 | 中国石油化工股份有限公司 | A kind of shield grease special measuring of resistance to water tightness instrument and test method |
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| CN102426080A (en) * | 2011-09-26 | 2012-04-25 | 张家港化工机械股份有限公司 | Valve inner leakage detection tool |
| CN105527169A (en) * | 2014-09-29 | 2016-04-27 | 上海宝钢工业技术服务有限公司 | Method for testing anti-hydropressure performance of shield tail sealing grease of shield machine |
| CN105300603B (en) * | 2015-10-27 | 2017-09-29 | 上海隧道工程有限公司 | The testing equipment of class rectangle shield tail sealing performance |
| CN105547611B (en) * | 2016-01-20 | 2018-03-09 | 昆山众备机械设备有限公司 | Shield machine shield ventral brush seals voltage-resisting test apparatus |
| CN106226003B (en) * | 2016-09-27 | 2018-09-28 | 中铁工程装备集团有限公司 | Shield machine shield ventral brush experiments of sealing performance method |
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| CN106525344A (en) * | 2016-12-14 | 2017-03-22 | 新乡市恒星科技有限责任公司 | Shield tail grease anti-hydraulic pressure sealing property test device |
| CN107478570A (en) * | 2017-07-25 | 2017-12-15 | 泰州格睿特新材料科技有限公司 | A kind of shield tail grease pressure resistant testing device |
| CN109060545A (en) * | 2018-08-24 | 2018-12-21 | 北京交通大学 | The Water Pressure Resistance device for dynamically detecting of tail seal grease of shield |
| CN110243546B (en) * | 2019-07-18 | 2024-04-23 | 中国铁建重工集团股份有限公司 | Articulated sealing test bed of heading machine |
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2009
- 2009-12-11 CN CN2009102279884A patent/CN101718609B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883616A (en) * | 2019-03-28 | 2019-06-14 | 中国石油化工股份有限公司 | A kind of shield grease special measuring of resistance to water tightness instrument and test method |
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| CN101718609A (en) | 2010-06-02 |
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