CN102590481A - Device and method for testing shield tail sealing oil pumping characteristic of shield tunneling machine - Google Patents
Device and method for testing shield tail sealing oil pumping characteristic of shield tunneling machine Download PDFInfo
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- CN102590481A CN102590481A CN2012100596769A CN201210059676A CN102590481A CN 102590481 A CN102590481 A CN 102590481A CN 2012100596769 A CN2012100596769 A CN 2012100596769A CN 201210059676 A CN201210059676 A CN 201210059676A CN 102590481 A CN102590481 A CN 102590481A
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- shield
- grease
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- tail seal
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Abstract
The invention discloses a device and a method for testing a shield tail sealing oil pumping characteristic of a shield tunneling machine, and is suitable for the technical field of shield tunneling construction. The device comprises an oil pump, a diaphragm pressure gauge and a pumping pipeline, wherein the pumping pipeline is connected with the outlet of the oil pump; and the diaphragm pressure gauge is communicated with the pumping pipeline. The device can be used for testing the pumping characteristics of different types of sealing oil, so that the quality of the pumping characteristics can be obtained. The invention has the beneficial effects that: the pumping characteristics of different types of sealing oil can be tested; the method is simple and feasible; a test result is accurate; the pumping characteristics of different types of sealing oil can be evaluated effectively; and important reference can be supplied to selection of shield tail sealing oil for the shield tunneling construction, so that the shield tunneling construction can be performed successfully.
Description
Technical field
The present invention relates to the shield-tunneling construction technical field, be specifically related to a kind of shield machine shield tail seal grease pumping performance proving installation and method of testing.
Background technology
In shield-tunneling construction, the sealing of shield tail is shield machine three one of sealing greatly, and it mainly acts on is that materials such as underground water, the synchronous grouting liquid that has elevated pressures, earth are kept off outside shield machine, produces danger in the shield machine body to prevent that slime water from infiltrating.The sealing of shield tail is with filling with tail seal grease of shield between the shield tail sealing brush; Make between the shield tail sealing brush that is full of tail seal grease of shield and the section of jurisdiction and closely contact the sealing that realizes the shield tail, tail seal grease of shield not only can effectively be filled the gap between shield tail sealing brush and the section of jurisdiction, can also effectively protect the sealing of shield tail to brush; Make its resistance to oxidation, anticorrosive; Can reduce simultaneously the wearing and tearing between itself and the section of jurisdiction, improve operating efficiency effectively, guarantee construction safety.Therefore tail seal grease of shield is the core ingredient of shield tail sealing.
The performance index of tail seal grease of shield mainly contain pumping, water pressure resistance property, volatility, stability etc.Wherein pumping performance is particularly important; Determining seal grease from the shield machine utility appliance, to arrive shield tail seals at smoothly through transfer pipeline; Therefore the safety that is related to shield-tunneling construction is carried out pumping performance to the seal grease of different brands different model and is detected the quality of estimating its pumping before construction, help seal grease that construction party selects high-quality for use as tail seal grease of shield; Guarantee the reliability of shield tail sealing, thereby reduce the potential safety hazard that to bring when constructing.
Summary of the invention
The technical matters that the present invention will solve provides a kind of shield machine shield tail seal grease pumping performance proving installation and the method for testing that can test grease pumping performance quality easily and effectively; Method is simple for this; Test findings is accurate; Can estimate the pumping performance of the grease of different brands model effectively, select tail seal grease of shield for use for shield-tunneling construction important references is provided, guarantee carrying out smoothly of shield-tunneling construction.
For solving the problems of the technologies described above, the technical scheme that the present invention taked is: a kind of shield machine shield tail seal grease pumping performance proving installation comprises grease pump, diaphragm and pumping pipeline; One end of said pumping pipeline is connected with the grease delivery side of pump, its other end opening; Said diaphragm is communicated with pumping line trackside portion.
The quantity of said diaphragm is more than 4.
The tail seal grease of shield pumping performance has reacted the conveying property when grease adopts grease pump to carry, and is one of key property of tail seal grease of shield, and grease pumping characteristic value is big more, and the pressure loss during conveying is big more, but pumping is poor more, and the flowability of grease is also poor more.
Utilize above-mentioned shield machine shield tail seal grease pumping performance proving installation to carry out the method for tail seal grease of shield pumping performance test, its concrete steps are following:
(1) in grease pump, fills with tail seal grease of shield;
(2) start grease pump, make its speed with 20ml/s carry out greasing to the pumping pipeline, the grease injection pressure flows out until the mouth of pipe of tail seal grease of shield from the pumping pipeline less than 2.5MPa;
(3) when tail seal grease of shield when the mouth of pipe of pumping pipeline steadily flows out, close grease pump, stop greasing, when the mouth of pipe of pumping pipeline no longer flows out grease, write down the measured force value of each diaphragm;
The quantity of (4) establishing diaphragm is n, and wherein n is the positive integer more than or equal to 4; Diaphragm is respectively A by numbering from the near to the remote apart from grease pump
1, A
2... A
n, the force value of corresponding each diaphragm is respectively P
1, P
2... P
n, establish diaphragm A
1And A
2Between distance be L
1, diaphragm A
2And A
3Between distance be L
2, and the like, diaphragm A
nWith the distance of the pumping pipeline mouth of pipe be L
n, according to the pumping performance formula, the pumping performance that can get tail seal grease of shield to be detected is:
(5) repeating step (2) to step is (4) 6 times; Obtain 6
values; Then said 6
values are averaged, can obtain the pumping performance value of this kind tail seal grease of shield;
(6) respectively different types of tail seal grease of shield is carried out above-mentioned test, obtain its corresponding pumping performance value respectively;
(7) the pumping performance value to different types of tail seal grease of shield compares, and the pumping performance value is more little, and pumping is good more.
It is the dense oily self-lubrication oil pump of NZ2.0SK/220 that above-mentioned grease pump selects for use the Shenzhen just flying to reach the model that mechanical company limited produces.
Above-mentioned diaphragm is selected the Y-M of Shanghai Automation Meter Factory No. 4 series diaphragm for use, and range is 0-2.5MPa.
It is the fluid pressure type high-pressure oil pipe of 6.5mm that above-mentioned pumping pipeline is selected internal diameter for use.
Beneficial effect of the present invention is following: through a kind of tail seal grease of shield pumping performance proving installation and method of testing are provided; And provide the computing formula of grease pumping characteristic value, can realize that test method is simple and easy to do to the test of variety classes grease pumping performance; Test findings is accurate; Can estimate the pumping performance of the grease of different brands model effectively, select tail seal grease of shield for use for shield-tunneling construction important references is provided, guarantee carrying out smoothly of shield-tunneling construction.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is done further detailed explanation.
Fig. 1 is the principle schematic of shield machine shield tail seal grease pumping performance proving installation of the present invention;
Wherein, 1, grease pump, 2, diaphragm, 3, pumping pipeline.
Embodiment
Embodiment
As shown in Figure 1, shield machine shield tail seal grease pumping performance proving installation comprises grease pump 1, diaphragm 2 and pumping pipeline 3; One end of said pumping pipeline 3 is connected with the outlet of grease pump 1, its other end opening; Said diaphragm 2 is communicated with pumping pipeline 3 sidepieces.It is the dense oily self-lubrication oil pump of NZ2.0SK/220 that grease pump 1 selects for use the Shenzhen just flying to reach the model that mechanical company limited produces.Diaphragm 2 is selected the Y-M of Shanghai Automation Meter Factory No. 4 series diaphragm for use, and range is 0-2.5MPa, and its quantity is 4.It is the fluid pressure type high-pressure oil pipe of 6.5mm that pumping pipeline 3 is selected internal diameter for use, is made up of the outer glue-line of the synthetic rubber of the synthetic rubber inner glue layer of anti-liquid, steel wire braid, anti-weather, and its length overall is 2 meters, is divided into four sections, 0.5 meter every section.
Utilize above-mentioned proving installation that first, second, the third three kinds of greases are carried out the pumping performance test, detailed process is following:
At first first kind grease is injected grease pump, connect pumping pipeline and diaphragm, open grease pump then, the pumping pipeline is carried out greasing, the grease injection pressure is less than 2.5MPa.When first kind grease when the mouth of pipe of pumping pipeline steadily flows out, close grease pump, stop greasing.Observe the outflow state of pumping pipeline mouth of pipe grease, when grease stopped to flow out, the force value of four diaphragms of record obtained following experimental data:
| Fat type | Tensimeter A 1 | Tensimeter A 2 | Tensimeter A 3 | Tensimeter A 4 |
| First | 1.0MPa | 0.74 MPa | 0.51 MPa | 0.26 MPa |
After record finished, calculating the pumping performance value that can get first kind grease according to the pumping performance computing formula was 0.493 * 10
6Pa/m.
Repeat above-mentioned steps 6 times, obtain 6 first kind grease pumping characteristic values, it is averaged, and record.
Then second kind grease and third kind of grease are tested according to above-mentioned steps respectively, and record data.
Pumping performance value to the first and second the third three kinds of greases compares at last, and the minimum grease pumping performance of pumping eigenwert is best.
Claims (3)
1. a shield machine shield tail seal grease pumping performance proving installation is characterized in that, comprises grease pump (1), diaphragm (2) and pumping pipeline (3); One end of said pumping pipeline (3) is connected with the outlet of grease pump (1), its other end opening; Said diaphragm (2) is communicated with pumping pipeline (3) sidepiece.
2. shield machine shield tail seal grease pumping performance proving installation according to claim 1 is characterized in that the quantity of said diaphragm (2) is more than 4.
3. one kind is utilized the described shield machine shield tail seal grease of claim 1 pumping performance proving installation to carry out the method that the tail seal grease of shield pumping performance is tested, and it is characterized in that its method step is following:
(1) in grease pump, fills with tail seal grease of shield;
(2) open grease pump, make its speed with 20ml/s carry out greasing to the pumping pipeline, the grease injection pressure flows out until the mouth of pipe of tail seal grease of shield from the pumping pipeline less than 2.5MPa;
(3) when tail seal grease of shield when the mouth of pipe of pumping pipeline steadily flows out, close grease pump, stop greasing, when the mouth of pipe of pumping pipeline no longer flows out grease, write down the measured force value of each diaphragm;
The quantity of (4) establishing diaphragm is n, and wherein n is the positive integer more than or equal to 4; Diaphragm is respectively A by numbering from the near to the remote apart from grease pump
1, A
2... A
n, the force value of corresponding each diaphragm is respectively P
1, P
2... P
n, establish diaphragm A
1And A
2Between distance be L
1, diaphragm A
2And A
3Between distance be L
2, and the like, diaphragm A
nWith the distance of the pumping pipeline mouth of pipe be L
n, according to the pumping performance formula, the pumping performance that can get tail seal grease of shield to be detected is:
(5) repeating step (2) to step is (4) 6 times; Obtain 6
values; Then said 6
values are averaged, can obtain the pumping performance value of this kind tail seal grease of shield;
(6) respectively different types of tail seal grease of shield is carried out above-mentioned test, obtain its corresponding pumping performance value respectively;
(7) the pumping performance value to different types of tail seal grease of shield compares, and the pumping performance value is more little, and pumping is good more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210059676.9A CN102590481B (en) | 2012-03-08 | 2012-03-08 | Method for testing shield tail sealing oil pumping characteristic of shield tunneling machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210059676.9A CN102590481B (en) | 2012-03-08 | 2012-03-08 | Method for testing shield tail sealing oil pumping characteristic of shield tunneling machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102590481A true CN102590481A (en) | 2012-07-18 |
| CN102590481B CN102590481B (en) | 2014-01-22 |
Family
ID=46479411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210059676.9A Expired - Fee Related CN102590481B (en) | 2012-03-08 | 2012-03-08 | Method for testing shield tail sealing oil pumping characteristic of shield tunneling machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102590481B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514371A (en) * | 2019-09-05 | 2019-11-29 | 中铁工程装备集团有限公司 | Shield machine shield tail seal chamber based on ceramic pressure sensing and two lines bus monitors system |
| CN111811799A (en) * | 2020-06-30 | 2020-10-23 | 上海隧道工程有限公司 | Grease metering device for shield tail brush and grease metering method thereof |
| CN114856986A (en) * | 2022-03-30 | 2022-08-05 | 中昊(大连)化工研究设计院有限公司 | Method for testing pumping performance of shield tail sealing grease |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009074318A (en) * | 2007-09-21 | 2009-04-09 | Kajima Corp | Tail seal washing method and device for shield machine |
| CN201368314Y (en) * | 2008-12-25 | 2009-12-23 | 宏润建设集团股份有限公司 | Shield tail grease pump |
| CN201606643U (en) * | 2009-10-29 | 2010-10-13 | 上海铁道学院工厂 | Pneumatic control device of tail grease pump of shield machine |
| CN202001023U (en) * | 2011-04-07 | 2011-10-05 | 中铁十一局集团城市轨道工程有限公司 | Improved shield machine grouting pipeline system |
-
2012
- 2012-03-08 CN CN201210059676.9A patent/CN102590481B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009074318A (en) * | 2007-09-21 | 2009-04-09 | Kajima Corp | Tail seal washing method and device for shield machine |
| CN201368314Y (en) * | 2008-12-25 | 2009-12-23 | 宏润建设集团股份有限公司 | Shield tail grease pump |
| CN201606643U (en) * | 2009-10-29 | 2010-10-13 | 上海铁道学院工厂 | Pneumatic control device of tail grease pump of shield machine |
| CN202001023U (en) * | 2011-04-07 | 2011-10-05 | 中铁十一局集团城市轨道工程有限公司 | Improved shield machine grouting pipeline system |
Non-Patent Citations (2)
| Title |
|---|
| 严振林等: "盾尾密封油脂性能评价方法研究", 《石家庄铁道大学学报（自然科学版）》, vol. 23, no. 4, 31 December 2010 (2010-12-31), pages 91 - 94 * |
| 刘二召: "盾尾密封油脂注入系统浅析", 《隧道建设》, vol. 23, no. 1, 28 February 2003 (2003-02-28), pages 16 - 18 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110514371A (en) * | 2019-09-05 | 2019-11-29 | 中铁工程装备集团有限公司 | Shield machine shield tail seal chamber based on ceramic pressure sensing and two lines bus monitors system |
| CN110514371B (en) * | 2019-09-05 | 2021-05-04 | 中铁工程装备集团有限公司 | Shield machine shield tail seal cavity monitoring system based on ceramic pressure sensing and two buses |
| CN111811799A (en) * | 2020-06-30 | 2020-10-23 | 上海隧道工程有限公司 | Grease metering device for shield tail brush and grease metering method thereof |
| CN114856986A (en) * | 2022-03-30 | 2022-08-05 | 中昊(大连)化工研究设计院有限公司 | Method for testing pumping performance of shield tail sealing grease |
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| Publication number | Publication date |
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| CN102590481B (en) | 2014-01-22 |
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Granted publication date: 20140122 Termination date: 20210308 |