CN106436786B - A kind of experimental rig of control barrel-shaped foundation sinking negative pressure - Google Patents
A kind of experimental rig of control barrel-shaped foundation sinking negative pressure Download PDFInfo
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- CN106436786B CN106436786B CN201610986680.8A CN201610986680A CN106436786B CN 106436786 B CN106436786 B CN 106436786B CN 201610986680 A CN201610986680 A CN 201610986680A CN 106436786 B CN106436786 B CN 106436786B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D23/00—Caissons; Construction or placing of caissons
- E02D23/08—Lowering or sinking caissons
- E02D23/10—Caissons filled with compressed air
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2250/00—Production methods
- E02D2250/0053—Production methods using suction or vacuum techniques
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
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- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
The present invention discloses a kind of negative pressure control apparatus and its application method for barrel-shaped foundation sinking, including vacuum pump, subatmospheric storage tank and control system, device is the negative pressure measured by electric contact vacuum meter in bucket foundation, and decide whether to open vacuum pump in conjunction with setting value, so as to ensure the stabilization of bucket foundation internal negative pressure in long-time, stablize negative pressure by controlling the switch of vacuum pump, the volume of subatmospheric storage tank can suitably be reduced, smaller subatmospheric storage tank can also carry out fairly large bucket foundation negative pressure sinking test.The present invention has many advantages, such as automation control that is simple in structure, saving space, can provide stable negative pressure for a long time, realize negative pressure.
Description
Technical field
The present invention relates to a kind of experimental rigs of ocean engineering, more particularly to negative pressure during a kind of barrel-shaped foundation sinking
The experimental rig and its application method automatically controlled.
Background technology
Mankind's in the 21st century, energy crisis becomes increasingly conspicuous, and wind energy on the sea becomes as a kind of reproducible clean energy resource
Alleviate the new direction of global energy anxiety situation.Bucket foundation is as a kind of novel offshore platform foundation form, substantially
A kind of plectane basis with skirtboard reduces quantities since it has, reduces investment outlay, shortens construction time, reusable etc.
Advantage is just gradually applied in the foundation engineering of offshore wind farm.Bucket foundation relies primarily on inside and outside differential pressure (negative pressure) and realizes sinking
In place, it is that it is different from the outstanding feature of traditional infrastructure, and realizes the premise of engineer application.As a kind of novel installation side
Formula, the applicating history that bucket foundation negative pressure sinks at home and abroad is shorter, and engineering experience is not abundant enough, therefore is badly in need of carrying out model examination
It tests, to instruct the theoretical research of bucket foundation.For bucket foundation in sinking watching, negative pressure not only provides injection pressure, Er Qiehui
Cause seepage flow, on the one hand seepage flow can reduce penetration resistance, the size for applying negative pressure on the other hand can also be limited, because negative pressure is excessive
Soil body penetration can be caused to destroy, influence the use of bucket foundation, so needing to study barrel-shaped foundation sinking mistake in model test
Apply the zone of reasonableness of negative pressure in journey；Simultaneously to gain more insight into the sinking watching of bucket foundation, need to negative pressure and sinking
Soil pressure inside and outside depth, barrel, the relationship inside and outside barrel between pore water pressure, cylinder end resistance are studied.
Existing negative pressure cylinder sinking test equipment only includes vacuum pump and vacuum tank, and the mode for adjusting negative pressure is adjusted using artificial
Valve is saved to pump with closing vacuum.Such experimental rig closes the valve between vacuum tank and bucket foundation before on-test,
The air inside vacuum tank is emptied using vacuum pump, manufactures vacuum environment；It, will be between vacuum pump and vacuum tank after on-test
Valve close, open the valve between vacuum tank and bucket foundation, it is metastable negative in bucket foundation internal invention with this
Pressure ring border, during the test, the vacuum magnitude inside bucket foundation is adjusted by valve.
Common negative pressure test device only relies on manual control switch's valve to control vacuum magnitude, therefore inside bucket foundation
Negative pressure is not accurate enough, and at the same time, the negative pressure inside bucket foundation can gradually be discharged with the time, when the prolonged model of progress
When experiment, negative pressure must can decrease, and also can bring error to test result.
Invention content
The present invention overcomes the deficiencies in the prior art, a kind of negative pressure test device for barrel-shaped foundation sinking is provided (i.e.
Control device) and its application method, it can during the test be carried according to the vacuum magnitude in setting automatic adjustment bucket foundation
For stable subnormal ambient, solves and large-scale negative pressure is needed to adjust tank to store negative pressure, negative pressure when carrying out the experiment of negative pressure sinking
The instability problem caused by slow release during long-time is tested.
The technical scheme is that：
A kind of experimental rig of control barrel-shaped foundation sinking negative pressure, including vacuum pump 1；By subatmospheric storage tank cover 4, connection
Bolt 5, subatmospheric storage tank 6, subatmospheric storage tank vacuum meter 7, subatmospheric storage tank inlet adjustment valve 3 and the outlet of subatmospheric storage tank
The subatmospheric storage tank that regulating valve 8 forms；By standard vacuum meter 11, standard vacuum meter inlet adjustment valve 10, standard vacuum meter outlet
Regulating valve 12, control panel total valve 14, electric contact vacuum meter inlet adjustment valve 16, electric contact vacuum meter 17, electric contact vacuum
Table index combustion fan 18, vacuum tube inlet adjustment valve 20, vacuum tube 21, drain valve 22, vacuum tube index combustion fan 23, control plane
Plate 24, vacuum pump control cabinet 25, power supply indicator 26, vacuum pump switch 27, air switch 31, relay 33 and connecting terminal 35
The control system of composition.The connection structure of system is：Vacuum pump 1 passes through connecting line I 2 and connection circuit II 29 and negative pressure respectively
Holding vessel is connected with the vacuum pump control cabinet 25 of control system, and connecting line I 2 is equipped with negative close to one end of subatmospheric storage tank cover
Press holding vessel inlet adjustment valve 3, subatmospheric storage tank cover 4 is equipped with subatmospheric storage tank vacuum meter 7, subatmospheric storage tank cover 4 with
Subatmospheric storage tank 6 is flexibly connected by the connection bolt 5 at both ends, and subatmospheric storage tank is by connecting line II 9 and control
The standard vacuum meter 11 of system is connected, and connecting line II 9 is equipped with subatmospheric storage tank index combustion fan 8 close to subatmospheric storage tank one end,
It is equipped with standard vacuum meter inlet adjustment valve 10 close to one end of standard vacuum meter 11, standard vacuum meter 11 passes through connecting line III
13 connect with control panel total valve 14, and connecting line III 13 is being equipped with vacuum meter outlet tune close to one end of standard vacuum meter 11
Save valve 12, control panel total valve 14 is connected by connecting line IV 15 with electric contact vacuum meter 17, connecting line IV 15 by
One end of nearly electric contact vacuum meter 17 is equipped with electric contact vacuum meter inlet adjustment valve 16, and electric contact vacuum meter 17 passes through connecting line
V 19 are connected with vacuum tube 21, and connecting line V 19 is being equipped with electric contact vacuum meter outlet tune close to 17 one end of electric contact vacuum meter
Valve 18 is saved, is being equipped with vacuum tube inlet adjustment valve 20 close to 21 one end of vacuum tube, vacuum tube 21 passes through vacuum tube index combustion fan
23 are connected with external pipeline, and 21 lower section of vacuum tube is equipped with drain valve 22, and electric contact vacuum meter 17 is by connecting circuit I 28 and vacuum
It pumps control cabinet 25 to be connected, vacuum pump control cabinet 25 is equipped with power supply indicator 26 and vacuum pump switch 27, in vacuum pump control cabinet
In 25, external power supply by connect circuit III 30 be connected with air switch 31, air switch 31 by connect circuit IV 32 and
Relay 33 is connected, and relay 33 is connected by connecting circuit II 29 with vacuum pump 1, and electric contact vacuum meter 17 is by connecting electricity
Road I 28 is connected with connecting terminal 35, and connecting terminal 35 is connected by connecting circuit V 34 with relay 33.
In the above-mentioned technical solutions, the vacuum pump be sliding vane rotary vacuum pump, rotating speed be 1400 revs/min, pumping speed be 4 liters/
Second, rated power 0.55kW, end vacuum reaches 6 × 10-2Pa。
In the above-mentioned technical solutions, the subatmospheric storage tank cover is shell structure, and a diameter of 30-40cm is highly
3-5cm；Subatmospheric storage tank 6 is cylindrical structure, and a diameter of 30-40cm is highly 30-50cm.
In the above-mentioned technical solutions, the connecting line I 2, connecting line II 9, connecting line III 13, connecting line IV
15, connecting line V 19 is the plastic rigid pipe of caliber 4-8mm.
In the above-mentioned technical solutions, the subatmospheric storage tank inlet adjustment valve 3, subatmospheric storage tank index combustion fan 8, mark
Quasi- vacuum meter inlet adjustment valve 10, standard vacuum meter index combustion fan 12, electric contact vacuum meter inlet adjustment valve 16, electric contact are true
Empty table index combustion fan 18, vacuum tube inlet adjustment valve 20, vacuum tube index combustion fan 23 and drain valve 22 are ball valve.
In the above-mentioned technical solutions, the electric contact vacuum meter rated voltage is 220V, and contact power is 10W, range
Ranging from ﹣ 0.1MPa；The range ability of standard vacuum meter is 760mm mercury.
The application method of the present invention is as follows：
(1) whole piping connection is finished first, experiment bucket foundation model is connected with vacuum tube index combustion fan 23
It connects, the upper limit and lower limit of negative pressure value is set on electric contact vacuum meter, and it is true to open subatmospheric storage tank inlet adjustment valve 3, standard
Empty table entry regulating valve 10, standard vacuum meter index combustion fan 12, electric contact vacuum meter inlet adjustment valve 16, electric contact vacuum meter
Index combustion fan 18, vacuum tube inlet adjustment valve 20 and vacuum tube index combustion fan 23 close subatmospheric storage tank index combustion fan 8
With drain valve 22.
(2) vacuum pump switch 27, vacuum pump work are opened, the vacuum degree in subatmospheric storage tank gradually increases, and passes through negative pressure
Holding vessel vacuum meter 7 observes the vacuum degree in subatmospheric storage tank, when the vacuum degree in subatmospheric storage tank is negative slightly larger than test requirements document
After the lower limiting value of pressure, subatmospheric storage tank index combustion fan 8 is opened.
(3) negative pressure value at this time in experimental rig should be slightly bigger than the lower limit that negative pressure value is set on electric contact vacuum meter 17, very
Sky pump 1 is still in open state, and with the progress of experiment, negative pressure value is gradually increased, when negative pressure value is higher than the upper limit of setting value
Afterwards, electric contact vacuum meter 17 will close vacuum pump switch 27 by connecting circuit, and vacuum pump 1 is stopped, with bucket foundation
The increase of deflection and the growth of time, the negative pressure value inside experimental rig will be reduced slowly；When negative pressure value is less than setting value
Lower limit after, electric contact vacuum meter 17 will pass through connect circuit open vacuum pump switch 27, vacuum pump 1 start to work, improve examination
Vacuum degree inside experiment device achievees the purpose that automatic stabilisation experimental rig internal negative pressure with this reciprocation cycle.
It finds that negative pressure setting value is unsatisfactory for experimental condition during the test, needs to increase or decrease the negative of experimental rig
When pressure value, change the upper and lower bound of negative pressure value on electric contact vacuum meter 17, controlling vacuum pump by electric contact vacuum meter 17 opens
27 are closed, the whole negative pressure value inside experimental rig is increased or decreased, to achieve the purpose that change experiment negative pressure.
Compared with prior art, the beneficial effects of the invention are as follows：
(1) device is the negative pressure measured by electric contact vacuum meter in bucket foundation, and decides whether to open in conjunction with setting value
Vacuum pump, so as to ensure the stabilization of bucket foundation internal negative pressure in long-time.
(2) device stablizes negative pressure by controlling the switch of vacuum pump, can suitably reduce the volume of subatmospheric storage tank, compared with
Small subatmospheric storage tank can also carry out fairly large bucket foundation negative pressure sinking test.
Description of the drawings
Fig. 1 is the front view of experimental rig of the present invention；
Fig. 2 is the rearview of experimental rig of the present invention；
Fig. 3 is the vacuum pump control cabinet internal structure schematic diagram of the present invention；
Wherein, 1, vacuum pump；2, connecting line I；3, subatmospheric storage tank inlet adjustment valve；4, subatmospheric storage tank cover；5、
Connect bolt；6, subatmospheric storage tank；7, subatmospheric storage tank vacuum meter；8, subatmospheric storage tank index combustion fan；9, connecting tube
Road II；10, standard vacuum meter inlet adjustment valve；11, standard vacuum meter；12, standard vacuum meter index combustion fan；13, connecting tube
Road III；14, control panel total valve；15, connecting line IV；16, electric contact vacuum meter inlet adjustment valve；17, electric contact vacuum
Table；18, electric contact vacuum meter index combustion fan；19, connecting line V；20, vacuum tube inlet adjustment valve；21, vacuum tube；22、
Drain valve；23, vacuum tube index combustion fan；24, control panel；25, vacuum pump control cabinet；26, power supply indicator；27, vacuum
Switch pump；28, circuit I is connected；29, circuit II is connected；30, circuit III is connected；31, air switch；32, circuit IV is connected；33、
Relay；34, circuit V is connected；35, connecting terminal.
Specific implementation mode
The technical solution further illustrated the present invention with reference to specific embodiment.
A kind of experimental rig of control barrel-shaped foundation sinking negative pressure, including vacuum pump 1；By subatmospheric storage tank cover 4, connection
Bolt 5, subatmospheric storage tank 6, subatmospheric storage tank vacuum meter 7, subatmospheric storage tank inlet adjustment valve 3 and the outlet of subatmospheric storage tank
The subatmospheric storage tank that regulating valve 8 forms；By standard vacuum meter 11, standard vacuum meter inlet adjustment valve 10, standard vacuum meter outlet
Regulating valve 12, control panel total valve 14, electric contact vacuum meter inlet adjustment valve 16, electric contact vacuum meter 17, electric contact vacuum
Table index combustion fan 18, vacuum tube inlet adjustment valve 20, vacuum tube 21, drain valve 22, vacuum tube index combustion fan 23, control plane
Plate 24, vacuum pump control cabinet 25, power supply indicator 26, vacuum pump switch 27, air switch 31, relay 33 and connecting terminal 35
The control system of composition.The connection structure of system is：Vacuum pump 1 passes through connecting line I 2 and connection circuit II 29 and negative pressure respectively
Holding vessel is connected with the vacuum pump control cabinet 25 of control system, and connecting line I 2 is equipped with negative close to one end of subatmospheric storage tank cover
Press holding vessel inlet adjustment valve 3, subatmospheric storage tank cover 4 is equipped with subatmospheric storage tank vacuum meter 7, subatmospheric storage tank cover 4 with
Subatmospheric storage tank 6 is flexibly connected by the connection bolt 5 at both ends, and subatmospheric storage tank is by connecting line II 9 and control
The standard vacuum meter 11 of system is connected, and connecting line II 9 is equipped with subatmospheric storage tank index combustion fan 8 close to subatmospheric storage tank one end,
It is equipped with standard vacuum meter inlet adjustment valve 10 close to one end of standard vacuum meter 11, standard vacuum meter 11 passes through connecting line III
13 connect with control panel total valve 14, and connecting line III 13 is being equipped with vacuum meter outlet tune close to one end of standard vacuum meter 11
Save valve 12, control panel total valve 14 is connected by connecting line IV 15 with electric contact vacuum meter 17, connecting line IV 15 by
One end of nearly electric contact vacuum meter 17 is equipped with electric contact vacuum meter inlet adjustment valve 16, and electric contact vacuum meter 17 passes through connecting line
V 19 are connected with vacuum tube 21, and connecting line V 19 is being equipped with electric contact vacuum meter outlet tune close to 17 one end of electric contact vacuum meter
Valve 18 is saved, is being equipped with vacuum tube inlet adjustment valve 20 close to 21 one end of vacuum tube, vacuum tube 21 passes through vacuum tube index combustion fan
23 are connected with external pipeline, and 21 lower section of vacuum tube is equipped with drain valve 22, and electric contact vacuum meter 17 is by connecting circuit I 28 and vacuum
It pumps control cabinet 25 to be connected, vacuum pump control cabinet 25 is equipped with power supply indicator 26 and vacuum pump switch 27, in vacuum pump control cabinet
In 25, external power supply by connect circuit III 30 be connected with air switch 31, air switch 31 by connect circuit IV 32 and
Relay 33 is connected, and relay 33 is connected by connecting circuit II 29 with vacuum pump 1, and electric contact vacuum meter 17 is by connecting electricity
Road I 28 is connected with connecting terminal 35, and connecting terminal 35 is connected by connecting circuit V 34 with relay 33, electric contact vacuum
Table 17 starts or stops vacuum pump 1 by controlling relay 33.
Above-mentioned vacuum pump is sliding vane rotary vacuum pump, and rotating speed is 1400 revs/min, and pumping speed is 4 liters/second, and rated power is
0.55kW, end vacuum reach 6 × 10-2Pa。
Above-mentioned subatmospheric storage tank cover is shell structure, and a diameter of 35cm is highly 4cm；Subatmospheric storage tank tube body 6 is
Cylindrical structure, a diameter of 35cm are highly 34cm.
Above-mentioned connecting line I 2, connecting line II 9, connecting line III 13, connecting line IV 15, connecting line V 19
It is the plastic rigid pipe of caliber 6mm.
Above-mentioned subatmospheric storage tank inlet adjustment valve 3, subatmospheric storage tank index combustion fan 8, vacuum meter inlet adjustment valve 10,
Vacuum meter index combustion fan 12, electric contact vacuum meter inlet adjustment valve 16, electric contact vacuum meter index combustion fan 18, vacuum tube enter
Mouth regulating valve 20, vacuum tube index combustion fan 23 and drain valve 22 are ball valve.
Above-mentioned electric contact vacuum meter rated voltage is 220V, and contact power is 10W, and range ability is -0.1MPa.Standard
The range ability of vacuum meter is 760mm mercury.
The application method of the present invention is as follows：
(1) whole piping connection is finished first, experiment bucket foundation model is connected with vacuum tube index combustion fan 23
It connects, the upper limit and lower limit of negative pressure value is set on electric contact vacuum meter, and it is true to open subatmospheric storage tank inlet adjustment valve 3, standard
Empty table entry regulating valve 10, standard vacuum meter index combustion fan 12, electric contact vacuum meter inlet adjustment valve 16, electric contact vacuum meter
Index combustion fan 18, vacuum tube inlet adjustment valve 20 and vacuum tube index combustion fan 23 close subatmospheric storage tank index combustion fan 8
With drain valve 22.
(2) vacuum pump switch 27, vacuum pump work are opened, the vacuum degree in subatmospheric storage tank gradually increases, and passes through negative pressure
Holding vessel vacuum meter 7 observes the vacuum degree in subatmospheric storage tank, when the vacuum degree in subatmospheric storage tank is negative slightly larger than test requirements document
After the lower limiting value of pressure, subatmospheric storage tank index combustion fan 8 is opened.
(3) negative pressure value at this time in experimental rig should be slightly bigger than the lower limit that negative pressure value is set on electric contact vacuum meter 17, very
Sky pump 1 is still in open state, and with the progress of experiment, negative pressure value is gradually increased, when negative pressure value is higher than the upper limit of setting value
Afterwards, electric contact vacuum meter 17 will close vacuum pump switch 27 by connecting circuit, and vacuum pump 1 is stopped, with bucket foundation
The increase of deflection and the growth of time, the negative pressure value inside experimental rig will be reduced slowly；When negative pressure value is less than setting value
Lower limit after, electric contact vacuum meter 17 will pass through connect circuit open vacuum pump switch 27, vacuum pump 1 start to work, improve examination
Vacuum degree inside experiment device achievees the purpose that automatic stabilisation experimental rig internal negative pressure with this reciprocation cycle.
It finds that negative pressure setting value is unsatisfactory for experimental condition during the test, needs to increase or decrease the negative of experimental rig
When pressure value, change the upper and lower bound of negative pressure value on electric contact vacuum meter 17, controlling vacuum pump by electric contact vacuum meter 17 opens
27 are closed, the whole negative pressure value inside experimental rig is increased or decreased, to achieve the purpose that change experiment negative pressure.
The vacuum pump of the present invention is connected by connecting line with subatmospheric storage tank, and subatmospheric storage tank expands single unit system
Volume, make negative pressure relatively stablize, significant change will not be generated in a short time.Subatmospheric storage tank passes through connecting line and control
Panel is attached, and the electric contact vacuum meter in control panel can be implemented to measure the negative pressure value in connecting line, work as negative pressure value
After setting value, electric contact vacuum meter will open vacuum pump switch by connecting circuit, and vacuum pump is started to work, and experiment is improved
Vacuum degree inside device；After negative pressure value is higher than setting value, vacuum pump is stopped, with the increase of barrel-shaped foundation sinking amount
With the growth of time, the vacuum degree inside experimental rig will be reduced slowly, reach negative inside experimental rig with this reciprocation cycle
Pressure automatically controls.
Illustrative description has been done to the present invention above, it should explanation, the case where not departing from core of the invention
Under, any simple deformation, modification or other skilled in the art can not spend the equivalent replacement of creative work equal
Fall into protection scope of the present invention.
Claims (6)
1. a kind of experimental rig of control barrel-shaped foundation sinking negative pressure, which is characterized in that including vacuum pump；By subatmospheric storage tank tank
Lid, connection bolt, subatmospheric storage tank, subatmospheric storage tank vacuum meter, subatmospheric storage tank inlet adjustment valve and subatmospheric storage tank
The subatmospheric storage tank of index combustion fan composition；It is adjusted by standard vacuum meter, standard vacuum meter inlet adjustment valve, standard vacuum meter outlet
Save valve, control panel total valve, electric contact vacuum meter inlet adjustment valve, electric contact vacuum meter, electric contact vacuum meter outlet regulating
Valve, vacuum tube inlet adjustment valve, vacuum tube, drain valve, vacuum tube index combustion fan, control panel, vacuum pump control cabinet, power supply
Indicator light, vacuum pump switch, air switch, relay and the molecular control system of terminals；The vacuum pump passes through respectively
Connecting line I and connection circuit II are connected with the vacuum pump control cabinet of subatmospheric storage tank and control system, and connecting line is close to negative
One end of holding vessel cover is pressed to be equipped with subatmospheric storage tank inlet adjustment valve, subatmospheric storage tank cover is equipped with subatmospheric storage tank vacuum
Table, subatmospheric storage tank cover are flexibly connected with subatmospheric storage tank by the connection bolt at both ends, and subatmospheric storage tank passes through company
It takes over road II with the standard vacuum meter of control system to be connected, connecting line II is equipped with subatmospheric storage tank close to subatmospheric storage tank one end
Index combustion fan is equipped with standard vacuum meter inlet adjustment valve close to one end of standard vacuum meter, and standard vacuum meter passes through connecting tube
Road III is connect with control panel total valve, and connecting line III is being equipped with vacuum meter outlet regulating close to one end of standard vacuum meter
Valve, control panel total valve are connected by connecting line IV with electric contact vacuum meter, and connecting line IV is close to electric contact vacuum
One end of table is equipped with electric contact vacuum meter inlet adjustment valve, and electric contact vacuum meter is connected by connecting line V with vacuum tube, even
It takes over road V and is being equipped with electric contact vacuum meter index combustion fan close to electric contact vacuum meter one end, be equipped with close to vacuum tube one end
Vacuum tube inlet adjustment valve, vacuum tube are connected by vacuum tube index combustion fan with external pipeline, and draining is equipped with below vacuum tube
Valve, electric contact vacuum meter by connect circuit I be connected with vacuum pump control cabinet, vacuum pump control cabinet equipped with power supply indicator with
Vacuum pump switch, in vacuum pump control cabinet, external power supply is connected by connecting circuit III with air switch, and air switch is logical
It crosses connection circuit III with relay to be connected, relay is connected by connecting circuit II with vacuum pump, and electric contact vacuum meter passes through
Connection circuit I is connected with connecting terminal, and connecting terminal is connected by connecting circuit V with relay.
2. experimental rig according to claim 1, which is characterized in that the vacuum pump is sliding vane rotary vacuum pump, and rotating speed is
1400 revs/min, pumping speed is 4 liters/second, and rated power 0.55kW, end vacuum reaches 6 × 10-2Pa。
3. experimental rig according to claim 1, which is characterized in that the subatmospheric storage tank cover is shell structure,
A diameter of 30-40cm is highly 3-5cm；Subatmospheric storage tank is cylindrical structure, and a diameter of 30-40cm is highly 30-
50cm。
4. experimental rig according to claim 1, which is characterized in that the connecting line I, connecting line II, connection
Pipeline III, connecting line IV, connecting line V are the plastic rigid pipe of caliber 4-8mm.
5. experimental rig according to claim 1, which is characterized in that the subatmospheric storage tank inlet adjustment valve, negative pressure
Holding vessel index combustion fan, standard vacuum meter inlet adjustment valve, standard vacuum meter index combustion fan, electric contact vacuum table entry tune
It is ball to save valve, electric contact vacuum meter index combustion fan, vacuum tube inlet adjustment valve, vacuum tube index combustion fan and drain valve
Valve.
6. experimental rig according to claim 1, which is characterized in that the electric contact vacuum meter rated voltage is
220V, contact power are 10W, and range ability is ﹣ 0.1MPa；The range ability of standard vacuum meter is 760mm mercury.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810092153.1A CN108457310B (en) | 2016-10-26 | 2016-11-09 | The application method of negative pressure control apparatus for barrel-shaped foundation sinking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610948206 | 2016-10-26 | ||
| CN2016109482066 | 2016-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810092153.1A Division CN108457310B (en) | 2016-10-26 | 2016-11-09 | The application method of negative pressure control apparatus for barrel-shaped foundation sinking |
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| Publication Number | Publication Date |
|---|---|
| CN106436786A CN106436786A (en) | 2017-02-22 |
| CN106436786B true CN106436786B (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621223229.2U Withdrawn - After Issue CN206174012U (en) | 2016-10-26 | 2016-11-09 | Be used for submerged negative -pressure control device of bucket foundation |
| CN201610986680.8A Active CN106436786B (en) | 2016-10-26 | 2016-11-09 | A kind of experimental rig of control barrel-shaped foundation sinking negative pressure |
| CN201810092153.1A Active CN108457310B (en) | 2016-10-26 | 2016-11-09 | The application method of negative pressure control apparatus for barrel-shaped foundation sinking |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621223229.2U Withdrawn - After Issue CN206174012U (en) | 2016-10-26 | 2016-11-09 | Be used for submerged negative -pressure control device of bucket foundation |
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| CN201810092153.1A Active CN108457310B (en) | 2016-10-26 | 2016-11-09 | The application method of negative pressure control apparatus for barrel-shaped foundation sinking |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN206174012U (en) * | 2016-10-26 | 2017-05-17 | 天津大学 | Be used for submerged negative -pressure control device of bucket foundation |
| CN108761044B (en) * | 2018-08-13 | 2023-06-20 | 重庆科技学院 | Test device and method for microorganism-induced calcium carbonate precipitation solidification sand under negative pressure environment |
| CN110397093A (en) * | 2019-07-08 | 2019-11-01 | 天津大学 | A kind of negative pressure control apparatus and its application method of adjustable bucket foundation sinking rate |
| CN115030238A (en) * | 2022-06-13 | 2022-09-09 | 中交上海港湾工程设计研究院有限公司 | Vacuum preloading loading test device and method |
| CN116679768B (en) * | 2023-07-26 | 2023-10-31 | 江苏道达风电设备科技有限公司 | Method and related device for controlling negative pressure in offshore cylindrical foundation cylinder |
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| CN103195110B (en) * | 2013-03-29 | 2015-02-11 | 天津大学 | Stable bucket-shaped foundation sinking negative pressure testing device |
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- 2016-11-09 CN CN201621223229.2U patent/CN206174012U/en not_active Withdrawn - After Issue
- 2016-11-09 CN CN201610986680.8A patent/CN106436786B/en active Active
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Also Published As
| Publication number | Publication date |
|---|---|
| CN108457310A (en) | 2018-08-28 |
| CN206174012U (en) | 2017-05-17 |
| CN106436786A (en) | 2017-02-22 |
| CN108457310B (en) | 2019-10-11 |
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