CN206707991U - A kind of adjustable superhigh pressure water jet device - Google Patents
A kind of adjustable superhigh pressure water jet device Download PDFInfo
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- CN206707991U CN206707991U CN201720178361.4U CN201720178361U CN206707991U CN 206707991 U CN206707991 U CN 206707991U CN 201720178361 U CN201720178361 U CN 201720178361U CN 206707991 U CN206707991 U CN 206707991U
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Abstract
A kind of adjustable superhigh pressure water jet device, super-pressure bath in rake teeth working angles can be provided, and hard soil is precut when rake teeth cuts flint clay, can effectively solve the problems such as original high-pressure flush equipment jet pressure is low, jet pressure is uncontrollable, the efficiency of rake teeth cutting hard soil is greatly improved, and support is provided to correlation tests such as later stage research superhigh pressure water jet cutting hard soil mechanism.Including electric control box, motor, shaft coupling, high-pressure plunger pump, import security valve, water feed apparatus, filter, sewage draining exit, digital display manometer, outlet pipeline, some water solenoid valves, boom jet nozzle, wherein:Described electric control box is connected with described frequency converter, motor, high-pressure plunger pump, import security valve, water solenoid valve respectively by connecting line；The motor is used to drive high-pressure plunger pump by shaft coupling, and the rotating of motor and rotating speed determine the hydraulic pressure size of reciprocating linear displacement and the output of driving high-pressure plunger pump.Deng.
Description
Technical field
It the utility model is related to a kind of adjustable superhigh pressure water jet device.
Background technology
High Pressure Water Jet Cutting Technology is an importance of water-jet technology application, and having in many engineering fields should
With.Research to high-pressure water jet cutting hard soil, due to soil property dynamic change, water jets impact load change and fluid and
The superposition of many complex relationships such as the soil effect of intercoupling so that related theoretic discussion and the increase of experimental study difficulty, lead
Cause high-pressure water jet cutting hard soil in mechanism and real physical process fail accurately to be disclosed, this is largely
On have impact on development and application of the high-pressure water jet in terms of soil cutting technology.
Dredge in industry, self-propulsion type trailing suction hopper dredger is the main flow ship type of major port waterway dredging, and the rake of modernization is inhaled
Dredger mainly carries out machine cut by the rake teeth installed in drag head bottom, is aided with high-pressure flush, to ensure larger dredging
Depth and the amount of breaking ground, then suck spoil hopper by dredge pump.But the high-pressure jet pressure that domestic rake suction ship generally uses at present is only
1-2MPa (10kg), may be only available for loose soil property, when feelings such as the cohesive soils, hard soil, knotts clay for running into smaller infiltration coefficient
During condition, because the shear strength of soil property is high, the effect of high-pressure jet is substantially reduced, and causes cutting depth deficiency and the resistance of rake teeth
Power increase, dredging efficiency are low.Meanwhile bulk is broken into during the excavation of batt, decomposed rock, it is easily blocking to block drag head and mud
Pump.
The technological progress of external large-scale dredging company is quite rapid, and many new technologies, new equipment, new technology are constantly gushed
It is existing, wherein world dredging company of most typical DEME groups is dredging flint clay self-developing Dracula (Dredging
Assisted Cutting by Liquid Action) system, the maximum of the assisted jet technology of drag head is not only penetrated by the said firm
Flowing pressure has brought up to more than 35MPa so that the output increased 20%-30% of flint clay is dredged, but also should by this technology
Use and twist on the reamer tooth for inhaling ship, for aiding in destroying in the construction technology of hard ground, wherein highest jet pressure reaches
60MPa.The soil property that gravel is pressed from both sides for dredging clay in Dutch Boskalis companies specially have developed with powerful high-pressure flush system
Special drag head.The efficiency that drag head is constructed under hard soil working condition greatly improved in these developmental achievements, creates huge
Economic benefit.
Due to by construction technology and the jejune limitation of correlation theory research, in domestic related ship work progress
Jet pressure is relatively low.Particularly in drag head moving process, the change of jet characteristics reduces the efficiency of its effect, but therein
Mechanism is unclear, therefore need to be to superhigh pressure water jet technology, and theoretical in terms of high-pressure water jet particularly on the move carries out phase
The research of pass.Because the influence factor of high-pressure water jet auxiliary rock is more, and Water Jet Impact process is complex, therefore
Stress distribution under water jets impact in medium fails to be revealed always, and this governs water-jet technology in industry is dredged always
Deep development.
Utility model content
The utility model device is applied to superhigh pressure water jet, refers generally to high-pressure flush of the operating pressure in more than 10MPa.It is super
Its main function of high-pressure jet is cutting, and suitable for construction environments such as hard soil, decomposed rocks, hard ground is under Water Jet Impact
Destruction and broken form it is extremely complex.
The utility model gives a kind of adjustable superhigh pressure water jet device, and matching enters extra high voltage system, and system needs to adopt
With volume pump (plunger pump etc.), such small lift of pump discharge is big, but also has to influent quality, pressure duct and nozzle etc. higher
Requirement.
After the utility model is implemented, using the teaching of the invention it is possible to provide the super-pressure bath in rake teeth working angles, and cut hard in rake teeth
Hard soil is precut during clay, can effectively solve that original high-pressure flush equipment jet pressure is low, jet pressure is uncontrollable
Etc. problems, the efficiency of rake teeth cutting hard soil is greatly improved, and hard soil machine is cut to later stage research superhigh pressure water jet
The correlation tests such as reason provide support.
Technical solutions of the utility model：
A kind of adjustable superhigh pressure water jet device, it is characterised in that including electric control box 1, motor 3, shaft coupling 4, height
It is hydraulic plunger pump 5, import security valve 6, water feed apparatus 7, filter 8, sewage draining exit 9, digital display manometer 10, outlet pipeline 11, some
Water solenoid valve 12, boom jet nozzle 13, wherein:
Described electric control box 1 by connecting line respectively with described frequency converter, motor 3, high-pressure plunger pump 5, enter
Mouth safety valve 6, water solenoid valve 12 connect；
The motor 3 is used to drive high-pressure plunger pump 5 by shaft coupling 4, and the rotating of motor 3 and rotating speed determine to drive
The hydraulic pressure size of reciprocating linear displacement and the output of dynamic high-pressure plunger pump 5；
The driving high-pressure plunger pump 5 includes plunger and cylinder body, and cylinder body is divided into two parts up and down by plunger, cylinder body top
Entrance is connected with the water feed apparatus 7, is used for the break-make for controlling water inlet provided with import security valve 6 between the two；Under the cylinder body
Portion is connected with the sewage draining exit 9, and the dirt being used between the two provided with filter 8 in filtered water inlet is simultaneously discharged by sewage draining exit 9；
High-pressure water caused by plunger pump is transferred to each by the outlet at bottom of the inferior part of the cylinder block by outlet pipeline 11
Boom jet nozzle 13, the main pipe rail of outlet pipeline 11 are provided with digital display manometer 10 and are used to observe the pressure in outlet pipeline, water outlet
Be respectively provided with some branch lines of pipeline 11 water solenoid valve 12 be used for control be attached thereto the break-make of each boom jet nozzle 13；
Include frequency converter and switch board circuit system in electric control box 1, be provided with and become between power input and motor
Frequency device；Electric control box (1) is connected by connecting line with frequency converter；The switch board circuit system include battery main switch QF2,
Emergency stop switch SB1, switch TA1, draught fan control circuit 14, in addition to some branch roads, it is respectively：Power supply instruction circuit for lamp, plunger
Pump control circuit 16, frequency converter signal circuit 17, the first water solenoid valve control circuit 18, the second water solenoid valve control circuit
19th, the 3rd water solenoid valve control circuit 20,
Parallel relationship is formed between each branch road at nodes X, node Y respectively；
One end of the draught fan control circuit 14 is connected with node Y, and its other end passes sequentially through the switch TA1 of concatenation, urgency
Nodes X is then connected to after guard's valve SB1；
The battery main switch QF2 is bordered by mains side input, is the master switch of whole switch board circuit system；
Concatenated between the emergency stop switch SB1, switch TA1, this two switches control the break-make of each branch road simultaneously；
The plunger pump control circuit 16 controls the start and stop of plunger pumping unit, including power switch SB2, power switch SB3,
Two switch KA1, indicator lamp, ballast formula sensing switch SP, described two switch KA1 are respectively designated as according to position relationship
Upper switch KA1, lower switch KA1, the power switch SB2, power switch SB3, lower switch KA1, ballast formula sensing switch SP
It is sequentially connected in series, is connected between the power switch SB2, power switch SB3 by node A, the lower switch KA1 passes with ballast formula
Connected by node B between sensor switch SP, concatenated between the upper switch KA1, indicator lamp by node C.
The start and stop of first water solenoid valve of the control of first water solenoid valve control circuit 18, including power switch SB4,
Power switch SB5, two switch KA2, indicator lamps, described two switch KA1 are respectively designated as upper switch according to position relationship
KA2, lower switch KA2, the power switch SB4, power switch SB5, lower switch KA2 are sequentially connected in series, the power switch SB4,
Power switch SB5, lower switch KA2 pass sequentially through node A1, node B1 connections, through celebrating a festival between the upper switch KA2, indicator lamp
Point C1 is concatenated.
The start and stop of second water solenoid valve of the control of second water solenoid valve control circuit 19, including power switch SB6,
Power switch SB7, two switch KA3, indicator lamps, described two switch KA3 are respectively designated as upper switch according to position relationship
KA3, lower switch KA3, the power switch SB6, power switch SB7, lower switch KA3 are sequentially connected in series, the power switch SB6,
Power switch SB7, lower switch KA3 pass sequentially through node A2, node B2 connections, through celebrating a festival between the upper switch KA3, indicator lamp
Point C2 is concatenated.
The start and stop of the 3rd water solenoid valve of 3rd water solenoid valve control circuit 20 control, including power switch SB8,
Power switch SB9, two switch KA4, indicator lamps, described two switch KA4 are respectively designated as upper switch according to position relationship
KA4, lower switch KA4, the power switch SB8, power switch SB9, lower switch KA4 are sequentially connected in series, the power switch SB8,
Power switch SB9, lower switch KA4 pass sequentially through node A3, node B3 connections, through celebrating a festival between the upper switch KA4, indicator lamp
Point C3 is concatenated.
The utility model provides energy by motor to plunger pump, so as to provide super high pressure fluid.High-pressure plunger pump is
Ceramic plunger pump, it is the equipment for producing high-pressure water.Sewage draining exit is the delivery port that the impurity for filtering out filtration system excludes.Spray
Bar and nozzle, it is prior art, spray boom is the visual plant for connecting ultrahigh pressure pipeline and nozzle, and nozzle is to produce high-speed liquid
Critical elements, be superhigh pressure water jet device part.Water feed apparatus, for providing water source to plunger pump, by water inlet pipe
Formed with water filtering system is entered, water inlet pipe directly can be connected with cleaning water source, and entering water filtering system has double-filtration work(
Can, first, preventing impurity from entering plunger pump, high-precision plunger pump is caused to damage, second, after preventing impurity from entering outlet pipe,
Cause the blocking of superhigh pressure water jet nozzle.Electric control box is made up of control button and frequency conversion equipment.Frequency converter regulation button can
To adjust motor speed, each road discharge pressure is adjusted.The general control system of whole superhigh pressure water jet device is in electric control box
On, after switching on power, change motor speed by adjusting frequency converter regulation button, so as to adjust each road discharge pressure.Electricity
There is jerk operation button, to prevent maloperation can emergent stopping on gas control cabinet.On electric control box guidance panel, also have
The adjusting switch of each branch road ultrahigh pressure pipeline, branch road can be adjusted respectively, so as to control it is single outlet or not
With superhigh pressure water jet during combination outlet.
Brief description of the drawings
Fig. 1 is the schematic diagram of the utility model ultra-high pressure water fluid jet device.
Fig. 2 is the circuit diagram of electric control box.
Numeral mark in figure：
Electric control box 1, connecting line 2, motor 3, shaft coupling 4, high-pressure plunger pump 5, import security valve 6, water feed apparatus
7, filter 8, sewage draining exit 9, digital display manometer 10, outlet pipeline 11, water solenoid valve 12, boom jet nozzle 13, air-blower control electricity
Road 14, power supply indicator 15, high-pressure plunger pump start and stop 16, the first water solenoid valve control circuit 18, the second water solenoid valve control
Circuit 19 processed, the 3rd water solenoid valve control circuit 20,
Embodiment
The utility model is described in further detail below in conjunction with the accompanying drawings.
A kind of adjustable superhigh pressure water jet device, as shown in figure 1, including electric control box 1, motor 3, shaft coupling 4, high pressure
If plunger pump 5, import security valve 6, water feed apparatus 7, filter 8, sewage draining exit 9, digital display manometer 10, outlet pipeline 11, do
Water solenoid valve 12, boom jet nozzle 13, wherein:
Described electric control box 1 is the control centre of whole device, and described electric control box 1 is distinguished by connecting line
It is connected with described frequency converter, motor 3, high-pressure plunger pump 5, import security valve 6, water solenoid valve 12；
The motor 3 is used to drive high-pressure plunger pump 5 by shaft coupling 4, and the rotating of motor 3 and rotating speed determine to drive
The hydraulic pressure size of reciprocating linear displacement and the output of dynamic high-pressure plunger pump 5；
The driving high-pressure plunger pump 5 includes plunger and cylinder body, and cylinder body is divided into two parts up and down by plunger, cylinder body top
Entrance is connected with the water feed apparatus 7, is used for the break-make for controlling water inlet provided with import security valve 6 between the two；Under the cylinder body
Portion is connected with the sewage draining exit 9, and the dirt being used between the two provided with filter 8 in filtered water inlet is simultaneously discharged by sewage draining exit 9；
High-pressure water caused by plunger pump is transferred to each by the outlet at bottom of the inferior part of the cylinder block by outlet pipeline 11
Boom jet nozzle 13, the main pipe rail of outlet pipeline 11 are provided with digital display manometer 10 and are used to observe the pressure in outlet pipeline, water outlet
Be respectively provided with some branch lines of pipeline 11 water solenoid valve 12 be used for control be attached thereto the break-make of each boom jet nozzle 13.
Include frequency converter and switch board circuit system (Fig. 2) in electric control box 1, set between power input and motor
There is frequency converter, the frequency converter is used for the rotating speed for controlling motor, so as to regulate and control the change of nozzle discharge pressure.
The switch board circuit system includes battery main switch QF2, emergency stop switch SB1, switch TA1, draught fan control circuit
14, in addition to some branch roads, it is respectively：Power supply instruction circuit for lamp, plunger pump control circuit 16, frequency converter signal circuit 17,
One water solenoid valve control circuit 18, the second water solenoid valve control circuit 19, the 3rd water solenoid valve control circuit 20,
Parallel relationship is formed between each branch road at nodes X, node Y respectively；
One end of the draught fan control circuit 14 is connected with node Y, and its other end passes sequentially through the switch TA1 of concatenation, urgency
Nodes X is then connected to after guard's valve SB1；
The battery main switch QF2 is bordered by mains side input, is the master switch of whole switch board circuit system；
Concatenated between the emergency stop switch SB1, switch TA1, this two switches control the break-make of each branch road simultaneously；
The plunger pump control circuit 16 controls the start and stop of plunger pumping unit, including power switch SB2, power switch SB3,
Two switch KA1, indicator lamp, ballast formula sensing switch SP, described two switch KA1 are respectively designated as according to position relationship
Upper switch KA1, lower switch KA1, the power switch SB2, power switch SB3, lower switch KA1, ballast formula sensing switch SP
It is sequentially connected in series, is connected between the power switch SB2, power switch SB3 by node A, the lower switch KA1 passes with ballast formula
Connected by node B between sensor switch SP, concatenated between the upper switch KA1, indicator lamp by node C.
The start and stop of first water solenoid valve of the control of first water solenoid valve control circuit 18, including power switch SB4,
Power switch SB5, two switch KA2, indicator lamps, described two switch KA1 are respectively designated as upper switch according to position relationship
KA2, lower switch KA2, the power switch SB4, power switch SB5, lower switch KA2 are sequentially connected in series, the power switch SB4,
Power switch SB5, lower switch KA2 pass sequentially through node A1, node B1 connections, through celebrating a festival between the upper switch KA2, indicator lamp
Point C1 is concatenated.
The start and stop of second water solenoid valve of the control of second water solenoid valve control circuit 19, including power switch SB6,
Power switch SB7, two switch KA3, indicator lamps, described two switch KA3 are respectively designated as upper switch according to position relationship
KA3, lower switch KA3, the power switch SB6, power switch SB7, lower switch KA3 are sequentially connected in series, the power switch SB6,
Power switch SB7, lower switch KA3 pass sequentially through node A2, node B2 connections, through celebrating a festival between the upper switch KA3, indicator lamp
Point C2 is concatenated.
The start and stop of the 3rd water solenoid valve of 3rd water solenoid valve control circuit 20 control, including power switch SB8,
Power switch SB9, two switch KA4, indicator lamps, described two switch KA4 are respectively designated as upper switch according to position relationship
KA4, lower switch KA4, the power switch SB8, power switch SB9, lower switch KA4 are sequentially connected in series, the power switch SB8,
Power switch SB9, lower switch KA4 pass sequentially through node A3, node B3 connections, through celebrating a festival between the upper switch KA4, indicator lamp
Point C3 is concatenated.
Use ultra-high pressure water fluid jet equipment:
Firstly the need of the oil level and viscosity checked above high-pressure plunger pump 5, it is determined whether addition or more oil change are needed,
Ensure that water inlet lateral pressure is not less than 0.2bar before start, the device of high-pressure plunger pump 5 carries water shortage protective switch, by high-pressure pump start and stop
Ballast formula sensing switch SPControl, if during hypotony, the power supply in electric control box 1 will be disconnected.
The grade annex of boom jet nozzle 13 is connected with water solenoid valve 12.
Water feed apparatus 7 is connected with water supply line, and opens water inlet system switch, ensures enough outputs and water supply
Pressure, it is ensured that the normal operation of machine.The part of contaminated water and debris that opening sewage draining exit 9 will filter out are drained, it is ensured that into high pressure
Current in plunger pump 5 are filtered water, ensure the normal operation of high-pressure plunger pump 5.
After work is fully completed above, battery main switch QF2, power turn-on master switch QF3 in electric control box 1 are opened
Motor 3, three water solenoid valves 12 and inverter supplies can be given.
KA1 will be switched in electric control box 1 to open, frequency converter timing current potential is adjusted and is zeroed first.
The branch road of water solenoid valve 12 is opened again, then starts the power switch SB3 of high-pressure plunger pump 5, and observation pressure shows
Show that the numerical value in table 10 is shown, adjust the speed governing current potential of frequency converter, make loine pressure reach needed for numerical value when, stop regulation frequency conversion
Device.
During if necessary to switch nozzle exit area, it can directly switch required shower nozzle, switching time is very short, three different branch
Road can open simultaneously, have no mutually locking device.
Claims (1)
1. a kind of adjustable superhigh pressure water jet device, it is characterised in that including electric control box (1), motor (3), shaft coupling
(4), high-pressure plunger pump (5), import security valve (6), water feed apparatus (7), filter (8), sewage draining exit (9), digital display manometer
(10), outlet pipeline (11), some water solenoid valves (12), boom jet nozzle (13), wherein:
Described electric control box (1) by connecting line respectively with the motor (3), high-pressure plunger pump (5), import security valve
(6), water solenoid valve (12) connects；
The motor (3) is used to drive high-pressure plunger pump (5) by shaft coupling (4), and the rotating of motor (3) and rotating speed are determined
Surely the hydraulic pressure size of reciprocating linear displacement and the output of high-pressure plunger pump (5) is driven；
The driving high-pressure plunger pump (5) includes plunger and cylinder body, and cylinder body is divided into two parts up and down by plunger, and cylinder body top enters
Mouth is connected with the water feed apparatus (7), is used for the break-make for controlling water inlet provided with import security valve (6) between the two；The cylinder body
Bottom is connected with the sewage draining exit (9), and the dirt being used between the two provided with filter (8) in filtered water inlet simultaneously passes through sewage draining exit
(9) discharge；
High-pressure water caused by plunger pump is transferred to each spray by the outlet at bottom of the inferior part of the cylinder block by outlet pipeline (11)
Boom jet nozzle (13), the main pipe rail of outlet pipeline (11) are provided with digital display manometer (10) and are used to observe the pressure in outlet pipeline,
Water solenoid valve (12) is respectively provided with some branch lines of outlet pipeline (11) and is attached thereto each boom jet nozzle (13) for control
Break-make；
Include frequency converter and switch board circuit system in electric control box (1), frequency conversion is provided between power input and motor
Device；Electric control box (1) is connected by connecting line with frequency converter；
The switch board circuit system includes battery main switch QF2, emergency stop switch SB1, switch TA1, draught fan control circuit (14),
Also include some branch roads, be respectively：Power supply instruction circuit for lamp, plunger pump control circuit (16), the first water solenoid valve control electricity
Road (18), the second water solenoid valve control circuit (19), the 3rd water solenoid valve control circuit (20),
Parallel relationship is formed between each branch road at nodes X, node Y respectively；
One end of the draught fan control circuit (14) is connected with node Y, and its other end passes sequentially through the switch TA1 of concatenation, jerk
Nodes X is then connected to after switch SB1；
The battery main switch QF2 is bordered by mains side input, is the master switch of whole switch board circuit system；
Concatenated between the emergency stop switch SB1, switch TA1, this two switches control the break-make of each branch road simultaneously；
The start and stop of plunger pump control circuit (16) the control plunger pumping unit, including power switch SB2, power switch SB3, two
Individual switch KA1, indicator lamp, ballast formula sensing switch SP, described two switch KA1 are respectively designated as opening according to position relationship
Close KA1, lower switch KA1, the power switch SB2, power switch SB3, lower switch KA1, ballast formula sensing switch SP successively
Concatenation, is connected between the power switch SB2, power switch SB3 by node A, the lower switch KA1 and ballast formula sensor
Connected by node B between switch SP, concatenated between the upper switch KA1, indicator lamp by node C；
The first water solenoid valve control circuit (18) controls the start and stop of the first water solenoid valve, including power switch SB4, electricity
Source switch SB5, two switch KA2, indicator lamps, described two switch KA1 according to position relationship be respectively designated as upper switch KA2,
Lower switch KA2, the power switch SB4, power switch SB5, lower switch KA2 are sequentially connected in series, the power switch SB4, power supply
Switch SB5, lower switch KA2 pass sequentially through node A1, node B1 connections, and node C1 is passed through between the upper switch KA2, indicator lamp
Concatenation；
The second water solenoid valve control circuit (19) controls the start and stop of the second water solenoid valve, including power switch SB6, electricity
Source switch SB7, two switch KA3, indicator lamps, described two switch KA3 according to position relationship be respectively designated as upper switch KA3,
Lower switch KA3, the power switch SB6, power switch SB7, lower switch KA3 are sequentially connected in series, the power switch SB6, power supply
Switch SB7, lower switch KA3 pass sequentially through node A2, node B2 connections, and node C2 is passed through between the upper switch KA3, indicator lamp
Concatenation；
The 3rd water solenoid valve control circuit (20) controls the start and stop of the 3rd water solenoid valve, including power switch SB8, electricity
Source switch SB9, two switch KA4, indicator lamps, described two switch KA4 according to position relationship be respectively designated as upper switch KA4,
Lower switch KA4, the power switch SB8, power switch SB9, lower switch KA4 are sequentially connected in series, the power switch SB8, power supply
Switch SB9, lower switch KA4 pass sequentially through node A3, node B3 connections, and node C3 is passed through between the upper switch KA4, indicator lamp
Concatenation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720178361.4U CN206707991U (en) | 2017-02-27 | 2017-02-27 | A kind of adjustable superhigh pressure water jet device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720178361.4U CN206707991U (en) | 2017-02-27 | 2017-02-27 | A kind of adjustable superhigh pressure water jet device |
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| CN206707991U true CN206707991U (en) | 2017-12-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108993974A (en) * | 2018-08-20 | 2018-12-14 | 中交疏浚技术装备国家工程研究中心有限公司 | Clear up the system and method for cutter suction dredger reamer head automatically using high-pressure jet |
-
2017
- 2017-02-27 CN CN201720178361.4U patent/CN206707991U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108993974A (en) * | 2018-08-20 | 2018-12-14 | 中交疏浚技术装备国家工程研究中心有限公司 | Clear up the system and method for cutter suction dredger reamer head automatically using high-pressure jet |
| CN108993974B (en) * | 2018-08-20 | 2024-02-23 | 中交疏浚技术装备国家工程研究中心有限公司 | System and method for automatically cleaning cutter head of cutter suction dredger by utilizing high-pressure jet flow |
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