CN201598666U - Contact-type submersible jetting gaslift ditcher - Google Patents
Contact-type submersible jetting gaslift ditcher Download PDFInfo
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- CN201598666U CN201598666U CN2010201040709U CN201020104070U CN201598666U CN 201598666 U CN201598666 U CN 201598666U CN 2010201040709 U CN2010201040709 U CN 2010201040709U CN 201020104070 U CN201020104070 U CN 201020104070U CN 201598666 U CN201598666 U CN 201598666U
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Abstract
The utility model discloses a contact-type submersible jetting gaslift ditcher. A flow guiding plate and a jet head at the lower end thereof are arranged at the lower part of a machine body; a machine body framework comprises a left side beam, a right side beam, a front main cross beam and a rear main cross beam, the two side beams and the two main cross beams are connected into a four-bar framework, and skids are connected between the end parts of the two main cross beams on the same side; a guiding frame guide rail with an H-shaped front pipeline guiding frame is arranged on the main cross beam at the front end of the four-bar framework; a guiding frame guide rail with a gaslift pipe channel and an H-shaped rear pipeline guiding frame is arranged on the main cross beam at the rear end of the four-bar framework; a plurality of high-pressure water nozzles are arranged at the lower part of the H-shaped front pipeline guiding frame; and a high-pressure water inlet flange is arranged above the H-shaped front pipeline guiding frame. Through adjusting the structures and sizes of the skids and the main cross beams, wide and narrow ditchers can be realized, and the purpose of trench digging in ditches is achieved; moreover, the complete machine is submersible, with high-pressure water jet cutting in the front, mighty water flow jetting in the middle, and gas lift sludge discharge at the back.
Description
Technical field
The utility model relates to a kind of oil transportation, gas transmission of various calibers under water, the ditching operation equipment of water supply and sewerage pipeline, relates in particular to a kind of contact diving jet spray qi of chong channel ascending adversely and lifts the formula trenching machine.
Background technology
At present, the contact trenching machine is adopted in the ditching operation field more under water, and promptly ditching equipment is directly ridden over by guide legs and carries out ditching operation on the submerged pipeline, and the form of structure of equipment is strand suction formula, strand jet absorption type and suspension jetting type etc.But subject matter is; Plant capacity is little, efficient is low, cost is high and big to negative line pressure, particularly digs more than 2 meters zanjon for seabed pipeline and then can't construct.
The utility model content
In order to overcome the shortcoming of prior art, the utility model provides a kind of contact diving jet spray qi of chong channel ascending adversely to lift the formula trenching machine, its power is big, efficient is high, reliability is high, can be equipped to wide, narrow type trenching machine by adjusting combination, can realize within 2 meters and the construction of the zanjon (as ditching in ditch) more than 2 meters.
In order to solve the problems of the technologies described above, the technical scheme that the utility model contact diving jet spray qi of chong channel ascending adversely act formula trenching machine is achieved is: comprise dynamicliquid pressure station and the body that is positioned at body support frame top, described underpart is provided with the shower nozzle of deflector and its lower end; Two main beams that two curb girders that distribute about described organism frame comprises and front and back distribute, above-mentioned two curb girders and two main beams connect into one or four bar frameworks, are connected with skid between the end of described two main beam homonymies respectively; Be positioned at the leading truck guide rail that is provided with H type preceding pipeline leading truck on the main beam of above-mentioned four bar framework front ends; Be positioned at the leading truck guide rail that is provided with pipeline leading truck behind eduction column passage and the H type on the main beam of above-mentioned four bar back-end frameworks; The bottom of described H type preceding pipeline leading truck is provided with a plurality of hydraulic sprays; Described H type preceding pipeline leading truck top is provided with the water under high pressure water-in flange.
The formula trenching machine is lifted in the utility model contact diving jet spray qi of chong channel ascending adversely, wherein, the CD-ROM drive motor that is provided with axial-flow pump in the described body and matches, the top of described body is provided with the oil inlet and outlet bolt of described CD-ROM drive motor, and the port of the hydralic hose at described dynamicliquid pressure station is connected with oil inlet and outlet.Described skid is the circular skid of trapezoidal skid of float-type or float-type.Be provided with Sonar Probe on the pipeline leading truck behind described H type preceding pipeline leading truck and the H type; Described Sonar Probe is connected with a sonar surveillance device.
Compared with prior art, the beneficial effects of the utility model are
(1) in the utility model trenching machine, the forward and backward pipeline leading truck of its H type not only plays the trenching machine guide effect, and H type preceding pipeline leading truck possesses the jetting cutting function, the pipeline leading truck possesses the silt gas lift behind the H type, really accomplish the integrated of function, use the utility model can realize its complete machine diving, and precedingly cut for water jetting at high pressure, in dash for the spray of powerful current, the back is gaslift spoil disposal sand.
(2) the utility model trenching machine possesses the main beam that two cover skids, the different width of two cover and length are arranged, through exchanging the branch that can reach wide, narrow trenching machine, that is: the ditching degree of depth is when dark (normally surpassing 2.5 meters zanjon), in the incipient stage of ditching, be equipped with trapezoidal skid of float-type and width and all bigger main beam of length earlier and form wide type trenching machine, relying on this skid and organism frame that trenching machine is supported on the original sea bed excavates, after digging certain depth, can on sea bed, form the ditch of a broad; Then, circular skid of the float-type that changes the outfit again and width and all less main beam of length form narrow type trenching machine, continuation continues to excavate on the basis of excavating good wide (shallow) ditch, reach " dig in the ditch zanjon " purpose, technology by above-mentioned " digging zanjon in the ditch ", can realize that finally excavation depth can reach the zanjon more than 4 meters, this is the inaccessiable far away excavation depth of present prior art trenching machine.
(3) the utility model trenching machine can realize that the T type of jet spray qi of chong channel ascending adversely act formula sprays cutting mode, that is: the shower nozzle by underpart and be positioned at the H type before the hydraulic spray of leading truck bottom, have the strong current spray and dash, make and excavate effect thereby obtain the best by liquid stream direct projection mining position; Can satisfy the different requirements of spraying angle of attack degree of trenching machine by the deflector of adjusting underpart.The length distance of leading truck can be adjusted the requirement that can adapt to the different pipeline ditching degree of depth; Design unique trenching machine pump housing shape according to ditching characteristics under water, used the powerful axial-flow pump and the motor that matches, produced the spray bath stream of big flow high flow rate during operation, improved the efficient of equipment.
Description of drawings
Fig. 1-the 1st, the wide type trenching machine of formula front view is lifted in the utility model contact diving jet spray qi of chong channel ascending adversely;
Fig. 1-2 is the vertical view of trenching machine shown in Fig. 1-1;
Fig. 1-the 3rd, the left view of trenching machine shown in Fig. 1-1;
Fig. 1-the 4th, the right view of trenching machine shown in Fig. 1-1;
Fig. 2 is that the wide type trenching machine of formula total system composition diagram is lifted in the utility model contact diving jet spray qi of chong channel ascending adversely;
Fig. 3-the 1st, the narrow type trenching machine of formula front view is lifted in the utility model contact diving jet spray qi of chong channel ascending adversely;
Fig. 3-the 2nd, the vertical view of trenching machine shown in Fig. 3-1;
Fig. 3-the 3rd, the left view of trenching machine shown in Fig. 3-1;
Fig. 3-the 4th, the right view of trenching machine shown in Fig. 3-1;
Fig. 4 is that the narrow type trenching machine of formula total system composition diagram is lifted in the utility model contact diving jet spray qi of chong channel ascending adversely.
The specific embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done to describe in detail.
The description of reference numerals of main parts size and details correspondence is as follows in the utility model Figure of description:
1. attitude monitoring instrument 2. preposition sonar surveillance device 3. rearmounted sonar surveillance devices
4.GPS global position system 5. hydralic hose winches 6. dynamicliquid pressure stations
7. power pumping plant 8. high-pressure hydraulic pump units 9. air compressor unit
10. trenching machine 20. ditch shapes 30. seabed pipelines
40. original sea bed 11,18. skids 12,19. front and back main beams
13. last left and right beam 14. bodies 141. oil inlet and outlet bolts
142. deflector 15. leading truck guide rail 16.H type preceding pipeline leading trucks
161,171. Sonar Probe, 162. high pressure water-in flange, 163. hydraulic sprays
17.H pipeline leading truck 172. air inlet bolts 173. eduction column passages behind the type
As Fig. 1-1 and shown in Figure 2, the formula trenching machine is lifted in a kind of contact diving of the utility model jet spray qi of chong channel ascending adversely, comprise dynamicliquid pressure station 6 and the body 14 that is positioned at body support frame top, described body 14 bottoms are provided with the deflector 142 that can adjust direction and the shower nozzle of its lower end, described trenching machine shower nozzle branch length, caliber size are purchased, under different operating modes, change at any time, to satisfy the requirement that various different operating mode sprays are dashed.Two main beams 12 that two curb girders 13 that distribute about described organism frame comprises and front and back distribute, above-mentioned two curb girders 13 and two main beams 12 connect into one or four bar frameworks, shown in Fig. 1-2 and Fig. 3-2, be connected with skid respectively between the end of described two main beam 12 homonymies; Different according to the ditching width and the degree of depth, when for example digging wide and dark ditch, described skid adopts the trapezoidal skid 11 of float-type shown in Fig. 1-1 and Fig. 1-4, if just adopt the circular skid 18 of float-type shown in Fig. 3-1 and Fig. 3-4 when the ditch that digs is narrower, in like manner, the length of the main beam 12 that distributes before and after two also is can be according to its length of different choice of ditching width, so that make two distances between the skid suitable.The leading truck guide rail of pipeline leading truck 17 after being provided with H type preceding pipeline leading truck 16 and H type on the main beam 12 that is positioned at above-mentioned four bar framework front ends; Be positioned at pipeline leading truck 17 behind the H type that is provided with eduction column passage 173 on the main beam 12 of above-mentioned four bar back-end frameworks; The length of the forward and backward pipeline leading truck 16,17 of described H type can be fixed in pipeline leading truck guide rail 15 and also can be regulated.Be provided with Sonar Probe on the pipeline leading truck 17 behind described H type preceding pipeline leading truck 16 and the H type, described Sonar Probe is connected with the sonar surveillance device of peripheral hardware; The bottom of described H type preceding pipeline leading truck is provided with a plurality of hydraulic sprays; Described H type preceding pipeline leading truck 16 tops are provided with water under high pressure water-in flange 162.
Be the embodiment of wide, the narrow type trenching machine that forms by the utility model below.
Embodiment 1: wide type trenching machine
Fig. 1-1, Fig. 1-2, Fig. 1-3, Fig. 1-4 and shown in Figure 2, by the skid in the utility model being configured to the trapezoidal skid 11 of float-type and horizontal girder being configured to the summit that its length is stretched out the body support frame, constitute a kind of contact diving jet spray qi of chong channel ascending adversely thus and lift the wide type trenching machine of formula, as shown in Figure 2, this trenching machine and other external equipments constitute a trenching machine total system, comprise attitude monitoring instrument 1, preposition sonar surveillance device 2, rearmounted sonar surveillance device 3, GPS star navigation system 4, hydralic hose winch (sebific duct folding and unfolding) 5, dynamicliquid pressure station 6, power pumping plant 7, high-pressure hydraulic pump unit 8, air compressor unit 9 and wide type trenching machine 10.Shown in Fig. 1-2, be distributed in two forward and backward main beams 12 of the parallel curb girder in two left and right sides 13 in the trenching machine 10, its length is greater than the distance between two curb girders; Shown in Fig. 1-1, Fig. 1-3 and Fig. 1-4, can guarantee like this to be arranged between the trapezoidal skid 11 of two float-types of two main beam 12 ends and have bigger distance, to satisfy the demand of digging wide type ditch.
Embodiment 2: narrow type trenching machine
Fig. 3-1, Fig. 3-2, Fig. 3-3, Fig. 3-4 and shown in Figure 4, coincide by the skid in the utility model being configured to the circular skid 18 of float-type and horizontal girder being configured to its end points summit lucky and the body support frame, constitute a kind of contact diving jet spray qi of chong channel ascending adversely thus and lift the narrow type trenching machine of formula, as shown in Figure 4, the trenching machine total system that this trenching machine and other external equipments constitute, the same, do not repeat them here.
In the utility model trenching machine, it is (wide respectively to be connected with two leading truck guide rails on the main beam of described front and back, narrow type trenching machine is general), H type preceding pipeline leading truck top links to each other with the water-supply-pipe of the high-pressure hydraulic pump unit of peripheral hardware with bolt by the flange of portion disposed thereon, described H type preceding pipeline leading truck 16 is provided with preposition Sonar Probe 161, described H type preceding pipeline leading truck 16 tops are provided with water under high pressure water-in flange 162 (linking to each other with bolt with the glue pipe flange that comes of the high-pressure hydraulic pump unit 8 of peripheral hardware), and 16 times front portions of described H type preceding pipeline leading truck are provided with a plurality of hydraulic sprays 163 that are used for the cutting of ditching open circuit; Pipeline leading truck behind the H type (i.e. 4 gaslift tube channel 173) top links to each other with the appendix of the air compressor unit 9 of peripheral hardware by being arranged on top air inlet bolt, and pipeline leading truck bottom is preferably made 45 degree angles and is provided with the gaslift nozzle that leads to gaslift tube channel 173 behind the H type.High-power in order to add, the pump housings that are provided with in the body of the present utility model 14 are axial-flow pump and the CD-ROM drive motor that matches thereof, the top of described body 14 is provided with the oil inlet and outlet bolt 141 of described CD-ROM drive motor, as shown in Figure 2, the port of the hydralic hose at described dynamicliquid pressure station 6 is connected with oil inlet and outlet.Trenching machine adopts the suction of double pump bilateral level, two-in-one single port water spray T shape structure, and adopt high-power and high-speed fluid motor-driven impeller, reach the double motor double pump and drive separately, simultaneously running; The hydraulic oil stream that utilizes the dynamicliquid pressure station to produce provides hydraulic power for CD-ROM drive motor, the oil stream of hydraulic motor drives the rotation of body inner motor, the rotation of motor impeller produces suction stream, the import of the body left and right sides is intake simultaneously, change the direction (becoming the straight line current) of current again by rotary water current by the guide vane in the body, sea (river) bed is dashed in the spray of high-speed large-flow current, add the jetting cutting of high-pressure spray mechanism and (sea bed is left many ditches by the High-Pressure Water that many spraying water faucets penetrate, form section), the speed and the ditch shape of ditching are guaranteed fully, the ditch shape rule of being dug out, ditch both sides angle of slope is the 5-30 degree, near vertical.In a word, the utility model trenching machine possesses that jet, spray dash, the gaslift function, and comprehensive function, precedingly is the water jetting at high pressure cutting at complete machine diving, in dash for powerful current spray, the back is a gaslift spoil disposal sand.Except that the left and right skid of float-type (trapezoidal, circle) and (wide, narrow) forward and backward main beam, other is common elements, adjusts slightly just at the construction field (site) to reach the purpose of digging zanjon in the ditch.
The utility model in use, as Fig. 2 and shown in Figure 4, the skid of trenching machine is supported on the original sea bed 40, and the net load of trenching machine is delivered on this sea bed 40 by skid, thereby reduced negative pressure, avoided behind the pipeline local compression stress to concentrate and destroyed pipeline.
Can further guarantee to strengthen the allomeric function of this trenching machine with the matching used external equipment of the utility model trenching machine.
Attitude monitoring instrument 1: the sensor of attitude monitoring instrument is installed on the skid, and its main frame is installed in the central control room of workboat, understands the state of trenching machine by the demonstration of main frame, adjusts in real time.
Gps satellite navigation system 4: utilize gps satellite navigation system 4 to determine the workboat location.
Hydralic hose winch 5: utilize the rotation of himself fluid motor-driven hydralic hose winch drum to realize the function that hydralic hose is deposited, puts, received.
Dynamicliquid pressure station 6: the hydraulic oil stream that utilizes dynamicliquid pressure station 6 to produce provides hydraulic power for CD-ROM drive motor.
High-pressure hydraulic pump unit 8: water pump assembly provides the high-pressure spray water source to H type preceding pipeline leading truck, before and after the pipeline leading truck each one, as Fig. 2 and shown in Figure 4, ride during operation on pipeline 30, be the trenching machine guiding.On the H type preceding pipeline leading truck nozzle is installed, top be equipped with can with the high-pressure water pipe flange connecting.During operation, start high-pressure hydraulic pump, the nozzle ejection High-Pressure Water can cut out passage for the pipeline leading truck, makes things convenient for leading truck to pass through, and also helps spray simultaneously and is washed into ditch.
Air compressor unit 9: pipeline leading truck after air compressor unit provides high pressure gaslift source of the gas to the H type makes the mud of pipe trench bottom, sandy soil be enumerated the pipe trench bottom under the air-flow effect by 4 gaslift passages of pipeline leading truck.
The utility model trenching machine be applicable to the pre-ditching of submerged pipeline, back ditching, underwater line reparation, deposited buried, the various snag pipe of submarine pipeline dig pit in advance, under water sand clean in advance, the submerged groin finishing, under water rubble rubbish cleaning, desilt and dredge under water, multi-functional multinomial purpose construction such as underwater salvage is looked for something.
In addition, in order to reach the purpose of being convenient to highway transportation, this equipment body frame can be carried out dismounting at any time; Wide type skid is trapezoidal, skid is supported on the sea bed, and narrow type sled is supported on for garden shape on the inclined-plane on ditch slope, and the net load of trenching machine is delivered on the sea bed by skid, thereby reduced negative pressure, avoided behind the pipeline local compression stress to concentrate and destroyed pipeline.Monitor And Control Subsystem can be to pipeline position, the trenching machine fuselage state, and ditching ditch shape (furrow width, ditch depth) is monitored in real time.Adopt that the utility model equipment ditching speed is fast, a machine is how multifunctional combined, realize digging in the ditch zanjon purpose, the grooving rule, sea bed destroyed lack.
Although in conjunction with figure the utility model is described above; but the utility model is not limited to the above-mentioned specific embodiment; the above-mentioned specific embodiment only is schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; under the situation that does not break away from the utility model aim, can also make a lot of distortion, these all belong within the protection of the present utility model.
Claims (4)
1. the formula trenching machine is lifted in contact diving jet spray qi of chong channel ascending adversely, comprises dynamicliquid pressure station (6) and is positioned at body (14) above the body support frame, it is characterized in that:
Described body (14) bottom is provided with the shower nozzle of deflector (142) and its lower end;
Two main beams (12) that two curb girders (13) that distribute about described organism frame comprises and front and back distribute, above-mentioned two curb girders (13) and two main beams (12) connect into one or four bar frameworks, are connected with skid between the end of described two main beam homonymies respectively;
Be positioned at the leading truck guide rail (15) that is provided with H type preceding pipeline leading truck (16) on the main beam (12) of above-mentioned four bar framework front ends; Be positioned at the leading truck guide rail that is provided with pipeline leading truck (17) behind eduction column passage (173) and the H type on the main beam (12) of above-mentioned four bar back-end frameworks;
The bottom of described H type preceding pipeline leading truck is provided with a plurality of hydraulic sprays; Described H type preceding pipeline leading truck 16 tops are provided with water under high pressure water-in flange (162).
2. lift the formula trenching machine according to the described contact diving of claim 1 jet spray qi of chong channel ascending adversely, it is characterized in that: the CD-ROM drive motor that is provided with axial-flow pump and matches in the described body (14), the top of described body (14) is provided with the oil inlet and outlet bolt (141) of described CD-ROM drive motor, and the port of the hydralic hose at described dynamicliquid pressure station (6) is connected with oil inlet and outlet.
3. lift the formula trenching machine according to the described contact diving of claim 1 jet spray qi of chong channel ascending adversely, it is characterized in that: described skid is the circular skid (18) of trapezoidal skid of float-type (11) or float-type.
4. lift the formula trenching machine according to the described contact diving of claim 1 jet spray qi of chong channel ascending adversely, it is characterized in that: be provided with Sonar Probe on the pipeline leading truck (17) behind described H type preceding pipeline leading truck (16) and the H type; Described Sonar Probe is connected with a sonar surveillance device (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201040709U CN201598666U (en) | 2010-01-29 | 2010-01-29 | Contact-type submersible jetting gaslift ditcher |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201040709U CN201598666U (en) | 2010-01-29 | 2010-01-29 | Contact-type submersible jetting gaslift ditcher |
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| Publication Number | Publication Date |
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| CN201598666U true CN201598666U (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201040709U Expired - Lifetime CN201598666U (en) | 2010-01-29 | 2010-01-29 | Contact-type submersible jetting gaslift ditcher |
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| Country | Link |
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| CN (1) | CN201598666U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418358A (en) * | 2011-09-15 | 2012-04-18 | 王宇 | Power positioning jet-flow spraying type ditcher |
| CN103114620A (en) * | 2013-02-28 | 2013-05-22 | 江苏华西村海洋工程服务有限公司 | High-power submersed front-and-back-flow-jetting air-lift submarine pipeline ditching machine and ditching technology |
| CN103215980A (en) * | 2013-04-15 | 2013-07-24 | 山东海盛海洋工程集团有限公司 | Air-lift slurry discharge subsea pipeline on-line trenching equipment |
| CN103452152A (en) * | 2012-06-01 | 2013-12-18 | 天津市海王星海上工程技术有限公司 | Diving step-type trencher |
| CN104328814A (en) * | 2014-09-28 | 2015-02-04 | 中国海洋石油总公司 | Great-depth seafloor pipeline post-trenching process |
| CN104278657B (en) * | 2014-10-24 | 2016-03-16 | 张文博 | A kind of dredging method |
| CN106245703A (en) * | 2016-09-30 | 2016-12-21 | 福建（泉州）哈工大工程技术研究院 | A kind of culvert dredging robot driven based on water under high pressure |
| CN106498998A (en) * | 2016-10-17 | 2017-03-15 | 杭州电子科技大学 | A kind of hydraulic turbine drives punching to penetrate formula ditching device and its trench digging method under water |
| CN107989003A (en) * | 2018-01-23 | 2018-05-04 | 中国水利水电第四工程局有限公司 | A kind of guider for assisted mining water channel |
| CN109024741A (en) * | 2018-09-28 | 2018-12-18 | 大连理工大学 | A kind of modularization seabed ditcher |
-
2010
- 2010-01-29 CN CN2010201040709U patent/CN201598666U/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102418358B (en) * | 2011-09-15 | 2013-08-07 | 天津俊昊海洋工程有限公司 | Power positioning jet-flow spraying type ditcher |
| CN102418358A (en) * | 2011-09-15 | 2012-04-18 | 王宇 | Power positioning jet-flow spraying type ditcher |
| CN103452152B (en) * | 2012-06-01 | 2015-06-10 | 天津市海王星海上工程技术有限公司 | Diving step-type trencher |
| CN103452152A (en) * | 2012-06-01 | 2013-12-18 | 天津市海王星海上工程技术有限公司 | Diving step-type trencher |
| CN103114620A (en) * | 2013-02-28 | 2013-05-22 | 江苏华西村海洋工程服务有限公司 | High-power submersed front-and-back-flow-jetting air-lift submarine pipeline ditching machine and ditching technology |
| CN103215980A (en) * | 2013-04-15 | 2013-07-24 | 山东海盛海洋工程集团有限公司 | Air-lift slurry discharge subsea pipeline on-line trenching equipment |
| CN104328814A (en) * | 2014-09-28 | 2015-02-04 | 中国海洋石油总公司 | Great-depth seafloor pipeline post-trenching process |
| CN104278657B (en) * | 2014-10-24 | 2016-03-16 | 张文博 | A kind of dredging method |
| CN106245703A (en) * | 2016-09-30 | 2016-12-21 | 福建（泉州）哈工大工程技术研究院 | A kind of culvert dredging robot driven based on water under high pressure |
| CN106498998A (en) * | 2016-10-17 | 2017-03-15 | 杭州电子科技大学 | A kind of hydraulic turbine drives punching to penetrate formula ditching device and its trench digging method under water |
| CN106498998B (en) * | 2016-10-17 | 2018-11-02 | 杭州电子科技大学 | The underwater ditching device of formula and its trench digging method are penetrated in a kind of driving punching of the hydraulic turbine |
| CN107989003A (en) * | 2018-01-23 | 2018-05-04 | 中国水利水电第四工程局有限公司 | A kind of guider for assisted mining water channel |
| CN107989003B (en) * | 2018-01-23 | 2022-11-25 | 中国水利水电第四工程局有限公司 | Guide device for assisting in excavating water channel |
| CN109024741A (en) * | 2018-09-28 | 2018-12-18 | 大连理工大学 | A kind of modularization seabed ditcher |
| CN109024741B (en) * | 2018-09-28 | 2024-03-26 | 大连理工大学 | Modularized seabed trencher |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101006 |