CN101824965B - Hydraulic pulse cavitating jet generation device - Google Patents

Hydraulic pulse cavitating jet generation device Download PDF

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Publication number
CN101824965B
CN101824965B CN 201010141190 CN201010141190A CN101824965B CN 101824965 B CN101824965 B CN 101824965B CN 201010141190 CN201010141190 CN 201010141190 CN 201010141190 A CN201010141190 A CN 201010141190A CN 101824965 B CN101824965 B CN 101824965B
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CN
China
Prior art keywords
impeller
axle sleeve
hydraulic pulse
baffle
jet generation
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Active
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CN 201010141190
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Chinese (zh)
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CN101824965A (en
Inventor
李根生
史怀忠
申瑞臣
何爱国
牛继磊
黄中伟
田守嶒
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China University of Petroleum Beijing CUPB
China University of Petroleum UPC East China
CNPC Engineering Technology R&D Co Ltd
Original Assignee
China University of Petroleum Beijing CUPB
China University of Petroleum UPC East China
CNPC Drilling Research Institute Co Ltd
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Application filed by China University of Petroleum Beijing CUPB, China University of Petroleum UPC East China, CNPC Drilling Research Institute Co Ltd filed Critical China University of Petroleum Beijing CUPB
Priority to CN 201010141190 priority Critical patent/CN101824965B/en
Publication of CN101824965A publication Critical patent/CN101824965A/en
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Abstract

The invention provides a hydraulic pulse cavitating jet generation device. The device comprises a hollow column body, wherein one end of the body is a fluid inlet section, the other end is a fluid outlet section, an accommodation cavity is formed between the fluid inlet section and the fluid outlet section, a baffle, an impeller assembly and a self-oscillation nozzle are orderly arranged in the accommodation cavity, one side of the accommodation cavity close to the fluid outlet section is provided with an annular flange, one surface of the flange facing towards the fluid inlet section forms a positioning end surface, and the self-oscillation nozzle can abut on and be positioned on the positioning end surface; and a top compression ring is arranged at one side close to the fluid inlet section of the body, and the accommodation cavity of the body is connected with and abuts on the baffle by threaded connection. By arranging seal washers in the hydraulic pulse cavitating jet generation device, the invention can improve the sealing effect, effectively prevents mud from flowing into the device, facilitates the maintenance and the replacement of internal parts, and simultaneously, further prolongs the service life of the impeller shaft.

Description

Hydraulic pulse cavitating jet generation device
Technical field
The present invention relates to a kind of hydraulic pulse cavitating jet generation device for drillng operation, especially a kind ofly be convenient to the maintain and replace inner body, have good lubricated and sealing performance, the hydraulic pulse cavitating jet generation device in application life that can the Effective Raise impeller shaft.
Background technology
Waterpower pulse cavitation jet well drilling device is a vitals realizing the waterpower pulse cavitation jet drilling technology, this device is installed between drill bit and the drill collar during drilling well, or between drill bit and the mud motor, the continuous-flow drilling fluid of drill collar or mud motor outflow is transformed into pulse cavitating jet, pulse cavitating jet is incident upon the shaft bottom through bit nozzle, produce waterpower pulse, cavitation and cavitation erosion, 3 kinds of effects of instantaneous negative pressure, thereby change bottom-hole flow field and rock stress, thereby improve rate of penetration.
This case applicant, disclose a kind of " waterpower pulse cavitation jet well drilling device, method and drill bit " for " 200610098598.8 " number in Chinese patent application, this waterpower pulse cavitation jet well drilling device impeller in the drilling fluid bump impeller base of diversion division of in drilling process, flowing through, blade is subject to continuous tangential force effect and the continuous high speed rotation, and High Rotation Speed process change area of passage causes pressure and flow velocity cycle pulsatile change.This device is installed on the Bottom Hole Assembly (BHA) in the waterpower pulse cavitation jet drilling process, and the shaft bottom is because the factors such as high temperature, high pressure, high flow rate, drilling fluid complicated component cause working environment very abominable.Common polycrystalline diamond compact bit normal working hours is more than 220 hours, therefore, for supporting with downhole tool, waterpower pulse cavitation jet well drilling device also must be above 220 hours in underground work, and a most important life-span that link is exactly impeller shaft in the waterpower pulse cavitation jet well drilling device, abominable underground work environment and High Rotation Speed cause the impeller shaft serious wear, even fracture, will directly cause tool failures.In this known waterpower pulse cavitation jet well drilling device, baffle, impeller assembly and vibration nozzle are embedded in the body for mutual butt successively, by drilling fluid the impeller shaft that is hubbed in the impeller assembly are lubricated.In the down-hole extremely under the rugged environment, and sealing state is not good, down-hole slurry can be easy to enter in the waterpower pulse cavitation jet well drilling device, and impeller and the change of team of impeller shaft high-speed rotary produce a large amount of heat, therefore be easy to cause the wearing and tearing of impeller shaft, depend merely on drilling fluid and can't ensure its application life to the lubricated of impeller.In addition, because in drilling process, mud a large amount of in known structure can enter in the waterpower pulse cavitation jet well drilling device, stuck between baffle, impeller assembly and vibration nozzle and the body that causes arranging in it, when waterpower pulse cavitation jet well drilling device takes out maintenance from the down-hole, each part of its inside is carry out demolition and replacement very difficult, cause whole parts to be scrapped, thereby improved use cost.
Summary of the invention
The objective of the invention is to be to provide a kind of hydraulic pulse cavitating jet generation device, make it easy to the maintain and replace inner body, have good lubricated and sealing performance, with the application life of Effective Raise impeller shaft.
For this reason, the present invention proposes a kind of hydraulic pulse cavitating jet generation device, comprise: a hollow columnar body, one end of described body is the fluid intake section, the other end is the fluid issuing section, between described fluid intake section and fluid issuing section, consist of accommodating cavity, be provided with successively baffle, impeller assembly and self-oscillation nozzle in it; Described impeller assembly has impeller base, impeller and described impeller is hubbed on impeller shaft on the impeller base; It is characterized in that, described accommodating cavity is provided with a ring flange near fluid issuing section one side, and described flange consists of the location end face towards the one side of described fluid intake section, and described self-oscillation nozzle can butt, be positioned described location end face; One top pressure ring is arranged on fluid intake section one side near described body, is threaded connection and is resisted against described baffle with the accommodating cavity of described body.
Aforesaid hydraulic pulse cavitating jet generation device wherein, is equipped with gasket seal between described top pressure ring, baffle, impeller assembly, self-oscillation nozzle, the location end face.
Aforesaid hydraulic pulse cavitating jet generation device, wherein, the internal diameter of described accommodating cavity is greater than the external diameter of described baffle and impeller assembly, and forms accumulator between the periphery wall of the internal face of described accommodating cavity and described baffle and impeller assembly.
Aforesaid hydraulic pulse cavitating jet generation device, wherein, the perisporium of described accommodating cavity is provided with the groove of a ring hole enlargement, and described groove is positioned at described accumulator, described body is provided with the oil filler point that is connected with described groove, and an oiling bolt can screw in described oil filler point hermetically.
Aforesaid hydraulic pulse cavitating jet generation device, wherein, the sidewall of wheel seat is provided with two opposed through shaft holes, and the axis of described axis hole and the longitudinal axis of described accommodating cavity are perpendicular, and described axis hole forms outer dia greater than the shoulder hole of inside diameter.
Aforesaid hydraulic pulse cavitating jet generation device, wherein, the two ends of described impeller shaft can be arranged in the described axis hole rotationally by axle sleeve, and described axle sleeve is arranged in the axle sleeve containing hole that the outside large diameter hole by described shoulder hole consists of.
Aforesaid hydraulic pulse cavitating jet generation device wherein, is provided with combined seal ring between the cascaded surface of described axle sleeve and described shoulder hole.
Aforesaid hydraulic pulse cavitating jet generation device, wherein, described axle sleeve containing hole is provided with internal thread, and described axle sleeve is provided with external screw thread, is fixedly connected with described impeller base by the described axle sleeve of this internal and external screw thread.
Aforesaid hydraulic pulse cavitating jet generation device, wherein, the lateral surface of described axle sleeve is provided with at least one groove, by described groove described axle sleeve is combined in the described impeller base, and compresses described combined seal ring.
Aforesaid hydraulic pulse cavitating jet generation device wherein, is characterized in that, has a reducing diameter part towards the described impeller base of described fluid issuing section one side, and described reducing diameter part can be embedded in the described self-oscillation nozzle.
The waterpower pulse cavitation jet device that the present invention proposes, by between top pressure ring, baffle, impeller base, self-oscillation nozzle, gasket seal being set, and at impeller base and shaft room combined seal ring is set, each parts of this device are connected closely, improve its sealing effectiveness, prevent that effectively mud from entering between baffle, impeller assembly, self-oscillation nozzle and the body, thereby baffle, impeller assembly, self-oscillation nozzle can be stuck at work, be convenient to dismounting maintenance and the replacing of each component, greatly reduce use cost.By the lubrication oil in the accumulator, can the impeller shaft that run up be lubricated, effectively prolonged the application life of impeller shaft.The present invention is because at the flange of accommodating cavity near the setting of fluid issuing section one side, formation can make the location end face of self-oscillation nozzle butt, location, and the reducing diameter part that forms on the impeller base and the chimeric location of self-oscillation nozzle, therefore under the effect of top pressure ring, make mutually accurate positioning between each parts that is arranged in the accommodating cavity, connect closely, thereby can effectively overcome the packing problem that causes because of mismachining tolerance, further reduce manufacturing cost.
Description of drawings
The following drawings only is intended to the present invention done and schematically illustrates and explain, not delimit the scope of the invention.Wherein,
Fig. 1 is the assembling schematic diagram of waterpower pulse cavitation jet device of the present invention;
Fig. 2 is the local enlarged diagram at A place among Fig. 1;
Fig. 3 is the cross-sectional schematic of the body of hydraulic pulse cavitating jet generation device of the present invention;
Fig. 4 A is the top ring structure schematic diagram of hydraulic pulse cavitating jet generation device of the present invention;
Fig. 4 B is the cross-sectional schematic of top pressure ring;
Fig. 5 A is that the baffle upper surface gasket seal master of hydraulic pulse cavitating jet generation device of the present invention looks schematic diagram;
Fig. 5 B is the cross-sectional schematic of baffle upper surface gasket seal;
Fig. 6 A is that the baffle lower surface gasket seal master of hydraulic pulse cavitating jet generation device of the present invention looks schematic diagram;
Fig. 6 B is the cross-sectional schematic of baffle lower surface gasket seal;
Fig. 7 A is the structural representation of the axle sleeve of hydraulic pulse cavitating jet generation device of the present invention;
Fig. 7 B is the cross-sectional schematic of axle sleeve;
Fig. 8 A is the structural representation of the impeller base of hydraulic pulse cavitating jet generation device of the present invention;
Fig. 8 B is the cross-sectional schematic of impeller base.
The drawing reference numeral explanation:
1, body 11, fluid intake section 12, fluid issuing section 13, accommodating cavity
131, internal thread 132, groove 14, flange 141, location end face
15, oil filler point 16, oiling bolt 2, top pressure ring 21, external screw thread
22, screw 3, baffle 4, impeller assembly 41, impeller shaft
42, axle sleeve 421, external screw thread 422, groove 423, endoporus
424, lateral surface 425, medial surface 43, impeller base 431, reducing diameter part
44, impeller 46, axis hole 461, axle sleeve containing hole 462, cascaded surface
463, internal thread 5, self-oscillation nozzle 6, accumulator 7,73, gasket seal
71, baffle upper surface gasket seal 72, baffle lower surface gasket seal
8, combined seal ring
The specific embodiment
Understand for technical characterictic of the present invention, purpose and effect being had more clearly, now contrast description of drawings the specific embodiment of the present invention.
Fig. 1 is the assembling schematic diagram of waterpower pulse cavitation jet device of the present invention; Fig. 3 is the cross-sectional schematic of the body of hydraulic pulse cavitating jet generation device of the present invention; Fig. 4 A is the top ring structure schematic diagram of hydraulic pulse cavitating jet generation device of the present invention; Fig. 4 B is the cross-sectional schematic of top pressure ring.As shown in the figure, the hydraulic pulse cavitating jet generation device that the present invention proposes comprises: a hollow columnar body 1, one end of described body 1 is fluid intake section 11, the other end is fluid issuing section 12, between described fluid intake section 11 and fluid issuing section 12, consist of accommodating cavity 13, be provided with successively baffle 3, impeller assembly 4 and self-oscillation nozzle 5 in it, described impeller assembly 4 has impeller base 43, impeller 44 and described impeller 44 is hubbed on impeller shaft 41 on the impeller base 43.Wherein, described accommodating cavity 13 is provided with a ring flange 14 near in fluid issuing section 12 1 side direction, and described flange 14 consists of location end face 141 towards the one side of described fluid intake section 11, and described self-oscillation nozzle 5 can butts, be positioned described location end face 141; One top pressure ring 2 is arranged on fluid intake section 11 1 sides near described body 1, described top pressure ring 2 has external screw thread 21, internal thread 131 by the 13 interior settings of described body 1 accommodating cavity, described top pressure ring 2 is fixedly connected with body 1, and the end of this top pressure ring 2 is resisted against described baffle 3, and successively baffle 3, impeller assembly 4 and self-oscillation nozzle 5 is pressed abd fixed in the accommodating cavity 13 of body 1.
Wherein, the internal diameter of the accommodating cavity 13 of described body 1 is greater than the external diameter of described baffle 3 and impeller assembly 4, and formation accumulator 6 between the periphery wall of the internal face of the accommodating cavity 13 of described body 1 and described baffle 3 and impeller assembly 4.Further, the perisporium of described accommodating cavity 13 is provided with the groove 132 of a ring hole enlargement, this groove 132 is positioned at described accumulator 6, described body 1 is provided with the oil filler point 15 that is connected with described groove 132, can be to accumulator 6 interior injection lubrication oil by this oil filler point 15, one oiling bolt 16 can screw hermetically in described oil filler point 15,15 of this oiling bolt 16 and oil filler points are provided with a seal washer 7, to prevent that lubrication oil from oozing out outside the body 1 by oil filler point 15 and mud is entered in the accumulator 6 by oil filler point 15.
Please cooperate referring to Fig. 2, Fig. 7 A, Fig. 7 B, Fig. 8 A, Fig. 8 B, wherein, Fig. 2 is the local enlarged diagram at A place among Fig. 1; Fig. 7 A is the structural representation of the axle sleeve of hydraulic pulse cavitating jet generation device of the present invention; Fig. 7 B is the cross-sectional schematic of axle sleeve; Fig. 8 A is the structural representation of the impeller base of hydraulic pulse cavitating jet generation device of the present invention; Fig. 8 B is the cross-sectional schematic of impeller base.
As shown in the figure, the sidewall of described impeller base 43 is provided with two opposed through shaft holes 46, and the longitudinal axis of the axis of described axis hole 46 and described accommodating cavity 13 is perpendicular, and described axis hole 46 forms outer dia greater than the shoulder hole of inside diameter.The two ends of the impeller shaft 41 of impeller assembly 4 can be arranged in the axis hole 46 rotationally by axle sleeve 42, and described axle sleeve 42 is arranged in the axle sleeve containing hole 461 that the outside large diameter hole by described shoulder hole consists of.Further, see also Fig. 2, described axle sleeve 42 is provided with combined seal ring 8 between the medial surface 425 of body 1 accommodating cavity 13 centers one side and described impeller base 43, namely be provided with combined seal ring 8 between the cascaded surface 462 of described axle sleeve 42 and described shoulder hole.By combined seal ring 8, can strengthen the mutual sealing effectiveness of axle sleeve 42, impeller base 43 and impeller shaft 41, prevent that mud from entering, avoid axle sleeve 42, impeller base 43 and impeller shaft 41 stuck and affect work by mud, also be convenient to the maintain and replace of each component in the impeller assembly 4 simultaneously.
Continuing sees also Fig. 7 A-8B, is provided with internal thread 463 in the axle sleeve containing hole 461 that arranges on the described rachis seat 43, and described axle sleeve 42 is provided with external screw thread 421, and by this external screw thread 421, internal thread 463, described axle sleeve 42 is fixedly connected with described impeller base 43.For the ease of described axle sleeve 42 is screwed in axle sleeve containing hole 461, at least one groove 422 can be set at the lateral surface 424 of described axle sleeve 42, shown in Fig. 7 A, 7B, be provided with four grooves 422, with convenient working in the present embodiment.By operation tool (as: spanner, conversion rotating tool etc.) is entrenched in the groove 422, can easily described axle sleeve 42 be combined in the described impeller base 43, and make the medial surface 425 of axle sleeve 42 compress described combined seal ring 8.In addition, the endoporus 423 of axle sleeve 42 supports impeller shaft 41 rotations and carries lubrication oil to it.
Fig. 5 A is that the baffle upper surface gasket seal master of hydraulic pulse cavitating jet generation device of the present invention looks schematic diagram; Fig. 5 B is the cross-sectional schematic of baffle upper surface gasket seal; Fig. 6 A is that the baffle lower surface gasket seal master of hydraulic pulse cavitating jet generation device of the present invention looks schematic diagram; Fig. 6 B is the cross-sectional schematic of baffle lower surface gasket seal.Please cooperate referring to Fig. 1, Fig. 5 A, Fig. 5 B, Fig. 6 A, Fig. 6 B, between the upper surface of top pressure ring 2 and baffle 3, be provided with baffle upper surface gasket seal 71, between the impeller base 43 of the lower surface of baffle 3 and impeller assembly 4, be provided with baffle lower surface gasket seal 72, between the impeller base 43 of described impeller assembly 4 and self-oscillation nozzle 5 and self-oscillation nozzle 5 and location end face 141, be respectively equipped with gasket seal 73.By gasket seal 7,71,72,73 is set, can make each parts in the accommodating cavity 13 that is arranged on body 1 consist of each other closely connection, improve its sealing effectiveness, prevent that effectively mud from entering between baffle 3, impeller assembly 4, vibration nozzle 5 and the body 1, thereby make baffle 3, impeller assembly 4, the self-oscillation nozzle 5 at work can be not stuck with body, being convenient to each component needs maintain and replace.Wherein, each gasket seal 7,71,72,73 size, shape match with its set position component shape.
Further, in the above-described embodiment, to have good location in order making between impeller base 43 and the self-oscillation nozzle 5, preferably to form a reducing diameter part 431 at the described impeller base 43 towards fluid issuing section 12 1 sides, this reducing diameter part 431 can be embedded in the described self-oscillation nozzle 5.
In addition, see also Fig. 4 A, 4B, the lateral surface of top pressure ring 2 (namely, on a side of fluid intake section 11) be provided with screw 22, by this screw 22, can be convenient to the assembly and disassembly of top pressure ring 2, can make simultaneously baffle 3, impeller assembly 4, vibration nozzle 5 and body 1 being connected in the axial direction more tight, compress the gasket seal 71,72,73 that arranges between each parts, improve its sealing performance.
Please cooperate referring to Fig. 1, the waterpower pulse cavitation jet well drilling device that the present invention proposes, wherein the drilling liquid flow of the continuous-flow in drill collar (or mud motor) enters diversion division 3 through fluid intake section 11, the top pressure ring 2 of body 1 one ends, impeller assembly 4 is produced tangential force forces its inner impeller 44 High Rotation Speeds to change flow area to produce pulse, the drilling fluid of continuous-flow produces after the pulse through 5 high-speed jets of self-oscillation nozzle, and enter drill bit by body 1 other end fluid issuing section 12, to realize the function of drilling well.In addition, the waterpower pulse cavitation jet device that the present invention proposes, consisted of accumulator 6 between the accommodating cavity 13 of its body 1 and impeller assembly 4 and the baffle 3, and the baffle upper surface gasket seal 71 that arranges between top pressure ring 2 and the baffle 3, the baffle lower surface gasket seal 72 of the setting of baffle 3 and impeller base 43, the gasket seal 73 that impeller base 43 and self-oscillation nozzle 5 arrange, the gasket seal 73 that arranges between self-oscillation nozzle 5 and the body location end face 141 has consisted of static seal, and the combined seal ring 8 that arranges between impeller shaft 41 and the impeller base 43 has consisted of movable sealing, thereby can prevent that mud enters into baffle 3 in the drilling process, between the accommodating cavity 13 of the outer wall of impeller assembly 4 and self-oscillation nozzle 5 and body 1, and can be to being arranged on each the parts periphery wall in the accommodating cavity 13 by the lubrication oil of accumulator 6, and axle sleeve 42 and impeller shaft 41, carry out good lubricating between the axle sleeve containing hole 461 of impeller base 43, effectively overcome the mutual stuck situation of the component that cause owing to reasons such as mud enter in the known technology, be convenient to dismounting maintenance and the replacing of this device, greatly reduce use cost.When the drilling fluid that enters from fluid entrance 11 impacts impeller 44 and is with impeller shaft 41 to run up, lubrication oil in the accumulator 6 can well lubricate by 423 pairs of impeller shafts 41 of endoporus of axle sleeve 42, reduce the wearing and tearing of impeller shaft 41 when running up, prolonged the application life of impeller shaft 41, and then guaranteed that hydraulic pulse cavitating jet generation device is in the safety of underground work.
The above only is the schematic specific embodiment of the present invention, is not to limit scope of the present invention.Any those skilled in the art, the equivalent variations of having done under the prerequisite that does not break away from design of the present invention and principle and modification all should belong to the scope of protection of the invention.

Claims (9)

1. hydraulic pulse cavitating jet generation device, comprise: a hollow columnar body, one end of described body is the fluid intake section, the other end is the fluid issuing section, between described fluid intake section and fluid issuing section, consist of accommodating cavity, be provided with successively baffle, impeller assembly and self-oscillation nozzle in it; Described impeller assembly has impeller base, impeller and described impeller is hubbed on impeller shaft on the described impeller base; It is characterized in that, described accommodating cavity is provided with a ring flange near fluid issuing section one side, and described flange consists of the location end face towards the one side of described fluid intake section, and described self-oscillation nozzle can butt, be positioned described location end face; One top pressure ring is arranged on fluid intake section one side near described body, is threaded connection and is resisted against described baffle with the accommodating cavity of described body; The internal diameter of described accommodating cavity is greater than the external diameter of described baffle and described impeller assembly, and forms accumulator between the periphery wall of the internal face of described accommodating cavity and described baffle and described impeller assembly; The perisporium of described accommodating cavity is provided with the groove of a ring hole enlargement, and described groove is positioned at described accumulator, and described body is provided with the oil filler point that is connected with described groove, and an oiling bolt can screw hermetically in described oil filler point; The sidewall of described impeller base is provided with two opposed through shaft holes, and the axis of described axis hole and the longitudinal axis of described accommodating cavity are perpendicular, and described axis hole forms outer dia greater than the shoulder hole of inside diameter; The two ends of described impeller shaft can be arranged in the described axis hole rotationally by axle sleeve, and described axle sleeve is arranged in the axle sleeve containing hole that the outside large diameter hole by described shoulder hole consists of; Be provided with combined seal ring between the cascaded surface of described axle sleeve and described shoulder hole.
2. hydraulic pulse cavitating jet generation device as claimed in claim 1 is characterized in that, is equipped with gasket seal between described top pressure ring, baffle, impeller assembly, self-oscillation nozzle, the location end face.
3. hydraulic pulse cavitating jet generation device as claimed in claim 1 or 2 is characterized in that, described axle sleeve containing hole is provided with internal thread, and described axle sleeve is provided with external screw thread, is fixedly connected with described impeller base by the described axle sleeve of this internal and external screw thread.
4. hydraulic pulse cavitating jet generation device as claimed in claim 1 or 2 is characterized in that, the lateral surface of described axle sleeve is provided with at least one groove, by described groove described axle sleeve is combined in the described impeller base, and compresses described combined seal ring.
5. hydraulic pulse cavitating jet generation device as claimed in claim 3 is characterized in that, the lateral surface of described axle sleeve is provided with at least one groove, by described groove described axle sleeve is combined in the described impeller base, and compresses described combined seal ring.
6. hydraulic pulse cavitating jet generation device as claimed in claim 1 or 2 is characterized in that, has a reducing diameter part towards the described impeller base of described fluid issuing section one side, and described reducing diameter part can be embedded in the described self-oscillation nozzle.
7. hydraulic pulse cavitating jet generation device as claimed in claim 3 is characterized in that, has a reducing diameter part towards the described impeller base of described fluid issuing section one side, and described reducing diameter part can be embedded in the described self-oscillation nozzle.
8. hydraulic pulse cavitating jet generation device as claimed in claim 4 is characterized in that, has a reducing diameter part towards the described impeller base of described fluid issuing section one side, and described reducing diameter part can be embedded in the described self-oscillation nozzle.
9. hydraulic pulse cavitating jet generation device as claimed in claim 5 is characterized in that, has a reducing diameter part towards the described impeller base of described fluid issuing section one side, and described reducing diameter part can be embedded in the described self-oscillation nozzle.
CN 201010141190 2010-04-06 2010-04-06 Hydraulic pulse cavitating jet generation device Active CN101824965B (en)

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CN102133562B (en) * 2011-01-28 2012-09-26 重庆大学 Multifunctional self-excited oscillation abrasive water jet generating device
CN103280213B (en) * 2013-06-27 2014-09-24 陕西师范大学 Turbulence resonance fluid sounder
CN106468139A (en) * 2015-08-21 2017-03-01 中国石油化工股份有限公司 A kind of waterpower pulse drilling rig and the method for designing of this device
CN106812462B (en) * 2016-12-28 2018-12-28 倪红坚 A kind of multidimensional percussion drilling tool
CN109550604B (en) * 2019-01-16 2020-07-10 武汉大学 Self-excitation blocking type pulse jet generating device

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Inventor after: Li Gensheng

Inventor after: Shi Huaizhong

Inventor after: Shen Ruichen

Inventor after: He Aiguo

Inventor after: Niu Jilei

Inventor after: Huang Zhongwei

Inventor after: Tian Shouceng

Inventor before: Li Gensheng

Inventor before: Shi Huaizhong

Inventor before: Shen Ruichen

Inventor before: Niu Jilei

Inventor before: Huang Zhongwei

Inventor before: Tian Shouceng

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