CN110318754A - With the splitting stick that structure is connected in series - Google Patents
With the splitting stick that structure is connected in series Download PDFInfo
- Publication number
- CN110318754A CN110318754A CN201910654224.7A CN201910654224A CN110318754A CN 110318754 A CN110318754 A CN 110318754A CN 201910654224 A CN201910654224 A CN 201910654224A CN 110318754 A CN110318754 A CN 110318754A
- Authority
- CN
- China
- Prior art keywords
- oiler
- splitting
- cavity
- splitting stick
- stick
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 208000002925 dental caries Diseases 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 claims description 3
- 239000003921 oil Substances 0.000 abstract description 30
- 239000011435 rock Substances 0.000 abstract description 18
- 239000010720 hydraulic oil Substances 0.000 abstract description 4
- 238000003776 cleavage reaction Methods 0.000 abstract description 2
- 230000007017 scission Effects 0.000 abstract description 2
- 230000001360 synchronised effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 3
- 238000005422 blasting Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 241000580063 Ipomopsis rubra Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C37/00—Other methods or devices for dislodging with or without loading
- E21C37/06—Other methods or devices for dislodging with or without loading by making use of hydraulic or pneumatic pressure in a borehole
- E21C37/08—Devices with pistons, plungers, or the like, pressed locally against the wall of the borehole
Abstract
The invention belongs to the technical fields of rock cleavage, more particularly to the splitting stick that structure is connected in series.The splitting stick ontology is equipped with multiple cavitys for being used to install piston, and the piston divides the cavity into the first cavity and the second cavity, the second oiler for being additionally provided with the first oiler being connected to the first cavity on the both ends of the splitting stick and being connected to the second cavity.It increases quick coupling and connecting pipe, it connects multiple splitting stick ontologies by quick coupling and realizes series connection, and the first oiler of multiple splitting stick ontologies is set to be interconnected by connecting pipe, second oiler is interconnected, it realizes series connection rear oil duct connection, hydraulic oil is passed through by the first oiler to side or the second oiler can be realized control is synchronized to the piston on all splitting sticks being cascaded.Using simple structure, the series connection of multiple splitting sticks is realized.
Description
[technical field]
The invention belongs to the technical fields of rock cleavage, more particularly to the splitting stick that structure is connected in series.
[background technique]
It is most of that detritus is carried out using blasting method in traditional rock and mining.But with China's economy
Development, environmental protection and the security consideration of construction personnel are very strict to the control of explosion, need qualified professional explosion qualification
Company just can be carried out bursting work, cause blasting cost increasingly to skyrocket.
And occur the means of non-explosion detritus now, for example be power using hydraulic system using splitting stick, it will cleave
Stick is put into the preparatory blind hole of rock, and the piston ejection cleaved on stick is acted on to the inner wall of rock by hydraulic power
On, so that rock splits rock effect from internal fragmentation, to realize.
But due to the limited length for cleaving stick, larger deeper big rock needs are just able to achieve several times and split rock, nothing
Method realizes deep hole fracturing, leads to inefficiency.
[summary of the invention]
To solve the problems, such as that the limited length for cleaving stick in the prior art cannot achieve deep hole fracturing, the present invention provides bands
There is the splitting stick that structure is connected in series.
The present invention is achieved by the following technical solutions:
Multiple be used for is equipped with the splitting stick that structure is connected in series, including splitting stick ontology, the splitting stick ontology
The cavity of piston is installed, the piston divides the cavity into the first cavity and the second cavity, is additionally provided on the both ends of the splitting stick
The first oiler being connected to the first cavity and the second oiler being connected to the second cavity, from the first oiler oil inlet
When, move the piston into cavity, it is outer and from splitting from when the second oiler oil inlet, making the piston extend out to cavity
Split the stretching of stick body surface；
It is additionally provided with connection structure on the both ends of the splitting stick ontology, and further includes with the splitting stick that structure is connected in series
The quick coupling of connection structure and for splitting described in connecting two on splitting stick ontology opposing end surface described in connecting two
Split the connecting pipe of the first oiler and the second oiler opposite on stick ontology opposing end surface.
Splitting stick as described above with series connection structure, the quick coupling include for cleaving stick sheet with side
The first connecting portion of connection structure connection on body, the second connection being connect with the connection structure on other side splitting stick ontology
The soft interconnecting piece of portion and the connection first connecting portion and second connecting portion.
Splitting stick as described above with series connection structure, the connection structure cleaved on stick ontology are hanging ring.
Splitting stick as described above with series connection structure, the first connecting portion and second connecting portion are buckle.
Splitting stick as described above with series connection structure, the first connecting portion and second connecting portion are rigid
Property part.
Splitting stick as described above with series connection structure, the connecting pipe are high-pressure oil pipe.
The end of splitting stick as described above with series connection structure, first oiler and the second oiler is set
There is screw connection structure, the both ends of the high-pressure oil pipe are equipped with threaded joints.
Splitting stick as described above with series connection structure, further includes for blocking first oiler and second
The block head of oiler.
Splitting stick as described above with series connection structure, the splitting stick ontology is equipped with and multiple first cavitys
Connection and the first oil duct being connected to the first oiler of two sides, be connected to multiple second cavitys and with the second oiler of two sides
Second oil duct of connection, is additionally provided with piston unt in first cavity, on the outside of the piston unt and in first cavity
Wall connects, and middle part, which is equipped with, leads to the through-hole that front end is crossed for the piston, between the piston unt outside and first cavity, lives
Sealing element is equipped between plug nut through hole and piston and between closeouts and the second cavity.
Compared with prior art, the present invention has the following advantages:
1, the present invention provides with the splitting stick that structure is connected in series, increase quick coupling and connecting pipe, make
Multiple splitting stick ontologies are connected by quick coupling realizes series connection, and makes the first of multiple splitting stick ontologies by connecting pipe
Oiler is interconnected, and the second oiler is interconnected, and realizes series connection rear oil duct connection, by the first oiler to side or
Second oiler, which is passed through hydraulic oil and can be realized, synchronizes control to the piston on all splitting sticks being cascaded.It utilizes
Simple structure realizes that the series connection of multiple splitting sticks realizes deep hole fracturing so as to increase connection length according to demand, so that
This product can be applicable in a fracturing of big rock, improve the efficiency of splitting rock.
[Detailed description of the invention]
To describe the technical solutions in the embodiments of the present invention more clearly, make required in being described below to embodiment
Attached drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, for
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings other
Attached drawing.
The connection schematic diagram of more piece splitting stick of Fig. 1 present invention with the splitting stick that structure is connected in series；
Fig. 2 is the portion the A enlarged drawing of Fig. 1；
Structural schematic diagram of Fig. 3 present invention with the splitting stick that structure is connected in series；
Fig. 4 is the portion the B enlarged drawing of Fig. 3.
[specific embodiment]
In order to which the technical problems, technical solutions and beneficial effects solved by the present invention is more clearly understood, below in conjunction with
Accompanying drawings and embodiments, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only used
To explain the present invention, it is not intended to limit the present invention.
The present invention is achieved by the following technical solutions:
As shown in Figures 1 to 4, with the splitting stick that structure is connected in series, including splitting stick ontology 1, the splitting stick sheet
Body 1 is equipped with multiple cavitys 101 for being used to install piston 2, and cavity 101 is divided into the first cavity 101a and second by the piston 2
Cavity 101b, be additionally provided on the both ends of the splitting stick 1 the first oiler 31 be connected to the first cavity 101a and with it is second empty
Second oiler 32 of chamber 101b connection moves the piston 2 into cavity 101 from when 31 oil inlet of the first oiler,
It is outer and stretched out from splitting 1 surface of stick ontology from when 32 oil inlet of the second oiler, making the piston 2 extend out to cavity 101；
Connection structure 11 is additionally provided on the both ends of the splitting stick ontology 1, and the splitting stick with series connection structure is also
Including the quick coupling 4 of connection structure 11 on splitting 1 opposing end surface of stick ontology described in connecting two and for connecting two
The connecting pipe 5 of opposite the first oiler 31 and the second oiler 32 on splitting 1 opposing end surface of stick ontology.The present invention
It provides with the splitting stick that structure is connected in series, increases quick coupling and connecting pipe, keep multiple splitting stick ontologies logical
It crosses quick coupling connection and realizes series connection, and so that the first oiler of multiple splitting stick ontologies is interconnected by connecting pipe,
Second oiler is interconnected, and realizes series connection rear oil duct connection, is passed through by the first oiler to side or the second oiler
Hydraulic oil, which can be realized, synchronizes control to the piston on all splitting sticks being cascaded.It is real using simple structure
The series connection of existing multiple splitting sticks realizes deep hole fracturing, so that this product can be applicable to so as to increase connection length according to demand
In fracturing of big rock, the efficiency of splitting rock is improved.
Further, the quick coupling 4 includes for connecting with the connection structure 11 on side splitting stick ontology 1
Described in one interconnecting piece 41, the second connecting portion 42 and connection that are connect with the connection structure 11 on other side splitting stick ontology 1
The soft interconnecting piece 43 of first connecting portion 41 and second connecting portion 42.Keep two sides opposite with second connecting portion by first connecting portion
Splitting stick ontology connection, realize quickly connection, and soft interconnecting piece 43 ensure that two splitting stick ontologies connection after be it is non-rigid,
So that connecting and using more flexible.Moreover, passing through the setting of the quick coupling, so that quick coupling bears two splittings
The interaction force of stick is conducive to the normal use for protecting connecting pipe without acting in connecting pipe.And by soft
Property connection, be conducive to the fracturing hole for adapting to different straightness, efficiency is incremented by by the series connection splitting linear multiple of stick quantity.
Further, the connection structure 11 on the splitting stick ontology 1 is hanging ring.Its structure is simple, convenient for connection.And
And the first connecting portion 41 and second connecting portion 42 are buckle.Used buckle is quickly connect with hanging ring realization, rapid-assembling/disassembling,
It can directly be dismantled when being not required to be used in series, structure is simple, is easy to use.
Specifically, the first connecting portion 41 and second connecting portion 42 are rigid member.Be conducive to improve the strong of connection
Degree.
In addition, the connecting pipe 5 is high-pressure oil pipe.High-pressure oil pipe is the component part of high-pressure oil passage, it is desirable that oil pipe needs
It bears certain oil pressure and has certain fatigue strength, guarantee the seal request of pipeline.It can make mutually after guaranteeing connection
Oil communication on the splitting stick ontology of connection.
Further, the end of first oiler 31 and the second oiler 32 is equipped with screw connection structure, described
The both ends of high-pressure oil pipe are equipped with threaded joints.Its structure is simple, realizes fast sealing connection.
Moreover, further including the block head 6 for blocking first oiler 31 and the second oiler 32.The of side
When one oiler 31 and the second oiler 32 are not connected to high-pressure oil pipe, its closure is made using block head 6, in order to be passed through from side
Pressure oil can smoothly drive piston motion, ED plug can be used in block head 6 in the application.
Specifically, the splitting stick ontology 1 is equipped with and is connected to multiple first cavity 101a and enters oil with two sides first
First oil duct of 31 connection of mouth, the second oil for being connected to multiple second cavity 101b and being connected to the second oiler of two sides 32
Road, is additionally provided with piston unt 71 in the first cavity 101b, 71 outside of piston unt in the first cavity 101a
Wall connection, middle part, which is equipped with, leads to the through-hole that front end is crossed, 71 outside of piston unt and the first cavity 101a for the piston
Between, be equipped with sealing element between 71 through-hole of piston unt and piston and between closeouts 72 and the second cavity 101b.
The application course of work are as follows:
After drilling out blind hole on rock, multistage splitting stick ontology connection is made according to depth, first quick coupling is installed, then connects
Connecing high-pressure oil pipe makes the oil communication of multistage splitting stick ontology, and plug is mounted on the first oiler of the lowermost and second and enters oil
On mouth, first oiler and second entrance of the upper end are connect with hydraulic system.
Fracturing process: pressure oil is passed through to the second oiler, is flowed into the second cavity by the second oil duct, makes piston
Ejection, acting on rock inner wall makes its fracturing.
Removal process: being commutated by hydraulic system, is passed through pressure oil to the first oiler, keeps piston living in plunger shaft
It is dynamic, splitting stick can be taken out, complete the splitting of rock.
The present invention provides with the splitting stick that structure is connected in series, increases quick coupling and connecting pipe, make more
A splitting stick ontology is connected by quick coupling realizes series connection, and makes the first of multiple splitting stick ontologies to enter by connecting pipe
Hydraulic fluid port is interconnected, and the second oiler is interconnected, and realizes series connection rear oil duct connection, passes through the first oiler to side or the
Two oilers, which are passed through hydraulic oil and can be realized, synchronizes control to the piston on all splitting sticks being cascaded.Utilize letter
Single structure realizes that the series connection of multiple splitting sticks realizes deep hole fracturing so as to increase connection length according to demand, so that this
Product can be applicable in a fracturing of big rock, improve the efficiency of splitting rock.
It is the one or more embodiments provided in conjunction with particular content as described above, does not assert specific reality of the invention
It applies and is only limited to these instructions.It is all approximate with method of the invention, structure etc., identical, or for present inventive concept under the premise of
It makes several technologies to deduce, or replacement all should be considered as protection scope of the present invention.
Claims (9)
1. with the splitting stick that structure is connected in series, which is characterized in that including cleaving stick ontology (1), the splitting stick ontology (1)
Multiple cavitys (101) for being used to install piston (2) are equipped with, cavity (101) is divided into the first cavity (101a) by the piston (2)
With the second cavity (101b), it is described splitting stick (1) both ends on be additionally provided with the first oiler being connected to the first cavity (101a)
(31) and with the second cavity (101b) the second oiler (32) being connected to, it is described from making when the first oiler (31) oil inlet
Piston (2) movement into cavity (101), from when the second oiler (32) oil inlet, makes the piston (2) extend out to cavity
(101) it stretches out outside and from splitting stick ontology (1) surface；
It is additionally provided with connection structure (11) on the both ends of splitting stick ontology (1), and the splitting stick with series connection structure is also
Including the quick coupling (4) of connection structure (11) on splitting stick ontology (1) opposing end surface described in connecting two and it is used for
The connection of opposite the first oiler (31) and the second oiler (32) on splitting stick ontology (1) opposing end surface described in connection two
Pipeline (5).
2. according to claim 1 with the splitting stick that structure is connected in series, which is characterized in that the quick coupling (4)
It is cleaved including the first connecting portion (41) and the other side for being connect with the connection structure (11) in side splitting stick ontology (1)
The second connecting portion (42) of connection structure (11) connection on stick ontology (1) and the connection first connecting portion (41) and the
The soft interconnecting piece (43) of two interconnecting pieces (42).
3. according to claim 2 with the splitting stick that structure is connected in series, which is characterized in that the splitting stick ontology
(1) connection structure (11) on is hanging ring.
4. according to claim 3 with the splitting stick that structure is connected in series, which is characterized in that the first connecting portion
(41) and second connecting portion (42) is buckle.
5. according to claim 4 with the splitting stick that structure is connected in series, which is characterized in that first connection
Portion (41) and second connecting portion (42) are rigid member.
6. according to claim 1 with the splitting stick that structure is connected in series, which is characterized in that the connecting pipe (5)
For high-pressure oil pipe.
7. according to claim 6 with the splitting stick that structure is connected in series, which is characterized in that first oiler
(31) and the end of the second oiler (32) is equipped with screw connection structure, and the both ends of the high-pressure oil pipe are equipped with threaded joints.
8. according to claim 1 with the splitting stick that structure is connected in series, which is characterized in that further include for blocking
State the block head (6) of the first oiler (31) and the second oiler (32).
9. according to claim 1 with the splitting stick that structure is connected in series, which is characterized in that the splitting stick ontology
(1) it is equipped with the first oil duct for be connected to multiple first cavitys (101a) and being connected to the first oiler of two sides (31), and more
A the second oil duct second cavity (101b) connection and be connected to the second oiler of two sides (32), first cavity (101b)
It is inside additionally provided with piston unt (71), is connect on the outside of the piston unt (71) with the first cavity (101a) inner wall, middle part is set
Have and lead to the through-hole crossed of front end for the piston, on the outside of the piston unt (71) between first cavity (101a), piston
Nut (71) is equipped with sealing element between through-hole and piston.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910654224.7A CN110318754A (en) | 2019-07-19 | 2019-07-19 | With the splitting stick that structure is connected in series |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910654224.7A CN110318754A (en) | 2019-07-19 | 2019-07-19 | With the splitting stick that structure is connected in series |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110318754A true CN110318754A (en) | 2019-10-11 |
Family
ID=68124098
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910654224.7A Pending CN110318754A (en) | 2019-07-19 | 2019-07-19 | With the splitting stick that structure is connected in series |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110318754A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112862A (en) * | 2020-09-26 | 2020-12-22 | 宜宾学院 | Flexibly-connected rock splitting rod |
| CN112267883A (en) * | 2020-10-23 | 2021-01-26 | 林国丰 | Splitting rod for rock exploitation |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2229940B1 (en) * | 1972-06-20 | 1973-08-23 | Darda, Helmut, 7712 Blumberg | HYDRAULICALLY ACTUATED DEVICE FOR MECHANICAL DISASSEMBLY OF ROCK |
| KR19990078875A (en) * | 1999-08-16 | 1999-11-05 | 이상휴 | Oil Pressure Piston Type No-Vibration And No-Noise A Base Rock Splitter |
| KR200396386Y1 (en) * | 2005-07-02 | 2005-09-21 | 김정민 | A crusher |
| KR20090004601U (en) * | 2007-11-12 | 2009-05-15 | (주)한일씨알에스 | Hydraulic Rock Splitter |
| CN204476414U (en) * | 2015-02-04 | 2015-07-15 | 永州市鑫东森机械装备有限公司 | Splitting machine flexible damping device |
| CN204646238U (en) * | 2015-04-21 | 2015-09-16 | 重庆市博平液压机械有限公司 | The splitting rod of stone-splitter |
| CN204960935U (en) * | 2015-08-11 | 2016-01-13 | 江苏安能钻掘设备科技有限公司 | Formula hydraulic pressure division stick concatenates |
| CN106150499A (en) * | 2016-07-05 | 2016-11-23 | 重庆市博平液压机械有限公司 | Split splitting rod |
| CN206071970U (en) * | 2016-05-26 | 2017-04-05 | 广东南曦液压机械有限公司 | That realizes the isobaric output of multi-operating points automatically splits stone machine |
| CN107740691A (en) * | 2017-11-03 | 2018-02-27 | 吴淑瑜 | A kind of advance cutting hydraulic splitting machine for mine blasting |
| CN109488302A (en) * | 2018-11-20 | 2019-03-19 | 内蒙古伊泰广联煤化有限责任公司 | Splitting device and roadway floor pressure relief method |
| KR101969386B1 (en) * | 2017-11-16 | 2019-04-17 | 박진 | Splitting apparatus with extension member |
| CN210637075U (en) * | 2019-07-19 | 2020-05-29 | 湖南烈岩科技有限公司 | Splitting rod with series connection structure |
-
2019
- 2019-07-19 CN CN201910654224.7A patent/CN110318754A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2229940B1 (en) * | 1972-06-20 | 1973-08-23 | Darda, Helmut, 7712 Blumberg | HYDRAULICALLY ACTUATED DEVICE FOR MECHANICAL DISASSEMBLY OF ROCK |
| KR19990078875A (en) * | 1999-08-16 | 1999-11-05 | 이상휴 | Oil Pressure Piston Type No-Vibration And No-Noise A Base Rock Splitter |
| KR200396386Y1 (en) * | 2005-07-02 | 2005-09-21 | 김정민 | A crusher |
| KR20090004601U (en) * | 2007-11-12 | 2009-05-15 | (주)한일씨알에스 | Hydraulic Rock Splitter |
| CN204476414U (en) * | 2015-02-04 | 2015-07-15 | 永州市鑫东森机械装备有限公司 | Splitting machine flexible damping device |
| CN204646238U (en) * | 2015-04-21 | 2015-09-16 | 重庆市博平液压机械有限公司 | The splitting rod of stone-splitter |
| CN204960935U (en) * | 2015-08-11 | 2016-01-13 | 江苏安能钻掘设备科技有限公司 | Formula hydraulic pressure division stick concatenates |
| CN206071970U (en) * | 2016-05-26 | 2017-04-05 | 广东南曦液压机械有限公司 | That realizes the isobaric output of multi-operating points automatically splits stone machine |
| CN106150499A (en) * | 2016-07-05 | 2016-11-23 | 重庆市博平液压机械有限公司 | Split splitting rod |
| CN107740691A (en) * | 2017-11-03 | 2018-02-27 | 吴淑瑜 | A kind of advance cutting hydraulic splitting machine for mine blasting |
| KR101969386B1 (en) * | 2017-11-16 | 2019-04-17 | 박진 | Splitting apparatus with extension member |
| CN109488302A (en) * | 2018-11-20 | 2019-03-19 | 内蒙古伊泰广联煤化有限责任公司 | Splitting device and roadway floor pressure relief method |
| CN210637075U (en) * | 2019-07-19 | 2020-05-29 | 湖南烈岩科技有限公司 | Splitting rod with series connection structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112112862A (en) * | 2020-09-26 | 2020-12-22 | 宜宾学院 | Flexibly-connected rock splitting rod |
| CN112112862B (en) * | 2020-09-26 | 2022-08-02 | 宜宾学院 | Flexibly-connected rock splitting rod |
| CN112267883A (en) * | 2020-10-23 | 2021-01-26 | 林国丰 | Splitting rod for rock exploitation |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110318754A (en) | With the splitting stick that structure is connected in series | |
| CN106150499B (en) | Fission splitting stick | |
| CN108591170A (en) | A kind of hydraulic bidirectional splitting stick | |
| CN102927341B (en) | Wedged anti-rebound electric explosion valve | |
| CN104847304A (en) | Bridge plug setting tool | |
| SE9303375D0 (en) | Rotary screw compressor with variable thrust balancing means | |
| BR0213627A (en) | System and method for injecting gas into a hydrocarbon reservoir and method for manipulating production fluid | |
| WO2007146807A3 (en) | Pressurized fluid-based power system for devices, such as vehicle drivetrains | |
| CN206129739U (en) | Gas cylinder fatigue test hydraulic system | |
| CN202946477U (en) | Hydraulic oil cylinder and engineering machinery with the same | |
| MY185201A (en) | Tubing pressure insensitive pressure compensated actuator for a downhole tool and method | |
| CN210637075U (en) | Splitting rod with series connection structure | |
| CN104791214A (en) | Volumetric fluid pump allowing waste fluid energy to be used | |
| CN203856441U (en) | Under-pressure leakage blocking device applicable to petroleum and natural gas wellhead and conveying pipeline | |
| CN210978824U (en) | Reducing pipe connector | |
| CN111520076B (en) | High-voltage pulse energy-gathering jet flow generation system and use method thereof | |
| CN209887911U (en) | Two-way splitting rod driven by ultrahigh pressure water | |
| CN215408684U (en) | Backflow prevention device for coal mine grouting drilling | |
| CN102261536A (en) | Quick change connector device for hose assembly pressure test and hose assembly pressure test system | |
| CN201627712U (en) | Concrete piston universal connection device | |
| CN205875101U (en) | Water conservancy flashboard pulling apparatus | |
| CN206129743U (en) | A plurality of gas cylinder fatigue test hydraulic means | |
| CN204627536U (en) | Bridging plug setting tool | |
| CN206409363U (en) | Air compressor is vented valve bonnet | |
| CN103821791A (en) | Novel hydraulic oil cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |