CN113684831B - Controllable bidirectional grout stopping device for sleeve valve pipe - Google Patents
Controllable bidirectional grout stopping device for sleeve valve pipe Download PDFInfo
- Publication number
- CN113684831B CN113684831B CN202110866121.4A CN202110866121A CN113684831B CN 113684831 B CN113684831 B CN 113684831B CN 202110866121 A CN202110866121 A CN 202110866121A CN 113684831 B CN113684831 B CN 113684831B
- Authority
- CN
- China
- Prior art keywords
- grout stopping
- sleeve valve
- circular truncated
- truncated cone
- sliding block
- 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.)
- Active
Links
- 239000011440 grout Substances 0.000 title claims abstract description 79
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 19
- 239000002184 metal Substances 0.000 claims abstract description 53
- 229920002635 polyurethane Polymers 0.000 claims abstract description 45
- 239000004814 polyurethane Substances 0.000 claims abstract description 45
- 229910000831 Steel Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 9
- 229920003023 plastic Polymers 0.000 claims description 4
- 239000004033 plastic Substances 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 3
- 230000005298 paramagnetic effect Effects 0.000 claims description 3
- 239000000853 adhesive Substances 0.000 claims description 2
- 230000001070 adhesive effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 7
- 238000007569 slipcasting Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 2
- 239000002002 slurry Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 239000010985 leather Substances 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920003225 polyurethane elastomer Polymers 0.000 description 2
- 230000002787 reinforcement Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007596 consolidation process Methods 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D15/00—Handling building or like materials for hydraulic engineering or foundations
- E02D15/02—Handling of bulk concrete specially for foundation or hydraulic engineering purposes
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention discloses a controllable bidirectional grout stopping device for a sleeve valve tube, which comprises a circular truncated cone metal sliding block, a polyurethane grout stopping plug, an annular sucker electromagnet, a limit stop and a reset spring group, wherein when the annular sucker electromagnet is electrified, the circular truncated cone metal sliding block is attracted to the annular sucker electromagnet under the action of electromagnetic force, so that the polyurethane grout stopping plug is extruded to force a cantilever of the polyurethane grout stopping plug to deform, the polyurethane grout stopping plug wedges the sleeve valve tube, and meanwhile, the reset spring group is elongated; when the annular sucker electromagnet is powered off, the circular truncated cone metal sliding block rebounds, and meanwhile, the reset spring group recovers deformation, so that the circular truncated cone metal sliding block is assisted to be separated from the polyurethane grout stopping plug, and the grout stopping plug recovers deformation and is separated from the sleeve valve pipe wall. This application ends thick liquid device and can open and shut by artificial control to guarantee to transfer smoothly, promote the slip casting ware, improve the stability of slip casting efficiency and slip casting effect.
Description
Technical Field
The invention belongs to the technical field of civil engineering, and particularly relates to a controllable bidirectional grout stopping device for a sleeve valve pipe.
Background
The sleeve valve pipe grouting method is a grouting method developed and researched by Soletanoche basic engineering company of France, and is internationally acknowledged to be reliable. The method is applied to infiltration grouting of a gravel layer and a sand-gravel layer, soft soil splitting grouting and deep soil body splitting grouting at the end of the 80 th 20 th century in China. Because the sleeve valve pipe grouting has good effects of reinforcement, seepage prevention, leakage stoppage and the like, the sleeve valve pipe grouting method is widely applied to projects such as foundation pit curtains, soft soil roadbed reinforcement and the like.
The basic process and principle of sleeve valve tube grouting are as follows: the slurry is pressurized by the grouting pump and then enters the grouting pipe through the communicating pipe, and after the slurry is gathered to the grouting pipe section position of the sleeve valve pipe, the slurry expands the rubber ring wrapped outside the sleeve valve pipe and crushes the sleeve shell material under the pressure action through the sleeve valve pipe with the slurry discharge hole with the diameter of 8 mm. When the pressure is gradually increased to a certain degree, the pressurized slurry can generate filling, infiltration, compaction, splitting flow and condensation along the stratum structure to form a consolidation body, thereby reinforcing the soil body.
Compared with other grouting methods, the sleeve valve pipe grouting system is provided with an upper grout stopping plug and a lower grout stopping plug, grout can be limited in any section for grouting, and therefore segmented grouting can be achieved; the grouting device can freely move in the sleeve valve pipe, and repeatedly performs grouting in a grouting area as required; therefore, the grout stopping plug is an important link influencing the grouting function of the sleeve valve pipe. The grouting device commonly used for sleeve valve pipes in the market at present adopts a polyurethane (rubber) sealing ring grout stop plug, the polyurethane sealing ring can effectively play a sealing role under slight pressure in the grouting process, and the two commonly used specifications are a leather cup type bidirectional grout stop plug and a step type grout stop plug. However, the slurry stop plug of the polyurethane (rubber) sealing ring has certain disadvantages, the grouting pressure is often higher when grouting is carried out on clay or medium-fine sand and other strata, when the grouting pressure is more than 2MPa, the leather cup type slurry stop plug is easy to turn over or be pulled off in the pipe lifting process, so that the leather cups are connected in series, the slurry stop plug cannot reset, the phenomenon that the slurry stop plug clamps the pipe is caused, and the pipe lifting is very difficult; for some deep hole grouting, because the grouting device is deeply lowered, an injector effect is formed under the action of grouting pressure, and the pipe lifting is difficult; at this time, if a large lifting force is adopted, the threaded connection part of the floral tube can be disjointed, and finally the floral tube and the grouting tube are scrapped.
Disclosure of Invention
Aiming at the problems in the prior art, the invention aims to provide a controllable bidirectional grout stopping device for sleeve valve pipes, which can be manually controlled to open and close, so that smooth downward placement and lifting of a grouting device are ensured, and the grouting efficiency and the stability of the grouting effect are improved.
In order to achieve the purpose, the technical scheme of the application is as follows: a controllable bidirectional grout stopping device for a sleeve valve tube comprises a circular truncated cone metal sliding block, a polyurethane grout stopping plug, annular sucker electromagnets, a limit stop and a reset spring set, wherein the annular sucker electromagnets are symmetrically arranged on a grouting core tube, the annular sucker electromagnets are connected with a battery pack and an electromagnet switch on the outer side through lead wires, and the polyurethane grout stopping plug is fixed on the annular sucker electromagnets through an adhesive; when the annular sucker electromagnet is powered on, under the action of electromagnetic force, the circular truncated cone metal sliding block is sucked to the annular sucker electromagnet, so that the polyurethane grout stopping plug is extruded to force the cantilever to deform, the sleeve valve pipe is wedged, and meanwhile, the reset spring group is stretched; when the annular sucker electromagnet is powered off, the circular truncated cone metal sliding block rebounds, and meanwhile, the reset spring group recovers deformation, so that the circular truncated cone metal sliding block is assisted to be separated from the polyurethane grout stopping plug, and the grout stopping plug recovers deformation and is separated from the sleeve valve pipe wall.
Furthermore, the lead is fixed at the position of the outer wall of the grouting steel perforated pipe without a slurry leakage hole and is protected by a waterproof buckle strip.
Furthermore, the outer side of the polyurethane grout stop plug is wedge-shaped, and the outer diameter D1 of the polyurethane grout stop plug is smaller than the inner diameter D0 of the sleeve valve pipe; the polyurethane grout stopper is provided with a hollow structure, and the inner diameter D2 of the hollow structure is slightly smaller than the outer diameter D of the annular sucker electromagnet.
Further, the polyurethane grout stop plug is provided with a groove through a lower convex structure, and the diameter of the groove is D3.
Further, the round table metal sliding block is made of a middle hollow paramagnetic metal material, and the inner diameter D5 of the hollow part is slightly larger than the outer diameter D4 of the grouting steel perforated pipe.
Furthermore, the top outer diameter of the circular truncated cone metal slider is B1, the bottom outer diameter of the circular truncated cone metal slider is B2, and B1 is more than D3 and more than B2.
Furthermore, the limit stop is a cylindrical metal ring with a hollow-out middle part, the outer diameter of the metal ring is the same as that of the bottom of the circular truncated cone metal sliding block, and the inner diameter of the metal ring is the same as that of the annular sucker electromagnet.
As a further step, the limit stop is connected with the circular truncated cone metal sliding block through 4-6 groups of reset springs, and a plastic corrugated pipe protective sleeve is arranged on the periphery of each group of reset springs.
Furthermore, when the annular sucker electromagnet is powered off, the return spring group recovers deformation, and the circular truncated cone metal sliding block is assisted to be separated from the annular sucker electromagnet and the polyurethane grout stopping plug, so that the polyurethane grout stopping plug recovers deformation and is separated from the tube wall of the sleeve valve tube.
Due to the adoption of the technical scheme, the invention can obtain the following technical effects: before grouting of the sleeve valve pipe, the electromagnet switch is turned on, the circular truncated cone metal sliding block slides towards the annular sucker electromagnet direction under the action of electromagnetic attraction, the polyurethane grout stopping plug around the electromagnet is extruded, and the polyurethane grout stopping plug deforms under stress and clings to the inner wall of the sleeve valve pipe, so that the grout stopping effect is achieved; after grouting is finished, the electromagnet switch is turned off, the circular truncated cone metal sliding block is naturally disconnected with the annular sucker electromagnet, the circular truncated cone metal sliding block is separated from the polyurethane grout stop plug under the action of the reset spring group, and the polyurethane grout stop plug is restored to deform so as to be separated from the inner wall of the sleeve valve pipe; because can stop the opening and shutting of thick liquid stopper by artificial control, consequently there is not card pipe phenomenon to guarantee to transfer smoothly, promote the slip casting ware, improve the stability of slip casting efficiency and slip casting effect.
Drawings
FIG. 1 is a schematic view of a controllable bidirectional grout stopping device and a grouting steel perforated pipe in elevation;
FIG. 2 is a schematic view of the operation of the controllable bi-directional grout stopping device;
FIG. 3 is a schematic elevation view of a polyurethane grout stop plug;
FIG. 4 is a schematic plan view of a polyurethane grout stopper;
FIG. 5 is a schematic plan view of an annular chuck electromagnet;
FIG. 6 is a schematic elevation view of a circular truncated cone metal slider;
fig. 7 is a schematic plan view of a metal bump stop.
The sequence numbers in the figures illustrate: 1 sleeve valve tube; 2, grouting a core pipe; 3, grouting a steel floral tube; 4 annular sucking disc electromagnet; 5, polyurethane grout stopping plug; 6, a circular truncated cone metal sliding block; 7, a return spring group; 8 plastic corrugated pipe protective sleeve; 9 limit stop.
Detailed Description
The embodiments of the present invention are implemented on the premise of the technical solution of the present invention, and detailed embodiments and specific operation procedures are given, but the scope of the present invention is not limited to the following embodiments.
Example 1
The embodiment provides a controllable bidirectional grout stopping device for a sleeve valve pipe, as shown in fig. 1-7, a limit stop 9, a reset spring group 7, a circular truncated cone metal slide block 6, a polyurethane grout stopping plug and an annular sucker electromagnet 4 are sequentially arranged from two sides of a grouting steel perforated pipe 3 to the outside, and the annular sucker electromagnet 4 is connected with a 24V direct-current power supply and an electromagnet switch on the outer side through a lead; under the working state, the annular sucker electromagnet is connected with the corresponding circular truncated cone metal sliding block, one end of the circular truncated cone metal sliding block is pushed into the groove of the polyurethane grout stopping plug, so that the polyurethane grout stopping plug is in close contact with the pipe wall of the sleeve valve pipe, the other end of the circular truncated cone metal sliding block is connected with a limit stop through a reset spring set, and the limit stop is fixed on the grouting steel perforated pipe.
The annular sucker electromagnet 4 is a hollow annular cylinder, the inner diameter D' of the annular sucker electromagnet 4 is smaller than the outer diameter D4 of the grouting core pipe by 0.5mm (the numerical value is not absolute and can be adjusted according to specific use conditions), and the annular sucker electromagnet 4 is fixed on the grouting core pipe 2 through welding or bonding; the annular sucker electromagnet 4 is tightly wrapped by a polyurethane grout stop plug 5 with certain elasticity;
the outer side of the polyurethane grout stop plug 5 is wedge-shaped, and the outer diameter D1 is smaller than the inner diameter D0 of the sleeve valve tube 1 by 3mm (the numerical value is not absolute and can be adjusted according to specific use conditions); the inner side of the polyurethane grout stop plug is hollowed, and the inner diameter D2 is 0.5mm smaller than the outer diameter D of the annular sucker electromagnet (the numerical value is not absolute and can be adjusted according to specific use conditions); the polyurethane grout stopping plug is tightly wrapped on the outer side of the annular sucker electromagnet, a groove is formed in a cantilever at the lower side of the polyurethane grout stopping plug 5, and the diameter D3 of the groove is D +20mm (20mm is not absolute and can be adjusted according to specific use conditions); when the circular truncated cone metal slide block 6 moves upwards, the part protruding from the cantilever of the polyurethane grout stop plug 5 is pressed to deform and extrude to the pipe wall of the sleeve valve pipe;
the round table metal sliding block 6 is made of paramagnetic metal materials, the middle of the round table metal sliding block is hollowed, the outer diameter of the top of the round table is B1, the outer diameter of the bottom of the round table is B2, the height h is equal to the diameter of the round table, the diameter of the round table is matched with a polyurethane grout stop plug, B1 is D3-2mm, B2 is D3+6mm, and h is 35mm (2mm, 6mm and 35mm are not absolute and can be adjusted according to specific use conditions); the inner diameter D5 of the hollow part of the circular truncated cone metal slider 6 is D4+0.5mm (0.5mm is not absolute and can be adjusted according to specific use conditions);
the limit stop 9 is a hollow cylindrical metal ring fixed on the grouting steel floral tube 3, the outer diameter D6 of the metal ring is B2, and the inner diameter D7 of the metal ring is D'; the periphery of the limit stop 9 is connected with a circular truncated cone metal sliding block 6 through 4-6 groups of reset springs 7; above the bidirectional grout stop plug, a limit stop 9 supports a circular truncated cone metal sliding block 6 through a reset spring group 7; below the bidirectional grout stop plug, a limit stop 9 pulls the circular truncated cone metal sliding block 6 through a return spring group 7;
the reset spring group 7 is a thick spring with higher rigidity and is connected between the limit stop 9 and the circular truncated cone metal sliding block 6; when the annular sucker electromagnet 4 is electrified, under the action of electromagnetic force, the circular truncated cone metal sliding block 6 is sucked to the annular sucker electromagnet 4, so that the polyurethane grout stop plug 5 is extruded, a cantilever at the lower end of the grout stop plug 5 is forced to deform, the sleeve valve pipe 2 is wedged, and meanwhile, the reset spring group is elongated; when the annular sucker electromagnet 4 is powered off, the circular truncated cone metal sliding block 6 rebounds and separates, the return spring group 7 recovers deformation, and the circular truncated cone metal sliding block 6 is assisted to separate from the polyurethane grout stop plug 5, so that the grout stop plug 5 recovers deformation and separates from the tube wall of the sleeve valve tube 1; the plastic corrugated pipe protective sleeve 8 is sleeved outside each return spring 7 and used for preventing the grout limiting spring set 7 from returning.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (9)
1. A controllable bidirectional grout stopping device for sleeve valve pipes is characterized by comprising a circular truncated cone metal sliding block, a polyurethane grout stopping plug, annular sucking disc electromagnets, a limit stop and a reset spring group, wherein the annular sucking disc electromagnets are symmetrically arranged on a grouting core pipe and are connected with a battery pack and an electromagnet switch on the outer side through lead wires, and the polyurethane grout stopping plug is fixed on the annular sucking disc electromagnets through an adhesive; when the annular sucker electromagnet is powered on, under the action of electromagnetic force, the circular truncated cone metal sliding block is sucked to the annular sucker electromagnet, so that the polyurethane grout stopping plug is extruded to force the cantilever to deform, the sleeve valve pipe is wedged, and meanwhile, the reset spring group is stretched; when the annular sucker electromagnet is powered off, the circular truncated cone metal sliding block rebounds, and meanwhile, the reset spring group recovers deformation, so that the circular truncated cone metal sliding block is assisted to be separated from the polyurethane grout stopping plug, and the grout stopping plug recovers deformation and is separated from the sleeve valve pipe wall.
2. The controllable bidirectional grout stop device for sleeve valve pipe according to claim 1, wherein the lead is fixed at the position of the outer wall of the grouting steel perforated pipe without a grout leakage hole and is protected by a waterproof buckle strip.
3. The controllable bidirectional grout stopping device for sleeve valve pipe according to claim 1, wherein the outer side of the polyurethane grout stopping plug is wedge-shaped, and the outer diameter D1 of the polyurethane grout stopping plug is smaller than the inner diameter D0 of the sleeve valve pipe; the polyurethane grout stopper is provided with a hollow structure, and the inner diameter D2 of the hollow structure is slightly smaller than the outer diameter D of the annular sucker electromagnet.
4. The controllable two-way grout stopping device for sleeve valve pipe according to claim 1 or 3, wherein the polyurethane grout stopping plug is provided with a groove formed by a downward convex structure, and the diameter of the groove is D3.
5. The controllable bidirectional grout stopping device for a sleeve valve pipe as claimed in claim 1, wherein said circular truncated cone metal slider is a hollow paramagnetic metal material, and the inner diameter D5 of said hollow part is slightly larger than the outer diameter D4 of said steel grouting flower pipe.
6. The controllable bidirectional grout stopping device for a sleeve valve pipe as claimed in claim 4, wherein the top outer diameter of the circular truncated metal slider is B1, the bottom outer diameter is B2, and B1< D3< B2.
7. The controllable bidirectional grout stopping device for the sleeve valve pipe according to claim 1, wherein the limit stop is a hollow cylindrical metal ring, the outer diameter of the metal ring is the same as that of the bottom of the circular truncated cone metal sliding block, and the inner diameter of the metal ring is the same as that of the annular sucker electromagnet.
8. The controllable bidirectional grout stopping device for the sleeve valve pipe according to claim 1, wherein the limit stop is connected with the circular truncated cone metal sliding block through 4-6 groups of return springs, and a plastic corrugated pipe protective sleeve is arranged on the periphery of each group of return springs.
9. The controllable bidirectional grout stopping device for the sleeve valve tube according to claim 1, wherein when the annular sucker electromagnet is powered off, the return spring set restores to deform, and the circular truncated cone metal sliding block is assisted to be separated from the annular sucker electromagnet and the polyurethane grout stopping plug, so that the polyurethane grout stopping plug restores to deform and is separated from the tube wall of the sleeve valve tube.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110501746 | 2021-05-08 | ||
| CN2021105017460 | 2021-05-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113684831A CN113684831A (en) | 2021-11-23 |
| CN113684831B true CN113684831B (en) | 2022-07-08 |
Family
ID=78578291
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110866121.4A Active CN113684831B (en) | 2021-05-08 | 2021-07-29 | Controllable bidirectional grout stopping device for sleeve valve pipe |
| CN202121746986.9U Active CN215562627U (en) | 2021-05-08 | 2021-07-29 | Manually-controllable sleeve valve pipe bidirectional grout stopping device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121746986.9U Active CN215562627U (en) | 2021-05-08 | 2021-07-29 | Manually-controllable sleeve valve pipe bidirectional grout stopping device |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN113684831B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2503795C1 (en) * | 2012-10-25 | 2014-01-10 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Installation method of cement bridge in well under intake formation |
| CN105696598A (en) * | 2016-01-29 | 2016-06-22 | 山东大学 | Device suitable for elevation-angle grouting of sleeve valve pipe and using method thereof |
| CN108915634A (en) * | 2018-02-01 | 2018-11-30 | 四川省铁路建设有限公司 | One kind being based on the closed injected hole sectioning of electromagnetism |
| CN109098687A (en) * | 2018-10-11 | 2018-12-28 | 中国石油大学(华东) | Single stop grouting plug retrusive sublevel grouting device and method suitable for crack rock |
| CN209277160U (en) * | 2018-09-10 | 2019-08-20 | 河南理工大学 | A kind of inflatable stop grouting plug for sleeve valve barrel grouting |
-
2021
- 2021-07-29 CN CN202110866121.4A patent/CN113684831B/en active Active
- 2021-07-29 CN CN202121746986.9U patent/CN215562627U/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2503795C1 (en) * | 2012-10-25 | 2014-01-10 | Открытое акционерное общество "Татнефть" имени В.Д. Шашина | Installation method of cement bridge in well under intake formation |
| CN105696598A (en) * | 2016-01-29 | 2016-06-22 | 山东大学 | Device suitable for elevation-angle grouting of sleeve valve pipe and using method thereof |
| CN108915634A (en) * | 2018-02-01 | 2018-11-30 | 四川省铁路建设有限公司 | One kind being based on the closed injected hole sectioning of electromagnetism |
| CN209277160U (en) * | 2018-09-10 | 2019-08-20 | 河南理工大学 | A kind of inflatable stop grouting plug for sleeve valve barrel grouting |
| CN109098687A (en) * | 2018-10-11 | 2018-12-28 | 中国石油大学(华东) | Single stop grouting plug retrusive sublevel grouting device and method suitable for crack rock |
Non-Patent Citations (1)
| Title |
|---|
| 袖阀管注浆法加固用于桥梁浅基础研究;姜明君;《建筑与预算》;20140330(第3期);第72-77页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113684831A (en) | 2021-11-23 |
| CN215562627U (en) | 2022-01-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109209305B (en) | Intelligent plunger drainage and production device for gas well and construction method | |
| CN104213861A (en) | Expansion tube expansion technological method and tool system | |
| CN204024576U (en) | A kind of packer | |
| CN113684831B (en) | Controllable bidirectional grout stopping device for sleeve valve pipe | |
| CN204041033U (en) | Rear-mounted throttle for natural gas well | |
| CN203081398U (en) | Hydraulic setting type small-drift-diameter oil pipe bridge plug | |
| CN206737855U (en) | A kind of new well completion packer slips | |
| CN217632381U (en) | Controllable plunger for drainage and gas production of gas well based on digital oil field construction | |
| CN216665559U (en) | Mechanical deblocking recyclable packer | |
| CN201460802U (en) | Insertion pipe packer | |
| CN110593826A (en) | Adjustable underground throttle based on magnetorheological elastic rubber salvageable air faucet | |
| CN2903353Y (en) | Washing well packer | |
| CN2773305Y (en) | Hydraulic self sealing hole stopper with position concerned releasement | |
| CN112943143B (en) | Hydraulic salvaging pipe column and salvaging method for coiled tubing of downhole choke | |
| CN212835400U (en) | Pile foundation post-grouting device | |
| CN109403910B (en) | A kind of big orifice oil pipe multistage inflatable packer | |
| CN211851767U (en) | Electric control packer | |
| CN212225163U (en) | Mechanical compression type tubular column switch type packer | |
| CN204283318U (en) | High temperature high voltage resistant tubing packer | |
| CN203879448U (en) | Casing protected gas injection packer for CO2 injection well | |
| CN202220580U (en) | Combined injection tool for external casing packer | |
| CN208294491U (en) | A kind of pilot packer step by step | |
| CN107060677B (en) | Oil gas reservoir acidizing is low frequency hydraulic pulsation generating device in pit | |
| CN201916170U (en) | Oil-well pump | |
| CN2898511Y (en) | Safety valve of warehouse |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |