CN102032446B - Quick assembly and disassembly type steel pipeline extrusion cut-off device - Google Patents

Quick assembly and disassembly type steel pipeline extrusion cut-off device Download PDF

Info

Publication number
CN102032446B
CN102032446B CN2010105504497A CN201010550449A CN102032446B CN 102032446 B CN102032446 B CN 102032446B CN 2010105504497 A CN2010105504497 A CN 2010105504497A CN 201010550449 A CN201010550449 A CN 201010550449A CN 102032446 B CN102032446 B CN 102032446B
Authority
CN
China
Prior art keywords
type steel
knife mouth
piston
steel pipe
base
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.)
Expired - Fee Related
Application number
CN2010105504497A
Other languages
Chinese (zh)
Other versions
CN102032446A (en
Inventor
焦光伟
夏于飞
谷鸣
邓松圣
王世炜
曾庆丰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Logistical Engineering University of PLA
Original Assignee
Logistical Engineering University of PLA
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Logistical Engineering University of PLA filed Critical Logistical Engineering University of PLA
Priority to CN2010105504497A priority Critical patent/CN102032446B/en
Publication of CN102032446A publication Critical patent/CN102032446A/en
Application granted granted Critical
Publication of CN102032446B publication Critical patent/CN102032446B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Abstract

The invention discloses a quick assembly and disassembly type steel pipeline extrusion cut-off device. From bottom to top, the quick assembly and disassembly type steel pipeline extrusion cut-off device is sequentially provided with a base (1), a fixed knife edge (2), a movable knife edge (3), a cross beam (4) and a hydraulic cylinder (5), wherein upright columns (6) are perpendicularly inserted in the left and right sides of the plane on the base (1); the movable knife edge (3) is connected to the upright columns (6) in a sliding mode; the hydraulic cylinder (5) comprises a cylinder cover (7) and a cylinder body (8); a piston (9) is arranged in the cylinder body (8) and fixedly connected to a piston rod (10); and the piston rod (10) is inserted into the central hole of the movable knife edge (3) after penetrating through the cylinder cover (7) and the cross beam (4). The invention provides a hydraulic device which has simple structure and is convenient for quick disassembly and assembly and convenient to carry. The quick assembly and disassembly type steel pipeline extrusion cut-off device can be used for salvaging pipeline bursting accidents in the transportation process of large-diameter pipelines, and performs the function of quickly cutting off the pipeline or weakening the medium flow. The quick assembly and disassembly type steel pipeline extrusion cut-off device is a novel salvage device for long-distance pipelines, and is efficient, practical, safe and reliable.

Description

The assembling/disassembling type steel pipe pushes cut-off device fast
Technical field
The present invention relates to a kind of hydro-mechanical unit, can steel pipe be flattened fast, (the emergent extruding fast during DN200 ~ DN500) steel oil transportation (gas) pipeline generation rupture and leakage accident is dammed to be applicable to heavy caliber.
Background technique
Generally speaking; Distant (the long then 100~300km of distance between the long distance pipeline pumping plant; Short then 30~50km), when the open-air long distance pipeline that is laid in meets accident break accident, can only take emergency shut-down and the cut-off valve of closing the accident point upstream and downstream to reduce the leakage of medium usually.But the accident pipeline section might be far away apart from preset fixedly cut-off valve position; Even valve closing; Still have medium (like petroleum productss such as gasoline, diesel oil, liquid gas) quilt a large amount of, valuable, harmful and danger to run off in vain in the pipeline section, also can cause secondary disasters such as fire, blast, environmental pollution.Existing various mechanical device or equipment all can't be handled the heavy caliber steel pipe, and are mostly fixed equipment, and dismounting is inconvenient and be not easy to carry.
Summary of the invention
The object of the present invention is to provide a kind of simple in structure, be convenient to fast assembling-disassembling and hydraulic pressure installation easy to carry, unexpected pipe explosion accident is rushed to repair in the time of carrying large diameter pipeline.
For solving above technical problem; A kind of quick assembling/disassembling type steel pipe extruding cut-off device provided by the invention; Be furnished with base (1), stationary knife mouth (2), moving knife mouth (3), crossbeam (4) and oil hydraulic cylinder (5) from top to bottom successively; Described stationary knife mouth (2), moving knife mouth (3) and crossbeam (4) are parallel to each other; It is characterized in that: the left and right sides that said base (1) is gone up the plane vertically is fitted with column (6), and described stationary knife mouth (2) and moving knife mouth (3) are arranged between the described column (6), and described stationary knife mouth (2) is installed on the described base (1) through fastening screw trip bolt (16); The edge of a knife of said stationary knife mouth (2) upwards; Described moving knife mouth (3) is slidingly connected at described column (6) middle and upper part, and the edge of a knife of said moving knife mouth (3) is downward, and described crossbeam (4) is fixedly connected on described column (6) upper end through nut (17); Described oil hydraulic cylinder (5) comprises cylinder cap (7) and cylinder body (8); Insert in the center hole of said crossbeam (4) down described cylinder cap (7) bottom; Piston (9) is housed in the described cylinder body (8); This piston (9) is divided into epicoele (8a) and cavity of resorption (8b) with described cylinder body (8), and said piston (9) is fixedly connected on the piston rod (10), and described piston rod (10) passes described cylinder cap (7) and crossbeam (4) inserts in the center hole of said moving knife mouth (3); The center hole of said moving knife mouth (3) is a blind hole; The outer wall of said cylinder body (8) is provided with first, second and receives port connection (11,12), and described first be communicated with the epicoele (8a) of said cylinder body (8) by port connection (11), and described second be communicated with the cavity of resorption (8b) of said cylinder body by port connection (12).
When the pipeline generation bursting accident between the CFS to CFS (or valve is to valve), put on the shelf at the appointment pipeline section in the area of meeting accident and to establish quick assembling/disassembling type steel pipe extruding cut-off device, implement to speedily carry out rescue work the throttling operation.At first base is placed the pipeline below; In the pipeline both sides column lower end is inserted on the base then; Upwards place the stationary knife mouth edge of a knife on the base to push between the column, and with screw that it is fastening, the moving knife mouth edge of a knife is placed downwards by between the column on the pipeline of speedily carrying out rescue work; Then crossbeam is placed relevant position, column upper end, and it is tightened up with nut.Oil hydraulic cylinder cylinder cap head is inserted in the crossbeam center hole down, be connected with hydraulic workstation band rapid pipe joint fuel feeding, return tube by hydraulic fluid port two of oil hydraulic cylinder at last, open hydraulic workstation; After the feeding of elder generation's low speed lets the piston rod external part get into moving knife mouth center hole; But just fast feed is crushed pipeline very soon and dams, after being crushed fully; Hydraulic workstation can remove from receiving the self-styled rapid pipe joint of hydraulic fluid port; Assembling/disassembling type steel pipe extruding cut-off device has played the effect of interim block valve with continuing to be retained on the pipeline fast, and it is dismountable to get rid of the normal rear of recovery up to fault.The present invention is ready usually, in case when pipeline generation explosion is arranged, can be assembled in accident pipeline section two ends up and down apace, after the hydraulic workstation rapid abutting joint, implements the repairing operation rapidly.
After making the cylinder cap head insert crossbeam; Can be locked in the crossbeam center hole securely; The waist of the center hole of said crossbeam (4) is provided with first circular groove (4a); Correspondence is provided with second circular groove (7a) with height such as first circular groove (4a) grade on the outer wall of said cylinder cap (7) head, is equipped with between described first circular groove (4a) and second circular groove (7a) and splits annulus (14), describedly splits annulus (14) and splits annulus opening and closing handle (15) and link to each other.During installation, it is lever operated to the state of opening to split the annulus opening and closing earlier, and oil hydraulic cylinder cylinder cap head is inserted in the crossbeam center hole down, again that folding is lever operated to the state that closes.
For further optimizing the mounting type of column on base; Realize fast assembling-disassembling; Described column (6) lower end has the inversion T-shape head, and said base (1) is provided with the T type hole (1a) corresponding with said T-shape head, and said T type hole (1a) communicates with circular hole (1b) on the said base (1); The diameter of said circular hole (1b) is more than or equal to said T type hole (1a) Outside diameter, and the center line in said T type hole (1a) is parallel with the center line of said circular hole (1b).
The column (6) that said base (1) is gone up the plane plug-in mounting has three, and wherein the left side is fitted with two root posts (6), and the right side is fitted with a root post (6), and described three root posts (6) become isosceles triangle to distribute.The tool stability of triangular layout, the quantity of also having practiced thrift column has simultaneously reduced the installation time, has reduced manufacture cost.
Receive to be provided with pressure limiting unloading valve (13) between the port connection (11,12) at said first, second.The pipeline of being speedily carried out rescue work is flattened in the back short time of damming very soon fully has rebound elasticity, and when the oil hydraulic cylinder upper cavity pressure increased sharply to qualification pressure, the automatic deloading of pressure limiting unloading valve was to low-pressure state, so that keep the collapsed state of steel pipe.
The left and right sides of said base (1) is provided with supplemental support (25), and described supplemental support (25) is connected on the described base (1) through disc type screw (18).More stable on the ground for whole device is placed, can not occur top-heavyly, specially increased this supplemental support.
Described piston rod (10) is hollow, and described piston (9) and cylinder cap (7) are provided with loss of weight annular groove (19).Alleviated the weight of whole device, convenient mounting or dismounting and carrying.
Said piston (9) is provided with center hole, and said piston rod (10) upper end is passed the center hole of said piston (9) and is connected on the described piston (9) through tightening nut (20).
The inwall of the inwall of the outer wall of said piston (9) and inwall, said cylinder body (8), said cylinder cap (7) reaches to go up on the plane and is provided with closure gasket groove, and Sealing (21) is housed in the described closure gasket groove.Cylinder body epicoele and cavity of resorption are isolated fully, and the cylinder body cavity of resorption and the external world are isolated fully.
Described moving knife mouth (3) is slidingly connected through V-type guide pad (24) and described column (6).V-type is better than circular steering capability, and has the self-alignment function, and it is easier to install, debug and make.
It is powerful, simple in structure, safe and reliable and advantage such as can assemble at the scene that the present invention has; It can be used for the long distance pipeline emergency first-aid repair when destroy leaking that meets accident; On fixed distance block valve steel pipeline section far away, set up emergent cutting device outside the pipe fast; Play fast shut-off or reduce the effect of media flow, further enlarge, reduce secondary disaster and reduce the wasting of resources to prevent accident; It is a kind of efficient, practical, safe and reliable novel repairing device of long distance pipeline.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is the schematic representation of the present invention with the steel pipe collapsed state.
Embodiment
Below in conjunction with accompanying drawing and embodiment the present invention is described further:
A kind of quick assembling/disassembling type steel pipe extruding cut-off device as shown in Figure 1 is made up of base 1, stationary knife mouth 2, moving knife mouth 3, crossbeam 4, oil hydraulic cylinder 5, column 6, piston 9, piston rod 10 and corresponding link.Oil hydraulic cylinder 5 is made up of cylinder cap 7 and cylinder body 8.Base 1, stationary knife mouth 2, moving knife mouth 3, crossbeam 4, oil hydraulic cylinder 5 arrange successively that from top to bottom stationary knife mouth 2, moving knife mouth 3 and crossbeam 4 are parallel to each other.The left and right sides on plane vertically is fitted with column 6 on the base 1, and stationary knife mouth 2 and moving knife mouth 3 are arranged between the and arranged on left and right sides column 6.Stationary knife mouth 2 is installed on the base 1 through fastening screw trip bolt 16, and the edge of a knife of stationary knife mouth 2 upwards; Moving knife mouth 3 is slidingly connected at the middle and upper part of column 6, and the edge of a knife of moving knife mouth 3 is downward.Column 6 is cylindrical, and moving knife mouth 3 two ends are provided with V-type guide pad 24, and V-type guide pad 24 half wraps on each column 6.Speedily carried out rescue work pipeline 22 between stationary knife mouth 2 and moving opening 3.Be inserted in the side opening of crossbeam 4 column 6 upper ends, and crossbeam 4 is fixed on the upper end of column 6 through nut 17.Insert in the center hole of crossbeam 4 down cylinder cap 7 bottoms.Piston 9 is housed in the cylinder body 8, cylinder body 8 is divided into epicoele 8a and cavity of resorption 8b, piston 9 is fixedly connected on the piston rod 10, and piston rod 10 passes cylinder cap 7 and inserts in the center hole of moving knife mouth 3 with crossbeam 4, and the center hole of moving knife mouth 3 is a blind hole.The outer wall of cylinder body 8 is provided with first, second and receives port connection 11,12, and first, second receives port connection 11,12 to receive the self-styled rapid pipe joint of hydraulic fluid port for commonly used.First be communicated with the epicoele 8a of cylinder body 8 by the self-styled rapid pipe joint 11 of hydraulic fluid port, and second be communicated with the cavity of resorption 8b of cylinder body by the self-styled rapid pipe joint 12 of hydraulic fluid port.
As shown in Figure 1; The waist of the center hole of crossbeam 4 is provided with the first circular groove 4a; The corresponding second circular groove 7a that is provided with height such as first circular groove 4a grade on the outer wall of cylinder cap 7 bottoms; Be equipped with between the first circular groove 4a and the second circular groove 7a and split annulus 14, split annulus 14 and form, lay respectively at the left and right sides of device by two identical semicircular ring.As shown in Figure 3, the semicircular ring of the left and right sides links to each other with the annulus opening and closing handle 15 of splitting of the left and right sides respectively, splits the folding that annulus opening and closing handle 15 is realized two semicircular ring through operation.
As shown in Figure 1, column 6 lower ends have the inversion T-shape head, and base 1 is provided with the T type hole 1a corresponding with T-shape head.As shown in Figure 2, T type hole 1a communicates with circular hole 1b on the base 1, the diameter of circular hole 1b and T type hole 1a Outside diameter quite or big slightly, the center line of T type hole 1a is parallel with the center line of circular hole 1b.During installation, the T-shape head of column 6 is got into from circular hole 1b, slide among the T type hole 1a, be fixed with screw again.Two columns 6 of left end are packed into from middle phase two ends, and a column of right-hand member 6 is packed into to right-hand member from left end.
As shown in Figure 2, the column 6 of plane plug-in mounting has three on the base 1, and wherein the left side is fitted with two root posts 6, and the right side is fitted with 6 one-tenth isosceles triangles of a root post 6, three root posts and distributes.
For further optimizing this working of an invention mode, as shown in Figure 1, receive the self-styled rapid pipe joint of hydraulic fluid port 11, pressure limiting unloading valve 13 is set between 12 at first, second.
As shown in Figure 2, the left and right sides of base 1 is symmetrically arranged with supplemental support 25, and supplemental support 25 is provided with quick mounting or dismounting hole 23.Like Fig. 2, shown in 3, disc type screw 18 is fixedly connected on supplemental support 25 on the base 1 through small end through the big end entering in mounting or dismounting hole 23 fast.
As shown in Figure 1, piston rod 10 is hollow, and piston 9 lower ends and cylinder cap 7 upper ends are provided with loss of weight annular groove 19.Piston 9 is provided with center hole, and piston rod 10 upper ends are passed the center hole of piston 9 and are connected on the piston 9 through tightening nut 20.The inwall of the inwall of the outer wall of piston 9 and inwall, cylinder body 8, cylinder cap 7 reaches to go up on the plane and is provided with closure gasket groove, and Sealing 21 is housed in the closure gasket groove, cylinder body 8 epicoele 8a and cavity of resorption 8b is isolated fully, and the cylinder body cavity of resorption 8b and the external world are isolated fully.

Claims (10)

1. a quick assembling/disassembling type steel pipe pushes cut-off device; Be furnished with base (1), stationary knife mouth (2), moving knife mouth (3), crossbeam (4) and oil hydraulic cylinder (5) from top to bottom successively; Described stationary knife mouth (2), moving knife mouth (3) and crossbeam (4) are parallel to each other; It is characterized in that: the left and right sides that said base (1) is gone up the plane vertically is fitted with column (6); Described stationary knife mouth (2) and moving knife mouth (3) are arranged between the described column (6); Described stationary knife mouth (2) is installed on the described base (1) through fastening screw trip bolt (16), and the edge of a knife of said stationary knife mouth (2) makes progress, and described moving knife mouth (3) is slidingly connected at described column (6) middle and upper part; The edge of a knife of said moving knife mouth (3) is downward, and described crossbeam (4) is fixedly connected on described column (6) upper end through nut (17); Described oil hydraulic cylinder (5) comprises cylinder cap (7) and cylinder body (8); Insert in the center hole of said crossbeam (4) down described cylinder cap (7) bottom; Piston (9) is housed in the described cylinder body (8); This piston (9) is divided into epicoele (8a) and cavity of resorption (8b) with described cylinder body (8), and said piston (9) is fixedly connected on the piston rod (10), and described piston rod (10) passes described cylinder cap (7) and crossbeam (4) inserts in the center hole of said moving knife mouth (3); The center hole of said moving knife mouth (3) is a blind hole; The outer wall of said cylinder body (8) is provided with first, second and receives port connection (11,12), and described first be communicated with the epicoele (8a) of said cylinder body (8) by port connection (11), and described second be communicated with the cavity of resorption (8b) of said cylinder body by port connection (12).
2. according to the described quick assembling/disassembling type steel pipe extruding cut-off device of claim 1; It is characterized in that: the waist of the center hole of said crossbeam (4) is provided with first circular groove (4a); Correspondence is provided with second circular groove (7a) with height such as first circular groove (4a) grade on said cylinder cap (7) outer wall; Be equipped with between described first circular groove (4a) and second circular groove (7a) and split annulus (14), describedly split annulus (14) and split annulus opening and closing handle (15) and link to each other.
3. according to the described quick assembling/disassembling type steel pipe extruding cut-off device of claim 1; It is characterized in that: described column (6) lower end has the inversion T-shape head; Said base (1) is provided with the T type hole (1a) corresponding with said T-shape head; Said T type hole (1a) communicates with circular hole (1b) on the said base (1); The diameter of said circular hole (1b) is more than or equal to said T type hole (1a) Outside diameter, and the center line in said T type hole (1a) is parallel with the center line of said circular hole (1b).
4. according to claim 1 or 3 described quick assembling/disassembling type steel pipe extruding cut-off devices; It is characterized in that: the column (6) that said base (1) is gone up the plane plug-in mounting has three; Wherein the left side is fitted with two root posts (6); The right side is fitted with a root post (6), and described three root posts (6) become isosceles triangle to distribute.
5. according to the described quick assembling/disassembling type steel pipe extruding cut-off device of claim 1, it is characterized in that: said first, second receives to be provided with pressure limiting unloading valve (13) between the port connection (11,12).
6. according to the described quick assembling/disassembling type steel pipe extruding cut-off device of claim 1; It is characterized in that: the left and right sides of said base (1) is provided with supplemental support (25), and described supplemental support (25) is connected on the described base (1) through disc type screw (18).
7. according to the described quick assembling/disassembling type steel pipe extruding cut-off device of claim 1, it is characterized in that: described piston rod (10) is for hollow, and described piston (9) and cylinder cap (7) are provided with loss of weight annular groove (19).
8. according to the described quick assembling/disassembling type steel pipe extruding cut-off device of claim 1; It is characterized in that: said piston (9) is provided with center hole, and said piston rod (10) upper end is passed the center hole of said piston (9) and is connected on the described piston (9) through tightening nut (20).
9. according to the described quick assembling/disassembling type steel pipe extruding cut-off device of claim 1; It is characterized in that: the inwall of the outer wall of said piston (9) and inwall, the inwall of said cylinder body (8), said cylinder cap (7) reaches to go up on the plane and is provided with closure gasket groove, and Sealing (21) is housed in the described closure gasket groove.
10. according to the described quick assembling/disassembling type steel pipe extruding cut-off device of claim 1, it is characterized in that: described moving knife mouth (3) is slidingly connected through V-type guide pad (24) and described column (6).
CN2010105504497A 2010-11-19 2010-11-19 Quick assembly and disassembly type steel pipeline extrusion cut-off device Expired - Fee Related CN102032446B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2010105504497A CN102032446B (en) 2010-11-19 2010-11-19 Quick assembly and disassembly type steel pipeline extrusion cut-off device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2010105504497A CN102032446B (en) 2010-11-19 2010-11-19 Quick assembly and disassembly type steel pipeline extrusion cut-off device

Publications (2)

Publication Number Publication Date
CN102032446A CN102032446A (en) 2011-04-27
CN102032446B true CN102032446B (en) 2012-11-07

Family

ID=43885717

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010105504497A Expired - Fee Related CN102032446B (en) 2010-11-19 2010-11-19 Quick assembly and disassembly type steel pipeline extrusion cut-off device

Country Status (1)

Country Link
CN (1) CN102032446B (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2413115Y (en) * 1999-05-21 2001-01-03 中国人民解放军后勤工程学院 Oil depot pipeline emptying automatic intake valve
WO2006022455A1 (en) * 2004-08-26 2006-03-02 Toyota Jidosha Kabushiki Kaisha Combined pressure reducing and shut-off valve
CN201277046Y (en) * 2008-10-20 2009-07-22 陶宾 External liquid-injection single-body hydraulic supporter
CN201875431U (en) * 2010-11-19 2011-06-22 中国人民解放军后勤工程学院 Steel pipeline squeezing interception device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2413115Y (en) * 1999-05-21 2001-01-03 中国人民解放军后勤工程学院 Oil depot pipeline emptying automatic intake valve
WO2006022455A1 (en) * 2004-08-26 2006-03-02 Toyota Jidosha Kabushiki Kaisha Combined pressure reducing and shut-off valve
CN201277046Y (en) * 2008-10-20 2009-07-22 陶宾 External liquid-injection single-body hydraulic supporter
CN201875431U (en) * 2010-11-19 2011-06-22 中国人民解放军后勤工程学院 Steel pipeline squeezing interception device

Also Published As

Publication number Publication date
CN102032446A (en) 2011-04-27

Similar Documents

Publication Publication Date Title
US9239125B2 (en) Manifold assembly with multiple articulating arm assemblies
CN104865056B (en) A kind of high-flow safety valve test device
US20130341539A1 (en) Valve apparatus
CN201875431U (en) Steel pipeline squeezing interception device
CN106247073A (en) The online sealer under pressure of shearing blind plate of a kind of pipe with small pipe diameter pressure piping and method for blocking
CN102032446B (en) Quick assembly and disassembly type steel pipeline extrusion cut-off device
CN104565661B (en) Sealing pipe plug
EP2716954B1 (en) Plugging machine for interventions of installation, repair, maintenance on pressure fluids supplying piping
CN104329567B (en) Pressure relief system for long-distance pipeline
CN202349599U (en) Pipeline adjusting device and skid-mounted producing test device
CN105945868A (en) Simple valve replacing tool
CN207701485U (en) A kind of large size lubricating oil station bladder type hydropneumatic accumulator
CN203430722U (en) Potable manual pressure oil pump used under oil well
CN104213848A (en) Arc sealing device for pipeline or drill pipe hole forming under pressure and using method
CN201041273Y (en) Petroleum transport pipeline drainage superposed cap leakage-repairing device
CN208565943U (en) Reducer tee weld leakage fixture
CN105370651A (en) High-pressure oil circuit manifold block
CN210564446U (en) Gas injection wellhead device with safety valve and control system
CN102927293A (en) Emergency cut-off valve at bottom of built-in tank in low-temperature liquid storage tank
CN204592877U (en) A kind of manually operated steel pipeline squeezing interception device
CN104075055B (en) A kind of hose connection device
CN111720729A (en) Highly-sealed inflation device
CN102951383A (en) Sealed oil nozzle used for oil bag
CN216383000U (en) Emergency separation device for offshore LNG (liquefied Natural gas) transfer
CN214617891U (en) Multifunctional quick connecting valve for pipeline

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20121107

Termination date: 20131119