CN103968148B - A kind of online method for blocking of leakage flat valve - Google Patents
A kind of online method for blocking of leakage flat valve Download PDFInfo
- Publication number
- CN103968148B CN103968148B CN201410141831.0A CN201410141831A CN103968148B CN 103968148 B CN103968148 B CN 103968148B CN 201410141831 A CN201410141831 A CN 201410141831A CN 103968148 B CN103968148 B CN 103968148B
- Authority
- CN
- China
- Prior art keywords
- valve
- tunnel
- hydraulic
- releasing
- larynx hoop
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K43/00—Auxiliary closure means in valves, which in case of repair, e.g. rewashering, of the valve, can take over the function of the normal closure means; Devices for temporary replacement of parts of valves for the same purpose
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
nullThe invention discloses a kind of online method for blocking of leakage flat valve，Including panel valve and hand-hydraulic device for casting，Described panel valve is preset at its valve gap position and is equipped with plugging device，This plugging device includes injection tunnel that valve gap outside diameter face is radially arranged and tunnel of releasing，And the black box of valve rod，Black box is made up of larynx hoop and garter spring，The present invention is directed to security performance during online leakage repairing during classic flat-plate valve uses、Operating characteristics and stability problem，Propose the solution of original creation，Make the maintainer can be efficient、Solve the leakage problem at scene safely，Its method can make repaired panel valve when entirety is keeped in repair，Can also regenerate and reuse，It is not only the production of enterprise、The quality time is won safely in personal security and social environment，Also reduce the maintenance cost of enterprise simultaneously，The present invention is not limited to petrochemical industry，Relevant industries for related to panel valve，Can be applied to use online，Such as fire-fighting、Water conservancy、Electric power、Plumbing etc..
Description
Technical field
The present invention relates to petrochemical field, particularly to a kind of online method for blocking of leakage flat valve.
Background technology
For field of petroleum exploitation, owing to its working environment is severe, it is mostly high temperature, high pressure, high corrosive environment, additionally,
The crude content component that produces is complicated: oil, gas, sand, water etc., and pipeline and panel valve propose the highest requirement: resistance to height
Warm, high pressure resistant, corrosion-resistant, wear-resistant, stability, pipeline, panel valve performance and quality by be directly connected to enterprise production,
Personal safety and social environment safety.
Panel valve choke valve is the pipeline opening and closing apparatus that petrochemical field is more commonly used, and it is damaged the special of ability by having anti-impact
Tungsten carbide material is molded.By the upper and lower displacement of parallel-moving type valve plate, thus realize the regulation of flow.It has simple for structure
Etc. feature.
But classic flat-plate valve rod-type actuator either manual type, pneumatic type, electrodynamic type, also apply to operating mode
For more than API5000 high density, the fluid pressure type panel valve of high pressure pipeline, all can run into online, carry pressure situation bottom flange with
How Sudden Leakage phenomenon between valve rod, in the case of cannot blinding off a line immediately, accomplish quickly to dispose, with avoid enterprise because of
The tremendous economic loss being forced to stop production and bring；And the personal safety that causes because of valve invalidation and social environment safety hazard,
It it is the target that people extremely pay close attention in petrochemical industry.PetroChina Company Ltd. is " for high-temperature high pressure valve
Pressurized plugging clamp " patent (ZL:200420077525.7), it is proposed that a kind of pressure is 10MPa, and temperature is under 200 DEG C of operating modes,
Valve packing box is carried out the pressurized leaking stoppage method of secondary filling, studies carefully its summary of the invention and have following defects that
1. use on-the-spot secondary filler tunnel boring, be easily generated and fire；
2. using on-the-spot tunnel hand drill method, drill bit once occurs card to break, and especially card is disconnected is to occur at perforation
Time, not only cause secondary leakage, and more should not block；
3. on-the-spot manipulation time long efficiency is low, it is difficult to accomplishes quick blocking, is unfavorable for the personal safety of operator；
4. the valve for corrosion or corrosion carries out fixture type boring, is easily generated stress explosion.
Online glue injection type Rapid leakage repairing is emergency repair method commonly used in petrochemical industry in the last few years, but be all based on
After the valve gap of leakage valve is holed by above-mentioned scene, carrying out injecting glue for the core of valve and fill up, this is undoubtedly efficiency
Lowly, and operator safety is existed to the behave of hidden danger.
Summary of the invention
For technological deficiency present in above-mentioned prior art means and actually used operating mode, it is contemplated that propose one
The online method for blocking of leakage flat valve that scene can quickly be disposed and security performance is high.
The technical solution adopted for the present invention to solve the technical problems is: a kind of online method for blocking of leakage flat valve,
Including panel valve and hand-hydraulic device for casting, described panel valve is preset at its valve gap position and is equipped with plugging device, should
Plugging device includes injection tunnel that valve gap outside diameter face is radially arranged and release tunnel, and the black box of valve rod, seals
Assembly is made up of larynx hoop and garter spring, injects tunnel and tunneling of releasing in the inside and outside hole wall of valve gap, injection tunnel and tunnel of releasing
The spill annular packing rooved face that the axial line in road is arranged with the lateral surface of larynx hoop is that antarafacial is vertical, at outer wall two end of valve gap
Hole is provided with disposed thread and fastens airtight with check valve and joint of releasing；
Described larynx hoop is annulus tubular, and its internal diameter and valve rod are that concentric overlaps mutually, external diameter and setting in valve gap endoporus
Ring-type limited step is that concentric overlaps mutually, is provided with garter spring limited step in the Two-port netwerk up and down of larynx hoop, outside larynx hoop
Side is provided with the annular packing groove of spill；Garter spring is an opening annulus, and two end points of its opening are divided edge structure, two
The table plane of groove is that antarafacial is parallel, the groove of two end points of garter spring opening, its groove inclination alpha, 25 °≤α≤45 °,
Larynx hoop is non-metallic material, and garter spring is metal material；
Described hand-hydraulic device for casting, including hydraulic hand-pump, high-pressure hose, colloid-injecting gun and connection member, manually
Hydraulic pump is horizontal type structure, observes porthole including Manual pressure bar, feather valve and liquid level, connects a threeway at its hydraulic pressure outfan
The instrument adapter of structure, an outlet of instrument adapter is that screw threads for fastening is connected by joint and Pressure gauge, and instrument connects
Another outlet of device is that screw threads for fastening is connected by joint and colloid-injecting gun or high-pressure hose, and colloid-injecting gun is that one horizontal, two port claims
Barrel-type casing structure, be made up of the cylinder cap of cylinder body, piston and two ends, be provided with O type between piston and gray iron and cylinder body close
Seal, is connected in screw threads for fastening between cylinder cap with cylinder body, has built-in piston to open in piston axially arranged and pulls out screw, colloid-injecting gun by
Being divided into two parts of hydraulic pressure chamber and filler chamber before and after piston, the lateral surface concentric at cylinder block is provided with heating cuff, even
Relay part includes nozzle, quick plug and seal washer, is provided with ring-type electric boiling plate in heating cuff, and its input is with outside
Cable is connected.
This method for blocking comprises the following steps:
A. tunnel and the pre-seting of tunnel of releasing are injected
Inject tunnel and tunnel of releasing and can synchronize drilling via formations when valve gap makes, injection tunnel with release tunneling in
The inside and outside hole wall of valve gap, the spill annular packing groove table that the lateral surface of the axial line and larynx hoop that inject tunnel and tunnel of releasing is arranged
Face is that antarafacial is vertical, and two stomidiums of outer wall at valve gap are provided with disposed thread and fasten airtight with check valve and joint of releasing,
During processing valve gap endoporus, synchronizing trolley goes out the limited step of larynx hoop；
B. larynx hoop, the preparation of larynx ring
Using linear cutter technology to cut out groove garter spring blank good for car, larynx hoop is non-metallic material, can use note
Mold technique one-shot forming；
C. the frock of panel valve plugging device
Frock is synchronized when panel valve integral installation；
D. hydraulic hand-pump, high-pressure hose configuration
Existing outsourcing piece configures；
E. the preparation of colloid-injecting gun
Lathe process technique car is used to go out gray iron, nozzle, quick plug, pressure cap, each parts of piston；Assembled formation,
Outside cylinder body, concentric installs heating cuff；
F. the frock of hydraulic pressure irrigation device
Link up frock by hydraulic hand-pump, high-pressure hose, colloid-injecting gun and connector；
G. performance detection
While the panel valve detection good to integral installation, can synchronize to use the hydraulic method plugging device to pre-seting
Action and airtight performance detection is carried out with hand-hydraulic device for casting；
H. the operation of online closure
Accessing pipeline use scene by detecting the qualified panel valve of performance, configuration hand-hydraulic device for casting is standby simultaneously
With, when there is leakage, inserting fluid sealant in hand-hydraulic device for casting colloid-injecting gun filler chamber, turning on valve gap outer wall stomidium unidirectional
Bonnet on valve and joint of releasing, check valve of being screwed on by the high-pressure hose connector with disposed thread, by fluid sealant by unidirectional
Injection tunnel squeezed into by valve, until fluid sealant is from connection port extrusion of releasing, then tightens joint of releasing, and continues to injecting tunnel injecting glue straight
To leaking stopping, pulling down high-pressure hose connector and again check valve bonnet is tightened.
The heating cuff inner annular electricity that in described hand-hydraulic device for casting, outside colloid-injecting gun cylinder body, concentric is installed adds
Hot plate, the electrified regulation when operating ambient temperature is low temperature state.
Security performance when the present invention is directed to online leakage repairing during classic flat-plate valve uses, operating characteristics and steady
Determine performance issue, it is proposed that the solution of original creation, on the valve gap of panel valve, pre-seted a set of can closure online and let out
The device of leakage valve gap so that maintainer can solve the leakage problem at scene efficiently and safely, additionally, its method can make
Repaired panel valve is when entirety is keeped in repair, moreover it is possible to regeneration is reused, the most only production of enterprise, personal security and society
Environmental security wins the quality time, also reduces the maintenance cost of enterprise simultaneously, and the present invention is not limited to petrochemical industry, for institute
Relate to the relevant industries of panel valve, can be applied to use online, such as fire-fighting, water conservancy, electric power, plumbing etc..
Accompanying drawing explanation
Fig. 1 is panel valve structural representation of the present invention；
Fig. 2 is (office puts) structural representation at panel valve A of the present invention；
Fig. 3 is black box Split type structure schematic diagram of the present invention；
Fig. 4 is black box assembled state of the present invention (master regards) structural representation；
Fig. 5 is black box assembled state of the present invention (B-B section view) schematic diagram；
Fig. 6 is that black box of the present invention uses state (during unimplanted fluid sealant) structural representation；
Fig. 7 is that black box of the present invention uses state (when injecting fluid sealant) structural representation；
Fig. 8 is hand-hydraulic device for casting (single hose) structural representation of the present invention；
Fig. 9 is hand-hydraulic device for casting (double hose) structural representation of the present invention；
Figure 10 is hand-hydraulic device for casting colloid-injecting gun (office puts) structural representation of the present invention；
Figure 11 is classic flat-plate valve mechanism schematic diagram.
In its figure: 1-valve gap；2-larynx hoop；3-valve rod；4-sealing ring；5-valve seat；6-fastening bolt；7-fastening nut；8-
Inject tunnel；9-check valve；9.1-bonnet；10-garter spring；11-releases tunnel；12-releases joint；12.1-fluid sealant；13-notes
Glue rifle；13.1-cylinder body；13.2-cylinder cap；13.3-nozzle；13.4-quick plug；13.5-pressure cap；13.6-heating cuff；
13.7-piston；13.8-piston opens and pulls out screw；13.9-seal washer；13.10-hydraulic pressure chamber；13.11-filler chamber；13.12-electricity
Cable；13.13-O RunddichtringO；14-high-pressure hose；15-Pressure gauge；16-instrument adapter；17-feather valve；18-Manual pressure bar；
19-hydraulic hand-pump；20-liquid level observes porthole.
Detailed description of the invention
The present invention illustrates specific implementation method using panel valve shown in Fig. 1 as most preferred embodiment:
Different from the pressurized leaking stoppage method that tradition carries out secondary filling to valve gap 1 stuffing box, present invention employs flap type
Door built-in type arranges the design concept of plugging device, in the lower section of valve gap 1 stuffing box, is provided with and forms with larynx hoop 2 and garter spring 10
Black box, be radially arranged a fluid sealant in valve gap 1 outside diameter face simultaneously and inject tunnel 8 and a tunnel 11 of releasing,
Under panel valve normal operating conditions, it is arranged at the garter spring 10 of the larynx hoop 2 upper and lower Two-port netwerk of endoporus by bore expansion in larynx hoop 2, garter spring
10 coordinate for up and down with valve rod 3, and once the stuffing box in valve gap 1 lost efficacy, close with what valve rod 3 concentric was arranged in its lower end
Sealing assembly, is injecting fluid sealant 12.1 and is expanding under extruding by injecting tunnel 8, the garter spring 10 of larynx hoop 2 deformation retract compressing opening to
Inside close up, the most at last valve rod 3 locking, thus form the secondary seal to valve gap 1.
Owing to larynx hoop 2 uses metal material, compared with the sealing member of non-metallic material, there is higher resistance to elevated temperatures
With wear-resistant, corrosion-resistant, thus the present invention high temperature, high pressure severe use working environment in, accomplish the quick place of circuit failure
Putting, speed away, the personal safety of workman is able to basic guarantee.
Inject tunnel 8 and tunnel 11 of releasing and can synchronize drilling via formations when valve gap 1 makes, at the endoporus of processing valve gap 1
Time, synchronizing trolley goes out the limited step of larynx hoop 2, uses linear cutter technology to cut out groove, larynx hoop 2 garter spring 10 blank good for car
For non-metallic material, molding process one-shot forming can be used.
By the above-mentioned black box formed with larynx hoop 2 and garter spring 10, synchronize when valve integrated tooling to insert valve, adjust
Good its fastens airtight valve gap with injection tunnel 8 and radial and axial the mating in tunnel 11 of releasing, check valve 9 and joint 12 of releasing
1 outer wall stomidium, the online plugging device of a set of preset value of the most commercially available one-tenth, this device is at ordinary times in panel valve normal operating conditions
Under, inoperative, only at the bonnet 9.1 opened on check valve 9, fluid sealant 12.1 is squeezed into black box behind injection tunnel 8
Could action.
Different from the hydraulic pressure colloid-injecting gun 13 of conventional belt dynamic structure, fluid sealant 12.1 of the present invention injects and have employed external liquid
Pressure power source and colloid-injecting gun 13 split design principle, i.e. manual hydraulic device separate with colloid-injecting gun 13, and enter with high-pressure hose 14
Row hydraulic power carries, and this not only alleviates the manipulation strength that workman brings due to deadweight, it is simple to the motility of execute-in-place, with
Time too increase colloid-injecting gun 13 filler chamber 13.11 plot ratio.
Different from conventional hydraulic colloid-injecting gun 13, the two port that present invention employs colloid-injecting gun 13 claims cylinder block 13.1 to design
Structure so that filler chamber 11 in cylinder body 13.1 and and hydraulic pressure chamber 10 can two exchange and use, i.e. in filler chamber 11, filler is used
After complete again filling time, piston need not be return in situ, and directly filling filler in hydraulic pressure chamber 10, then rotates cylinder body 13.1
180 ° re-assembly.
For extreme low temperature site work environment such as the distinctive field of petrochemical industry, polar region, oceans, the present invention is at colloid-injecting gun 13
The outer surface concentric of cylinder body 13.1 is provided with hood type heating cuff 13.4, is provided with ring-type electrical heating in heating cuff 13.4
Plate, its input is connected with external cable 13.12, when linemen's drive line walking inspection pipeline in the wild, can use vehicle-mounted
Power supply carries out on-the-spot filler chamber 13.11 and heats, to increase the mobility of filler, it is simple to the timely repairing that Sudden Leakage is on-the-spot.
The present invention, based on online leakage repairing phenomenon, have employed built-in type design when the integral production of panel valve product
Principle, i.e. pre-seted at valve gap 1 position a set of can secondary plugging device online, not only make maintainer can efficiently,
Solve the leakage problem at scene safely, and the panel valve blocked by repairing is when entirety is safeguarded, as long as taking out closure
Fluid sealant 12.1, or change a whole set of black box, valve gap 1 can also regenerate to be reused, with documents (ZL:
200420077525.7) the destructive method for blocking disclosed in is compared, the most only the production of enterprise, personal security and social environment
Safety wins the quality time, also reduces the maintenance cost of enterprise simultaneously, and the present invention is not limited to petrochemical industry, relates to for all
And the relevant industries of panel valve, can be applied to use online, such as fire-fighting, water conservancy, electric power, plumbing etc..
The foregoing is only a preferred embodiment of invention, it is impossible to limit protection scope of the present invention with it, the present invention is also
The structure that can have other changes, as long as the equalization that protection domain under this invention is made changes and modifies, all should belong to the present invention
In the range of containing.
Claims (2)
1. the online method for blocking of leakage flat valve, including panel valve and hand-hydraulic device for casting, it is characterised in that:
Described panel valve at its valve gap position preset is equipped with plugging device, this plugging device include valve gap outside diameter face diameter to
The injection tunnel arranged and release tunnel, and the black box of valve rod, black box is made up of larynx hoop and garter spring, injects tunnel
Tunneling is arranged in the inside and outside hole wall of valve gap, the lateral surface of the axial line and larynx hoop that inject tunnel and tunnel of releasing with releasing
Spill annular packing rooved face is that antarafacial is vertical, and two stomidiums of outer wall at valve gap are provided with disposed thread and check valve and release
Joint fastening is airtight；
Described larynx hoop is annulus tubular, and its internal diameter and valve rod are that concentric overlaps mutually, and arrange in external diameter and valve gap endoporus is ring-type
Limited step is that concentric overlaps mutually, is provided with garter spring limited step in the Two-port netwerk up and down of larynx hoop, at the lateral surface of larynx hoop
It is provided with the annular packing groove of spill；Garter spring is an opening annulus, and two end points of its opening are divided edge structure, two grooves
Table plane be that antarafacial is parallel, the groove of two end points of garter spring opening, its groove inclination alpha, 25 °≤α≤45 °, larynx hoop
For non-metallic material, garter spring is metal material；
Described hand-hydraulic device for casting, including hydraulic hand-pump, high-pressure hose, colloid-injecting gun and connection member, hand-hydraulic
Pump is horizontal type structure, observes porthole including Manual pressure bar, feather valve and liquid level, connects a threeway structure at its hydraulic pressure outfan
Instrument adapter, one of instrument adapter outlet is that screw threads for fastening is connected by joint and Pressure gauge, instrument adapter
Another outlet is that screw threads for fastening is connected by joint and colloid-injecting gun or high-pressure hose, and colloid-injecting gun is the cylinder that one horizontal, two port claims
Shape cylinder structure, is made up of the cylinder cap of cylinder body, piston and two ends, is provided with O type and seals between piston and gray iron and cylinder body
Circle, is connected in screw threads for fastening between cylinder cap with cylinder body, has built-in piston to open in piston axially arranged and pulls out screw, and colloid-injecting gun is by living
Being divided into two parts of hydraulic pressure chamber and filler chamber before and after plug, the lateral surface concentric at cylinder block is provided with heating cuff, connects
Parts include nozzle, quick plug and seal washer, are provided with ring-type electric boiling plate, its input and external electrical in heating cuff
Cable is connected；
This method for blocking comprises the following steps:
A. tunnel and the pre-seting of tunnel of releasing are injected
Inject tunnel and tunnel of releasing and can synchronize drilling via formations when valve gap makes, inject tunnel and release tunneling in valve gap
Inside and outside hole wall, the spill annular packing rooved face that the lateral surface of the axial line and the larynx hoop that inject tunnel and tunnel of releasing is arranged in
Antarafacial is vertical, and two stomidiums of outer wall at valve gap are provided with disposed thread and fasten airtight with check valve and joint of releasing, in processing
During valve gap endoporus, synchronizing trolley goes out the limited step of larynx hoop；
B. larynx hoop, the preparation of larynx ring
Using linear cutter technology to cut out groove garter spring blank good for car, larynx hoop is non-metallic material, can use injection molding work
Skill one-shot forming；
C. the frock of panel valve plugging device
Frock is synchronized when panel valve integral installation；
D. hydraulic hand-pump, high-pressure hose configuration
Existing outsourcing piece configures；
E. the preparation of colloid-injecting gun
Lathe process technique car is used to go out gray iron, nozzle, quick plug, pressure cap, each parts of piston；Assembled formation, at cylinder
External side concentric installs heating cuff；
F. the frock of hydraulic pressure irrigation device
Link up frock by hydraulic hand-pump, high-pressure hose, colloid-injecting gun and connector；
G. performance detection
While the panel valve detection good to integral installation, can synchronize to use the hydraulic method plugging device to pre-seting and hands
Hydrodynamic pressure device for casting carries out action and airtight performance detection；
H. the operation of online closure
Accessing pipeline use scene by detecting the qualified panel valve of performance, configuration hand-hydraulic device for casting is standby simultaneously,
When there is leakage, insert fluid sealant in hand-hydraulic device for casting colloid-injecting gun filler chamber, turn on valve gap outer wall stomidium check valve
Bonnet and release joint, check valve that the high-pressure hose connector with disposed thread is screwed on, fluid sealant is beaten by check valve
Entering to inject tunnel, until fluid sealant is from connection port extrusion of releasing, then tighten joint of releasing, continuing to injecting tunnel injecting glue until letting out
Leakage stops, and pulls down high-pressure hose connector and is tightened by check valve bonnet.
The online method for blocking of leakage flat valve the most according to claim 1, it is characterised in that described hand-hydraulic fills
The heating cuff inner annular electric boiling plate that in dispensing device, outside colloid-injecting gun cylinder body, concentric is installed, is low temperature at operating ambient temperature
Electrified regulation during state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410141831.0A CN103968148B (en) | 2014-04-10 | 2014-04-10 | A kind of online method for blocking of leakage flat valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410141831.0A CN103968148B (en) | 2014-04-10 | 2014-04-10 | A kind of online method for blocking of leakage flat valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103968148A CN103968148A (en) | 2014-08-06 |
| CN103968148B true CN103968148B (en) | 2017-01-04 |
Family
ID=51237991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410141831.0A Expired - Fee Related CN103968148B (en) | 2014-04-10 | 2014-04-10 | A kind of online method for blocking of leakage flat valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103968148B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109510052A (en) * | 2018-11-02 | 2019-03-22 | 国网辽宁省电力有限公司丹东供电公司 | A kind of 10 kv cable connect-disconnect plug extracting tools |
| CN112283441A (en) * | 2020-10-20 | 2021-01-29 | 吴忠仪表有限责任公司 | Use method of multistage expansion curing device for inner cavity of control valve stem packing box |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5803108A (en) * | 1996-12-09 | 1998-09-08 | International Marketing, Inc. | Tool and method for inserting a filter element into the valve stem of a wheel assembly |
| CN201209673Y (en) * | 2008-06-20 | 2009-03-18 | 湖北洪城通用机械股份有限公司 | Influent hydraulic operated double-sealing butterfly valve for machinery overhaul sealing water turbine |
| CN202392349U (en) * | 2012-01-12 | 2012-08-22 | 程浩然 | Device for replacing natural gas valve under pressure |
| CN203115382U (en) * | 2013-02-07 | 2013-08-07 | 公安部上海消防研究所 | Online pipeline plugging device |
-
2014
- 2014-04-10 CN CN201410141831.0A patent/CN103968148B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5803108A (en) * | 1996-12-09 | 1998-09-08 | International Marketing, Inc. | Tool and method for inserting a filter element into the valve stem of a wheel assembly |
| CN201209673Y (en) * | 2008-06-20 | 2009-03-18 | 湖北洪城通用机械股份有限公司 | Influent hydraulic operated double-sealing butterfly valve for machinery overhaul sealing water turbine |
| CN202392349U (en) * | 2012-01-12 | 2012-08-22 | 程浩然 | Device for replacing natural gas valve under pressure |
| CN203115382U (en) * | 2013-02-07 | 2013-08-07 | 公安部上海消防研究所 | Online pipeline plugging device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103968148A (en) | 2014-08-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202081851U (en) | Polish rod sealing apparatus | |
| CN108019178B (en) | Construction method for plugging production pipe column under pressure in pipe | |
| CN105386737A (en) | Blowout preventing hole opener for casing pipe | |
| CN103968148B (en) | A kind of online method for blocking of leakage flat valve | |
| CN203383769U (en) | Casing anti-creeping device for casing heads | |
| CN204805827U (en) | Incessantly defeated area is pressed and is changed high -pressure undergauge shutoff head for ball valve | |
| CN102828719A (en) | Integrated pluralistic oil production wellhead device | |
| CN203655211U (en) | Petroleum and natural gas injection and production wellhead flange leakage rapid under-pressure plugging device | |
| CN106285544B (en) | Thermal recovery steam injection well head closing device | |
| CN204646172U (en) | Pressure sealing casing head can be repaired | |
| CN203830238U (en) | Manual hydraulic perfusion device | |
| CN204094186U (en) | High pressure manual hole making drill | |
| CN110469286A (en) | A kind of combined pressure wellhead assembly for pressure break with pressure | |
| CN106593340B (en) | High-pressure shallow totally-enclosed drilling plug device and using method thereof | |
| CN106322049A (en) | Fastened injection agent-isolating type pipeline clamp | |
| CN105275422A (en) | Thermal recovery casing head | |
| US11353131B2 (en) | Gate valve bonnet connector | |
| RU2563845C2 (en) | Sealing method of cavity of pipes and annular space of well; pgu-2 anti-syphonage sealing device; pk-1 washing coil | |
| CN203892704U (en) | Flat valve with on-line plugging apparatus | |
| CN201110443Y (en) | Rapid plugging device for pipe laying | |
| CN207554010U (en) | A kind of wellhead assembly valve allowing pressurized maintenance device | |
| CN208816071U (en) | A kind of high pressure shut-in well oil-water well punching device under pressure | |
| CN208220713U (en) | Emergent blowout preventer of well head hydraulic pressure | |
| CN208672258U (en) | Ground simulation test device for sealing drum | |
| CN208106372U (en) | A kind of compound preventer of sucker rod |
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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20170410 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |