CN208311550U - It is a kind of can to pressure system injected media and can on-line rinsing and maintenance device - Google Patents
It is a kind of can to pressure system injected media and can on-line rinsing and maintenance device Download PDFInfo
- Publication number
- CN208311550U CN208311550U CN201820879700.6U CN201820879700U CN208311550U CN 208311550 U CN208311550 U CN 208311550U CN 201820879700 U CN201820879700 U CN 201820879700U CN 208311550 U CN208311550 U CN 208311550U
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- channel
- valve
- injection pipe
- medium
- injection
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Abstract
The utility model discloses one kind can be to pressure system injected media and the device of energy on-line rinsing and maintenance, it includes connecting injecting mechanism with pressure resistant vessel open end, specifically, injecting mechanism includes the installation passage with the media inlet channel connection of pressure resistant vessel, the switch valve of on and off installation passage and media inlet channel connection, medium is injected by injection pipe and is sprayed into pressure resistant vessel by injection nozzle, the arrival end of injection pipe is equipped with the triple valve that can be used for cleaning injection pipe inner passage, triple valve realizes that medium injects purpose or purpose is rinsed in cleaning by converting its core come the channel of crossover tee valve, achieve the effect that Hand scarf injection nozzle and injection pipe, it is implemented without the system effect out of service that Hand scarf can be carried out to injection nozzle and injection pipe.
Description
Technical field
The utility model relates to technical field of petrochemical industry, especially one kind can simultaneously energy be online to pressure system injected media
The device for rinsing and repairing.
Background technique
The system of continuous operation with pressure for petrochemical industry etc., it is often necessary to inject certain medium into band pressure device, have
A little injected medias have solid particle, some injected medias can bond or block injection device, because of injection when using for a long time
The bonding of medium or blocking will lead to injection device cannot effective injected media or entirely ineffective.Under normal conditions, it can only incite somebody to action
Whole system is out of service, then removes injection device and is cleared up, repaired or replaced, and restarts again after reinstalling whole
A system needs to make whole system out of service using such method, discontinuous and unstable due to system operation, to being
It commands and carrys out huge adverse effect, and result in significant economic losses.
Utility model content
One kind that in order to overcome the deficiencies of the prior art, the utility model provides can be to pressure system injected media and can be
Line rinses and the device of maintenance, solves that whole system need to be stopped transport due to cleaning, maintenance or replacement in the prior art and is brought
Great economy cost allowance the problem of.
To achieve the goals above, the technical solution adopted in the utility model is: one kind can be to pressure system injected media
And the device of energy on-line rinsing and maintenance, including the injecting mechanism connecting with pressure resistant vessel open end, pressure resistant vessel open end is set
There is media inlet channel, injecting mechanism includes the installation passage with the media inlet channel connection, it is characterised in that: the injection
Mechanism further includes the switch valve of on and off installation passage Yu media inlet channel connection, and injection is combined in installation passage
Pipe, the outlet end of injection pipe are equipped with the media inlet channel across pressure resistant vessel and protrude into the spray of the injection inside pressure resistant vessel
Mouth, the arrival end of injection pipe are equipped with the triple valve that can be used for cleaning injection pipe inner passage, and triple valve includes valve body, valve body packet
T-type channel is included, T-type channel includes horizontal channel and Vertical Channel, and horizontal channel Single port is the medium inlet entered for medium
End, horizontal channel another port is the Butterworth Hatch entered for cleansing medium, and Vertical Channel docks connection with injection pipe, and the T-type is logical
The core for the link relation between conversion medium arrival end, Butterworth Hatch, Vertical Channel is equipped in road.
In above structure, when injecting mechanism turns on the switch valve under normal mode of operation state so that installation passage with hold
Media inlet channel conducting on pressure vessel, medium is injected by injection pipe arrival end is output to pressure resistant vessel through injection pipe nozzle
In, it is uniformly mixed；When injecting the medium with solid particle or easily bonding, susceptible to plugging medium for a long time, injection nozzle will lead to
Middle aperture portion blocking, blocking will affect being efficiently injected into for medium to a certain extent, at this moment need to clear up, repair or replace injection
Nozzle, at this point, the connection of Clean- three-way diverter valve conducting Butterworth Hatch and Vertical Channel is closed medium inlet, by clear
Wash mouth injection does not have dysgenic clean medium to inject the pipe internal channel of entire injection pipe without solid particle, to system
It rinses, until the solid particle medium being blocked in injection nozzle aperture and cementing medium are rinsed well completely, then switches
Cleaning triple valve, rinse mouth is closed, and medium inlet is opened, and works normally injecting mechanism again, using above-mentioned flushing
Method is easy to operate to solve blockage problem, and it is out of service not need whole system.
Further, the arrival end of the injection pipe be connected with can the operating mechanism that moves up and down of Driver injection pipe, institute
The check-valves that on and off installation passage is additionally provided between operating mechanism and switch valve is stated, the injecting mechanism passes through switch valve
The biswitch structure on flow of media path is formed between check-valves and media inlet channel.
In above structure, clean medium is injected from rinse mouth when use, injection flushing is carried out still to the pipe internal channel of injection pipe
When being not achieved the clean purpose of injection nozzle aperture, at this point, being risen by operating mechanism Driver injection pipe, so that injection
Pipe rises removal from installation passage, and carries out dismounting and change maintenance to injection nozzle；It is needed in injection nozzle lifting process
Pay attention to preventing the refluence or leakage of medium in pressure resistant vessel；Therefore when injection pipe as operating mechanism rises, and its injection nozzle position
When setting higher than switch valve, valve is turned off the switch, the connection of installation passage and media inlet channel is blocked, prevents from mixing in pressure resistant vessel
The medium of particle, which backflows out of, to be come.
Further, the check-valves includes valve body, valve channel and valve chamber connection, and valve chamber is towards switch valve side, valve
Towards operating mechanism one end, one end end face that valve channel is connect with valve chamber is hinged with flap in body channel, and the hinged end of flap is set
There are the torsional spring for driving flap free end towards valve body channel direction rotation trend, the other end of the injection pipe relative to nozzle
Check-valves is stretched out after sequentially passing through the path of valve chamber, valve channel under connection state and is connect with operating mechanism, the flap
Free end be extruded in injection tube wall on.
The valve chamber and valve channel of above-mentioned check-valves constitute the exit portion of installation passage, between valve channel and injection pipe
It is tightly connected by filler and filler pressing sleeve, when injection pipe rises under the driving of operating mechanism, the nozzle of injection pipe passes through
After valve chamber enters in valve channel, the flap in valve chamber is acted on and valve body channel by torsional spring, further prevents outside medium
Leakage.
Further, the switch valve uses three-way diverter valve, and three-way diverter valve includes valve body, is equipped with valve in body cavity
Core, spool are equipped with three circulation passage of T-type, and triplet commutation valve body is affixed by transition bindiny mechanism and check valve body, transition machine
Structure includes attachment base, and attachment base is equipped with the attachment base channel of non-return valve valve chamber and three-way diverter valve body cavity, the mistake
It crosses bindiny mechanism and is additionally provided with protection medium channel with attachment base channel connection, the three-way diverter valve is by connecting flange and holds
The ring flange of pressure vessel open end connects, connecting flange be equipped with three-way diverter valve body cavity and with the medium of pressure resistant vessel
The connecting flange channel of access road connection, the injection pipe lead to across attachment base channel and injection pipe and attachment base channel
It crosses filler and gland is tightly connected, the open end of the check valve body is connected on gland and passes through sealing ring
Sealing cooperation, check valve body open end are equipped with stud, and stud sequentially passes through check valve body open end end edge, filler pressure
Lid, after transition bindiny mechanism with nut check.
In above structure, operating mechanism Driver injection pipe is risen so that the nozzle location of injection pipe is higher than switch valve, closing
After switch valve, by protecting medium channel to inject clean medium, pressure medium is protected not less than the pressure medium in pressure resistant vessel
While holding normal injected media, nozzle is continued to lift up.
Further, the operating mechanism includes the guide rod docked with injection pipe, the hollow channel of guide rod and injection pipe
Inner pipe passway connection, guide rod are fixedly connected through anti-rotation flange with the connecting flange for being installed on injection tube end, and guide rod is another
End is threaded with leader nut, and leader nut is installed in driving mechanism.
In above structure, hollow cavity one end of guide rod docks connection with injection pipe, and the hollow cavity other end of guide rod is then constituted
Medium inlet enters guide rod, injection pipe for medium, and is sprayed into pressure resistant vessel by nozzle, and guide rod and anti-rotation flange weld, and prevents
Restriction effect of the turned flange by pillar circumferential direction can only move up and down under driving mechanism driving along column is axial, so as to
In the work such as cleaning to injection pipe and nozzle, repair, replace.
Using the above scheme, the medium injection device of the utility model can be truly realized the system of not needing energy out of service
The purpose of Hand scarf, maintenance and replacement is carried out to injection nozzle and injection pipe.
The utility model is further described with reference to the accompanying drawing.
Detailed description of the invention
Attached drawing 1 is the utility model specific embodiment structural schematic diagram；
The status diagram of three-way diverter valve when attached drawing 2 is the utility model specific embodiment normal injected media；
The status diagram of three-way diverter valve when attached drawing 3 is the utility model specific embodiment Hand scarf；
Attached drawing 4 is the structural schematic diagram of the triple valve of the utility model specific embodiment.
Specific embodiment
Specific embodiment of the utility model be as shown in Figs 1-4 can to pressure system injected media and can on-line rinsing and
The device of maintenance comprising injecting mechanism, pressure resistant vessel open end are equipped with media inlet channel, and injecting mechanism includes and the medium
The installation passage of access road connection, injecting mechanism further include the three of on and off installation passage and media inlet channel connection
Lead to reversal valve, injection pipe is combined in installation passage, the outlet end of injection pipe is equipped with logical across the medium inlet of pressure resistant vessel
Road and protrude into the injection nozzle inside pressure resistant vessel, the arrival end of injection pipe, which is equipped with, can be used for cleaning injection pipe inner passage
Triple valve, triple valve include valve body, and valve body includes T-type channel, and T-type channel includes horizontal channel and Vertical Channel, horizontal channel
Single port is the medium inlet end entered for medium, and horizontal channel another port is the Butterworth Hatch entered for cleansing medium, vertically
Connection is docked with injection pipe in channel, is equipped in the T-type channel between conversion medium arrival end, Butterworth Hatch, Vertical Channel
The core of link relation, the end of injection pipe be also connected with can the operating mechanism that moves up and down of Driver injection pipe, injection pipe
The hollow cavity of inner pipe passway and interfaced guide rod constitutes medium injection channel, and medium is sprayed by injection pipe by injection nozzle
Enter in pressure resistant vessel.Wherein, 1 is pressure resistant vessel, and 2 be injection nozzle, and 3 be injection pipe, and 4 be the connecting flange of pressure resistant vessel, and 5 are
The connecting flange of injecting mechanism, 6 be three-way diverter valve, and 7 be transition bindiny mechanism, and 8 be protection medium inlet, and 9 be filler, 10
It is gland, 11 be check-valves, and 12 be check-valves flap, and 13 be check-valves torsional spring, and 14 be filler, and 15 be filler pressing sleeve, 16
It is limit sleeve, 17 be guide rod, and 18 be pillar, and 19 be leader nut, and 20 be driving device, and 21 be injection pipe to interface, and 22 be three
Port valve, 23 be medium inlet, 24 be rinse mouth.
In above structure, the connecting flange 4 of pressure resistant vessel and the connecting flange 5 of injecting mechanism are connected, and will can entirely be infused
Enter mechanism to be installed on pressure resistant vessel 1.In order to ensure the medium in the medium and pressure resistant vessel of injection is sufficiently mixed, sprayed in injection
Many apertures are opened up on mouth 2, medium is sprayed by many apertures on injection nozzle 2, can be filled with the medium in pressure resistant vessel 1
Divide mixing.One end of injection pipe 3 generallys use screw thread and links together with injection nozzle 2, and the other end of injection pipe 3 is designed to connect
Acting flange.17 lower end of guide rod is designed to that anti-rotation flange, the connecting flange of injection pipe 3 and the anti-rotation flange of guide rod generally use bolt
Nut links into an integrated entity, and the upper end of guide rod 17 has to interface 21, the Vertical Channel outlet end to buckle 21 and triple valve 22
Docking, guide rod 17, injection pipe 3, connecting flange, anti-rotation flange and guide rod 17 be all designed to it is hollow, therefore system run
When can pass through the medium inlet 23 of triple valve 22, guide rod 17, anti-rotation flange, connecting flange, injection pipe 3 and injection nozzle
2 into pressure resistant vessel 1 medium required for injected system.Triplet commutation is provided in the top of the connecting flange 5 of injecting mechanism
Valve 6, usual three-way diverter valve 6 uses T-type three-way ball valve, in injecting mechanism normal use, the straight channel of three-way diverter valve 6 with
And wing passage is opened, injection pipe 3 is passed through from 6 straight channel of three-way diverter valve.Furthermore it is possible to the wing passage for passing through three-way diverter valve
The injection protection medium into pressure resistant vessel 1.Transition bindiny mechanism 7 is set in the top of three-way diverter valve 6, in transition bindiny mechanism
7 are equipped with protection medium inlet 8.It is provided with filler 9 and gland 10 in the top of transition bindiny mechanism 7, to prevent from holding
Pressure medium in pressure vessel 1 is leaked by the outside of injection pipe 3.Check-valves 11 is provided in the top of gland 10.?
The top of check-valves is provided with filler 14 and filler pressing sleeve 15, and the dual-seal of filler 14 and filler 9 can more efficiently prevent from
Pressure medium in pressure resistant vessel 1 is leaked into atmosphere by the outside (i.e. installation passage) of injection pipe 3.
Guide rod 17, using being threadedly engaged, generallys use T shape and is threadedly engaged, T shape screw thread can transmit more with leader nut 19
Big power.Leader nut 19 is installed in driving device 20, and driving device 20 can make 19 rotary motion of leader nut, driving dress
Gear assembly, electric device, handwheel or tommy bar can be used as needed by setting.The cooperation and limit of pillar 18 and anti-rotation flange
System, makes anti-rotation flange that can only against pillar 18 and moves up and down, and cannot make rotating motion, and is fixedly connected on anti-rotation flange
Guide rod 17, connecting flange, injection pipe 3, injection nozzle 2 together moves up and down simultaneously.Driving device 20 drives leader nut
19 rotate simultaneously, by being threadedly engaged for guide rod 17 and leader nut 19, cannot do with leader nut 19 since guide rod is restricted
Rotary motion, therefore, the rotary motion of leader nut 19 translate into the elevating movement of guide rod 17.
Contact of the limit sleeve 16 with anti-rotation flange is for positioning the position of injecting mechanism in normal work.
In injecting mechanism normal use, the medium inlet 23 of triple valve 22 and guide rod 17 interface 21 is connected to, and
The rinse mouth 24 of triple valve 22 is in close state.Medium passes through the medium inlet 23 of triple valve 22, to interface 21, guide rod
17, injection pipe 3 and injection nozzle 2 injected media into pressure resistant vessel 1.Long-term medium of the injection with solid particle or easily bonding,
Susceptible to plugging medium will lead to aperture portion in injection nozzle 2 and block, will affect the effective of medium when blocking to a certain extent
Injection, at this moment needs to rinse, switching three-way valve 22, the medium inlet 23 of triple valve 22 is closed, and opens rushing for triple valve 22
Wash mouth 24, at this time by rinse mouth 24 will without solid particle, there is no dysgenic clean medium to entire injection dress to system
It sets and carries out injection flushing, until the solid particle medium and cementing medium that will be blocked in 2 aperture of injection nozzle rinse do completely
Only, then switching three-way valve 22, rinse mouth 24 is closed, and medium inlet 23 is opened, and works normally injection device again.It adopts
It is easy to operate that blockage problem is solved with the method for above-mentioned flushing, and it is out of service not need whole system.But it is utilized in
The method that line rinses cannot ensure to solve the problems, such as completely blocking, ask once not can solve blocking using the method for on-line rinsing
Topic then solves the problems, such as that, in order to implement this method, the present apparatus is logical using the method for Hand scarf, maintenance or replacement injection nozzle 2
Over-driving device 20 carry out rotating guide nut 19 promoted guide rod 17 and the injection pipe being fixed together with guide rod 17 3,
Injection nozzle 2, the medium in pressure resistant vessel 1 with solid particle and easily bonding, easily blocking in order to prevent in lifting process
Medium enter in injection device, by protecting medium inlet 8 to inject clean medium, pressure medium is not less than pressure-bearing appearance
Pressure medium in device 1.Continuing to lift up the components such as guide rod 17 will cut when injection nozzle 2 is lifted higher than three-way diverter valve 6
Change three-way diverter valve 6, after switching, the straight channel of three-way diverter valve 6 is closed, the wing passage of three-way diverter valve 6 still with pressure resistant vessel 1
It is identical, at this point, injecting clean medium by wing passage, capableing of the medium of better anti-stop-band solid particle or easily bonding, is easily stifled
The medium of plug enters injecting mechanism, the components such as guide rod 17 is further promoted, when injection nozzle 2 is lifted higher than check-valves 11
When, check-valves flap 12 is automatically closed under the effect of check-valves torsional spring 13, at this time due to the three-way diverter valve of injecting mechanism 6 and only
It returns valve 11 to simultaneously close off, it can be ensured that the medium in pressure resistant vessel 1 will not pass through injection device external leakage.Further promote guide rod
17 equal components, the medium note when injection nozzle 2 is lifted higher than filler pressing sleeve 15, including injection nozzle 2 and injection pipe 3
Enter the confined area that mechanism has had been detached from entire injection device, at this point, removing the spiral shell of connecting flange between injection pipe 3 and guide rod 17
Bolt nut can remove injection nozzle 2 and 3 entirety of injection pipe from injection device.So as to injection nozzle 2, injection
Pipe 3 is cleared up, repaired or is replaced, and is then reinstalled and is reset on injection device again, and installation steps are opposite with demounting procedure
?.During the entire process of the disassembly of injecting mechanism, cleaning, maintenance or replacement and installation reset, not needing will be entire
System is out of service.
The injection device of the utility model not only accomplish not need system is out of service can be to injection nozzle 2 and injection pipe
3 carry out Hand scarf, maintenance and replacement, and can ensure that the movement to system injected media is continuous continual.Therefore,
The medium injection device of the utility model can be truly realized the system of not needing it is out of service can to injection nozzle and injection pipe into
Row Hand scarf, maintenance and the purpose of replacement.
The utility model is not limited to above-mentioned specific embodiment, and persons skilled in the art are according to the utility model public affairs
The content opened can be implemented the utility model or all using the utility model using other a variety of specific embodiments
Design structure and thinking, do simple change or change, both fall within the protection scope of the utility model.
Claims (5)
1. one kind can connect to pressure system injected media and the device of energy on-line rinsing and maintenance, including with pressure resistant vessel open end
The injecting mechanism connect, pressure resistant vessel open end are equipped with media inlet channel, and injecting mechanism includes and the media inlet channel connection
Installation passage, it is characterised in that: the injecting mechanism further includes on and off installation passage and media inlet channel connection
Switch valve, injection pipe is combined in installation passage, the outlet end of injection pipe is equipped with logical across the medium inlet of pressure resistant vessel
Road and protrude into the injection nozzle inside pressure resistant vessel, the arrival end of injection pipe, which is equipped with, can be used for cleaning injection pipe inner passage
Triple valve, triple valve include valve body, and valve body includes T-type channel, and T-type channel includes horizontal channel and Vertical Channel, horizontal channel
Single port is the medium inlet end entered for medium, and horizontal channel another port is the Butterworth Hatch entered for cleansing medium, vertically
Connection is docked with injection pipe in channel, is equipped in the T-type channel between conversion medium arrival end, Butterworth Hatch, Vertical Channel
The core of link relation.
2. according to claim 1 can be to pressure system injected media and the device of energy on-line rinsing and maintenance, feature
Be: the arrival end of the injection pipe be connected with can the operating mechanism that moves up and down of Driver injection pipe, the operating mechanism and
The check-valves of on and off installation passage is additionally provided between switch valve, the injecting mechanism passes through switch valve and check-valves and Jie
The biswitch structure on flow of media path is formed between matter access road.
3. according to claim 2 can be to pressure system injected media and the device of energy on-line rinsing and maintenance, feature
Be: the check-valves includes valve body, valve channel and valve chamber connection, and valve chamber is grasped towards switch valve side, valve channel direction
Make mechanism one end, one end end face that valve channel is connect with valve chamber is hinged with flap, and the hinged end of flap, which is equipped with, drives flap certainly
By holding the torsional spring towards valve body channel direction rotation trend, the injection pipe sequentially passes through valve relative to the other end of nozzle
Check-valves is stretched out behind the path of chamber, valve channel under connection state and is connect with operating mechanism, and the free end of the flap is squeezed
It is pressed on injection tube wall.
4. according to claim 3 can be to pressure system injected media and the device of energy on-line rinsing and maintenance, feature
Be: the switch valve uses three-way diverter valve, and three-way diverter valve includes valve body, spool is equipped in body cavity, spool is equipped with T
Three circulation passage of type, triplet commutation valve body is affixed by transition bindiny mechanism and check valve body, and transition mechanism includes attachment base,
Attachment base is equipped with the attachment base channel of non-return valve valve chamber and three-way diverter valve body cavity, and the transition bindiny mechanism also sets
There is the protection medium channel with attachment base channel connection, the three-way diverter valve passes through connecting flange and pressure resistant vessel open end
Ring flange connection, connecting flange be equipped with three-way diverter valve body cavity and with the media inlet channel connection of pressure resistant vessel
Connecting flange channel, the injection pipe pass through filler and filler across attachment base channel and injection pipe and attachment base channel
Gland is tightly connected, and the open end of the check valve body, which is connected on gland and is sealed by sealing ring, to be cooperated, non-return
Valve body open end is equipped with stud, and stud sequentially passes through check valve body open end end edge, gland, transition bindiny mechanism
Afterwards with nut check.
5. according to claim 4 can be to pressure system injected media and the device of energy on-line rinsing and maintenance, feature
Be: the operating mechanism includes the guide rod docked with injection pipe, the hollow channel of guide rod and the inner pipe passway connection of injection pipe,
Guide rod is fixedly connected through anti-rotation flange with the connecting flange for being installed on injection tube end, and the guide rod other end, which is threaded with, leads
Stem nut, leader nut are installed in driving mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820879700.6U CN208311550U (en) | 2018-06-07 | 2018-06-07 | It is a kind of can to pressure system injected media and can on-line rinsing and maintenance device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820879700.6U CN208311550U (en) | 2018-06-07 | 2018-06-07 | It is a kind of can to pressure system injected media and can on-line rinsing and maintenance device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208311550U true CN208311550U (en) | 2019-01-01 |
Family
ID=64710701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820879700.6U Withdrawn - After Issue CN208311550U (en) | 2018-06-07 | 2018-06-07 | It is a kind of can to pressure system injected media and can on-line rinsing and maintenance device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208311550U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679265A (en) * | 2018-06-07 | 2018-10-19 | 超达阀门集团股份有限公司 | It is a kind of can to pressure system injected media and can on-line rinsing and repair device |
| CN114259944A (en) * | 2022-01-04 | 2022-04-01 | 荣成碳纤维科技有限公司 | Carbon fiber polymerization liquid auxiliary material injection method and device thereof |
-
2018
- 2018-06-07 CN CN201820879700.6U patent/CN208311550U/en not_active Withdrawn - After Issue
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108679265A (en) * | 2018-06-07 | 2018-10-19 | 超达阀门集团股份有限公司 | It is a kind of can to pressure system injected media and can on-line rinsing and repair device |
| CN108679265B (en) * | 2018-06-07 | 2023-06-27 | 超达阀门集团股份有限公司 | Device capable of injecting medium into pressure system and on-line flushing and maintenance |
| CN114259944A (en) * | 2022-01-04 | 2022-04-01 | 荣成碳纤维科技有限公司 | Carbon fiber polymerization liquid auxiliary material injection method and device thereof |
| CN114259944B (en) * | 2022-01-04 | 2023-09-19 | 山东永成新材料有限公司 | Carbon fiber polymerization liquid auxiliary material injection method and device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20190101 Effective date of abandoning: 20230627 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20190101 Effective date of abandoning: 20230627 |