CN108644499A - Dredging pipe leakproof connection device - Google Patents
Dredging pipe leakproof connection device Download PDFInfo
- Publication number
- CN108644499A CN108644499A CN201810431560.0A CN201810431560A CN108644499A CN 108644499 A CN108644499 A CN 108644499A CN 201810431560 A CN201810431560 A CN 201810431560A CN 108644499 A CN108644499 A CN 108644499A
- Authority
- CN
- China
- Prior art keywords
- balance
- dredging pipe
- tube body
- locking
- ring cylinder
- 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.)
- Granted
Links
- 238000007789 sealing Methods 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 10
- 230000015572 biosynthetic process Effects 0.000 claims description 2
- 239000012780 transparent material Substances 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 abstract description 5
- 238000005299 abrasion Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000002002 slurry Substances 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000003643 water by type Substances 0.000 description 2
- 206010044565 Tremor Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/02—Flanged joints the flanges being connected by members tensioned axially
- F16L23/032—Flanged joints the flanges being connected by members tensioned axially characterised by the shape or composition of the flanges
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/16—Flanged joints characterised by the sealing means
- F16L23/18—Flanged joints characterised by the sealing means the sealing means being rings
- F16L23/22—Flanged joints characterised by the sealing means the sealing means being rings made exclusively of a material other than metal
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D5/00—Protection or supervision of installations
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The present invention relates to a kind of dredging pipe leakproof connection device, this dredging pipe leakproof connection device includes balancing component, locking element and anchorage bar；Balancing component includes fixed column, and in the upper end of the fixed column through fastening through-hole is offered, flexible balance ring cylinder is arranged on the hole wall of the fastening through-hole；One end of balance channel is connected to balance ring cylinder, and the other end is connected to the statocyst being attached on inboard wall of tube body；It is provided with chisel teeth on the inner tube wall of the balance ring cylinder；Locking element includes locking post；The anchorage bar includes equilibrium area, is provided in equilibrium area and balance gear, the slope surface sliding on the inclined-plane and chisel teeth of the balance gear are affixed；The attachment device structure novel effectively prevent the exceptional leakage of connector, when especially facing mud pressure variations, can ensure that the smooth of dredging operation carries out；Simultaneously can it is clear dredging pipe end connection, find, safeguard in time convenient for maintenance department.
Description
Technical field
The present invention relates to a kind of dredging duct members, are a kind of attachment devices particularly.
Background technology
In dredging and reclamation construction operation, construction ship by dredging pipe by the slurry transportation of riverbed bottom to formulate position
It sets, since transmission range is relatively long, dredging pipe needs are assembled according to landform and orientation at the construction field (site), in an operation
After area completes construction, dismounting is needed to arrive another operation area assembling again；Then, in entire construction process, dredging pipe needs repeatedly
Dismounting；The dismounting connecting component of dredging pipe uses flange ring structure at present, needs the both ends by dredging pipe finely right when mounted
Standard prevents junction from generating gap, and operating process is complicated and technology requires height；It is also needed to during use after the completion of connection
The movement of careful control dredging pipe, avoids connector from wearing, and then causes entire dredging pipe dredging unsmooth；In addition, being passed in mud
During defeated, due to overpressure shakiness, junction is susceptible to gap, influences dredging pipe normal operation；The connection of dredging pipe
Mouthful blocked by flange ring, a long way off can not anomaly situation in time, it is late when leaking, to dredging operation
Bring very big interference.
Invention content
In view of the above-mentioned problems, the present invention provides a kind of dredging pipe leakproof connection device, the attachment device structure novel, solely
Spy, effectively prevent the exceptional leakage of connector, when especially facing mud pressure variations, can ensure dredging operation it is smooth into
Row；Simultaneously can it is clear dredging pipe end connection, find, safeguard in time convenient for maintenance department.
To solve the above problems, the technical solution adopted in the present invention is：This dredging pipe leakproof connection device includes to set
Set the balancing component in tube body end, locking element and the anchorage bar being connected between balancing component, locking element；
The periphery for being equally distributed on tube body one end of the balancing component rotational symmetry, the balancing component include perpendicular to tube body
The fixed column of axis, fixed column are fixedly connected with the tube body；Run through in the upper end of the fixed column and offers and the tube body
The parallel fastening through-hole of axis, flexible balance ring cylinder is set on the hole wall of the fastening through-hole；Along the fixed column
Axis offer balance channel, one end of the balance channel is connected to hollow balance ring cylinder, the other end and is attached to pipe
Statocyst connection on internal wall, elastic；It is formed by confined space and fills in statocyst, balance channel, balance ring cylinder
There is equilibrium liquid；
The chisel teeth of hard, the axis of the head and the tail line and balance ring cylinder of chisel teeth are provided on the inner tube wall of the balance ring cylinder
Line is parallel；
The periphery for being equally distributed on the tube body other end of the locking element rotational symmetry, the locking element include perpendicular to pipe
The locking post of body, in the upper end of the locking post through the locking hole parallel with the axis of the tube body is offered, in locking hole
Interior carve is equipped with thread groove；
The anchorage bar includes equilibrium area and locking area, is provided with and the matched balance gear of the chisel teeth, institute in equilibrium area
The slope surface sliding for stating the inclined-plane and chisel teeth of balance gear is affixed；It is provided with and the matched screw thread rib of the thread groove in locking area；
In anchorage bar integrally formed fastener head is provided with close to the side rod end of equilibrium area；It is directed toward fastening in the flat front end of the chisel teeth
Head.
The beneficial effects of the invention are as follows：Assembling, connection dredging pipe when, dredging pipe assemble balancing component one end with it is another
One end alignment of dredging pipe assembly locking element；Anchorage bar is inserted into from fastening through-hole, is pierced by from locking hole, reverses anchorage bar
Make in screw thread rib precession thread groove thereon；During anchorage bar penetrates, the sliding of balance gear opposite wedge tooth, and by balance ring
Cylinder, which squeezes, becomes flat；After the pipe end of fastening two dredging pipes of rod locking, the equilibrium area on anchorage bar is matched with balance ring cylinder face
Contact；The both ends tight engagement of dredging pipe at this time；When mud is flowed through from dredging pipe, mud generates liquid to the inner wall of dredging pipe
Pressure, and then statocyst compressing is become flat, the equilibrium liquid in statocyst enters along balance channel in balance ring cylinder, promotes balance ring
Cylinder expansion；Volume with balance ring cylinder becomes larger, and the internal diameter of balance ring cylinder becomes smaller, then the chisel teeth and balance on balance ring cylinder
Tooth mutually squeeze and it is opposite slide, the extruding force by chisel teeth, balance tooth contact inclined-plane transmission after, generate along dredging pipe axis
Upward extruding force, and then promote the port of two dredging pipes is closer to be bonded together.
Traditional dredging pipe connection is only capable of conveying mud under enough guarantee constant speeds or lower-speed state, in high-pressure delivery mud
Or conveying mud pressure it is unstable when, the gap of connector, which is susceptible to, changes and then generates leakage, while the pressure change
It can cause the abrasion between the components such as anchorage bar and locking element so that attachment device is easily damaged；And when using the present invention, mud
Slurry discharge pressure is bigger, and the engaging force for dredging pipe port is stronger；And when tube voltage drop is low, the engaging force of pipe end is automatically adjusted, is had
Anchorage bar stripped thread, abrasion caused by effect prevents pipe end over-engagement；To realize dynamic adjustment, no matter dredging pipe high pressure, low
When pressure conveying or unstable discharge pressure, which can provide suitable engaging force for the joint of pipe end,
Not only ensure joint ne-leakage, but also can maximumlly protect the components such as anchorage bar, locking element, and reduce its abrasion, Jin Erti
The service life and engagement seal of high attachment device；The stabilization of dredging operation, smooth progress is effectively ensured.
Preferably, 90 ° of fold forms connection rings to the pipe end of dredging pipe outward；In order to increase the contact surface of engagement mouth
Product, and then improve tightness.
Preferably, this dredging pipe leakproof connection device further includes having sealing shaping loop, the outer shroud of the sealing shaping loop
Wall is bonded with the internal ring wall of dredging pipe；The external stability of the sealing shaping loop is provided with hollow elastic sealing ring, in institute
It states and is communicated with hollow indication buoy on sealing ring；Indicator solution is filled in elastic sealing ring；The end of dredging pipe when installation
It is set in the outside of sealing shaping loop, between elastic sealing ring is placed on two dredging pipes, with tightening for anchorage bar, elasticity
Sealing ring is deformed, and internal indicator solution enters in indication buoy；In pipe presses dynamic changing process, elastic elasticity is close
Seal ring can improve the seal of dredging pipe interface, effectively prevent leaking；In addition, there are the peaces such as gap in the interface when dredging pipe
When full hidden danger, the volume of elastic sealing ring will change therewith, and then the expansion amplitude of indication buoy will change；It safeguards
Personnel can intuitively, easily observe, convenient for reminding maintenance personnel to safeguard in time, effectively prevent leakage situation to deteriorate, in turn
Protect the cleaning in waters.
Preferably, the indication buoy is made by transparent material, doped with fluorescent liquid in indicator solution；In order to improve
The boldness of indication buoy, and then facilitate staff's routine inspection, safeguard.
Description of the drawings
Fig. 1 is the cross section structure schematic diagram of this dredging pipe leakproof connection device one embodiment.
Fig. 2 is the side structure schematic view of balancing component in embodiment illustrated in fig. 1.
Specific implementation mode
Embodiment：
In Fig. 1, embodiment shown in Fig. 2, this dredging pipe leakproof connection device includes the balance member being arranged in tube body end
Part 1, locking element 2 and the anchorage bar 3 being connected between balancing component 1, locking element 2；90 ° of the fold outward of the pipe end of dredging pipe
Form connection ring；
The periphery for being equally distributed on 4 one end of tube body of 1 rotational symmetry of the balancing component, the balancing component 1 include perpendicular to
The fixed column of 4 axis of tube body, fixed column are fixedly connected with the tube body 4；In the upper end of the fixed column through offering and institute
The parallel fastening through-hole of the axis of tube body 4 is stated, flexible balance ring cylinder 5 is set on the hole wall of the fastening through-hole；Along institute
The axis for stating fixed column offers balance channel 51, and one end of the balance channel 51 is connected to hollow balance ring cylinder 5, another
It holds and is attached on 4 inner wall of tube body, elastic statocyst 52 and is connected to；In statocyst 52, balance channel 51,5 institute of balance ring cylinder
Equilibrium liquid is filled in the confined space of formation；
The chisel teeth 53 of hard, the head and the tail line and balance ring of chisel teeth 53 are provided on the inner tube wall of the balance ring cylinder 5
The axis of cylinder 5 is parallel；
The periphery for being equally distributed on 4 other end of tube body of 2 rotational symmetry of the locking element, the locking element 2 include vertical
In the locking post of tube body 4, runs through in the upper end of the locking post and offers the locking hole 21 parallel with the axis of the tube body 4,
It is carved in locking hole 21 and is equipped with thread groove；
The anchorage bar 3 includes equilibrium area 31 and locking area 32, is provided in equilibrium area 31 matched with the chisel teeth 53
Balance gear, the inclined-plane of the balance gear are affixed with the slope surface sliding of chisel teeth 53；It is provided with and the thread groove in locking area 32
Matched screw thread rib；In anchorage bar 3 integrally formed fastener head 33 is provided with close to the side rod end of equilibrium area 31；The wedge shape
It is directed toward fastener head 33 in the flat front end of tooth 53.
In assembling, connection dredging pipe, dredging pipe assembles one end of balancing component 1 and another dredging pipe assembles locking member
One end of part 2 is aligned；Anchorage bar 3 is inserted into from fastening through-hole, is pierced by from locking hole 21, torsion anchorage bar 3 makes spiral shell thereon
In line rib precession thread groove；During anchorage bar 3 penetrates, balance gear opposite wedge tooth 53 slides, and balance ring cylinder 5 is squeezed and is become
It is flat；After the pipe end that anchorage bar 3 locks two dredging pipes, the equilibrium area 31 on anchorage bar 3 is matched with 5 face of balance ring cylinder to be connect
It touches；The both ends tight engagement of dredging pipe at this time；When mud is flowed through from dredging pipe, mud generates hydraulic pressure to the inner wall of dredging pipe,
And then the compressing of statocyst 52 is become flat, the equilibrium liquid in statocyst 52 enters along balance channel 51 in balance ring cylinder 5, promotes to put down
The ring cylinder 5 that weighs expands；Volume with balance ring cylinder 5 becomes larger, and the internal diameter of balance ring cylinder 5 becomes smaller, then the wedge shape on balance ring cylinder 5
Tooth 53 and balance gear mutually squeezes and it is opposite slide, the extruding force by chisel teeth 53, balance tooth contact inclined-plane transmission after, produce
The raw extruding force in dredging pipe axial direction, and then promote the port of two dredging pipes is closer to be bonded together.
Traditional dredging pipe connection is only capable of conveying mud under enough guarantee constant speeds or lower-speed state, in high-pressure delivery mud
Or conveying mud pressure it is unstable when, the gap of connector, which is susceptible to, changes and then generates leakage, while the pressure change
It can cause the abrasion between the components such as anchorage bar 3 and locking element 2 so that attachment device is easily damaged；And when using the present invention,
Slurry transportation pressure is bigger, and the engaging force for dredging pipe port is stronger；And when tube voltage drop is low, the engaging force of pipe end is automatically adjusted,
3 stripped thread of anchorage bar, abrasion caused by effectivelying prevent pipe end over-engagement；To realize dynamic adjustment, no matter dredging pipe high pressure,
When low-pressure delivery or unstable discharge pressure, which can provide suitable engagement for the joint of pipe end
Power had not only ensured joint ne-leakage, but also can maximumlly protect the components such as anchorage bar 3, locking element 2, reduced its abrasion, into
And improve the service life and engagement seal of attachment device；The stabilization of dredging operation, smooth progress is effectively ensured.
In addition, in the present embodiment, this dredging pipe leakproof connection device further includes having sealing shaping loop 6, and the sealing is fixed
The external annulus of type circle 6 is bonded with the internal ring wall of dredging pipe；The external stability of the sealing shaping loop 6 is provided with hollow elasticity
Sealing ring 61 is communicated with hollow, transparent indication buoy 62 on the sealing ring；Filled with finger in elastic sealing ring 61
Show liquid, doped with fluorescent liquid in indicator solution；The end of dredging pipe is set in the outside of sealing shaping loop 6 when installation, will be elastic
Sealing ring 61 is placed between two dredging pipes, and with tightening for anchorage bar 3, elastic sealing ring 61 is deformed, internal
Indicator solution enters in indication buoy 62；In pipe presses dynamic changing process, elastic elastic sealing ring 61 can improve dredging pipe
The seal of interface effectively prevent leaking；In addition, when the security risks such as gap occurs in the interface of dredging pipe, elastic packing
The volume of ring 61 will change therewith, and then the expansion amplitude of indication buoy 62 will change；Maintenance personnel can it is intuitive,
It easily observes, convenient for reminding maintenance personnel to safeguard in time, leakage situation is effectively prevent to deteriorate, and then protect the clean of waters
Only.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (4)
1. a kind of dredging pipe leakproof connection device, this dredging pipe leakproof connection device includes to be arranged in tube body（4）It puts down end
Weigh element（1）, locking element（2）Be connected to balancing component（1）, locking element（2）Between anchorage bar（3）；Its feature exists
In：The balancing component（1）Rotational symmetry is equally distributed on tube body（4）The periphery of one end, the balancing component（1）Include vertical
Directly in tube body（4）The fixed column of axis, fixed column and the tube body（4）It is fixedly connected；Run through in the upper end of the fixed column and opens
Equipped with the tube body（4）The parallel fastening through-hole of axis, flexible balance is set on the hole wall of the fastening through-hole
Ring cylinder（5）；Axis along the fixed column offers balance channel（51）, the balance channel（51）One end with it is hollow flat
Weigh ring cylinder（5）Connection, the other end and is attached to tube body（4）Statocyst on inner wall, elastic（52）Connection；In statocyst
（52）, balance channel（51）, balance ring cylinder（5）It is formed by confined space and is filled with equilibrium liquid；In the balance ring cylinder（5）
Inner tube wall on be provided with the chisel teeth of hard（53）, chisel teeth（53）Head and the tail line and balance ring cylinder（5）Axis it is parallel；
The locking element（2）Rotational symmetry is equally distributed on tube body（4）The periphery of the other end, the locking element（2）Include vertical
Directly in tube body（4）Locking post, in the upper end of the locking post through offering and the tube body（4）The parallel locking of axis
Hole（21）, in locking hole（21）Interior carve is equipped with thread groove；The anchorage bar（3）It include equilibrium area（31）The locking area and（32）,
In equilibrium area（31）It is provided with and the chisel teeth（53）Matched balance gear, the inclined-plane and chisel teeth of the balance gear（53）'s
Slope surface sliding is affixed；In locking area（32）It is provided with and the matched screw thread rib of the thread groove；In anchorage bar（3）Close to equilibrium area
（31）Side rod end integrally formed be provided with fastener head（33）；The chisel teeth（53）Flat front end be directed toward fastener head
（33）.
2. dredging pipe leakproof connection device according to claim 1, it is characterised in that：The pipe end of dredging pipe turns down outward
90 ° of formation connection rings.
3. dredging pipe leakproof connection device according to claim 1 or 2, it is characterised in that：This dredging pipe leakproof connection fills
Set further includes having sealing shaping loop（6）, the sealing shaping loop（6）External annulus be bonded with the internal ring wall of dredging pipe；Described
Seal shaping loop（6）External stability be provided with hollow elastic sealing ring（61）, it is communicated on the sealing ring hollow
Indication buoy（62）；In elastic sealing ring（61）It is interior to be filled with indicator solution.
4. dredging pipe leakproof connection device according to claim 3, it is characterised in that：The indication buoy（62）By transparent
Material is made, doped with fluorescent liquid in indicator solution.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810431560.0A CN108644499B (en) | 2018-05-08 | 2018-05-08 | Dredging pipe leak-proof connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810431560.0A CN108644499B (en) | 2018-05-08 | 2018-05-08 | Dredging pipe leak-proof connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108644499A true CN108644499A (en) | 2018-10-12 |
| CN108644499B CN108644499B (en) | 2020-05-15 |
Family
ID=63749836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810431560.0A Active CN108644499B (en) | 2018-05-08 | 2018-05-08 | Dredging pipe leak-proof connecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108644499B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145830A (en) * | 2020-09-27 | 2020-12-29 | 广州华安消防有限公司 | Fire-fighting pipe fitting and installation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1558857A (en) * | 1976-01-28 | 1980-01-09 | Exxon Production Research Co | Apparatus and method for extermally testing conduit connections |
| SU712489A1 (en) * | 1978-07-19 | 1980-01-30 | Краснодарский Государственный Научно- Исследовательский И Проектный Институт Нефтяной Промышленности | Rotary blow-preventer |
| RU1811479C (en) * | 1991-01-11 | 1993-04-23 | Харьковский политехнический институт | Manipulator gripper |
| CN104165252A (en) * | 2013-05-19 | 2014-11-26 | 徐州市龙泰煤矿设备制造厂 | Novel pipe connecting sleeve structure |
| CN105042233A (en) * | 2015-09-19 | 2015-11-11 | 成都汇骏盟邦科技有限公司 | Sealed connecting mechanism for household blowing pipe |
| CN206114181U (en) * | 2016-09-30 | 2017-04-19 | 中国通信建设第二工程局有限公司 | Flange joint's threaded connection diaphragm -seal pressure gauge structure |
-
2018
- 2018-05-08 CN CN201810431560.0A patent/CN108644499B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1558857A (en) * | 1976-01-28 | 1980-01-09 | Exxon Production Research Co | Apparatus and method for extermally testing conduit connections |
| SU712489A1 (en) * | 1978-07-19 | 1980-01-30 | Краснодарский Государственный Научно- Исследовательский И Проектный Институт Нефтяной Промышленности | Rotary blow-preventer |
| RU1811479C (en) * | 1991-01-11 | 1993-04-23 | Харьковский политехнический институт | Manipulator gripper |
| CN104165252A (en) * | 2013-05-19 | 2014-11-26 | 徐州市龙泰煤矿设备制造厂 | Novel pipe connecting sleeve structure |
| CN105042233A (en) * | 2015-09-19 | 2015-11-11 | 成都汇骏盟邦科技有限公司 | Sealed connecting mechanism for household blowing pipe |
| CN206114181U (en) * | 2016-09-30 | 2017-04-19 | 中国通信建设第二工程局有限公司 | Flange joint's threaded connection diaphragm -seal pressure gauge structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112145830A (en) * | 2020-09-27 | 2020-12-29 | 广州华安消防有限公司 | Fire-fighting pipe fitting and installation method thereof |
| CN112145830B (en) * | 2020-09-27 | 2021-12-07 | 广州华安消防有限公司 | Installation method of fire-fighting pipe fitting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108644499B (en) | 2020-05-15 |
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| TA01 | Transfer of patent application right |
Effective date of registration: 20200417 Address after: 325000 No. 2, Lane 35, Huanglong Street, Lucheng District, Wenzhou City, Zhejiang Province Applicant after: Cai Meizhu Address before: 215000 villager committee of Xi Gang village, Ping Wang Town, Wujiang District, Suzhou, Jiangsu Applicant before: Hu Zhenqiang |
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Effective date of registration: 20201106 Address after: Third floor, complex building, Fenghuang Xincun real estate development company, Qimen County, Huangshan City, Anhui Province Patentee after: Qimen County Urban Construction Investment Development Co.,Ltd. Address before: 325000 No. 2, Lane 35, Huanglong Street, Lucheng District, Wenzhou City, Zhejiang Province Patentee before: Cai Meizhu |