CN106764393B - Adjustable column top device of one-section type rubber film sealing gas holder piston support - Google Patents
Adjustable column top device of one-section type rubber film sealing gas holder piston support Download PDFInfo
- Publication number
- CN106764393B CN106764393B CN201611225072.1A CN201611225072A CN106764393B CN 106764393 B CN106764393 B CN 106764393B CN 201611225072 A CN201611225072 A CN 201611225072A CN 106764393 B CN106764393 B CN 106764393B
- Authority
- CN
- China
- Prior art keywords
- piston
- shaped clamping
- column top
- hard rubber
- clamping groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17B—GAS-HOLDERS OF VARIABLE CAPACITY
- F17B1/00—Gas-holders of variable capacity
- F17B1/02—Details
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The invention discloses an adjustable column top device for a one-stage rubber membrane sealing gas holder piston support, which comprises a column top baffle, wherein the column top baffle is arranged at the top of a piston support column, the upper surface of the column top baffle is provided with a U-shaped clamping groove, a support piece is arranged in the U-shaped clamping groove, the support piece comprises a support chassis and a hard rubber block, the support piece is connected with the side wall of the U-shaped clamping groove in a sliding manner, a lifting adjusting device is arranged in the U-shaped clamping groove and corresponds to the lower surface of the support piece, and the lifting adjusting device is used for enabling two sides of the support piece to move along the side wall of the U-shaped clamping groove; the adjusting nut rotates to drive the adjusting bolt to move up and down, so that the hard rubber block is completely and tightly contacted with the radial beam of the central spherical shell of the piston; the invention has simple design, good adjusting effect and considerable economic benefit.
Description
Technical Field
The invention relates to an adjustable column top device for a one-section type rubber film sealed gas holder piston support.
Background
The piston support of the one-section rubber membrane sealing type gas holder is mainly used in a gas holder installation stage and an overhaul stage, as shown in figure 1, in the gas holder installation stage, a radial main beam of a piston center spherical shell is placed on the piston support, then a circumferential beam and a piston center spherical shell plate are laid, and in the installation stage, due to construction errors, when some piston supports are laid, the part of the piston supports are not in contact with the spherical shell; in some construction processes, the welding deformation does not contact the spherical shell after the installation is finished; and after operation, stress and strain are redistributed, the shape of the piston spherical shell is changed, and when the piston falls to the bottom for maintenance, a plurality of piston supports are not contacted with the piston spherical shell, so that the support function is not realized.
Because the support of a plurality of points plays a role of no support, when the load on the piston is added, the stress and the deformation of the position without the support point are larger, and the central spherical shell of the piston is a single-layer multi-ribbed type shallow spherical shell structure, and the structural form determines that the central spherical shell is a deformation sensitive structure, the control on the support point of the piston is very important for the safety of the operation of the piston.
In addition, the piston support top of the original single-section rubber membrane sealing type gas holder adopts a similar steel structure such as a round steel pipe and the like, the top of the piston support top is high in rigidity, when the piston slowly falls down from a high position, the piston has certain potential energy, when the piston is contacted with the piston support, a certain point or a plurality of points are always contacted firstly, and then huge potential energy is born by one point or a plurality of points, so that the piston support and the piston spherical shell are easily deformed greatly, and even damage is caused.
Disclosure of Invention
In order to solve the problems, the invention provides an adjustable column top device of a one-section type rubber membrane sealing gas holder piston support, which can relieve the deformation of a piston support and a piston spherical shell caused by the falling of a piston.
In order to achieve the purpose, the adjustable column top device for the one-section type rubber membrane sealing gas holder piston support comprises a column top baffle, wherein the column top baffle is arranged at the top of a piston support column, a U-shaped clamping groove is formed in the upper surface of the column top baffle, a supporting piece is arranged in the U-shaped clamping groove and is connected with the side wall of the U-shaped clamping groove in a sliding mode, a lifting adjusting device is arranged in the U-shaped clamping groove and corresponds to the lower surface of the supporting piece, and the lifting adjusting device is used for enabling two sides of the supporting piece to move along the side wall of the U-shaped clamping groove.
Further, support piece is including supporting chassis and hard rubber piece, it is provided with the recess to support the chassis, hard rubber piece sets firmly in the recess, the upper surface of hard rubber piece is higher than support the chassis, the inside steel pipe that is provided with of hard rubber piece, support chassis recess lateral wall be provided with the connecting piece of steel pipe looks adaptation, the tip of connecting piece passes the lateral wall of U type draw-in groove, with the lateral wall sliding connection of U type draw-in groove.
Further, the column top baffle is of a wedge-shaped structure, and the lower surface of the wedge-shaped structure is horizontally arranged at the top of the piston support column;
the lifting adjusting device comprises a plurality of adjusting bolts, bolt heads of the adjusting bolts are fixedly connected to the lower surface of the supporting piece, screw rods of the adjusting bolts sequentially penetrate through the U-shaped clamping grooves and the wedge-shaped column top baffle, and nuts are arranged in the U-shaped clamping grooves.
Furthermore, the column top baffle is a flat steel plate, the top of the support column is an inclined plane, and the flat steel plate is arranged on the inclined plane at the top of the support column;
the lifting adjusting device comprises a plurality of adjusting bolts, the bolt heads of the adjusting bolts are fixedly connected to the lower surface of the supporting piece, the screw rods of the adjusting bolts sequentially penetrate through the U-shaped clamping grooves and the column top baffle, and nuts are arranged in the U-shaped clamping grooves.
Further, the lifting adjusting device comprises a plurality of adjusting bolts, the U-shaped clamping groove and the column top baffle are provided with through holes matched with adjusting bolt screws, the adjusting bolt screws penetrate through the through holes and are hinged with the lower surface of the column top baffle, and nuts are arranged in the U-shaped clamping groove.
Further, the support member is a flexible support member.
According to the adjustable column top device for the one-section type rubber film sealed gas holder piston support, the adjusting screw bolt is driven to move up and down through the rotation of the adjusting nut, so that the hard rubber block is completely and tightly contacted with the radial beam of the spherical shell at the center of the piston; and thirdly, the hard rubber block is made of a flexible material, when the piston falls to the bottom, the flexible material absorbs most energy of the piston descending, the stress and deformation of the piston supporting upright post and the piston are ensured, and the safety of the gas holder is ensured.
Drawings
FIG. 1 is an elevational view of a piston support;
FIG. 2 is a diagram of the "A" node in FIG. one;
FIG. 3 is a cross-sectional view taken along line a-a, wherein the support column top baffles are wedge-shaped structures;
FIG. 4 is a schematic diagram of the mechanism of one embodiment of the present invention
FIG. 5 is a sectional view taken along line a-a;
FIG. 6 is a sectional view taken along line b-b;
FIG. 7 is a cross-sectional view taken along line c-c;
fig. 8 is a composition diagram of a hard rubber block.
In the figure, 1-column top baffle; 2-U-shaped clamping grooves; 3-hard rubber block chassis; 4-hard rubber block; 41-hard rubber block component; 42-round steel pipe; 5-hard rubber block connecting bolt; 6-adjusting the bolt; 7-adjusting the nut; 8-a piston support post; 9-piston center spherical shell radial beam.
Detailed Description
The invention is further described with reference to the accompanying drawings.
Example one
The adjustable flexible column top device supported by the one-section rubber film sealing piston comprises a column top baffle, wherein the column top baffle is arranged at the top of a piston supporting upright column, a U-shaped clamping groove is formed in the upper surface of the column top baffle, a supporting piece is arranged in the U-shaped clamping groove and is connected with the side wall of the U-shaped clamping groove in a sliding mode, a lifting adjusting device is arranged in the U-shaped clamping groove and corresponds to the lower surface of the supporting piece, and the lifting adjusting device is used for enabling two sides of the supporting piece to move along the side wall of the U-shaped clamping groove.
Example two
As shown in fig. 2 and 6, in combination with the first embodiment, the column top baffle 1 is a wedge-shaped structure, the inclination angle of the upper surface of the wedge-shaped structure is close to the inclination angle of the radial cross beam 9 of the central spherical shell of the piston, 2 adjusting bolt holes are respectively arranged on two opposite sides of the inclined surface of the wedge-shaped column top baffle 1, and the top of the piston support column 8 is processed to be flush; 4 adjusting bolt holes are formed in the bottom surface of the U-shaped clamping groove 2, and the adjusting bolt holes of the U-shaped clamping groove 2 correspond to the adjusting bolt holes of the column top baffle plate 1 one by one; welding a column top baffle plate 1 on a piston supporting column 8, welding a U-shaped clamping groove 2 on the column top baffle plate 1, wherein the adjusting bolt hole of the column top sealing plate 1 corresponds to the adjusting bolt hole of the U-shaped clamping groove 2 in position; a flexible supporting piece is arranged in the U-shaped clamping groove 2;
combine fig. 6 and fig. 8, flexible support includes hard rubber chassis 3 and hard rubber piece 4, hard rubber piece chassis 3 is provided with the recess, hard rubber piece 4 forms a whole with the hard rubber chassis in the recess of hard rubber chassis 3 through the adhesive rigid coupling, hard rubber piece 4 includes hard rubber piece subassembly 41 and circular steel tube 42, to wearing the trompil in the middle part of hard rubber piece subassembly 41, circular steel tube 42 is installed to the position that corresponds hard rubber piece subassembly 41 trompil, circular steel tube 42 takes effective connection with hard rubber piece subassembly 41, hard rubber piece chassis 3 recess lateral wall corresponds circular steel tube 42 and is provided with the position that corresponds each connecting bolt with the connecting bolt 5,U type draw-in groove 2 of circular steel tube 42 looks adaptation along vertical direction and is provided with the slip hole, each connecting bolt 5's tip passes the slip hole that corresponds respectively and the lateral wall sliding connection of U type draw-in groove 2.
Each adjusting bolt hole is provided with an adjusting bolt 6, the bolt head of each adjusting bolt 6 is fixedly connected to the lower surface of the hard rubber block chassis 3, the screw rod of each adjusting bolt 6 penetrates through the bottom of the U-shaped clamping groove 2 and the adjusting bolt hole of the column top baffle plate 1, and the nut 7 of each adjusting bolt is arranged in the U-shaped clamping groove 2; the adjusting nut 7 is adjusted to enable the hard rubber block 4 to slide along the sliding hole of the U-shaped clamping groove 2 and adjust the position of the radial beam of the central spherical shell of the piston, so that the upper surface of the hard rubber block 4 can be in full contact with the lower surface of the radial beam of the central spherical shell; the number of the adjusting bolts is 4, and the contact surface of the hard rubber block is in complete parallel contact with the lower flange surface of the piston center spherical shell by adjusting the up-down movement of the 4 adjusting bolts.
EXAMPLE III
As shown in fig. 3 and 5, in combination with the second embodiment, the wedge-shaped column top baffle 1 may also be a flat steel plate, the top of the support column 8 is an inclined surface, the flat steel plate is disposed on the inclined surface at the top of the support column 8, and the inclined angle of the flat steel plate is close to the inclination angle of the radial cross beam 9 of the spherical shell at the center of the piston.
Example four
As shown in fig. 4, according to the first embodiment, the column top baffle 1 is a flat plate horizontally and fixedly connected to the top of the support column 8, the U-shaped clamping groove 2 is welded to the column top baffle, the U-shaped clamping groove 2 and the column top baffle 1 are provided with through holes adapted to the screws of the adjusting bolts 6, the screws of the adjusting bolts pass through the through holes, the bolt heads of the adjusting bolts 6 are hinged to the lower surface of the flexible supporting member, and the nuts 7 are arranged in the U-shaped clamping grooves.
The flexible support piece includes hard rubber chassis 3 and hard rubber piece 4, hard rubber piece chassis 3 is provided with the recess, hard rubber piece 4 forms a whole with hard rubber chassis 3 in hard rubber chassis 3's recess through the adhesive rigid coupling, hard rubber piece 4 includes hard rubber piece subassembly 41 and circular steel tube 42, to wearing the trompil in the middle part of hard rubber piece subassembly 41, correspond the position of hard rubber piece subassembly 41 trompil and install circular steel tube 42, circular steel tube 42 takes effective connection with hard rubber piece subassembly 41, hard rubber piece chassis 3 recess lateral wall corresponds circular steel tube 42 and is provided with the position that corresponds each connecting bolt with the connecting bolt 5,U type draw-in groove 2 of circular steel tube 42 looks adaptation and is provided with the slip hole along vertical direction, each connecting bolt 5's tip passes the lateral wall sliding connection of corresponding slip hole and U type draw-in groove 2 respectively. Two ends of the hard rubber block 4 respectively slide along the sliding holes of the U-shaped clamping grooves 2 and are adjusted to the position of the radial beam of the central spherical shell of the piston through adjusting the adjusting nuts 7, so that the upper surface of the hard rubber block 4 is parallel to the lower surface of the radial beam of the central spherical shell and can be fully contacted;
the working process of the adjustable flexible column top device supported by the one-section rubber membrane sealing piston comprises the following steps of laying a manufactured piston center spherical shell radial beam 9 on the adjustable flexible column top device during piston construction, tightly supporting a hard rubber block 4 by rotating an adjusting nut 7, and adjusting the hard rubber block 4 one by one after the piston construction is finished to ensure the reliable force transmission of each supporting point of the piston center spherical shell radial beam 9, as shown in figure 1;
when the piston is debugged or overhauled, the gas holder diffusing device is completely opened, the gas holder piston slowly descends, and when the piston contacts with the piston support, the potential energy of the piston is instantly reduced to zero;
after the piston rises, all components of the piston center spherical shell are stressed and redistributed, the deformation of all the components is redistributed, after the piston falls down, the contact state of all supporting points of the piston center spherical shell radial beam 9 and the hard rubber block 4 arranged on the top of the piston supporting upright post 8 is changed, the position of the hard rubber block is adjusted by rotating the adjusting nut 7 through the wrench, the height is reduced, the height is raised, and the complete contact of the hard rubber block 4 and the piston center spherical shell radial beam 9 is ensured.
According to the invention, the flexible adjustable column top device is arranged on the column top of the piston support column, and the positions and angles of the hard rubber block and the hard rubber block chassis are adjusted by the adjusting nut, so that the piston support and the gas holder piston are completely and effectively contacted, and the stress safety after the piston is arranged and falls to the bottom is ensured; secondly, because the top of the column top device is provided with the hard rubber block which is made of flexible material, when the piston falls to the bottom, the piston firstly contacts the hard rubber block, and the hard rubber block absorbs the potential energy when the piston descends, thereby ensuring the safety of the piston component.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are also included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.
Claims (2)
1. An adjustable column top device of a one-stage rubber membrane sealed gas holder piston support is characterized by comprising a column top baffle, wherein the column top baffle is arranged at the top of a piston support column, a U-shaped clamping groove is formed in the upper surface of the column top baffle, a supporting piece is arranged in the U-shaped clamping groove and is connected with the side wall of the U-shaped clamping groove in a sliding mode, a lifting adjusting device is arranged in the U-shaped clamping groove and corresponds to the lower surface of the supporting piece, and the lifting adjusting device is used for enabling two sides of the supporting piece to move along the side wall of the U-shaped clamping groove;
the supporting part comprises a supporting chassis and a hard rubber block, the supporting chassis is provided with a groove, the hard rubber block is fixedly arranged in the groove, the upper surface of the hard rubber block is higher than the supporting chassis, a steel pipe is arranged in the hard rubber block, the side wall of the groove of the supporting chassis is provided with a connecting piece matched with the steel pipe, and the connecting piece is connected with the side wall of the U-shaped clamping groove in a sliding manner;
the column top baffle is of a wedge-shaped structure, and the lower surface of the wedge-shaped structure is horizontally arranged at the top of the piston support column;
the lifting adjusting device comprises a plurality of adjusting bolts, the bolt heads of the adjusting bolts are fixedly connected to the lower surface of the supporting piece, the screw rods of the adjusting bolts sequentially penetrate through the U-shaped clamping grooves and the wedge-shaped column top baffle, and the nuts are arranged in the U-shaped clamping grooves;
the column top baffle is a flat steel plate, the top of the support column is an inclined plane, and the flat steel plate is arranged on the inclined plane at the top of the support column;
the lifting adjusting device comprises a plurality of adjusting bolts, the bolt heads of the adjusting bolts are fixedly connected to the lower surface of the supporting piece, the screw rods of the adjusting bolts sequentially penetrate through the U-shaped clamping grooves and the column top baffle, and nuts are arranged in the U-shaped clamping grooves;
during piston construction, a manufactured radial beam of a central spherical shell of the piston is laid on an adjustable flexible column jacking device, and a hard rubber block is tightly jacked by rotating an adjusting nut; after the piston construction is finished, the hard rubber blocks are adjusted one by one to ensure the supporting function of each supporting point of the radial beam of the spherical shell at the center of the piston;
when the piston is debugged or overhauled, the gas holder diffusing device is completely opened, the gas holder piston descends, when the piston contacts with the piston support, the potential energy of the piston descends, and the potential energy of the piston falling to the bottom is absorbed by the hard rubber block due to the fact that the flexible column top device is installed on the piston support column top;
after the piston rises, all components of the piston center spherical shell are stressed and redistributed, the deformation of all the components is redistributed, after the piston falls down, the contact state of all supporting points of the piston center spherical shell radial beam and the hard rubber block of the piston supporting upright post top device is changed, the position of the hard rubber block is adjusted by rotating the adjusting nut through the wrench, and the complete contact of the hard rubber block and the piston center spherical shell radial beam is ensured.
2. The adjustable column top device supported by the piston of the one-piece rubber membrane-sealed gas holder according to claim 1, wherein the lifting adjusting device comprises a plurality of adjusting bolts, the U-shaped clamping groove and the column top baffle are provided with through holes matched with the adjusting bolt screws, the adjusting bolt screws penetrate through the through holes and are hinged to the lower surface of the column top baffle, and nuts are arranged in the U-shaped clamping groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611225072.1A CN106764393B (en) | 2016-12-27 | 2016-12-27 | Adjustable column top device of one-section type rubber film sealing gas holder piston support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611225072.1A CN106764393B (en) | 2016-12-27 | 2016-12-27 | Adjustable column top device of one-section type rubber film sealing gas holder piston support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106764393A CN106764393A (en) | 2017-05-31 |
| CN106764393B true CN106764393B (en) | 2022-11-22 |
Family
ID=58921013
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611225072.1A Active CN106764393B (en) | 2016-12-27 | 2016-12-27 | Adjustable column top device of one-section type rubber film sealing gas holder piston support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106764393B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107061984B (en) * | 2017-06-23 | 2023-04-28 | 重庆科技学院 | Piston support system for gas holder aeroelastic model wind tunnel test |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB568880A (en) * | 1943-12-21 | 1945-04-24 | Oxley Engineering Company Ltd | Improvements in or relating to guide roller carriages for gasholders and like containers |
| CN100555806C (en) * | 2005-11-19 | 2009-10-28 | 无锡压缩机股份有限公司 | Adjustable elastic support structure |
| CN101280879A (en) * | 2008-05-16 | 2008-10-08 | 北京冠天能工程科技有限公司 | Supporting device of spherical storage tank and spherical storage tank with the same |
| TWM462775U (en) * | 2012-12-14 | 2013-10-01 | Shing Sheng Hardware Factory Co Ltd | Height and leveling adjustment base |
| CN203176712U (en) * | 2013-01-17 | 2013-09-04 | 宝钢不锈钢有限公司 | Movable type stand pillar sealing device |
| CN203688342U (en) * | 2013-12-06 | 2014-07-02 | 天水锻压机床(集团)有限公司 | Cylinder plunger supporting device of steel tube hydrostatic testing machine |
| CN204920398U (en) * | 2015-06-23 | 2015-12-30 | 广东茂化建集团有限公司 | Single floating plate of outer floating of large -scale storage tank and two general installation rack of floating plate |
| CN105715940B (en) * | 2016-04-28 | 2017-10-13 | 中冶华天工程技术有限公司 | The rubber diaphragm sealed gas holder of one-part form of cylinder type gas holder reconstruction |
| CN205601061U (en) * | 2016-05-04 | 2016-09-28 | 重庆港乾机械有限公司 | Vaulting pole formula mould pressing accessory cooling device |
| CN206320507U (en) * | 2016-12-27 | 2017-07-11 | 中冶华天南京工程技术有限公司 | The adjustable capital device of the rubber diaphragm sealed gas cabinet piston support of one-part form |
-
2016
- 2016-12-27 CN CN201611225072.1A patent/CN106764393B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106764393A (en) | 2017-05-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202532108U (en) | Adjustable base plate | |
| CN206955536U (en) | A kind of mobile screw lowering or hoisting gear | |
| CN106764393B (en) | Adjustable column top device of one-section type rubber film sealing gas holder piston support | |
| CN105699188A (en) | Device for detecting horizontal thrust of handrail | |
| KR20100058286A (en) | Screw jack for setting block of ship | |
| CN101738273A (en) | Loading device for compressive capacity test | |
| CN102954912B (en) | Balance lever machine | |
| CN203965232U (en) | A kind of adjustable two-way hinged-support of axial loading for Structural Engineering test | |
| CN215661736U (en) | Novel multicolor paint granulator | |
| CN104831643A (en) | Jacking device used for bridge construction | |
| CN213275228U (en) | Computer hardware hardness detection device capable of detecting different directions | |
| CN210313323U (en) | Simple lifting auxiliary device with clamping function | |
| CN110186618B (en) | Automobile mass center testing and positioning device | |
| CN211444934U (en) | Valve gap jacking equipment for valve maintenance | |
| CN105252255A (en) | Method for replacing pivotal bearing of floating crane through jacking device | |
| CN205465263U (en) | Adjustable crankshaft machining device | |
| CN206320507U (en) | The adjustable capital device of the rubber diaphragm sealed gas cabinet piston support of one-part form | |
| CN219389197U (en) | Support of water conservancy equipment is fixed to multi-angle | |
| CN103979471B (en) | Swing arm Anti-slanting safety lock detection equipment | |
| CN203095507U (en) | Lifting jack with detachable supporting arms | |
| CN213234270U (en) | Stair template strutting arrangement with adjustable | |
| CN220136852U (en) | Splitting tensile testing device for ultra-high-strength ultra-high-toughness concrete | |
| CN213336820U (en) | Durable testing arrangement of seat | |
| CN216074805U (en) | Adjustable pad pier for supporting large-scale component | |
| CN220415405U (en) | Tunnel excavation protection mechanism |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20221020 Address after: 210019 the Fuchun River East Street, Jianye District, Nanjing, Jiangsu 18 Applicant after: HUATIAN NANJING ENGINEERING & TECHNOLOGY CORPORATION, MCC Applicant after: HUATIAN ENGINEERING & TECHNOLOGY CORPORATION, MCC Address before: 210019 18 East Street, Fuchunjiang, Jianye District, Nanjing City, Jiangsu Province Applicant before: HUATIAN NANJING ENGINEERING & TECHNOLOGY CORPORATION, MCC |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |