CN109623253A - A kind of major diameter double tubesheet tube bank assembly technology - Google Patents
A kind of major diameter double tubesheet tube bank assembly technology Download PDFInfo
- Publication number
- CN109623253A CN109623253A CN201811267660.0A CN201811267660A CN109623253A CN 109623253 A CN109623253 A CN 109623253A CN 201811267660 A CN201811267660 A CN 201811267660A CN 109623253 A CN109623253 A CN 109623253A
- Authority
- CN
- China
- Prior art keywords
- tube
- heat exchanger
- perforated plate
- major diameter
- shell
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/053—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor
- B23K37/0533—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work aligning cylindrical work; Clamping devices therefor external pipe alignment clamps
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention discloses a kind of major diameter double tubesheets to restrain assembly technology, comprising the following steps: upper perforated plate and upper shell ring are assembled into upper perforated plate component by 1., by the bright vertical tube of upper perforated plate component；2. carrying out any sampling observation along upper perforated plate border using heat exchanger tube, the concentricity between upper perforated plate and support plate is reviewed and validate, heat exchanger tube is accessible after pore, then wears a certain number of heat exchanger tubes to rigid positioning；3. shell and lower perforated plate are assembled into lower perforated plate component；4. outer cover suit is outer in tube bank；5. carrying out any sampling observation along upper perforated plate border using heat exchanger tube, the concentricity between upper perforated plate, lower perforated plate and support plate is reviewed and validate, heat exchanger tube is accessible after pore, the final circumferential weld of spot welding shell side；6. dark poling；7. welding the final circumferential weld of shell side.The advantages such as this assembly technology can not only guarantee the smooth assembly of the two-tube panel device tube bank of major diameter, and it also has simple process feasible, easy to operate, and assembly period is short and manufacturing cost is low.
Description
Technical field
The present invention relates to major diameter double tubesheet equipment manufacturing technology fields, more particularly, to a kind of major diameter double tubesheet
Restrain assembly technology.
Background technique
Under domestic large equipment production background, the two-tube panel device of major diameter is increasing.Since equipment volume is big, diameter
Greatly, equipment weight, tube bank weight, heat exchanger tube number are more, so that the size of tube bundle support plate is very big, support plate single-piece weighs about several hundred kilograms
~1 ton.Support plate is full-circle spray pattern, and support plate and casing cylinder internal diameter unilateral gap are very small, only several millimeters, tube bundle support plate
Quantity is more, and tube bank assembly difficulty is increasing.The support plate of this structure is adjustable for enclosure location, if branch
Fagging positioning is inaccurate, and thousands of heat exchanger tubes will be made to can not be successfully and penetrate pore.How vertical tube, poling, shell and tube bank what
When be set with, be the manufacture key point of the two-tube panel device vertical tube of large-sized calandria type.
Major diameter double tubesheet is restrained, assembly vertical tube wears the assembly technologies such as heat exchanger tube, set casing and tube bank, existing
Having technology mainly has two kinds of assembly methods:
1. dark poling: after two pieces of tube sheets and shell are dressed up a closed cavity, heat exchanger tube is penetrated from upper perforated plate, from down tube
Plate is pierced by heat exchanger tube.But there is very big difficulty by the way of dark poling, due to design structure, support plate is in housings
Do not support, be for enclosure location it is adjustable, after upper perforated plate and shell dress up component, since diameter of the housing is big,
Support plate quantity is more, and support plate is overweight, and support plate must be sent into cylinder by tooling, several pieces of support plates is sent into so big straight
It inside the shell of diameter, is such as provided and delivered (as shown in Figure 1) using simple tooling, difficulty is larger, is such as provided and delivered using professional tooling, then cost
It is very high.Simultaneously as reasons in structure, the support plate of full-circle spray pattern, and only several millimeters of cylinder inboard wall unilateral gap, tooling is removed
Afterwards, for support plate because self weight can be generated and be moved down, the gap of support plate and cylinder can also move on to the lower part of cylinder, due to support plate with
Outer casing inner wall unilateral gap is too small, and people inside adjusts and is not easy, and the difficulty for installing support plate inside the shell is very big.Dark poling is deposited
The drawbacks of: support plate is assembled in casing cylinder, for dark place assemble, assembly difficulty is big, especially large cylinder, big support plate,
Difficulty can be very big, needs tooling to cooperate, precision is not easy to guarantee.
2. bright poling: dressing up upper perforated plate component using upper perforated plate and upper shell ring, lower perforated plate and lower shell ring dress up down tube board group
After part, two components and casing cylinder welding equipment, flaw detection, circular seam local heat treatment, flaw detection reinspection is dismantled casing cylinder, will be restrained
Support plate is packed into casing cylinder, vertical tube, upper perforated plate component is filled pull rod, distance sink tube, support plate, while wearing part positioning pipe
Tube sheet component is loaded in positioning, and the final circumferential weld of welding equipment cylinder is detected a flaw, circular seam local heat treatment, and appropriate all heat exchange are worn in flaw detection reinspection
Pipe.Although this mode can solve the deficiency of dark poling, but process is various when poling, need to carry out shell and middle cylinder
Multiple welding equipment, and two final circumferential welds of shell side are needed, assembly process is various.
Summary of the invention
It is double the technical problem to be solved by the present invention is to provide a kind of major diameter In view of the above shortcomings of the prior art
Tube sheet restrains assembly technology.
The technical solution adopted by the present invention to solve the technical problems is: a kind of major diameter double tubesheet tube bank assembly technology,
The following steps are included:
1) upper perforated plate for constituting the two-tube panel device of major diameter and upper shell ring are assembled into upper perforated plate component, then by upper perforated plate component
Bright vertical tube, bright vertical tube include dress pull rod, distance sink tube and dress support plate；
2) it tries heat exchanger tube on: carrying out any sampling observation along 0 °~360 ° borders of upper perforated plate using a certain number of heat exchanger tubes, check simultaneously
Confirm the concentricity of tube bank, it is ensured that heat exchanger tube accessible can pass through pore；
3) shell for constituting the two-tube panel device of major diameter and lower perforated plate are assembled into lower perforated plate component；
It 4) will be outside the horizontal tube bank being set in step 2 of shell；
5) it tries heat exchanger tube on again: carrying out any sampling observation, inspection along 0 °~360 ° borders of upper perforated plate using a certain number of heat exchanger tubes
Look into and confirm the concentricity of tube bank, heat exchanger tube is accessible after pore, then tenses using reinforcement plate, puts shell ring of burn-oning later
The final circumferential weld of shell side between shell；
6) remaining all heat exchanger tubes are fully completed poling operation by the way of dark poling；
7) the final circumferential weld of shell side is welded.
Further, in the step 1), the connection between upper perforated plate and upper shell ring uses docking structure.
Further, in the step 2, after the completion of trying plumber's sequence on, then a certain number of heat exchanger tubes are worn to rigidity
Positioning.
Further, in the step 2, the number of heat exchange tubes for trying pipe on is the 1/10~1/5 of heat exchanger tube total amount.
Further, in the step 3), the connection between lower perforated plate and shell uses docking structure.
Further, in the step 5), for try on again pipe number of heat exchange tubes be heat exchanger tube total amount 1/10~
1/5。
The beneficial effects of the present invention are:
Major diameter double tubesheet tube bank assembly technology of the invention guarantees upper, lower tube by using the technical measures for trying pipe on twice
Pore concentricity between plate and each support plate, i.e., verified between upper perforated plate and support plate in vertical tube by trying pipe on
Concentricity is verified same between upper perforated plate, lower perforated plate and support plate after by shell and bundle fitting again by pipe is tried on
Heart degree, to guarantee when carrying out the operation of subsequent dark poling, the accessible success poling of all heat exchanger tubes energy guarantees major diameter
Double tubesheet tube bank can be assembled smoothly；Meanwhile in the assembling process entirely restrained, only need successively to an only shell side most terminal ring
Seam carries out spot welding and welding equipment operation, and multiple welding equipment shell and intermediate shell ring are needed in existing bright poling technique to efficiently solve
The technical issues of；In addition, the present invention does not need the work using assembly support plate using bright vertical tube, the assembly technology of dark poling
Dress, so as to save the simple tooling that must be used in existing dark poling technique or special tooling, save the manufacture of equipment at
This；For panel device two-tube for major diameter, support plate is assembled in vitro in outer shell barrel, can be brought to the entire manufacturing very big
Convenience, to improve and guarantee the accuracy of manufacture of the two-tube panel device of major diameter.
Detailed description of the invention
Fig. 1 is the structural schematic diagram that simple tooling delivery support plate is used in existing dark poling technique；
Fig. 2 is the working state schematic representation for the two-tube panel device of major diameter completed using assembly technology of the present invention assembly；
Fig. 3 is the structural schematic diagram of bright vertical tube in assembly technology of the present invention；
Fig. 4, Fig. 5 are that set shell is crouched in assembly technology of the present invention in the structural schematic diagram outside tube bank；
In the figure, it is marked as 1- upper perforated plate, the upper shell ring of 2-, 3- pull rod, 4- heat exchanger tube, 5- shell, 6- lower perforated plate, 7- shell side most terminal ring
Seam, 8- support plate.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Fig. 2~Fig. 5, major diameter double tubesheet of the invention restrains assembly technology, comprising the following steps:
1) upper perforated plate 1 for constituting the two-tube panel device of major diameter and upper shell ring 2 are assembled into upper perforated plate component, then by upper tube board group
The bright vertical tube of part, bright vertical tube include dress pull rod 3, distance sink tube and dress support plate 8；
2) it tries heat exchanger tube on: carrying out any sampling observation along 0 °~360 ° borders of upper perforated plate using a certain number of heat exchanger tubes 4, check simultaneously
Confirm the concentricity of tube bank, it is ensured that heat exchanger tube 4 accessible can pass through pore；
3) shell 5 for constituting the two-tube panel device of major diameter and lower perforated plate 6 are assembled into lower perforated plate component；
It 4) will be outside the horizontal tube bank being set in step 2 of shell 5；
5) it tries heat exchanger tube on again: carrying out any sampling observation, inspection along 0 °~360 ° borders of upper perforated plate using a certain number of heat exchanger tubes 4
Look into and confirm the concentricity of tube bank, heat exchanger tube 4 is accessible after pore, then tenses using reinforcement plate, puts cylinder of burn-oning later
The final circumferential weld 7 of shell side between section 1 and shell 5；
6) remaining all heat exchanger tubes 4 are fully completed poling operation by the way of dark poling；
7) the final circumferential weld 7 of shell side is welded.
In the step 1), the connection between upper perforated plate 1 and upper shell ring 2 uses docking structure.
As a preference, after the completion of trying plumber's sequence on, then wearing a certain number of heat exchanger tubes 4 in the step 2 and using
With rigid positioning；
It should be noted that after the completion of try plumber's sequence on, if the number of heat exchange tubes for trying in plumber's sequence can make it is whole
A component has sufficiently high rigidity, at this time there is no need to additionally wear heat exchanger tube again to carry out rigid positioning, only when trying pipe on
It after the completion of process, when the rigidity of entire component is insufficient, just needs to wear a certain number of heat exchanger tubes again and carries out rigid positioning, as needing
How many heat exchanger tubes are worn, need to carry out match selection according to the specific size specification of equipment, need to only meet makes component have foot
Enough rigidity.
As a preference, in the step 2, the number of heat exchange tubes for trying pipe on be heat exchanger tube total amount 1/10~
1/5。
In the step 3), the connection between lower perforated plate 6 and shell 5 uses docking structure.
As a preference, the number of heat exchange tubes for trying pipe on again is the 1/ of heat exchanger tube total amount in the step 5)
10~1/5.
Major diameter double tubesheet tube bank assembly technology of the invention guarantee by using the technical measures for trying pipe on twice it is upper,
Pore concentricity between lower perforated plate 1,6 and each support plate 8, i.e., verified in bright vertical tube by trying pipe on upper perforated plate 1 with
Concentricity between support plate 8 verifies upper perforated plate 1, lower perforated plate 6 again by pipe is tried on after by shell 5 and bundle fitting
And the concentricity between support plate 8, to guarantee when carrying out the operation of subsequent dark poling, all heat exchanger tubes 4 can be accessible
Success poling guarantees that the tube bank of major diameter double tubesheet can be assembled smoothly；Meanwhile in the assembling process entirely restrained, elder generation is only needed
Spot welding is carried out to the final circumferential weld 7 of an only shell side afterwards and welding equipment operates, is needed in existing bright poling technique to efficiently solve
The technical issues of multiple welding equipment shell and intermediate shell ring；In addition, the present invention uses the assembly technology of bright vertical tube, dark poling, no
Need using assembly support plate 8 tooling, so as to save the simple tooling that must be used in existing dark poling technique or specially
With tooling, the manufacturing cost of equipment is saved；For panel device two-tube for major diameter, support plate 8 is exterior in 5 cylinder of shell,
It can bring great convenience to the entire manufacturing, to improve and guarantee the accuracy of manufacture of the two-tube panel device of major diameter.
In conclusion major diameter double tubesheet tube bank assembly technology of the invention can not only guarantee the two-tube panel device of major diameter
The smooth assembly of tube bank, and it also has an assembly technology simple possible, assembly manipulation is convenient, the equipment assembling manufacturing period it is short and
The advantages such as manufacturing cost is low, are highly widely used to promote.
It should be understood that above-mentioned specific embodiment of the invention is used only for exemplary illustration or explains of the invention
Principle, but not to limit the present invention.Therefore, that is done without departing from the spirit and scope of the present invention is any
Modification, equivalent replacement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of major diameter double tubesheet restrains assembly technology, which comprises the following steps:
1) upper perforated plate (1) for constituting the two-tube panel device of major diameter and upper shell ring (2) are assembled into upper perforated plate component, then by upper tube
The bright vertical tube of board group part, bright vertical tube include dress pull rod (3), distance sink tube and dress support plate (8)；
2) it tries heat exchanger tube on: carrying out any sampling observation along (1) 0 °~360 ° borders of upper perforated plate using a certain number of heat exchanger tubes (4),
Review and validate the concentricity of tube bank, it is ensured that heat exchanger tube (4) accessible can pass through pore；
3) shell (5) for constituting the two-tube panel device of major diameter and lower perforated plate (6) are assembled into lower perforated plate component；
It 4) will be outside the horizontal tube bank being set in step 2 of shell (5)；
5) it tries heat exchanger tube on again: carrying out any pumping along (1) 0 °~360 ° borders of upper perforated plate using a certain number of heat exchanger tubes (4)
The concentricity of tube bank is reviewed and validate in inspection, and heat exchanger tube (4) is accessible after pore, then is tensed using reinforcement plate, Zhi Houdian
The final circumferential weld of shell side (7) burn-on between shell ring (2) and shell (5)；
6) remaining all heat exchanger tubes (4) are fully completed poling operation by the way of dark poling；
7) the final circumferential weld of shell side (7) are welded.
2. major diameter double tubesheet according to claim 1 restrains assembly technology, which is characterized in that in the step 1), on
Connection between tube sheet (1) and upper shell ring (2) uses docking structure.
3. major diameter double tubesheet according to claim 1 restrains assembly technology, which is characterized in that in the step 2, when
After the completion of trying plumber's sequence on, then a certain number of heat exchanger tubes (4) are worn to rigid positioning.
4. major diameter double tubesheet according to claim 1 restrains assembly technology, which is characterized in that in the step 2, use
In try on pipe number of heat exchange tubes be heat exchanger tube total amount 1/10~1/5.
5. major diameter double tubesheet according to claim 1 restrains assembly technology, which is characterized in that in the step 3), under
Connection between tube sheet (6) and shell (5) uses docking structure.
6. major diameter double tubesheet according to claim 1 restrains assembly technology, which is characterized in that in the step 5), use
In try on again pipe number of heat exchange tubes be heat exchanger tube total amount 1/10~1/5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267660.0A CN109623253A (en) | 2018-10-29 | 2018-10-29 | A kind of major diameter double tubesheet tube bank assembly technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811267660.0A CN109623253A (en) | 2018-10-29 | 2018-10-29 | A kind of major diameter double tubesheet tube bank assembly technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109623253A true CN109623253A (en) | 2019-04-16 |
Family
ID=66066751
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811267660.0A Pending CN109623253A (en) | 2018-10-29 | 2018-10-29 | A kind of major diameter double tubesheet tube bank assembly technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109623253A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380382A (en) * | 2020-03-23 | 2020-07-07 | 东方电气集团东方锅炉股份有限公司 | Tube bundle sleeving method of double-folding type coiled tube high-pressure heater |
| CN111521041A (en) * | 2020-04-16 | 2020-08-11 | 哈尔滨锅炉厂有限责任公司 | Sleeving method of tube plate and heat exchange tube |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102555A (en) * | 1985-04-10 | 1986-05-10 | 法玛道姆公司 | At the heat exchanger of outer cylindrical casing internal diameter to support arrangements heat-exchanging tube bundle in the heat-exchanging tube bundle barrel shell |
| CN104197770A (en) * | 2014-08-01 | 2014-12-10 | 张家港化工机械股份有限公司 | Installing and manufacturing process for heat exchange tubes and double tube plates in double-tube-plate heat exchanger |
| CN105014336A (en) * | 2015-06-24 | 2015-11-04 | 江苏盛信重工有限公司 | Novel manufacturing technique for double-tubesheet heat exchanger |
| CN105798520A (en) * | 2016-05-30 | 2016-07-27 | 哈电集团（秦皇岛）重型装备有限公司 | Method and auxiliary device for manufacturing heat exchanger with heat exchange pipe exposed |
| CN207180429U (en) * | 2017-08-17 | 2018-04-03 | 金迈思液压设备（天津）有限公司 | A kind of single process shell and tube cooler |
| CN108692594A (en) * | 2017-05-09 | 2018-10-23 | 山东大学 | It is a kind of setting intercommunicating pore can not condensing body annular and separation device heat exchanger |
-
2018
- 2018-10-29 CN CN201811267660.0A patent/CN109623253A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN85102555A (en) * | 1985-04-10 | 1986-05-10 | 法玛道姆公司 | At the heat exchanger of outer cylindrical casing internal diameter to support arrangements heat-exchanging tube bundle in the heat-exchanging tube bundle barrel shell |
| CN104197770A (en) * | 2014-08-01 | 2014-12-10 | 张家港化工机械股份有限公司 | Installing and manufacturing process for heat exchange tubes and double tube plates in double-tube-plate heat exchanger |
| CN105014336A (en) * | 2015-06-24 | 2015-11-04 | 江苏盛信重工有限公司 | Novel manufacturing technique for double-tubesheet heat exchanger |
| CN105798520A (en) * | 2016-05-30 | 2016-07-27 | 哈电集团（秦皇岛）重型装备有限公司 | Method and auxiliary device for manufacturing heat exchanger with heat exchange pipe exposed |
| CN108692594A (en) * | 2017-05-09 | 2018-10-23 | 山东大学 | It is a kind of setting intercommunicating pore can not condensing body annular and separation device heat exchanger |
| CN207180429U (en) * | 2017-08-17 | 2018-04-03 | 金迈思液压设备（天津）有限公司 | A kind of single process shell and tube cooler |
Non-Patent Citations (1)
| Title |
|---|
| 杨文峰等: "HF∈-134a 反应器制造", 《石油化工设备》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111380382A (en) * | 2020-03-23 | 2020-07-07 | 东方电气集团东方锅炉股份有限公司 | Tube bundle sleeving method of double-folding type coiled tube high-pressure heater |
| CN111521041A (en) * | 2020-04-16 | 2020-08-11 | 哈尔滨锅炉厂有限责任公司 | Sleeving method of tube plate and heat exchange tube |
| CN111521041B (en) * | 2020-04-16 | 2021-10-01 | 哈尔滨锅炉厂有限责任公司 | Sleeving method of tube plate and heat exchange tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109623253A (en) | A kind of major diameter double tubesheet tube bank assembly technology | |
| CN105057855B (en) | Erecting welding technological method for single-upper-ring type large segmented stand ring with sole plates | |
| CN106759374B (en) | Assembled underground engineering support arch node Automatic Link Establishment and construction method | |
| CN102518204B (en) | Buddha ceremonial canopy and manufacturing method thereof | |
| CN102380690A (en) | Method for controlling welding deformation of joint between inserted large inclined tube and barrel | |
| CN101797674A (en) | Positioning fixture for welding baffle plate | |
| CN103878468B (en) | The welding method of large-scale core detection container structure | |
| CN201728496U (en) | Positioning clamp used for welding clapboard | |
| CN106323583B (en) | A kind of wind-tunnel turning group is to method | |
| CN101157170B (en) | A anti-welding deformation technique | |
| CN203678917U (en) | Steel plate straightening device | |
| CN205869842U (en) | High temperature gas cooled piles shaft mouth built -in fitting and organizes auxiliary device for butt weld | |
| CN106271155B (en) | Outer gusset welding method in high temperature gas cooled reactor in lower heap core shell pedestal | |
| CN102601487B (en) | Method for welding water outlet nozzles on nuclear power hanging basket | |
| CN107470833A (en) | A kind of gas turbine exhaust diffuser welding tooling | |
| CN109014723A (en) | A kind of shielded coffin positioning pin entirety positioning installation apparatus | |
| CN207171355U (en) | A kind of gas turbine exhaust diffuser welding tooling | |
| CN206869369U (en) | A kind of inlet/outlet pipe welds auxiliary mould | |
| CN208450940U (en) | A kind of tool rack of regularization welding production sealing up screw | |
| CN105987026A (en) | Overhauling device and method for multistage centrifugal pump | |
| CN204183176U (en) | For the runing rest of pipeline welding | |
| CN208854031U (en) | A kind of shielded coffin positioning pin entirety positioning installation apparatus | |
| RU147316U1 (en) | MOBILE ASSEMBLY AND WELDING STAPLES FOR MANUFACTURING A HEAT EXCHANGER OF A MAST COOLING SYSTEM OF A MAST TRACT OF A SHIP ANTENNA | |
| CN210378091U (en) | A steam engine model for gold worker practice teaching | |
| CN209736538U (en) | Clamping fixture for processing double-layer main reinforcement cage |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190416 |
|
| RJ01 | Rejection of invention patent application after publication |