CN208431739U - A kind of steam generator - Google Patents
A kind of steam generator Download PDFInfo
- Publication number
- CN208431739U CN208431739U CN201820830287.4U CN201820830287U CN208431739U CN 208431739 U CN208431739 U CN 208431739U CN 201820830287 U CN201820830287 U CN 201820830287U CN 208431739 U CN208431739 U CN 208431739U
- Authority
- CN
- China
- Prior art keywords
- water
- flue
- heat exchanger
- exchanger tube
- steam
- 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.)
- Withdrawn - After Issue
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 143
- 239000012528 membrane Substances 0.000 claims abstract description 48
- 238000002485 combustion reaction Methods 0.000 claims abstract description 32
- 239000000779 smoke Substances 0.000 claims abstract description 8
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 21
- 239000003546 flue gas Substances 0.000 claims description 21
- 239000012736 aqueous medium Substances 0.000 claims description 19
- 229920006395 saturated elastomer Polymers 0.000 claims description 9
- 239000013589 supplement Substances 0.000 claims description 6
- 241000270295 Serpentes Species 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 2
- 239000005439 thermosphere Substances 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 230000003628 erosive effect Effects 0.000 description 6
- 230000001373 regressive effect Effects 0.000 description 6
- 238000001816 cooling Methods 0.000 description 4
- 238000007665 sagging Methods 0.000 description 4
- 239000000284 extract Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 229920001187 thermosetting polymer Polymers 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010025 steaming Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 206010022000 influenza Diseases 0.000 description 1
- 239000002609 medium Substances 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000003685 thermal hair damage Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The utility model discloses a kind of steam generators, including generator ontology and combustor, steam chest and combustion chamber are provided in generator ontology, combustion chamber surrounding is surrounded with water pipe membrane wall, intermediate header and water chamber header are communicated at the both ends of water pipe membrane wall, it is provided between water pipe membrane wall and generator ontology by the smoke baffle plate for being spaced apart formation the first flue and the second flue of water pipe membrane wall and generator ontology, the second backhaul heat exchanger tube is provided in the first flue, the upper end of second backhaul heat exchanger tube is connected by the first water pipe with circulating hot-water pump, the lower end of second backhaul heat exchanger tube is connected to by the second water pipe with intermediate header, circulating hot-water pump is connected with water chamber header；Third backhaul heat exchanger tube is provided in the second flue, the lower part of third backhaul heat exchanger tube is provided with lower end water inlet, and the upper end of third backhaul heat exchanger tube is connected by third water pipe with water chamber header.The utility model structure is simple, steam production rate is fast, energy utilization rate is high, exhaust gas temperature is low.
Description
Technical field
The utility model relates to a kind of steam generators.
Background technique
Steam generator is the equipment for converting water into high-temperature steam.Existing steam generator includes: Natural Circulation
Through-flow boiler and forced circulation boiler.The through-flow boiler of Natural Circulation is to form burner hearth with water pipe enclosing, and feed pump is in water
The water supply of pipe one end, water pass through bringing-up section, evaporator section in pipe, ultimately form steam, after steam enters in upper collecting chamber from pipe
It enters back into steam chest and discharges outward；Forced circulation boiler is to enclose burner hearth with single pipe with spiral pipe, by measuring water
Pump control water, makes water carry out heat absorption phase transformation in water pipe, controls water and flow velocity carrys out enhanced heat exchange.But natural circulation boiler
With forced circulation boiler all Shortcomings, wherein natural circulation boiler has the disadvantage in that bulk process structure is relative complex,
The purpose that external energy-saving appliance reaches energy conservation, higher cost need to be set；Forced circulation boiler has the disadvantage in that needs pass through setting
Complicated metering frequency conversion moisturizing controls evaporation capacity with large-scale external steam-water separator.Control device is complicated, at high cost.
Utility model content
That the purpose of the utility model is to provide a kind of structures is simple, steam production rate is fast, energy utilization rate is high, smoke evacuation temperature
Spend low steam generator.
To achieve the above object, the technical scheme adopted by the utility model is a kind of steam generator, comprising: occur
Device ontology and combustor are provided with steam chest and combustion chamber in generator ontology, and steam chest is located at the top of combustion chamber, on steam chest
It is provided with steam (vapor) outlet, the surrounding in combustion chamber is surrounded with the water pipe membrane wall as the first backhaul heat exchanger tube, the combustion of combustor
It burns mouth to extend into combustion chamber, is provided with and communicated with intermediate header in the upper end of water pipe membrane wall, setting is connected on intermediate header
There is steam pipe membrane wall, steam pipe membrane wall is connected with steam chest lower part, and the lower end of water pipe membrane wall is provided with and communicated with water chamber collection
Case, is provided with two pieces of smoke baffle plates in the cavity between water pipe membrane wall and generator ontology, and two smoke baffle plates are by water pipe membrane type
Cavity between wall and generator cabinet is separated to form the first flue and the second flue, in the water pipe membrane type being located in the first flue
The lower part of wall is provided with the first outlet flue, is provided with the second backhaul heat exchanger tube in the first flue, the second backhaul heat exchanger tube it is upper
End water inlet is connected by the first water pipe with the water outlet of water circulating pump, and the lower end venthole of the second backhaul heat exchanger tube passes through second
Water pipe is connected with the circulation interface of intermediate header, and the water inlet of water circulating pump is connected with water chamber header；It is being located at the second flue
In the lower part of generator ontology be provided with outlet flue, third backhaul heat exchanger tube is provided in the second flue, third backhaul is changed
The lower part of heat pipe is provided with lower end water inlet, and the upper end water outlet of third backhaul heat exchanger tube passes through third water pipe and water chamber header
Water supplement port is connected；Combustion flame burns in a combustion chamber when operation, and the flue gas of formation enters the first flue from the first outlet flue,
Then it is flowed up in the first flue and carries out countercurrent heat exchange with the saturated water in the second backhaul heat exchanger tube, after heat exchange
Flue gas flow up in the interstitial channels between intermediate header and steam chest tube sheet, and pass through the interstitial channels and enter the
In two flues, then flows downward in the second flue and carry out second of refluent heat with the aqueous medium in third backhaul heat exchanger tube
Exchange, the flue gas after exchanging heat for the second time are discharged from the second outlet flue.
Further, a kind of steam generator above-mentioned, wherein the outer wall of generator ontology is provided with thermal insulation layer.
Further, a kind of steam generator above-mentioned, wherein the second backhaul heat exchanger tube and third backhaul heat exchanger tube
It is snake bend shape, is provided with helical fin on the second backhaul heat exchanger tube and third backhaul heat exchanger tube.
Further, a kind of steam generator above-mentioned, wherein be provided in the bottom of water chamber header with valvular row
Dirt pipe.
Further, a kind of steam generator above-mentioned, wherein be connected with the first water pipe and water chamber header circulation interface
Water circulating pump is high-temperature-hot-water circulating pump.
Further, a kind of steam generator above-mentioned, wherein combustor is located at the top of generator ontology, combustor
Port pass through steam chest after with combustion chamber.
Further, a kind of steam generator above-mentioned, wherein be provided with refractory heat-insulating on the inside of steam pipe membrane wall
Layer.
Further, a kind of steam generator above-mentioned, wherein the intermediate header is ring structure, and combustion chamber is by steaming
Steam pipe membrane wall, intermediate header, water pipe membrane wall composition.
Further, a kind of steam generator above-mentioned, wherein the first flue and the symmetrical setting of the second flue.
Further, a kind of steam generator above-mentioned, wherein circulating outlet and water supplement port difference in water chamber header
Positioned at the left and right sides of water chamber header.
The utility model has the advantages that: (1) while aqueous medium in water pipe membrane wall through heat exchange form steam,
The saturated water that circulating hot-water pump can also extract in water chamber header enter in the second backhaul heat exchanger tube and be discharged in combustion chamber
High-temperature flue gas carries out regressive erosion heat exchange, makes the saturated water in the second backhaul heat exchanger tube also by thermosetting steam, thus mentions
The high generation speed and energy utilization rate of steam；It (2) can be with waste heat with the flue gas after the second backhaul heat exchange tube heat exchange
Aqueous medium in third backhaul heat exchanger tube carries out regressive erosion heat exchange, and the aqueous medium that small pump can thus fed is heated
After enter back into water chamber header and water pipe membrane wall, accelerate the speed that aqueous medium in water pipe membrane wall forms steam, into
One step improves the generation speed of steam and the utilization rate of the energy；(3) flue gas is inverse with the aqueous medium in third backhaul heat exchanger tube
To discharge can be directed out after washing away heat exchange cooling, without in addition setting cooling device, device structure is simplified.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of steam generator described in the utility model.
Fig. 2 is the A-A schematic cross-sectional view of generator ontology in Fig. 1.
Fig. 3 is B-B schematic cross-sectional view in Fig. 2.
Specific embodiment
With reference to the accompanying drawing and preferred embodiment is described further technical solution described in the utility model.
As shown in Figure 1, Figure 2, Figure 3 shows, a kind of steam generator described in the utility model, comprising: generator ontology 1 and combustion
The top of generator ontology 1 is arranged in burning machine 2, combustor 2, and the outer wall of generator ontology 1 is provided with thermal insulation layer 11, is occurring
Steam chest 12 and combustion chamber 13 are provided in device ontology 1, steam chest 12 is located at the top of combustion chamber 13, steam chest 12 and combustion chamber 13 it
Between be provided with the sagging plate 14 for separating the two, steam (vapor) outlet 15 is provided on steam chest 12, combustion chamber 13 all around
It is wound with the water pipe membrane wall 3 as the first backhaul heat exchanger tube, is provided with and communicated in annular shape in the upper end of water pipe membrane wall 3
Between header 4, steam pipe membrane wall 41 is provided with and communicated on intermediate header 4, after steam pipe membrane wall 41 passes through sagging plate 14
So that intermediate header 4 is connected with steam chest 12, refractory insulating layer 42 is provided on the inner wall of steam pipe membrane wall 41, to prevent from steaming
Steam pipe membrane wall 41 crosses cause thermal damage；The lower end of water pipe membrane wall 3 is provided with and communicated with water chamber header 5, sets in the bottom of water chamber header 5
It being equipped with valvular sewage pipe 51, steam pipe membrane wall 41, intermediate header 4 and water pipe membrane wall 3 surround composition combustion chamber 13,
The port of combustor 2 is connected to after passing through steam chest 12 with combustion chamber 13, the sky between water pipe membrane wall 3 and generator ontology 1
Two pieces of smoke baffle plates 6 are provided in chamber, the cavity between water pipe membrane wall 3 and generator ontology 1 is separated to form by two pieces of smoke baffle plates 6
Symmetrical first flue 7 and the second flue 8 are provided with first in the lower part for the water pipe membrane wall 3 being located in the first flue 7
Outlet flue 31 is provided with the second backhaul heat exchanger tube 71 of snake bend shape, in the second backhaul heat exchanger tube 71 in the first flue 7
On be provided with the helical fin that can increase heat exchange efficiency, the upper end water inlet of the second backhaul heat exchanger tube 71 passes through the first water pipe 91
It is connected with the water outlet of high-temperature-hot-water circulating pump 92, the lower end venthole of the second backhaul heat exchanger tube 71 is by the second water pipe 93 in
Between the circulation interface of header 4 be connected, the water inlet of high-temperature-hot-water circulating pump 92 and the circulating outlet of 5 right-hand end of water chamber header
It is connected；The lower part for the generator ontology 1 being located in the second flue 8 is provided with the second outlet flue 16, is set in the second flue 8
It is equipped with the third backhaul heat exchanger tube 81 of snake bend shape, heat exchange efficiency can be increased by being provided on third backhaul heat exchanger tube 81
Helical fin, the lower end water inlet of third backhaul heat exchanger tube 81 is connected with small pump 10, the upper end of third backhaul heat exchanger tube 81
Water outlet is connected by third water pipe 94 with the water supplement port of 5 left-hand end of water chamber header, the circulating outlet in water chamber header 5 and
Water supplement port is located at the left and right sides of water chamber header 5.The flue gas formed in combustion chamber 13 enters from the first outlet flue 31
Then one flue 7 flows up in the first flue 7 and carries out heat exchange, warp with the saturated water in the second backhaul heat exchanger tube 71
Flue gas after heat exchange flows up in the gap between intermediate header 4 and sagging plate 14, and passes through the gap and enter
Into the second flue 8, then flows downward in the second flue 8 and carry out hot friendship with the aqueous medium in third backhaul heat exchanger tube 81
It changes, the flue gas after exchanging heat is discharged from the second outlet flue 16.
The working principle of the utility model is as follows: small pump 10 feeds aqueous medium and enters under third backhaul heat exchanger tube 81
It holds in water inlet, and so that aqueous medium is transported to third from the bottom up in third backhaul heat exchanger tube 81 under the action of small pump 10
The upper end water outlet of backhaul heat exchanger tube 81, and entered in water chamber header 5 and water pipe membrane wall 3 by third water pipe 94, high temperature
Hot water circulating pump 92 extracts aqueous medium from water chamber header 5, and enters the second backhaul heat exchanger tube 71 by the first water pipe 91
Upper end water inlet, the aqueous medium in the second backhaul heat exchanger tube 71, which is flow to from top to bottom under the second backhaul heat exchanger tube 71, brings out vapour
Mouthful.When aqueous medium is when carrying out above-mentioned flow process, combustor 2 sprays into fuel into combustion chamber 13 and burns, combustion chamber 13
High temperature and high-temperature flue gas are generated, the high temperature that combustion chamber 13 generates will be as the water in the water pipe membrane wall 3 of the first backhaul heat exchanger tube
Media for heat exchange forms steam, and steam flows upward is into intermediate header 4, then passes through steam pipe membrane wall 41 from intermediate header 4
It enters in steam chest 12, last steam discharges outward after passing through steam (vapor) outlet 15 from steam chest 12；The high temperature cigarette that combustion chamber 13 generates
Gas enters in the first flue 7 from the first outlet flue 31, and the high-temperature flue gas in the first flue 7 flows and the second backhaul from bottom to top
The saturated water flowed from top to bottom in heat exchanger tube 71 carries out regressive erosion heat exchange, and the saturated water in the second backhaul heat exchanger tube 71 changes
Thermosetting steam, steam enter intermediate header 4 after the lower end venthole of the second backhaul heat exchanger tube 71 and the second water pipe 93
In, then pass through discharge outward after steam pipe membrane wall 41 enters in steam chest 12.Flue gas in first flue 7 passes through and second time
It goes back band after saturation hydrothermal exchange in journey heat exchanger tube 71 to have surplus heat, the flue gas that band has surplus heat enters intermediate collection from the first flue 7
It in gap between case 4 and sagging plate 14, then flows down in the second flue 8 from the gap, then in the second flue 8
Flow downward, the flue gas that band has surplus heat in the second flue 8 from top to bottom flowing with third backhaul heat exchanger tube 81 in from the bottom up
Flowing water medium carries out regressive erosion heat exchange, and the aqueous medium of heat exchange heating enters water chamber header by third water pipe 94
In 5, the flue gas further to cool down after heat exchange is finally discharged from the second outlet flue 16 on generator cabinet 1.
The utility model has the advantages that: (1) while aqueous medium in water pipe membrane wall through heat exchange form steam,
The saturated water that circulating hot-water pump can also extract in water chamber header enter in the second backhaul heat exchanger tube and be discharged in combustion chamber
High-temperature flue gas carries out regressive erosion heat exchange, makes the saturated water in the second backhaul heat exchanger tube also by thermosetting steam, thus mentions
The high generation speed and energy utilization rate of steam；It (2) can be with waste heat with the flue gas after the second backhaul heat exchange tube heat exchange
Aqueous medium in third backhaul heat exchanger tube carries out regressive erosion heat exchange, and the aqueous medium that small pump can thus fed is heated
After enter back into water chamber header and water pipe membrane wall, accelerate the speed that aqueous medium in water pipe membrane wall forms steam, into
One step improves the generation speed of steam and the utilization rate of the energy；(3) flue gas is inverse with the aqueous medium in third backhaul heat exchanger tube
To discharge can be directed out after washing away heat exchange cooling, without in addition setting cooling device, device structure is simplified.
Claims (10)
1. a kind of steam generator, comprising: generator ontology and combustor are provided with steam chest and burning in generator ontology
Room, steam chest are located at the top of combustion chamber, steam (vapor) outlet are provided on steam chest, and the surrounding in combustion chamber is surrounded with as first time
The water pipe membrane wall of journey heat exchanger tube, the port of combustor are extend into combustion chamber, are connected to setting in the upper end of water pipe membrane wall
There is intermediate header, steam pipe membrane wall is provided with and communicated on intermediate header, steam pipe membrane wall is connected with steam chest lower part, water
The lower end of pipe membrane wall is provided with and communicated with water chamber header, it is characterised in that: the sky between water pipe membrane wall and generator ontology
Two pieces of smoke baffle plates are provided in chamber, the cavity between water pipe membrane wall and generator cabinet is separated to form first by two smoke baffle plates
Flue and the second flue are provided with the first outlet flue in the lower part for the water pipe membrane wall being located in the first flue, in the first flue
In be provided with the second backhaul heat exchanger tube, the upper end water inlet of the second backhaul heat exchanger tube passes through the water outlet of the first water pipe and water circulating pump
Mouth is connected, and the lower end venthole of the second backhaul heat exchanger tube is connected by the second water pipe with the circulation interface of intermediate header, circulation
The water inlet of water pump is connected with water chamber header；The lower part for the generator ontology being located in the second flue is provided with outlet flue,
Third backhaul heat exchanger tube is provided in second flue, the lower part of third backhaul heat exchanger tube is provided with lower end water inlet, third backhaul
The upper end water outlet of heat exchanger tube is connected by third water pipe with the water supplement port of water chamber header；Combustion flame is in a combustion chamber when operation
Burning, the flue gas of formation enters the first flue from the first outlet flue, then flow up in the first flue and with second time
Saturated water in journey heat exchanger tube carries out countercurrent heat exchange, and the flue gas after heat exchange flows up to intermediate header and steam chest tube sheet
Between interstitial channels in, and pass through the interstitial channels and enter in the second flue, then flow downward in the second flue
And second of countercurrent heat exchange is carried out with the aqueous medium in third backhaul heat exchanger tube, the flue gas after exchanging heat for the second time goes out from second
Mouth discharges.
2. a kind of steam generator according to claim 1, it is characterised in that: the outer wall of generator ontology be provided with every
Thermosphere.
3. a kind of steam generator according to claim 1 or 2, it is characterised in that: the second backhaul heat exchanger tube and
Three backhaul heat exchanger tubes are snake bend shape, are provided with spiral wing on the second backhaul heat exchanger tube and third backhaul heat exchanger tube
Piece.
4. a kind of steam generator according to claim 1 or 2, it is characterised in that: be provided in the bottom of water chamber header
With valvular sewage pipe.
5. a kind of steam generator according to claim 1 or 2, it is characterised in that: followed with the first water pipe and water chamber header
The connected water circulating pump of ring interface is high-temperature-hot-water circulating pump.
6. a kind of steam generator according to claim 1 or 2, it is characterised in that: combustor is located at generator ontology
Top, the port of combustor pass through after steam chest with combustion chamber.
7. a kind of steam generator according to claim 6, it is characterised in that: be provided on the inside of steam pipe membrane wall
Refractory insulating layer.
8. a kind of steam generator according to claim 6, it is characterised in that: the intermediate header is ring structure, combustion
Room is burnt to be made of steam pipe membrane wall, intermediate header, water pipe membrane wall.
9. a kind of steam generator according to claim 1 or 2, it is characterised in that: the first flue and the second flue are in a left side
The right side is symmetrical arranged.
10. a kind of steam generator according to claim 1 or 2, it is characterised in that: the circulating outlet in water chamber header
The left and right sides of water chamber header is located at water supplement port.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820830287.4U CN208431739U (en) | 2018-05-31 | 2018-05-31 | A kind of steam generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820830287.4U CN208431739U (en) | 2018-05-31 | 2018-05-31 | A kind of steam generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208431739U true CN208431739U (en) | 2019-01-25 |
Family
ID=65101108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820830287.4U Withdrawn - After Issue CN208431739U (en) | 2018-05-31 | 2018-05-31 | A kind of steam generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208431739U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591986A (en) * | 2018-05-31 | 2018-09-28 | 张家港威孚热能股份有限公司 | A kind of steam generator |
| CN113557389A (en) * | 2019-03-15 | 2021-10-26 | 猪野贵行 | Multi-pipe type through-flow boiler |
-
2018
- 2018-05-31 CN CN201820830287.4U patent/CN208431739U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108591986A (en) * | 2018-05-31 | 2018-09-28 | 张家港威孚热能股份有限公司 | A kind of steam generator |
| CN108591986B (en) * | 2018-05-31 | 2023-10-24 | 张家港威孚热能股份有限公司 | Steam generator |
| CN113557389A (en) * | 2019-03-15 | 2021-10-26 | 猪野贵行 | Multi-pipe type through-flow boiler |
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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: 20190125 Effective date of abandoning: 20231024 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20190125 Effective date of abandoning: 20231024 |