CN105650659B - Whirlwind wet dedusting formula energy-saving coal fired boiler - Google Patents
Whirlwind wet dedusting formula energy-saving coal fired boiler Download PDFInfo
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- CN105650659B CN105650659B CN201610095356.7A CN201610095356A CN105650659B CN 105650659 B CN105650659 B CN 105650659B CN 201610095356 A CN201610095356 A CN 201610095356A CN 105650659 B CN105650659 B CN 105650659B
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- clip
- boiler
- fan shaft
- water
- fan
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/006—Layout of treatment plant
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/02—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged in the boiler furnace, fire tubes, or flue ways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses a kind of whirlwind wet dedusting formula energy-saving coal fired boiler, the high-temperature tail gas Guan Jingshui preheating tubular heat exchanger tube sides of boiler body connect air-introduced machine with cyclone dust collectors；Water below cyclone dust collectors in cesspool is through the shower tray in spray pump connection cyclone dust collectors；Boiler water supply is given in high-order soft water pond after water preheating tubular heat exchanger shell side preheating；The belt pulley of the air-introduced machine is all made of the Screw assembly of auto lock with fan shaft and draught fan impeller with fan shaft；Copper modeling reflexed composite pad is compressed rear fan axis and forms screw thread rigid connection by draught fan impeller；Clip part makes belt pulley also constitute rigid connection with the fan shaft other end.The present invention not only realizes recuperation of heat and the purified treatment of boiler exhaust gas, more importantly significantly take on a new look the dismounting technology of boiler induced-draft fan, it can effectively solve the problems, such as that boiler induced-draft fan Screw assembly continuous auto lock under load effect is not easy to remove, the convenient dismounting being particularly suitable for after large-sized boiler wind turbine screw-threaded coupling.
Description
Technical field
The present invention relates to a kind of air-introduced machines convenient for the whirlwind wet dedusting formula energy-saving coal fired boiler of dismantling and maintenance.
Background technology
Boiler is to be widely used general thermodynamic apparatus, to boiler carry out air-supply and dedusting all be unable to do without wind turbine it is long when
Between run, therefore, wind turbine is the key equipment of boiler, and the tonnage of boiler is bigger, and used wind turbine is also bigger, common wind turbine
Structure is typically all that fan shaft one end is draught fan impeller, and the other end is motor power input terminal, is often belt pulley.Due to boiler
Interior wind turbine is typically all long-time continuous operation, so bearing is fragile, replace bearing generally need to first dismantle draught fan impeller with
The belt pulley of the other end, but the existing boiler air arbor and assembly of draught fan impeller, belt pulley belongs to typical axis, hole interference is matched
It closes, and carrying transmission is carried out by key.It is higher to be interference fitted usual requirement on machining accuracy, and turns to realize in conjunction with key connection
Square bearing function, assembly generally all need to load prodigious extruding force, if without professional equipment and tool, dismounting is not all very square
Just.
Threaded connection is simple with processing, assembly is convenient, while also with unidirectionally carrying torque functions, therefore, in boiler
If fan shaft is threadedly coupled and realizes transmission with can be used in the connection in hole, it is all more convenient to be allowed to assembly or disassembly, then has
Higher practical value and market application prospect.In actual axis and hole cooperation motion thread assembly, held greatly in order to realize
Functional requirement is carried, the scantling of thread spindle similar nut member with what is matched is all larger, is screwed in assembly often all also
It is very easily convenient, and the automatic continuous locking of bearing capacity can be realized in use, thus it is very reliable, but in dismounting,
Assembly is often very tight, and dismounting is very difficult, if simple easy removal can be realized under these conditions, it appears particularly heavy
It wants.
On the other hand, good recuperation of heat and dedusting are carried out to boiler, is of great significance for energy-saving and emission-reduction, meets me
The fundamental state policy of state's present construction stage resource-conserving and environmentally friendly amphitypy society.
Invention content
The technical problem to be solved in the present invention is to overcome the shortcomings of the prior art and provide a kind of rotations simple and practical in structure
Humidifying method cleaning type energy-saving coal fired boiler.
In order to overcome the deficiencies of the prior art, the present invention takes following technical scheme：
A kind of whirlwind wet dedusting formula energy-saving coal fired boiler, including boiler body, it is characterised in that：The high temperature of boiler body
Offgas duct connects air-introduced machine through water preheating tubular heat exchanger tube side with cyclone dust collectors；Cesspool is connected below cyclone dust collectors,
Water in cesspool is through the shower tray in spray pump connection cyclone dust collectors；High-order soft water pond preheats tubular heat exchanger shell side through water
After preheating, by high pressure pump system to boiler water supply；The air-introduced machine includes draught fan impeller, bearing, fan shaft and belt pulley, skin
Belt wheel is all made of Screw assembly with fan shaft and draught fan impeller with fan shaft, and thread rotary orientation is with work and carrying auto lock
Direction；Draught fan impeller is similar to nut by being threadedly coupled with fan shaft and impeller plain washer, copper being moulded reflexed composite pad compression, wind
Machine impeller forms screw thread rigid connection with fan shaft one end；Clip part is inserted in the fan shaft other end, then by belt pulley plain washer
It is inserted in fan shaft, the belt pulley of similar nut, then rationally all locking is then threaded into, makes the belt of clip part and similar nut
Wheel also constitutes rigid connection with the fan shaft other end.
Copper modeling reflexed composite pad be punch process at copper packing, it is outer to be with fin then compound easily in copper packing both sides
Molten plastic washer.
The clip part is made of clip, clip ear, clip pad and bolt, and clip section is wedge shape, by two semicircles
For ring clip body composition to opening structure, it is planar structure that clip, which pads both ends, and convenient for coordinating with shaft shoulder plane, clip is passed through using bolt
Hole on clip ear is assemblied on clip pad and is integrally formed.
The air outlet of the air-introduced machine connects chimney.
High-temperature tail gas is extracted out by pipeline by air-introduced machine when boiler works, and from top to bottom passes through water preheating tubulation heat exchange first
The tube side of device is overflowed with shell side bottom pipe into, shell side upper pipe, and the softened water from high-order soft water pond carries out adverse current and changes
Heat, tubular heat exchanger lower part are discharged the tail gas after recuperation of heat heat exchange again by Wet cyclonic dust collector purified treatment, then pass through
Air-introduced machine is pumped to be emptied through chimney, is conveyed to boiler water supply by high pressure pump system by the softened water of pre-heating temperature elevation, is realized tail
Recuperation of heat and energy-saving and emission-reduction；Enter before cyclone dust collectors after tail gas heat exchange, setting is sprayed by the wet method that spray pump, shower tray are constituted
Water-bound carries out air water eddy flow together with air-flow in cyclone dust collectors, and Wet cyclone dedusting is particularly easy to absorption and captures dust,
Catch is discharged into settling tank and is kept in settling tank by lower part water sealing (sealing water) pipe, and medicament, which is added, can carry out pernicious gas harmless treatment.
When boiler induced-draft fan need to be dismantled and be overhauled, using copper modeling reflexed composite pad, the clip part of innovative design, pass through
Operation readiness, can simply eliminate similar nut member to the pressure of screw shaft shoulder end face, and at this moment nut and screw part are in unloading
Carry vacant state, dismantling becomes simple and convenient as Screw assembly, for solve Screw assembly under load effect constantly from
Dynamic locking, technical barrier not easy to remove, in large-sized boiler axes of blower component screw-threaded coupling field, such function seems
It is particularly important.
When draught fan impeller need dismantle but it is very difficult when, using oxy arc to copper modeling reflexed Composition spacer among
Copper packing carries out oxy arc heat treatment, and since the conductivity of heat of copper is fabulous, and the fusing point of plastics is relatively low, and plastics are heated after heating
Solution, the compression tensile force of draught fan impeller and shaft shoulder step completely eliminate, and so that draught fan impeller is in complete vacant state, especially easily
In dismounting.
When the pulley of similar nut need to dismantle but it is very difficult when, bolt is removed with spanner, because of two
Semicircular ring clip body be fast wedge shape to opening structure and clip body section, the tool that one end can be used flat connect from two clip ears
Engagement is held together place and is easily pried open, and clip easy removal is got off, clip pad returns to relaxed state, makes pulley and shaft shoulder end face
Locking after tensile force completely eliminate, so that the pulley of similar nut is in complete vacant state, be especially susceptible to tear open
It unloads.
The present invention not only realizes recuperation of heat and the purified treatment of boiler exhaust gas, it is often more important that significantly taken on a new look boiler
It is not easy to remove effectively to solve boiler induced-draft fan Screw assembly continuous auto lock under load effect for the dismounting technology of air-introduced machine
The problem of, the convenient dismounting being particularly suitable for after large-sized boiler wind turbine screw-threaded coupling, effect is especially pronounced, compared with prior art,
Beneficial effects of the present invention also reside in：
1, do not change the feature of Screw assembly, copper modeling reflexed composite pad, clip pad and clip need to only be added, it is at low cost also special
It is not easily achieved；2, copper modeling reflexed composite pad, clip pad can play good Stress decomposition, the carrying energy of effective enhancing structure
Power；3, the Assembly And Disassembly for cleverly using very much copper modeling reflexed composite pad hot melt design and clip, realizes of axial accessory
Tightly with relaxation function, the tensile force of similar nut locking is effectively fast eliminated, realizes that especially tight similar nut member screw thread fills
The component rapid and convenient dismounting matched；4, the wedge-shaped assembling structure of clip pad and clip uses convenient for quick assembly and disassembly repeatedly.
Description of the drawings
Fig. 1 is the planar structure schematic diagram of the present invention.
Fig. 2 is the planar structure schematic diagram of air-introduced machine.
Fig. 3 is the structural schematic diagram of copper modeling reflexed composite pad.
Fig. 4 is the assembling structure schematic diagram of clip part.
Fig. 5 is the fractionation structural representation of clip part.
Fig. 6 is the structural schematic diagram of clip pad.
Each label indicates in figure：
A, boiler induced-draft fan；1, boiler body；2, water preheats tubular heat exchanger；3, cyclone dust collectors；4, spray pump；5, it sprays
Tray；6, chimney；8, high-order soft water pond；9, Multi-stage high-pressure water pump；31, draught fan impeller；32, copper moulds reflexed composite pad；33, axis
It holds；34, fan shaft；35, belt pulley；36, clip part；38, meltable plastic washer；39, copper packing and fin；41, clip；42、
Clip ear；43, clip pad；45, bolt.
Specific implementation mode
In conjunction with attached drawing, the present invention is further elaborated with.
As shown in Figure 1, Figure 2, the formula energy-saving coal fired boiler of whirlwind wet dedusting shown in Fig. 3, Fig. 4, Fig. 5 and Fig. 6, including boiler body
1, high-temperature tail gas Guan Jingshui preheating 2 tube sides of tubular heat exchanger and cyclone dust collectors 3 of boiler body connect air-introduced machine A；Whirlwind removes
3 lower section of dirt device connects cesspool 7, and the water in cesspool 7 connects the shower tray 5 in cyclone dust collectors 3 through spray pump 4；It is high-order soft
Pond 8 is after water preheating tubular heat exchanger tube side preheating, by high pressure pump system to boiler water supply；The air-introduced machine A includes wind
Machine impeller 31, bearing 33, fan shaft 34 and belt pulley 35, belt pulley 35 and fan shaft 34 and draught fan impeller 31 and fan shaft 34 are equal
Using Screw assembly, thread rotary orientation is the direction with work and carrying auto lock；Draught fan impeller 31 similar to nut by with wind
Arbor 34 is threadedly coupled and compresses impeller plain washer, copper modeling reflexed composite pad 32, draught fan impeller 31 and 34 one end shape of fan shaft
It is rigidly connected at screw thread；Clip part 36 is inserted in 34 other end of fan shaft, then belt pulley plain washer is inserted in fan shaft, then revolves
Enter the belt pulley 35 of similar nut, then rationally all locking, makes the belt pulley 35 and fan shaft of clip part 36 and similar nut
34 other ends also constitute rigid connection.
Copper modeling reflexed composite pad 32 for punch process at copper packing, it is outer to be with fin 39 then multiple in copper packing both sides
Close meltable plastic washer 38.
The clip part 36 is made of clip 41, clip ear 42, clip pad 43 and bolt 45, and clip section is wedge shape,
It being made of to opening structure two semicircular ring clip bodies, it is planar structure that clip, which pads 43 both ends, convenient for coordinating with shaft shoulder plane, clip
The hole on clip ear 42 is passed through using bolt 45, is assemblied on clip pad 43 and is integrally formed.
The air outlet of the air-introduced machine A connects chimney 6.
High-temperature tail gas is extracted out by pipeline by air-introduced machine when boiler works, and from top to bottom passes through water preheating tubulation heat exchange first
The tube side of device 2 is overflowed with shell side bottom pipe into, shell side upper pipe, and the softened water from high-order soft water pond 8 carries out adverse current and changes
Heat, 2 lower part of tubular heat exchanger are discharged the tail gas after recuperation of heat heat exchange again by 3 purified treatment of Wet cyclonic dust collector, then lead to
It crosses air-introduced machine A to pump through the emptying of chimney 6, boiler water supply is conveyed to by high pressure pump system by the softened water of pre-heating temperature elevation, it is real
Existing tail recuperation of heat and energy-saving and emission-reduction；Enter before cyclone dust collectors 3 after tail gas heat exchange, setting is made of spray pump 4, shower tray 5
Wet method water spraying structure, air water eddy flow is carried out in the cyclone dust collectors 3 together with air-flow, Wet cyclone dedusting is particularly easy to adsorb
Capture dust, catch is discharged into settling tank and kept in settling tank by lower part water sealing (sealing water) pipe, be added medicament can carry out pernicious gas without
Evilization processing.
When boiler induced-draft fan A need to be dismantled and be overhauled, copper modeling reflexed composite pad 32, the clip part of innovative design are utilized
36, by operation readiness, it can simply eliminate similar nut member to the pressure of screw shaft shoulder end face, at this moment nut and screw part
In unloading vacant state, dismantling becomes simple and convenient as Screw assembly, for solving Screw assembly under load effect
Continuous auto lock, technical barrier not easy to remove, in large-sized boiler axes of blower component screw-threaded coupling field, such work(
It can be particularly important.
When air-introduced machine A impellers need to dismantle but it is very difficult when, using oxy arc in copper modeling reflexed composite pad 32
Between copper packing carry out oxy arc heat treatment, since the conductivity of heat of copper is fabulous, and the fusing point of plastics is relatively low, and plastics are heated after heating
It melts, the compression tensile force of draught fan impeller and shaft shoulder step completely eliminates, and so that draught fan impeller is in complete vacant state, especially
It is readily disassembled.
When 35 component of belt pulley of similar nut need to dismantle but it is very difficult when, bolt 45 is removed with spanner, because
Two semicircular ring clip bodies be fast wedge shape to opening structure and clip body section, the tool that one end can be used flat is from two clips
Ear 42 connects the place of closing up and easily pries open, and clip easy removal is got off, clip pad 43 returns to relaxed state, makes 35 component of belt pulley
The tensile force after locking with shaft shoulder end face completely eliminates, and 35 component of belt pulley of similar nut is made to be in complete hanging shape
State is especially susceptible to dismantle.
Above-mentioned only presently preferred embodiments of the present invention, is not intended to limit the present invention in any form.It is any to be familiar with sheet
The technical staff in field, without deviating from the scope of the technical scheme of the present invention, all using the technology contents of the disclosure above
Many possible changes and modifications are made to technical solution of the present invention, or are revised as the equivalent embodiment of equivalent variations.Therefore, all
It is the content without departing from technical solution of the present invention, technical spirit is made to the above embodiment according to the present invention any simply repaiies
Change, equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (2)
1. a kind of whirlwind wet dedusting formula energy-saving coal fired boiler, including boiler body, it is characterised in that：The high temperature tail of boiler body
Tracheae connects air-introduced machine through water preheating tubular heat exchanger tube side with cyclone dust collectors；Cesspool is connected below cyclone dust collectors, it is dirty
Water in pond is through the shower tray in spray pump connection cyclone dust collectors；The water in high-order soft water pond preheats tubular heat exchanger shell through water
After journey preheating, by high pressure pump system to boiler water supply；The air-introduced machine includes draught fan impeller, bearing, fan shaft and belt pulley,
Belt pulley is all made of Screw assembly with fan shaft and draught fan impeller with fan shaft, and thread rotary orientation is with work and carrying auto lock
Direction；Draught fan impeller similar to nut by be threadedly coupled with fan shaft and by impeller plain washer, copper mould reflexed composite pad compress,
Draught fan impeller forms screw thread rigid connection with fan shaft one end；Clip part is inserted in the fan shaft other end, then by belt pulley plain cushion
Snare enters fan shaft, is then threaded into the belt pulley of similar nut, then rationally all locking, makes the skin of clip part and similar nut
Belt wheel also constitutes rigid connection with the fan shaft other end；Copper modeling reflexed composite pad be punch process at copper packing, periphery
There is fin, then in the compound meltable plastic washer in copper packing both sides；The clip part is by clip, clip ear, clip pad and bolt structure
Be wedge shape at, clip section, be made of to opening structure two semicircular ring clip bodies, it is planar structure that clip, which pads both ends, be convenient for
Shaft shoulder plane coordinates, and clip passes through the hole on clip ear using bolt, is assemblied on clip pad and is integrally formed.
2. whirlwind wet dedusting formula energy-saving coal fired boiler according to claim 1, it is characterised in that：The air-introduced machine goes out
Air port connects chimney.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095356.7A CN105650659B (en) | 2016-02-22 | 2016-02-22 | Whirlwind wet dedusting formula energy-saving coal fired boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610095356.7A CN105650659B (en) | 2016-02-22 | 2016-02-22 | Whirlwind wet dedusting formula energy-saving coal fired boiler |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105650659A CN105650659A (en) | 2016-06-08 |
| CN105650659B true CN105650659B (en) | 2018-07-13 |
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ID=56489655
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610095356.7A Active CN105650659B (en) | 2016-02-22 | 2016-02-22 | Whirlwind wet dedusting formula energy-saving coal fired boiler |
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| CN2425216Y (en) * | 2000-05-31 | 2001-03-28 | 范基兴 | Sand pump |
| CN1699691A (en) * | 2005-06-23 | 2005-11-23 | 沙同庆 | Anti-theft rail clip on railroad |
| CN202682638U (en) * | 2012-03-13 | 2013-01-23 | 承弘工业股份有限公司 | Fire-fighting sprinkler head structure |
| CN203784067U (en) * | 2014-03-20 | 2014-08-20 | 邵传江 | Reusable anti-theft bolt |
| CN204458475U (en) * | 2014-12-22 | 2015-07-08 | 芜湖美智空调设备有限公司 | Linkage structure and air conditioner |
| CN105066157A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Tail gas recovery dust removal type coal-fired boiler |
| CN105135101A (en) * | 2015-09-17 | 2015-12-09 | 中国航空工业集团公司沈阳发动机设计研究所 | Pipeline joint locking device |
-
2016
- 2016-02-22 CN CN201610095356.7A patent/CN105650659B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2425216Y (en) * | 2000-05-31 | 2001-03-28 | 范基兴 | Sand pump |
| CN1699691A (en) * | 2005-06-23 | 2005-11-23 | 沙同庆 | Anti-theft rail clip on railroad |
| CN202682638U (en) * | 2012-03-13 | 2013-01-23 | 承弘工业股份有限公司 | Fire-fighting sprinkler head structure |
| CN203784067U (en) * | 2014-03-20 | 2014-08-20 | 邵传江 | Reusable anti-theft bolt |
| CN204458475U (en) * | 2014-12-22 | 2015-07-08 | 芜湖美智空调设备有限公司 | Linkage structure and air conditioner |
| CN105066157A (en) * | 2015-08-14 | 2015-11-18 | 吉首大学 | Tail gas recovery dust removal type coal-fired boiler |
| CN105135101A (en) * | 2015-09-17 | 2015-12-09 | 中国航空工业集团公司沈阳发动机设计研究所 | Pipeline joint locking device |
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| Publication number | Publication date |
|---|---|
| CN105650659A (en) | 2016-06-08 |
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Effective date of registration: 20180605 Address after: 510640 2401, unit 371-1, Zhong Gong education building, five mountain road, Tianhe District, Guangzhou, Guangdong. Applicant after: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. Address before: 416000 No. 120 Renmin South Road, Jishou City, Xiangxi Tujia and Miao Autonomous Prefecture, Hunan Applicant before: Jishou University Effective date of registration: 20180605 Address after: 410000 development road of Ningxiang Economic Development Zone, Changsha, Hunan Applicant after: CHANGSHA TIANNING THERMAL POWER Co.,Ltd. Address before: 510640 2401, unit 371-1, Zhong Gong education building, five mountain road, Tianhe District, Guangzhou, Guangdong. Applicant before: GUANGDONG GAOHANG INTELLECTUAL PROPERTY OPERATION Co.,Ltd. |
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Denomination of invention: Cyclone wet dust collection type energy-saving coal-fired boiler Effective date of registration: 20200723 Granted publication date: 20180713 Pledgee: Ningxiang Hunan rural commercial bank Limited by Share Ltd. Pledgor: CHANGSHA TIANNING THERMAL POWER Co.,Ltd. Registration number: Y2020980004324 |
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Date of cancellation: 20230725 Granted publication date: 20180713 Pledgee: Ningxiang Hunan rural commercial bank Limited by Share Ltd. Pledgor: CHANGSHA TIANNING THERMAL POWER Co.,Ltd. Registration number: Y2020980004324 |