CN103759459A - Flue gas and hot water single and double effect compounded lithium-bromide absorption refrigerating unit - Google Patents
Flue gas and hot water single and double effect compounded lithium-bromide absorption refrigerating unit Download PDFInfo
- Publication number
- CN103759459A CN103759459A CN201410021934.3A CN201410021934A CN103759459A CN 103759459 A CN103759459 A CN 103759459A CN 201410021934 A CN201410021934 A CN 201410021934A CN 103759459 A CN103759459 A CN 103759459A
- Authority
- CN
- China
- Prior art keywords
- pressure generator
- heat exchanger
- flue gas
- high pressure
- generator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A30/00—Adapting or protecting infrastructure or their operation
- Y02A30/27—Relating to heating, ventilation or air conditioning [HVAC] technologies
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/62—Absorption based systems
Abstract
The invention relates a flue gas and hot water single and double effect compounded lithium-bromide absorption refrigerating unit. The lithium-bromide absorption refrigerating unit comprises a high-pressure generator, an evaporator (1), an absorber (2), a compound low-pressure generator (20), a condenser (23), a high-temperature heat exchanger (6) and a low-temperature heat exchanger (5). The compound low-pressure generator (20) comprises a hot water generator (21) and a steam generator (22), a flue gas solution heat exchanger (36) is arranged in a flue gas waste heat outlet pipe (12) of the high-pressure generator, a dilute solution outlet pipe of the low-temperature heat exchanger (5) serves as a flue gas solution heat exchanger liquid inlet pipe (34) connected to the flue gas solution heat exchanger (36), a flue gas solution heat exchanger liquid outlet pipe (35) serving as a hot water generator liquid inlet pipe (18) is connected to the compound low-pressure generator (20), and a heat source hot water inlet pipe (9) is arranged on the compound low-pressure generator (20). By the arrangement, discharging temperature of waste heat flue gas can be further lowered during refrigerating operation and heat supplying operation of the refrigerating unit.
Description
Technical field
The present invention relates to a kind of lithium-bromide absorption-type refrigerating machine.Belong to air conditioner technical field.
Background technology
The fume hot-water single-double effect compound type lithium bromide absorption type hot and cold water unit as depicted in figs. 1 and 2 of a kind of fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit in the past.The compound low pressure generator 20 of two units is comprised of hot water generator 21 and steam generator 22, is provided with booster 4 on hot water generator drain pipe 17, on the waste heat smoke outlet tube 12 of flue gas type high pressure generator 8, is provided with fume hot-water heat exchanger 10.This unit energy utilizes the high-temperature residual heat flue gas of external device (ED) discharge and waste heat hot water (being called again thermal source hot water) to drive refrigerating operaton simultaneously, utilize separately high-temperature residual heat flue gas to drive refrigeration and heating operation, be mainly used in the Distribution of Natural formula energy supplying system of thermal source hot water backwater temperature lower (more than approximately 80 ℃).During unit refrigerating operaton, utilize and in fume hot-water heat exchanger, carry out heat exchange from thermal source hot water and the low temperature exhaust heat flue gas of the external device (ED)s such as gas engine, reclaim low-temperature flue gas heat, waste heat smog discharge temperature can be reduced to approximately 120 ℃.In Fig. 2 unit, dispose Direct Fired High Pressure Generator 31(and be called again fuel supplementing type high pressure generator), flue gas type high pressure generator 8 and Direct Fired High Pressure Generator are cascaded structure arranged in form, two centres occurred frequently are provided with solution cross over pipe 32 occurred frequently, the split type fuel supplementing type high pressure generator of the common composition of flue gas type high pressure generator 8, Direct Fired High Pressure Generator and solution cross over pipe three occurred frequently.The waste heat flue gas heat providing when external device (ED) and hot water heat sum are less than unit cooling (heat supply) and load required while adding heat, the control system of unit starts burner 30 and moves, for unit provides supplementary heating amount, to meet cooling (heat supply) demand, the flue gas that combustion fuel produces enters atmosphere through afterburning smoke outlet tube 33 and external chimney (not shown) thereof.But there is following weak point in this unit:
1, because of the thermal source hot water temperature from external device (ED)s such as gas engines higher (generally 95 ℃ of left and right), during unit refrigerating operaton, be difficult to waste heat smog discharge temperature to drop to lower, waste heat flue gas heat is not fully recycled.
2, during unit heat supply running, thermal source hot water is generally through external heat exchanger heat exchange, and not into and out of unit, waste heat smog discharge temperature can only be reduced to approximately 145 ℃, and waste heat flue gas heat recovery utilization rate during unit heat supply running is lower.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, a kind of fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit is provided, make unit can the exhaust temperature of waste heat flue gas be dropped to lower when refrigerating operaton and heat supply running.
The object of the present invention is achieved like this: a kind of fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit, comprise high pressure generator, evaporimeter, absorber, compound low pressure generator, condenser, high-temperature heat exchanger and low temperature heat exchanger, compound low pressure generator comprises hot water generator and steam generator, on the waste heat smoke outlet tube of high pressure generator, be provided with smoke solution heat exchanger, the weak solution drain pipe of low temperature heat exchanger is received on smoke solution heat exchanger as smoke solution heat exchanger feed tube, smoke solution heat exchanger drain pipe is received on compound low pressure generator as hot water generator feed tube, thermal source hot water inlet pipe is arranged on compound low pressure generator.
Fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit of the present invention is provided with booster on hot water generator drain pipe.
Fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit of the present invention, described high pressure generator is flue gas type high pressure generator.
Fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit of the present invention, described high pressure generator comprises flue gas type high pressure generator and Direct Fired High Pressure Generator, or is the split type fuel supplementing type high pressure generator being comprised of flue gas type high pressure generator, Direct Fired High Pressure Generator and solution cross over pipe occurred frequently.
Fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit of the present invention, described high pressure generator is integral type fuel supplementing type high pressure generator.
The invention has the beneficial effects as follows:
The present invention replaces the fume hot-water heat exchanger in fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit in the past with smoke solution heat exchanger, carry out heat exchange with the lower lithium-bromide solution of temperature and low-temperature flue gas, make unit can the exhaust temperature of waste heat flue gas be dropped to lower when refrigerating operaton and heat supply running, waste heat flue gas heat is fully recycled, and comprehensive utilization of energy rate is further enhanced.
Accompanying drawing explanation
Fig. 1 is fume hot-water single-double effect compound type lithium bromide absorption type hot and cold water unit structural representation in the past.
Fig. 2 is fume hot-water afterburning single-double effect compound type lithium bromide absorption type hot and cold water unit structural representation in the past.
Fig. 3 is fume hot-water single-double effect compound type lithium bromide absorption type refrigerating unit structure schematic diagram of the present invention.
Fig. 4 is fume hot-water afterburning single-double effect compound type lithium bromide absorption type refrigerating unit structure schematic diagram of the present invention, and fuel supplementing type high pressure generator is split type afterburning structure.
Fig. 5 is fume hot-water afterburning single-double effect compound type lithium bromide absorption type refrigerating unit structure schematic diagram of the present invention, and fuel supplementing type high pressure generator is integral type afterburning structure.
Fig. 6 is the structural representation that the cooling water of fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit of the present invention adopts serial flow.
Reference numeral in figure:
The specific embodiment
The present invention is unit as shown in Figure 3, and this unit is by the pipeline of flue gas type high pressure generator 8, evaporimeter 1, absorber 2, compound low pressure generator 20, condenser 23, high-temperature heat exchanger 6, low temperature heat exchanger 5, solution pump 27, booster 4, cryogenic fluid pump 28, control system (not shown) and connecting components, fume hot-water single-double effect compound type lithium bromide absorption type hot and cold water unit that valve forms.Compound low pressure generator 20 is comprised of hot water generator 21 and steam generator 22, on the waste heat smoke outlet tube 12 of flue gas type high pressure generator 8, is provided with smoke solution heat exchanger 36, and booster 4 is arranged on hot water generator drain pipe 17; The weak solution drain pipe of low temperature heat exchanger 5 is received on smoke solution heat exchanger 36 as smoke solution heat exchanger feed tube 34, and smoke solution heat exchanger drain pipe 35 is received on compound low pressure generator 20 as hot water generator feed tube 18; Thermal source hot water inlet pipe 9 is arranged on compound low pressure generator 20; On the pipeline between drain pipe 7 occurred frequently and absorber 2, solution transfer valve 3 is housed; On the pipeline between refrigerant vapour pipe 15 and evaporimeter 1, steam transfer valve 16 is housed.
Unit utilizes separately waste heat flue gas or utilizes waste heat flue gas and during hot water heating refrigerating operaton, solution transfer valve 3 and steam transfer valve 16 are closed simultaneously.High-temperature residual heat flue gas from external device (ED)s such as gas engines enters flue gas type high pressure generator 8 through waste heat flue gas inlet tube 14, and lithium-bromide solution, temperature wherein of heating is reduced to approximately 170 ℃ and through waste heat smoke outlet tube 12, enters smoke solution heat exchanger 36 after becoming low temperature exhaust heat flue gas; By solution pump 27, from the weak solution of output absorber 2, after being warming up to approximately 80 ℃, low temperature heat exchanger 5 heat exchange enter smoke solution heat exchanger 36 through smoke solution heat exchanger feed tube 34, after heating up with the further heat exchange of low temperature exhaust heat flue gas through smoke solution heat exchanger drain pipe 35(hot water generator feed tube 18) enter hot water generator 21, the temperature of waste heat flue gas drops to after 100 ℃ and enters atmosphere through waste heat smoke discharge pipe 11.
During unit heat supply running, solution transfer valve 3 and steam transfer valve 16 are opened.High-temperature residual heat flue gas from external device (ED)s such as gas engines enters flue gas type high pressure generator 8 through waste heat flue gas inlet tube 14, and lithium-bromide solution, temperature wherein of heating is reduced to approximately 145 ℃ and through waste heat smoke outlet tube 12, enters smoke solution heat exchanger 36 after becoming low temperature exhaust heat flue gas; The weak solution (temperature is about 95 ℃) of being exported from absorber 2 by solution pump 27 enters smoke solution heat exchanger 36 through low temperature heat exchanger 5, smoke solution heat exchanger feed tube 34, after heating up with low temperature exhaust heat flue gas heat exchange through smoke solution heat exchanger drain pipe 35(hot water generator feed tube 18) enter hot water generator 21, by booster 4, deliver into flue gas type high pressure generator 8 again, the temperature of waste heat flue gas drops to after 115 ℃ and enters atmosphere through waste heat smoke discharge pipe 11.
In unit shown in Fig. 3, set up Direct Fired High Pressure Generator 31 and solution cross over pipe 32 occurred frequently, this unit becomes the fume hot-water afterburning single-double effect compound type lithium bromide absorption type hot and cold water unit shown in Fig. 4.
With the flue gas type high pressure generator 8 in unit shown in integral type fuel supplementing type high pressure generator 37 alternate figures 3, this unit becomes the fume hot-water afterburning single-double effect compound type lithium bromide absorption type hot and cold water unit shown in Fig. 5.
But the cooling water flow path parallel-connection flow of unit (as shown in Fig. 3, Fig. 4, Fig. 5), also serial flow (as shown in Figure 6).
Cancel solution transfer valve, steam transfer valve and tube connector thereof in unit shown in Fig. 3～Fig. 6, unit becomes fume hot-water (afterburning) the single-double effect compound type lithium bromide absorption type handpiece Water Chilling Units for separate refrigeration.
Claims (6)
1. a fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit, comprise high pressure generator, evaporimeter (1), absorber (2), compound low pressure generator (20), condenser (23), high-temperature heat exchanger (6) and low temperature heat exchanger (5), compound low pressure generator (20) comprises hot water generator (21) and steam generator (22), it is characterized in that: on the waste heat smoke outlet tube (12) of high pressure generator, be provided with smoke solution heat exchanger (36), the weak solution drain pipe of low temperature heat exchanger (5) is received on smoke solution heat exchanger (36) as smoke solution heat exchanger feed tube (34), smoke solution heat exchanger drain pipe (35) is received on compound low pressure generator (20) as hot water generator feed tube (18), thermal source hot water inlet pipe (9) is arranged on compound low pressure generator (20).
2. a kind of fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit according to claim 1, is characterized in that: on hot water generator drain pipe (17), be provided with booster (4).
3. a kind of fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit according to claim 1 and 2, is characterized in that: described high pressure generator is flue gas type high pressure generator (8).
4. a kind of fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit according to claim 1 and 2, it is characterized in that: described high pressure generator comprises flue gas type high pressure generator (8) and Direct Fired High Pressure Generator (31), or be the split type fuel supplementing type high pressure generator being formed by flue gas type high pressure generator (8), Direct Fired High Pressure Generator (31) and solution cross over pipe occurred frequently (32).
5. a kind of fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit according to claim 1 and 2, is characterized in that: described high pressure generator is integral type fuel supplementing type high pressure generator (37).
6. a kind of fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit according to claim 1 and 2, is characterized in that: the cooling water flow path of described unit is parallel-connection flow or serial flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410021934.3A CN103759459B (en) | 2014-01-18 | 2014-01-18 | Fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410021934.3A CN103759459B (en) | 2014-01-18 | 2014-01-18 | Fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103759459A true CN103759459A (en) | 2014-04-30 |
| CN103759459B CN103759459B (en) | 2015-08-12 |
Family
ID=50526736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410021934.3A Active CN103759459B (en) | 2014-01-18 | 2014-01-18 | Fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103759459B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477908A (en) * | 2017-08-15 | 2017-12-15 | 双良节能系统股份有限公司 | Hot water afterburning single-double effect compound type lithium bromide absorption type handpiece Water Chilling Units |
| CN107477907A (en) * | 2017-08-15 | 2017-12-15 | 双良节能系统股份有限公司 | Fume hot-water compound type lithium bromide absorption type handpiece Water Chilling Units |
| CN107477906A (en) * | 2017-08-15 | 2017-12-15 | 双良节能系统股份有限公司 | Fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570514A (en) * | 2003-07-23 | 2005-01-26 | 张跃 | Absorption type air-conditioning system |
| CN2677832Y (en) * | 2003-11-14 | 2005-02-09 | 江苏双良空调设备股份有限公司 | Residual-heat double-action lithium bromide absorption hot-cold water machine set |
| CN2864508Y (en) * | 2005-12-23 | 2007-01-31 | 江苏双良空调设备股份有限公司 | Lithium bromide absorption refrigeration and heating machine set with flue solution heat exchanger |
| CN2884057Y (en) * | 2006-03-28 | 2007-03-28 | 大连三洋制冷有限公司 | Lithium bromide absorption type cold/hot water machine using steam/direct combustion of fuel as energy-source |
| US20080034785A1 (en) * | 2004-05-11 | 2008-02-14 | Cyclect Singapore Pte Ltd. | Regenerative Adsorption System |
| CN201340134Y (en) * | 2009-01-08 | 2009-11-04 | 江苏双良空调设备股份有限公司 | Smoke hot water type lithium bromide absorption cold water/hot and cold water set having booster pump |
| CN203010995U (en) * | 2012-12-27 | 2013-06-19 | 双良节能系统股份有限公司 | Direct-fired lithium bromide absorption type cold and hot water unit for recovering flue gas waste heat |
| CN203704428U (en) * | 2014-01-18 | 2014-07-09 | 双良节能系统股份有限公司 | Flue gas hot water single-effect or dual-effect composite-type lithium bromide absorption-type cold water and cold hot water unit |
-
2014
- 2014-01-18 CN CN201410021934.3A patent/CN103759459B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570514A (en) * | 2003-07-23 | 2005-01-26 | 张跃 | Absorption type air-conditioning system |
| CN2677832Y (en) * | 2003-11-14 | 2005-02-09 | 江苏双良空调设备股份有限公司 | Residual-heat double-action lithium bromide absorption hot-cold water machine set |
| US20080034785A1 (en) * | 2004-05-11 | 2008-02-14 | Cyclect Singapore Pte Ltd. | Regenerative Adsorption System |
| CN2864508Y (en) * | 2005-12-23 | 2007-01-31 | 江苏双良空调设备股份有限公司 | Lithium bromide absorption refrigeration and heating machine set with flue solution heat exchanger |
| CN2884057Y (en) * | 2006-03-28 | 2007-03-28 | 大连三洋制冷有限公司 | Lithium bromide absorption type cold/hot water machine using steam/direct combustion of fuel as energy-source |
| CN201340134Y (en) * | 2009-01-08 | 2009-11-04 | 江苏双良空调设备股份有限公司 | Smoke hot water type lithium bromide absorption cold water/hot and cold water set having booster pump |
| CN203010995U (en) * | 2012-12-27 | 2013-06-19 | 双良节能系统股份有限公司 | Direct-fired lithium bromide absorption type cold and hot water unit for recovering flue gas waste heat |
| CN203704428U (en) * | 2014-01-18 | 2014-07-09 | 双良节能系统股份有限公司 | Flue gas hot water single-effect or dual-effect composite-type lithium bromide absorption-type cold water and cold hot water unit |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107477908A (en) * | 2017-08-15 | 2017-12-15 | 双良节能系统股份有限公司 | Hot water afterburning single-double effect compound type lithium bromide absorption type handpiece Water Chilling Units |
| CN107477907A (en) * | 2017-08-15 | 2017-12-15 | 双良节能系统股份有限公司 | Fume hot-water compound type lithium bromide absorption type handpiece Water Chilling Units |
| CN107477906A (en) * | 2017-08-15 | 2017-12-15 | 双良节能系统股份有限公司 | Fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103759459B (en) | 2015-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105423592B (en) | Double-working-condition direct combustion dual effect type lithium bromide absorption type heat pump unit | |
| CN103759462B (en) | With the flue gas type lithium bromide absorption refrigerating set of smoke solution heat exchanger | |
| CN206785443U (en) | A kind of high-pressure natural gas cogeneration distributed energy resource system | |
| CN104832290A (en) | Distributed type energy resource flue gas waste heat deep utilization system | |
| CN105423593A (en) | Heating normal-temperature smoke exhaust direct combustion type lithium bromide absorbing type cold and hot water unit | |
| CN107905897A (en) | Gas turbine cycle flue gas waste heat recovery and inlet gas cooling association system and method | |
| CN105423595A (en) | Heating efficient energy-saving direct combustion type lithium bromide absorbing type cold and hot water unit | |
| CN105423594A (en) | Heating normal-temperature smoke discharge smoke hot water type lithium bromide absorbing type cold and hot water unit | |
| CN202470536U (en) | Double-high flue gas hot-water after-burning type lithium bromide absorption type cold and hot water unit | |
| CN205279505U (en) | Duplex condition direct combustion economic benefits and social benefits type lithium bromide absorption heat pump unit | |
| CN103759467A (en) | Two-section smoke hot water single-dual effect composite lithium bromide absorption refrigerating unit | |
| CN103759459B (en) | Fume hot-water single-double effect compound type lithium bromide absorption type refrigeration unit | |
| CN203704428U (en) | Flue gas hot water single-effect or dual-effect composite-type lithium bromide absorption-type cold water and cold hot water unit | |
| CN203704427U (en) | Two-section type flue gas hot water single effect and double effect combined type lithium bromide absorption type water chilling unit | |
| CN103233821B (en) | A kind of air temperature regulating system | |
| CN203704442U (en) | Two-section type flue gas hot water single effect and double effect lithium bromide absorption type water chilling unit | |
| CN205279511U (en) | Energy -efficient direct combustion type lithium bromide absorption formula of heating is cold, hot water unit | |
| CN103759461B (en) | With the fume hot-water type lithium bromide absorption refrigerating set of smoke solution heat exchanger | |
| CN103759460B (en) | Two-period form fume hot-water single-double effect compound type lithium bromide absorption type handpiece Water Chilling Units | |
| CN208154872U (en) | Hot water fall connect direct combustion dual effect type lithium bromide absorption type heat pump unit | |
| CN203704430U (en) | Smoke-type lithium bromide absorption refrigerating unit with smoke-solution heat exchanger | |
| CN105402927A (en) | Dual-condition direct-combustion type single-effect lithium bromide absorption heat pump set | |
| CN203704429U (en) | Flue gas hot water single-effect or dual-effect composite-type lithium bromide absorption refrigeration unit | |
| CN203704431U (en) | Smoke-heating-water-type lithium bromide absorption refrigerating unit with smoke-solution heat exchanger | |
| CN103776193B (en) | Fume hot-water single-double effect compound type lithium bromide absorption type cold water, water chiller-heater unit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |