CN219932314U - Heat energy recovery mechanism of cogeneration unit - Google Patents
Heat energy recovery mechanism of cogeneration unit Download PDFInfo
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- CN219932314U CN219932314U CN202321414114.1U CN202321414114U CN219932314U CN 219932314 U CN219932314 U CN 219932314U CN 202321414114 U CN202321414114 U CN 202321414114U CN 219932314 U CN219932314 U CN 219932314U
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- heat exchanger
- energy recovery
- heat
- combustion engine
- gas
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- 238000011084 recovery Methods 0.000 title claims abstract description 31
- 230000007246 mechanism Effects 0.000 title claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 238000002485 combustion reaction Methods 0.000 claims abstract description 44
- 238000010438 heat treatment Methods 0.000 claims abstract description 16
- 230000001105 regulatory effect Effects 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 22
- 239000003054 catalyst Substances 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 230000003197 catalytic effect Effects 0.000 claims description 3
- 239000003638 chemical reducing agent Substances 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 78
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 8
- 238000010248 power generation Methods 0.000 description 7
- 238000010531 catalytic reduction reaction Methods 0.000 description 6
- 239000000779 smoke Substances 0.000 description 6
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 230000000712 assembly Effects 0.000 description 4
- 238000000429 assembly Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000008236 heating water Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000003584 silencer Effects 0.000 description 2
- 239000002918 waste heat Substances 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Abstract
The utility model provides a heat energy recovery mechanism of a cogeneration unit, which comprises a gas internal combustion engine, a heat energy recovery system and an exhaust treatment system, wherein the heat energy recovery system comprises an internal circulating water pump, a cooler, a water temperature regulating branch, a cylinder sleeve, a control valve group, a first heat exchanger and a second heat exchanger, and the exhaust treatment system comprises a third heat exchanger, a first tail gas processor, a second heat exchanger and a muffler. And the external circulation heating backwater or cold water is introduced into the second heat exchanger, so that heat exchange between high-temperature difference media is realized, the heat exchange efficiency is improved, and small-temperature difference heat exchange can be realized as required.
Description
Technical Field
The utility model relates to the technical field of cogeneration, in particular to a heat energy recovery mechanism of a cogeneration unit.
Background
The gas cogeneration system is a novel energy system, and mainly uses the combustion of combustible gases such as natural gas, methane or coal bed gas to do work and generate electricity, and recovers the waste heat after combustion for refrigeration, heating and hot water or steam production. Compared with the conventional energy supply system, the system has the advantages of high comprehensive efficiency, energy conservation, environmental protection, safety, reliability, good economical efficiency and the like.
In order to improve output power of the gas internal combustion engine, an exhaust gas turbocharger is mostly adopted to carry out air intake pressurization, namely the gas internal combustion engine is a turbine pressurization type gas internal combustion engine. The method aims at utilizing the waste heat of a heat and power cogeneration system of a turbo-charged gas internal combustion engine, and mainly aims at heating and producing hot water.
At present, a lot of cases aiming at preheating recovery exist, so that not only is the heat of an internal combustion engine cylinder sleeve of a gas internal combustion engine and part of the heat of smoke after passing through an exhaust gas turbocharger recovered, but also the heat of combustible gas pressurized by the exhaust gas turbocharger is recovered and utilized, and the environmental emission requirement is considered, the discharged smoke is purified, so that the treated gas can effectively avoid environmental pollution and meets the emission requirement of gas emissions regulated by regulations.
In the prior art, as the grant publication CN209308855U discloses a cogeneration unit with a heat energy recovery system, comprising: the system comprises a power generation system, an air inlet system, an exhaust system and a heat energy recovery system; the air inlet system is connected with an air inlet of the power generation system so as to convey combustible gas to the power generation system; the exhaust system is connected with an air outlet of the power generation system so as to exhaust the smoke generated by the power generation system, wherein the exhaust system is additionally provided with a smoke catalyst; the heat energy recovery system is respectively connected with the power generation system, the air inlet system and the exhaust system, and the exhausted smoke is evolved while recovering the heat of the power generation system, the heat of the combustible gas and the heat of the smoke; however, in the above-mentioned three-way valve for temperature control between the first heat exchanger and the cooler in the cogeneration unit, the circulating liquid after heat exchange by the first heat exchanger is mixed with the circulating liquid without heat exchange, so that the circulating liquid with the temperature raised again is cooled again by the cooler and then supplied to the gas internal combustion engine, the flow is relatively complicated, and the heat exchange between low temperature difference media causes insufficient heat energy utilization and raises the working temperature of the cooler, which causes the waste of the performance of the cooling liquid and is unfavorable for the stable working of the cooler.
Disclosure of Invention
The utility model aims to provide a method which has relatively simple flow, reduces the waste of heat energy caused by heat exchange between low-temperature difference media, reduces the working temperature of a cooler, avoids the loss of the performance of cooling liquid, and is beneficial to the stable working scheme of the cooler so as to solve the problems in the prior art.
In order to achieve the above purpose, the present utility model provides the following technical solutions:
the utility model provides a cogeneration unit heat recovery mechanism, includes gas internal-combustion engine, heat recovery system, exhaust treatment system, heat recovery system includes internal circulation water pump, cooler, temperature regulation branch road, is located cylinder liner, control valve group, first heat exchanger and the second heat exchanger in the gas internal-combustion engine, wherein internal circulation water pump with the cooler links to each other, the cooler with the cylinder liner links to each other, the cylinder liner passes through control valve group with first heat exchanger links to each other, first heat exchanger with internal circulation water pump links to each other, first heat exchanger with the second heat exchanger links to each other, exhaust treatment system includes third heat exchanger, first tail gas processor, second heat exchanger and silencer, gas internal-combustion engine's gas vent passes through third heat exchanger with first tail gas processor links to each other, be equipped with a plurality of heat transfer assemblies in the third heat exchanger, just heat transfer assembly with the corresponding valve of control valve group links to each other, first heat exchanger with the second heat exchanger links to each other with the second heat exchanger, second heat exchanger with the temperature regulation branch road is connected to the gas pipeline is connected to each other with the temperature regulator, and the gas pipeline is connected to each other.
Preferably, the water temperature adjusting branch comprises a water temperature sensor, and the water temperature sensor is positioned on a pipeline between the cooler and the cylinder sleeve and is used for collecting the temperature of circulating liquid entering the gas internal combustion engine.
Preferably, the water temperature adjusting branch further comprises an electric adjusting valve, the electric adjusting valve is installed on the water temperature adjusting branch, and the connection main control unit adjusts the opening angle of the electric adjusting valve according to the temperature fed back by the water temperature sensor so as to control the temperature of circulating liquid entering the gas internal combustion engine.
Preferably, the second heat exchanger is connected with the first pipeline and is used for introducing external circulation heating backwater or cold water into the second heat exchanger.
Preferably, the first heat exchanger is connected with a third pipeline, and is used for introducing external circulation heating backwater or cold water into the first heat exchanger.
Preferably, the second heat exchanger is connected with a second pipeline, and is used for guiding heat energy of the second heat exchanger to external circulation heating water supply or hot water.
Preferably, the muffler is a resistive muffler.
Preferably, the first exhaust gas processor is an oxidation catalyst and the second exhaust gas processor is a selective catalytic reducer.
Preferably, the number of valves of the control valve group is greater than the number of heat exchange assemblies of the third heat exchanger.
Preferably, the mechanism further comprises an electric generator, and the electric generator is connected to the gas combustion engine.
Compared with the prior art, the utility model has the beneficial effects that:
according to the utility model, a temperature control three-way valve of a heat energy recovery system in the prior art is eliminated, a water temperature adjusting branch is newly added, one end of the water temperature adjusting branch is connected to a pipeline between the control valve bank and the first heat exchanger, the other end of the water temperature adjusting branch is connected to a pipeline between the cooler and the cylinder sleeve, circulating liquid passing through the first heat exchanger is not subjected to secondary heat exchange and temperature rise when passing through an internal circulating water pump, heat exchange between low-temperature difference mediums is reduced to cause heat energy waste, the working temperature of the cooler is reduced, the loss of cooling liquid performance is avoided, the circulating liquid passing through the cooler is subjected to temperature acquisition through a temperature sensor before entering the gas internal combustion engine, acquired information is fed back to a connected master control unit (such as a PLC) and is compared with the master control unit according to a preset program, so that whether the temperature of the circulating liquid entering the gas internal combustion engine meets the optimal working standard of the gas internal combustion engine or not is judged, if the opening angle of the electric adjusting valve is adjusted by the master control unit to control the circulating liquid which is not subjected to heat exchange after cooling, so that the temperature difference compensation of the circulating liquid entering the gas internal combustion engine meets the optimal working temperature.
The temperature of the circulating liquid after being output by the cooler can be collected, if the circulating liquid accords with the using temperature of the gas internal combustion engine, the circulating liquid directly enters the gas internal combustion engine, and if the circulating liquid does not accord with the using temperature, the circulating liquid can be adjusted according to the water temperature adjustment branch. Thereby making the adjusting step relatively simple and convenient.
According to the utility model, the external circulation heating backwater or cold water is introduced into the second heat exchanger, because the first tail gas processor is an oxidation catalyst, the optimal working temperature interval is 150-350 ℃, the second tail gas processor is a selective catalytic reduction device, and the optimal working temperature interval is 225-400 ℃, so that the flue gas temperature passing through the second heat exchanger is 225-350 ℃, the external circulation heating backwater or cold water exchanges heat with the second heat exchanger, the heat exchange between high-temperature-difference working mediums is realized, the heat exchange efficiency is improved, and the external circulation heating backwater or cold water can be closed as required to realize small-temperature-difference heat exchange.
Drawings
FIG. 1 is a schematic diagram of a heat recovery mechanism of a cogeneration unit of the utility model.
In the figure: 1 a gas internal combustion engine, 2 a water temperature sensor, 3 an electric regulating valve, 4 a cooler, 5 an internal circulating water pump, 6 a first heat exchanger, 7 a generator, 8 a cylinder sleeve, 9 a control valve group, 10 a third heat exchanger, 11 a first tail gas processor, 12 a second tail gas processor, 13 a second heat exchanger, 14 a muffler, 15 a first pipeline, 16 a second pipeline, 17 a third pipeline and 18 a water temperature regulating branch.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples:
referring to fig. 1, the present utility model provides a technical solution:
the utility model provides a cogeneration unit heat recovery mechanism, includes gas internal-combustion engine 1, heat recovery system, exhaust treatment system, its characterized in that: the heat energy recovery system comprises an internal circulating water pump 5, a cooler 4, a water temperature regulating branch 18, a cylinder sleeve 8, a control valve bank 9, a first heat exchanger 6 and a second heat exchanger 13 which are arranged in the gas internal combustion engine 1, wherein the internal circulating water pump 5 is connected with the cooler 4, the cooler 4 is connected with the cylinder sleeve 8, the cylinder sleeve 8 is connected with the first heat exchanger 6 through the control valve bank 9, the first heat exchanger 6 is connected with the internal circulating water pump 5, the first heat exchanger 6 is connected with the second heat exchanger 13, the exhaust gas treatment system comprises a third heat exchanger 10, a first exhaust gas processor 11, a second exhaust gas processor 12, a second heat exchanger 13 and a muffler 14, an exhaust port of the gas internal combustion engine 1 is connected with the first exhaust gas processor 11 through the third heat exchanger 10, a plurality of heat exchange assemblies are arranged in the third heat exchanger 10, the heat exchange assemblies are connected with corresponding valves of the control valve bank 9, the first heat exchanger 6 is connected with the second heat exchanger 13, the first exhaust gas processor 11 is connected with the second heat exchanger 12, the second exhaust gas processor is connected with the second heat exchanger 13 through the second heat exchanger 13, the water temperature regulating branch is connected with the second heat exchanger 13, and the exhaust gas is connected with the gas internal combustion engine 1 through the second heat exchanger 1, and the muffler is connected with the second heat exchanger 13 through the water temperature regulating branch is connected with the exhaust gas pipeline 6.
The water temperature adjusting branch 18 comprises a water temperature sensor 2, and the water temperature sensor 2 is positioned on a pipeline between the cooler 4 and the cylinder sleeve 8 and is used for collecting the temperature of circulating liquid entering the gas internal combustion engine 1 so that the temperature of the circulating liquid entering the gas internal combustion engine accords with the optimal working temperature of the gas internal combustion engine.
The water temperature regulating branch 18 further comprises an electric regulating valve 3, the electric regulating valve 3 is arranged on the water temperature regulating branch 18, and the opening angle of the electric regulating valve 3 is regulated according to the temperature fed back by the water temperature sensor 2, so that the temperature of circulating liquid entering the gas internal combustion engine 1 is controlled.
The second heat exchanger 13 is connected to the first pipeline 15, and is used for introducing external circulation heating backwater or cold water into the second heat exchanger 13, because the first tail gas processor 11 is an oxidation catalyst, the optimal working temperature interval is 150-350 ℃, the second tail gas processor 12 is a selective catalytic reducer, and the optimal working temperature interval is 225-400 ℃, so that the flue gas temperature entering the second heat exchanger 13 from the second tail gas processor 12 is 225-350 ℃, the external circulation heating backwater or cold water exchanges heat with the flue gas, the heat exchange between high temperature difference mediums is realized, the heat exchange efficiency is improved, and the external circulation heating backwater or cold water can be closed according to the requirement to realize small temperature difference heat exchange.
The first heat exchanger 6 is connected with a third pipeline 17 and is used for introducing external circulation heating backwater or cold water into the first heat exchanger 6 to heat the external circulation heating backwater or the cold water, and the second heat exchanger 13 is connected with a second pipeline 16 and is used for realizing heating or water supply by being connected with an external circulation heating water supply pipeline or a hot water supply pipeline.
The muffler 14 is a resistive muffler, and noise in the exhaust gas can be further reduced by the muffler 14, so that the noise of the exhaust gas meets the requirements of regulations.
The first exhaust gas processor 11 is an oxidation catalyst, the second exhaust gas processor 12 is a selective catalytic reduction device, the first exhaust gas processor 11 is used for reducing carbon monoxide and hydrocarbon in exhaust gas and improving the proportion of nitrogen oxides such as nitrogen monoxide and nitrogen dioxide in the exhaust gas, the optimal working temperature interval of the oxidation catalyst is 150-350 ℃, the second exhaust gas processor 12 is used for reducing nitrogen oxides in the exhaust gas, the selective catalytic reduction device adopts a copper-based catalyst, the optimal working temperature interval of the selective catalytic reduction device is 225-400 ℃, the optimal working temperature interval of the selective catalytic reduction device adopts a vanadium-based catalyst is 250-400 ℃, and the optimal working temperature interval of the selective catalytic reduction device adopts an iron-based catalyst is 300-500 ℃.
Since the liquid discharged from the gas internal combustion engine 1 can flow from the third heat exchanger 10 into the first heat exchanger 6 or can directly enter the first heat exchanger 6 without passing through the third heat exchanger 10, the number of valves of the control valve group 9 is greater than the number of heat exchange components of the third heat exchanger 10.
The heat energy recovery mechanism of the cogeneration unit further comprises a generator 7, the generator 7 is connected with the gas internal combustion engine 1, the power output end of the gas internal combustion engine 1 is connected with the power input end of the generator 7, and the mixed gas of the gas internal combustion engine 1 combusting gas and air is connected with the generator 7 through the power output end to output electric energy. Air and fuel gas enter the fuel gas internal combustion engine 1 to burn and do work to drive the generator 7 to generate electricity and output electricity, and the tail gas after burning sequentially enters the third heat exchanger 10, the first tail gas processor 11, the second tail gas processor 12, the second heat exchanger 13 and the silencer 14 and is finally directly discharged.
The remaining non-described portions of the present utility model may be the same as, or known in the art or may be implemented using, the prior art, and are not described in detail herein.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a cogeneration unit heat recovery mechanism, includes gas internal-combustion engine (1), heat recovery system, exhaust treatment system, its characterized in that: the heat energy recovery system comprises an internal circulating water pump (5), a cooler (4), a water temperature regulating branch (18), a cylinder sleeve (8) positioned in the gas internal combustion engine (1), a control valve group (9), a first heat exchanger (6) and a second heat exchanger (13), wherein the internal circulating water pump (5) is connected with the cooler (4), the cooler (4) is connected with the cylinder sleeve (8), the cylinder sleeve (8) is connected with the first heat exchanger (6) through the control valve group (9), the first heat exchanger (6) is connected with the internal circulating water pump (5), the first heat exchanger (6) is connected with the second heat exchanger (13), the exhaust treatment system comprises a third heat exchanger (10), a first exhaust gas processor (11), a second exhaust gas processor (12) and a muffler (14), an exhaust port of the gas internal combustion engine (1) is connected with the first heat exchanger (6) through the third heat exchanger (10), the first heat exchanger (10) is connected with the second heat exchanger (12) correspondingly, the second heat exchanger (12) is connected with the exhaust gas treatment assembly (12), the second tail gas processor (12) is connected with the second heat exchanger (13), the second heat exchanger (13) is connected with the muffler (14), one end of the water temperature adjusting branch (18) is connected to a pipeline between the control valve group (9) and the first heat exchanger (6), and the other end of the water temperature adjusting branch is connected to a pipeline between the cooler (4) and the cylinder sleeve (8) and is used for adjusting the temperature of circulating liquid entering the gas internal combustion engine (1).
2. The cogeneration unit heat energy recovery mechanism of claim 1, wherein: the water temperature adjusting branch circuit (18) comprises a water temperature sensor (2), and the water temperature sensor (2) is positioned on a pipeline between the cooler (4) and the cylinder sleeve (8) and is used for collecting the temperature of circulating liquid entering the gas internal combustion engine (1).
3. The cogeneration unit heat energy recovery mechanism of claim 2, wherein: the water temperature adjusting branch circuit (18) further comprises an electric adjusting valve (3), the electric adjusting valve (3) is arranged on the water temperature adjusting branch circuit (18) and used for adjusting the opening angle of the electric adjusting valve (3) according to the temperature fed back by the water temperature sensor (2) so as to control the temperature of circulating liquid entering the gas internal combustion engine (1).
4. The cogeneration unit heat energy recovery mechanism of claim 1, wherein: the second heat exchanger (13) is connected with the first pipeline (15) and is used for introducing external circulation heating backwater or cold water into the second heat exchanger (13).
5. The cogeneration unit heat energy recovery mechanism of claim 1, wherein: the first heat exchanger (6) is connected with a third pipeline (17) and is used for introducing external circulation heating backwater or cold water into the first heat exchanger (6).
6. The cogeneration unit heat energy recovery mechanism of claim 1, wherein: the second heat exchanger (13) is connected with a second pipeline (16).
7. The cogeneration unit heat energy recovery mechanism of claim 1, wherein: the muffler (14) is a resistive muffler.
8. The cogeneration unit heat energy recovery mechanism of claim 1, wherein: the first exhaust gas processor (11) is an oxidation catalyst and the second exhaust gas processor (12) is a selective catalytic reducer.
9. The cogeneration unit heat energy recovery mechanism of claim 1, wherein: the number of the valves of the control valve group (9) is more than the number of the heat exchange components of the third heat exchanger (10).
10. The cogeneration unit heat energy recovery mechanism of claim 1, wherein: the gas combustion engine also comprises a generator (7), and the generator (7) is connected with the gas combustion engine (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321414114.1U CN219932314U (en) | 2023-06-05 | 2023-06-05 | Heat energy recovery mechanism of cogeneration unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321414114.1U CN219932314U (en) | 2023-06-05 | 2023-06-05 | Heat energy recovery mechanism of cogeneration unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219932314U true CN219932314U (en) | 2023-10-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321414114.1U Active CN219932314U (en) | 2023-06-05 | 2023-06-05 | Heat energy recovery mechanism of cogeneration unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219932314U (en) |
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2023
- 2023-06-05 CN CN202321414114.1U patent/CN219932314U/en active Active
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