CN205243564U - LNG transport ship cold energy and used heat comprehensive utilization system - Google Patents
LNG transport ship cold energy and used heat comprehensive utilization system Download PDFInfo
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- CN205243564U CN205243564U CN201520890466.3U CN201520890466U CN205243564U CN 205243564 U CN205243564 U CN 205243564U CN 201520890466 U CN201520890466 U CN 201520890466U CN 205243564 U CN205243564 U CN 205243564U
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- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The utility model relates to a LNG transport ship cold energy and used heat comprehensive utilization system, including high -pressure pump, first heat exchanger, second heat exchanger, third heat exchanger, first inflation acting unit and second inflation acting unit. First heat exchanger and second heat exchanger connect gradually on the outlet line of high -pressure pump, and first inflation acting unit and second inflation acting unit coordination are on the outlet line of second heat exchanger. This system utilizes LNG cold energy, steam turbine exhaust steam and the boiler waste heat of discharging fume, and the liquid LNG that vaporizes promotes the fan on the expansion turbine machine acting direct drive boiler, has not only realized the discharge fume abundant comprehensive utilization of waste heat of LNG cold energy, steam turbine exhaust steam and boiler, still practices thrift a large amount of electric energy to practice thrift the operation cost of boats and ships, have the fine economic nature and the feature of environmental protection.
Description
Technical field
The utility model patent relates to field of energy utilization, is specifically related to a kind of LNG cargo ship cold energy and used heat utilization system.
Background technology
LNG is the abbreviation of English liquefied natural gas (liquefiednaturalgas). Natural gas is a kind of by clean, the efficient energy taking methane as main component, natural gas meets world energy sources strategy development requirement, current many nation-building a lot of LNG receiving stations, approximately 500 of the LNG ships that transports of whole world operation, nearly 10 of the Large LNG cargo ship that domestic Shipping Company has, more than 10 of the number of the lease LNG of offshore company cargo ship, along with the increase of natural gas demand, the LNG cargo ship of coming 10 years operation will reach 50-70 left and right. LNG cargo ship is using LNG fuel to have advantageous advantage aspect the energy consumption of cabin power set.
The new anti-pollution convention of International Maritime Organization (IMO) is to SOXAnd NOXEmission request Deng waste gas is more and more higher, compare the price of fuel oil unstable with and a large amount of CO of burning and exhausting2And SOXEtc. harmful substance, the LNG market price is stable and lower, and the harmful substance such as sulfur-bearing, dust hardly after burning, the CO of discharge2And NOXLess, above-mentioned advantage and the new demand of pact impel more LNG cargo ships mainly to use or even use completely LNG as fuel.
The fuel of LNG cargo ship mainly contains two kinds of fuel oil and LNG. The power set in 70%LNG cargo ship cabin are Steam Power Equipments at present. In Steam Power Equipment, by 2 boiler combustion fuel oil or LNG, then 2 boilers produce the also common pushing turbine of steam and drive screw, and boats and ships are constantly advanced. Wherein in every boiler operatiopn, need 2 blower fans constantly to blow for the needed O of burning to burner hearth2, every Fans peak power is 185KW, therefore, blower fan is one of capital equipment of cabin power consumption.
LNG cargo ship taking LNG as fuel utilizes at the boil-off gas (BOG) of transportation middle hold generation and the operative liquid LNG of forced vaporization completely, because the power (taking Steam Power Equipment as example) of LNG cargo ship is larger, need to consume nearly 300m every day3LNG (calculating according to liquid volume), the approximately m more than 100 BOG every day that cargo hold produces3(folding synthesizing liquid volume), therefore also needs the 150～170m that vaporizes3-163 DEG C of liquid LNG, need so a large amount of Boiler Steam heats to carry out the liquid LNG of forced vaporization to meet the burning needs of boiler, in this vaporescence, not only consumed the thermal source of a large amount of Boiler Steam, but also wasted a large amount of cold energy of LNG.
Utility model content
The purpose of this utility model is to provide a kind of LNG cargo ship cold energy and used heat utilization system. This system is utilized LNG cold energy, exhaust steam in steam turbine and boiler exhaust gas waste heat, the liquid LNG that vaporizes promotes expansion turbine acting and directly drives the blower fan on boiler, so not only utilize LNG cold energy, exhaust steam in steam turbine and boiler exhaust gas waste heat, also save a large amount of electric energy, thereby save the operation cost of boats and ships, there is good economy and the feature of environmental protection.
For achieving the above object, the technical solution of the utility model is as follows.
A kind of LNG cargo ship cold energy and used heat utilization system, First Heat Exchanger and the second heat exchanger are connected in turn on the outlet line of high-pressure pump, and the first expansion acting unit and the second expansion acting unit are connected on the outlet line of the second heat exchanger side by side; Described the first expansion acting unit comprises the first expansion turbine, first stud gear case, first clutch, the first blower fan, second clutch, the second blower fan, the first frequency converter, the first threephase asynchronous machine, the second threephase asynchronous machine, the 3rd blower fan, and the first blower fan, the second blower fan, the 3rd blower fan are connected on first clutch, second clutch, the second threephase asynchronous machine; First clutch and second clutch are arranged on the output of first stud gear case, and the first expansion turbine and the first threephase asynchronous machine are arranged on the input of first stud gear case; Described the second expansion acting unit comprises the second expansion turbine, second stud gear case, the 3rd clutch, four fan device, four clutches, tendencies machine, the second frequency converter, the 3rd threephase asynchronous machine, the 4th threephase asynchronous machine, the 6th blower fan; Four fan device, tendencies machine, the 6th blower fan are connected on the 3rd clutch, four clutches, the 4th threephase asynchronous machine; The 3rd clutch and four clutches are arranged on the output of second stud gear case, and the second expansion turbine and the 3rd threephase asynchronous machine are arranged on the input of second stud gear case; The first expansion turbine, the second expansion turbine are all connected between the second heat exchanger and the 3rd heat exchanger.
Further, First Heat Exchanger outlet is connected with condenser.
Further, first clutch, second clutch are separately positioned between the first blower fan, the second blower fan and first stud gear case.
Further, the 3rd clutch, four clutches are separately positioned between four fan device, tendencies machine and second stud gear case.
The first blower fan, the second blower fan, the fan sheet corner of the 3rd blower fan can regulate, thereby change air output, when the first blower fan, when the fan sheet corner of the second blower fan changes, the first blower fan, the second blower fan load can change, in the time that load increases, the output shaft rotating speed of first stud gear case declines, the first frequency converter is by the value of feedback comparison of set-point and feedback signal, thereby change frequency and control the first threephase asynchronous machine loading, improve rotating speed with this, meet the requirements of rotating speed 1780rpm, in the time that load reduces, the control of the first frequency converter is contrary, meet the requirements of equally rotating speed.
Four fan device, tendencies machine, the fan sheet corner of the 6th blower fan can regulate, thereby change air output, when four fan device, when the fan sheet corner of tendencies machine changes, four fan device, tendencies machine load can change, in the time that load increases, the output shaft rotating speed of second stud gear case declines, the second frequency converter is by the value of feedback comparison of set-point and feedback signal, thereby change frequency and control the 3rd threephase asynchronous machine loading, improve rotating speed with this, meet the requirements of rotating speed 1780rpm, in the time that load reduces, the control of the second frequency converter is contrary, meet the requirements of equally rotating speed.
In described LNG cargo ship cold energy and used heat utilization system, the liquid LNG that comes from boats and ships cargo tank is pressurized to 30MPa left and right by high-pressure pump, enter First Heat Exchanger, in First Heat Exchanger, the LNG (temperature of LNG is-163 DEG C) of cryogenic high pressure carries out heat exchange again with the exhaust steam in steam turbine of the 3rd heat exchanger heat exchange, makes cryogenic high pressure LNG become the natural gas of gaseous state.
In described LNG cargo ship cold energy and used heat utilization system, from First Heat Exchanger gaseous natural gas out the second heat exchanger with the smoke discharging residual heat of boiler (when normal duty, 160 DEG C of exhaust gas temperatures) carry out heat exchange, become the natural gas (temperature is greatly about 130 DEG C of-150 DEG C of left and right) of high temperature.
In described a kind of LNG cargo ship cold energy and used heat utilization system, enter respectively the first expansion turbine, the second expansion turbine acting from the natural gas (temperature is greatly about 130 DEG C of-150 DEG C of left and right) of the second heat exchanger high temperature out, and drive the first blower fan, second blower fan of two output same rotational speed and pass through second stud gear case the four fan device, the tendencies machine that drive two output same rotational speed by first stud gear case respectively.
Described first expands in acting unit, between the first blower fan, the second blower fan and first stud gear case, be respectively equipped with first clutch, second clutch, when any one blower fan damages therein, can depart from first stud gear case to ensure its maintenance, not affect other fan operation.
Described first expands in acting unit, and the first frequency converter can change frequency by the speed feedback signal of the first blower fan and the second blower fan respectively and control the first threephase asynchronous machine, to meet the constant rotational speed demand of the first blower fan and the second blower fan. Do work and cannot meet the workload demand of the first blower fan and the second blower fan when the first expansion turbine, the first frequency converter meets the load needs of the first blower fan and the second blower fan by changing the load of the first threephase asynchronous machine. Under special circumstances, in the time that the first blower fan or the second blower fan are thrown off with first clutch or second clutch respectively because of fault, the first expansion turbine is likely greater than the load of the first blower fan or the second blower fan, now the first threephase asynchronous machine is negative torque, thereby the first threephase asynchronous machine becomes generator to the power supply of network of ship feedback. Ensure in any case, can make full use of the mechanical power of the first expansion turbine.
In the second described expansion acting unit, between four fan device, tendencies machine and second stud gear case, be respectively equipped with the 3rd clutch, four clutches, when any one blower fan damage therein, can depart from second stud gear case to ensure its maintenance, not affect other fan operation.
In the second described expansion acting unit, the second frequency converter can change frequency by the speed feedback signal of four fan device and tendencies machine respectively control the 3rd threephase asynchronous machine, to meet the constant rotational speed demand of four fan device and tendencies machine. Do work and cannot meet the workload demand of four fan device and tendencies machine when the second expansion turbine, the second frequency converter meets the load needs of four fan device and tendencies machine by changing the load of the second threephase asynchronous machine. Under special circumstances, when four fan device or tendencies machine are because fault is when the 3rd clutch or four clutches are thrown off respectively, the second expansion turbine is likely greater than the load of four fan device or tendencies machine, now the 3rd threephase asynchronous machine is negative torque, thereby the 3rd threephase asynchronous machine becomes generator to the power supply of network of ship feedback. Ensure in any case, can make full use of the mechanical power of the second expansion turbine.
In described a kind of LNG cargo ship cold energy and used heat utilization system, expand from the first expansion acting unit, second gaseous natural gas (pressure of natural gas is 0.1MPa) of the low-temp low-pressure that acting unit transports respectively the 3rd heat exchanger with exhaust steam in steam turbine heat exchange, enter temperature before boiler at least in the requirement of 25 DEG C of left and right to meet.
The utlity model has following beneficial effect: the utility model is not only saved the high-temperature steam of the required boiler of forced vaporization LNG in traditional scheme, and make full use of the used heat of LNG cold energy, boiler exhaust gas waste heat and exhaust steam in steam turbine. Expansion turbine acting directly drives blower fan, compares expansion turbine acting and generates electricity and adopt Motor Drive blower fan, has reduced Conversion of Energy loss link, has improved system effectiveness. Between blower fan and change gear box, be provided with clutch, when any one blower fan damage therein, can depart from change gear box to ensure its maintenance, do not affect other fan operation, ensured the reliability of system. The first expansion acting unit and the second expansion acting unit are respectively equipped with frequency converter, and frequency converter can regulate the rotating speed of threephase asynchronous machine ensure the stabilization of speed of blower fan by the speed feedback of blower fan. Under special circumstances (when a certain blower fan throw-out-of clutch), if when the power of expansion turbine is greater than the power of blower fan, now threephase asynchronous machine (M1 or M3) is negative torque, threephase asynchronous machine (M1 or M3) becomes generator to the power supply of network of ship feedback, thereby guarantee system under any circumstance can be utilized the acting of decompressor turbine to greatest extent. This system is utilized LNG cold energy, exhaust steam in steam turbine and boiler exhaust gas waste heat, the liquid LNG that vaporizes promotes expansion turbine acting and directly drives the blower fan on boiler, not only realize the abundant comprehensive utilization of LNG cold energy, exhaust steam in steam turbine and boiler exhaust gas waste heat, also save a large amount of electric energy, thereby the operation cost of saving boats and ships, has good economy and the feature of environmental protection.
Brief description of the drawings
A kind of LNG cargo ship cold energy that Fig. 1 provides for the utility model and the modular structure schematic diagram of used heat utilization system.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described, to better understand the utility model.
Advance in view of the LNG cargo ship of 70% left and right in the current whole world adopts Steam Power Equipment to promote boats and ships, the boats and ships of class power set are that utility model design object is described further according to this.
What as shown in Figure 1, the utility model embodiment provided be applicable to a kind of LNG cargo ship cold energy and used heat utilization system comprises high-pressure pump P, First Heat Exchanger H1, the second heat exchanger H2, the 3rd heat exchanger H3, the first acting unit that expands, acting unit and second that expands. First Heat Exchanger H1 and the second heat exchanger H2 are connected in turn on the outlet line of high-pressure pump P, and the first expansion acting unit and the second expansion acting unit are connected on the outlet line of the second heat exchanger H2 side by side; Described the first expansion acting unit comprises the first expansion turbine E1, first stud gear case G1, first clutch C1, the first blower fan A1, second clutch C2, the second blower fan A2, the first frequency converter F1, the first threephase asynchronous machine M1, the second threephase asynchronous machine M2, the 3rd blower fan A3, and the first blower fan A1, the second blower fan A2, the 3rd blower fan A3 are connected on first clutch C1, second clutch C2, the second threephase asynchronous machine M2; First clutch C1 and second clutch C2 are arranged on first stud gear case G1 output, and the first expansion turbine E1 and the first threephase asynchronous machine M1 are arranged on first stud gear case G1 input; The second described expansion acting unit comprises the second expansion turbine E2, second stud gear case G2, the 3rd clutch C3, four fan device A4, four clutches C4, tendencies machine A5, the second frequency converter F2, the 3rd threephase asynchronous machine M3, the 4th threephase asynchronous machine M4, the 6th blower fan A6; Four fan device A4, tendencies machine A5, the 6th blower fan A6 are connected on the 3rd clutch C3, four clutches C4, the 4th threephase asynchronous machine M4; The 3rd clutch C3 and four clutches C4 are arranged on the output of second stud gear case G2, and the second expansion turbine E2 and the 3rd threephase asynchronous machine M3 are arranged on the input of second stud gear case G2; The first expansion turbine E1, the second expansion turbine E2 are all connected between the second heat exchanger H2 and the 3rd heat exchanger H3. First Heat Exchanger H1 outlet is connected with condenser. First clutch C1, second clutch C2 are separately positioned between the first blower fan A1, the second blower fan A2 and first stud gear case G1. The 3rd clutch C3, four clutches C4 are separately positioned between four fan device A4, tendencies machine A5 and second stud gear case G2.
The first expansion turbine E1 and the first threephase asynchronous machine M1 provide power for first stud gear case G1; The second expansion turbine E2 and the 3rd threephase asynchronous machine M3 provide power for second stud gear case G2.
The first blower fan A1, the second blower fan A2, the fan sheet corner of the 3rd blower fan A3 can regulate, thereby change air output, as the first blower fan A1, when the fan sheet corner of the second blower fan A2 changes, the first blower fan A1, the second blower fan A2 load can change, in the time that load increases, the output shaft rotating speed of first stud gear case G1 declines, the first frequency converter F1 is by the value of feedback comparison of set-point and feedback signal, thereby change frequency and control the first threephase asynchronous machine M1 loading, improve rotating speed with this, meet the requirements of rotating speed (1780rpm), in the time that load reduces, the control of the first frequency converter F1 is contrary, meet the requirements of equally rotating speed.
Four fan device A4, tendencies machine A5, the fan sheet corner of the 6th blower fan A6 can regulate, thereby change air output, as four fan device A4, when the fan sheet corner of tendencies machine A5 changes, four fan device A4, tendencies machine A5 load can change, in the time that load increases, the output shaft rotating speed of second stud gear case G2 declines, the second frequency converter F2 is by the value of feedback comparison of set-point and feedback signal, thereby change frequency and control the 3rd threephase asynchronous machine M3 loading, improve rotating speed with this, meet the requirements of rotating speed (1780rpm), in the time that load reduces, the control of the second frequency converter F2 is contrary, meet the requirements of equally rotating speed.
In described LNG cargo ship cold energy and used heat utilization system, the liquid LNG that comes from boats and ships cargo tank is pressurized to 30MPa left and right by high-pressure pump P, enter First Heat Exchanger H1, in First Heat Exchanger H1, the LNG (temperature of LNG is-163 DEG C) of cryogenic high pressure carries out heat exchange again with the exhaust steam in steam turbine of the 3rd heat exchanger H3 heat exchange, makes cryogenic high pressure LNG become the natural gas of gaseous state.
In described LNG cargo ship cold energy and used heat utilization system, from First Heat Exchanger H1 gaseous natural gas out among the second heat exchanger H2 with the smoke discharging residual heat of boiler (when normal duty, 160 DEG C of exhaust gas temperatures) heat exchange in the second heat exchanger, become the natural gas (temperature is greatly about 130 DEG C of-150 DEG C of left and right) of high temperature.
In described a kind of LNG cargo ship cold energy and used heat utilization system, enter respectively the first expansion turbine E1, the second expansion turbine E2 acting from the natural gas (temperature is greatly about 130 DEG C of-150 DEG C of left and right) of the second heat exchanger H2 high temperature out, and drive the first blower fan A1, the second blower fan A2 of two output same rotational speed and four fan device A4, the tendencies machine A5 of two output same rotational speed of second stud gear case G2 driving by first stud gear case G1 respectively.
In the first described expansion acting unit, between the first blower fan A1, the second blower fan A2 and first stud gear case G1, be respectively equipped with first clutch C1, second clutch C2, when any one blower fan damage therein, can depart from first stud gear case G1 to ensure its maintenance, not affect other fan operation.
In the first described expansion acting unit, the first frequency converter F1 can change frequency by the speed feedback signal of the first blower fan A1 and the second blower fan A2 respectively and control the first threephase asynchronous machine M1, to meet the constant rotational speed demand of the first blower fan A1 and the second blower fan A2. Cannot meet the workload demand of the first blower fan A1 and the second blower fan A2 when the first expansion turbine E1 does work, the first frequency converter F1 carrys out the load needs of full the first blower fan A1 and the second blower fan A2 by changing the load of the first threephase asynchronous machine M1. Under special circumstances, when the first blower fan A1 or the second blower fan A2 are because fault is when first clutch C1 or second clutch C2 throw off respectively, the first expansion turbine E1 is likely greater than the load of the first blower fan A1 or the second blower fan A2, now the first threephase asynchronous machine M1 is negative torque, thereby become generator to the power supply of network of ship feedback, ensure in any case, can make full use of the mechanical power of the first expansion turbine E1.
In the second described expansion acting unit, between four fan device A4, tendencies machine A5 and second stud gear case G2, be respectively equipped with the 3rd clutch C3, four clutches C4, when any one blower fan damage therein, can depart from second stud gear case G2 to ensure its maintenance, not affect other fan operation.
In the second described expansion acting unit, the second frequency converter F2 can change frequency by the speed feedback signal of four fan device A4 and tendencies machine A5 respectively and control the 3rd threephase asynchronous machine M3, to meet the constant rotational speed demand of four fan device A4 and tendencies machine A5. Cannot meet the workload demand of four fan device A4 and tendencies machine A5 when the second expansion turbine E2 does work, the second frequency converter F2 carrys out the load needs of full four fan device A4 and tendencies machine A5 by changing the load of the second threephase asynchronous machine M2. Under special circumstances, when four fan device A4 or tendencies machine A5 are because fault is when the 3rd clutch C3 or four clutches C4 throw off respectively, the second expansion turbine E2 is likely greater than the load of four fan device A4 or tendencies machine A5, now the 3rd threephase asynchronous machine M3 is negative torque, thereby become generator to the power supply of network of ship feedback, ensure in any case, can make full use of the mechanical power of the second expansion turbine E2.
In described a kind of LNG cargo ship cold energy and used heat utilization system, expand from the first expansion acting unit, second gaseous natural gas (pressure of natural gas is 0.1MPa) of the low-temp low-pressure that acting unit transports respectively among the 3rd heat exchanger H3 with exhaust steam in steam turbine heat exchange, enter temperature before boiler at least in the requirement of 25 DEG C of left and right to meet.
The above is preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications are also considered as protection domain of the present utility model.
Claims (4)
1. LNG cargo ship cold energy and a used heat utilization system, is characterized in that: comprise that high-pressure pump, first changesHot device, the second heat exchanger, the 3rd heat exchanger, the first expansion acting unit, the second expansion acting unit, First Heat ExchangerBe connected in turn on the outlet line of high-pressure pump with the second heat exchanger, acting unit expands in the first expansion acting unit and secondBe connected to side by side on the outlet line of the second heat exchanger; The described first acting unit that expands comprises the first expansion turbine, theOne change gear box, first clutch, the first blower fan, second clutch, the second blower fan, the first frequency converter, the or threePhase Induction Machines, the second threephase asynchronous machine, the 3rd blower fan, the first blower fan, the second blower fan, the 3rd blower fan connect respectivelyOn first clutch, second clutch, the second threephase asynchronous machine; First clutch and second clutch are arranged onThe output of one change gear box, the first expansion turbine and the first threephase asynchronous machine are arranged on first stud gear caseInput; Described second expand acting unit comprise the second expansion turbine, second stud gear case, the 3rd clutch,Four fan device, four clutches, tendencies machine, the second frequency converter, the 3rd threephase asynchronous machine, the 4th phase asynchronous electricityMachine, the 6th blower fan; Four fan device, tendencies machine, the 6th blower fan be connected to the 3rd clutch, four clutches,On the 4th threephase asynchronous machine; The 3rd clutch and four clutches are arranged on the output of second stud gear case, secondExpansion turbine and the 3rd threephase asynchronous machine are arranged on the input of second stud gear case; The first expansion turbine,Two expansion turbine are all connected between the second heat exchanger and the 3rd heat exchanger.
2. LNG cargo ship cold energy according to claim 1 and used heat utilization system, is characterized in that: instituteState First Heat Exchanger outlet and be connected with condenser.
3. LNG cargo ship cold energy according to claim 1 and used heat utilization system, is characterized in that: instituteState first clutch, second clutch is separately positioned between the first blower fan, the second blower fan and first stud gear case.
4. LNG cargo ship cold energy according to claim 1 and used heat utilization system, is characterized in that: instituteState the 3rd clutch, four clutches is separately positioned between four fan device, tendencies machine and second stud gear case.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520890466.3U CN205243564U (en) | 2015-11-10 | 2015-11-10 | LNG transport ship cold energy and used heat comprehensive utilization system |
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| CN201520890466.3U CN205243564U (en) | 2015-11-10 | 2015-11-10 | LNG transport ship cold energy and used heat comprehensive utilization system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631140A (en) * | 2018-11-28 | 2019-04-16 | 中国船舶重工集团公司第七〇九研究所 | Ocean nuclear power platform cabin heating system |
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2015
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109631140A (en) * | 2018-11-28 | 2019-04-16 | 中国船舶重工集团公司第七〇九研究所 | Ocean nuclear power platform cabin heating system |
| CN109631140B (en) * | 2018-11-28 | 2020-09-08 | 中国船舶重工集团公司第七一九研究所 | Cabin heating system of marine nuclear power platform |
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| CF01 | Termination of patent right due to non-payment of annual fee |