CN103438747B - A kind of seawater distributor using method for open-frame type gasifier - Google Patents
A kind of seawater distributor using method for open-frame type gasifier Download PDFInfo
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- CN103438747B CN103438747B CN201310349658.9A CN201310349658A CN103438747B CN 103438747 B CN103438747 B CN 103438747B CN 201310349658 A CN201310349658 A CN 201310349658A CN 103438747 B CN103438747 B CN 103438747B
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Abstract
A kind of seawater distributor for open-frame type gasifier and using method, the template tube bundle top configuration seawater distributor of open-frame type gasifier, seawater distributor is containing oral siphon (1), seawater groove (2), first-level buffer cover (4), level 2 buffering cover (5), three grades of impact-absorbing shells (6), buffer board (7), distribute plate (8), overflow plate (10), rectangle outlet pass (11), deflector (13), by overflow plate and distribution plate, seawater groove is divided into buffering area (3), distribute district (9), overflow area (12), buffering area and overflow area not UNICOM can effectively avoid buffering area maritime interior waters produce vortex phenomenon or occur larger fluctuation, thus the seawater in guarantee overflow area is in stable state, such utilization distributes the seawater drop in district and overflow area and makes seawater even under deflector arc-shaped guides, naturally overflow to the template tube bundle top surface of open-frame type gasifier and form stable seawater liquid film.
Description
Technical field
The invention belongs to open-frame type gasifier technical field of auxiliary equipment, especially a kind of seawater distributor for open-frame type gasifier and using method.
Background technology
Along with the development of economic society and the progress of science and technology, world energy sources consumption structure constantly develops to low carbonization, natural gas is high-quality, efficient, the clean energy, in world's energy consumption structure, the proportion of natural gas Natural Gas brings up to rapidly current 24% from 10% of nineteen fifty, becomes the large energy in third place in the world.
Because gaseous natural gas Liquefied Natural Gas is its volume-diminished of-162 DEG C of post liquefaction about 620 times, therefore for reducing costs, usually only for storing and transport, gaseous natural gas is transported to gaseous natural gas receiving station, finally by gasifier, gaseous natural gas is gasified to gas at normal temperature.
The gasifier of open-frame type gasifier to be a kind of with seawater be thermal source, connect to form tabular by some heat-transfer pipes to arrange, upper and lower two ends respectively with discharge, collector tube welding formation template tube bank, restrained by several templates again and jointly form tube bank gasifier, seawater distributor is set up at the top of tube bank gasifier, on the outer surface that seawater spraying is restrained at template by seawater distributor, the effect of gravity is relied on to flow from top to bottom, gaseous natural gas is entered in each heat-transfer pipe by collector tube and also upwards flows, absorb the heat of seawater in the process and gasify, finally be pooled to outside after in discharge and be passed to terminal.
The Main Function of seawater distributor be make seawater template tube bank surface formed film-form and even along template tube bank decline, the inequality otherwise the gaseous natural gas in heat-transfer pipe is heated, gaseous natural gas will be caused not to be fully vaporized prior, and between gaseous natural gas and seawater, there is the larger temperature difference, easily make seawater restrain surperficial nodule at template to freeze, the structure of heat-transfer pipe is damaged.
The problems such as existing seawater vaporizer ubiquity structure is simple, use operation inconvenience, service life is short, to liquid distribution and spray effect uneven.
Chinese patent CN 202166352 U discloses a kind of seawater distributor of open-frame type gasifier, and this seawater distributor mainly exists following problem:
(1) this seawater distributor adopts the version that rectangle impact-absorbing shell and circular impact-absorbing shell combine, and its structure is comparatively complicated, and manufacture difficulty is large, in use easily damages, and due to impact-absorbing shell be that overall structure makes maintenance comparatively difficulty;
(2) impact-absorbing shell region seawater directly can enter overflow area, this brings the eddy current of impact-absorbing shell region seawater and fluctuation into overflow area with regard to easy, make the overflow area water surface steady not, cause seawater distributor spraying effect uneven, especially when seawater flow is larger, this phenomenon is particularly evident.
Summary of the invention
For solving the problem, the invention provides a kind of seawater distributor for open-frame type gasifier and using method, seawater can be made to flow at the template tube bank surface uniform of open-frame type gasifier and form stable seawater liquid film by this seawater distributor and use.
In order to realize foregoing invention object, the present invention adopts following technical scheme:
A kind of seawater distributor for open-frame type gasifier and using method, the template tube bundle top configuration seawater distributor of open-frame type gasifier, seawater distributor is containing oral siphon, seawater groove, impact-absorbing shell, buffer board, distribution plate, overflow plate and deflector, and feature of the present invention is as follows:
In seawater distributor, two length sides of seawater groove upper end are formed two deflectors of arc-shaped respectively to outer flanging, in the groove of seawater groove, length direction configures two overflowing stream plates, two overflowing stream plates are plugged in the unidirectional recessed slot of seawater groove bottom and two sides configuration respectively, the height of overflow plate is greater than the height of deflector, on the medial surface of two overflowing stream plates, difference balanced configuration two is to T-shaped slot, distribution plate is plugged with respectively in T-shaped slot often pair described, the height of the height >=deflector of two distribution plates, overflow area symmetrical before and after making two overflowing stream plates like this and forming two between corresponding deflector, and two overflowing stream plates form two symmetrical distribution districts and intermediate buffer by two distribution plates, several rectangle outlet pass is all configured with bottom the overflow plate distributing district, several rectangle outlet pass equal UNICOMs overflow area, outside the seawater trench bottom being in buffering area, center has been connected and fixed oral siphon, inside the seawater trench bottom being in buffering area, center has been connected and fixed inverted U-shape first-level buffer cover, be connected and fixed in the upper end of first-level buffer cover inverted U-shape level 2 buffering cover from top to bottom successively, inverted U-shape three grades of impact-absorbing shells and buffer board, level 2 buffering cover, three grades of impact-absorbing shells and buffer board are all connected and fixed between two overflowing stream plates, the height that is connected and fixed of buffer board matches with the height distributing plate, be arranged with one-level side-by-side horizontal delivery port respectively in the left and right sides of first-level buffer cover and hit exactly and be vertically provided with one-level circle water hole, be arranged with secondary side-by-side horizontal delivery port respectively in the left and right sides of level 2 buffering cover and hit exactly and be vertically provided with secondary circle water hole, be arranged with three grades of side-by-side horizontal delivery ports in the left and right sides of three grades of impact-absorbing shells respectively and hit exactly and be vertically provided with three grades of round water holes, described one-level side-by-side horizontal delivery port and described secondary side-by-side horizontal delivery port form one-level difference in height, described secondary side-by-side horizontal delivery port and described three grades of side-by-side horizontal delivery ports form secondary difference in height, described three grades of side-by-side horizontal delivery ports and buffer board bottom surface form three grades of differences in height,
During use, seawater is introduced in first-level buffer cover by oral siphon, part seawater flows into another part seawater in buffering area by described one-level side-by-side horizontal delivery port and enters in level 2 buffering cover by described one-level circle water hole, the a part of seawater entered in level 2 buffering cover flows into another part seawater in buffering area by described secondary side-by-side horizontal delivery port and enters in three grades of impact-absorbing shells by described secondary circle water hole, the a part of seawater entered in three grades of impact-absorbing shells flows in buffering area by described three grades of side-by-side horizontal delivery ports, after impact-absorbing shell three level shunt, only have a small amount of seawater to enter buffer board bottom surface by described three grades of round water holes and along buffer board bottom surface to the left and right both sides level flow in buffering area, flow into when the seawater in buffering area exceedes and distributes plate height and distribute district, the seawater distributed in district enters in overflow area by several rectangle outlet pass, the height regulating and distributing plate can avoid the seawater distributed in district to occur large eddy current and fluctuation, thus can ensure that the seawater in overflow area is in stable state, such utilization distributes the seawater drop in district and overflow area and makes seawater even under deflector arc-shaped guides, naturally overflow to the top surface of open-frame type gasifier, and form stable seawater liquid film.
The described one-level circle internal diameter in water hole mates with the internal diameter of oral siphon.
The internal diameter in described secondary circle water hole is 70 ~ 85% of described one-level circle water hole internal diameter.
The internal diameter in described three grades of round water holes is 70 ~ 85% of described secondary circle water hole internal diameter.
Described one-level difference in height equals 10 ~ 15% of oral siphon internal diameter.
Described secondary difference in height equals 10 ~ 15% of described secondary circle water hole internal diameter.
Described three grades of differences in height equal 80 ~ 90% of described three grades of round water hole internal diameters.
Owing to adopting technical scheme described above, the present invention produces following good effect:
1, seawater groove is divided into buffering area, distribution district and overflow area by overflow plate and distribution plate by the present invention, buffering area and overflow area not the UNICOM's vortex phenomenon that can effectively avoid buffering area maritime interior waters to produce or when there is larger fluctuation on impacts such as the water surface poor stabilities that overflow area is caused, make seawater in overflow area more steady, for the stability of seawater liquid film and uniformity provide maximum possible.
2, the present invention carries out three level shunts by impact-absorbing shell to seawater, and three grades of round water hole internal diameters of impact-absorbing shell are different, and structure is simply novel, and buffering effect is ideal, manufactures, keeps in repair easily.
Accompanying drawing explanation
Fig. 1 is the broken section structural representation sketch of seawater distributor.
Fig. 2 is the diagrammatic top view of Fig. 1.
Fig. 3 is the A-A diagrammatic cross-sectional view of Fig. 1.
In above-mentioned figure: 1-oral siphon; 2-seawater groove; 3-buffering area; 4-first-level buffer cover; 5-level 2 buffering cover; 6-tri-grades of impact-absorbing shells; 7-buffer board; 8-distributes plate; 9-seawater distributes district; 10-overflow plate; 11-seawater rectangle port; 12-overflow area; 13-deflector.
Detailed description of the invention
The present invention is a kind of seawater distributor for open-frame type gasifier and using method, the template tube bundle top configuration seawater distributor of open-frame type gasifier, seawater distributor can make seawater flow at the template tube bank surface uniform of open-frame type gasifier and form stable seawater liquid film.
Seawater distributor of the present invention is containing oral siphon, seawater groove, impact-absorbing shell, buffer board, distribution plate, overflow plate and deflector.
Composition graphs 1-3, in seawater distributor, two length sides of seawater groove 2 upper end are formed two deflectors 13 of arc-shaped respectively to outer flanging, in the groove of seawater groove 2, length direction configures two overflowing stream plates 10, two overflowing stream plates 10 are plugged in the unidirectional recessed slot of seawater groove 2 bottom surface and two sides configuration respectively, and the height of overflow plate 10 is greater than the height of deflector 13.
On the medial surface of two overflowing stream plates 10, difference balanced configuration two is to T-shaped slot, be plugged with respectively in T-shaped slot often pair described and distribute plate 8, the height of the height >=deflector 13 of two distribution plates 8, overflow area 12 symmetrical before and after making two overflowing stream plates 10 like this and forming two between corresponding deflector 13, and two overflowing stream plates 10 form two symmetrical distribution districts 9 and intermediate buffer 3 by two distribution plates 8.
Above-mentioned when referring to that seawater groove 2 is longer every overflowing stream plate 10 be jointly made up of plate in the middle of about two pieces plates and a piece, wherein two blocks of described left and right plates mate with distribution district 9 length and one block of described middle plate mates with buffering area 3 length, and it is an overall overflow plate 10 that two blocks of described left and right plates connect with one block of described middle plate respectively by described T-shaped slot.When seawater groove 2 is shorter, every overflowing stream plate 10 is a monoblock, and on the medial surface of two overflowing stream plates 10, balanced configuration two both can distinguish grafting distribution plate 8 to described unidirectional recessed slot respectively.
By overflow plate 10 and distribution plate 8, seawater groove 2 is divided into buffering area 3, distribution district 9 and overflow area 12, on impacts such as the water surface poor stabilities that overflow area 12 is caused when UNICOM can effectively not avoid buffering area 3 maritime interior waters may produce vortex phenomenon or occur larger fluctuation mutually buffering area 3 and overflow area 12, make seawater in overflow area 12 more steady, for the stability of seawater liquid film and uniformity provide maximum possible.
Several rectangle outlet pass 11 is all configured with in the bottom distributing district 9, several rectangle outlet pass 11 is UNICOM overflow area 12 all, each rectangle outlet pass 11 is all joined and is drilled with several water seepage hole, described several water seepage hole makes two seawater distributed in district 9 flow into overflow area 12 by rectangle outlet pass 11.
Seawater groove 2 bottom outside being in buffering area 3 hits exactly the oral siphon 1 that has been connected and fixed, seawater groove 2 bottom inside being in buffering area hits exactly the inverted U-shape first-level buffer cover 4 that has been connected and fixed, be connected and fixed in the upper end of first-level buffer cover 4 inverted U-shape level 2 buffering cover 5, inverted U-shape three grades of impact-absorbing shells 6 and buffer board 7 from top to bottom successively, level 2 buffering cover 5, three grades of impact-absorbing shells 6 and buffer board 7 are all connected and fixed between two overflowing stream plates 10, and the height that is connected and fixed of buffer board 7 matches with the height distributing plate 8.
Be arranged with one-level side-by-side horizontal delivery port respectively in the left and right sides of first-level buffer cover 4 and hit exactly and be vertically provided with one-level circle water hole, the internal diameter in described one-level circle water hole mates with the internal diameter of oral siphon 1.
Be arranged with secondary side-by-side horizontal delivery port respectively in the left and right sides of level 2 buffering cover 5 and hit exactly and be vertically provided with secondary circle water hole, the internal diameter in described secondary circle water hole is 70 ~ 85% of described one-level circle water hole internal diameter.
Be arranged with three grades of side-by-side horizontal delivery ports in the left and right sides of three grades of impact-absorbing shells 6 respectively and hit exactly and be vertically provided with three grades of round water holes, the internal diameter in described three grades of round water holes is 70 ~ 85% of described secondary circle water hole internal diameter.
Described one-level side-by-side horizontal delivery port and described secondary side-by-side horizontal delivery port form one-level difference in height, and described one-level difference in height equals 10 ~ 15% of oral siphon 1 internal diameter.
Described secondary side-by-side horizontal delivery port and described three grades of side-by-side horizontal delivery ports form secondary difference in height, and described secondary difference in height equals 10 ~ 15% of described secondary circle water hole internal diameter.
Described three grades of side-by-side horizontal delivery ports and buffer board bottom surface form three grades of differences in height, and described three grades of differences in height equal 80 ~ 90% of described three grades of round water hole internal diameters.
After every grade of difference in height is determined, being connected and fixed of buffer board 7 is highly also just determined, thus distributes the height of plate 8 and also just to be determined and fine-tuning in its altitude range, also determine the height of deflector 13 simultaneously.
After every grade of difference in height is determined, the bore position of described one-level side-by-side horizontal delivery port, described secondary side-by-side horizontal delivery port, described three grades of side-by-side horizontal delivery ports is also just determined, such as the bore position of described one-level side-by-side horizontal delivery port is in the top of first-level buffer cover 4, leave except slight clearance except between first-level buffer cover 4 and level 2 buffering cover 5, the bore position of level 2 buffering cover 5 can be determined according to described one-level difference in height, and in like manner the bore position of three grades of impact-absorbing shells 6 can be determined according to described secondary difference in height.
During use, seawater is introduced in first-level buffer cover 4 by oral siphon 1, part seawater flows into another part seawater in buffering area 3 by described one-level side-by-side horizontal delivery port and enters in level 2 buffering cover 5 by described one-level circle water hole, the a part of seawater entered in level 2 buffering cover 2 flows into another part seawater in buffering area 3 by described secondary side-by-side horizontal delivery port and enters in three grades of impact-absorbing shells 6 by described secondary circle water hole, the a part of seawater entered in three grades of impact-absorbing shells 6 flows in buffering area 3 by described three grades of side-by-side horizontal delivery ports, after impact-absorbing shell three level shunt, only have a small amount of seawater to enter buffer board 7 bottom surface by described three grades of round water holes and along buffer board bottom surface to the left and right both sides level flow in buffering area 3, flow into when the seawater in buffering area 3 exceedes and distributes plate 8 height and distribute district 9, the seawater distributed in district 9 enters in overflow area 12 by several rectangle outlet pass 11, the height regulating and distributing plate 8 can avoid the seawater distributed in district 9 to occur large eddy current and fluctuation, thus can ensure that the seawater in overflow area 12 is in stable state, such utilization distributes the seawater drop in district 9 and overflow area 12 and makes seawater even under deflector 13 arc-shaped guides, naturally overflow to the template tube bundle top surface of open-frame type gasifier, and form stable seawater liquid film.
The present invention carries out three level shunts by impact-absorbing shell to seawater, three grades of round water hole internal diameters of impact-absorbing shell are different, structure is simply novel, buffering effect is ideal, manufacture, keep in repair easily, disclose that foregoing of the present invention is current to be thought to be suitable for, but will be appreciated that: the present invention is intended to comprise all and belongs to all changes in this design and invention scope of design and improvement.
Claims (7)
1. the seawater distributor using method for open-frame type gasifier, the template tube bundle top configuration seawater distributor of open-frame type gasifier, seawater distributor, containing oral siphon (1), seawater groove (2), impact-absorbing shell, buffer board (7), distribution plate (8), overflow plate (10) and deflector, is characterized in that:
In seawater distributor, two length sides of seawater groove (2) upper end are formed two deflectors (13) of arc-shaped respectively to outer flanging, in the groove of seawater groove (2), length direction configures two overflowing stream plates (10), two overflowing stream plates (10) are plugged in the unidirectional recessed slot of seawater groove (2) bottom surface and two sides configuration respectively, the height of overflow plate (10) is greater than the height of deflector (13), on the medial surface of two overflowing stream plates (10), difference balanced configuration two is to T-shaped slot, be plugged with respectively in T-shaped slot often pair described and distribute plate (8), the height of the height >=deflector (13) of two distribution plate (8), overflow area (12) symmetrical before and after making two overflowing stream plates (10) like this and forming two between corresponding deflector (13), and two overflowing stream plates (10) distribute plate (8) formation two symmetrical distribution districts (9) and intermediate buffer (3) by two, several rectangle outlet pass (11) is all configured with bottom the overflow plate distributing district (9), several rectangle outlet pass (11) is UNICOM overflow area (12) all, seawater groove (2) bottom outside being in buffering area (3) hits exactly the oral siphon (1) that has been connected and fixed, seawater groove (2) bottom inside being in buffering area (3) hits exactly the inverted U-shape first-level buffer cover (4) that has been connected and fixed, be connected and fixed in the upper end of first-level buffer cover (4) inverted U-shape level 2 buffering cover (5) from top to bottom successively, inverted U-shape three grades of impact-absorbing shells (6) and buffer board (7), level 2 buffering cover (5), three grades of impact-absorbing shells (6) and buffer board (7) are all connected and fixed between two overflowing stream plates (10), the height that is connected and fixed of buffer board (7) matches with the height distributing plate (8), be arranged with one-level side-by-side horizontal delivery port respectively in the left and right sides of first-level buffer cover (4) and hit exactly and be vertically provided with one-level circle water hole, be arranged with secondary side-by-side horizontal delivery port respectively in the left and right sides of level 2 buffering cover (5) and hit exactly and be vertically provided with secondary circle water hole, be arranged with three grades of side-by-side horizontal delivery ports respectively in the left and right sides of three grades of impact-absorbing shells (6) and hit exactly and be vertically provided with three grades of round water holes, described one-level side-by-side horizontal delivery port and described secondary side-by-side horizontal delivery port form one-level difference in height, described secondary side-by-side horizontal delivery port and described three grades of side-by-side horizontal delivery ports form secondary difference in height, described three grades of side-by-side horizontal delivery ports and buffer board bottom surface form three grades of differences in height,
During use, seawater is introduced in first-level buffer cover (4) by oral siphon (1), part seawater flows into another part seawater in buffering area (3) by described one-level side-by-side horizontal delivery port and enters in level 2 buffering cover by described one-level circle water hole, the a part of seawater entered in level 2 buffering cover flows into another part seawater in buffering area (3) by described secondary side-by-side horizontal delivery port and enters in three grades of impact-absorbing shells by described secondary circle water hole, the a part of seawater entered in three grades of impact-absorbing shells flows in buffering area (3) by described three grades of side-by-side horizontal delivery ports, after impact-absorbing shell three level shunt, only have a small amount of seawater to enter buffer board (7) bottom surface by described three grades of round water holes and along buffer board (7) bottom surface to the left and right both sides level flow in buffering area (3), flow into when the seawater in buffering area (3) exceedes and distributes plate (8) height and distribute district (9), the seawater distributed in district (9) enters in overflow area (12) by several rectangle outlet pass (11), the height regulating and distributing plate (8) can avoid the seawater distributed in district (9) to occur large eddy current and fluctuation, thus can ensure that the seawater in overflow area (12) is in stable state, such utilization distributes the seawater drop in district (9) and overflow area (12) and makes seawater even under deflector (13) arc-shaped guides, naturally overflow to the top surface of open-frame type gasifier, and form stable seawater liquid film.
2. a kind of seawater distributor using method for open-frame type gasifier according to claim 1, is characterized in that: the internal diameter in described one-level circle water hole mates with the internal diameter of oral siphon (1).
3. a kind of seawater distributor using method for open-frame type gasifier according to claim 1, is characterized in that: the internal diameter in described secondary circle water hole is 70 ~ 85% of described one-level circle water hole internal diameter.
4. a kind of seawater distributor using method for open-frame type gasifier according to claim 1, is characterized in that: the internal diameter in described three grades of round water holes is 70 ~ 85% of described secondary circle water hole internal diameter.
5. a kind of seawater distributor using method for open-frame type gasifier according to claim 1, is characterized in that: described one-level difference in height equals 10 ~ 15% of oral siphon (1) internal diameter.
6. a kind of seawater distributor using method for open-frame type gasifier according to claim 1, is characterized in that: described secondary difference in height equals 10 ~ 15% of described secondary circle water hole internal diameter.
7. a kind of seawater distributor using method for open-frame type gasifier according to claim 1, is characterized in that: described three grades of differences in height equal 80 ~ 90% of described three grades of round water hole internal diameters.
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| JP6769715B2 (en) * | 2016-02-26 | 2020-10-14 | 株式会社神戸製鋼所 | Sprinkler |
| CN106225550B (en) * | 2016-07-22 | 2018-10-30 | 甘肃蓝科石化高新装备股份有限公司 | A kind of open-frame type gasifier seawater distribution system |
| CN107120990A (en) * | 2017-05-09 | 2017-09-01 | 中国船舶重工集团公司第七二五研究所 | A kind of seawater distributor of open-frame type gasifier |
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| JP2011169494A (en) * | 2010-02-17 | 2011-09-01 | Sumitomo Precision Prod Co Ltd | Open rack-type vaporizer |
| CN202082608U (en) * | 2011-06-20 | 2011-12-21 | 中国寰球工程公司 | Vaporizer system and control system of LNG (Liquefied Natural Gas) |
| CN202166352U (en) * | 2011-11-23 | 2012-03-14 | 海工英派尔工程有限公司 | Seawater distribution device for open-frame type vaporizer |
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| US20070095077A1 (en) * | 2005-11-01 | 2007-05-03 | Chevron U.S.A. Inc. | LNG by-pass for open rack vaporizer during LNG regasification |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011169494A (en) * | 2010-02-17 | 2011-09-01 | Sumitomo Precision Prod Co Ltd | Open rack-type vaporizer |
| CN202082608U (en) * | 2011-06-20 | 2011-12-21 | 中国寰球工程公司 | Vaporizer system and control system of LNG (Liquefied Natural Gas) |
| CN202166352U (en) * | 2011-11-23 | 2012-03-14 | 海工英派尔工程有限公司 | Seawater distribution device for open-frame type vaporizer |
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Inventor after: Yu Weixin Inventor after: Li Cheng Inventor after: Qiu Shengwen Inventor after: Li Peiyue Inventor after: Li Shikai Inventor after: Hu Weimin Inventor after: Huo Wang Inventor after: Yan Feihao Inventor after: Wei Liuke Inventor after: Fu Hao Inventor after: Zhao Yuefeng Inventor before: Yu Weixin Inventor before: Li Shikai Inventor before: Li Peiyue Inventor before: Hu Weimin |
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Effective date of registration: 20160620 Address after: 471000 Henan Province, Luoyang city Luolong District Binhe Road No. 169 Patentee after: No.725 Inst. China Shipping Heavy Industry Group Corp. Patentee after: China Huanqiu Engineering Co. Address before: 471023 Henan Province, Luoyang city Luolong District Binhe Road No. 169 Patentee before: No.725 Inst. China Shipping Heavy Industry Group Corp. |
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| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 471000 Henan Province, Luoyang city Luolong District Binhe Road No. 169 Patentee after: No.725 Inst., China Ship Heavy Industry Group Corp. Patentee after: China Global Engineering Co. Ltd. Address before: 471000 Henan Province, Luoyang city Luolong District Binhe Road No. 169 Patentee before: No.725 Inst., China Ship Heavy Industry Group Corp. Patentee before: China Huanqiu Engineering Co. |