CN102353040A - Ultra-high pressure combustion device - Google Patents
Ultra-high pressure combustion device Download PDFInfo
- Publication number
- CN102353040A CN102353040A CN2011102259040A CN201110225904A CN102353040A CN 102353040 A CN102353040 A CN 102353040A CN 2011102259040 A CN2011102259040 A CN 2011102259040A CN 201110225904 A CN201110225904 A CN 201110225904A CN 102353040 A CN102353040 A CN 102353040A
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- Prior art keywords
- combustion chamber
- shell
- air
- nozzle
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 84
- 125000006850 spacer group Chemical group 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 39
- 239000006200 vaporizer Substances 0.000 claims description 30
- 238000000889 atomisation Methods 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 11
- 238000001816 cooling Methods 0.000 claims description 10
- 230000000694 effects Effects 0.000 abstract description 3
- 238000000605 extraction Methods 0.000 abstract description 2
- 230000002093 peripheral effect Effects 0.000 abstract 3
- 238000009834 vaporization Methods 0.000 abstract 3
- 230000008016 vaporization Effects 0.000 abstract 3
- 238000002955 isolation Methods 0.000 abstract 1
- 238000010298 pulverizing process Methods 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 20
- 238000002156 mixing Methods 0.000 description 8
- 102000010637 Aquaporins Human genes 0.000 description 4
- 108010063290 Aquaporins Proteins 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 239000000498 cooling water Substances 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 4
- 239000003546 flue gas Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 239000002283 diesel fuel Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 2
- 239000000295 fuel oil Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- BGOFCVIGEYGEOF-UJPOAAIJSA-N helicin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@H]1OC1=CC=CC=C1C=O BGOFCVIGEYGEOF-UJPOAAIJSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
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- Spray-Type Burners (AREA)
Abstract
The invention relates to an ultra-high pressure combustion device, belonging to the technical field of oil extraction devices. The combustion device comprises a combustion chamber head part, a combustion chamber shell (12) and a vaporization chamber shell (20), wherein the shell of the head part (1) is inserted into and connected with the front end of the combustion chamber shell (12); the vaporization chamber shell (20) is connected to the rear end of the combustion chamber shell (12); the inner peripheral wall of the combustion chamber shell (12) is provided with a combustion chamber inner lining II (10); the inner peripheral wall of the combustion chamber inner lining II (10) is provided with a combustion chamber inner lining I (8); the inner peripheral wall at the front section of the combustion chamber inner lining I (8) is provided with a combustion chamber isolation sleeve (7); a lens gasket II (14) is embedded in the middle of the connection end of the combustion chamber shell (12) and the vaporization chamber shell (20) for sealing; the lens gasket II (14) is provided with an air connection nozzle (22) which is communicated with an air spacer bush (11); and the air spacer bush (11) is communicated with a combustion chamber (29). The combustion device provided by the invention is reasonable in design, and is safe and reliable, has the advantages of long service life and good pulverization effect, and is more energy-saving and efficient.
Description
Technical field
The present invention relates to a kind of super-pressure burner, belong to the oil production equipment technical field.
Background technology
Injecting saturated vapor to oil reservoir, to carry out heavy oil heat production be one of method of generally adopting of countries in the world, obtained good oil recovery effect and economic benefit.
Original heating exploitation is that the high temperature and high pressure steam that the ground boiler is produced is injected the down-hole oil reservoir mostly; But there are many deficiencies in this thermal recovery mode; Big such as heat loss; Equipment and production cost are high; Oil extraction efficient is low; Environmental pollution is big, and particularly the poor mobility of complete equipment is difficult to adapt to the requirement of oil well distribution operation.In order to overcome above-mentioned deficiency; Application number is the high-temperature high-pressure combustion system that 200510022594.7 Chinese patent discloses a kind of sub-critical composite heat carrier generator; This patent is compared with above-mentioned thermal recovery boiler; No matter technically; Still all obtained very much progress at aspects such as efficient, cost, energy-conservation, mobility; But also there is following deficiency in this system: 1, maximum combustion pressure can only reach 20MPa, can not be adapted to ultradeep well and hyposmosis well (injection pressure is higher than 20MPa); 2, the bump depended merely on air of fuel oil atomizes, and combustion efficiency is relatively poor; 3, because the periphery wall of combustion chamber liner directly contacts with cooling water,, influence efficiency of combustion so the wall surface temperature of combustion chamber is lower; 4, cooling water directly is injected to the combustion chamber, and burning is had certain interference, influences efficiency of combustion; 5, the burning chamber shell wall surface temperature is higher, and heat loss is big.
Summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide that a kind of combustion pressure is higher, rational in infrastructure, safe and reliable, long service life, and more efficient, energy-conservation super-pressure burner.
The objective of the invention is to realize like this: a kind of super-pressure burner; It comprises head of combustion chamber; Burning chamber shell and vaporizer housing; Said head of combustion chamber comprises spark plug; Oil burner nozzle; Water connects mouth and cyclone; Said head shell is plugged in the burning chamber shell front end; The vaporizer housing is connected in the burning chamber shell rear end; Said combustion chamber shell intracoelomic cavity is the combustion chamber; Vaporizer housing inner chamber is a vaporizer; It is characterized in that: said burning chamber shell internal perisporium is provided with combustion chamber liner II; Form air casing between the periphery wall of combustion chamber liner II and the burning chamber shell internal perisporium; Said combustion chamber liner II internal perisporium is provided with combustion chamber liner I; Form the water spacer between said combustion chamber liner I periphery wall and the combustion chamber liner II internal perisporium; Said combustion chamber liner I leading portion internal perisporium is provided with the combustion chamber collet; Set German-style metal lensring II sealing in the middle of said burning chamber shell and the vaporizer housing link; Said German-style metal lensring II is provided with air and connects mouth; Said air connects mouth and is connected with air casing, and said air casing is connected with the combustion chamber;
Offer many air ducts on the said head shell back segment shell wall; Said air duct is connected with air casing; Also be provided with many cooling air holes and cyclone hole on the shell wall of the head shell that air duct is other; Said cooling air hole head end is connected with air duct; End is connected with precombustion chamber; Said cyclone hole head end is connected with air duct, and end is connected with the whirlwind groove of cyclone;
Said oil burner nozzle center is provided with the nozzle interior conduit; The oil burner nozzle front end evenly offers a plurality of nozzle atomizations hole; Said a plurality of nozzle atomizations hole is connected with the nozzle interior conduit; Offer ring-shaped groove on the said oil burner nozzle outer edge surface; Said air duct is connected with ring-shaped groove, offers atomizing wind hole between said ring-shaped groove and the nozzle atomization hole.
Said German-style metal lensring II is provided with temperature sensor, and said temperature sensor is connected with the water spacer, is fitted with flame detector on the shell wall of said head shell, and said flame detector is connected with precombustion chamber.
Said spark plug, oil burner nozzle, water connect all to adopt between mouth and flame detector and the head shell and are threaded the mode of gasket seal.
Compared with prior art, the invention has the beneficial effects as follows:
1, pressure-air of the present invention enters into the combustion chamber through air casing, can preheated air, reduce the combustion chamber shell temperature, and reduce heat loss, improve the thermal efficiency, simultaneously, because after air was heated, burn rate was accelerated, and can improve efficiency of combustion;
2, oil burner nozzle of the present invention adopts twice atomizing; Earlier with the diesel oil mechanical atomization; Diesel oil after the mechanical atomization and pressure-air clash into atomizing again; Droplet diameter after the atomizing diminishes; Improved atomizing effect; And owing to adopted atomization style twice, all oily spray orifices also are difficult for stopping up, and help improving efficiency of combustion;
3, the leading portion internal face has increased little, the high-intensity combustion chamber of thermal conductivity factor collet in the combustion chamber in the present invention; Eliminated washing away of flue gas and combustion chamber liner I effectively; The resistance to pressure and the service life of equipment have been improved; And improved chamber temperature; Make burning more abundant, improved efficiency of combustion;
4, the present invention has designed flame detector at head of combustion chamber, and flame detector can detect the combustion case in the combustion chamber during equipment operation, has improved the security of equipment.
Description of drawings
Fig. 1 is the structural representation of a kind of super-pressure burner of the present invention.
Fig. 2 is the left view of Fig. 1.
Fig. 3 is the A-A cutaway view of Fig. 2.
Fig. 4 is the I portion enlarged drawing of Fig. 3.
Fig. 5 is the B-B cutaway view of Fig. 3.
Wherein:
Head shell 1
Spark plug 2
Water connects mouth 4
German-style metal lensring I5
Cyclone 6
Combustion chamber liner I8
Combustion chamber liner II10
(operating) water nozzle 13
German-style metal lensring II14
(operating) water nozzle 17
Vaporizer blender 18
Mixing nozzle 19
Vaporizer housing 20
Air connects mouth 22
Cyclone hole 25
Flame detector 27
Precombustion chamber 28
Combustion chamber 29
Vaporizer 30
Connecting flange 31
Whirlwind groove 34
Nozzle interior conduit 36
Atomizing wind hole 37
Ring-shaped groove 38.
The specific embodiment
Referring to Fig. 1 ~ Fig. 3, a kind of super-pressure burner of the present invention mainly is made up of head of combustion chamber, burning chamber shell 12 and vaporizer housing 20.Said burning chamber shell 12 inner chambers are combustion chamber 29, and vaporizer housing 20 inner chambers are vaporizer 30.Said head of combustion chamber is plugged in burning chamber shell 12 front ends, and vaporizer housing 20 is connected in burning chamber shell 12 rear ends.Set German-style metal lensring I5 sealing in the middle of said head of combustion chamber and burning chamber shell 12 links, said head of combustion chamber and burning chamber shell 12 link periphery walls are provided with connecting flange 31, connect with studs 32 and nut 33 axial restraints.Said burning chamber shell 12 seals with the middle German-style metal lensring II14 that sets of vaporizer housing 20 links, also is provided with connecting flange 31 on burning chamber shell 12 and the vaporizer housing 20 link periphery walls, connects with studs 32 and nut 33 axial restraints.Said burning chamber shell 12 internal perisporiums are provided with combustion chamber liner II10; Form air casing 11 between the periphery wall of combustion chamber liner II10 and burning chamber shell 12 internal perisporiums; Said combustion chamber liner II10 internal perisporium is provided with combustion chamber liner I8; Form water spacer 9 between said combustion chamber liner I8 periphery wall and the combustion chamber liner II10 internal perisporium; Said combustion chamber liner I8 leading portion internal perisporium is provided with combustion chamber collet 7; Said combustion chamber liner I8 back segment internal perisporium is provided with (operating) water nozzle 13, and said (operating) water nozzle 13 is connected with water spacer 9.
Said head of combustion chamber comprises head shell 1; Spark plug 2; Oil burner nozzle 3; Water connects mouth 4; Cyclone 6 and flame detector 27; Said spark plug 2; Oil burner nozzle 3; Water connects mouth 4 and is plugged on the shell wall of head shell 1 with flame detector 27; Said spark plug 2; Oil burner nozzle 3; Water connects all to adopt between mouth 4 and flame detector 27 and the head shell 1 and is threaded; The mode of gasket seal; Said cyclone 6 is rotatably connected in head shell 1 rear end; Cyclone 6 periphery wall upper edges are circumferentially with spiral whirlwind groove 34; Cyclone 6 inner chambers and head shell 1 form a precombustion chamber 28; Said water connects mouth 4 and is connected with water spacer 9, said spark plug 2; Oil burner nozzle 3 is connected with precombustion chamber 28 with flame detector 27.
Be provided with vaporizer blender 18 in the said vaporizer housing 20; Said vaporizer blender 18 is fixedly connected on special-purpose convex lens pad 14 rear ends; Offer annular groove on said vaporizer blender 18 rear end faces; Said annular groove and water leg 35 of special-purpose convex lens pad 14 airtight formation; Offer (operating) water nozzle 17 on the said vaporizer blender 18 back segment internal perisporiums; Said (operating) water nozzle 17 is connected with water leg 35; Offer mixing nozzle 19 on the vaporizer blender 18 leading portion internal perisporiums, said mixing nozzle 19 is connected with vaporizer 30.
Referring to Fig. 4; Offer many air ducts 26 on the said head shell 1 back segment shell wall; Said air duct 26 is connected with air casing 11; Also be provided with many cooling air holes 24 and cyclone hole 25 on the shell wall of the head shell 1 on air duct 26 sides; Said cooling air hole 24 head ends are connected with air duct 26; End is connected with precombustion chamber 28, and said cyclone hole 25 head ends are connected with air duct 26, and end is connected with whirlwind groove 34.
Referring to Fig. 4; Said oil burner nozzle 3 centers are provided with nozzle interior conduit 36; Oil burner nozzle 3 front ends evenly offer a plurality of nozzle atomizations hole 23; Said nozzle atomization hole 23 is connected with nozzle interior conduit 36; Offer ring-shaped groove 38 on said oil burner nozzle 3 outer edge surfaces; Said air duct 26 is connected with ring-shaped groove 38, offers atomizing wind hole 37 between said ring-shaped groove 38 and the nozzle atomization hole 23.
Referring to Fig. 5, said German-style metal lensring II14 is provided with temperature sensor 21, air connects mouth 22 and overflow valve 15, and said temperature sensor 21 is connected with water spacer 9 with overflow valve 15, and said air connects mouth 22 and is connected with air casing 11.Said overflow valve 15 bottoms offer mixing chamber aquaporin 16, and said mixing chamber aquaporin 16 is connected with the water leg 35 of vaporizer blender 18.
During present embodiment work; Pressure-air connects mouth 22 by air and enters into air casing 11; And be assigned to atomizing wind hole 37, cooling air hole 24 and cyclone hole 25 by air duct 26; The part air enter into through atomizing wind hole 37 nozzle atomization hole 23 with diesel oil atomization, mix; Advance to precombustion chamber 28 then; 2 pairs of gas mixtures of spark plug are lighted a fire, and make the gas mixture burning.Most of air gets into cyclones 6 by cyclone hole 25 and flows along the whirlwind groove on cyclone 6 periphery walls 34, get into combustion chamber and precombustion chamber burning rich oil combustion gas collision, mix, afterburning, fully burn.The part air is by 24 ejections of cooling air hole; Make root flame and head shell 1 keep certain distance; The protection head shell can not burnt out; Water under high pressure connects mouth 4 by water and enters into and forms spiral helicine cooling-water duct in the described water spacer 9, and cooling water is that spirality is moved towards water spacer 9 in, the water advanced person entry spacer that is used to atomize; Flow along the hand of spiral; Combustion chamber liner I8 is implemented the regeneration cooling, and feed-water preheating is convenient in vaporizer, vaporize simultaneously.Water under high pressure is mixed with high-temperature flue gas by 13 ejections of the (operating) water nozzle on the liner I8 back segment internal perisporium of combustion chamber; When the (operating) water nozzle 13 of combustion chamber liner I8 stops up; Hydraulic pressure rises and backs down the aquaporin that overflow valve 15 flows to vaporizer blender 18; And mixes with high-temperature flue gas by (operating) water nozzle 17 ejection, water mixes with high-temperature flue gas afterwards by spraying to vaporizer 30 after the even once more mixing of mixing nozzle 19.
Claims (3)
1. super-pressure burner; It comprises head of combustion chamber, burning chamber shell (12) and vaporizer housing (20); Said head of combustion chamber comprises that spark plug (2), oil burner nozzle (3), water connect mouth (4) and cyclone (6); Said head shell (1) is plugged in burning chamber shell (12) front end; Vaporizer housing (20) is connected in burning chamber shell (12) rear end; Said burning chamber shell (12) inner chamber is combustion chamber (29); Vaporizer housing (20) inner chamber is vaporizer (30); It is characterized in that: said burning chamber shell (12) internal perisporium is provided with combustion chamber liner II(10); Combustion chamber liner II(10) forms air casing (11) between periphery wall and burning chamber shell (12) internal perisporium; Said combustion chamber liner II(10) internal perisporium is provided with combustion chamber liner I(8); Said combustion chamber liner I(8) periphery wall and combustion chamber liner II(10) form water spacer (9) between the internal perisporium; Said combustion chamber liner I(8) the leading portion internal perisporium is provided with combustion chamber collet (7); Said burning chamber shell (12) and the middle German-style metal lensring II(14 that sets of vaporizer housing (20) link) sealing; Said German-style metal lensring II(14) is provided with air and connects mouth (22); Said air connects mouth (22) and is connected with air casing (11), and said air casing (11) is connected with combustion chamber (29);
Offer many air ducts (26) on said head shell (1) the back segment shell wall; Said air duct (26) is connected with air casing (11); Also be provided with many cooling air holes (24) and cyclone hole (25) on the shell wall of the head shell (1) that air duct (26) is other; Said cooling air hole (24) head end is connected with air duct (26); End is connected with precombustion chamber (28); Said cyclone hole (25) head end is connected with air duct (26), and end is connected with the whirlwind groove (34) of cyclone (6);
Said oil burner nozzle (3) center is provided with nozzle interior conduit (36); Oil burner nozzle (3) front end evenly offers a plurality of nozzle atomizations hole (23); Said a plurality of nozzle atomizations holes (23) are connected with nozzle interior conduit (36); Offer ring-shaped groove (38) on said oil burner nozzle (3) outer edge surface; Said air duct (26) is connected with ring-shaped groove (38), offers atomizing wind hole (37) between said ring-shaped groove (38) and nozzle atomization hole (23).
2. a kind of super-pressure burner according to claim 1; It is characterized in that: said German-style metal lensring II (14) is provided with temperature sensor (21); Said temperature sensor (21) is connected with water spacer (9); Be fitted with flame detector (27) on the shell wall of said head shell (1), said flame detector (27) is connected with precombustion chamber (28).
3. a kind of super-pressure burner according to claim 1 and 2; It is characterized in that: said spark plug (2), oil burner nozzle (3), water connect all to adopt between mouth (4) and flame detector (27) and the head shell (1) and are threaded the mode of gasket seal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110225904 CN102353040B (en) | 2011-08-09 | 2011-08-09 | Ultra-high pressure combustion device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110225904 CN102353040B (en) | 2011-08-09 | 2011-08-09 | Ultra-high pressure combustion device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102353040A true CN102353040A (en) | 2012-02-15 |
| CN102353040B CN102353040B (en) | 2013-03-27 |
Family
ID=45576663
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110225904 Expired - Fee Related CN102353040B (en) | 2011-08-09 | 2011-08-09 | Ultra-high pressure combustion device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102353040B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918117A (en) * | 2018-07-02 | 2018-11-30 | 武汉三江航天远方科技有限公司 | Heavy oil burner jet combustion performance testing device and its test method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4385661A (en) * | 1981-01-07 | 1983-05-31 | The United States Of America As Represented By The United States Department Of Energy | Downhole steam generator with improved preheating, combustion and protection features |
| EP0367240A1 (en) * | 1988-10-31 | 1990-05-09 | Advanced Drilling Technologies Pty Ltd (A.C.N. 011 003 759) | Adaptor for drilling strings with a controllable air passage |
| CN1285457A (en) * | 1999-08-23 | 2001-02-28 | 付玉峰 | Gas and vapour generator |
| CN2573673Y (en) * | 2002-09-13 | 2003-09-17 | 吴锦标 | Evaporator device for production of viscous crude |
| CN1804366A (en) * | 2005-12-23 | 2006-07-19 | 江苏大江石油科技有限公司 | High-temperature high-pressure combustion system of sub-critical composite heat carrier generator |
| CN201053311Y (en) * | 2007-06-08 | 2008-04-30 | 杨文俊 | High-pressure high-temperature steam, nitrogen and carbon dioxide generator |
| CN202203934U (en) * | 2011-08-09 | 2012-04-25 | 江苏大江石油科技有限公司 | Ultrahigh pressure combustion device |
-
2011
- 2011-08-09 CN CN 201110225904 patent/CN102353040B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4385661A (en) * | 1981-01-07 | 1983-05-31 | The United States Of America As Represented By The United States Department Of Energy | Downhole steam generator with improved preheating, combustion and protection features |
| EP0367240A1 (en) * | 1988-10-31 | 1990-05-09 | Advanced Drilling Technologies Pty Ltd (A.C.N. 011 003 759) | Adaptor for drilling strings with a controllable air passage |
| CN1285457A (en) * | 1999-08-23 | 2001-02-28 | 付玉峰 | Gas and vapour generator |
| CN2573673Y (en) * | 2002-09-13 | 2003-09-17 | 吴锦标 | Evaporator device for production of viscous crude |
| CN1804366A (en) * | 2005-12-23 | 2006-07-19 | 江苏大江石油科技有限公司 | High-temperature high-pressure combustion system of sub-critical composite heat carrier generator |
| CN201053311Y (en) * | 2007-06-08 | 2008-04-30 | 杨文俊 | High-pressure high-temperature steam, nitrogen and carbon dioxide generator |
| CN202203934U (en) * | 2011-08-09 | 2012-04-25 | 江苏大江石油科技有限公司 | Ultrahigh pressure combustion device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108918117A (en) * | 2018-07-02 | 2018-11-30 | 武汉三江航天远方科技有限公司 | Heavy oil burner jet combustion performance testing device and its test method |
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| Publication number | Publication date |
|---|---|
| CN102353040B (en) | 2013-03-27 |
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