CN109682065B - Combined type rapid high-pressure gas heating device - Google Patents
Combined type rapid high-pressure gas heating device Download PDFInfo
- Publication number
- CN109682065B CN109682065B CN201811538838.0A CN201811538838A CN109682065B CN 109682065 B CN109682065 B CN 109682065B CN 201811538838 A CN201811538838 A CN 201811538838A CN 109682065 B CN109682065 B CN 109682065B
- Authority
- CN
- China
- Prior art keywords
- ceramic
- connecting piece
- side cover
- heating
- transition
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H3/00—Air heaters
- F24H3/02—Air heaters with forced circulation
- F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
- F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/18—Arrangement or mounting of grates or heating means
- F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
- F24H9/1863—Arrangement or mounting of electric heating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
- F24H9/00—Details
- F24H9/20—Arrangement or mounting of control or safety devices
- F24H9/2064—Arrangement or mounting of control or safety devices for air heaters
- F24H9/2071—Arrangement or mounting of control or safety devices for air heaters using electrical energy supply
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/02—Details or accessories of testing apparatus
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
- G01M15/04—Testing internal-combustion engines
- G01M15/05—Testing internal-combustion engines by combined monitoring of two or more different engine parameters
Abstract
A combined type rapid high-pressure gas heating device belongs to the technical field of internal combustion engine spray combustion visual experiment devices. The device comprises an inlet side cover, a heater round sleeve and an outlet side cover, wherein an air inlet hole is formed in the center of the inlet side cover, the outlet side cover is provided with an air outlet hole in the center of the outlet side cover, the inlet side cover and the outlet side cover are fixedly connected to two ends of the heater round sleeve, and a first transition ceramic connecting piece, a honeycomb ceramic heating wire heating assembly, a second transition ceramic connecting piece, a carbon silicon rod high-temperature alloy combined heating assembly and a third transition ceramic connecting piece are sequentially embedded in the heater round sleeve. The device can realize the rapid heating of high-pressure gas, the pressure of the outlet gas can reach 15MPa, the temperature can reach 1400K, the outlet flow rate can reach 80m/s, and the heating time of the gas in the heater is less than 1 s.
Description
Technical Field
The invention relates to a combined type rapid high-pressure gas heating device, in particular to a device for heating high-pressure gas led into a constant-volume combustion bomb, and belongs to the technical field of internal combustion engine spray combustion visual experiment devices.
Background
The constant volume combustion bomb is a closed pressure container widely used at home and abroad for internal combustion engine spraying and combustion tests at present, and mainly has the function of establishing a pressure and temperature environment for simulating the pressure and temperature states of a real internal combustion engine.
The fuel injector is generally arranged at the top of the constant-volume combustion bomb, and an optical test method is adopted to shoot through a window on the side face of the constant-volume combustion bomb so as to research the spraying and combustion processes in the constant-volume combustion bomb. Therefore, other interference lights in the constant volume bomb, such as high temperature radiation light of a heater in the constant volume bomb, etc. should be avoided as much as possible.
Because the temperature of the simulated internal combustion engine is generally higher than the external environment temperature, especially the environment temperature required in the spray combustion process of the diesel engine exceeds 800K, the high-pressure gas in the constant-volume combustion bomb needs to be heated. At present, the common method is to arrange an electric heating wire in a constant volume combustion bomb, and the method has the defect that the luminescence of the heating wire can influence the optical test; in addition, the method also has the defects of long heating time, small temperature range, easy breakage of the heating wire and the like. The method also comprises the steps of introducing combustible gas into the constant-volume combustion bomb, igniting and combusting, and then heating and boosting the temperature in the constant-volume combustion bomb; however, this method requires strict disposal of the combustible gas, and is poor in safety, and the products after combustion are liable to interfere with the subsequent optical tests.
Disclosure of Invention
The invention aims to overcome the defects and provide a combined type rapid high-pressure gas heating device for rapidly heating gas led into a constant-volume combustion bomb, which can rapidly heat high-pressure gas, wherein the pressure of the outlet gas can reach 15MPa, the temperature can reach 1400K, the outlet flow rate can reach 80m/s, and the heating time of the gas in a heater is less than 1 s.
The technical scheme adopted by the invention is as follows: a combined type rapid high-pressure gas heating device comprises an inlet side cover, a heater round sleeve and an outlet side cover, wherein an air inlet hole is formed in the center of the inlet side cover, the outlet side cover is provided with an air outlet hole in the center of the outlet side cover, the inlet side cover and the outlet side cover are fixedly connected to two ends of the heater round sleeve, and a first transition ceramic connecting piece, a honeycomb ceramic heating wire heating component, a second transition ceramic connecting piece, a carbon silicon rod high-temperature alloy combined heating component and a third transition ceramic connecting piece are sequentially embedded in the heater round sleeve; the first transition ceramic connecting piece, the second transition ceramic connecting piece and the third transition ceramic connecting piece are disc-shaped structural parts with vent holes in the centers; the 4 temperature sensors are respectively connected with the front end and the rear end of the honeycomb ceramic electric heating wire heating component and the carbon silicon rod high-temperature alloy combined heating component through holes on the heater round sleeve; the electrode is connected with a honeycomb ceramic heating wire heating component and a carbon silicon rod high-temperature alloy combined heating component through a hole on a heater round sleeve.
The honeycomb ceramic heating wire heating assembly comprises a first cylindrical ceramic structural part and a honeycomb ceramic heating wire heating core embedded in the first cylindrical ceramic structural part, a spiral heating wire penetrates through a honeycomb ceramic hole of the honeycomb ceramic heating wire heating core, the spiral heating wire is inserted in the honeycomb ceramic in an S-shaped reciprocating mode, and the spiral heating wire is connected with a power supply through an electrode.
The carbon-silicon-rod superalloy combined heating component comprises a second cylindrical ceramic structural part and a carbon-silicon-rod superalloy combined heating core embedded in the second cylindrical ceramic structural part, the carbon-silicon-rod superalloy combined heating core is of a radial flow type, a silicon carbon rod in the carbon-silicon-rod superalloy combined heating core is inserted on a nickel-based alloy disc, a plurality of nickel-based alloy discs are in one group, the head and the tail of each group of nickel-based alloy discs are second nickel-based alloy discs and are opposite in installation direction, discs in the middle portion are first nickel-based alloy discs to control the gas flow direction, the contact portion of the silicon carbon rod and the nickel-based alloy discs is supported by a ceramic snap ring, and the silicon carbon rod is connected with an electrode through a silicon carbon rod clip through a circuit.
The vent holes in the centers of the first transition ceramic connecting piece, the second transition ceramic connecting piece and the third transition ceramic connecting piece are conical.
The invention has the beneficial effects that: the combined type rapid high-pressure gas heating device comprises an inlet side cover, a heater round sleeve and an outlet side cover, wherein an air inlet hole is formed in the center of the inlet side cover, the outlet side cover is provided with an air outlet hole in the center of the outlet side cover, the inlet side cover and the outlet side cover are fixedly connected to two ends of the heater round sleeve, and a first transition ceramic connecting piece, a honeycomb ceramic heating wire heating component, a second transition ceramic connecting piece, a carbon silicon rod high-temperature alloy combined heating component and a third transition ceramic connecting piece are sequentially embedded in the heater round sleeve; the first transition ceramic connecting piece, the second transition ceramic connecting piece and the third transition ceramic connecting piece are disc-shaped structural parts with vent holes in the centers; the 4 temperature sensors are respectively connected with the front end and the rear end of the honeycomb ceramic electric heating wire heating component and the carbon silicon rod high-temperature alloy combined heating component through holes on the heater round sleeve; the electrode is connected with a honeycomb ceramic heating wire heating component and a carbon silicon rod high-temperature alloy combined heating component through a hole on a heater round sleeve. The device can realize the rapid heating of high-pressure gas, the pressure of the outlet gas can reach 15MPa, the temperature can reach 1400K, the outlet flow rate can reach 80m/s, and the heating time of the gas in the heater is less than 1 s.
Drawings
The invention is further illustrated by the following examples in conjunction with the accompanying drawings
Fig. 1 is a schematic structural diagram of a combined type rapid high-pressure gas heating device.
Fig. 2 is a sectional view a-a in fig. 1.
Fig. 3 is a sectional view B-B of fig. 1.
FIG. 4 is a schematic view of a first nickel-based alloy disk.
FIG. 5 is a schematic view of a second nickel-based alloy disk.
In the figure: 1. the high-temperature-resistant heater comprises an inlet side cover, a 2a, a first transition ceramic connector, a 2b, a second transition ceramic connector, a 2c, a third transition ceramic connector, a 3, a honeycomb ceramic heating wire heating core, a 4, a heater round sleeve, a 5, a temperature sensor, a 6a, a first cylindrical ceramic structural part, a 6b, a second cylindrical ceramic structural part, a 7, a carbon silicon rod high-temperature alloy combined heating core, a 8, an outlet side cover, a 9, a nickel-based alloy disc, a 9a, a first nickel-based alloy disc, a 9b, a second nickel-based alloy disc, a 10, a silicon carbon rod, a 11, an electrode, a 12, a ceramic clamping ring, a 13 and a silicon carbon rod clamp.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings.
Fig. 1, 2 and 3 show a schematic structural diagram of a combined type rapid high-pressure gas heating device. This kind of modular quick high-pressure gas heating device is equipped with the inlet side cap 1, the heater circle cover 4 and the center of inlet port including the center and is equipped with the outlet side cap 8 of venthole, inlet side cap 1 and outlet side cap 8 fixed connection in the both ends of heater circle cover 4, its characterized in that: a first transition ceramic connecting piece 2a, a honeycomb ceramic electric heating wire heating component, a second transition ceramic connecting piece 2b, a carbon silicon rod high-temperature alloy combined heating component and a third transition ceramic connecting piece 2c are sequentially embedded in the heater round sleeve 4; the first transition ceramic connecting piece 2a, the second transition ceramic connecting piece 2b and the third transition ceramic connecting piece 2c are disc-shaped structural parts with vent holes in the centers; the 4 temperature sensors 5 are respectively connected to the front end and the rear end of the honeycomb ceramic electric heating wire heating component and the carbon silicon rod high-temperature alloy combined heating component through holes on the heater round sleeve 4; the electrode 11 passes through a hole on the heater round sleeve 4 to be connected with the honeycomb ceramic heating wire heating component and the carbon silicon rod high-temperature alloy combined heating component.
The honeycomb ceramic electric heating wire heating assembly comprises a first cylindrical ceramic structural part 6a and a honeycomb ceramic electric heating wire heating core 3 embedded in the first cylindrical ceramic structural part 6a, wherein a spiral electric heating wire penetrates through a honeycomb ceramic hole of the honeycomb ceramic electric heating wire heating core 3, the spiral electric heating wire is inserted in the honeycomb ceramic in an S-shaped reciprocating manner, and the spiral electric heating wire is connected with a power supply through an electrode 11; the carbon silicon rod superalloy combined heating component comprises a second cylindrical ceramic structural part 6b and a carbon silicon rod superalloy combined heating core 7 embedded in the second cylindrical ceramic structural part 6b, the carbon silicon rod superalloy combined heating core 7 is of a radial flow type, a silicon carbon rod 10 in the carbon silicon rod superalloy combined heating core 7 is inserted into nickel-based alloy discs 9, a plurality of nickel-based alloy discs 9 form a group, the head and the tail of each group of nickel-based alloy discs 9 adopt second nickel-based alloy discs 9b and are opposite in installation direction, discs in the middle portion adopt first nickel-based alloy discs 9a to control the gas flow direction, the contact portion of the silicon carbon rod 10 and the nickel-based alloy discs 9 is supported by a ceramic snap ring 12, and the silicon carbon rod 10 is connected with an electrode 11 through a silicon carbon rod clamp 13 through a circuit.
Fig. 4 and 5 are schematic structural views of the first nickel-based alloy disk 9a and the second nickel-based alloy disk 9 b.
The vent holes in the centers of the first transition ceramic connector 2a, the second transition ceramic connector 2b and the third transition ceramic connector 2c are tapered.
By adopting the technical scheme, the gas which leads to the constant volume combustion bomb, such as air, nitrogen and the like, can be externally and quickly heated, the honeycomb ceramic electric heating wire heating core 3 is embedded in the first cylindrical ceramic structural part 6a, the first transition ceramic connecting part 2a is padded between the front end of the honeycomb ceramic electric heating wire heating core 3 and the inlet side cover 1, the second transition ceramic connecting part 2b is padded between the front end of the carbon silicon rod high-temperature alloy combined heating core 7 and the honeycomb ceramic electric heating wire heating core 3, the carbon silicon rod high-temperature alloy combined heating core 7 is coated by the second cylindrical ceramic structural part 6b, and the third transition ceramic connecting part 2c is padded between the rear end of the carbon silicon rod high-temperature alloy combined heating core 7 and the outlet side cover heater 8. Wherein, the conical vent hole at the center of the transition ceramic connecting piece plays a role in guiding gas.
After being assembled by the method, the heater is embedded in the heater round sleeve 4, and the two ends of the heater round sleeve 4 are fixedly connected with the inlet side cover 1 and the outlet side cover 8.
When the honeycomb ceramic heating wire is in specific work, firstly, the electrodes are connected, high-pressure gas firstly enters the honeycomb ceramic heating wire heating core 3 to be heated in a primary mode through the hole in the pipeline routing inlet side cover 1, the honeycomb ceramic heating wire heating core 3 is in an axial flow mode, a spiral heating wire penetrates through the honeycomb ceramic hole, and the spiral heating wire is arranged inside the honeycomb ceramic in an S-shaped reciprocating mode. Then, the heated gas is continuously led to the carbon silicon rod high-temperature alloy combined heating core 7 through the conical second transition ceramic connecting piece 2b to be heated secondarily, the carbon silicon rod high-temperature alloy combined heating core 7 is internally in a sectional heating mode and is in a radial flow mode, the gas flows up and down in a reciprocating mode among the plurality of nickel-based alloy discs 9 and finally flows to the outlet of the heater, and the heated gas is led into the pipeline through the hole in the outlet heater side cover 8 so as to enter the constant-volume combustion bomb.
The ceramic structural members are all made of polycrystal, can work in a high-temperature environment of 1600 ℃, play a good role in heat insulation, can obviously improve the thermal efficiency of equipment and save energy; the silicon carbide rod 10 is supported by the nickel-based alloy disc 9, so that the structure is more stable, and meanwhile, the nickel-based alloy disc 9 plays a role in increasing the heat exchange surface; the inlet side cover 1, the outlet side cover 8 and the heater round sleeve 4 are made of high-strength steel, so that the mechanical property and the service life of the components are improved; the four temperature sensors 5 are respectively connected to the front end and the rear end of the honeycomb ceramic electric heating wire heating component and the carbon silicon rod high-temperature alloy combined heating component through holes in the heater round sleeve 4, and can monitor the temperature of each part. According to the invention, the number of the silicon-carbon rods 10 and the number of the nickel-based alloy discs 9 in the carbon-silicon rod superalloy combined heating core 7 can be adjusted according to experimental requirements.
Claims (2)
1. A combined type rapid high-pressure gas heating device comprises an inlet side cover (1) with an air inlet hole in the center, a heater circular sleeve (4) and an outlet side cover (8) with an air outlet hole in the center, wherein the inlet side cover (1) and the outlet side cover (8) are fixedly connected to two ends of the heater circular sleeve (4), and a first transition ceramic connecting piece (2 a), a honeycomb ceramic heating wire heating assembly, a second transition ceramic connecting piece (2 b), a carbon silicon rod high-temperature alloy combined heating assembly and a third transition ceramic connecting piece (2 c) are sequentially embedded in the heater circular sleeve (4); the first transition ceramic connecting piece (2 a), the second transition ceramic connecting piece (2 b) and the third transition ceramic connecting piece (2 c) are disc-shaped structural parts with vent holes in the centers; the 4 temperature sensors (5) are respectively connected to the front end and the rear end of the honeycomb ceramic electric heating wire heating component and the carbon silicon rod high-temperature alloy combined heating component through holes on the heater round sleeve (4); the electrode (11) passes through a hole on the heater round sleeve (4) and is connected with the honeycomb ceramic electric heating wire heating component and the carbon silicon rod high-temperature alloy combined heating component; the method is characterized in that: the honeycomb ceramic electric heating wire heating assembly comprises a first cylindrical ceramic structural part (6 a) and a honeycomb ceramic electric heating wire heating core (3) embedded in the first cylindrical ceramic structural part (6 a), wherein a spiral electric heating wire penetrates through a honeycomb ceramic hole of the honeycomb ceramic electric heating wire heating core (3), the spiral electric heating wire is inserted in the honeycomb ceramic in an S-shaped reciprocating manner, and the spiral electric heating wire is connected with a power supply through an electrode (11); the carbon silicon rod high-temperature alloy combined heating component comprises a second cylindrical ceramic structural part (6 b) and a carbon silicon rod high-temperature alloy combined heating core (7) embedded in the second cylindrical ceramic structural part (6 b), the carbon-silicon-rod superalloy combined heating core (7) is of a radial flow type, silicon-carbon rods (10) in the carbon-silicon-rod superalloy combined heating core (7) are inserted into nickel-based alloy discs (9), a plurality of nickel-based alloy discs (9) form a group, the head and the tail of each group of nickel-based alloy discs (9) adopt second nickel-based alloy discs (9 b) with opposite installation directions, discs in the middle part adopt first nickel-based alloy discs (9 a), the contact part of the silicon carbide rod (10) and the nickel-based alloy disc (9) is supported by a ceramic snap ring (12) so as to control the gas flow direction, and the silicon carbide rod (10) is connected with an electrode (11) by a silicon carbide rod clamp (13) through a circuit.
2. A combined rapid high pressure gas heating apparatus according to claim 1, wherein: the vent holes in the centers of the first transition ceramic connecting piece (2 a), the second transition ceramic connecting piece (2 b) and the third transition ceramic connecting piece (2 c) are conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538838.0A CN109682065B (en) | 2018-12-17 | 2018-12-17 | Combined type rapid high-pressure gas heating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811538838.0A CN109682065B (en) | 2018-12-17 | 2018-12-17 | Combined type rapid high-pressure gas heating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109682065A CN109682065A (en) | 2019-04-26 |
| CN109682065B true CN109682065B (en) | 2020-08-14 |
Family
ID=66187844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811538838.0A Expired - Fee Related CN109682065B (en) | 2018-12-17 | 2018-12-17 | Combined type rapid high-pressure gas heating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109682065B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115155674A (en) * | 2022-06-24 | 2022-10-11 | 广东启亚检测设备股份有限公司 | Ozone reducer and ozone test chamber |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106908247A (en) * | 2017-03-20 | 2017-06-30 | 武汉理工大学 | Constant volume combustion bomb heater and temperature control method |
| CN206515272U (en) * | 2016-11-09 | 2017-09-22 | 吉林大学 | Thermograde controlled burning bullet |
| CN208222829U (en) * | 2018-05-04 | 2018-12-11 | 辽宁华燃燃气设备有限公司 | A kind of highly effective directly-heated LNG reheating system |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20130008423A1 (en) * | 2006-12-12 | 2013-01-10 | Enerco Group, Inc. | Forced air heater including on-board source of electric energy |
| CN104748371A (en) * | 2015-03-23 | 2015-07-01 | 西北工业大学 | Resistive heater used for engine combustion chamber experiment system |
| TWI602042B (en) * | 2016-03-25 | 2017-10-11 | 智易科技股份有限公司 | Temperature controller, electronic device having the same and conttrol method thereof |
-
2018
- 2018-12-17 CN CN201811538838.0A patent/CN109682065B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN206515272U (en) * | 2016-11-09 | 2017-09-22 | 吉林大学 | Thermograde controlled burning bullet |
| CN106908247A (en) * | 2017-03-20 | 2017-06-30 | 武汉理工大学 | Constant volume combustion bomb heater and temperature control method |
| CN208222829U (en) * | 2018-05-04 | 2018-12-11 | 辽宁华燃燃气设备有限公司 | A kind of highly effective directly-heated LNG reheating system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109682065A (en) | 2019-04-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103529078B (en) | Drop evaporation ignition experiment device and using method thereof under a kind of high temperature and high pressure environment | |
| CN105332822B (en) | A kind of multifunctional assembled burner | |
| CN109164204B (en) | Multi-functional constant volume burner of multiple spot ignition | |
| CN109682065B (en) | Combined type rapid high-pressure gas heating device | |
| CN101033725B (en) | Multipoint ignition engine | |
| CN108151062B (en) | A kind of engine supersonic speed combustion chamber based on embedded central plasma torch | |
| CN106930838B (en) | A kind of aero-engine ignition device and ignition method using aviation kerosine | |
| CN207035116U (en) | A kind of combustion tube, burner and oven for being applied to barbecue | |
| CN106884706A (en) | Water-jacket typ pre-burning device | |
| CN109723554A (en) | A kind of central distribution plasma pyrolysis activation recharging oil device and method | |
| CN105972564B (en) | Quartz lamp air cooling device | |
| CN212252610U (en) | FID hydrogen burner | |
| CN209145739U (en) | A kind of EGR valve of improved bivalve cored structure | |
| CN202532478U (en) | Kiln alcohol group fuel combustion machine | |
| CN203489269U (en) | Mutation transition fuel gas pulse combustion heater of premixer | |
| CN202757123U (en) | Multiple-ring diffusion disk of group-jet afterburning gas burner | |
| CN203215972U (en) | Movable air heater | |
| CN202452489U (en) | Pulse type porous medium burner | |
| CN2864480Y (en) | Horizontal superconductive liquid crude oil heating device | |
| CN205237887U (en) | A frock clamp for atomizing of aeroengine swirler is experimental | |
| CN204153814U (en) | A kind of igniter of novel biomass combustor | |
| CN201866771U (en) | Infrared furnace end for multifunctional medium-pressure furnace | |
| CN202250484U (en) | Air bursting substance compression generator | |
| CN211902889U (en) | Improved ignition device for heat storage combustor | |
| CN2504504Y (en) | Low heat value gas burning dispersing device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200814 Termination date: 20211217 |