CN208205409U - Cylinder type tubular heater - Google Patents
Cylinder type tubular heater Download PDFInfo
- Publication number
- CN208205409U CN208205409U CN201820608704.0U CN201820608704U CN208205409U CN 208205409 U CN208205409 U CN 208205409U CN 201820608704 U CN201820608704 U CN 201820608704U CN 208205409 U CN208205409 U CN 208205409U
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- Prior art keywords
- burner
- radiation chamber
- boiler tube
- furnace wall
- tubular heater
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- 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.)
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- 230000005855 radiation Effects 0.000 claims abstract description 83
- 238000002485 combustion reaction Methods 0.000 claims description 8
- 230000001464 adherent effect Effects 0.000 claims description 6
- 240000002853 Nelumbo nucifera Species 0.000 claims 1
- 235000006508 Nelumbo nucifera Nutrition 0.000 claims 1
- 235000006510 Nelumbo pentapetala Nutrition 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 14
- 239000000126 substance Substances 0.000 abstract description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 6
- 239000003546 flue gas Substances 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000004939 coking Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000011449 brick Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
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- Combustion Of Fluid Fuel (AREA)
Abstract
The utility model relates to field of chemical equipment, disclose a kind of cylinder type tubular heater, wherein, the tubular heater includes radiation chamber (10), intermediate furnace wall (20), first burner (30), second burner (40) and multiple first boiler tubes (50), multiple first boiler tubes surround the circumferential array of radiation chamber in radiation chamber, intermediate furnace walled is at closed ring and positioned at the middle part of radiation chamber, first burner is arranged in the space that intermediate furnace wall is enclosed, second burner is arranged in radiation chamber and between intermediate furnace wall and the first boiler tube, the height of intermediate furnace wall is lower than the height of the first boiler tube.Intermediate furnace wall will be divided into two along short transverse for hot-zone in radiation chamber, first burner mainly heats the top of the first boiler tube, the lower part of the first boiler tube of main heating of second burner, the calorific intensity peak value of the first boiler tube is effectively reduced, so that the first boiler tube is more uniformly spread along the calorific intensity of short transverse.
Description
Technical field
The utility model relates to field of chemical equipment, more particularly to cylinder type tubular heater.
Background technique
Tubular heater is the important heating equipment of chemical field.As shown in Figure 1, existing cylinder type tubular heater is
Single-stage central heating mode, wherein cylinder type tubular heater generally includes convection cell 60 and radiation chamber 10, sets in radiation chamber 10
It is equipped with the first boiler tube 50 being disposed vertically circumferentially arranged and is circumferentially arranged in radiation indoor burner F, burner F
Heat by radiating and the heat transfer type of convection current passes to the first boiler tube 50 of surrounding, to heat the technique in the first boiler tube 50
Medium.But the first boiler tube 50, only by the direct radiation of single side flame and flue gas, the average calorific intensity of the first boiler tube 50 is lower
(about 15-25kW/m2), also, since burner is typically mounted on the bottom of radiation chamber 10, heat concentrates on radiation chamber 10
Bottom release causes radiation chamber 10 interior uneven along the calorific intensity distributed pole of short transverse, specifically, middle and lower part in radiation chamber 10
Local calorific intensity up to 2-4 times of average calorific intensity.If you need to improve average calorific intensity, then need to increase the heat release of burner F
Amount, the local calorific intensity that this will lead to 10 middle and lower part of radiation chamber is higher, causes 50 middle and lower part hot-spot of the first boiler tube, when first
When processing medium in boiler tube 50 is that pressure is higher in the type or the first boiler tube 50 of easy coking, easily lead to the first boiler tube 50 innings
Portion's coking or boiler tube explosion, seriously affect the cycle of operation and the safe operation of tubular heater.
Utility model content
The purpose of this utility model is to overcome furnaces in the radiation chamber of cylinder type tubular heater of the existing technology
The non-uniform problem of pipe short transverse calorific intensity, provides a kind of cylinder type tubular heater, which has improvement
Calorific intensity distribution.
To achieve the goals above, on the one hand the utility model provides a kind of cylinder type tubular heater, wherein the circle
Cartridge type tubular heater includes columnar radiation chamber, intermediate furnace wall, the first burner, the second burner and multiple first furnaces
Pipe, multiple first boiler tubes surround the circumferential array of the radiation chamber in the radiation chamber, and the intermediate furnace walled is at envelope
Closed-loop shaped and the middle part for being located at the radiation chamber, first burner are arranged in the space that the intermediate furnace wall is enclosed and lead to
It is heat-insulated to cross the intermediate furnace wall, second burner is arranged in the radiation chamber and is located at the intermediate furnace wall and described the
Between one boiler tube, the height of the intermediate furnace wall is lower than the height of first boiler tube.
Preferably, first boiler tube is arranged vertically in the radiation chamber, the length of first boiler tube with
The height of the radiation chamber is suitable, and the height of the intermediate furnace wall is not higher than the half of the height of the radiation chamber.
Preferably, the percentage for the calorific value that the thermic load of first burner accounts for the tubular heater is greater than
50%, the thermic load of second burner accounts for the rest part of the calorific value of the tubular heater.
Preferably: the tubular heater includes multiple first burners, and multiple first burners are described in
Intermediate furnace wall is circumferentially arranged；And/or the tubular heater includes multiple second burners, and multiple described
Two burners are circumferentially arranged along the intermediate furnace wall.
Preferably, first burner is circular burner and the bottom for being mounted on the radiation chamber, second combustion
Burner is flat flame burner and the bottom for being mounted on the radiation chamber, and the flat flame burner is set as vertical combustion
Or attached wall burning.
Preferably, the intermediate furnace wall has dilatation joint and/or peephole.
Preferably, the intermediate furnace wall is straight tube shape, and the straight-cylindrical cross section is round or regular polygon.
Preferably, multiple first boiler tubes are along the circumferential at the single or double arrangement in part of the radiation chamber, in which: single
The adherent setting of the first boiler tube of row；The described in the row close to the side wall of the radiation chamber of double first boiler tube
The adherent setting of one boiler tube.
Preferably, first boiler tube uses same diameter or multiple diameters.
Preferably, the tubular heater includes the convection cell above the radiation chamber, setting in the convection cell
There is the second boiler tube.
Through the above technical solutions, intermediate furnace wall will be divided into two along short transverse for hot-zone, the first combustion in radiation chamber
The heat of burner is obstructed by intermediate furnace wall, the main top for heating the first boiler tube, and the heat of the second burner mainly heats the
The lower part of one boiler tube, also, the height of intermediate furnace wall can be adjusted flexibly according to burner Load Distribution and flame height, with list
Grade central heating mode is compared, and the calorific intensity peak value of the first boiler tube short transverse is effectively reduced, so that the first boiler tube is along height
The calorific intensity in direction is more uniformly spread.
Detailed description of the invention
Fig. 1 is the schematic diagram for showing the internal structure of tubular heater of the prior art；
Fig. 2 is the signal for showing a kind of internal structure of the cylinder type tubular heater of embodiment of the utility model
Figure；
Fig. 3 is the top view of the radiation chamber of the cylinder type tubular heater of Fig. 2；
Fig. 4 is the top view of the radiation chamber of the cylinder type tubular heater of the another embodiment of the utility model；
Fig. 5 is the calorific intensity comparison diagram of embodiment 1 and comparative example；
Fig. 6 is the calorific intensity comparison diagram of embodiment 2 and comparative example.
Description of symbols
10- radiation chamber, the centre 20- furnace wall, the first burner of 30-, the second burner of 40-, the first boiler tube of 50-, 60- convection current
Room, the burner of the F- prior art.
Specific embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be understood that herein
Described specific embodiment is only used for describing and explaining the present invention, and is not intended to limit the utility model.
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " is usual
Refer to reference to upper and lower, left and right shown in the drawings；" inside and outside " refers to the inside and outside of the profile relative to each component itself.
The utility model provides a kind of cylinder type tubular heater (hereinafter referred to as tubular heater), wherein the tubular type
Heating furnace includes radiation chamber 10, intermediate furnace wall 20, the first burner 30, the second burner 40 and multiple first boiler tubes 50, multiple
First boiler tube 50 surrounds the circumferential array of the radiation chamber 10 in the radiation chamber 10, and the intermediate furnace wall 20 surrounds envelope
The space that the intermediate furnace wall 20 is enclosed is arranged in closed-loop shaped and the middle part for being located at the radiation chamber 10, first burner 30
Interior and heat-insulated by the intermediate furnace wall 20, second burner 40 is arranged in the radiation chamber 10 and is located at the centre
Between furnace wall 20 and first boiler tube 50, the height of the intermediate furnace wall 20 is lower than the height of first boiler tube 50.
In the tubular heater of the utility model, intermediate furnace wall 20 will be divided into along two of short transverse confessions in radiation chamber 10
The heat of hot-zone, the first burner 30 is obstructed by intermediate furnace wall 20, thus the top of the first boiler tube 50 of main heating, the second combustion
The heat of burner 40 mainly heats the lower part of the first boiler tube 50, so that the first boiler tube 50 is heated evenly along short transverse.In also,
Between the height of furnace wall 20 can be adjusted flexibly according to burner Load Distribution and flame height, with single-stage central heating mode phase
Than effectively reducing the calorific intensity peak value of the first boiler tube short transverse.
Wherein it is possible to rationally design accounting for for the calorific value of the first burner 30 and the second burner 40 in tubular heater
Than to realize the thermally equivalent of the first boiler tube 50.It specifically can be according to height of intermediate furnace wall 20 etc. because usually designing.It is preferred that
Ground, first boiler tube 50 are arranged vertically in the radiation chamber 10, the length of first boiler tube 50 and the spoke
The height for penetrating room 10 is suitable, to avoid intermediate furnace wall 20 from having an adverse effect heating effect whole in radiation chamber 10, can make
Intermediate furnace wall 20 is set as the mid-height not higher than radiation chamber 10.Preferably, the height of the intermediate furnace wall 20 is the spoke
0.05-0.5 times for penetrating the height of room 10.In addition, the first burner 30 for being located at 10 middle part of radiation chamber should be used as main burner,
Its heat discharged can heat intermediate furnace wall 20, and the flue gas of generation can be flowed up along intermediate furnace wall 20, and in intermediate furnace
The entire space for being located at 20 top of intermediate furnace wall of radiation chamber 10 is diffused to above wall 20, so as to in radiation chamber 10 integrally plus
Heat.Specifically, the thermic load of first burner account for the calorific value of the tubular heater percentage be greater than 50%, it is described
The thermic load of second burner accounts for the rest part of the calorific value of the tubular heater.Preferably, first burner 30
Thermic load account for the tubular heater calorific value 50-90%, the thermic load of second burner 40 accounts for the tubular type
The rest part of the calorific value of heating furnace.
In addition, for along intermediate 20 even distribution heating of furnace wall, the tubular heater may include multiple first burners
30, multiple being circumferentially arranged along the intermediate furnace wall 20 of first burner 30.Also, the tubular heater may include
Multiple second burners 40, multiple being circumferentially arranged along the intermediate furnace wall 20 of second burner 40.It is understood that
, with multiple first burners 30 and/or in the case where multiple second burner 40, above-mentioned first burner 30 or the second
The thermic load of burner 40 is multiple first burners 30 or multiple second combustions in the accounting of the calorific value of the tubular heater
Accounting of the total heat duties of burner 40 in the calorific value of the tubular heater.
In addition, the first burner 30 and the second burner 40 can select type appropriate, and install it is in place, only
The first burner 30 is wanted to be located in intermediate 20 enclosed space of furnace wall, the second burner 40 is located at intermediate furnace wall 20 and the first boiler tube 50
Between.Preferably, first burner 30 can be powerful circular burner, to reduce the number of units of burner,
And it is mounted on the bottom of the radiation chamber 10, to increase the upward mobility of flue gas.Also, second burner 40 can be
Flat flame burner and the bottom for being mounted on the radiation chamber 10, the flat flame burner are set as vertical combustion or attached
Wall burning, avoidable burner flame lick pipe.
It may be deformed after intermediate furnace wall 20 is heated, it is preferable that the intermediate furnace wall 20 can have dilatation joint, in allowing
Between micro-strain of the furnace wall 20 when heated.Wherein, dilatation joint can be arranged along the short transverse of intermediate furnace wall 20, and in
Between the annular, peripheral enclosed of furnace wall 20 multiple dilatation joints are set.It should be understood that dilatation joint should be positioned to allow for intermediate furnace wall 20
Temperature distortion, but answer it is as small as possible, to ensure the isolation effect of heat that intermediate furnace wall 20 discharges the first burner 30
(that is, intermediate furnace wall 20 and the engraved structure distributed outward without permission heat and flue gas).In addition, the first combustion in order to facilitate observation of
Peephole has can be set on the intermediate furnace wall 20 in the flame of burner 30.But it is used only for seeing likewise, peephole should be arranged
Flame is examined, and does not influence intermediate furnace wall 20 as far as possible to the heat insulation of the first burner 30.Intermediate furnace wall 20 can be various
Material appropriate, as long as can substantially completely cut off the heat of the first burner 30 release, such as can be by highiy refractory brick
Or refractory metal is made.
In addition, intermediate furnace wall 20 can surround various closed rings appropriate, this can according to the size of radiation chamber 10 come
Arrangement, to form the roughly the same annulus in gap between intermediate furnace wall 20 and the side wall of radiation chamber 10, thus for week
Roughly the same heating environment is provided to multiple first boiler tubes 50 of setting.Wherein, it is with center that radiation chamber 10, which is cross section,
Shape straight structure.Preferably, the intermediate furnace wall 20 can be straight tube shape, and the straight-cylindrical cross section is circle
(as shown in Figure 4) or regular polygon (as shown in Figure 3).Intermediate furnace wall 20 can be substantially arranged as with the radiation chamber 10 in
The heart.Wherein it is possible to according to the size of the ratio of height to diameter of the factor designs such as treating capacity radiation chamber 10 and intermediate furnace wall 20.For example, described
The ratio of height to diameter of radiation chamber 10 can be 2:1-5:1, and the external diameter of a circle of the circular diameter or the regular polygon is institute
0.2-0.8 times for stating the diameter of radiation chamber 10.
In addition, the first burner 30 and the second burner 40 can be set to apart from intermediate 20 appropriately distance of furnace wall.Example
Such as, in the case where intermediate furnace wall 20 is straight tube shape and the first burner 30 and the second burner 40 are multiple, the first burning
Device 30 can (be diametrically intermediate furnace wall 20 when the cross section of intermediate furnace wall 20 is regular polygon than the internal diameter of intermediate furnace wall 20
The external diameter of a circle for the regular polygon that inner wall is constituted) small 100cm pitch circle setting, the second burner 40 can be diametrically than centre
The pitch circle of the big 100cm of the internal diameter of furnace wall 20 is arranged.
In the utility model, the first boiler tube 50 can be along the circumferential at the single or double arrangement in part of radiation chamber 10, specifically
: the single adherent setting of first boiler tube 50；The side wall close to the radiation chamber 10 of double first boiler tube 50
A row described in the adherent setting of the first boiler tube 50.Two rows of first boiler tubes 50 can circumferentially be staggered, so that the first boiler tube 50
Surface be exposed in flue gas as far as possible.Wherein, no matter the single or double arrangement in part, between the first circumferentially-adjacent boiler tube 50
Distance can be identical or different.
In the utility model, the double arrangement in part, which refers in double, arranges 50 row of the first boiler tube close to the one of the side wall of radiation chamber 10
A complete circle is arranged into, circumferentially ranked first that 50 inside local setting of boiler tube is another to ranked first boiler tube 50 at this.Wherein it is possible to
The inside setting of the circumferential different location of the first boiler tube of whole circle 50 is another to ranked first boiler tube 50, single, double alternate to be formed
Structure.
In addition, rows of first boiler tube 50 is connected with each other along orientation, so that the technique in the first boiler tube 50 is situated between
Matter can successively be flowed along multiple first boiler tubes 50, increase processing medium residence time and heating time in radiation chamber 10.
In double situation, processing medium can be made first to arrange the first boiler tube 50 along one of the side wall close to radiation chamber 10 and successively flowed, so
It arranges into one of the side wall far from radiation chamber 10 and is successively flowed in the first boiler tube 50 afterwards.It is of course also possible to make processing medium elder generation edge
One of side wall far from radiation chamber 10 arranges the first boiler tube 50 and successively flows.
Wherein, first boiler tube 50 can use same diameter or multiple diameters.For example, same ranked first boiler tube 50
In, it can have different tube diameters.For example, the pipe of the first boiler tube 50 can be made as processing medium is along the flowing of the first boiler tube 50
Diameter becomes larger.It is connected between the first adjacent boiler tube 50 by connector, for the variation for adapting to caliber, the size of connector may also
Variation, for this purpose, the spacing between the first boiler tube 50 can also be adjusted accordingly.
In addition, as shown in Fig. 2, the tubular heater includes the convection cell 60 positioned at 10 top of the radiation chamber, it is described
The second boiler tube is provided in convection cell 60.Wherein, the flue gas in radiation chamber 10 can rise in convection cell 60, to heat second
Boiler tube.Second boiler tube can be connected to first boiler tube 50, and processing medium can first pass through the second boiler tube in convection cell 60
It is heated, is heated in radiation chamber 10 subsequently into the first boiler tube 50.Certainly, the second boiler tube can not also be with the first boiler tube 50
Connection, to heat different processing mediums respectively in convection cell 60 and radiation chamber 10.Wherein, the second boiler tube can be along level
Direction arrangement.
The tubular heater of the utility model can be used for the processing medium heating of various fluids, such as gas and original
Oil, reduced crude, de-oiled asphalt etc..
The advantages of illustrating the utility model below by embodiment and comparative example.
Embodiment 1
Radiation chamber 10 is cylindrical shape, and the height of diameter phi 7600mm, radiation chamber 10 are 13m, and the length of the first boiler tube 50 is
12m, outer diameter φ 168mm, the first boiler tube 50 is single to be equidistantly spaced from；Second boiler tube outer diameter φ 152mm, length 4.0m, second
Boiler tube totally 18 row.First burner 30 is circular burner, and total heat duties account for the 70% of full furnace calorific value, and the second burner 40 is
Wall-attached burner, total heat duties account for the 30% of full furnace calorific value, and the section of intermediate furnace wall 20 is regular hexagon, and circumscribed circular diameter is
3.0m, the height of intermediate furnace wall 20 are 2.0m.
Embodiment 2
Using structure similar to Example 1, the difference is that, the section of intermediate furnace wall 20 is circle.Intermediate furnace wall
20 diameter is 3.5m, is highly 2.0m.First burner, 30 total heat duties account for the 80% of full furnace calorific value, the second burner 40
Total heat duties account for the 20% of full furnace calorific value.
Comparative example
Using the arrangement of 10 structure of radiation chamber and the first boiler tube 50 same as Example 1.Without setting intermediate furnace
Only circular burner is arranged in radiation chamber 10 in wall 20.
Known to Fig. 5 and Fig. 6 (being wherein, to be measured upwards from 10 bottom of radiation chamber along the first boiler tube extension position), implement
Calorific intensity value at the different location of the length of first boiler tube 50 of example 1,2 is more uniform, and calorific intensity peak value is by comparative example 1
45kW/m2It is down to 30kW/m2, decrease by 30% or more.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
In this.In the range of the technology design of the utility model, a variety of simple variants can be carried out to the technical solution of the utility model.
The utility model includes that each particular technique feature is combined in any suitable manner.In order to avoid unnecessary repetition,
No further explanation will be given to various combinations of possible ways for the utility model.But these simple variants and combination equally should be considered as this
Utility model disclosure of that, belongs to the protection scope of the utility model.
Claims (10)
1. a kind of cylinder type tubular heater, which is characterized in that the cylinder type tubular heater includes columnar radiation chamber
(10), intermediate furnace wall (20), the first burner (30), the second burner (40) and multiple first boiler tubes (50), multiple described the
One boiler tube (50) surrounds the circumferential array of the radiation chamber (10) in the radiation chamber (10), and the intermediate furnace wall (20) surrounds
Closed ring and the middle part for being located at the radiation chamber (10), first burner (30) are arranged in intermediate furnace wall (20) institute
In the space enclosed and heat-insulated by the intermediate furnace wall (20), the second burner (40) setting is in the radiation chamber (10)
And between the intermediate furnace wall (20) and first boiler tube (50), the height of the intermediate furnace wall (20) is lower than described the
The height of one boiler tube (50).
2. cylinder type tubular heater according to claim 1, which is characterized in that first boiler tube (50) is along vertical side
To being arranged in the radiation chamber (10), the length of first boiler tube (50) is suitable with the height of the radiation chamber (10), institute
State the half of the height of intermediate furnace wall (20) not higher than the height of the radiation chamber (10).
3. cylinder type tubular heater according to claim 2, which is characterized in that the heat of first burner (30) is negative
The percentage that lotus accounts for the calorific value of the cylinder type tubular heater is greater than 50%, and the thermic load of second burner (40) accounts for
The rest part of the calorific value of the cylinder type tubular heater.
4. cylinder type tubular heater according to claim 1, it is characterised in that:
The cylinder type tubular heater includes multiple first burners (30), and multiple first burners (30) are along institute
State being circumferentially arranged for intermediate furnace wall (20)；And/or
The cylinder type tubular heater includes multiple second burners (40), and multiple second burners (40) are along institute
State being circumferentially arranged for intermediate furnace wall (20).
5. cylinder type tubular heater according to claim 1, which is characterized in that first burner (30) is circle
Burner and the bottom for being mounted on the radiation chamber (10), second burner (40) are flat flame burner and are mounted on
The bottom of the radiation chamber (10), the flat flame burner are set as vertical combustion or attached wall burning.
6. cylinder type tubular heater according to claim 1, which is characterized in that the intermediate furnace wall (20) has expansion
Seam and/or peephole.
7. cylinder type tubular heater according to claim 1, which is characterized in that the intermediate furnace wall (20) is straight tube
Shape, the straight-cylindrical cross section are round or regular polygon.
8. cylinder type tubular heater according to claim 1, which is characterized in that multiple first boiler tubes (50) are along institute
State the circumferential at the single or double arrangement in part of radiation chamber (10), in which: the single adherent setting of first boiler tube (50)；It is double
First boiler tube (50) adherent setting described in a row of first boiler tube (50) of row close to the side wall of the radiation chamber (10).
9. cylinder type tubular heater according to claim 1, which is characterized in that first boiler tube (50) is using identical
Diameter or multiple diameters.
10. cylinder type tubular heater according to claim 1, which is characterized in that the cylinder type tubular heater packet
The convection cell (60) being located above the radiation chamber (10) is included, is provided with the second boiler tube in the convection cell (60).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820608704.0U CN208205409U (en) | 2018-04-26 | 2018-04-26 | Cylinder type tubular heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820608704.0U CN208205409U (en) | 2018-04-26 | 2018-04-26 | Cylinder type tubular heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208205409U true CN208205409U (en) | 2018-12-07 |
Family
ID=64521113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820608704.0U Withdrawn - After Issue CN208205409U (en) | 2018-04-26 | 2018-04-26 | Cylinder type tubular heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208205409U (en) |
-
2018
- 2018-04-26 CN CN201820608704.0U patent/CN208205409U/en not_active Withdrawn - After Issue
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221129 Address after: 100728 No. 22 North Main Street, Chaoyang District, Beijing, Chaoyangmen Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Patentee after: CHINA University OF PETROLEUM (EAST CHINA) Patentee after: SINOPEC ENGINEERING Inc. Address before: 266580 No. 66 Changjiang West Road, Huangdao District, Qingdao, Shandong. Patentee before: CHINA University OF PETROLEUM (EAST CHINA) Patentee before: CHINA PETROLEUM & CHEMICAL Corp. Patentee before: QINGDAO SHIDA CAIZHI TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20181207 Effective date of abandoning: 20240206 |
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| AV01 | Patent right actively abandoned |
Granted publication date: 20181207 Effective date of abandoning: 20240206 |
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| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |