CN108931148A - A kind of pipe heat exchanger using bismuth doping effectively insulating piece - Google Patents
A kind of pipe heat exchanger using bismuth doping effectively insulating piece Download PDFInfo
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- CN108931148A CN108931148A CN201810541635.0A CN201810541635A CN108931148A CN 108931148 A CN108931148 A CN 108931148A CN 201810541635 A CN201810541635 A CN 201810541635A CN 108931148 A CN108931148 A CN 108931148A
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- Prior art keywords
- heat exchanger
- parts
- bismuth
- shell
- pipe
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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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
- F28D7/16—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being arranged in parallel spaced relation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F21/00—Constructions of heat-exchange apparatus characterised by the selection of particular materials
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F2270/00—Thermal insulation; Thermal decoupling
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Reinforced Plastic Materials (AREA)
Abstract
Present invention relates particularly to a kind of pipe heat exchangers using bismuth doping effectively insulating piece, including heat exchanger shell and multiple heat exchanger tubes, heat exchanger shell is made of outer cover of heat exchanger body and heat exchanger inner housing, the top of heat exchanger shell is provided with water inlet, the lower part of heat exchanger shell is provided with water outlet, multiple heat exchanger tubes are provided in the closing inner chamber of heat exchanger inner housing, the axial direction of multiple heat exchanger tubes is parallel to each other, the shell of the equipment is double-layer structure, and bismuth is set between inner housing and the cavity of outer housing and adulterates effectively insulating piece, play good heat insulation and preservation effect.
Description
Technical field
The invention belongs to technical field of heat exchange equipment；More particularly to a kind of pipe type heat transfer using bismuth doping effectively insulating piece
Device.
Background technique
Heat exchanger is to realize heat transfer between material between a kind of fluid at two or more different temperatures, makes heat
Amount passes to the lower fluid of temperature by the higher fluid of temperature, so that fluid temperature (F.T.) is reached the index of flow specification, in chemical industry, stone
It is occupied an important position in oil, power, food, pharmacy and other many industrial productions.
CN101086435A discloses a kind of pipe heat exchanger, the heat exchanger include water storage tank inner container and be located at water storage tank inner container
Internal heat exchanger tube and flange installs the heat exchanger tube on the flange, and the flange and the liner are cooperatively connected.
CN1916550A discloses a kind of pipe heat exchanger, including heat exchanger tube and is arranged in the heat exchange of heat exchange pipe external surface
Component and the auxiliary heat exchanging device that auxiliary heat-exchanging is carried out for exchanging thermal part, the heat exchanger components are to be covered on outside heat exchanger tube
The metal foam on surface, metal foam inside form the metal foam hole of supplied gas or liquid medium circulation.
CN201935610U discloses a kind of pipe heat exchanger, includes shell, and the shell upper end is provided with upper tube box,
Lower end is provided with lower tube box, and the central axes of the shell are provided with central tube inside housings, are provided with heat exchanger tube on central tube,
The heat exchanger tube is wound around on central tube.The upper tube box has upper perforated plate, and the lower tube box has lower perforated plate, the center
The both ends of pipe are connected to upper perforated plate and lower perforated plate.The effective pipe collar of heat exchange is fixed on central tube.The heat exchanger tube it
Between be provided with parting bead, parting bead is connected to heat exchanger tube with pipe clamp.
The technical solution that the above patent provides, heat exchanger heat insulation effect is bad, and a large amount of heat is dispersed into sky by shell
In gas, waste is caused；Heat exchange area is small, and the medium in heat exchanger tube is fast by speed, cannot sufficiently exchange heat.
Summary of the invention
In order to overcome deficiency present in background technique, the present invention provides a kind of tubular type using bismuth doping effectively insulating piece
Heat exchanger.
Technical solution used in the present invention is：
A kind of pipe heat exchanger, including heat exchanger shell and multiple heat exchanger tubes, heat exchanger shell is by outer cover of heat exchanger body and heat exchange
Device inner housing composition, the top of heat exchanger shell are provided with water inlet, and the lower part of heat exchanger shell is provided with water outlet, heat exchanger
Multiple heat exchanger tubes are provided in the closing inner chamber of inner housing, the axial direction of multiple heat exchanger tubes is parallel to each other, and the heat exchanger tube is
The upper end of spiral-shaped structure, heat exchanger tube is connect with outlet pipe, and the lower end of heat exchanger tube is connect with inlet pipe, and outlet pipe and inlet pipe stretch out shell
Outside, effectively insulating piece is adulterated filled with bismuth between the outer cover of heat exchanger body and heat exchanger inner housing.
The bismuth doping effectively insulating piece is prepared as follows：
40-50 parts of brucite fibers and 20-25 parts of quartz glass fibres are dispersed using mechanical stirring device, when dispersion stirs
Mixing speed is 500-800r/min, time 5min, the composite fibre for then obtaining dispersion, 50-60 parts of nano-scale white carbon blacks
Powder, 30-40 parts of bismuth doping insulation particles, 10-15 parts of magnesium chlorides, 15-20 parts of micropore perlites and 3-10 parts of attapulgites are complete
Portion is added in high-speed mixer, and being mixed 30-40 minutes can discharge, and fiber-powder mixture is obtained, by fiber-powder
Last mixture is packed into mold, and then mold is put into the molding equipment with negative pressure device, and dry method is suppressed at 1-6MPa
Effectively insulating piece is adulterated at sheet material to get to the bismuth.
The bismuth doping insulation particle is prepared as follows：
By weight, 10-15 parts of ethyl orthosilicates, 1-10 parts of diethyl dibutoxy silane and 40-50 parts of methanol are mixed, then
70-80 parts of deionized waters and 0.01-0.05 parts of hydrochloric acid are added, hydrolyze, 0.1-0.7 parts of ammonium hydroxide are added after complete hydrolysis, stirring obtains
To silica solution, then add 30-40 parts of Zirconium oxide fibres, 16-25 parts of crystal whisker of hexa potassium titanate and 15-20 parts of silicon carbide,
0.005-0.05 parts of tetrabutyl tetrachloro gallic acid, 0.01-0.05 parts of trifluoro propyl dimethyl silicone polymers/PEG-10 crosslinking are poly-
Conjunction object, 0.01-0.06 part three [bis- (trimethyl silane) amine of N, N-] erbium, 0.01-0.06 parts of fluorenylmethyloxycarbonyl succinimides,
0.01-0.06 parts of bismuth hexafluoro -2,4- pentanedionates, 0.05-0.5 parts of cetyl glyceryl ether/glycerol copolymers are mixed to form multiple
Colloidal sol is closed, complex sol is poured into mold, is then placed in supercritical fluid drying equipment, the nitrogen of preliminary filling 1-5MPa, with
1-5 DEG C/min of speed is heated to 260-280 DEG C, keeps the temperature 70-80 minutes, then with 1-6MPa/ hours speed slow release pressures
Power is finally swept 15-20 minutes with nitrogen punching, is crushed, and the bismuth doping insulation particle is obtained.
The water inlet is connected with cooling source, and the water outlet is connected with cyclic water tank.
The water outlet is equipped with the temperature sensor for measuring outlet temperature.
The invention has the advantages that compared with the prior art,：Heat exchanger tube is spiral-shaped structure, and heat exchange area is big, and heat is handed over
It changes sufficiently；Medium enters from the lower end of heat exchanger tube, flows out from the upper end of heat exchanger tube, the flow velocity of medium is slower, when increasing heat exchange
Between；In addition, the shell of the equipment is double-layer structure, and bismuth is set between inner housing and the cavity of outer housing and adulterates effectively insulating
Piece plays good heat insulation and preservation effect.
Specific embodiment
Below by specific embodiment, the invention will be further described：
Embodiment 1
A kind of pipe heat exchanger, including heat exchanger shell and multiple heat exchanger tubes, heat exchanger shell is by outer cover of heat exchanger body and heat exchange
Device inner housing composition, the top of heat exchanger shell are provided with water inlet, and the lower part of heat exchanger shell is provided with water outlet, heat exchanger
Multiple heat exchanger tubes are provided in the closing inner chamber of inner housing, the axial direction of multiple heat exchanger tubes is parallel to each other, and the heat exchanger tube is
The upper end of spiral-shaped structure, heat exchanger tube is connect with outlet pipe, and the lower end of heat exchanger tube is connect with inlet pipe, and outlet pipe and inlet pipe stretch out shell
Outside, effectively insulating piece is adulterated filled with bismuth between the outer cover of heat exchanger body and heat exchanger inner housing.Wherein, the water inlet connects
It is connected to cooling source, the water outlet is connected with cyclic water tank, and the water outlet is equipped with the temperature for measuring outlet temperature and passes
Sensor.
The bismuth doping effectively insulating piece is prepared as follows：
45 parts of brucite fibers and 23 parts of quartz glass fibres are dispersed using mechanical stirring device, mixing speed when dispersion
For 700r/min, time 5min, it then will disperse obtained composite fibre, 55 parts of nano-scale white carbon black powder, 35 parts of bismuths and mix
Miscellaneous insulation particle, 13 parts of magnesium chlorides, 18 parts of micropore perlites and 8 parts of attapulgites are all added in high-speed mixer, mixing
Stirring can discharge for 35 minutes, obtain fiber-powder mixture, fiber-powder mixture is packed into mold, then by mold
It is put into the molding equipment with negative pressure device, dry method is pressed into sheet material and adulterates effectively insulating to get to the bismuth at 4MPa
Piece.
The bismuth doping insulation particle is prepared as follows：
By weight, 13 parts of ethyl orthosilicates, 6 parts of diethyl dibutoxy silane and 45 parts of methanol are mixed, adds 75 parts
Deionized water and 0.03 part of hydrochloric acid hydrolyze, and 0.4 part of ammonium hydroxide is added after complete hydrolysis, and stirring obtains silica solution, then adds
35 parts of Zirconium oxide fibres, 21 parts of crystal whisker of hexa potassium titanate, 18 parts of silicon carbide, 0.009 part of tetrabutyl tetrachloro gallic acid, 0.04 part of trifluoro
Propyl dimethyl silicone polymer/PEG-10 cross-linked polymer, 0.03 part of three [bis- (trimethyl silane) amine of N, N-] erbium, 0.04 part
Fluorenylmethyloxycarbonyl succinimide, 0.03 part of bismuth hexafluoro -2,4- pentanedionate, 0.2 part of cetyl glyceryl ether/glycerol copolymerization
Object is mixed to form complex sol, and complex sol is poured into mold, is then placed in supercritical fluid drying equipment, preliminary filling
The nitrogen of 3MPa is heated to 270 DEG C with 3 DEG C/min of speed, keeps the temperature 75 minutes, then with 4MPa/ hours speed slow release pressures
Power is finally swept 18 minutes with nitrogen punching, is crushed, and the bismuth doping insulation particle is obtained.
Embodiment 2
A kind of pipe heat exchanger, including heat exchanger shell and multiple heat exchanger tubes, heat exchanger shell is by outer cover of heat exchanger body and heat exchange
Device inner housing composition, the top of heat exchanger shell are provided with water inlet, and the lower part of heat exchanger shell is provided with water outlet, heat exchanger
Multiple heat exchanger tubes are provided in the closing inner chamber of inner housing, the axial direction of multiple heat exchanger tubes is parallel to each other, and the heat exchanger tube is
The upper end of spiral-shaped structure, heat exchanger tube is connect with outlet pipe, and the lower end of heat exchanger tube is connect with inlet pipe, and outlet pipe and inlet pipe stretch out shell
Outside, effectively insulating piece is adulterated filled with bismuth between the outer cover of heat exchanger body and heat exchanger inner housing.Wherein, the water inlet connects
It is connected to cooling source, the water outlet is connected with cyclic water tank, and the water outlet is equipped with the temperature for measuring outlet temperature and passes
Sensor.
The bismuth doping effectively insulating piece is prepared as follows：
40 parts of brucite fibers and 20 parts of quartz glass fibres are dispersed using mechanical stirring device, mixing speed when dispersion
For 500r/min, time 5min, it then will disperse obtained composite fibre, 50 parts of nano-scale white carbon black powder, 30 parts of bismuths and mix
Miscellaneous insulation particle, 10 parts of magnesium chlorides, 15 parts of micropore perlites and 3 parts of attapulgites are all added in high-speed mixer, mixing
Stirring can discharge for 30 minutes, obtain fiber-powder mixture, fiber-powder mixture is packed into mold, then by mold
It is put into the molding equipment with negative pressure device, dry method is pressed into sheet material and adulterates effectively insulating to get to the bismuth at 1MPa
Piece.
The bismuth doping insulation particle is prepared as follows：
By weight, 10 parts of ethyl orthosilicates, 1 part of diethyl dibutoxy silane and 40 parts of methanol are mixed, adds 70 parts
Deionized water and 0.01 part of hydrochloric acid hydrolyze, and 0.1 part of ammonium hydroxide is added after complete hydrolysis, and stirring obtains silica solution, then adds
30 parts of Zirconium oxide fibres, 16 parts of crystal whisker of hexa potassium titanate, 15 parts of silicon carbide, 0.005 part of tetrabutyl tetrachloro gallic acid, 0.01 part three
Fluoropropyl dimethyl silicone polymer/PEG-10 cross-linked polymer, 0.01 part of three [bis- (trimethyl silane) amine of N, N-] erbium, 0.01
Part fluorenylmethyloxycarbonyl succinimide, 0.01 part of bismuth hexafluoro -2,4- pentanedionate, 0.05 part of cetyl glyceryl ether/glycerol are total
Polymers is mixed to form complex sol, and complex sol is poured into mold, is then placed in supercritical fluid drying equipment, preliminary filling
The nitrogen of 1MPa is heated to 260 DEG C with 1 DEG C/min of speed, keeps the temperature 70 minutes, then with 1MPa/ hours speed slow release pressures
Power is finally swept 15 minutes with nitrogen punching, is crushed, and the bismuth doping insulation particle is obtained.
Embodiment 3
A kind of pipe heat exchanger, including heat exchanger shell and multiple heat exchanger tubes, heat exchanger shell is by outer cover of heat exchanger body and heat exchange
Device inner housing composition, the top of heat exchanger shell are provided with water inlet, and the lower part of heat exchanger shell is provided with water outlet, heat exchanger
Multiple heat exchanger tubes are provided in the closing inner chamber of inner housing, the axial direction of multiple heat exchanger tubes is parallel to each other, and the heat exchanger tube is
The upper end of spiral-shaped structure, heat exchanger tube is connect with outlet pipe, and the lower end of heat exchanger tube is connect with inlet pipe, and outlet pipe and inlet pipe stretch out shell
Outside, effectively insulating piece is adulterated filled with bismuth between the outer cover of heat exchanger body and heat exchanger inner housing.Wherein, the water inlet connects
It is connected to cooling source, the water outlet is connected with cyclic water tank, and the water outlet is equipped with the temperature for measuring outlet temperature and passes
Sensor.
The bismuth doping effectively insulating piece is prepared as follows：
50 parts of brucite fibers and 25 parts of quartz glass fibres are dispersed using mechanical stirring device, mixing speed when dispersion
For 800r/min, time 5min, it then will disperse obtained composite fibre, 60 parts of nano-scale white carbon black powder, 40 parts of bismuths and mix
Miscellaneous insulation particle, 15 parts of magnesium chlorides, 20 parts of micropore perlites and 10 parts of attapulgites are all added in high-speed mixer, mixing
Stirring can discharge for 40 minutes, obtain fiber-powder mixture, fiber-powder mixture is packed into mold, then by mold
It is put into the molding equipment with negative pressure device, dry method is pressed into sheet material and adulterates effectively insulating to get to the bismuth at 6MPa
Piece.
The bismuth doping insulation particle is prepared as follows：
By weight, 15 parts of ethyl orthosilicates, 10 parts of diethyl dibutoxy silane and 50 parts of methanol are mixed, adds 80 parts
Deionized water and 0.05 part of hydrochloric acid hydrolyze, and 0.7 part of ammonium hydroxide is added after complete hydrolysis, and stirring obtains silica solution, then adds
40 parts of Zirconium oxide fibres, 25 parts of crystal whisker of hexa potassium titanate and 20 parts of silicon carbide, 0.05 part of tetrabutyl tetrachloro gallic acid, 0.05 part of trifluoro
Propyl dimethyl silicone polymer/PEG-10 cross-linked polymer, 0.06 part of three [bis- (trimethyl silane) amine of N, N-] erbium, 0.06 part
Fluorenylmethyloxycarbonyl succinimide, 0.06 part of bismuth hexafluoro -2,4- pentanedionate, 0.5 part of cetyl glyceryl ether/glycerol copolymerization
Object is mixed to form complex sol, and complex sol is poured into mold, is then placed in supercritical fluid drying equipment, preliminary filling
The nitrogen of 5MPa is heated to 280 DEG C with 5 DEG C/min of speed, keeps the temperature 80 minutes, then with 6MPa/ hours speed slow release pressures
Power is finally swept 20 minutes with nitrogen punching, is crushed, and the bismuth doping insulation particle is obtained.
Comparative example 1
It prepares and does not include bismuth doping insulation particle, the other the same as in Example 1 in component.
Comparative example 2
It prepares and does not include tetrabutyl tetrachloro gallic acid, the other the same as in Example 1 in component.
Comparative example 3
It prepares and does not include trifluoro propyl dimethyl silicone polymer/PEG-10 cross-linked polymer, the other the same as in Example 1 in component.
Comparative example 4
It prepares and does not include three [bis- (trimethyl silane) amine of N, N-] erbiums, the other the same as in Example 1 in component.
Comparative example 5
It prepares and does not include fluorenylmethyloxycarbonyl succinimide, the other the same as in Example 1 in component.
Comparative example 6
It prepares and does not include bismuth hexafluoro -2,4- pentanedionate, the other the same as in Example 1 in component.
Comparative example 7
It prepares and does not include cetyl glyceryl ether/glycerol copolymer, the other the same as in Example 1 in component.
Table：The room temperature and high temperature of the doping effectively insulating piece of bismuth made from different process（500℃）The comparison knot of thermal coefficient
Fruit.
Claims (4)
1. a kind of pipe heat exchanger using bismuth doping effectively insulating piece, including heat exchanger shell and multiple heat exchanger tubes, heat exchanger
Shell is made of outer cover of heat exchanger body and heat exchanger inner housing, and the top of heat exchanger shell is provided with water inlet, heat exchanger shell
Lower part be provided with water outlet, multiple heat exchanger tubes are provided in the closing inner chamber of heat exchanger inner housing, multiple heat exchanger tubes
It is axially parallel to each other, the heat exchanger tube is spiral-shaped structure, and the upper end of heat exchanger tube is connect with outlet pipe, the lower end of heat exchanger tube and inlet pipe
Connection, outlet pipe and inlet pipe stretch out outside shell, it is characterised in that：It is filled between the outer cover of heat exchanger body and heat exchanger inner housing
Bismuth adulterates effectively insulating piece；
The bismuth doping effectively insulating piece is prepared as follows：
40-50 parts of brucite fibers and 20-25 parts of quartz glass fibres are dispersed using mechanical stirring device, when dispersion stirs
Mixing speed is 500-800r/min, time 5min, the composite fibre for then obtaining dispersion, 50-60 parts of nano-scale white carbon blacks
Powder, 30-40 parts of bismuth doping insulation particles, 10-15 parts of magnesium chlorides, 15-20 parts of micropore perlites and 3-10 parts of attapulgites are complete
Portion is added in high-speed mixer, and being mixed 30-40 minutes can discharge, and fiber-powder mixture is obtained, by fiber-powder
Last mixture is packed into mold, and then mold is put into the molding equipment with negative pressure device, and dry method is suppressed at 1-6MPa
Effectively insulating piece is adulterated at sheet material to get to the bismuth.
2. pipe heat exchanger according to claim 1, it is characterised in that：The bismuth doping insulation particle is as follows
It is prepared：
By weight, 10-15 parts of ethyl orthosilicates, 1-10 parts of diethyl dibutoxy silane and 40-50 parts of methanol are mixed, then
70-80 parts of deionized waters and 0.01-0.05 parts of hydrochloric acid are added, hydrolyze, 0.1-0.7 parts of ammonium hydroxide are added after complete hydrolysis, stirring obtains
To silica solution, then add 30-40 parts of Zirconium oxide fibres, 16-25 parts of crystal whisker of hexa potassium titanate and 15-20 parts of silicon carbide,
0.005-0.05 parts of tetrabutyl tetrachloro gallic acid, 0.01-0.05 parts of trifluoro propyl dimethyl silicone polymers/PEG-10 crosslinking are poly-
Conjunction object, 0.01-0.06 part three [bis- (trimethyl silane) amine of N, N-] erbium, 0.01-0.06 parts of fluorenylmethyloxycarbonyl succinimides,
0.01-0.06 parts of bismuth hexafluoro -2,4- pentanedionates, 0.05-0.5 parts of cetyl glyceryl ether/glycerol copolymers are mixed to form multiple
Colloidal sol is closed, complex sol is poured into mold, is then placed in supercritical fluid drying equipment, the nitrogen of preliminary filling 1-5MPa, with
1-5 DEG C/min of speed is heated to 260-280 DEG C, keeps the temperature 70-80 minutes, then with 1-6MPa/ hours speed slow release pressures
Power is finally swept 15-20 minutes with nitrogen punching, is crushed, and the bismuth doping insulation particle is obtained.
3. pipe heat exchanger according to claim 1, it is characterised in that：The water inlet is connected with cooling source, it is described go out
The mouth of a river is connected with cyclic water tank.
4. pipe heat exchanger according to claim 1, it is characterised in that：The water outlet is equipped with for measuring water outlet temperature
The temperature sensor of degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810541635.0A CN108931148A (en) | 2018-05-30 | 2018-05-30 | A kind of pipe heat exchanger using bismuth doping effectively insulating piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810541635.0A CN108931148A (en) | 2018-05-30 | 2018-05-30 | A kind of pipe heat exchanger using bismuth doping effectively insulating piece |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108931148A true CN108931148A (en) | 2018-12-04 |
Family
ID=64449458
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810541635.0A Withdrawn CN108931148A (en) | 2018-05-30 | 2018-05-30 | A kind of pipe heat exchanger using bismuth doping effectively insulating piece |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108931148A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112672011A (en) * | 2020-12-19 | 2021-04-16 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Protective device for monitoring camera |
-
2018
- 2018-05-30 CN CN201810541635.0A patent/CN108931148A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112672011A (en) * | 2020-12-19 | 2021-04-16 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Protective device for monitoring camera |
| CN112672011B (en) * | 2020-12-19 | 2022-03-29 | 武汉第二船舶设计研究所(中国船舶重工集团公司第七一九研究所) | Protective device for monitoring camera |
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Application publication date: 20181204 |