CN108006431A - Insulated gas cylinder with excellent service life - Google Patents
Insulated gas cylinder with excellent service life Download PDFInfo
- Publication number
- CN108006431A CN108006431A CN201711299700.5A CN201711299700A CN108006431A CN 108006431 A CN108006431 A CN 108006431A CN 201711299700 A CN201711299700 A CN 201711299700A CN 108006431 A CN108006431 A CN 108006431A
- Authority
- CN
- China
- Prior art keywords
- gas cylinder
- insulated gas
- palladium oxide
- gelatinization
- reaction
- 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.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C1/00—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge
- F17C1/12—Pressure vessels, e.g. gas cylinder, gas tank, replaceable cartridge with provision for thermal insulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/10—Single element gases other than halogens
- B01D2257/108—Hydrogen
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2201/00—Vessel construction, in particular geometry, arrangement or size
- F17C2201/03—Orientation
- F17C2201/032—Orientation with substantially vertical main axis
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/03—Thermal insulations
- F17C2203/0391—Thermal insulations by vacuum
- F17C2203/0395—Getter
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2203/00—Vessel construction, in particular walls or details thereof
- F17C2203/06—Materials for walls or layers thereof; Properties or structures of walls or their materials
- F17C2203/0602—Wall structures; Special features thereof
- F17C2203/0612—Wall structures
- F17C2203/0626—Multiple walls
- F17C2203/0629—Two walls
Abstract
The invention discloses a kind of insulated gas cylinder with excellent service life, the insulated gas cylinder includes liner and shell, and the casing is arranged on the outside of the liner, palladium oxide compound is provided with the cavity formed between the liner and shell；Wherein, the palladium oxide compound is prepared by the following method and obtains：1）Palladium oxide, cyclodextrin, water are subjected to gelatinization reaction so that gelatinization system is made；2）Nickel source, tin source, neodymia, dysprosia, butyl lithium, cetyl trimethylammonium bromide, hydrazine hydrate are added in gelatinization system to carry out hydro-thermal reaction, then filters, is dry with obtained solidfied material；3）By solidfied material ball milling with obtained palladium oxide compound.The insulated gas cylinder, which is used, has excellent service life.
Description
Technical field
The present invention relates to insulated gas cylinder, and in particular, to a kind of insulated gas cylinder with excellent service life.
Background technology
Insulated gas cylinder be it is existing industry or laboratory in a kind of common device, it is used for filling gas, as liquefied gas,
Helium, nitrogen, hydrogen etc..The most basic requirement of insulated gas cylinder is that to have excellent air-tightness and heat-insulating property, because containing
Or gas be harmful to for environment or human body, or be inflammable and explosive gas he, either which kind of gas he, once insulated gas cylinder
It will cause immeasurable loss and infringement for generation leakage.
At present, insulated gas cylinder is made of liner and overcoat.Either liner, overcoat itself, or liner and overcoat it
Between be to be assembled by welding procedure, and the weld seam formed in welding process be ensure insulated gas cylinder air-tightness extremely
Close important factor.Although constantly lifting welding procedure in the prior art, there are still insulated gas cylinder at present to use one
Air-tightness situation not up to standard after section.
The content of the invention
The object of the present invention is to provide a kind of insulated gas cylinder with excellent service life, which uses with excellent
Service life.
To achieve these goals, the present invention provides a kind of insulated gas cylinder with excellent service life, its feature to exist
In the insulated gas cylinder includes liner and shell, and the casing is arranged on the outside of the liner, between the liner and shell
Palladium oxide compound is provided with the cavity of formation；Wherein, the palladium oxide compound is prepared by the following method and obtains：
1）Palladium oxide, cyclodextrin, water are subjected to gelatinization reaction so that gelatinization system is made；
2）Nickel source, tin source, neodymia, dysprosia, butyl lithium, cetyl trimethylammonium bromide, hydrazine hydrate are added to gelatinization
To carry out hydro-thermal reaction in system, then filter, is dry with obtained solidfied material；
3）By solidfied material ball milling with obtained palladium oxide compound.
In the above-mentioned technical solutions, applicant of the present invention first by studying discovery for a long time：Insulated gas cylinder is being made
The reason for standby initial stage completed often possesses excellent air-tightness, but long-time is not up to standard using the air-tightness of rear insulated gas cylinder
It is to contain hydrogen in the gas in the cavity between liner and overcoat, and hydrogen is often right due to its molecular particle size is small
Weld seam causes to impact, so that weld seam constantly expands, so that insulated gas cylinder does not reach safety requirements.It is basic herein
On, the applicant inventor is prepared using palladium oxide as matrix by above-mentioned three-step approach, and with other metals or metal compound
Thing compound for composite, the compound can effectively absorb hydrogen.Thus, which can be positioned over
In cavity between liner and overcoat, to absorb hydrogen, so as to ensure that insulated gas cylinder has stable air-tightness and service life.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Attached drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the structure diagram of the preferred embodiment of the insulated gas cylinder provided by the invention with excellent service life.
Reference numeral
1st, liner 2, overcoat.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The present invention provides a kind of insulated gas cylinder with excellent service life, it is characterised in that the insulated gas cylinder bag
Liner 1 and shell 2 are included, the shell 2 is sheathed on the outside of the liner 1, the cavity formed between the liner 1 and shell 2
Inside it is provided with palladium oxide compound；Wherein, the palladium oxide compound is prepared by the following method and obtains：
1）Palladium oxide, cyclodextrin, water are subjected to gelatinization reaction so that gelatinization system is made；
2）Nickel source, tin source, neodymia, dysprosia, butyl lithium, cetyl trimethylammonium bromide, hydrazine hydrate are added to gelatinization
To carry out hydro-thermal reaction in system, then filter, is dry with obtained solidfied material；
3）By solidfied material ball milling with obtained palladium oxide compound.
In the step 1 of the present invention）In, the dosage of each material can select in wide scope, but for insulated gas cylinder
With more excellent service life, it is preferable that in step 1）In, palladium oxide, cyclodextrin, the weight ratio of water are 10：4-7：20-30.
In the step 1 of the present invention）In, the dosage of each material can select in wide scope, but for insulated gas cylinder
With more excellent service life, it is preferable that in step 1）In, gelatinization reaction meets the following conditions：Reaction temperature is 50-65 DEG C,
Reaction time is 4-6h.
In the step 1 of the present invention）In, the average grain diameter of palladium oxide can select in wide scope, but for thermal insulation
Gas cylinder has more excellent service life, it is preferable that in step 1）In, the average grain diameter of palladium oxide is 30-50nm.
In the step 2 of the present invention）In, the dosage of each material can select in wide scope, but for insulated gas cylinder
With more excellent service life, it is preferable that in step 2）In, gelatinization system, nickel source, tin source, neodymia, dysprosia, butyl lithium,
Cetyl trimethylammonium bromide, the weight ratio of hydrazine hydrate are 100：8-12：2-5：0.2-0.8：0.3-0.6：0.05-0.15：
2-4：11-16.
In the step 2 of the present invention）In, the condition of hydro-thermal reaction can select in wide scope, but for adiabatic gas
Bottle has more excellent service life, it is preferable that preferably, in step 2）In, hydro-thermal reaction meets the following conditions：In closed ring
Carried out in border, reaction temperature is 140-180 DEG C, reaction time 6-8h.
In the step 2 of the present invention）In, the specific species of nickel source can select in wide scope, but for adiabatic gas
Bottle has more excellent service life, it is preferable that preferably, in step 2）In, nickel source is nickel acetate and/or nickel nitrate.
In the step 2 of the present invention）In, the specific species of tin source can select in wide scope, but for adiabatic gas
Bottle has more excellent service life, it is preferable that preferably, tin source is butter of tin, tributyltin chloride and triphenyl tin chloride
At least one of.
In the step 2 of the present invention）In, dry condition can select in wide scope, but in order to which insulated gas cylinder has
There is more excellent service life, it is preferable that preferably, in step 2）In, drying meets the following conditions：Drying temperature is 100-110
DEG C, drying time 2-3h.
In the step 3 of the present invention）In, the condition of ball milling can select in wide scope, but in order to which insulated gas cylinder has
There is more excellent service life, it is preferable that preferably, in step 3）In, the ball milling meets the following conditions：The matter of big ball and bead
Amount is than being 2：The mass ratio of 0.8-1.2, abrading-ball and material is 20：0.8-1.2, rotating speed 2000-2200rpm, Ball-milling Time are
25-35min。
The present invention will be described in detail by way of examples below.
Preparation example 1
1）By palladium oxide（Average grain diameter is 40nm）, cyclodextrin, water is according to 10：5：25 weight ratio carries out gelatinization reaction（Reaction
Temperature is 55 DEG C, reaction time 5h）Gelatinization system is made；
2）By nickel source（Nickel acetate）, tin source（Butter of tin）, neodymia, dysprosia, butyl lithium, cetyl trimethyl bromination
Ammonium, hydrazine hydrate are added in gelatinization system to carry out hydro-thermal reaction（Carried out in closed environment, reaction temperature is 160 DEG C, instead
It is 7h between seasonable）, then filter, be dry（Drying temperature is 105 DEG C, drying time 2.5h）Solidfied material is made（It is gelatinized body
System, nickel source, tin source, neodymia, dysprosia, butyl lithium, cetyl trimethylammonium bromide, the weight ratio of hydrazine hydrate are 100：
10：3：0.5：0.4：0.09：3：13）；
3）By solidfied material ball milling（The mass ratio of big ball and bead is 2：1, the mass ratio of abrading-ball and material is 20：1, rotating speed is
2100rpm, Ball-milling Time 30min）Palladium oxide compound A1 is made.
Preparation example 2
1）By palladium oxide（Average grain diameter is 30nm）, cyclodextrin, water is according to 10：4：20 weight ratio carries out gelatinization reaction（Reaction
Temperature is 50 DEG C, reaction time 4h）Gelatinization system is made；
2）By nickel source（Nickel nitrate）, tin source（Tributyltin chloride）, neodymia, dysprosia, butyl lithium, cetyl trimethyl bromine
Change ammonium, hydrazine hydrate is added in gelatinization system to carry out hydro-thermal reaction（Being carried out in closed environment, reaction temperature is 140 DEG C,
Reaction time is 6h）, then filter, be dry（Drying temperature is 100 DEG C, drying time 2h）Solidfied material is made（It is gelatinized body
System, nickel source, tin source, neodymia, dysprosia, butyl lithium, cetyl trimethylammonium bromide, the weight ratio of hydrazine hydrate are 100：8：
2：0.2：0.3：0.05：2：11）；
3）By solidfied material ball milling（The mass ratio of big ball and bead is 2：0.8, the mass ratio of abrading-ball and material is 20：0.8, rotating speed
For 2000rpm, Ball-milling Time 25min）Palladium oxide compound A2 is made.
Preparation example 3
1）By palladium oxide（Average grain diameter is 50nm）, cyclodextrin, water is according to 10：7：30 weight ratio carries out gelatinization reaction（Reaction
Temperature is 65 DEG C, reaction time 6h）Gelatinization system is made；
2）By nickel source（Nickel nitrate）, tin source（Triphenyl tin chloride）, neodymia, dysprosia, butyl lithium, cetyl trimethyl bromine
Change ammonium, hydrazine hydrate is added in gelatinization system to carry out hydro-thermal reaction（Being carried out in closed environment, reaction temperature is 180 DEG C,
Reaction time is 8h）, then filter, be dry（Drying temperature is 110 DEG C, drying time 3h）Solidfied material is made（It is gelatinized body
System, nickel source, tin source, neodymia, dysprosia, butyl lithium, cetyl trimethylammonium bromide, the weight ratio of hydrazine hydrate are 100：
12：5：0.8：0.6：0.15：4：16）；
3）By solidfied material ball milling（The mass ratio of big ball and bead is 2：1.2, the mass ratio of abrading-ball and material is 20：1.2, rotating speed
For 2200rpm, Ball-milling Time 35min）Palladium oxide compound A3 is made.
Comparative example 1
Method according to embodiment 1 carries out that palladium oxide compound B1 is made, the difference is that step 1）In be not used cyclodextrin.
Comparative example 2
Method according to embodiment 1 carries out that palladium oxide compound B2 is made, the difference is that step 2）In be not used nickel source.
Comparative example 3
Method according to embodiment 1 carries out that palladium oxide compound B3 is made, the difference is that step 2）In be not used tin source.
Comparative example 4
Method according to embodiment 1 carries out that palladium oxide compound B4 is made, the difference is that step 2）In be not used neodymia.
Comparative example 5
Method according to embodiment 1 carries out that palladium oxide compound B5 is made, the difference is that step 2）In be not used dysprosia.
Comparative example 6
Method according to embodiment 1 carries out that palladium oxide compound B6 is made, the difference is that step 2）In be not used butyl lithium.
Embodiment 1
Above-mentioned 0.3kg palladium oxides compound A1-A3, B1-B6 are placed in the cavity between liner and overcoat to be made respectively
Insulated gas cylinder, while set and do not place palladium oxide compound in the cavity between contrast groups i.e. liner and overcoat；Then GB is passed through
24159-2009 record method to insulated gas cylinder carry out inflation/deflation until insulated gas cylinder air-tightness it is undesirable, finally unite
The access times of insulated gas cylinder are counted, are specifically shown in Table 1.
Table 1
The preferred embodiment of the present invention described in detail above, still, the tool during present invention is not limited to the embodiments described above
Body details, in the range of the technology design of the present invention, can carry out a variety of simple variants, these letters to technical scheme
Monotropic type belongs to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (10)
1. a kind of insulated gas cylinder with excellent service life, it is characterised in that the insulated gas cylinder includes liner（1）And shell
（2）, the shell（2）It is sheathed on the liner（1）Outside, the liner（1）And shell（2）Between set in the cavity that is formed
It is equipped with palladium oxide compound；Wherein, the palladium oxide compound is prepared by the following method and obtains：
1）Palladium oxide, cyclodextrin, water are subjected to gelatinization reaction so that gelatinization system is made；
2）By nickel source, tin source, neodymia, dysprosia, butyl lithium, cetyl trimethylammonium bromide, hydrazine hydrate described in
To carry out hydro-thermal reaction in gelatinization system, then filter, is dry with obtained solidfied material；
3）By the solidfied material ball milling with the obtained palladium oxide compound.
2. insulated gas cylinder according to claim 1, wherein, in step 1）In, the palladium oxide, cyclodextrin, the weight of water
Than for 10：4-7：20-30.
3. insulated gas cylinder according to claim 1, wherein, in step 1）In, the gelatinization reaction meets the following conditions：Instead
It is 50-65 DEG C to answer temperature, reaction time 4-6h.
4. insulated gas cylinder according to claim 1, wherein, in step 1）In, the average grain diameter of the palladium oxide is 30-
50nm。
5. according to the insulated gas cylinder described in any one in claim 1-4, wherein, in step 2）In, the gelatinization system, nickel
Source, tin source, neodymia, dysprosia, butyl lithium, cetyl trimethylammonium bromide, the weight ratio of hydrazine hydrate are 100：8-12：2-
5：0.2-0.8：0.3-0.6：0.05-0.15：2-4：11-16.
6. insulated gas cylinder according to claim 5, wherein, in step 2）In, the hydro-thermal reaction meets the following conditions：
Carried out in closed environment, reaction temperature is 140-180 DEG C, reaction time 6-8h.
7. insulated gas cylinder according to claim 5, wherein, in step 2）In, the nickel source is nickel acetate and/or nitric acid
Nickel.
8. insulated gas cylinder according to claim 5, wherein, the tin source is butter of tin, tributyltin chloride and triphen
At least one of base stannic chloride.
9. insulated gas cylinder according to claim 5, wherein, in step 2）In, the drying meets the following conditions：Dry temperature
Spend for 100-110 DEG C, drying time 2-3h.
10. the insulated gas cylinder according to any one in claim 1-4,6-9, wherein, in step 3）In, the ball milling is expired
Sufficient the following conditions：The mass ratio of big ball and bead is 2：The mass ratio of 0.8-1.2, abrading-ball and material is 20：0.8-1.2, rotating speed
For 2000-2200rpm, Ball-milling Time 25-35min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299700.5A CN108006431A (en) | 2017-12-09 | 2017-12-09 | Insulated gas cylinder with excellent service life |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711299700.5A CN108006431A (en) | 2017-12-09 | 2017-12-09 | Insulated gas cylinder with excellent service life |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108006431A true CN108006431A (en) | 2018-05-08 |
Family
ID=62057768
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711299700.5A Withdrawn CN108006431A (en) | 2017-12-09 | 2017-12-09 | Insulated gas cylinder with excellent service life |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108006431A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3930375A (en) * | 1972-11-27 | 1976-01-06 | Linde Aktiengesellschaft | Storage vessel for liquefied gas |
| CN1659174A (en) * | 2002-06-19 | 2005-08-24 | 栗田工业株式会社 | Method of storing hydrogen, hydrogen inclusion compound and process for producing the same |
| CN101658798A (en) * | 2008-08-29 | 2010-03-03 | 中国石油化工股份有限公司 | Method for modifying titanium silicate molecular sieve material |
| CN105715945A (en) * | 2016-03-14 | 2016-06-29 | 江苏德邦工程有限公司 | High-vacuum insulation low-temperature storage tank and manufacturing method thereof |
-
2017
- 2017-12-09 CN CN201711299700.5A patent/CN108006431A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3930375A (en) * | 1972-11-27 | 1976-01-06 | Linde Aktiengesellschaft | Storage vessel for liquefied gas |
| CN1659174A (en) * | 2002-06-19 | 2005-08-24 | 栗田工业株式会社 | Method of storing hydrogen, hydrogen inclusion compound and process for producing the same |
| CN101658798A (en) * | 2008-08-29 | 2010-03-03 | 中国石油化工股份有限公司 | Method for modifying titanium silicate molecular sieve material |
| CN105715945A (en) * | 2016-03-14 | 2016-06-29 | 江苏德邦工程有限公司 | High-vacuum insulation low-temperature storage tank and manufacturing method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203881112U (en) | Metal powder vacuum sintering furnace | |
| CN208919425U (en) | A kind of high pressure gas cylinder safety relief device | |
| CN107265889A (en) | A kind of vacuum pumping method of vacuum glass | |
| CN108006431A (en) | Insulated gas cylinder with excellent service life | |
| CN107983296A (en) | Insulated gas cylinder palladium oxide compound and preparation method | |
| CN203875338U (en) | Vacuum degreasing sintering furnace | |
| CN207199790U (en) | A kind of lithium battery fire-retarding device | |
| CN207128659U (en) | A kind of safe charging cabin for being equipped with flash absorber | |
| CN107965661A (en) | A kind of high stability liquefied natural gas mounted gas cylinder | |
| CN205538320U (en) | Sampling steel bottle keeps warm | |
| CN107453001A (en) | A kind of lithium battery fire-retarding device | |
| CN204024176U (en) | A kind of phase-change constant-temperature refuge chamber | |
| CN206908991U (en) | Terminal device with fire-proof function | |
| CN108006430A (en) | A kind of automobile-used air tank of liquefied natural gas | |
| CN205828463U (en) | A kind of modern high security lithium ion battery | |
| CN107774098A (en) | A kind of insulated gas cylinder molecular sieves compound material and preparation method | |
| CN104588597B (en) | Safe triethylamine generator | |
| CN203835763U (en) | Explosion-proof axial flow type local fan | |
| CN203192873U (en) | Lithium battery explosion-proof cap | |
| CN207750722U (en) | A kind of anti-overfilling device of big volume automobile natural gas bottle | |
| CN105880547A (en) | Steel ladle with function of nano thermal insulation | |
| CN203047853U (en) | Tank body of anti-explosion liquid tank truck | |
| CN204741036U (en) | Battery flame proof case | |
| CN207538915U (en) | A kind of ternary catalyzing unit heat insulation structural | |
| CN1313780C (en) | Working method for anti-cracking all-glass all-glass vacuum heat collecting tube of solar water heater |
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 | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180508 |