DE749933C - Dragonfly whose fluid container is composed of separate parts and sealed using a special sealing material - Google Patents
Dragonfly whose fluid container is composed of separate parts and sealed using a special sealing materialInfo
- Publication number
- DE749933C DE749933C DED86448D DED0086448D DE749933C DE 749933 C DE749933 C DE 749933C DE D86448 D DED86448 D DE D86448D DE D0086448 D DED0086448 D DE D0086448D DE 749933 C DE749933 C DE 749933C
- Authority
- DE
- Germany
- Prior art keywords
- dragonfly
- sealing material
- plasticizer
- liquid
- sealed
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
- G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
- G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble
- G01C9/36—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble of the spherical type, i.e. for indicating the level in all directions
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
Libelle, deren Flüssigkeitsbehälter aus getrennten Teilen zusammengesetzt und unter Verwendung eines besonderen Dichtungsmaterials abgedichtet ist Bei Libellen, deren Flüssigkeitsbehälter aus getrennten Teilen zusammengesetzt und unter Verwendung eines besonderen, einen Weichmacher enthaltenden Dichtungsmaterials abgedichtet ist, zeigt sich vielfach mit der Zeit eine Trtibung der Libellenflüssigkeit.Dragonfly whose liquid container is composed of separate parts and is sealed using a special sealing material. their liquid container assembled from separate parts and using a special sealing material containing a plasticizer there is often a drifting of the dragonfly fluid over time.
Um diesem überstand zu begegnen, wird effindungsgemäß als Weichmacher des Dichtungsmaterials ein Stoff gewäbh, der bei den bei Benutzung der Libelle auftretenden Temperaturen nicht erstarrt und mit der Libellenflüssigkeit, vorzugsweise vollkommen, mischbar ist. Weichmacher sind chemische Zus,ätze zu den als Dichtung benutzten Werkstoffen, deren Aufgabe vornehmlich darin besteht, die Plastizität bzw. Elastizität dieser Stoffe auch bei verhältnismäßig niedrigen Temperaturen, bei denen sie erhärten und spröde würden, aufrechtzuerhalten. Es hat sich ergeben, daß die Trübung der Libelienfiüssigkeit durch Ausscheidung in die Flüssigkeit üblergegangener, in ihr schwer löslicher Weichmacherteile besonders bei tiefen Temperaturen hervorgerufen wird. Setzen sich Teilchen solcher Ausscheidungen an der Blasenlauffläche fest, so behindern sie sogar erheblich die Bewegung der Libellenblase. Diese Erscheinungen werden durch die erfindungsgemäße Maßnahme unmöglich gemacht. Besonders vorteilhaft ist es, wenn, wie weiterhin vorgeschlagen wird, die Libelienllüssigkeit und der Weichmacher aus dem gleichen Stoff bestehen. In order to counteract this supernatant, it is used as a plasticizer the sealing material Gewäbh a substance that occurs when using the dragonfly Temperatures not solidified and with the dragonfly liquid, preferably completely, is miscible. Plasticizers are chemical additives to those used as seals Materials, the main task of which is to improve their plasticity or elasticity these substances even at relatively low temperatures at which they harden and would become brittle to maintain. It has been found that the cloudiness of the Love fluid by excretion in the fluid which has passed over into it poorly soluble plasticizer parts, especially at low temperatures will. If particles of such excretions stick to the surface of the bladder, they even significantly hinder the movement of the dragonfly's bubble. These appearances are made impossible by the measure according to the invention. Particularly beneficial it is when, as is further proposed, the love liquid and the Plasticizers are made from the same substance.
Wird als Libellenflüssigkeit (deren Wahl durch die Anforderungen an die Viskosität bei den verschiedenen Temperaturen, Siedepunkt, Erstarrtingspunkt usw. eingeengt wird, vor allem dann, wenn noch die weitere Forderung besteht, daß die Blasengröße z. B. durch Verdampfen eines Teiles der Libellenflüssigkeit veränderbar sein soll) ein Benzinkohknwasserstoff, insbesondere Hexan, vertvendet, so ist als Weichmacher für das z. B. aus einem Mischpolymerisat aus Butadien und Acryjsäurenitril bestehenden Dichtungsmaterial vorzugsweise Dibutylphthalat vorgesehæn, das die genannten Bedingungen erfüllt. Used as a dragonfly liquid (the choice of which depends on the requirements the viscosity at the various temperatures, boiling point, freezing point etc. is narrowed, especially if there is still the further requirement that the bubble size z. B. changeable by evaporation of part of the dragonfly liquid should be) a petrol hydrocarbon, especially hexane, is used, so is used as a plasticizer for the z. B. from a copolymer of butadiene and Acryjsäurenitril existing sealing material, preferably dibutyl phthalate, which contains the aforementioned Conditions met.
Gleichzeitig als Weicllmacher und Libellenflüssigkeit ist Dekahydronaphthalin (Dekalin) insbesondere für Libellen, die stark unterschiedlichen Temperaturen ausgesetzt werden, gut geeignet.Decahydronaphthalene is also used as a Weicllmacher and dragonfly fluid (Decalin) especially for dragonflies that are exposed to very different temperatures be well suited.
Claims (4)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED86448D DE749933C (en) | 1941-11-29 | 1941-11-29 | Dragonfly whose fluid container is composed of separate parts and sealed using a special sealing material |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DED86448D DE749933C (en) | 1941-11-29 | 1941-11-29 | Dragonfly whose fluid container is composed of separate parts and sealed using a special sealing material |
Publications (1)
Publication Number | Publication Date |
---|---|
DE749933C true DE749933C (en) | 1944-12-11 |
Family
ID=7064365
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DED86448D Expired DE749933C (en) | 1941-11-29 | 1941-11-29 | Dragonfly whose fluid container is composed of separate parts and sealed using a special sealing material |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE749933C (en) |
-
1941
- 1941-11-29 DE DED86448D patent/DE749933C/en not_active Expired
Non-Patent Citations (1)
Title |
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None * |
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