CN114486990A - Freezing point tester for aviation fuel products - Google Patents
Freezing point tester for aviation fuel products Download PDFInfo
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- CN114486990A CN114486990A CN202210338092.9A CN202210338092A CN114486990A CN 114486990 A CN114486990 A CN 114486990A CN 202210338092 A CN202210338092 A CN 202210338092A CN 114486990 A CN114486990 A CN 114486990A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/04—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of melting point; of freezing point; of softening point
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/16—Drying solid materials or objects by processes not involving the application of heat by contact with sorbent bodies, e.g. absorbent mould; by admixture with sorbent materials
Abstract
The invention relates to the technical field of aviation fuel detection, and particularly provides an aviation fuel product freezing point tester, which comprises a stirrer, a thermometer, a double-wall glass tube, a vacuum heat-preservation cup, a tube sleeve and a defogging mechanism, wherein the double-wall glass tube can be inserted into the tube sleeve, the tube sleeve can be placed into the vacuum heat-preservation cup, a heat preservation cavity is formed between the inner wall of the tube sleeve and the outer wall of the double-wall glass tube, the defogging mechanism comprises a brush seat, the brush seat is arranged in the heat preservation cavity, a brush head is fixed on the brush seat, one end of a connecting rod is fixed on a pressure ring, the other end of the connecting rod penetrates through the tube sleeve and then is fixedly connected with the brush seat, a spring is further sleeved on the connecting rod, two ends of the spring are respectively abutted against the pressure ring and the tube sleeve, the double-wall glass tube is wrapped by the tube sleeve and placed into a condensing agent, the double-wall glass tube is cooled, the temperature difference of each part of the double-wall glass tube is reduced, the experimental result is more accurate, and the water vapor and frost on the tube sleeve and the double-wall glass tube are removed by the defogging mechanism, the operator can conveniently observe the crystallization condition of the sample.
Description
Technical Field
The invention relates to the technical field of aviation fuel detection, in particular to an aviation fuel product freezing point tester.
Background
The freezing point of the aviation fuel is one of important indexes for measuring the quality of the aviation fuel, and the freezing point of the aviation fuel is the temperature corresponding to the condition that the aviation fuel is cooled to form solid hydrocarbon crystals under the specified condition, and then the solid hydrocarbon crystals are heated and completely disappear. GB/T2430-2008 aviation Fuel freezing Point test methods for testing the freezing point of aviation fuels are described in detail, in which a sample is first poured into a clean, dry double-walled glass test tube and the double-walled glass test tube is tightly stoppered with a cork with a stirrer, thermometer and moisture-proof tube. The space between the inner tube and the outer tube of the double-wall glass test tube is in a normal pressure state. And then immersing the double-wall glass test tube into a vacuum thermal insulation cup containing a condensing agent, enabling the liquid level of the sample to be always below the liquid level of the condensing agent, continuously stirring the sample, allowing the stirring to be stopped instantly, continuously observing the sample, determining whether hydrocarbon crystallization occurs or not, taking the double-wall glass test tube out of the condensing agent when crystals which can be observed by naked eyes begin to appear in the sample, heating the double-wall glass test tube at room temperature, continuously stirring the double-wall glass test tube, observing the disappearance condition of the solid hydrocarbon crystallization, and determining the corresponding temperature when the solid hydrocarbon crystallization completely disappears from the sample as the freezing point of the sample.
When an operator detects the freezing point of the aviation fuel by using the method and the device, when the crystallization is generated and needs to be returned to the temperature, the pipe wall of the double-wall glass pipe can frost, the condition of the crystal is inconvenient to observe, the work of temperature measurement, stirring, crystal observation and the like needs to be carried out simultaneously, the double-wall glass pipe needs to be taken out of the condensing agent while stirring, and the operation process is very complicated.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: in order to solve the problem that the double-wall glass tube is inconvenient to operate and observe when the freezing point experiment of the aviation fuel product is carried out, the invention provides the aviation fuel product freezing point tester to solve the problem.
The technical scheme adopted by the invention for solving the technical problems is as follows: an aircraft fuel product freezing point tester comprises a stirrer, a thermometer, a double-wall glass tube for containing a sample and a vacuum heat-preserving cup for containing a condensing agent, wherein the vacuum heat-preserving cup is made of a transparent material, a stirring head of the stirrer and a temperature measuring end of the thermometer are inserted into the double-wall glass tube, the vacuum heat-preserving cup also comprises a tube sleeve and a defogging mechanism, the double-wall glass tube can be inserted into the tube sleeve, the tube sleeve can be placed into the vacuum heat-preserving cup, a heat preserving cavity is formed between the inner wall of the tube sleeve and the outer wall of the double-wall glass tube, the defogging mechanism comprises a pressing ring, a brush head, a brush seat and a connecting rod, the brush seat is arranged in the heat preserving cavity, the brush head is fixed on the brush seat, the brush head is used for cleaning the outer wall of the double-wall glass tube and the inner wall of the tube sleeve, and the connecting rod is uniformly arranged in the circumferential direction of the pressing ring, one end of the connecting rod is fixed on the pressing ring, the other end of the connecting rod penetrates through the pipe sleeve and then fixedly connected with the brush holder, the connecting rod is connected with the pipe sleeve in a sliding mode, a spring is further sleeved on the connecting rod, and the two ends of the spring are respectively abutted to the pressing ring and the pipe sleeve.
Preferably, the pipe sleeve comprises a top cover, a bottom cover, a glass tube, an air inlet pipe and an air outlet pipe, the top cover and the bottom cover are fixed at two ends of the glass tube, the connecting rod penetrates through the top cover and is in sliding connection with the top cover, two ends of the spring are respectively abutted to the top cover and the pressing ring, the air inlet pipe penetrates through the bottom cover and is communicated with the heat preservation cavity, the air outlet pipe penetrates through the top cover and is communicated with the heat preservation cavity, a test tube opening is formed in the position, close to the center, of the top cover, and the double-wall glass tube can be inserted into the test tube opening.
Preferably, the inner ring of the test tube opening is further provided with an anti-slip sleeve, and after the double-wall glass tube is inserted into the test tube opening, the inner wall of the anti-slip sleeve is abutted to the outer wall of the double-wall glass tube.
Preferably, the double-walled glass tube further comprises a tube plug, a drying tube is arranged on the tube plug, the drying tube penetrates through the tube plug, and a stirring rod of the stirrer penetrates through the drying tube and is connected with a stirring head of the stirrer.
Preferably, the air inlet pipe is provided with a continuous bending section, the continuous bending section is positioned in the vacuum heat-preserving cup, and the continuous bending section can be completely immersed in the condensing agent.
Preferably, the brush head is a sponge brush head, the brush head and the brush seat are both circular rings, the brush head is fixedly connected with the brush seat, the diameter of the inner wall of the brush seat is larger than that of the inner wall of the brush head, and the diameter of the outer wall of the brush seat is smaller than that of the outer wall of the brush head.
Preferably, the glass cylinder is inserted into the top cover and the bottom cover, the top cover and the bottom cover are provided with hoops, after the top cover and the bottom cover are inserted into two ends of the glass cylinder, the hoops are abutted against the outer wall of the glass cylinder, and a sealing ring is further arranged between the hoops and the glass cylinder.
Preferably, the vacuum insulation cup further comprises a lifting base, the lifting base comprises a base body, a guide rod, a supporting plate, a top plate and a locking mechanism, the guide rod is vertically fixed between the base body and the top plate, the top cover is fixed on the top plate, the supporting plate is used for supporting the vacuum insulation cup, the supporting plate is slidably mounted on the guide rod, and the locking mechanism is used for locking the supporting plate on the guide rod.
Preferably, the locking mechanism comprises a hand wheel, a screw rod and a top block, the screw rod is rotatably installed on the lower surface of the supporting plate, the hand wheel is fixed at one end of the screw rod, the top block is in threaded fit with the screw rod, the top block is in sliding fit with the supporting plate, and after the screw rod is rotated clockwise, the top block can be moved to a state abutted to the guide rod.
The double-wall glass tube cooling device has the beneficial effects that firstly, the tube sleeve is arranged, the heat preservation cavity is formed in the tube sleeve, the double-wall glass tube is wrapped by the tube sleeve and is placed in condensing agent for cooling, the tube sleeve is provided with the air inlet tube and the air outlet tube, the heat preservation cavity is cooled after the air in the air inlet tube is cooled, and then the double-wall glass tube is cooled, so that the temperature difference of each part of the double-wall glass tube is reduced, and the experimental result is more accurate.
And secondly, a defogging mechanism is arranged, and the defogging mechanism is used for removing water vapor and frosting on the pipe sleeve and the double-wall glass pipe, so that an operator can observe the crystallization condition of the sample conveniently.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic view of the overall structure of an aviation fuel freezing point tester of the present invention;
FIG. 2 is a schematic view of the operating condition of an aviation fuel freezing point tester of the present invention;
FIG. 3 is a schematic structural view of a defogging mechanism of the aircraft fuel freezing point tester according to the invention;
FIG. 4 is a schematic view of the operation of a defogging mechanism of the aviation fuel product freezing point tester according to the present invention;
FIG. 5 is an exploded view of a tube sleeve of an aviation fuel product freezing point tester of the present invention;
FIG. 6 is a cross-sectional view of a tube sleeve of an aviation fuel product freeze point tester of the present invention;
fig. 7 is a schematic structural diagram of a lifting base of the aviation fuel freezing point tester.
Reference numerals: 1. a stirring head; 2. a thermometer; 3. a double-walled glass tube; 4. a vacuum cup; 5. pipe sleeve; 6. a demisting mechanism; 7. a heat preservation cavity; 8. pressing a ring; 9. a brush head; 10. a brush holder; 11. a connecting rod; 12. a spring; 13. a top cover; 14. a bottom cover; 15. a glass cylinder; 16. an air inlet pipe; 17. an air outlet pipe; 18. a test tube opening; 19. an anti-slip sleeve; 20. a pipe plug; 21. a drying tube; 22. a stirring rod; 23. continuously bending the sections; 24. a hoop; 25. a lifting base; 26. a base body; 27. a guide bar; 28. a support plate; 29. a top plate; 30. a locking mechanism; 31. a hand wheel; 32. a screw; 33. and (7) a top block.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships based on the orientations and positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be considered as limiting the present invention.
Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.
As shown in fig. 1 to 7, the present invention provides an embodiment of an aircraft fuel product freezing point tester, which includes a stirrer, a thermometer 2, a double-walled glass tube 3 for containing a sample, and a vacuum cup 4 for containing a condensing agent, where the vacuum cup 4 is made of a transparent material, so as to facilitate observation of crystallization conditions of an aircraft fuel sample, a stirring head 1 of the stirrer and a temperature measuring end of the thermometer 2 are inserted into the double-walled glass tube 3, the sample is continuously stirred by the stirring head 1 of the stirrer, so as to meet experimental requirements, and the temperature of the sample is measured by the thermometer 2, so as to facilitate recording of the temperature during crystallization by an operator, the double-walled glass tube 3 further includes a tube plug 20, the tube plug 20 is provided with a drying tube 21, the drying tube 21 penetrates through the tube plug 20, a stirring rod 22 of the stirrer penetrates through the drying tube 21 and then is connected to the stirring head 1 of the stirrer, that is, when the stirring rod 22 is rotated, the drying tube 21 is arranged at the gap between the stirring rod 22 and the tube plug 20, so that the air passing through the drying tube 21 can be dehumidified and dried, the moist air is prevented from entering the double-wall glass tube 3 from the gap around the stirring rod 22, the phenomenon that water vapor and frost are condensed in the double-wall glass tube 3 to obstruct the view is avoided on one hand, the phenomenon that the water vapor and the frost are mixed with the sample to influence the purity of the sample is also avoided on the other hand, and the error of an experimental result is reduced, the vacuum heat insulation cup further comprises the tube sleeve 5 and the defogging mechanism 6, the double-wall glass tube 3 can be inserted into the tube sleeve 5, the tube sleeve 5 can be placed into the vacuum heat insulation cup 4, namely after the outer wall of the double-wall glass tube 3 is wrapped by the tube sleeve 5, the tube sleeve 5 and the double-wall glass tube 3 are integrally placed into the vacuum heat insulation cup 4, the heat insulation cavity 7 is formed between the inner wall of the tube sleeve 5 and the outer wall of the double-wall glass tube 3, and the temperature difference among all parts in the heat insulation cavity 7 is smaller, the demisting mechanism 6 comprises a compression ring 8, a brush head 9, a brush seat 10 and a connecting rod 11, the brush seat 10 is arranged in the heat preservation cavity 7, the brush head 9 and the brush seat 10 are both in a circular ring shape, the brush head 9 is fixedly connected with the brush seat 10, the diameter of the inner wall of the brush seat 10 is larger than that of the inner wall of the brush head 9, the diameter of the outer wall of the brush seat 10 is smaller than that of the outer wall of the brush head 9, after the double-wall glass tube 3 is inserted into the tube sleeve 5, the inner wall of the brush head 9 is abutted against the outer wall of the double-wall glass tube 3, the outer wall of the brush head 9 is abutted against the inner wall of the tube sleeve 5, the outer wall of the double-wall glass tube 3 and the inner wall of the tube sleeve 5 are cleaned by moving the brush head 9 up and down, the brush head 9 is a sponge brush head, when the brush head 9 made of sponge material is used for cleaning the double-wall glass tube 3 and the tube sleeve 5, the double-wall glass tube 3 and the tube sleeve 5 can be prevented from being scratched, moisture can be absorbed in the process of cleaning water mist by sponge, the moisture is prevented from flowing along the double-wall glass tube 3 in the cleaning process, a plurality of connecting rods 11 are uniformly arranged along the circumferential direction of a pressing ring 8, one ends of the connecting rods 11 are fixed on the pressing ring 8, the other ends of the connecting rods 11 penetrate through the tube sleeve 5 and then are fixedly connected with a brush holder 10, the connecting rods 11 are in sliding connection with the tube sleeve 5, springs 12 are further sleeved on the connecting rods 11, two ends of each spring 12 are respectively abutted against the pressing ring 8 and the tube sleeve 5, when the water mist on the double-wall glass tube 3 and the tube sleeve 5 needs to be removed, the springs 12 are compressed by pressing the pressing ring 8, meanwhile, the connecting rods 11 push the brush holder 10 to move along the inner wall of the tube sleeve 5 to drive the brush head 9 to move to remove the water mist, then the pressing ring 8 is loosened, the springs 12 reset the connecting rods 11 drive the brush holder 10 to reversely move to drive the brush holder 10 to reset, and the brush holder 10 performs secondary cleaning on the double-wall glass tube 3 and the tube sleeve 5 in the resetting process, the water mist removing effect is improved, and the pressing ring 8 and the spring 12 are arranged, so that an operator only needs to simply press the double-wall glass tube 3 and the tube sleeve 5 to clean the double-wall glass tube 3 and the tube sleeve 5 for multiple times, and the operation steps are simplified.
The pipe sleeve 5 comprises a top cover 13, a bottom cover 14, a glass cylinder 15, an air inlet pipe 16 and an air outlet pipe 17, the top cover 13 and the bottom cover 14 are fixed at two ends of the glass cylinder 15, the glass cylinder 15 is inserted with the top cover 13 and the bottom cover 14, when the inner wall of the glass cylinder 15 is dirty, the inserted structure enables an operator to disassemble the glass cylinder 15 and then clean or replace the glass cylinder, the top cover 13 and the bottom cover 14 are provided with hoop rings 24, when the top cover 13 and the bottom cover 14 are inserted at two ends of the glass cylinder 15, the hoop rings 24 are abutted with the outer wall of the glass cylinder 15, the hoop rings 24 increase the contact area of the outer wall of the glass cylinder 15 and the top cover 13 and the bottom cover 14, so that the three are firmer and less prone to shake after being inserted, a sealing ring is also arranged between the hoop rings 24 and the glass cylinder 15, the sealing performance of two ends of the glass cylinder 15 is effectively improved, the condensing agent is prevented from entering the heat preservation cavity 7 from a seam, and the connecting rod 11 penetrates through the top cover 13 and is connected with the top cover 13 in a sliding way, the two ends of the spring 12 are respectively abutted against the top cover 13 and the pressing ring 8, the air inlet pipe 16 is communicated with the heat preservation cavity 7 after penetrating through the bottom cover 14, the air inlet pipe 16 is provided with a continuous bending section 23, the continuous bending section 23 is positioned in the vacuum heat preservation cup 4, the continuous bending section 23 can be completely immersed in a condensing agent, the continuous bending section 23 enables gas to be fully cooled when entering the heat preservation cavity 7 through the air inlet pipe 16, the temperature of the gas is consistent with the condensing agent, the air outlet pipe 17 is communicated with the heat preservation cavity 7 after penetrating through the top cover 13, the gas is convenient to be discharged from the air outlet pipe 17, the position of the top cover 13 close to the center is provided with the test tube opening 18, the double-wall glass tube 3 can be inserted into the test tube opening 18, the inner ring of the test tube opening 18 is further provided with the anti-skid sleeve 19, after the double-wall glass tube 3 is inserted into the test tube opening 18, the inner wall of the anti-skid sleeve 19 is abutted against the outer wall of the double-wall glass tube 3, on one hand, the double-wall glass tube 3 can be firmly fixed at the test tube opening 18, on the other hand, the anti-slip sleeve 19 can also reduce the gap between the test tube port 18 and the double-wall glass tube 3, so that the sealing effect is achieved, and the external air is prevented from entering the heat preservation cavity 7 from the test tube port 18.
The vacuum cup comprises a base body 26, a guide rod 27, a supporting plate 28, a top plate 29 and a locking mechanism 30, wherein the guide rod 27 is vertically fixed between the base body 26 and the top plate 29, the top cover 13 is fixed on the top plate 29, namely the pipe sleeve 5 is fixed on the top plate 29, the supporting plate 28 is used for supporting the vacuum cup 4, the supporting plate 28 is slidably arranged on the guide rod 27, and the locking mechanism 30 is used for locking the supporting plate 28 on the guide rod 27; when the freezing point of a test sample is tested, firstly, a condensing agent is placed in a vacuum heat preservation cup 4, the vacuum heat preservation cup 4 is placed on a supporting plate 28, the test sample is placed in a double-wall glass tube 3, the double-wall glass tube 3 is inserted into a tube sleeve 5, then an operator lifts the supporting plate 28 to enable the vacuum heat preservation cup 4 to move towards the tube sleeve 5, then the supporting plate 28 is locked through a locking mechanism 30, the tube sleeve 5 and an air inlet tube 16 are immersed into the condensing agent, then air is introduced into the air inlet tube 16, the air is cooled and enters a heat preservation cavity 7 to cool the double-wall glass tube 3 and the test sample in the double-wall glass tube 3, meanwhile, a stirrer stirs the test sample through a stirring head 1, when the operator observes crystals, the locking mechanism 30 is loosened to put down the supporting plate 28, the tube sleeve 5 and the air inlet tube 16 are separated from the condensing agent, the stirring head 1 continues to stir the test sample, and further enables the double-wall glass tube 3 to be capable of heating at room temperature, and the operator can conveniently record the experimental result.
Locking mechanism 30 includes hand wheel 31, screw rod 32 and kicking block 33, and the rotatable lower surface of installing at layer board 28 of screw rod 32, and hand wheel 31 is fixed in the one end of screw rod 32, and kicking block 33 and screw rod 32 screw-thread fit, kicking block 33 and layer board 28 sliding fit after clockwise rotation screw rod 32, can make kicking block 33 remove to the state with guide arm 27 butt.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, a schematic representation of terms does not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (9)
1. The utility model provides an aviation fuel product freezing point tester, includes agitator, thermometer (2), is used for holding double-walled glass pipe (3) of sample and is used for holding vacuum thermos cup (4) of condensing agent, vacuum thermos cup (4) are transparent material, insert the temperature measurement end of stirring head (1) and thermometer (2) of agitator in double-walled glass pipe (3), its characterized in that: the vacuum heat preservation cup is characterized by further comprising a pipe sleeve (5) and a defogging mechanism (6), wherein the double-wall glass pipe (3) can be inserted into the pipe sleeve (5), the pipe sleeve (5) can be placed into the vacuum heat preservation cup (4), a heat preservation cavity (7) is formed between the inner wall of the pipe sleeve (5) and the outer wall of the double-wall glass pipe (3), the defogging mechanism (6) comprises a pressure ring (8), a brush head (9), a brush seat (10) and a connecting rod (11), the brush seat (10) is arranged in the heat preservation cavity (7), the brush head (9) is fixed on the brush seat (10), the brush head (9) is used for cleaning the outer wall of the double-wall glass pipe (3) and the inner wall of the pipe sleeve (5), the connecting rod (11) is uniformly arranged in a plurality along the circumferential direction of the pressure ring (8), one end of the connecting rod (11) is fixed on the pressure ring (8), the other end of connecting rod (11) passes behind pipe box (5) with brush holder (10) fixed connection, connecting rod (11) with pipe box (5) sliding connection, still the cover is equipped with spring (12) on connecting rod (11), spring (12) both ends respectively with clamping ring (8) with pipe box (5) butt.
2. An aviation fuel product freezing point tester as claimed in claim 1, wherein: the pipe sleeve (5) comprises a top cover (13), a bottom cover (14), a glass cylinder (15), an air inlet pipe (16) and an air outlet pipe (17), the top cover (13) and the bottom cover (14) are fixed at two ends of the glass cylinder (15), the connecting rod (11) penetrates through the top cover (13) and is in sliding connection with the top cover (13), two ends of the spring (12) are respectively abutted to the top cover (13) and the pressing ring (8), the air inlet pipe (16) penetrates through the bottom cover (14) and then is communicated with the heat preservation cavity (7), the air outlet pipe (17) penetrates through the top cover (13) and then is communicated with the heat preservation cavity (7), a test pipe opening (18) is formed in the position, close to the center, of the top cover (13), and the double-wall glass pipe (3) can be inserted into the test pipe opening (18).
3. An aviation fuel product freezing point tester as claimed in claim 2, wherein: the inner ring of the test tube opening (18) is also provided with an anti-skidding sleeve (19), and when the double-wall glass tube (3) is inserted into the test tube opening (18), the inner wall of the anti-skidding sleeve (19) is abutted to the outer wall of the double-wall glass tube (3).
4. An aviation fuel product freezing point tester as claimed in claim 3, wherein: the double-wall glass tube (3) further comprises a tube plug (20), a drying tube (21) is arranged on the tube plug (20), the drying tube (21) penetrates through the tube plug (20), and a stirring rod (22) of the stirrer penetrates through the drying tube (21) and then is connected with a stirring head (1) of the stirrer.
5. An aviation fuel product freezing point tester as claimed in claim 4, wherein: the air inlet pipe (16) is provided with a continuous bending section (23), the continuous bending section (23) is located in the vacuum heat-preserving cup (4), and the continuous bending section (23) can be completely immersed in the condensing agent.
6. An aviation fuel product freezing point tester as claimed in claim 1, wherein: brush head (9) adopt the sponge brush head, brush head (9) with brush holder (10) are the ring shape, brush head (9) with brush holder (10) fixed connection, the inner wall diameter of brush holder (10) is greater than the inner wall diameter of brush head (9), the outer wall diameter of brush holder (10) is less than the outer wall diameter of brush head (9).
7. An aviation fuel product freezing point tester as claimed in claim 2, wherein: the glass cylinder (15) is inserted into the top cover (13) and the bottom cover (14), the top cover (13) and the bottom cover (14) are provided with hoop rings (24), after the top cover (13) and the bottom cover (14) are inserted into two ends of the glass cylinder (15), the hoop rings (24) are abutted to the outer wall of the glass cylinder (15), and a sealing ring is arranged between the hoop rings (24) and the glass cylinder (15).
8. An aviation fuel product freezing point tester as claimed in claim 7, wherein: still include lift base (25), lift base (25) include pedestal (26), guide arm (27), layer board (28), roof (29) and locking mechanism (30), guide arm (27) vertical fixation be in pedestal (26) with between roof (29), top cap (13) are fixed on roof (29), layer board (28) are used for the bearing vacuum thermos cup (4), layer board (28) slidable mounting be in on guide arm (27), locking mechanism (30) are used for with layer board (28) are locked on guide arm (27).
9. An aviation fuel product freeze point tester as claimed in claim 8, wherein: locking mechanism (30) include hand wheel (31), screw rod (32) and kicking block (33), the rotatable installation of screw rod (32) the lower surface of layer board (28), hand wheel (31) are fixed the one end of screw rod (32), kicking block (33) with screw rod (32) screw-thread fit, kicking block (33) with layer board (28) sliding fit, when clockwise rotation behind screw rod (32), can make kicking block (33) move to with the state of guide arm (27) butt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210338092.9A CN114486990A (en) | 2022-04-01 | 2022-04-01 | Freezing point tester for aviation fuel products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210338092.9A CN114486990A (en) | 2022-04-01 | 2022-04-01 | Freezing point tester for aviation fuel products |
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| CN114486990A true CN114486990A (en) | 2022-05-13 |
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| CN202210338092.9A Pending CN114486990A (en) | 2022-04-01 | 2022-04-01 | Freezing point tester for aviation fuel products |
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