CN218067719U - Liquid fuel low-temperature performance testing device and equipment - Google Patents
Liquid fuel low-temperature performance testing device and equipment Download PDFInfo
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- CN218067719U CN218067719U CN202221245599.1U CN202221245599U CN218067719U CN 218067719 U CN218067719 U CN 218067719U CN 202221245599 U CN202221245599 U CN 202221245599U CN 218067719 U CN218067719 U CN 218067719U
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Abstract
The utility model provides a liquid fuel low temperature capability test device and equipment belongs to liquid fuel capability test technical field. The device comprises a heat exchange tube, a liquid fuel container and a temperature detection piece; the heat exchange tube comprises an inner tube and an outer tube, the inner tube is arranged in the outer tube, the top of the inner tube is hermetically connected with the top of the outer tube, and the side part and the bottom of the inner tube and the side part and the bottom of the outer tube are arranged at intervals to form a heat exchange cavity; the outer pipe is provided with a medium inlet and a medium outlet which are communicated with the heat exchange cavity; at least a portion of the liquid fuel containment vessel extends into the inner tube; the temperature detection member is used for detecting the temperature of the liquid fuel to be measured contained in the liquid fuel container. The testing device has lower cost and can meet the requirements of various low-temperature performance tests of liquid fuel.
Description
Technical Field
The utility model relates to a liquid fuel capability test technical field particularly, relates to a liquid fuel low temperature capability test device and equipment.
Background
Each fuel should be guaranteed to have proper fluidity under the low temperature conditions used so that smooth fuel supply can be realized in the engine without failure. If the low temperature fluidity of the fuel is poor, or hydrocarbons and ice crystal solids appear at low temperatures, the fuel supply system can be blocked, and the operation can be affected. Meanwhile, oil with poor low-temperature fluidity also brings great difficulty to oil loading and unloading operation, which is particularly important for military oil, especially for oil for battle equipment. For this reason, the condensation point (or crystallization point) and low temperature viscosity of jet fuel, diesel fuel, and boiler fuel oil are generally strictly regulated.
The low temperature properties of aviation gasoline are indicated by the crystallization point. The low temperature properties of jet fuels are generally expressed in terms of the crystallization or freezing point, while also requiring the measurement of viscosity at low temperatures. The low temperature of diesel oil is expressed by cloud point, freezing point and cold filter plugging point, and is also expressed by pour point abroad. Boiler fuel oil is heavy in fraction and dark in color, and generally only the condensation point can be measured.
At present, in the research and development work of hydrocarbon fuel, various liquid fuels such as jet fuel, rocket fuel, gas and diesel oil need to be tested for low-temperature flow performance, a plurality of corresponding special testing instruments such as a crystallization point/freezing point tester, a condensation point tester, a cold filter plugging point tester and the like need to be purchased, the price on the market is from thousands of yuan to tens of thousands of yuan, and a large amount of expenditure is required to be invested.
In view of this, the present application is specifically proposed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a liquid fuel low temperature capability test device and equipment to solve above-mentioned technical problem.
The utility model discloses can realize like this:
in a first aspect, the present invention provides a liquid fuel low temperature performance testing apparatus, which includes a heat exchange tube, a liquid fuel container and a temperature detecting member;
the heat exchange tube comprises an inner tube and an outer tube, the inner tube is arranged in the outer tube, the top of the inner tube is hermetically connected with the top of the outer tube, and the side part and the bottom of the inner tube and the side part and the bottom of the outer tube are arranged at intervals to form a heat exchange cavity; the outer pipe is provided with a medium inlet and a medium outlet which are communicated with the heat exchange cavity;
at least a portion of the liquid fuel carrying container extends into the inner tube;
the temperature detecting member is used for detecting the temperature of the liquid fuel to be measured contained in the liquid fuel container.
In an alternative embodiment, the media inlet is located at the bottom of the outer tube and the media inlet is located at the top of the outer tube.
In an alternative embodiment, the heat exchange tube is a double glass sleeve.
In alternative embodiments, the distance between the outer wall of the inner tube and the inner wall of the outer tube is 10-20mm, and/or the distance between the inner wall of the inner tube and the outer wall of the liquid fuel containment vessel is 10-15mm.
In an alternative embodiment, the liquid fuel low temperature performance testing device further comprises a heat insulation fixing piece;
the heat insulation fixing piece comprises a gasket; the gasket is arranged in the inner tube, and the bottom of the liquid fuel container is abutted against the gasket.
In an alternative embodiment, the heat insulating fixture further comprises a gasket disposed about the outer wall of the liquid fuel containment vessel and abutting the inner wall of the top region of the inner tube.
In an alternative embodiment, the liquid fuel low-temperature performance testing device further comprises a plug body, and the plug body is arranged at the top of the liquid fuel container to close the top opening of the liquid fuel container.
In an alternative embodiment, the temperature detecting member is a thermometer, the plug body is provided with a first through hole, and a measuring end of the thermometer passes through the first through hole and extends into the liquid fuel container for measuring the temperature of the liquid fuel to be measured in the liquid fuel container.
In an alternative embodiment, the liquid fuel low temperature performance testing apparatus further comprises a filter assembly;
the filter assembly comprises a vacuum pump, a filter head and a pipette;
the plug body is provided with a second through hole, one end of the pipette penetrates through the second through hole and extends into the liquid fuel container, the filter head is arranged at the end part of one end of the pipette extending into the liquid fuel container, and one end of the pipette, which is not provided with the filter head, is connected with the vacuum pump;
the pipette is provided with graduations.
In a second aspect, the present invention provides a liquid fuel low temperature performance testing apparatus, comprising a circulating oil bath instrument and the liquid fuel low temperature performance testing apparatus of any one of the foregoing embodiments;
the circulating oil bath instrument comprises a circulating oil bath body, a medium output pipe and a medium input pipe;
the two ends of the medium input pipe are respectively connected with the medium outlet and the circulating oil bath body, and the two ends of the medium output pipe are respectively connected with the medium inlet and the circulating oil bath body.
The beneficial effects of the utility model include:
the utility model provides a liquid fuel low temperature capability test device simple structure, small in size, portable can be fit for multiple low temperature capability test of multiple fuel liquid (like condensation point, cloud point and freezing point etc.), and test process convenient and fast, the test result is reliable credible, is particularly suitable for the sample test in laboratory research and the industrial production.
Compared with the cost of the commercially available equipment, the liquid fuel low-temperature performance testing device has low cost and good economic benefit.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a liquid fuel low-temperature performance testing device for testing cloud point, freezing point and condensation point provided by the present invention;
fig. 2 is a schematic structural diagram of a liquid fuel low-temperature performance testing device for testing cloud point, freezing point, condensation point and cold filter plugging point provided by the present invention;
FIG. 3 is a diagram of a test result of a cold filter plugging point provided by an application example of the present invention;
fig. 4 is a condensation point test result diagram provided by the application example of the present invention.
Icon: 1-a heat exchange tube; 11-an inner tube; 12-an outer tube; 13-a heat exchange cavity; 14-a media inlet; 15-a medium outlet; 2-a liquid fuel container; 3-temperature detection member; 41-a gasket; 42-a gasket; 5-a plug body; 51-a first via; 52-second via; 61-a vacuum pump; 62-a filter head; 63-a pipette; 7-circulating oil bath body; 71-a medium outlet pipe; 72-media input pipe.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, the description is only for convenience of description and simplification, but the indication or suggestion that the device or element to be referred must have a specific position, be constructed and operated in a specific position, and thus, cannot be understood as a limitation of the present invention. Furthermore, the appearances of the terms "first," "second," "third," and the like, if any, are only used to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Examples
Referring to fig. 1, the present embodiment provides a device for testing low-temperature performance of liquid fuel, which includes a heat exchange tube 1, a liquid fuel container 2 and a temperature detector 3;
the heat exchange tube 1 comprises an inner tube 11 and an outer tube 12, wherein the inner tube 11 is arranged in the outer tube 12, the top of the inner tube 11 is hermetically connected with the top of the outer tube 12, and the side and the bottom of the inner tube 11 and the side and the bottom of the outer tube 12 are arranged at intervals to form a heat exchange cavity 13; the outer tube 12 is provided with a medium inlet 14 and a medium outlet 15 which are communicated with the heat exchange cavity 13;
at least a portion of liquid fuel container 2 extends into inner tube 11;
the temperature detection element 3 is for detecting the temperature of the liquid fuel to be measured contained in the liquid fuel container 2.
In some embodiments, the heat exchange tube 1 is a double glass sleeve. The parts can be purchased directly or made by the user.
The homemade method can be exemplarily referred to as: the method comprises the steps of taking a GG-17 glass tube as a raw material, sealing a section of phi 60mm and 220mm long glass tube, expanding an upper port, embedding a section of phi 80mm and 260mm long glass tube, fusing and sealing the upper end expanded port of the phi 60mm glass tube with the upper end surface of the phi 80mm glass tube, after sealing and annealing are completed, expanding holes at positions 10mm away from the upper end and the lower end of the phi 80mm glass tube, sealing the bottom end surface of the phi 80mm glass tube, and integrally annealing to form a double-layer jacket device with the phi 80mm glass tube as an outer diameter and the phi 60mm glass tube as an inner diameter and with an upper interface and a lower interface closed.
Preferably, the distance between the outer wall of the inner tube 11 and the inner wall of the outer tube 12 may be 10-20mm to ensure the external environment temperature to be measured. Specifically, it may be 10mm, 12mm, 15mm, 18mm, 20mm or the like, or may be any other value within the range of 10 to 20 mm.
The distance between the inner wall of the inner tube 11 and the outer wall of the liquid fuel container 2 can be 10-15mm to ensure a uniform temperature environment of the sample to be measured. Specifically, it may be 10mm, 11mm, 12mm, 13mm, 14mm, or 15mm, or may be any other value within the range of 10 to 15mm.
The distance between the outer wall of the inner tube 11 and the inner wall of the outer tube 12 is set to be 10-20mm, and the distance between the inner wall of the inner tube 11 and the outer wall of the liquid fuel container 2 is set to be 10-15mm, so that the flow speed and the heat exchange area of the circulating oil in the double-layer glass sleeve and the ambient temperature of a substance to be measured can be guaranteed.
In this embodiment, the media inlet 14 is located at the bottom of the outer tube 12 and the media inlet 14 is located at the top of the outer tube 12. In some embodiments, the media inlet 14 and the media outlet 15 are located on the same side; in other embodiments, the media inlet 14 and the media outlet 15 are located on opposite sides, respectively.
The heat exchange cavity 13 is mainly used for circularly introducing a heat exchange medium (such as low-temperature oil) so as to exchange heat and reduce the temperature of the liquid fuel in the liquid fuel container 2 according to the test requirement.
The volume of the liquid fuel contained in the liquid fuel container 2 is about 1/3 to 1/2 of the volume of the liquid fuel container 2, so that the measurement can be performed easily and a more accurate measurement result can be obtained.
Further, the liquid fuel low temperature performance testing device also comprises a heat insulation fixing piece.
The heat insulating fixing member includes a gasket 41, and the gasket 41 is disposed in the inner tube 11, and the bottom of the liquid fuel container 2 abuts against the gasket 41. The gasket 41 may be made of foam.
By providing the gasket 41, on the one hand, the lower end of the liquid fuel container 2 can be fixed, and on the other hand, the heat insulation effect can be achieved.
Further, the heat insulating fixture may further include a gasket 42, and the gasket 42 is disposed on the outer wall of the liquid fuel container 2 and abuts against the inner wall of the top region of the inner tube 11. Similarly, the gasket 42 may be made of foam.
By providing the gasket 42, it is possible to fix the upper end of the liquid fuel container 2, and to insulate the upper end.
In addition, the device for testing the low-temperature performance of the liquid fuel provided by the embodiment further comprises a plug body 5, and the plug body 5 is arranged at the top of the liquid fuel container 2 to close the top opening of the liquid fuel container.
As can be appreciated, the plug body 5 may illustratively be a rubber plug.
In this embodiment, the temperature detecting member 3 may be a thermometer, the plug body 5 is provided with a first through hole 51, and a measuring end of the thermometer passes through the first through hole 51 and extends into the liquid fuel container 2 to measure the temperature of the liquid fuel to be measured in the liquid fuel container 2.
Preferably, the diameter of the first through hole 51 is slightly smaller than the outer diameter of the thermometer to avoid the thermometer falling down in the first through hole 51 by itself.
Through setting up above-mentioned each part and structure, can survey cloud point, freezing point and the condensation point of the liquid fuel that awaits measuring.
Specifically, the following methods can be referred to for the measurement:
circulating oil enters from a medium inlet 14 at the lower end of the glass jacket and is discharged from a medium outlet 15 at the upper end of the glass jacket, the whole jacket is fully filled, and when the temperature of the low-temperature circulating oil bath is stably controlled, the temperature of the circulating oil in the jacket tends to be stable. At this time, the circulating oil is transferred by heat to make the temperature of the liquid sample to be measured in the liquid fuel container 2 fall within a predetermined range, and the temperature can be measured by a thermometer.
The temperature of the low-temperature circulating oil bath is regulated, so that the temperature of the measured liquid sample is changed, and when the measured sample is respectively turbid, does not dissolve crystalline substances, cannot flow at all and the like, the cloud point, the freezing point and the condensation point of the sample are obtained through corresponding tests.
Further, referring to fig. 1 and fig. 2 (fig. 2 does not show a gasket and a washer), the device for testing the low temperature performance of the liquid fuel provided by the present embodiment may further include a filter assembly;
the filter assembly includes a vacuum pump 61, a filter head 62, and a pipette 63;
the stopper body 5 is provided with a second through hole 52, one end of a pipette 63 passes through the second through hole 52 and protrudes into the liquid fuel container 2, a filter head 62 is provided at an end portion of the pipette 63 at the end protruding into the liquid fuel container 2, and an end of the pipette 63 at which the filter head 62 is not provided is connected to a vacuum pump 61.
Similarly, the diameter of the second through hole 52 is slightly smaller than the outer diameter of the pipette 63 to avoid the pipette 63 falling down in the second through hole 52.
The pipette 63 is graduated.
It can be understood that: the device for measuring the cold filter plugging point is provided with more filter assemblies than the device for measuring the cloud point, the freezing point and the condensation point, and the rest are the same.
When the filter assembly is arranged, the cold filter plugging point of the liquid fuel to be measured can be measured.
When the liquid fuel is measured, the vacuum pump 61 is started, the liquid fuel contained in the liquid fuel container 2 enters the pipette 63 after being filtered by the filter head 62 under the action of suction force, and when the amount of the liquid fuel to be measured entering the pipette 63 per minute is less than 20mL, the reading of the thermometer at the moment can be used as the cold filter plugging point of the sample to be measured.
That is, the device for testing the low-temperature performance of the liquid fuel provided by the embodiment can at least determine the cloud point, the freezing point and the condensation point of the liquid fuel in the same test; when the device is also provided with the filter assembly, the device can further determine the cold filter plugging point of the sample to be detected on the basis of determining the cloud point, the freezing point and the condensation point of the liquid fuel.
The device containing the filter assembly is particularly used for measuring the cold filter plugging point of substances such as diesel oil and the like.
In addition, the present embodiment provides a liquid fuel low-temperature performance testing apparatus, which includes a circulating oil bath instrument and the liquid fuel low-temperature performance testing apparatus;
the circulating oil bath instrument comprises a circulating oil bath body 7, a medium output pipe 71 and a medium input pipe 72.
The medium input pipe 72 is connected at both ends thereof to the medium outlet 15 and the circulating oil bath body 7, respectively, and the medium output pipe 71 is connected at both ends thereof to the medium inlet 14 and the circulating oil bath body 7, respectively.
The circulating oil bath instrument is used as a source of a refrigerant and is connected with the heat exchange tube 1 (glass jacket) through a pipeline, so that a low-temperature environment can be provided for testing, and external accurate temperature control is realized.
In summary, the determination process of the device and the equipment for testing the low-temperature performance of the liquid fuel provided by the application can refer to:
(1) pouring the liquid fuel to be tested into a glass test tube of preset liquid fuel low-temperature performance testing equipment (namely pouring the liquid fuel into the glass test tube by 1/3-1/2);
(2) and starting the circulating oil bath instrument, gradually setting and reducing the oil bath temperature until the sample to be tested has a test phenomenon, and recording the temperature of the sample at the moment according to the temperature of the thermometer.
Application example
The liquid fuel low-temperature performance test equipment provided by the embodiment of the application is used for carrying out cold filter plugging point test on 0# diesel oil added with different amounts of 5 grades of pour point depressants, and the test result is shown in the following figure 3.
The liquid fuel low-temperature performance testing equipment provided by the embodiment of the application is used for carrying out condensation point testing on 0# diesel oil added with different amounts of 5 grades of pour point depressants, and the testing result is shown in the following figure 4.
As can be seen from fig. 3 and 4: the cold filter plugging point of 0# diesel oil is 0 ℃, the freezing point is-7 ℃, and the pour point depressant is added into 0# diesel oil, so that the cold filter plugging point and the freezing point of the diesel oil can be effectively reduced, the low-temperature fluidity of the diesel oil is improved, the diesel oil reaches the standard of-10 # diesel oil, and the application range of the diesel oil is widened.
In summary, the liquid fuel low temperature performance test device provided by the application has at least the following advantages:
(1) The core body is made of a glass double-layer jacket and a glass tube material, so that the core body is easy to obtain and convenient to design and process;
(2) The device has small volume and convenient carrying, can be suitable for multiple low-temperature performance tests of various fuel liquids, and is particularly suitable for sample tests in laboratory research and industrial production;
(3) Compared with the commercially available equipment, the method has low cost and good economic benefit.
In conclusion, the liquid fuel low-temperature performance testing equipment provided by the application can effectively test the cold filter plugging point and the freezing point of the liquid fuel, and can test the cloud point and the freezing point of the liquid fuel, the testing process is convenient and fast, and the testing result is reliable and credible. The application has wide use scene, is easy to obtain and has high application value.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The device for testing the low-temperature performance of the liquid fuel is characterized by comprising a heat exchange tube, a liquid fuel container and a temperature detection piece;
the heat exchange tube comprises an inner tube and an outer tube, the inner tube is arranged in the outer tube, the top of the inner tube is hermetically connected with the top of the outer tube, and the side part and the bottom of the inner tube and the side part and the bottom of the outer tube are arranged at intervals to form a heat exchange cavity; the outer pipe is provided with a medium inlet and a medium outlet which are communicated with the heat exchange cavity;
at least a portion of said liquid fuel containment vessel extending into said inner tube;
the temperature detection piece is used for detecting the temperature of the liquid fuel to be detected contained in the liquid fuel container.
2. The liquid fuel low temperature performance testing apparatus of claim 1, wherein the medium inlet is located at a bottom of the outer tube and the medium inlet is located at a top of the outer tube.
3. The device for testing the low-temperature performance of the liquid fuel according to claim 2, wherein the heat exchange tube is a double-layer glass sleeve.
4. The liquid fuel low temperature performance testing device of claim 1, wherein the distance between the outer wall of the inner tube and the inner wall of the outer tube is 10-20mm, and/or the distance between the inner wall of the inner tube and the outer wall of the liquid fuel container is 10-15mm.
5. The liquid fuel low temperature performance testing apparatus of any one of claims 1 to 4, further comprising a heat insulating fixture;
the heat insulation fixing piece comprises a gasket; the gasket is arranged in the inner tube, and the bottom of the liquid fuel container is abutted to the gasket.
6. The apparatus for testing low temperature performance of liquid fuel as claimed in claim 5, wherein the thermal insulation fixture further comprises a gasket, the gasket is sleeved on the outer wall of the liquid fuel container and abuts against the inner wall of the top region of the inner tube.
7. The liquid fuel low temperature performance testing apparatus of claim 1, further comprising a plug body disposed at a top of the liquid fuel containment vessel to close a top opening of the liquid fuel containment vessel.
8. The liquid fuel low-temperature performance testing device according to claim 7, wherein the temperature detecting member is a thermometer, the plug body is provided with a first through hole, and a measuring end of the thermometer passes through the first through hole and extends into the liquid fuel container for measuring the temperature of the liquid fuel to be tested in the liquid fuel container.
9. The liquid fuel low temperature performance testing apparatus of claim 8, wherein the liquid fuel low temperature performance testing apparatus further comprises a filter assembly;
the filter assembly comprises a vacuum pump, a filter head and a pipette;
the plug body is provided with a second through hole, one end of the pipette penetrates through the second through hole and extends into the liquid fuel container, the filter head is arranged at the end part of one end of the pipette extending into the liquid fuel container, and the end of the pipette, which is not provided with the filter head, is connected with a vacuum pump;
the pipette is provided with graduations.
10. A liquid fuel low temperature performance testing apparatus, characterized in that the liquid fuel low temperature performance testing apparatus comprises a circulating oil bath instrument and a liquid fuel low temperature performance testing device according to any one of claims 1 to 9;
the circulating oil bath instrument comprises a circulating oil bath body, a medium output pipe and a medium input pipe;
and two ends of the medium input pipe are respectively connected with the medium outlet and the circulating oil bath body, and two ends of the medium output pipe are respectively connected with the medium inlet and the circulating oil bath body.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202221245599.1U CN218067719U (en) | 2022-05-19 | 2022-05-19 | Liquid fuel low-temperature performance testing device and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221245599.1U CN218067719U (en) | 2022-05-19 | 2022-05-19 | Liquid fuel low-temperature performance testing device and equipment |
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| CN218067719U true CN218067719U (en) | 2022-12-16 |
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| CN202221245599.1U Active CN218067719U (en) | 2022-05-19 | 2022-05-19 | Liquid fuel low-temperature performance testing device and equipment |
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| CN (1) | CN218067719U (en) |
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