CN220356881U - Device for measuring oxidation stability of distillate fuel oil - Google Patents
Device for measuring oxidation stability of distillate fuel oil Download PDFInfo
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- CN220356881U CN220356881U CN202321134611.6U CN202321134611U CN220356881U CN 220356881 U CN220356881 U CN 220356881U CN 202321134611 U CN202321134611 U CN 202321134611U CN 220356881 U CN220356881 U CN 220356881U
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- 230000003647 oxidation Effects 0.000 title claims abstract description 29
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 29
- 239000010771 distillate fuel oil Substances 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 114
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000001301 oxygen Substances 0.000 claims abstract description 51
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 51
- 239000007789 gas Substances 0.000 claims abstract description 29
- 238000001816 cooling Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 230000007246 mechanism Effects 0.000 claims abstract description 5
- 238000005057 refrigeration Methods 0.000 claims abstract description 5
- 239000007788 liquid Substances 0.000 claims description 22
- 230000005855 radiation Effects 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000012360 testing method Methods 0.000 abstract description 8
- 238000013112 stability test Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 6
- 238000009833 condensation Methods 0.000 description 5
- 230000005494 condensation Effects 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 230000001502 supplementing effect Effects 0.000 description 4
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- NHTMVDHEPJAVLT-UHFFFAOYSA-N Isooctane Chemical compound CC(C)CC(C)(C)C NHTMVDHEPJAVLT-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- JVSWJIKNEAIKJW-UHFFFAOYSA-N dimethyl-hexane Natural products CCCCCC(C)C JVSWJIKNEAIKJW-UHFFFAOYSA-N 0.000 description 2
- 238000005485 electric heating Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
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- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model discloses a device for measuring oxidation stability of distillate fuel oil, which relates to the technical field of detection and adopts the technical scheme that the device comprises a box body, wherein a sample placing space is arranged in the box body; the bath tank is arranged in the box body, can be filled with water and is used as a bearing mechanism of the constant-temperature bath for the sample; the gas circuit system is connected with the external oxygen supply assembly and supplies oxygen to the sample through a gas circuit pipeline; the thermal circulation system comprises a heating piece and a thermal circulation assembly, and the thermal circulation assembly is communicated with the inside of the bath to form a circulation passage of hot water in the bath; the cooling circulation system comprises a refrigeration component and a cooling circulation component, wherein the cooling circulation component is communicated with the inside of the bath and is used for cooling the sample in the bath. The device has the beneficial effects that the device can regulate the temperature of the bath, control and meet the requirements of testing the oxidation stability of the distillate fuel oil, and realize the stability of the oxidation stability test for sixteen hours by combining a thermal cycle system and a cold cycle system.
Description
Technical Field
The utility model relates to the technical field of detection, in particular to a device for measuring oxidation stability of distillate fuel oil.
Background
The distillate fuel oil oxidation stability measurement method is also called an acceleration method, and is an evaluation method for storage stability of distillate fuel oil. In the measurement process, the pretreated sample is filled into an oxidation tube, oxygen is introduced, the filtered 350ml sample is aged for 16 hours at the temperature of 95 ℃ under continuous bubbling of the introduced oxygen, and after the aging is finished, the total insoluble matter content formed by the sample is measured after cooling, so that the feedback of oxidation stability is obtained. The oxidation stability measuring device in the prior art, such as the 'fraction fuel oil oxidation stability measuring device' of the patent with publication number CN2406247Y, has the structures of a bath, a water inlet pipe, a water outlet pipe, an electric heating mechanism, a blowing device and the like, but has too simple functions, and particularly has the use requirement that the constant temperature performance cannot meet. Therefore, it is necessary to design a measurement device having a better constant temperature based on the prior art.
Disclosure of Invention
Aiming at one of the defects of the prior art, the utility model provides a device for measuring the oxidation stability of distillate fuel oil, which solves the problem of poor constant temperature performance of the conventional measuring device.
In order to achieve the above purpose, the present utility model provides the following technical solutions: an apparatus for measuring oxidation stability of distillate fuel oil, comprising:
the box body is internally provided with a sample placing space which is a shading space;
the bath tank is arranged in the box body, can be filled with water and is used as a bearing mechanism of the constant-temperature bath for the sample;
the gas circuit system is connected with the external oxygen supply assembly and supplies oxygen to the sample through a gas circuit pipeline;
the thermal circulation system comprises a heating piece and a thermal circulation assembly, wherein the thermal circulation assembly is communicated with the inside of the bath to form a circulation passage of hot water in the bath;
the cooling circulation system comprises a refrigeration component and a cooling circulation component, wherein the cooling circulation component is communicated with the inside of the bath and is used for cooling the sample in the bath.
Preferably, the case comprises a plurality of panels,
the body is internally provided with the bath, the air path system, the thermal circulation system and the cold circulation system; the body is provided with an opening corresponding to the bath;
the cover body is movably connected with the body and made of opaque materials, and the cover is buckled outside the bath.
Preferably, the body is provided with a heat dissipation hole, and the outside of the bath is provided with a bath heat dissipation fan.
Preferably, the gas circuit system comprises,
the oxygen interface is arranged on the wall of the box body and is used for being connected with external oxygen supply equipment;
the oxygen supply gas path is arranged in the box body and is communicated with the oxygen interface and the sample bearing container; a plurality of branches are arranged corresponding to the number of the samples in the oxygen supply gas circuit;
the flowmeter is arranged on the oxygen supply path.
Preferably, the flowmeter is a float flowmeter. The oxygen supply pipeline is provided with an oxygen supply electromagnetic valve.
Preferably, the heating element is disposed within the bath; a temperature sensor is also arranged in the bath; the thermal cycle assembly includes a thermal block having,
and the water inlet end and the water outlet end of the thermal circulation pump are communicated with the inside of the bath through pipelines.
Preferably, a water inlet component is arranged corresponding to the bath tank, the water inlet component comprises,
the liquid level sensor group is arranged in the bath tank and comprises a high limit liquid level sensor corresponding to the high water level in the bath tank and a low limit liquid level sensor corresponding to the low water level in the bath tank;
the water inlet assembly further comprises a water inlet interface communicated with a water inlet source and a water inlet pipeline communicated into the bath, a water inlet electromagnetic valve is arranged on the water inlet pipeline, and the water inlet electromagnetic valve is electrically connected with the liquid level sensor group to form a control loop.
Preferably, the water inlet pipeline is connected to a water inlet passage of the thermal cycle assembly corresponding to the bath.
Preferably, the refrigerating part of the cold circulation system comprises an air compressor and a condenser; the cold-recycling assembly includes a cold-recycling device,
and the cold circulation pump is communicated with the refrigerating piece and the sample placing piece to form a circulation passage of condensed water.
Preferably, the whole sample placing piece is a hollow cylinder body, and the cylinder body is used for placing the sample to be tested; an oxygen inlet pipe is arranged in the cylinder body, one end of the oxygen inlet pipe extends to the bottom of the sample placing part, and the other end of the oxygen inlet pipe is positioned above the sample placing part and connected with the oxygen supply gas circuit.
Preferably, the sample holder further comprises,
the condensing cavity is an independent cavity arranged in the sample placing piece cylinder, the condensing cavity is arranged on the upper portion of the sample placing piece, a water inlet and a water outlet corresponding to condensed water are formed in the upper portion of the condensing cavity, and the condensing cavity is communicated with the condensed water circulating passage through the water inlet and the water outlet.
Preferably, the system further comprises a controller, wherein the controller is electrically connected with all electric elements in the hot circulation system and the cold circulation system to form a control loop.
Compared with the prior art, the method has the following beneficial effects: the device of this scheme can adjust the bath temperature, and control to satisfy the demand of distillate fuel oil oxidation stability test, through combining two sets of systems of thermal cycle and cold cycle, realizes that oxidation stability test sixteen hour long test temperature is stable.
Through the sample holder of specific structure, realize that many samples carry out measuring effect simultaneously, improve experimental efficiency.
Drawings
FIG. 1 is a schematic overall structure of an embodiment of the present application;
FIG. 2 is a front view of an embodiment of the present application;
FIG. 3 is a side view of an embodiment of the present application;
FIG. 4 is a schematic diagram of an internal structure of an embodiment of the present application;
fig. 5 is a schematic structural diagram of an embodiment of the present application.
In the figure:
1. a case; 11. a body; 12. a cover body; 2. a bath; 21. bath heat dissipation fan; 22. a liquid level sensor group; 23. a water inlet electromagnetic valve; 31. a heating member; 32. a thermal circulation pump; 41. an air compressor; 42. a condenser; 51. an oxygen interface; 52. an oxygen supply gas path; 53. a flow meter; 6. sample placement member.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-5, the present application provides the following technical solutions:
the device for measuring the oxidation stability of the distillate fuel oil comprises a box body 1, wherein a shading sample placing space is arranged in the box body 1; the bath 2 is arranged corresponding to the sample placing space, and the interior of the bath 2 can be filled with water and is used as a bearing mechanism of the constant-temperature bath for the sample; in use the sample vessel is placed in the bath 2. The box body 1 is internally provided with a gas circuit system, a thermal circulation system and a cold circulation system. The gas circuit system is connected with an external oxygen supply assembly and supplies oxygen to the sample through a gas circuit pipeline; the thermal circulation system comprises a heating element 31 and a thermal circulation assembly, wherein the thermal circulation assembly is communicated with the inside of the bath 2 to form a circulation passage of hot water in the bath 2; the cooling circulation system comprises a refrigeration component and a cooling circulation component, wherein the cooling circulation component is communicated with the inside of the bath 2 and is used for cooling the sample in the bath 2.
By combining a cold and hot circulating system, the water temperature in the bath 2 is adjusted, so that the test sample in the bath 2 is ensured to be at a set temperature for testing. By combining the gas circuit system, continuous oxygen supply to the sample is realized.
On the basis of the above embodiment, the case 1 includes the body 11 and the cover 12, and the body 11 is provided with an opening corresponding to the bath 2; a cover body 12 is movably connected with the body 11, the cover body 12 is made of opaque material, and the cover is buckled outside the bath 2. By combining the cover 12 and the body 11, a light shielding space is provided for testing the sample.
On the basis of the above embodiment, the body 11 is provided with a heat radiation hole, and the bath 2 is provided with a bath heat radiation fan 21 on the outer side. The bath cooling fan 21 is used for directly cooling the bath 2. In addition to the cooling circulation system, the cooling efficiency of the bath 2 can be improved in combination with the bath cooling fan 21.
On the basis of the above embodiment, the gas path system comprises an oxygen interface 51 arranged on the wall of the box body 1, and the oxygen interface 51 is used for connecting with an output gas pipe of external oxygen supply equipment; an oxygen supply gas circuit 52 is arranged in the box body 1, and the oxygen supply gas circuit 52 is communicated with an oxygen interface 51 and a sample bearing container; the oxygen supply gas circuit 52 is provided with a plurality of branches corresponding to the number of the samples; and each branch of the oxygen supply gas path 52 is provided with a flowmeter 53, and the flowmeter 53 adopts a float flowmeter. An oxygen supply solenoid valve is provided on the oxygen supply gas path 52.
In view of experimental efficiency, a plurality of sample placement sites are provided in the bath 2, and therefore, one oxygen supply branch is provided for each sample placement site, so that a synchronous experiment of a plurality of samples can be performed.
On the basis of the embodiment, the heating element 31 is arranged in the bath 2, and the heating element 31 is an electric heating element; a temperature sensor 33 is also arranged in the bath 2; the thermal cycle assembly comprises a thermal cycle pump 32, and the water inlet end and the water outlet end of the thermal cycle pump 32 are communicated with the inside of the bath 2 through pipelines.
The water in the bath 2 is continuously circulated by the heat circulation pump 32, and the water in the bath 2 is circulated by the heat circulation pump 32 in combination with the heating element 31 in the bath 2, so that the water temperature in the bath 2 can be balanced, and the overall temperature rise in the bath 2 can be quickly completed.
On the basis of the embodiment, a water inlet component is arranged corresponding to the bath 2, the water inlet component comprises a liquid level sensor group 22, the liquid level sensor group 22 is arranged in the bath 2 and comprises a high limit liquid level sensor corresponding to the high water level in the bath 2 and a low limit liquid level sensor corresponding to the low water level in the bath 2; the water inlet assembly further comprises a water inlet interface communicated with a water inlet source and a water inlet pipeline communicated into the bath 2, a water inlet electromagnetic valve 23 is arranged on the water inlet pipeline, and the water inlet electromagnetic valve 23 is electrically connected with the liquid level sensor group 22 to form a control loop. The water inlet component is used for realizing automatic water supplementing in the bath 2, and when the bath 2 needs to be filled with water, the water inlet electromagnetic valve 23 is opened, and an external water source supplies water. In addition, corresponding to the water inlet assembly, a water discharge assembly is arranged on the bath 2, and the automatic water discharge of the bath 2 is realized by combining a water discharge electromagnetic valve and a water discharge connector. The control of the water inlet assembly and the water discharge assembly takes the liquid level sensor group 22 as liquid level feedback, takes the high limit liquid level sensor as liquid level feedback when the bath 2 is filled with water, and takes the low limit liquid level sensor as liquid level feedback when the water is discharged.
On the basis of the above embodiment, the water inlet pipe is connected to the water inlet passage of the thermal cycle assembly corresponding to the bath 2. As shown in fig. 5, the connection mode of the scheme connects the water inlet pipeline and the pipeline of the thermal cycle assembly, so that the number of water inlets on the bath 2 is reduced, and the water leakage risk and the processing difficulty of the bath 2 are reduced.
On the basis of the above embodiment, the refrigerating part of the cold circulation system includes the air compressor 41 and the condenser 42; the cold circulation assembly includes a cold circulation pump 43 in communication with the refrigerating element and the sample holder 6, and the cold circulation pump 43 forms a circulation path of the condensed water in combination with a corresponding cold circulation line.
On the basis of the above embodiment, the sample holder 6 is a hollow cylinder in the interior as a whole, and the cylinder is used for holding a sample to be tested; an oxygen inlet pipe is arranged in the cylinder body, one end of the oxygen inlet pipe extends to the bottom of the sample placing piece 6, and the other end of the oxygen inlet pipe is positioned above the sample placing piece 6 and is connected with an oxygen supply gas circuit 52. The sample placing part 6 further comprises a condensation cavity, wherein the condensation cavity is an independent cavity arranged in the cylinder body of the sample placing part 6, the condensation cavity is arranged on the upper portion of the sample placing part 6, a water inlet and a water outlet corresponding to condensed water are formed in the upper portion of the condensation cavity, and the condensation cavity is communicated with the condensed water circulation passage through the water inlet and the water outlet. When cooling is required, condensed water is injected into the condensing chamber and remains circulated. At this time, the heating element of the thermal circulation system is not heated, and the temperature is continuously reduced, so that the cooling of the sample is realized.
On the basis of the embodiment, the scheme also comprises a controller, wherein the controller is electrically connected with all electric elements in the hot circulation system and the cold circulation system to form a control loop, so that the control system is formed. The method for measuring the oxidation stability of the distillate fuel oil comprises the following steps of:
(1) Water is filled in a water bath: setting automatic water supplementing, driving tap water into the water tank until the water supplementing is finished by a high limit liquid level sensor, and starting the automatic water supplementing all the time in the test process;
(2) And (3) water bath temperature control: setting the water bath temperature to 95 ℃, controlling the temperature to be on, starting the heating element to work, starting the heat circulation assembly, and starting the internal circulation of the water bath, homogenizing the water bath, and automatically controlling the temperature of the system;
(3) Condensed water: setting the condensed water temperature at 22-27 ℃, starting a compressor, and automatically controlling the temperature of the system;
(4) Sample holder 6 is mounted: placing the sample placing pieces 6 into the bath 2, connecting all pipelines, connecting the sample placing pieces 6 in parallel, opening an oxygen gas path, and adjusting the flow rate to 50mL/min; the cold circulation pipeline is connected;
(5) And (3) shading: the cover body 12 is buckled, the shading of the sample is completed, the test is started, and the time is 16 hours;
(6) And (3) draining: after the test time is up, automatically starting the bath 2 to drain and empty, discharging high-temperature water in the bath 2, and determining that the drainage is finished according to feedback of a low-limit liquid level sensor;
(7) Waiting for the sample placement member 6 to cool;
(8) Standing after cooling: if the temperature is less than the room temperature, water can be repeatedly filled and drained; setting standing time (not more than 4 hours), and starting a bath cooling fan when standing; after cooling and standing are completed, the sample placing piece 6 is moved out, and the following experiment is carried out:
the cooled aged sample (after 16 hours from the start of the experiment of the instrument, the main bath is automatically drained and cooled, the temperature is automatically lowered to be close to room temperature within 15 minutes, the sample is placed for more than 1 hour and not more than 4 hours), the aged sample is poured into a separating funnel, the aged sample is filtered through a weighted and double-layer glass fiber filter paper laid in a Golgi filter pot, after the filtration is finished, an oxidation tube and an oxygen tube are washed three times with isooctane, about 50ml each time, and the separating funnel is also washed with isooctane.
The oil-free filter pot was dried in an oven (99.+ -. 1 ℃ C.) for 1 hour, taken out, cooled in a dryer for 30 to 40 minutes, weighed to the nearest 0.1mg, and the insoluble matter mass (m 1) on the filter paper was measured.
The insoluble matter adhering to the inner wall of the oxidation tube and the wall of the oxygen-introducing tube was dissolved with the triad mixture, and the triad mixture was evaporated to dryness at 160.+ -. 5 ℃ by air jet method to determine the adhering insoluble matter amount (m 2).
Remarks: three mixture: an equal volume of a mixture of pure acetone, methanol and benzene was analyzed.
The total insoluble content of the sample after aging was m1+m2.
Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. An apparatus for measuring oxidation stability of distillate fuel oil, comprising:
a sample placing space is arranged in the box body (1), and the sample placing space is a shading space;
the bath tank (2) is arranged in the box body (1), and the interior of the bath tank (2) can be filled with water and is used as a bearing mechanism of the constant-temperature bath for the sample;
the gas circuit system is connected with the external oxygen supply assembly and supplies oxygen to the sample through a gas circuit pipeline;
the thermal circulation system comprises a heating piece (31) and a thermal circulation assembly, wherein the thermal circulation assembly is communicated with the inside of the bath (2) to form a circulation passage of hot water in the bath (2);
the cooling circulation system comprises a refrigeration component and a cooling circulation component, wherein the cooling circulation component is communicated with the inside of the bath (2) and is used for cooling the sample in the bath (2).
2. The distillate fuel oil oxidation stability measuring device according to claim 1, wherein the tank (1) comprises,
the body (11) is internally provided with the bath (2), the gas circuit system, the thermal circulation system and the cold circulation system; the body (11) is provided with an opening corresponding to the bath (2);
the cover body (12) is movably connected with the body (11) and made of a light-proof material, and the cover is buckled outside the bath (2).
3. The device for measuring the oxidation stability of distillate fuel oil according to claim 2, wherein the body (11) is provided with a heat radiation hole, and a bath heat radiation fan (21) is arranged outside the bath (2).
4. The distillate fuel oil oxidation stability determination apparatus according to claim 1, wherein the gas path system comprises,
an oxygen interface (51) arranged on the wall of the box body (1) and used for being connected with external oxygen supply equipment;
the oxygen supply gas circuit (52) is arranged in the box body (1) and is communicated with the oxygen interface (51) and the sample bearing container; the oxygen supply gas circuit (52) is provided with a plurality of branches corresponding to the number of the samples;
the flowmeter (53) is arranged on the oxygen supply gas path (52).
5. The distillate fuel oil oxidation stability measuring device according to claim 1, wherein the heating element (31) is provided in the bath (2); a temperature sensor (33) is also arranged in the bath (2); the thermal cycle assembly includes a thermal block having,
and the water inlet end and the water outlet end of the thermal circulation pump (32) are communicated with the inside of the bath (2) through pipelines.
6. The apparatus for measuring oxidation stability of distillate fuel oil according to claim 1, wherein a water inlet assembly is provided corresponding to the bath (2), the water inlet assembly comprising,
the liquid level sensor group (22) is arranged in the bath tank (2) and comprises a high limit liquid level sensor corresponding to the high water level in the bath tank (2) and a low limit liquid level sensor corresponding to the low water level in the bath tank (2);
the water inlet assembly further comprises a water inlet interface communicated with a water inlet source and a water inlet pipeline communicated into the bath (2), a water inlet electromagnetic valve (23) is arranged on the water inlet pipeline, and the water inlet electromagnetic valve (23) is electrically connected with the liquid level sensor group (22) to form a control loop.
7. The device for measuring the oxidation stability of distillate fuel oil according to claim 6, wherein the water inlet pipe is connected to the water inlet passage of the corresponding bath (2) of the thermal cycle assembly.
8. The apparatus for measuring oxidation stability of distillate fuel oil according to claim 4, wherein the refrigerating unit of the refrigeration cycle system comprises an air compressor (41) and a condenser (42); the cold-recycling assembly includes a cold-recycling device,
and a cold circulation pump (43) which is communicated with the refrigerating element and the sample placing element (6) and forms a circulation passage of condensed water.
9. The device for measuring the oxidation stability of distillate fuel oil according to claim 8, wherein the sample holder (6) is a hollow cylinder in the interior, and the cylinder is used for holding a sample to be tested; an oxygen inlet pipe is arranged in the cylinder body, one end of the oxygen inlet pipe extends to the bottom of the sample placing piece (6), and the other end of the oxygen inlet pipe is positioned above the sample placing piece (6) and is connected with the oxygen supply gas circuit (52).
10. The apparatus for measuring oxidation stability of distillate fuel oil according to claim 9, wherein the sample holder (6) further comprises,
the condensing cavity is an independent cavity arranged in the cylinder body of the sample placing piece (6), the condensing cavity is arranged on the upper portion of the sample placing piece (6), a water inlet and a water outlet corresponding to condensed water are formed in the upper portion of the condensing cavity, and the condensing cavity is communicated with the condensed water circulating passage through the water inlet and the water outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321134611.6U CN220356881U (en) | 2023-05-11 | 2023-05-11 | Device for measuring oxidation stability of distillate fuel oil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321134611.6U CN220356881U (en) | 2023-05-11 | 2023-05-11 | Device for measuring oxidation stability of distillate fuel oil |
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| Publication Number | Publication Date |
|---|---|
| CN220356881U true CN220356881U (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321134611.6U Active CN220356881U (en) | 2023-05-11 | 2023-05-11 | Device for measuring oxidation stability of distillate fuel oil |
Country Status (1)
| Country | Link |
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| CN (1) | CN220356881U (en) |
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- 2023-05-11 CN CN202321134611.6U patent/CN220356881U/en active Active
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