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CN-121978312-A - Device for measuring oxidation stability of distillate fuel oil

CN121978312ACN 121978312 ACN121978312 ACN 121978312ACN-121978312-A

Abstract

The invention relates to the technical field of distillate fuel oil detection and analysis, in particular to a distillate fuel oil oxidation stability measuring device which comprises a cabinet body and a plurality of sample tubes, wherein a bath thermal cavity is arranged in the cabinet body, a plurality of insertion holes communicated with the bath thermal cavity are formed in the cabinet body, the sample tubes can pass through the insertion holes in a matching manner and are inserted into the bath thermal cavity, annular flexible connectors are fixed on the inner wall of each bath thermal cavity, annular air bags are fixed on the inner edge wall of each flexible connector, and annular air bags are arranged on the outer wall of the sample tube and clamped in when the annular air bags are inflated and expanded. According to the invention, through linkage coordination of the driving mechanism, the shaking-assisting mechanism and the pushing linkage mechanism, the supporting plate is driven to perform compound offset in the horizontal and vertical directions, the sample tube can be driven to synchronously perform multidimensional shaking, the jolt and shaking working conditions of fuel oil in the actual transportation process are simulated, the environmental conditions of the accelerated oxidation test are closer to the actual scene, the evaluation deviation is reduced, and the prediction value of the measurement result on the actual storage and transportation stability is improved.

Inventors

  • MA BAOQUAN
  • GAO JIE
  • BIAN HAILONG
  • ZHANG KAI
  • MIAO QIN
  • Deng Gaiyan
  • LIU YING

Assignees

  • 延安油气产品质量检验检测有限责任公司

Dates

Publication Date
20260505
Application Date
20260408

Claims (10)

  1. 1. The utility model provides a distillate fuel oil oxidation stability survey device, includes the cabinet body (1) and a plurality of sample pipe (2), is equipped with in the cabinet body (1) and bathes hot chamber (11), is equipped with a plurality of and bathes the spliced eye (12) of hot chamber (11) intercommunication on the cabinet body (1), and in sample pipe (2) can match and pass spliced eye (12) and insert bathes hot chamber (11), its characterized in that: An annular flexible connector (51) is fixed on the inner wall of each bath heat cavity (11), an annular air bag (5) is fixed on the inner edge wall of each flexible connector (51), and an annular groove (21) for clamping is formed in the outer wall of the sample tube (2) when the annular air bag (5) is inflated and expanded; A supporting plate (6) for supporting the bottom of each sample tube (2) is arranged in the cabinet body (1) through a shaking assisting mechanism (8); The cabinet body (1) is provided with a driving mechanism (4), and the driving mechanism (4) is in linkage fit with the shaking-assisting mechanism (8) through a pushing linkage mechanism (9) and is used for driving the supporting plate (6) to shake up and down and left and right; And a stirring mechanism is arranged at the inner bottom of the bath heat cavity (11), and is in linkage fit with the driving mechanism (4) and used for stirring the heat medium in the bath heat cavity (11).
  2. 2. The device for measuring the oxidation stability of distillate fuel oil according to claim 1, wherein: two adjacent annular air bags (5) are respectively communicated and connected through an air duct (52); The annular air bag (5) at one side is communicated and connected with the air charging and discharging pipe (53), and the air charging and discharging pipe (53) extends to the outside of the cabinet body (1) and is communicated with external air charging and discharging equipment.
  3. 3. The device for measuring the oxidation stability of distillate fuel oil according to claim 1, wherein: the shaking assisting mechanism (8) comprises a sliding rod (81), a guide rod (85) and an arc-shaped slope body (86); a sliding rail (82) extending leftwards and rightwards is fixed on the inner bottom wall of the bath heat cavity (11), a sliding seat (83) is arranged on the sliding rail (82) in a limiting sliding manner, and a support (84) in an inverted L shape is fixed at the top of the sliding seat (83); A vertically-through sliding hole (841) is formed in the top of the bracket (84), and the sliding rod (81) is installed in the sliding hole (841) in a sliding and penetrating manner; the arc-shaped slope body (86) is fixed on the inner bottom wall of the bath heat cavity (11) and is positioned on one side of the sliding rail (82), and the arc-shaped slope body (86) extends leftwards and rightwards and is in a shape of being high in the middle and low in the two sides; a roller (811) which is matched with the top surface of the arc-shaped slope body (86) in an extrusion mode is arranged at the bottom end of the sliding rod (81); the guide rod (85) is fixedly penetrated on the bracket (84) and extends leftwards and rightwards; One end of the guide rod (85) is in a rounded angle shape, is used as a pressure-bearing end, is matched with the pushing linkage mechanism (9) in an extrusion mode, and the other end of the guide rod (85) penetrates through the outside of the cabinet body (1) in a sliding mode, and is connected with the outer wall of the cabinet body (1) through an elastic reset structure; the supporting plate (6) is fixedly arranged at the top of the sliding rod (81).
  4. 4. A distillate fuel oil oxidation stability determination apparatus according to claim 3, wherein: the elastic reset structure comprises a mounting frame (851), a mounting disc (853) and a spring (854); The mounting frame (851) is in a transverse L shape, one end of the mounting frame is fixed on the outer side wall of the cabinet body (1), and the other end of the mounting frame is provided with a left-right through orifice (852); the guide rod (85) penetrates through the orifice (852) in a sliding mode, and the mounting disc (853) is fixed on the outer wall of the annular air bag (5) positioned outside the cabinet body (1); the spring (854) is sleeved outside the guide rod (85), one end of the spring is fixed with the mounting disc (853), and the other end of the spring is fixed with the mounting frame (851); the spring (854) is compressed and stored when the guide rod (85) is pressed by the pushing linkage mechanism (9) to move.
  5. 5. The device for measuring the oxidation stability of distillate fuel oil according to claim 4, wherein: The driving mechanism (4) comprises a driving motor (42) and a main shaft rod (43); a motor frame (41) is fixed on the cabinet body (1), and the driving motor (42) is fixed on the motor frame (41); the main shaft rod (43) is fixed on an output shaft of the driving motor (42) and vertically penetrates downwards to extend into the bath heat cavity (11).
  6. 6. The device for measuring the oxidation stability of distillate fuel oil according to claim 5, wherein: The pushing linkage mechanism (9) comprises a second rotating shaft (91) and a pushing wheel (92); a bottom cavity (13) is arranged below the bath heat cavity (11) in the cabinet body (1), and the bottom end of the main shaft rod (43) extends into the bottom cavity (13) in a penetrating way; The second rotating shaft (91) is vertically and rotatably arranged on the inner bottom wall of the bath heat cavity (11), and the bottom end of the second rotating shaft (91) penetrates through and extends into the bottom cavity (13); the bottom end of the main shaft rod (43) is in transmission connection with the bottom end of the second rotating shaft (91) through a belt pulley group (93); the pushing wheel (92) is fixed on the top end of the second rotating shaft (91) and corresponds to the holding position of the guide rod (85); The circumferential side wall of the pushing wheel (92) is provided with an arc-shaped protruding portion (921), and the arc-shaped protruding portion (921) is in extrusion fit with the bearing end of the guide rod (85).
  7. 7. The device for measuring the oxidation stability of distillate fuel oil according to claim 6, wherein: The mounting frame (851) is provided with a vertical inserting hole (855), and the inserting hole (855) is communicated with the orifice (852); a bolt (856) is movably inserted in the insertion hole (855); The outer wall of the guide rod (85) is provided with a limiting clamping hole (857), and when the bolt (856) is inserted into the limiting clamping hole (857) in an aligned mode, the pressure-bearing end of the guide rod (85) is not in contact with the outer peripheral wall of the pushing wheel (92) and the arc-shaped protruding part (921).
  8. 8. The device for measuring the oxidation stability of distillate fuel oil according to claim 6, wherein: the stirring mechanism comprises a plurality of first rotating shafts (7) and stirring paddles (71); The first rotating shafts (7) are rotatably arranged on the inner bottom wall of the bath heat cavity (11) at intervals, and the bottom ends of the stirring paddles (71) vertically and downwards penetrate through and extend into the bottom cavity (13); the top end of each first rotating shaft (7) is provided with a stirring paddle (71); The main shaft rod (43) is located on the outer wall of the bottom cavity (13), gears (72) are fixedly sleeved on the outer wall of the bottom cavity (13), fluted discs (73) are fixedly sleeved on the outer wall of each first rotating shaft (7) located in the bottom cavity (13), two adjacent fluted discs (73) are correspondingly meshed, and the gears (72) are correspondingly meshed with one of the fluted discs (73).
  9. 9. The device for measuring the oxidation stability of distillate fuel oil according to claim 1, wherein: A plurality of hollow grooves (61) which are vertically communicated are uniformly distributed on the supporting plate (6); The supporting plate (6) is made of metal materials, and magnet blocks (201) which are in magnetic attraction fit with the supporting plate (6) are embedded at the bottoms of the sample tubes (2).
  10. 10. The device for measuring the oxidation stability of distillate fuel oil according to claim 1, wherein: A cover body (22) is arranged at the top of each sample tube (2), and the cover body (22) is made of a light-proof material; The upper half part of the sample tube (2) is made of opaque materials.

Description

Device for measuring oxidation stability of distillate fuel oil Technical Field The invention relates to the technical field of distillate fuel oil detection and analysis, in particular to a device for measuring oxidation stability of distillate fuel oil. Background The distillate fuel oil oxidation stability assay is a laboratory test method that evaluates the propensity of fuel oils to resist oxidative deterioration and deposit formation during storage and transport by accelerating the oxidation process. A certain amount of the filtered oil sample is usually placed in a specific oxidation tube, and oxygen is introduced at a constant temperature for a certain time to promote the oxidation reaction of the oil sample. After the completion of the reaction, the oxidation stability of the fuel oil was quantitatively evaluated by measuring the mass of the total insoluble matter produced. When the conventional distillate fuel oil oxidation stability measuring device is used, most of sample tubes are arranged statically, vibration cannot be applied to the sample tubes to simulate shaking in the transportation process, so that deviation exists between an evaluation result and an actual working condition, even if part of devices are provided with stirring structures, stirring paddles directly invade the interior of the oil samples, strong shearing action can damage oil sample components, generated friction heat can interfere the natural progress of oxidation reaction, measuring accuracy is affected, and the defects reduce the value of the method in the aspects of actual simulation and prediction. Disclosure of Invention The invention aims to provide a device for measuring oxidation stability of distillate fuel oil, which solves the technical problems in the background technology. In order to achieve the above purpose, the present invention provides the following technical solutions. A distillate fuel oil oxidation stability measuring device comprises a cabinet body and a plurality of sample tubes, wherein a bath heat cavity is arranged in the cabinet body, a plurality of insertion holes communicated with the bath heat cavity are formed in the cabinet body, the sample tubes can be inserted into the bath heat cavity in a matched mode through the insertion holes, annular flexible connectors are fixed on the inner wall of each bath heat cavity, annular air bags are fixed on the inner edge walls of the flexible connectors, annular grooves for clamping the annular air bags when the annular air bags are inflated are formed in the outer walls of the sample tubes to achieve clamping, a supporting plate for supporting the bottoms of the sample tubes is arranged in the cabinet body through a shaking assisting mechanism, a driving mechanism is arranged on the cabinet body and in linkage fit with the shaking assisting mechanism through a pushing linkage mechanism and used for driving the supporting plate to shake up and down, and a stirring mechanism is arranged at the bottoms of the bath heat cavity and in linkage fit with the driving mechanism and used for stirring heat mediums in the bath heat cavity. Preferably, two adjacent annular air bags are respectively connected through an air duct, wherein one annular air bag on one side is connected with an air charging and discharging pipe in a communication way, and the air charging and discharging pipe extends to the outside of the cabinet body and is communicated with external air charging and discharging equipment. The shaking-assisting mechanism comprises a sliding rod, a guide rod and an arc-shaped slope body, wherein a sliding rail extending leftwards and rightwards is fixed on the bottom wall of a bath heat cavity, a sliding seat is arranged on the sliding rail in a limiting sliding manner, a support in an inverted L shape is fixed at the top of the sliding seat, a vertically through sliding hole is formed in the top of the support, the sliding rod is installed in the sliding hole in a sliding manner, the arc-shaped slope body is fixed on the inner bottom wall of the bath heat cavity and is positioned on one side of the sliding rail, the arc-shaped slope body extends leftwards and rightwards and is in a shape with two sides being high in the middle, rollers in extrusion fit with the top surface of the arc-shaped slope body are installed at the bottom end of the sliding rod, the guide rod penetrates through the support and extends leftwards and rightwards, one end of the guide rod is in a rounded corner shape and serves as a bearing end to be in extrusion fit with the pushing linkage mechanism, the other end of the guide rod penetrates through the outside of the cabinet body in a sliding manner and is connected with the outer wall of the cabinet body through an elastic reset structure, and the supporting plate is fixedly installed at the top of the sliding rod. The elastic reset structure comprises a mounting frame, a mounting disc and a spring, wherein the mounting frame is