Ignition device for oil flash point test

Abstract

The utility model relates to the technical field of flash point experiment, disclose a kind of ignition device of oil product flash point test, including: the sample jar body of installation in testing machine, and the cover body of being arranged above sample jar body, the sealing of can body is carried out oil product flash point test;Ignition mechanism is arranged on the upper surface of cover body, and the aperture of being opened on the upper surface of cover body is passed through for ignition mechanism;Through the cooperation between ignition mechanism and movable sealing mechanism, the up-down sliding displacement of ignition part can be accurately controlled by driving part, and the position of ignition part is monitored in real time, ensure the accuracy of ignition position, it is convenient to accurately ignite sample steam, improve the reliability of ignition and the repeatability of test, movable sealing mechanism can be opened when ignition part is inserted into sample jar body, and after ignition part is extracted, sample jar body is closed, to guarantee the environment of sealing carries out flash point test, improve the accuracy of the result of flash point test.

Description

Technical Field

[0001] This utility model relates to the field of flash point testing technology, specifically to an ignition device for testing the flash point of oil products. Background Technology

[0002] The flash point of petroleum products is determined by heating a petroleum product sample under certain conditions and then continuously stirring it, causing the sample to produce vapor due to heating. The lowest temperature at which the vapor produced by the sample can ignite in the air is the flash point of the sample. The closed-cup flash point of petroleum products refers to the flash point measured using a specified closed-cup flash point tester. Its characteristic is that the sample is placed in a sample cup with a lid, and the environment in which the sample is heated to produce vapor is a sealed space between the upper part of the sample and the lid inside the sample cup.

[0003] Traditional flash point tests typically involve manual ignition by opening the cap. However, ignition requires the igniter to be placed in the space for a certain period of time. Manual ignition has poor control over the time required, making it difficult to accurately ensure that the igniter remains in the space for a sufficient period of time, which has a certain impact on the flash point test results. Therefore, we need to propose an ignition device for oil flash point testing. Utility Model Content

[0004] The purpose of this invention is to provide an ignition device for testing the flash point of oil products. It adopts a semi-open cover, which does not cause resistance during the insertion of the ignition mechanism into the tank, allowing the ignition mechanism to be quickly inserted into the tank to achieve the flash point test of the vapor inside the tank. It also reduces the leakage of vapor from the tank and improves the accuracy of the flash point test structure, thereby solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an ignition device for testing the flash point of oil, comprising:

[0006] The sample container installed inside the testing machine, and the cover set on top of the sample container, are used to seal the container for oil flash point testing.

[0007] An ignition mechanism is provided on the upper surface of the cover, and an opening is provided on the upper surface of the cover for the ignition mechanism to pass through. A movable sealing mechanism is provided at the lower end of the opening to seal the opening before and after the sample vapor is ignited.

[0008] The ignition mechanism includes a support, a drive, and an ignition element. The drive is mounted on the upper end of the support, and the ignition element is driven by the drive and slides on the support.

[0009] Preferably, the ignition element includes a screw cylinder, the lower end of which is fixedly connected to two sets of ignition rods, and a resistance wire is provided between the two sets of ignition rods.

[0010] Preferably, the driving component includes a lead screw threaded into the screw barrel, the upper end of the lead screw being driven by a second motor, and a displacement sensor being provided at the lower end of the screw barrel.

[0011] Preferably, the support includes a mounting plate and three sets of uprights fixed to the upper surface of the cover. The upper ends of the three sets of uprights are fixedly connected to the lower surface of the mounting plate. The second motor is disposed on the upper surface of the mounting plate. Limiting blocks that slide with the three sets of uprights are respectively provided on the upper outer side of the screw cylinder.

[0012] Preferably, the movable sealing mechanism includes a sealing plate and an inner tube fixedly connected to the lower end of the opening. A side frame is provided on the outer side of the inner tube, and a connecting rod is fixedly connected to the side frame. A connecting frame is fixedly connected to the outer side of the sealing plate. The connecting frame is rotatably mounted on the connecting rod, and a torsion spring is provided on the connecting rod. A sealing rubber ring is provided at the lower end of the inner tube.

[0013] Preferably, the upper surface of the cover is provided with a sample feed pipe, and the upper end of the sample feed pipe is provided with a sealing cap.

[0014] Preferably, it also includes a stirring mechanism installed on the cover, the stirring mechanism including a first motor and a rotating shaft, the rotating shaft being rotatably disposed on the lower surface of the cover, the upper end of the rotating shaft penetrating the cover and being driven by the first motor, and multiple sets of stirring rods being disposed on the outer side of the rotating shaft.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This invention primarily utilizes the cooperation between an ignition mechanism and a movable sealing mechanism. A driving component precisely controls the vertical sliding displacement of the ignition element and monitors its position in real time, ensuring accurate ignition positioning. This facilitates precise ignition of the sample vapor, improving ignition reliability and test repeatability. Simultaneously, the movable sealing mechanism opens when the ignition element is inserted into the sample container and seals it after the ignition element is removed, ensuring a sealed environment for flash point testing and improving the accuracy of the flash point test results. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the sample container structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the stirring mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the ignition mechanism of this utility model;

[0020] Figure 4This is a schematic diagram of the movable sealing mechanism of this utility model.

[0021] In the diagram: 1. Sample container; 2. Cover; 3. Sample feed pipe; 4. Sealing cover; 5. Stirring mechanism; 51. First motor; 52. Rotating shaft; 53. Stirring rod; 6. Ignition mechanism; 61. Support component; 611. Mounting plate; 612. Vertical rod; 62. Drive component; 621. Second motor; 622. Lead screw; 63. Ignition component; 631. Screw barrel; 632. Limiting block; 633. Ignition rod; 634. Resistance wire; 64. Displacement sensor; 7. Opening; 8. Movable sealing mechanism; 81. Inner tube; 82. Side frame; 83. Connecting rod; 84. Torsion spring; 85. Sealing plate; 86. Connecting frame; 87. Sealing rubber ring. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-4 This utility model provides a technical solution: an ignition device for testing the flash point of oil products, comprising:

[0024] The sample tank 1 installed inside the testing machine and the cover 2 set above the sample tank 1 are used to seal the tank for oil flash point testing. The sample tank 1 is made of stainless steel to improve its service life.

[0025] An ignition mechanism 6 is provided on the upper surface of the cover 2, and an opening 7 is provided on the upper surface of the cover 2 for the ignition mechanism 6 to pass through. A movable sealing mechanism 8 is provided at the lower end of the opening 7 to close the opening 7. The opening 7 is sealed before and after the sample vapor is ignited by the movable sealing mechanism 8.

[0026] The ignition mechanism 6 includes a support member 61, a drive member 62, and an ignition member 63. The drive member 62 is mounted on the upper end of the support member 61, and the ignition member 63 is driven by the drive member 62 and slides on the support member 61.

[0027] The ignition element 63 includes a screw barrel 631. Two sets of ignition rods 633 are fixedly connected to the lower end of the screw barrel 631, and a resistance wire 634 is provided between the two sets of ignition rods 633. The ignition rods 633 can prevent the resistance wire 634 from contacting the sealing plate 85, thereby improving the service life of the resistance wire 634 and ensuring that the resistance wire 634 can perform the ignition of oil vapor. The ignition rods 633 and the resistance wire 634 are electrically connected by brazing.

[0028] The driving component 62 includes a lead screw 622 threadedly connected to a screw barrel 631. The upper end of the lead screw 622 is driven by a second motor 621. A displacement sensor 64 is provided at the lower end of the screw barrel 631. The second motor 621 drives the lead screw 622 to adjust the position of the ignition element 63, which can quickly send the ignition element 63 into the sample container 1 for ignition. After a certain period of time, the ignition element 63 is driven to reset. At the same time, the displacement sensor 64 monitors the depth of the ignition element 63 inserted into the sample container 1. The displacement sensor 64 is electrically connected to the controller on the flash point tester to receive data from the displacement sensor 64. The displacement sensor 64 is a well-known technology in the prior art and will not be described in detail.

[0029] The support member 61 includes a mounting plate 611 and three sets of uprights 612 fixed to the upper surface of the cover 2. The upper ends of the three sets of uprights 612 are fixedly connected to the lower surface of the mounting plate 611. The second motor 621 is set on the upper surface of the mounting plate 611. The upper outer side of the screw barrel 631 is respectively provided with limiting blocks 632 that slide with the three sets of uprights 612. By sliding the limiting blocks 632 on the uprights 612, the screw barrel 631 can avoid angular deviation during the lifting and lowering process, thereby ensuring the stable lifting and lowering of the ignition element 63 and improving the stability of ignition.

[0030] The movable sealing mechanism 8 includes a sealing plate 85 and an inner tube 81 fixedly connected to the lower end of the opening 7. A side frame 82 is provided on the outside of the inner tube 81, and a connecting rod 83 is fixedly connected to the side frame 82. A connecting frame 86 is fixedly connected to the outside of the sealing plate 85. The connecting frame 86 is rotatably mounted on the connecting rod 83, and a torsion spring 84 is provided on the connecting rod 83. A sealing rubber ring 87 is provided at the lower end of the inner tube 81. With the setting of the torsion spring 84, the sealing plate 85 can be stably pressed on the sealing rubber ring 87 to ensure the sealing of the sample container 1.

[0031] The upper surface of the cover 2 is provided with a sample feed pipe 3, and the upper end of the sample feed pipe 3 is provided with a sealing cap 4. The sealing cap 4 is used to conveniently seal the sample feed pipe 3 after adding oil, thereby ensuring that the oil is heated in the closed space.

[0032] It also includes a stirring mechanism 5 installed on the cover 2. The stirring mechanism 5 includes a first motor 51 and a rotating shaft 52. The rotating shaft 52 is rotatably disposed on the lower surface of the cover 2. The upper end of the rotating shaft 52 passes through the cover 2 and is driven by the first motor 51. Multiple sets of stirring rods 53 are arranged on the outside of the rotating shaft 52. The first motor 51 drives the rotating shaft 52 so that the multiple sets of stirring rods 53 can stir the heated oil, thereby making the vapor generated by the oil evenly distributed in the sample tank 1, which facilitates the ignition of the flash point test.

[0033] This device is installed on a flash point tester and connected to the heating device and controller on the flash point tester. When conducting a flash point test on an oil product, the oil product to be tested is first put into the sample tank 1 through the sample feed pipe 3, and the oil product is heated by the heating device of the flash point tester. At the same time, the stirring mechanism 5 stirs the oil product to accelerate the generation of vapor in the oil product.

[0034] During the flash point test, the second motor 621 is first started to drive the lead screw 622 to rotate. Under the action of the threaded transmission, the lead screw 622 drives the screw barrel 631 to slide downward along the upright 612 of the support member 61. The displacement sensor 64 monitors the position of the screw barrel 631 in real time to ensure that the ignition element 63 moves down accurately. During the descent of the ignition element 63, it will come into contact with the sealing plate 85, which will cause the sealing plate 85 to rotate around the connecting rod 83 as the axis and apply pressure to the torsion spring 84. When the ignition element 63 reaches the vapor area above the sample tank 1, the resistance wire 634 is energized and heated to ignite the sample vapor. After ignition, the second motor 621 rotates in the opposite direction, and the lead screw 622 drives the screw barrel 631 to move up and reset. At the same time, the sealing plate 85 re-closes the opening 7 under the action of the torsion spring 84 to prevent vapor leakage and ensure the safety of the test and the accuracy of subsequent operations.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flash point tester for oil products, characterised in that, include: The sample tank (1) installed in the testing machine and the cover (2) set above the sample tank (1) are used to seal the tank for oil flash point testing. An ignition mechanism (6) is provided on the upper surface of the cover (2), and an opening (7) is provided on the upper surface of the cover (2) for the ignition mechanism (6) to pass through. The lower end of the opening (7) is provided with a movable sealing mechanism (8) to close the opening (7). The opening (7) before and after the sample vapor is ignited is sealed by the movable sealing mechanism (8). The ignition mechanism (6) includes a support (61), a drive (62) and an ignition element (63). The drive (62) is mounted on the upper end of the support (61), and the ignition element (63) is driven by the drive (62) and slides on the support (61).

2. The ignition device for oil flash point test according to claim 1, characterized in that: The ignition element (63) includes a screw cylinder (631), and two sets of ignition rods (633) are fixedly connected to the lower end of the screw cylinder (631), and a resistance wire (634) is provided between the two sets of ignition rods (633).

3. The ignition device for oil flash point test according to claim 2, characterized in that: The driving component (62) includes a lead screw (622) threadedly connected inside the screw barrel (631). The upper end of the lead screw (622) is driven by a second motor (621), and a displacement sensor (64) is provided at the lower end of the screw barrel (631).

4. The ignition device for oil flash point test according to claim 3, characterized in that: The support member (61) includes a mounting plate (611) and three sets of uprights (612) fixed to the upper surface of the cover (2). The upper ends of the three sets of uprights (612) are fixedly connected to the lower surface of the mounting plate (611). The second motor (621) is set on the upper surface of the mounting plate (611). The upper outer side of the screw cylinder (631) is respectively provided with limiting blocks (632) that slide with the three sets of uprights (612).

5. The ignition device for oil flash point test according to claim 1, characterized in that: The movable sealing mechanism (8) includes a sealing plate (85) and an inner tube (81) fixedly connected to the lower end of the opening (7). A side frame (82) is provided on the outer side of the inner tube (81), and a connecting rod (83) is fixedly connected to the side frame (82). A connecting frame (86) is fixedly connected to the outer side of the sealing plate (85). The connecting frame (86) is rotatably mounted on the connecting rod (83), and a torsion spring (84) is provided on the connecting rod (83). A sealing rubber ring (87) is provided at the lower end of the inner tube (81).

6. The ignition device for oil flash point test according to claim 1, characterized in that: The upper surface of the cover (2) is provided with a sample feed pipe (3), and the upper end of the sample feed pipe (3) is provided with a sealing cap (4).

7. The ignition device for oil flash point test according to claim 1, characterized in that: It also includes a stirring mechanism (5) installed on the cover (2). The stirring mechanism (5) includes a first motor (51) and a rotating shaft (52). The rotating shaft (52) is rotatably disposed on the lower surface of the cover (2). The upper end of the rotating shaft (52) passes through the cover (2) and is driven by the first motor (51). Multiple sets of stirring rods (53) are provided on the outer side of the rotating shaft (52).

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