An on-line oil detection device
By combining flash point control components, overflow sections, and buoyancy detection components, the problems of vapor diffusion and inaccurate oil level control in online oil testing devices during non-testing periods are solved, thereby improving the safety and accuracy of oil testing and adapting to the testing needs of different oil products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA UNIV OF PETROLEUM ENG CO LTD
- Filing Date
- 2025-08-15
- Publication Date
- 2026-05-19
AI Technical Summary
Existing online oil testing devices are prone to vapor diffusion when not in use, which affects testing accuracy and safety. Furthermore, their oil level control is inaccurate and they are difficult to adapt to the testing requirements of different oil products.
By combining a flash point control component and an overflow section with a buoyancy detection component, and using a suction mounting ring and limit control components, automatic control of steam and precise adjustment of oil level are achieved. Steam is drawn in using a suction pipe and a suction fan, and combined with a buoyancy detection component and an indicator light, oil level accuracy and safety are ensured.
It effectively prevents vapor diffusion, improves testing safety and accuracy, is suitable for testing different types of oil, provides precise oil level control, reduces manual intervention, and enhances operational comfort and flexibility.
Smart Images
Figure CN120741558B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of oil product testing technology, specifically to an online oil product testing device. Background Technology
[0002] In actual oil manufacturing processes, as the production line processes oil products, staff need to periodically sample and test the oil. For example, the flash point of heavy oil directly affects its safety. The principle of oil flash point testing is based on the detection of the critical point of volatile vapor concentration. By precisely controlling the heating rate and ignition timing, it captures the lowest temperature at which a combustible mixture will ignite instantaneously upon contact with an open flame. Current online oil testing devices generate a large amount of vapor as the oil container heats up before ignition testing, which not only affects the health of staff but also easily interferes with the accuracy of the actual flash point test due to the accumulated vapor. It is not convenient to automatically control the vapor evaporation and diffusion during non-testing periods, nor is it convenient to limit or prompt staff to preheat before heavy oil testing. Directly pouring the oil into the container can easily generate bubbles due to excessive viscosity, affecting the accuracy of oil level control and heating efficiency. It is also not convenient to quickly overflow and adjust the standard oil level value. The accuracy of manually observing the poured oil level is relatively large and lacks flexibility.
[0003] Therefore, we propose an online oil product testing device. Summary of the Invention
[0004] The purpose of this invention is to provide an online oil product testing device to solve the problem mentioned in the background art that current online oil product testing devices are not convenient for automatic control to prevent vapor volatilization and diffusion during non-testing periods.
[0005] To achieve the above objectives, the present invention provides the following technical solution: an online oil product testing device, comprising a testing mounting component, an elastic support component mounted on the testing mounting component, the testing mounting component being used to collect the oil product to be tested; a flash point control component mounted on the elastic support component; the flash point control component being used to prevent evaporation and diffusion; a limit control component inserted into the testing mounting component; the limit control component being used to limit the flash point control component; an overflow portion mounted on the testing mounting component; the overflow portion being used to drain the oil; a buoyancy detection component installed inside the testing mounting component; the buoyancy detection component being used to detect the oil level; the testing mounting component includes: a suction mounting ring, a handle, and an indicator light, the handle being fixedly mounted on the suction mounting ring; the indicator light being fixedly mounted on the handle; the inner side of the suction mounting ring having an open structure; and the suction mounting ring having an insertion hole.
[0006] Preferably, the testing mounting component further includes: an oil reservoir, a suction port, an overflow port, a suction pipe, and a junction block. The oil reservoir is fixedly mounted on the suction mounting ring. A ring of suction ports is formed on the oil reservoir, and this ring of suction ports connects to the suction mounting ring. A ring of overflow ports is formed on the oil reservoir. An annular protrusion is provided on the inner side of the oil reservoir. A suction pipe is fixedly mounted on the suction mounting ring. A suction fan is connected to the outside of the suction pipe. The suction pipe is a flexible hose. A junction block is fixedly mounted on the back of the suction mounting ring by bolts. The suction pipe connects to the suction mounting ring. The oil reservoir is used to hold oil. The oil reservoir is used to insert into the flash point tester.
[0007] Preferably, the elastic support includes: an elastic support cylinder and a compression spring, and two elastic support cylinders are fixedly installed on the suction mounting ring, with a compression spring fixedly installed inside each of the two elastic support cylinders.
[0008] Preferably, the flash point control component includes: a lower pressure cylinder, a lower pressure plate, an inclined plate, and a lifting contact plate. Lower pressure cylinders are slidably sleeved on two of the elastic support cylinders; two lower pressure springs are located inside the lower pressure cylinders; a lower pressure plate is fixedly installed on the two lower pressure cylinders; the tops of the two lower pressure springs are fixedly installed on the bottom of the lower pressure plate; an inclined plate is fixedly installed at the end of the lower pressure plate, and the inclined plate is lower than the lower pressure plate; the lower pressure plate is used to be pressed down by the ignition rod of the flash point tester; the lower pressure plate is fixedly installed at the bottom of the lower pressure plate by bolts; the bottom of the lifting contact plate has a bent structure; the lifting contact plate is aligned with the contact block; the lifting contact plate, the contact block, and the externally connected suction fan of the exhaust pipe are connected in series with a power supply.
[0009] Preferably, the limiting control component includes: a positioning post and a positioning bolt, wherein the positioning post is inserted into a hole provided on the suction mounting ring; the positioning bolt is inserted into the positioning post; the positioning bolt is threadedly connected to the flash point tester platform, and the positioning post is placed on the flash point tester.
[0010] Preferably, the overflow section includes: an overflow collection shell, which is fixedly sleeved on the outside of the suction mounting ring; the overflow collection shell has an opening on its inner side; the opening on the inner side of the overflow collection shell communicates with the overflow hole; the overflow collection shell is used to prevent the oil level from being too high.
[0011] Preferably, the overflow section further includes: an overflow hose, which is fixedly installed on the overflow collection shell; the overflow hose is a flexible hose; the overflow hose is used to drain excess oil; the overflow collection shell is placed on the platform of the flash point tester.
[0012] Preferably, the buoyancy detection component includes: an isolation mesh plate and a float ring, wherein the isolation mesh plate is slidably sleeved inside the oil reservoir; the isolation mesh plate is located above the raised ring on the inner side of the oil reservoir; a float ring is fixedly installed at the bottom of the isolation mesh plate; the float ring has a hollow structure; the isolation mesh plate has mesh holes; the isolation mesh plate is used to limit the viscosity of the oil; and the float ring is used to float on the oil surface.
[0013] Preferably, the buoyancy detection component further includes: a ceramic column and a movable electrical contact ring, wherein a ring of ceramic columns is fixedly installed on the isolation mesh plate; a movable electrical contact ring is fixedly installed on the ring of ceramic columns, and the movable electrical contact ring is located above the overflow collection shell; the movable electrical contact ring is located inside the oil reservoir.
[0014] Preferably, the buoyancy detection component further includes: a fixed electrical contact ring and a plastic ring, wherein two fixed electrical contact rings are provided, and the two fixed electrical contact rings are fixedly installed on the top of the oil reservoir; the two fixed electrical contact rings are insulated from each other; the two fixed electrical contact rings are located above the movable electrical contact ring; a plastic ring is fixedly installed on the inner side of the two fixed electrical contact rings; the movable electrical contact ring is located on the outer side of the plastic ring; and the two fixed electrical contact rings and the indicator light are connected in series with a power supply.
[0015] Compared with the prior art, the beneficial effects of the present invention are:
[0016] This invention employs a flash point control component that, in conjunction with a suction mounting ring, automatically controls the extraction of vapors generated during oil heating and evaporation. This effectively improves the safety of actual flash point testing. It ensures that during flash point testing, the oil reservoir only generates vapor when the ignition rod passes over it, allowing for observation of the ignition process. This prevents large amounts of vapor generated before the reservoir reaches its flash point during heating, which could contaminate the flash point tester and pose safety hazards such as explosions. The invention is suitable for testing various oils, including both low and high flash point oils. Its simple structure ensures a reasonable range of vapor volume and maintains the required vapor temperature during ignition testing. The automatic control is achieved by utilizing the oscillating characteristic of the ignition rod, enhancing operator comfort.
[0017] The overflow section allows staff to easily control the oil level, enabling normal oil filling and direct discharge of excess oil. This effectively ensures operational flexibility, eliminates the need for manual visual inspection, and ensures precise oil level control, guaranteeing that the volume of the vapor space above the oil meets standards.
[0018] The isolation mesh plate, with its limited diameter, prevents workers from directly adding unheated, viscosity-reduced heavy oil into the oil container. Unheated heavy oil has poor flowability and struggles to pass quickly through the mesh plate, limiting detection efficiency. This prompts workers to heat the oil first to improve its flowability. Additionally, the structure utilizes a buoyancy detection element to provide real-time alerts for oil level drops, indicated by a warning light. This is particularly useful for detecting the flash point of heavy oil, as air bubbles can easily form inside after filling, affecting oil level accuracy. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of an online oil product testing device according to the present invention;
[0020] Figure 2 This is a schematic diagram of the bottom structure of an online oil product detection device according to the present invention;
[0021] Figure 3 This is a cross-sectional view of the internal structure of an online oil product testing device according to the present invention;
[0022] Figure 4 This is a schematic diagram of the structure of the testing and installation component of the present invention;
[0023] Figure 5 This is a schematic diagram of the overflow section structure of the present invention;
[0024] Figure 6 This is a schematic diagram of the flash point control component of the present invention;
[0025] Figure 7 For the present invention Figure 2 Enlarged view of the structure of region C in the middle;
[0026] Figure 8 For the present invention Figure 3 Enlarged view of the structure of region D in the middle;
[0027] Figure 9 This is a schematic diagram of the buoyancy detection component of the present invention;
[0028] Figure 10 This is a schematic diagram of the limit control component of the present invention.
[0029] In the diagram: 1. Inspection and installation components; 101. Suction installation ring; 102. Hand lever; 103. Indicator light; 104. Oil can; 1041. Suction port; 1042. Overflow port; 105. Suction pipe; 106. Electrical contact block; 2. Elastic support components; 201. Elastic support cylinder; 202. Downward pressure spring; 3. Flash point control components; 301. Downward pressure cylinder; 302. Downward pressure plate; 3021. Sloping panel; 303. Lifting electrical contact plate; 4. Limit control components; 401. Positioning column; 402. Positioning bolt; 5. Overflow section; 501. Overflow collection shell; 502. Overflow hose; 6. Buoyancy detection components; 601. Isolation mesh plate; 602. Float ring; 603. Ceramic column; 604. Moving electrical contact ring; 605. Fixed electrical contact ring; 606. Plastic ring. Detailed Implementation
[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0031] Example 1: Please refer to Figures 1 to 10 As shown:
[0032] This invention provides a technical solution: an online oil product testing device, comprising a testing mounting component 1, an elastic support component 2 mounted on the testing mounting component 1, the testing mounting component 1 being used to collect the oil product to be tested; a flash point control component 3 mounted on the elastic support component 2; the flash point control component 3 being used to prevent evaporation and diffusion; a limit control component 4 inserted into the testing mounting component 1; the limit control component 4 being used to limit the flash point control component 3; an overflow part 5 mounted on the testing mounting component 1; the overflow part 5 being used to drain the oil; a buoyancy detection component 6 mounted inside the testing mounting component 1; the buoyancy detection component 6 being used to detect the oil level; the testing mounting component 1 includes: a suction mounting ring 101, a handle 102, and an indicator light 103, the handle 102 being fixedly mounted on the suction mounting ring 101; the indicator light 103 being fixedly mounted on the handle 102; the inner side of the suction mounting ring 101 having an open structure; and the suction mounting ring 101 having an insertion hole.
[0033] The testing mounting component 1 further includes: an oil reservoir 104, a suction port 1041, an overflow port 1042, a suction pipe 105, and a power connector 106. The oil reservoir 104 is fixedly mounted on the suction mounting ring 101. A ring of suction ports 1041 is formed on the oil reservoir 104, and the ring of suction ports 1041 connects to the suction mounting ring 101. A ring of overflow ports 1042 is formed on the oil reservoir 104. An annular protrusion is provided on the inner side of the oil reservoir 104. The suction mounting ring 101... A suction pipe 105 is fixedly installed on the top; a suction fan is connected to the suction pipe 105; the suction pipe 105 is a flexible hose; a power connector 106 is fixedly installed on the back of the suction mounting ring 101 by bolts; the suction pipe 105 connects to the suction mounting ring 101; an oil can 104 is used to hold oil; the oil can 104 is used to insert a flash point tester; the suction fan connected to the suction pipe 105 is connected to an external power switch; the elastic support 2 includes: an elastic support cylinder 201 and a downward pressure spring 202, which... Two elastic support cylinders 201 are fixedly installed on the suction mounting ring 101, and each of the two elastic support cylinders 201 has a downward pressure spring 202 fixedly installed inside. The flash point control component 3 includes: a downward pressure cylinder 301, a downward pressure plate 302, an inclined plate 3021, and a lifting contact plate 303. The downward pressure cylinders 301 are slidably sleeved on the two elastic support cylinders 201. The two downward pressure springs 202 are located inside the downward pressure cylinders 301. The downward pressure plate 302 is fixedly installed on the two downward pressure cylinders 301. The tops of the two downward pressure springs 202 are fixedly installed on the bottom of the downward pressure plate 302. The inclined plate 3021 is fixedly installed at the end of the downward pressure plate 302, and the inclined plate 3021 is lower than the downward pressure plate 302. The downward pressure plate 302 is used to be pressed down by the ignition rod of the flash point tester. The downward pressure plate 302 is fixedly installed at the bottom of the downward pressure plate 302 by bolts. The bottom of the lifting contact plate 303 has a bent structure. The lifting contact plate 303 is aligned with the contact block 106.The lifting junction box 303, junction block 106, and external suction pipe 105 are connected to a series power supply for the suction fan. Using a flash point control component 3, it can automatically control the suction of vapors generated by the heating and evaporation of the oil, in conjunction with the suction mounting ring 101. This effectively improves the safety of actual flash point testing. It ensures that during flash point testing, the oil reservoir 104 only generates vapor when the ignition rod passes through it, allowing for observation of the ignition process. This prevents large amounts of vapor generated before the oil reservoir 104 reaches its flash point during heating, which could contaminate the flash point tester and potentially cause explosions. This design is suitable for testing various oils, including both low and high flash point oils. The structure is simple to control, ensuring a reasonable range of vapor volume. It also maintains the vapor temperature during ignition testing. The automatic control is achieved by utilizing the oscillating characteristic of the ignition rod, improving operator comfort. As the heating wire inside the flash point tester heats the oil in the reservoir 104, the vapors are drawn during the process... The external suction fan connected to the air pipe 105 is kept powered on for suction. Suction is achieved through the suction mounting ring 101 and the suction port 1041, thus removing the vapor generated during the flash point test interval and before the test. The suction pipe 105 leads outdoors. As the ignition rod of the flash point tester swings, when the flame at its end passes the oil container 104, the ignition rod first passes the inclined plate 3021. Utilizing the inclined structure of the side of the inclined plate 3021, as it slides past the inclined plate 3021, it presses down on the lower pressure plate 302, compressing the lower pressure spring. Spring 202, at this time, the lifting contact plate 303 is driven down and separated from the contact block 106, the suction fan connected to the exhaust pipe 105 can be de-energized, and the absorption of oil vapor stops, the oil can evaporate upwards. Combined with the time required for the displacement of the ignition rod during the flash point tester's swing, this ensures that the oil vapor has time to diffuse upwards to above the flame height. This process is repeated, with the oil temperature rising, and tests are performed every few degrees until the oil vapor can be observed to ignite. The temperature of the oil at this point is the flash point temperature.
[0034] The limiting control component 4 includes a positioning post 401 and a positioning bolt 402. The positioning post 401 is inserted into a hole on the suction mounting ring 101; the positioning bolt 402 is inserted into the positioning post 401; the positioning bolt 402 is threadedly connected to the flash point tester platform, and the positioning post 401 is placed on the flash point tester. The overflow part 5 includes an overflow collection shell 501, which is fixedly sleeved on the outside of the suction mounting ring 101; the overflow collection shell 501 has an opening on its inner side; the opening on the inner side of the overflow collection shell 501 connects to the overflow hole 1042; the overflow collection shell 501 is used to prevent the oil level from being too high; the overflow part 5 also includes an overflow hose 502, which is fixedly installed on the overflow collection shell 501; the overflow hose 502 The overflow hose 502 is used to drain excess oil. The overflow collection shell 501 is placed on the platform of the flash point tester. The limit control component 4 facilitates the positioning and detection of the installation component 1, improving the stability during testing. The structure is simple and can prevent the oil can 104 from rotating randomly. The overflow part 5 allows the operator to control the oil level, allowing for normal oil filling. Excess oil can be directly overflowed and discharged, effectively ensuring operational flexibility without the need for manual visual observation. The oil level is accurate, ensuring that the volume of the vapor space above the oil meets the standard, avoiding the flash point value from deviating from the true level, supporting data reliability, and reducing the defect rate. The overflow hose 502 can be externally received and collected in the oil collection tank. The operation is simple and convenient for the operator, without the need for precise visual observation of the scale.
[0035] In Example 2, based on Example 1, the buoyancy detection component 6 includes: an isolation mesh plate 601 and a float ring 602. The isolation mesh plate 601 is slidably sleeved inside the oil reservoir 104; the isolation mesh plate 601 is located above the raised ring on the inner side of the oil reservoir 104; the float ring 602 is fixedly installed at the bottom of the isolation mesh plate 601; the float ring 602 has a hollow structure; the isolation mesh plate 601 has mesh holes; the isolation mesh plate 601 is used to limit the viscosity of the oil; the float ring 602 is used to float on the oil surface; the buoyancy detection component 6 also includes: a ceramic column 603 and a movable contact ring 604, which are fixed on the isolation mesh plate 601. A ring of ceramic pillars 603 is installed; a movable contact ring 604 is fixedly installed on the ring of ceramic pillars 603, and the movable contact ring 604 is located above the overflow collection shell 501; the movable contact ring 604 is located inside the oil reservoir 104; the buoyancy detection component 6 also includes: a fixed contact ring 605 and a plastic ring 606, two fixed contact rings 605 are provided, and the two fixed contact rings 605 are fixedly installed on the top of the oil reservoir 104; the two fixed contact rings 605 are insulated from each other; the two fixed contact rings 605 are located above the movable contact ring 604; the inner side of the two fixed contact rings 605 is fixedly installed with... The device includes a plastic ring 606; a movable electrical contact ring 604 located outside the plastic ring 606; two fixed electrical contact rings 605 and an indicator light 103 connected in series with a power supply. The isolation mesh plate 601, with its limited diameter, restricts the direct addition of unheated, viscosity-reduced heavy oil into the oil container 104. Unheated heavy oil has poor flowability and cannot quickly pass through the isolation mesh plate 601, limiting detection efficiency. This prompts the operator to first heat the oil to improve its flowability. Simultaneously, this structure utilizes the buoyancy detection element 6 to detect the oil in real time. The indicator light 103 can be used to alert staff when the oil level drops. This is especially useful for heavy oil flash point testing. After heavy oil is added, air bubbles are easily generated inside. When the oil level drops due to the rising of these bubbles during the flash point test, or when the oil level is not high enough, the indicator light can provide timely warnings so that staff can replenish the oil promptly. The operation is simple and convenient. If the oil level is too low, the float ring 602 will still float on the oil surface, but its height will decrease. The two fixed contact rings 605 will no longer be contacted and connected by the movable contact ring 604, and the indicator light 103 will provide a warning.
[0036] The working principle of this embodiment is as follows: First, the preheated heavy oil is poured into the oil container 104. At this time, the buoyancy of the oil causes the float ring 602 to rise, moving the movable contact ring 604 to contact the two fixed contact rings 605. The two fixed contact rings 605 are then connected by the conductor of the movable contact ring 604, and the indicator light 103 illuminates to indicate this. If the oil level is too low, the float ring 602 will still float on the oil surface, but its height will decrease, and the two fixed contact rings 605 will no longer be connected by the movable contact ring 604. The indicator light 103 will then turn off. After the oil sample taken from the production line is directly poured into the oil container 104, the oil level inside the container rises above the oil level in the container. At 104°C, the oil can overflow from the overflow hole 1042, be collected by the overflow collection shell 501, and then discharged through the overflow hose 502. The overflow hose 502 can be externally collected in the oil collection tank. The operation is simple and convenient for the staff. Holding the handle 102, the oil can 104 is inserted into the flash point tester. The positioning post 401 is a common setting in existing flash point testers. First, screw holes are set on the platform of the flash point tester. The positioning post 401 is installed on the platform of the flash point tester through the positioning bolt 402. The positioning bolt 402 facilitates fastening, installation, and disassembly. The suction installation ring 101 is inserted into the positioning post 401 for limiting, ensuring that the lower pressure plate 302 is aligned with the ignition rod of the flash point tester. The heating wire inside the flash point tester heats the oil in the oil container 104. The suction fan connected to the external suction pipe 105 remains powered, drawing air through the suction mounting ring 101 and suction port 1041. This achieves the extraction of the working interval for flash point testing and the vapor generated before the test. The suction pipe 105 leads outdoors. As the ignition rod of the flash point tester swings, its flame passes the oil container 104. At this time, the ignition rod first passes the inclined plate 3021. Utilizing the inclined structure of the side of the inclined plate 3021, as it slides past the inclined plate 3021, it presses down the lower pressure plate 302, compressing the lower pressure spring 202. Simultaneously, the lifting contact plate 303 is moved downwards, connecting with the contact block 106. Once separated, the external suction fan connected to the exhaust pipe 105 can be de-energized, stopping the absorption of oil vapor. The oil can then evaporate upwards. The displacement of the ignition rod during the flash point tester's swing process requires time, ensuring the oil vapor has time to diffuse upwards above the flame height. This process is repeated, with tests performed every few degrees Celsius as the oil temperature rises. The specific interval depends on the oil testing requirements, until the oil vapor can be observed to ignite. At this point, the oil temperature is the flash point temperature. Once the flash point tester's ignition rod returns to its original position and is misaligned with the lower pressure plate 302, and the lower pressure plate 302 is no longer pressed down, the external suction fan connected to the exhaust pipe 105 will continue to draw air to prevent vapor from spreading.
[0037] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0038] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An online oil product testing device, comprising a testing mounting component, wherein an elastic support component is mounted on the testing mounting component, characterized in that: The detection mounting component is used to collect the oil sample to be tested; a flash point control component is installed on the elastic support component; the flash point control component is used to prevent evaporation and diffusion. A limit control component is inserted into the detection mounting component; the limit control component is used to limit the detection mounting component. The testing installation components include: a suction mounting ring, a handle, an indicator light, an oil reservoir, a suction port, an overflow port, a suction pipe, and a power connector; the inner side of the suction mounting ring is open; the oil reservoir is fixedly mounted on the suction mounting ring; a ring of suction ports is formed on the oil reservoir and connects to the suction mounting ring; a suction pipe is fixedly mounted on the suction mounting ring; a suction fan is connected to the outside of the suction pipe; a power connector is fixedly mounted on the back of the suction mounting ring by bolts; the suction pipe connects to the suction mounting ring; the oil reservoir is used to hold oil; the oil reservoir is used to insert into a flash point tester. The elastic support component includes: an elastic support cylinder and a downward pressure spring, and two elastic support cylinders are fixedly installed on the suction mounting ring; The flash point control component includes: a lower pressure cylinder, a lower pressure plate, an inclined plate, and a lifting contact plate. Lower pressure cylinders are slidably sleeved on two elastic support cylinders. Two lower pressure springs are located inside the lower pressure cylinders. Lower pressure plates are fixedly installed on the two lower pressure cylinders. The tops of the two lower pressure springs are fixedly installed on the bottom of the lower pressure plate. An inclined plate is fixedly installed at the end of the lower pressure plate, and the inclined plate is lower than the lower pressure plate. The lifting contact plate is fixedly installed on the bottom of the lower pressure plate by bolts. The bottom of the lifting contact plate has a bent structure. The lifting contact plate is aligned with a contact block. The lifting contact plate, the contact block, and the externally connected suction fan are connected in series with a power supply. When the flash point tester heats the oil in the reservoir, the external suction fan connected to the suction pipe remains powered on during the process. The suction is achieved through the suction ring and suction port, removing the vapor generated before the test and monitoring the working interval for flash point testing. The suction pipe leads outdoors. When the flash point tester's ignition rod swings, its flame passes over the oil reservoir. The ignition rod first passes the inclined panel, then slides over it, compressing the lower pressure plate and spring. This causes the lifting contact plate to move downwards, separating from the contact block. The external suction fan is then de-energized, stopping the absorption of oil vapor. The oil can then evaporate upwards. The time required for the ignition rod's swing ensures that the oil vapor has time to diffuse upwards above the flame height. This process is repeated, with tests performed every few degrees Celsius as the oil temperature rises, until the oil vapor is observed to ignite. This temperature is the flash point.
2. The online oil product detection device according to claim 1, characterized in that: The detection mounting component is equipped with an overflow section for draining oil. A buoyancy detection component is installed inside the detection mounting component for detecting oil level. A handle is fixedly mounted on the suction mounting ring. An indicator light is fixedly mounted on the handle. An insertion hole is provided on the suction mounting ring. An overflow hole is formed around the oil reservoir. An annular protrusion is provided on the inner side of the oil reservoir. The suction pipe is a flexible hose.
3. The online oil product testing device according to claim 1, characterized in that: Two elastic support cylinders each have a compression spring fixedly installed inside.
4. The online oil product detection device according to claim 1, characterized in that: The limiting control component includes: a positioning post and a positioning bolt. The positioning post is inserted into a hole provided on the suction mounting ring; the positioning bolt is inserted into the positioning post; the positioning bolt is threadedly connected to the platform of the flash point tester, and the positioning post is placed on the flash point tester.
5. The online oil product detection device according to claim 2, characterized in that: The overflow section includes: an overflow collection shell, which is fixedly sleeved on the outside of the suction mounting ring; an opening is provided on the inner side of the overflow collection shell; the opening on the inner side of the overflow collection shell is connected to the overflow hole; the overflow collection shell is used to prevent the oil level from being too high.
6. The online oil product detection device according to claim 5, characterized in that: The overflow section further includes: an overflow hose, which is fixedly installed on the overflow collection shell; the overflow hose is used to drain excess oil; the overflow collection shell is placed on the platform of the flash point tester.
7. The online oil product testing device according to claim 5, characterized in that: The buoyancy detection component includes: an isolation mesh plate and a float ring. The isolation mesh plate is slidably sleeved inside the oil reservoir. The isolation mesh plate is located above an annular protrusion on the inner side of the oil reservoir. A float ring is fixedly installed at the bottom of the isolation mesh plate. The float ring has a hollow structure. The isolation mesh plate has mesh holes. The isolation mesh plate is used to limit the viscosity of the oil. The float ring is used to float on the oil surface.
8. The online oil product detection device according to claim 7, characterized in that: The buoyancy detection device further includes: a ceramic column and a movable electrical contact ring. A ring of ceramic columns is fixedly installed on the isolation mesh plate; a movable electrical contact ring is fixedly installed on the ring of ceramic columns, and the movable electrical contact ring is located above the overflow collection shell; the movable electrical contact ring is located inside the oil can.
9. The online oil product detection device according to claim 8, characterized in that: The buoyancy detection device further includes: two fixed electrical contact rings and two plastic rings. The two fixed electrical contact rings are fixedly installed on the top of the oil reservoir. The two fixed electrical contact rings are insulated from each other. The two fixed electrical contact rings are located above the movable electrical contact ring. The plastic ring is fixedly installed inside the two fixed electrical contact rings. The movable electrical contact ring is located outside the plastic ring. The two fixed electrical contact rings and the indicator light are connected in series with a power supply. When the oil level is too low, the float ring can float on the oil surface, but its own height decreases. The two fixed electrical contact rings are no longer contacted and connected by the movable electrical contact ring, and the indicator light goes out.