Automatic tester for total acid value of jet fuel

Abstract

The utility model relates to an automatic tester for the total acid value of jet fuel, which comprises a machine table, a titration device, an aeration device, a light source, a reflecting mirror, a camera and a controller, and a test station and a collection station are arranged on the machine table; the aeration device comprises an aeration pipe, a gas supply control element, a moving mechanism and a cleaning mechanism, the moving mechanism drives the aeration pipe to move, and the aeration pipe is communicated with a nitrogen source through the gas supply control element; the cleaning mechanism comprises an inner flushing assembly for flushing the inner wall of the aeration pipe and an outer flushing assembly for flushing the outer wall of the aeration pipe. After the test sample is measured, the moving mechanism controls the aeration pipe to lift and move to the collecting station, and then controls the inner flushing assembly and the outer flushing assembly to start, so that the inside and the outside of the aeration pipe can be flushed, and flushing wastewater is collected at the collecting station. And the flushed aeration pipe is translated to the test station again to wait for starting the next measurement. Moving and cleaning of the aeration pipe are controlled by the controller, automatic execution can be achieved, and labor is saved.

Description

Technical Field

[0001] This utility model relates to the field of testing equipment technology, and in particular to an automatic analyzer for the total acid value of jet fuel. Background Technology

[0002] According to national standards, two methods are provided for determining the total acid value of jet fuel: manual and automatic. The manual method uses a titration flask with an integrally formed side branch for introducing nitrogen gas. The automatic method involves inserting a nitrogen aeration tube into the sample bottle. Both the side branch and the nitrogen aeration tube must have their lower ends submerged in the sample. To ensure accuracy, the instrument must be rinsed with deionized water after each measurement. For the manual method, only the titration flask needs to be cleaned. However, for the automatic method, because the sample bottle and the nitrogen aeration tube are independent, both need to be cleaned separately.

[0003] Previously, cleaning nitrogen aeration tubes involved either designing the end of the tube (the part that contacts the sample) to be detachable for cleaning, or placing a container at the testing station and rinsing the tube directly on the instrument, collecting the rinse water in the container. However, both methods relied on manual operation and were relatively cumbersome. Utility Model Content

[0004] The purpose of this invention is to provide an automatic total acid value analyzer for jet fuel, which can automatically clean the aeration pipe.

[0005] To achieve the above objectives, this utility model discloses an automatic total acid value analyzer for jet fuel, comprising a machine base, a titration device, an aeration device, a light source, a reflector, a camera, and a controller. The machine base is equipped with a testing station for placing sample bottles and a collection station for collecting wastewater. The light source is located on one side of the testing station, the reflector is located on the other side of the testing station, and the camera is positioned above the reflector. The angle between the camera and the reflector is equal to the angle between the light source and the reflector. The aeration device includes an aeration pipe, an air supply control element, a moving mechanism, and a cleaning mechanism. The moving mechanism drives the aeration pipe to move up and down and between the testing station and the collection station. The aeration pipe is connected to a nitrogen source via the air supply control element. The cleaning mechanism includes an internal rinsing component for rinsing the inner wall of the aeration pipe and an external rinsing component for rinsing the outer wall of the aeration pipe. The titration device, light source, camera, moving mechanism, air supply control element, internal rinsing component, and external rinsing component are all connected to the controller.

[0006] With the above setup, after the sample measurement is completed, the moving mechanism controls the aeration pipe to rise and move to the collection station. Then, it controls the activation of the internal and external rinsing components to rinse the inside and outside of the aeration pipe, and the rinsing wastewater is collected at the collection station. After rinsing, the aeration pipe is moved back to the testing station, ready for the next measurement. The movement and cleaning of the aeration pipe are controlled by the controller and can be performed automatically, saving labor. In addition, the camera captures the color of the sample titration process at the testing station through a reflector, making the camera lens less susceptible to contamination.

[0007] Preferably, the internal flushing assembly includes a first three-way valve and a first pipe. The common end of the first three-way valve is connected to the upper end of the aeration pipe, the normally open end of the first three-way valve is connected to the air supply control element, and the normally closed end of the first three-way valve is connected to the first pipe. The external flushing assembly includes a diversion ring, a first control valve, and a second pipe. The diversion ring is sleeved on the outer circumference of the aeration pipe and has an inner cavity and several water outlet holes. The water outlet holes communicate with the inner cavity and are evenly distributed circumferentially on the diversion ring. The inner cavity is connected to the second pipe via the first control valve. Both the first pipe and the second pipe are connected to a cleaning water source. This configuration of the internal and external flushing assemblies is simple in structure and easy to install.

[0008] Preferably, the outlet hole is oriented perpendicular to the length of the aeration pipe. A water-blocking cover is also provided on the diversion ring. The upper end of the water-blocking cover is tightly connected to the outer wall of the aeration pipe, and the lower end of the water-blocking cover is spaced apart from the outer wall of the aeration pipe. The lower end of the water-blocking cover and the outer wall of the aeration pipe cooperate to form a water outlet channel. This arrangement ensures that the water flow for cleaning the outer wall of the aeration pipe will primarily flow along the outer wall of the aeration pipe, preventing splashing.

[0009] Preferably, the system also includes a second three-way valve and a third pipeline. The common end of the second three-way valve is connected to the first and second pipelines, the normally open end of the second three-way valve is connected to the cleaning water source, and the normally closed end of the second three-way valve is connected to the air source or air supply equipment. With this configuration, air can be introduced after the aeration pipe is flushed with water, accelerating the drying process of the aeration pipe and preventing residual cleaning water on the aeration pipe from interfering with the next measurement.

[0010] Preferably, the diversion ring is connected to a moving mechanism. This arrangement facilitates the installation of the external flushing assembly.

[0011] Preferably, the collection station is a water storage tank integrated into the machine, with a discharge port at the bottom connecting to the outside of the machine, and a valve optionally installed on the discharge port; alternatively, the collection station is a water storage tank positioned within the machine. This arrangement facilitates the collection and treatment of cleaning wastewater.

[0012] Preferably, the system also includes a door assembly for constructing a water-blocking space independently or in conjunction with the machine to construct a water-blocking space. The door assembly is located at the collection station and is connected to the controller. By providing the door assembly, the aeration pipe can be isolated from the machine during cleaning, further ensuring the dryness and cleanliness of other parts of the machine.

[0013] Preferably, the gate assembly includes a fixed barrier, a movable barrier, and a barrier drive component. The fixed barrier is installed in the machine base and has a clearance opening for avoiding the aeration pipe. The movable barrier is movably connected to the fixed barrier or the machine base and can block the clearance opening. The barrier drive component drives the movable barrier to move. With this configuration, the water-blocking space is relatively independent of the machine base, reducing the risk of corrosion from corrosive reagents (such as potassium hydroxide and barium hydroxide) and facilitating the replacement of the gate assembly.

[0014] Preferably, the device further includes an electromagnetic stirring apparatus, which comprises an electromagnetic generator and a rotor (the rotor is placed in the sample vial). The electromagnetic generator is positioned below the testing station and drives the rotor to rotate; the electromagnetic generator is connected to a controller. By incorporating the electromagnetic stirring apparatus, reagents and samples can be mixed rapidly.

[0015] Preferably, the rotor is rotatably connected to the lower end of the aeration pipe; the collection station is also equipped with a rotor flushing assembly for flushing the rotor, the rotor flushing assembly including a second control valve and at least one nozzle, the nozzle being connected to a cleaning water source via a pipe of the second control valve. With this configuration, the rotor can also achieve automatic flushing, saving labor.

[0016] This utility model has the following beneficial effects:

[0017] After the sample measurement is completed, the moving mechanism controls the aeration pipe to rise and move to the collection station. Then, the internal and external rinsing components are activated to rinse the inside and outside of the aeration pipe, and the rinsing wastewater is collected at the collection station. After rinsing, the aeration pipe is moved back to the testing station, ready for the next measurement. The movement and cleaning of the aeration pipe are controlled by the controller and can be performed automatically, saving labor. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the pipeline connection of this utility model.

[0020] Figure 3 This is a schematic diagram showing the connection between the flow divider ring and the aeration pipe.

[0021] Figure 4 This is a schematic diagram of the door component setup.

[0022] Explanation of symbols for main components:

[0023] Machine 10, test station 11, water storage tank 12, second control valve 13, nozzle 14, fixed enclosure 15, movable enclosure 16, enclosure drive unit 17, clearance opening 18.

[0024] Light source 21, reflector 22, camera 23;

[0025] Titration apparatus 30;

[0026] Electromagnetic generator 41, rotor 42;

[0027] Aeration pipe 51, air supply control element 52, moving mechanism 53, first three-way valve 54, first pipeline 55, flow divider ring 56, first control valve 57, second pipeline 58, second three-way valve 59, third pipeline 5a, water outlet 5b, water baffle 5c, water outlet channel 5d.

[0028] 60 sample vials;

[0029] Clean water source 71, gas source 72, nitrogen source 73. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0031] like Figures 1-4 As shown, this utility model discloses an automatic total acid value analyzer for jet fuel, comprising a machine base 10, a titration device 30, an aeration device, an electromagnetic stirring device, a light source 21, a reflector 22, a camera 23, and a controller. The machine base 10 has a testing station 11 for placing sample bottles 60 and a collection station for collecting wastewater. Both the testing station 11 and the collection station are located in a relatively enclosed inner cavity within the machine base 10, which is opened or closed via a door. The testing station 11 is a placement platform capable of positioning the sample bottles 60. The collection station is a water storage tank positioned within the machine base 10. Alternatively, the collection station can be a water storage tank integrated into the machine base 10, with a discharge port at the bottom connecting to the outside of the machine base 10. A manual valve can be optionally installed on the discharge port.

[0032] The light source 21 is located on one side of the test station 11, and the reflector 22 is located on the other side of the test station 11. The reflector 22 is positioned at a 45° angle to the horizontal. The camera 23 is positioned above the reflector 22, and the angle between the camera 23 and the reflector 22 is equal to the angle between the light source 21 and the reflector 22. By elevating the camera 23, contamination of the camera lens can be avoided, and the cleaning and maintenance of the instrument can be facilitated. The light source 21 and the camera 23 are connected to the controller.

[0033] The titration apparatus 30 is existing technology and generally includes a burette and a pump for quantitative liquid supply (such as a metering pump), which will not be described in detail here. The titration apparatus 30 is connected to a controller.

[0034] The electromagnetic stirring device includes an electromagnetic generator 41 and a rotor 42. The rotor 42 is placed inside the sample vial 60 for use. The electromagnetic generator 41 is located below the testing station 11 (placement platform) and drives the rotor 42 to rotate. The electromagnetic generator 41 is connected to a controller. By setting up the electromagnetic stirring device, reagents and samples can be mixed quickly.

[0035] The aeration device includes an aeration pipe 51, an air supply control element 52, a moving mechanism 53, and a cleaning mechanism. The moving mechanism 53 drives the aeration pipe 51 to move up and down and between the test station 11 and the collection station. That is, the moving mechanism 53 is an XZ dual-axis moving platform, which is a mature existing technology and will not be elaborated further. The moving mechanism 53 is connected to the controller. The aeration pipe 51 is locked at the end of the stroke of the moving mechanism 53. The aeration pipe 51 is a section of rigid, corrosion-resistant pipe, such as glass. The lower end of the aeration pipe 51 can be inserted into the sample bottle 60 located at the test station 11. The upper end of the aeration pipe 51 is connected to a nitrogen source 73 via the air supply control element 52. The air supply control element 52 can be an electric valve, which is connected to the controller.

[0036] The cleaning mechanism includes an internal flushing component for flushing the inner wall of the aeration pipe 51 and an external flushing component for flushing the outer wall of the aeration pipe 51. In a preferred embodiment (Example 1), the internal flushing component includes a first three-way valve 54 and a first pipe 55. The first three-way valve 54 is connected to a controller. The common end of the first three-way valve 54 is connected to the upper end of the aeration pipe 51, the normally open end of the first three-way valve 54 is connected to the outlet of the air supply control element 52, and the normally closed end of the first three-way valve 54 is connected to one end of the first pipe 55. The other end of the first pipe 55 is connected to a cleaning water source. It should be noted that the cleaning water source mentioned here needs to have a certain water pressure to generate water supply power; a water pump can be added if necessary (the water pump needs to be connected to the controller).

[0037] The external flushing assembly includes a diversion ring 56, a first control valve 57, and a second pipe 58. The first control valve 57 is connected to a controller. The diversion ring 56 is sleeved on the outer circumference of the aeration pipe 51, and the diversion ring 56 is locked at the end of the stroke of the moving mechanism 53 to prevent it from falling off and to facilitate installation. The diversion ring 56 has an inner cavity and several water outlet holes 5b. The water outlet holes 5b communicate with the inner cavity, and the water outlet holes 5b are evenly distributed around the circumference of the diversion ring 56. The water outlet direction of the water outlet holes 5b is perpendicular to the length direction of the aeration pipe 51. To prevent water splashing, a water baffle 5c is installed on the diversion ring 56. This water baffle 5c is also fitted over the aeration pipe 51. The upper end of the water baffle 5c is tightly connected to the outer wall of the aeration pipe 51, while the lower end is spaced apart from the outer wall of the aeration pipe 51. The lower end of the water baffle 5c and the outer wall of the aeration pipe 51 together form a water outlet channel 5d. With this arrangement, water flowing from the outlet hole 5b can only flow out along the water outlet channel 5d, meaning the water essentially flows down the outer wall of the aeration pipe 51. Because the outlet holes 5b are evenly distributed around the circumference, the entire outer wall of the aeration pipe 51 can be rinsed. Additionally, the water baffle 5c also limits the movement of the diversion ring 56. The inner cavity of the diversion ring 56 is connected to one end of the second pipe 58 via the first control valve 57, and the other end of the second pipe 58 is connected to the cleaning water source.

[0038] As another preferred embodiment (Example 2), based on Example 1, a second three-way valve 59 and a third pipe 5a are added. The second three-way valve 59 is connected to a controller. The first pipe 55 and the second pipe 58 are controllably connected to the cleaning water source and the air source 72 (or air supply equipment) via the second three-way valve 59. Specifically, the common end of the second three-way valve 59 is connected to the first pipe 55 and the second pipe 58, the normally open end of the second three-way valve 59 is connected to the cleaning water source, and the normally closed end of the second three-way valve 59 is connected to the air source 72 or the air supply equipment. Both the air source 72 and the air supply equipment are used to provide clean air with a certain pressure. The air supply equipment needs to be connected to the controller. With this setting, the aeration pipe 51 can be rinsed with water before air is introduced, accelerating the drying process of the aeration pipe 51 and avoiding interference from residual cleaning water on the aeration pipe 51 in the next measurement. In this embodiment, after rinsing the aeration pipe 51, clean air can be introduced to accelerate the drying of the aeration pipe 51.

[0039] As one application scenario, the rotor 42 can be rotatably connected to the lower end of the aeration pipe 51, so that the rotor 42 can be cleaned when the aeration pipe 51 is cleaned. In order to ensure the cleaning effect, a rotor 42 rinsing assembly can be added at the collection station for rinsing the rotor 42. The rotor 42 rinsing assembly includes a second control valve 13 and at least one nozzle 14. The nozzle 14 is connected to the cleaning water source through the second control valve 13 pipe. The second control valve 13 is connected to the controller.

[0040] The aeration pipe 51 and rotor 42 (if any) are cleaned at the collection station to ensure the cleanliness of the test station 11, i.e., other parts of the machine 10. To further prevent cleaning wastewater from splashing out of the collection station, a door assembly is also installed at the collection station. The door assembly can create a relatively independent water-blocking space. The moving mechanism 53 moves the aeration pipe 51 into the water-blocking space before cleaning. Specifically, the door assembly includes a fixed enclosure 15, a movable enclosure 16, and an enclosure drive 17. The fixed enclosure 15 is installed in the machine 10 and has a clearance opening 18 for avoiding the aeration pipe 51 (and rotor 42). The movable enclosure 16 is slidably connected to the fixed enclosure 15 or the machine 10, and the movable enclosure 16 can block the clearance opening 18. The enclosure drive 17 drives the movable enclosure 16 to move. The enclosure drive 17 can be a cylinder. It is preferable that the enclosure drive 17 is located above the enclosure. The enclosure drive 17 is connected to a controller. With this setup, the water-blocking space is relatively independent of the machine 10, reducing the risk of corrosive reagents (such as potassium hydroxide and barium hydroxide) corroding the machine 10, and making it easier to replace the door components. Of course, the fixed enclosure 15 can also be removed, and a portion of the machine 10 can be used as the fixed enclosure 15.

[0041] After the sample test is completed, the aeration pipe 51 rises and moves out of the sample bottle 60. Then, the aeration pipe 51 moves laterally to the collection station. At this time, the aeration pipe 51 can be lowered to a certain height to ensure that most of the aeration pipe 51 is placed within the water-blocking space. After the movable enclosure 16 blocks the avoidance opening 18, the cleaning mechanism and the second control valve 13 are activated to flush the aeration pipe 51 and the rotor 42 (if any). After flushing, air is introduced to dry the aeration pipe 51. Then, the avoidance opening 18 is opened, and the aeration pipe 51 moves laterally above the test station 11 to await the next sample test.

[0042] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. An automatic total acid number analyzer for jet fuel, characterized in that: The system includes a machine, a titration device, an aeration device, a light source, a reflector, a camera, and a controller. The machine has a testing station for placing sample bottles and a collection station for collecting wastewater. The light source is located on one side of the testing station, the reflector is located on the other side of the testing station, and the camera is positioned above the reflector. The angle between the camera and the reflector is equal to the angle between the light source and the reflector. The aeration device includes an aeration pipe, an air supply control element, a moving mechanism, and a cleaning mechanism. The moving mechanism drives the aeration pipe to move up and down and between the testing station and the collection station. The aeration pipe is connected to a nitrogen source via the air supply control element. The cleaning mechanism includes an internal rinsing component for rinsing the inner wall of the aeration pipe and an external rinsing component for rinsing the outer wall of the aeration pipe. The titration device, light source, camera, moving mechanism, air supply control element, internal rinsing component, and external rinsing component are all connected to the controller.

2. The automatic total acid number analyzer for jet fuel according to claim 1, characterized in that: The internal flushing assembly includes a first three-way valve and a first pipe. The common end of the first three-way valve is connected to the upper end of the aeration pipe, the normally open end of the first three-way valve is connected to the air supply control element, and the normally closed end of the first three-way valve is connected to the first pipe. The external flushing assembly includes a diversion ring, a first control valve, and a second pipe. The diversion ring is sleeved on the outer periphery of the aeration pipe. The diversion ring has an inner cavity and several water outlet holes. The water outlet holes communicate with the inner cavity and are evenly distributed circumferentially on the diversion ring. The inner cavity is connected to the second pipe via the first control valve. Both the first pipe and the second pipe are connected to a cleaning water source.

3. The automatic total acid number analyzer for jet fuel according to claim 2, characterized in that: The outlet hole is oriented perpendicular to the length of the aeration pipe. A water baffle is also provided on the diversion ring. The upper end of the water baffle is tightly connected to the outer wall of the aeration pipe, and the lower end of the water baffle is spaced apart from the outer wall of the aeration pipe. The lower end of the water baffle and the outer wall of the aeration pipe cooperate to form a water outlet channel.

4. The automatic total acid number analyzer for jet fuel according to claim 2, characterized in that: It also includes a second three-way valve and a third pipeline. The common end of the second three-way valve is connected to the first pipeline and the second pipeline. The normally open end of the second three-way valve is connected to the cleaning water source. The normally closed end of the second three-way valve is connected to the gas source or gas supply equipment.

5. The automatic total acid number analyzer for jet fuel according to claim 2, characterized in that: The diversion ring is connected to the moving mechanism.

6. The automatic total acid number analyzer for jet fuel according to claim 1, characterized in that: The collection station is a water storage tank integrated into the machine tool, with a discharge port at the bottom of the water storage tank, the discharge port being connected to the outside of the machine tool, and a valve being installed on the discharge port; or, the collection station is a water storage tank, which is positioned and placed in the machine tool.

7. The automatic total acid number analyzer for jet fuel according to claim 1, characterized in that: It also includes a door assembly for constructing a water-retaining space independently or in conjunction with the machine to construct a water-retaining space, the door assembly being installed at the collection station and connected to a controller.

8. The automatic total acid number analyzer for jet fuel according to claim 7, characterized in that: The gate assembly includes a fixed enclosure, a movable enclosure, and an enclosure drive component. The fixed enclosure is installed in the machine and has a clearance opening for avoiding the aeration pipe. The movable enclosure is movably connected to the fixed enclosure or the machine and can block the clearance opening. The enclosure drive component drives the movable enclosure to move.

9. The automatic total acid number analyzer for jet fuel according to claim 1, characterized in that: It also includes an electromagnetic stirring device, which includes an electromagnetic generator and a rotor. The electromagnetic generator is located below the test station and drives the rotor to rotate. The electromagnetic generator is connected to a controller.

10. The automatic total acid number analyzer for jet fuel according to claim 9, characterized in that: The rotor is rotatably connected to the lower end of the aeration pipe; the collection station is also equipped with a rotor flushing assembly for flushing the rotor, the rotor flushing assembly includes a second control valve and at least one nozzle, the nozzle being connected to a cleaning water source via the second control valve pipe.

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