Visual distillate fuel oil cold filter plugging point tester

Abstract

The utility model relates to the technical field of fuel oil detection, in particular to a visual fraction fuel oil cold filter plugging point tester. According to the technical scheme, the device comprises a bottom plate, a base plate, a tank body and a measuring cylinder, the base plate is arranged on the bottom plate, the bottom end of the tank body is placed on the base plate, a sealing cover is arranged at the opening position of the tank body, a cylinder body is arranged on the sealing cover, a piston is arranged in the cylinder body through a lifting assembly, a material nozzle is arranged on the cylinder body, a one-way valve is arranged in the material nozzle, and the measuring cylinder is arranged on the base plate. The measuring cylinder is placed on the bottom plate, a filter screen is arranged at an opening in the top end of the measuring cylinder, and the filter screen is located under an opening in the bottom end of the cylinder body. According to the utility model, the structure is convenient to clean by improving a pressure providing mode, the time and the frequency required by cleaning are reduced by optimizing the design, and cross contamination among different oils can be avoided, so that the accuracy of test data is improved, and the consistency of samples is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel oil detection, in particular to a visual distillate fuel oil cold filter point tester. Background Art

[0002] Distillate fuel oil is a refined oil product derived from crude oil. The cold filter plugging point (CPPP) refers to the lowest temperature at which the filter becomes clogged due to the formation of solid matter such as wax when the fuel oil passes through a specified filter under low-temperature conditions.

[0003] The distillate fuel cold filter plugging point tester can accurately measure the cold filter plugging point of fuel oil, thereby ensuring its fluidity and performance under low temperature conditions.

[0004] During use, when the sample temperature drops to a certain level close to the expected cold filter plugging point, the distillate fuel oil cold filter plugging point tester begins to apply a certain amount of pressure to the sample. The current pressure supply method is usually applied through a pneumatic or electric pump. This results in a large number of internal dead corners of the pneumatic or electric pump when changing different oils for testing, resulting in incomplete cleaning and the risk of sample cross-contamination.

[0005] To this end, we propose a visual distillate fuel oil cold filter point tester to solve the existing problems. Utility Model Content

[0006] The purpose of the utility model is to solve the problems existing in the background technology and to provide a visual distillate fuel oil cold filter point tester.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a visual distillate fuel oil cold filter point tester, comprising a base plate, a pad, a tank body and a measuring cylinder, the pad being arranged on the base plate, the bottom end of the tank body being resting on the pad, a sealing cover being provided at the opening position of the tank body, a cylinder body being provided on the sealing cover, a piston being provided in the cylinder body through a lifting assembly, a nozzle being provided on the cylinder body, a one-way valve being provided in the nozzle, the measuring cylinder being resting on the base plate, a filter screen being provided at the top opening of the measuring cylinder, and the filter screen being directly below the bottom end opening of the cylinder body.

[0008] Preferably, a refrigeration unit is provided on the upper surface of the bottom plate, a refrigeration output end is provided on the refrigeration unit, and the tank body is plugged into the refrigeration output end.

[0009] Preferably, the lower surface of the cylinder abuts against the bottom end of the inner wall of the tank body and a sealing ring is provided at the connection between the two, and the bottom end opening of the cylinder passes through the tank body and the backing plate in sequence.

[0010] Preferably, the lifting assembly is composed of a slide groove, a screw, a gear ring, a screw seat, a slider and a motor, the screw seat is rotatably arranged on the cover, the gear ring is arranged on the outer wall of the screw seat, the screw thread is arranged on the screw seat, and the bottom end of the screw is arranged on the upper surface of the piston.

[0011] Preferably, the slide groove is provided on the screw rod, one end of the slider is slidably provided in the slide groove, and the other end of the slider is provided on the cover.

[0012] Preferably, the motor is arranged on the cover, and a gear is provided at the output end of the motor, and the gear at the output end of the motor is in a gear meshing state with the ring gear.

[0013] Preferably, a temperature sensor is provided on the pad, and the temperature sensor contacts the outer wall of the bottom opening of the cylinder.

[0014] Preferably, a support base is provided on the lower surface of the base plate, and there are four support bases in total, and the positions of the four support bases are distributed in a rectangular array on the lower surface of the base plate.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0016] During use, the utility model visualized distillate fuel oil cold filter point tester can be used to introduce the distillate fuel oil to be tested into the tank body, then cover it with a cover, connect it to an external power supply, and the refrigerator will work to provide cooling capacity to the distillate fuel oil inside the tank body through the cooling output end through the tank body, thereby reducing the sample temperature;

[0017] The drive assembly works, and the motor works to rotate the screw seat through the meshing state of the gear teeth. At this time, the screw is limited by the slider and does not deflect. Under the principle of the lead screw, the screw is lifted and lowered. When the sample temperature approaches the expected cold filter point, the piston moves upward, and under the action of negative pressure suction, the sample inside the tank enters the cylinder through the one-way valve in the nozzle;

[0018] Then the piston is controlled to move downward to apply a certain pressure to the sample inside the cylinder and squeeze it onto the filter. The speed of the piston is controlled by controlling the speed of the motor, thereby controlling the pressure applied to the sample.

[0019] At this time, the temperature sensor is connected to the external computer to display the data. The temperature sensor detects the specific temperature of the sample before it leaves the cylinder, and then observes whether the sample can pass through the filter within a certain time interval. It records whether the sample can pass through the filter continuously at a specific temperature. When the sample cannot pass through the filter at a certain temperature, it is considered that the cold filter point has been reached.

[0020] The utility model facilitates cleaning of the structure by improving the pressure providing method, and the optimized design reduces the time and frequency required for cleaning, so that the equipment can be put into the next test more quickly, and can avoid cross contamination between different oils, thereby improving the accuracy of test data, ensuring the consistency of samples, and making the test results more reliable and repeatable. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0022] Figure 2 This is a schematic diagram of the main structure of the utility model;

[0023] Figure 3 This is a schematic diagram of the cross-sectional structure of the tank body of the present utility model;

[0024] Figure 4 This is a schematic diagram of the drive assembly structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the cross-sectional structure of the measuring cylinder of the present invention.

[0026] Reference numerals:

[0027] 1. Support base; 2. Bottom plate; 3. Refrigeration unit; 4. Refrigeration output terminal; 5. Pad; 6. Tank body; 7. Cover; 8. Measuring cylinder; 9. Cylinder body; 10. Nozzle; 11. One-way valve; 12. Piston; 13. Slide; 14. Screw; 15. Ring gear; 16. Screw seat; 17. Slider; 18. Motor; 19. Filter; 20. Temperature sensor. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example 1

[0030] like Figure 1-Figure 5As shown, the utility model proposes a visual distillate fuel oil cold filter point tester, which includes a base plate 2, a pad 5, a tank body 6 and a measuring cylinder 8. The pad 5 is arranged on the base plate 2, and the bottom end of the tank body 6 is placed on the pad 5. A cover 7 is provided at the opening position of the tank body 6, and a cylinder body 9 is provided on the cover 7. A piston 12 is provided in the cylinder body 9 through a lifting assembly. A nozzle 10 is provided on the cylinder body 9, and a one-way valve 11 is provided in the nozzle 10. The measuring cylinder 8 is placed on the base plate 2, and a filter screen 19 is provided at the top opening of the measuring cylinder 8. The filter screen 19 is located directly below the bottom opening of the cylinder body 9.

[0031] Based on Example 1:

[0032] During use of the present invention's visual distillate fuel oil cold filter point tester, the distillate fuel oil to be tested can be introduced into the tank body 6 and then covered with a cover 7. After connecting to an external power source, the refrigerator operates to provide cooling to the distillate fuel oil inside the tank body 6 through the cooling output end 4 and the tank body 6, thereby reducing the sample temperature.

[0033] The drive assembly works to make the screw 14 move up and down. When the sample temperature approaches the expected cold filter point, the piston 12 moves upward and the sample inside the tank 9 enters the cylinder 6 through the one-way valve 11 in the nozzle 10 under the action of negative pressure suction.

[0034] Then, the piston 12 is controlled to move downward to apply a certain pressure to the sample inside the cylinder 9 and squeeze it onto the filter 19. The speed of the piston 12 is controlled by controlling the speed of the motor 18 to control the pressure applied to the sample.

[0035] At this time, the temperature sensor 20 is connected to an external computer to display data. The temperature sensor 20 detects the specific temperature of the sample before it leaves the cylinder 9, and then observes whether the sample can pass through the filter 19 within a certain time interval, and records whether the sample can continuously pass through the filter 19 at a specific temperature. When the sample cannot pass through the filter 19 at a certain temperature, it is considered that the cold filter point has been reached.

[0036] Example 2

[0037] like Figure 1-Figure 5As shown, the present invention proposes a visual distillate fuel oil cold filter point tester. Compared with the first embodiment, this embodiment further includes: a refrigeration unit 3 is provided on the upper surface of the base plate 2, and a refrigeration output terminal 4 is provided on the refrigeration unit 3. The tank body 6 is plugged into the refrigeration output terminal 4. The principle of refrigeration is to compress the refrigerant to make it into a high-temperature and high-pressure gas. The high-temperature and high-pressure refrigerant gas flows through the condenser, where it releases heat and condenses into liquid. The refrigerant liquid absorbs the heat of the tested sample through the evaporator to reduce its temperature. The above-mentioned refrigeration principle is an existing mature technology. Its working principle and internal structure are known to technicians in the relevant technical field. The present invention only utilizes its function and does not improve its internal structure. Therefore, it will not be described in detail here. Those skilled in the art can make any selection according to their needs or convenience.

[0038] The lower surface of the cylinder 9 rests against the bottom end of the inner wall of the tank body 6 and a sealing ring is provided at the connection between the two. The bottom opening of the cylinder 9 passes through the tank body 6 and the pad 5 in sequence. The design of the sealing ring ensures the sealing performance of the connection between the cylinder 9 and the tank body 6.

[0039] The lifting assembly is composed of a slide 13, a screw 14, a ring gear 15, a screw seat 16, a slider 17 and a motor 18. The screw seat 16 is rotatably arranged on the cover 7, the ring gear 15 is arranged on the outer wall of the screw seat 16, the screw 14 is threaded on the screw seat 16, the bottom end of the screw 14 is arranged on the upper surface of the piston 12, the slide 13 is arranged on the screw 14, one end of the slider 17 is slidably arranged in the slide 13, the other end of the slider 17 is arranged on the cover 7, and the motor 18 is arranged on the cover 7. The output end of the motor 18 is provided with a gear, and the gear at the output end of the motor 18 is in a gear meshing state with the ring gear 15. The drive assembly works, and the motor 18 works through the gear meshing state to rotate the screw seat 16. At this time, the screw 14 is limited by the slider 17 and does not produce a deflection action. Under the principle of the screw, the screw 14 is lifted and lowered.

[0040] A temperature sensor 20 is provided on the pad 5 , which contacts the outer wall of the bottom opening of the cylinder 9 . The temperature sensor 20 is connected to an external computer to display data. The temperature sensor 20 detects the specific temperature of the sample before it leaves the cylinder 9 .

[0041] A support base 1 is provided on the lower surface of the base plate 2 . There are four support bases 1 in total, and the positions of the four support bases 1 are distributed in a rectangular array on the lower surface of the base plate 2 .

[0042] It should be noted that the structures of the motor 18, the one-way valve 11, and the temperature sensor 20 are existing mature technologies, and their working principles and internal structures are known to technicians in the relevant technical field. The present invention only utilizes their functions and does not improve their internal structures. Therefore, they are not described in detail here, and technicians in this field can make any optional selections according to their needs or convenience.

[0043] The above specific embodiments are only several preferred embodiments of the present invention. Based on the technical solutions of the present invention and the relevant inspirations of the above embodiments, those skilled in the art can make various alternative improvements and combinations to the above specific embodiments.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A visual distillate fuel oil cold filter plugging point tester, comprising a base plate (2), a backing plate (5), a tank body (6) and a measuring cylinder (8), characterized in that: The pad (5) is arranged on the bottom plate (2), the bottom end of the tank body (6) is placed on the pad (5), a cover (7) is provided at the opening position of the tank body (6), a cylinder (9) is provided on the cover (7), a piston (12) is provided in the cylinder (9) through a lifting assembly, a nozzle (10) is provided on the cylinder (9), a one-way valve (11) is provided in the nozzle (10), the measuring cylinder (8) is placed on the bottom plate (2), a filter (19) is provided at the top opening of the measuring cylinder (8), and the filter (19) is located directly below the bottom opening of the cylinder (9).

2. A visual distillate fuel oil cold filter plugging point tester according to claim 1, characterized in that: A refrigeration unit (3) is provided on the upper surface of the base plate (2), a refrigeration output end (4) is provided on the refrigeration unit (3), and the tank body (6) is plugged into the refrigeration output end (4).

3. The visual distillate fuel oil cold filter plugging point tester according to claim 1, characterized in that: The lower surface of the cylinder (9) abuts against the bottom end of the inner wall of the tank body (6), and a sealing ring is provided at the connection between the two. The bottom opening of the cylinder (9) passes through the tank body (6) and the pad (5) in sequence.

4. A visual distillate fuel oil cold filter plugging point tester according to claim 1, characterized in that: The lifting assembly is composed of a slide groove (13), a screw (14), a gear ring (15), a screw seat (16), a slider (17) and a motor (18); the screw seat (16) is rotatably arranged on the cover (7); the gear ring (15) is arranged on the outer wall of the screw seat (16); the screw (14) is threadedly arranged on the screw seat (16); and the bottom end of the screw (14) is arranged on the upper surface of the piston (12).

5. A visual distillate fuel oil cold filter plugging point tester according to claim 4, characterized in that: The slide groove (13) is provided on the screw rod (14), one end of the slider (17) is slidably provided in the slide groove (13), and the other end of the slider (17) is provided on the cover (7).

6. A visual distillate fuel oil cold filter plugging point tester according to claim 4, characterized in that: The motor (18) is arranged on the cover (7), and a gear is provided at the output end of the motor (18). The gear at the output end of the motor (18) is in a gear meshing state with the ring gear (15).

7. The visual distillate fuel oil cold filter plugging point tester according to claim 1, characterized in that: A temperature sensor (20) is provided on the pad (5), and the temperature sensor (20) contacts the outer wall of the bottom opening of the cylinder (9).

8. The visual distillate fuel oil cold filter plugging point tester according to claim 1, characterized in that: A support seat (1) is provided on the lower surface of the base plate (2), and there are four support seats (1) in total, and the positions of the four support seats (1) are distributed in a rectangular array on the lower surface of the base plate (2).

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