A test device for testing the dirt holding capacity of fuel filters

Abstract

The utility model discloses a test device of testing fuel filter element's anti -pollution ability, including dirty note system oil tank, first temperature sensor, 1 pump, first switch stop valve, first filter, second switch stop valve, first check valve, first sampling stop valve, first flowmeter, first throttle valve, first radiator, second temperature sensor, test system oil tank, 2 pump, second sampling stop valve, second filter, pressure difference sensor, pressure sensor, second throttle valve, third switch stop valve, third filter, fourth switch stop valve, second check valve, second flowmeter, second radiator, waste oil tank and third throttle valve. The utility model can realize the test of the anti -pollution time of various different fuel filter element class products under the high pollution degree pollution environment condition, and the operation is convenient, and the test process is stable, and the result is accurate, and temperature, flow, pressure and the like parameter are easy to adjust.

Description

Technical Field

[0001] This utility model belongs to the field of filter element testing technology, specifically a test device that can test the anti-fouling ability of various types of fuel filter elements. Background Technology

[0002] In recent years, the demand for testing the filtration performance of fuel filter elements with high dirt-holding capacity has grown rapidly. These fuel filter elements are mostly used in fuel fluid systems. Compared with lubricating oil filter elements, the standards used are inconsistent. The dirt-holding capacity test of fuel filter elements is characterized by long test time and a large amount of dirt-holding media. It is impossible to use the multiple-pass test method of GJB3820 to conduct the test. Therefore, based on the research and development requirements and with reference to the national military standard GJB214A-2018 "General Specification for Military Filter Materials", a fuel contamination test bench was built to effectively solve the problem of evaluating the filtration performance of fuel filter elements with high dirt-holding capacity. Summary of the Invention

[0003] In view of the problems existing in the background technology, the present invention aims to provide a test device for testing the anti-fouling ability of fuel filter elements, which can realize the test of the anti-fouling time of various types of fuel filter elements under high pollution environment conditions, and provide a basis for product design and development.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: A testing apparatus for testing the anti-fouling ability of fuel filter elements, comprising: The sludge injection unit mainly consists of a sludge injection system oil tank, a first temperature sensor, a No. 1 pump, a first shut-off valve, a first filter, a second shut-off valve, a first check valve, a first sampling shut-off valve, a first flow meter, a first throttle valve, and a first radiator, wherein: The first temperature sensor is installed in the sludge injection system oil tank. The outlet end of the sludge injection system oil tank is connected to the inlet end of pump #1. The outlet end of pump #1 is also connected to the inlet ends of the first pipeline and the second pipeline. The first pipeline and the second pipeline are connected in parallel. The first pipeline has a first shut-off valve, a first filter, and a first check valve connected in series from the inlet end to the outlet end. The second pipeline is equipped with a second shut-off valve. The outlet ends of the first pipeline and the second pipeline are simultaneously connected to the inlet ends of the first sampling shut-off valve, the first flow meter, and the first throttle valve. The outlet end of the first throttle valve is connected to the inlet end of the sludge injection system oil tank via the first radiator. The test unit mainly consists of a second temperature sensor, a test system oil tank, a No. 2 pump, a second sampling shut-off valve, a second filter, a differential pressure sensor, a pressure sensor, a second throttle valve, a third shut-off valve, a third filter, a fourth shut-off valve, a second check valve, a second flow meter, a second radiator, a waste oil tank, and a third throttle valve. The oil tank of the test system is connected to the outlet end of the first flow meter. The second temperature sensor is installed in the oil tank of the test system. The outlet end of the oil tank of the test system is connected to the inlet end of the No. 2 pump. The outlet end of the No. 2 pump is connected in series with the second filter, pressure sensor, second throttle valve, fourth shut-off valve, second flow meter and second radiator. The outlet end of the second radiator is connected to the inlet end of the waste oil tank and the inlet end of the oil tank of the test system, respectively. The second sampling shut-off valve and the third throttle valve form the third pipeline, and the inlet end of the third throttle valve is connected to the oil tank of the test system. A differential pressure sensor is connected in parallel between the inlet and outlet of the second filter; The third shut-off valve, the third filter, and the second check valve are connected in series to form the fourth pipeline. The inlet end of the third shut-off valve is connected to the inlet end of the fourth shut-off valve, and the outlet end of the second check valve is connected to the outlet end of the fourth shut-off valve.

[0005] As an alternative, pumps #1 and #2 are centrifugal pumps.

[0006] As an alternative: the oil tank of the sludge injection system and the oil tank of the test system are equipped with a stirrer, and both the oil tank of the sludge injection system and the oil tank of the test system are conical structures, with the small diameter end of the conical structure being the outlet end.

[0007] As an alternative: the lower end of the oil tank of the sludge injection system and the oil tank of the test system is equipped with casters.

[0008] In this invention, the sludge injection unit, according to experimental needs, mainly consists of a sludge injection system oil tank, a temperature sensor, a pump, a shut-off valve, a filter, a radiator, and a throttle valve. The stirred oil enters the test unit via pump #1 from the sludge injection system oil tank, where the test is completed.

[0009] Compared with existing technologies, this utility model can test the anti-pollution time of various fuel filter products under high-pollution environmental conditions. The testing device consists of two parts: a sludge injection unit and a testing unit. The testing device mainly includes a sludge injection system tank, a temperature sensor, a pump, a shut-off valve, a filter, a check valve, a sampling shut-off valve, a flow meter, a throttle valve, a radiator, a testing system tank, a differential pressure sensor, a pressure sensor, and a waste oil tank. The testing device can conveniently and quickly measure anti-pollution capability and inlet / outlet flow rate. The entire testing device has a reasonable and aesthetically pleasing layout, and the internal structure is reliably connected. Attached Figure Description

[0010] Figure 1 This is a structural diagram of the test device for testing the anti-fouling ability of a fuel filter element in this utility model; In the diagram: 1. Sludge injection system oil tank; 2. First temperature sensor; 3. Pump #1; 4. First shut-off valve; 5. First filter; 6. Second shut-off valve; 7. First check valve; 8. First sampling shut-off valve; 9. First flow meter; 10. First throttle valve; 11. First radiator; 12. Second temperature sensor; 13. Test system oil tank; 14. Pump #2; 15. Second sampling shut-off valve; 16. Second filter; 17. Differential pressure sensor; 18. Pressure sensor; 19. Second throttle valve; 20. Third shut-off valve; 21. Third filter; 22. Fourth shut-off valve; 23. Second check valve; 24. Second flow meter; 25. Second radiator; 26. Waste oil tank; 27. Third throttle valve. Detailed Implementation

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. However, it should not be construed that the scope of the subject matter of the present invention is limited to the following embodiments. Any modifications, substitutions and alterations made based on ordinary technical knowledge and conventional means in the art without departing from the above-described technical concept of the present invention are included within the scope of the present invention.

[0012] like Figure 1 As shown, this utility model presents a test device for testing the anti-fouling ability of a fuel filter element, comprising a sludge injection system tank 1, a first temperature sensor 2, a No. 1 pump 3, a first switch shut-off valve 4, a first filter 5, a second switch shut-off valve 6, a first check valve 7, a first sampling shut-off valve 8, a first flow meter 9, a first throttle valve 10, a first radiator 11, a second temperature sensor 12, a test system tank 13, a No. 2 pump 14, a second sampling shut-off valve 15, a second filter 16, a differential pressure sensor 17, a pressure sensor 18, a second throttle valve 19, a third switch shut-off valve 20, a third filter 21, a fourth switch shut-off valve 22, a second check valve 23, a second flow meter 24, a second radiator 25, a waste oil tank 26, and a third throttle valve 27.

[0013] The sludge injection system consists of an oil tank 1, a first temperature sensor 2, a No. 1 pump 3, a first shut-off valve 4, a first filter 5, a second shut-off valve 6, a first check valve 7, a first sampling shut-off valve 8, a first flow meter 9, a first throttle valve 10, and a first radiator 11.

[0014] The first temperature sensor 2 is installed in the sludge injection system oil tank 1. The outlet end of the sludge injection system oil tank 1 is connected to the inlet end of pump #1 3. The outlet end of pump #1 3 is also connected to the inlet ends of the first pipeline and the second pipeline. The first pipeline and the second pipeline are connected in parallel. The first pipeline has a first shut-off valve 4, a first filter 5 and a first check valve 7 connected in series from the inlet end to the outlet end. The second pipeline has a second shut-off valve 6. The outlet ends of the first pipeline and the second pipeline are simultaneously connected to the inlet end of the first sampling shut-off valve 8, the inlet end of the first flow meter 9 and the inlet end of the first throttle valve 10. The outlet end of the first throttle valve 10 is connected to the inlet end of the sludge injection system oil tank 1 via the first radiator 11.

[0015] The test unit consists of the second temperature sensor 12, the test system oil tank 13, the No. 2 pump 14, the second sampling shut-off valve 15, the second filter 16, the differential pressure sensor 17, the pressure sensor 18, the second throttle valve 19, the third switch shut-off valve 20, the third filter 21, the fourth switch shut-off valve 22, the second check valve 23, the second flow meter 24, the second radiator 25, the waste oil tank 26, and the third throttle valve 27.

[0016] The test system oil tank 13 is connected to the outlet end of the first flow meter 9. The second temperature sensor 12 is installed in the test system oil tank 13. The outlet end of the test system oil tank 13 is connected to the inlet end of the No. 2 pump 14. The outlet end of the No. 2 pump 14 is connected in series with the second filter 16, the pressure sensor 18, the second throttle valve 19, the fourth switch shut-off valve 22, the second flow meter 24, and the second radiator 25. The outlet end of the second radiator 25 is connected to the inlet end of the waste oil tank 26 and the inlet end of the test system oil tank 13, respectively.

[0017] The second sampling shut-off valve 15 and the third throttle valve 27 form the third pipeline, and the inlet end of the third throttle valve 27 is connected to the oil tank 13 of the test system.

[0018] A differential pressure sensor 17 is connected in parallel between the inlet and outlet of the second filter 16.

[0019] The third shut-off valve 20, the third filter 21, and the second check valve 23 are connected in series to form the fourth pipeline. The inlet end of the third shut-off valve 20 is connected to the inlet end of the fourth shut-off valve 22, and the outlet end of the second check valve 23 is connected to the outlet end of the fourth shut-off valve 22.

[0020] like Figure 1 As shown, based on the testing requirements of most products, the test device for testing the anti-fouling ability of fuel filter elements is divided into two parts: a dirt injection unit and a test unit.

[0021] Working principle of the sludge injection unit: After being stirred, the oil is stirred again in the sludge injection system tank 1, and then enters the test system through pump #1 (centrifugal pump), the second shut-off valve 6, and the first flow meter 9. When it is necessary to adjust the flow rate entering the test or change the temperature of the oil entering the test unit, the opening of the first throttle valve 10 can be adjusted (when it is necessary to adjust the oil temperature, the first radiator 11 can be turned on). When it is necessary to change the degree of oil contamination, the second shut-off valve 6 can be closed and the first shut-off valve 4 can be opened, allowing the oil to pass through the first filter 5, the first check valve 7, and then the first flow meter 9 before entering the test unit. When it is necessary to sample the oil entering the test unit, the first sampling shut-off valve 8 is opened to sample the oil.

[0022] Working principle of the test unit: The oil in the test system oil tank 13 flows through pump #2 14 (centrifugal pump), through the second filter 16 (as the product to be tested), through the second flow meter 24, into the second radiator 25, and finally returns to the test system oil tank 13, forming a cycle. When it is necessary to sample the oil in the test system oil tank 13, the opening of the third throttle valve 27 is adjusted, and the second sampling stop valve 15 is opened to obtain an oil sample. When it is necessary to change the degree of oil contamination, the fourth switch stop valve 22 is closed, and the third switch stop valve 20 is opened, so that the oil passes through the third filter 21 for filtration. When it is necessary to adjust the flow rate through the product (second filter 16) during the test, the opening of the second throttle valve 19 is adjusted. Whether the second radiator 25 is open depends on the required temperature of the oil returning to the test system oil tank 13 and the temperature requirements of the test oil. The waste oil tank 26 is opened or closed depending on whether oil needs to be recycled.

[0023] Given that there is no existing fuel filter element anti-fouling ability testing device, the operation mode of this testing device can easily and quickly realize the anti-fouling ability test of various products. The testing device conditions are kept within the required range, and the test can be carried out with more accurate readings (temperature measurement, pressure measurement points close to the product, and anti-fouling time), which meets the product testing requirements and provides a reliable basis for product quality judgment.

[0024] The method of using the experimental apparatus is briefly described below: Step 1: Press the inlet and outlet ends of the product (second filter 16) according to... Figure 1 The location of the product test piece marked in the test unit is shown (i.e., Figure 1 (Position 17 of the differential pressure sensor) connects the product's inlet and outlet ends to the oil supply hose and return hose.

[0025] Step 2: After assembly is completed, turn on the contamination injection unit and slowly add contaminants to the test unit. The test unit keeps circulating and records the product (second filter 16) pressure difference through differential pressure sensor 17.

[0026] Step 3: If the product (second filter 16) remains in circulation, adjust the amount of contaminant injected according to the test outline requirements, adjust the required flow rate and temperature of the product (second filter 16) in the test unit, wait for the flow rate and temperature of the test unit to reach the required values, and record the results.

[0027] During the testing process using this invention, the test flow rate and pressure remained relatively stable, facilitating faster and more efficient data collection. The testing device exhibited stable parameters without out-of-tolerance fluctuations, no oil leakage in the pipelines, smooth circulation, and high flexibility and portability, perfectly achieving its operational goals.

[0028] The oil tank 13 of the test system sends the oil through pump #2 14 to the second filter 16, which is the product to be tested. The oil flowing out of the second filter 16 flows back to the oil tank 13 of the test system through the second flow meter 24 and the second radiator 25 to form a cycle.

[0029] The oil tank 1 of the sludge injection system and the oil tank 13 of the test system are equipped with a stirring structure to agitate the oil, which keeps the dust in the oil uniform and prevents it from settling at the bottom of the tank. In this embodiment, the parameters of the oil tank 1 of the sludge injection system and the oil tank 13 of the test system are as follows: medium: hydraulic oil; capacity: 100L; diameter: 450mm; height: 400mm; material: stainless steel; structure: conical; bottom discharge; stirring method: propeller type; motor power: 0.37kw; stirring speed: 33r / min, which can meet the needs of most products.

[0030] Centrifugal pump parameters for pumps #1 and #2: Medium: RP-3 fuel oil; Diameter: 50mm; Flow rate: 12m³ / h 3 / h; Pressure: 0.6MPa; Rotation speed: 135r / min; Equipped with a 7.5kw explosion-proof variable frequency motor and control box.

[0031] The overall structure of the test device adopts an integrated design, with the front being the sludge injection unit and the rear being the test unit. Both the sludge injection system oil tank 1 and the test system oil tank 13 are made of stainless steel welded together. Four casters are installed under the oil tanks to facilitate the movement of the test device. A hydraulic system and an electrical control system (purchased from the market) can be configured to precisely control the flow rate, temperature, and heat dissipation of the test device.

[0032] The above description is merely one specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A testing apparatus for testing the anti-fouling ability of fuel filter elements, characterized in that, include: The sludge injection unit mainly consists of a sludge injection system oil tank (1), a first temperature sensor (2), a No. 1 pump (3), a first shut-off valve (4), a first filter (5), a second shut-off valve (6), a first check valve (7), a first sampling shut-off valve (8), a first flow meter (9), a first throttle valve (10), and a first radiator (11), wherein: The first temperature sensor (2) is installed in the sludge injection system oil tank (1). The outlet end of the sludge injection system oil tank (1) is connected to the inlet end of pump #1 (3). The outlet end of pump #1 (3) is also connected to the inlet end of the first pipeline and the second pipeline. The first pipeline and the second pipeline are connected in parallel. The first pipeline is connected in series from the inlet end to the outlet end with the first switch shut-off valve (4), the first filter (5) and the first check valve (7). The second pipeline is equipped with the second switch shut-off valve (6). The outlet ends of the first pipeline and the second pipeline are connected to the inlet end of the first sampling shut-off valve (8), the inlet end of the first flow meter (9) and the inlet end of the first throttle valve (10). The outlet end of the first throttle valve (10) is connected to the inlet end of the sludge injection system oil tank (1) via the first radiator (11). The test unit mainly consists of a second temperature sensor (12), a test system oil tank (13), a No. 2 pump (14), a second sampling shut-off valve (15), a second filter (16), a differential pressure sensor (17), a pressure sensor (18), a second throttle valve (19), a third switch shut-off valve (20), a third filter (21), a fourth switch shut-off valve (22), a second check valve (23), a second flow meter (24), a second radiator (25), a waste oil tank (26), and a third throttle valve (27), wherein: The test system oil tank (13) is connected to the outlet end of the first flow meter (9). The second temperature sensor (12) is installed in the test system oil tank (13). The outlet end of the test system oil tank (13) is connected to the inlet end of the 2# pump (14). The outlet end of the 2# pump (14) is connected in series with the second filter (16), pressure sensor (18), second throttle valve (19), fourth switch shut-off valve (22), second flow meter (24) and second radiator (25). The outlet end of the second radiator (25) is connected to the inlet end of the waste oil tank (26) and the inlet end of the test system oil tank (13) respectively. The second sampling shut-off valve (15) and the third throttle valve (27) form the third pipeline, and the inlet end of the third throttle valve (27) is connected to the oil tank (13) of the test system. A differential pressure sensor (17) is connected in parallel between the inlet and outlet of the second filter (16). The third shut-off valve (20), the third filter (21), and the second check valve (23) are connected in series to form the fourth pipeline. The inlet end of the third shut-off valve (20) is connected to the inlet end of the fourth shut-off valve (22), and the outlet end of the second check valve (23) is connected to the outlet end of the fourth shut-off valve (22).

2. The testing apparatus for testing the anti-fouling ability of a fuel filter element according to claim 1, characterized in that: Pump 1 (3) and pump 2 (14) are centrifugal pumps.

3. The testing apparatus for testing the anti-fouling ability of a fuel filter element according to claim 1, characterized in that: A stirrer is provided in the oil tank (1) of the sludge injection system and the oil tank (13) of the test system. Both the oil tank (1) of the sludge injection system and the oil tank (13) of the test system are conical structures, with the small diameter end of the conical structure being the outlet end.

4. The testing apparatus for testing the anti-fouling ability of a fuel filter element according to claim 3, characterized in that: The lower ends of the oil tank (1) of the sludge injection system and the oil tank (13) of the test system are equipped with casters.

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