Performance testing system and testing method for nuclear power plant filters

Abstract

This invention relates to a performance testing system for nuclear power plant filters, comprising: connecting a storage tank heating and cooling device to the performance testing system for nuclear power plant filters; the storage tank heating and cooling device heating or cooling a test solution in the performance testing system for nuclear power plant filters; connecting one end of the storage tank heating and cooling device to one end of a filter testing device; connecting one end of a filter system self-cleaning device to the other end of the filter testing device, the other end of the filter system self-cleaning device being connected to the inlet of the storage tank heating and cooling device; the filter system self-cleaning device performing self-cleaning filtration of the test solution before or after testing by the filter testing device; and testing particle shedding performance, durability performance, behavioral performance, impact performance, temperature change performance, filter element clogging temperature change performance, and permeability performance.

Description

Technical Field

[0001] The embodiments of the present invention relate to a performance testing system and method for filters, and particularly to a performance testing system and method for filters used in nuclear power plants. Background Technology

[0002] Nuclear power has seen tremendous development and application as a pollution-free power generation system. Numerous filters are used in nuclear power plants. However, due to the radiation generated during operation, the selection of filter materials is crucial. Furthermore, to ensure filter performance, performance testing must be conducted on the final product before use. Existing filter performance testing systems and methods are insufficient to meet the testing requirements for properties such as particle shedding, high-temperature resistance, and permeability. Summary of the Invention

[0003] The purpose of this invention is to provide a performance testing system and method for nuclear power plant filters, capable of testing the particle shedding performance, durability performance, behavior performance, impact performance, temperature change performance, clogging filter element temperature change performance, and permeability performance of filters.

[0004] To achieve the above objectives, embodiments of the present invention provide a performance testing system for nuclear power plant filters, characterized in that it includes:

[0005] A tank heating and cooling device is connected to the performance testing system for nuclear power plant filters; the tank heating and cooling device heats or cools the test solution in the performance testing system for nuclear power plant filters.

[0006] A filter testing device is connected to one end of the storage tank heating and cooling device.

[0007] The filtration system self-cleaning device is connected to one end of the filter testing device, and the other end of the filter system self-cleaning device is connected to the inlet of the storage tank heating and cooling device; the filtration system self-cleaning device performs self-cleaning filtration on the test solution before or after the filter testing device is tested.

[0008] Furthermore, the aforementioned tank heating and cooling device also includes:

[0009] The storage tank has an inlet connected to the outlet of an ionized water valve; a first test valve is connected in parallel on the storage tank; a third pressure gauge and a first pressure sensor are connected in series on the pipeline between the storage tank and the first test valve; and a storage tank outlet valve is connected to the bottom of the storage tank.

[0010] A level gauge and a pressure gauge are connected to the interlayer on one side of the storage tank; the outlet of the first inlet filter is connected to the interlayer of the storage tank; the outlet of the first heating water valve and the outlet of the first cooling water valve are respectively connected to the inlet of the first inlet filter; the outlet of the hot water unit is connected to the inlet of the first heating water valve; the inlet of the first cooling water valve is connected to the outlet of the chiller unit.

[0011] On the other side of the storage tank, the inlet of the heating water valve and the inlet of the cooling water valve are respectively connected to the interlayer; the outlet of the heating water valve is connected to the return water port of the hot water unit; the outlet of the cooling water valve is connected to the return water port of the chiller unit.

[0012] The outlet at the bottom of the storage tank is connected to the inlet of the test pump; the outlet of the test pump is connected to the inlet of the first test valve and the inlet of the second test valve, respectively.

[0013] A liquid outlet valve is provided at the lower part of the storage tank; a jacket inlet valve is provided at the upper part of the storage tank; an inlet of a jacket outlet valve is provided at the upper part of the jacket of the storage tank, and the outlet of the jacket outlet valve is connected to a jacket return device.

[0014] Furthermore, the filter testing device further includes:

[0015] The test filter is connected to the outlet of the second test valve at its inlet, and a fourth pressure gauge, a third pressure sensor, a first thermometer, and a first temperature sensor are connected in series on the pipeline between the test filter and the second test valve.

[0016] A first sampling valve and a second sampling valve are connected to the two ends of the test filter, respectively; the two ends of the test filter are simultaneously connected in parallel to the two ends of a differential pressure gauge and the two ends of a flow meter, respectively.

[0017] The self-cleaning device of the filtration system is connected to the outlet of the test filter.

[0018] Furthermore, the self-cleaning device of the filtration system also includes:

[0019] The first filter is connected to the inlet of the third test valve at the outlet of the test filter, and the outlet of the third test valve is connected to the inlet of the first filter.

[0020] A second temperature sensor, a second thermometer, a second pressure sensor, and a first pressure gauge are sequentially installed on the pipeline from the inlet of the third test valve to the outlet of the test filter.

[0021] The outlet of the first filter is connected to the inlet of the fourth test valve and the inlet of the fifth test valve, respectively; the outlet of the fourth test valve and the inlet of the third test valve are connected in series to the two ends of the sixth test valve; and a filtrate collection valve is connected to the inlet of the third test valve, and a filtrate collector is provided below the filtrate collection valve.

[0022] The outlet of the second filter and the fifth test valve are connected to the inlet of the second filter; the outlet of the second filter is connected to the inlet of the seventh test valve; a fourth pressure sensor and a second pressure gauge are installed in the pipeline between the seventh test valve and the fourth test valve; the outlet of the seventh test valve is connected to the inlet of the third filter, and the outlet of the third filter is connected to the storage tank through the storage tank return port.

[0023] The outlet of the third test valve is connected to the outlet of the second inlet filter; the outlet of the second inlet heating water valve and the outlet of the second inlet cooling water valve are respectively connected to the inlet of the second inlet filter; the inlet of the second inlet heating water valve and the inlet of the second inlet cooling water valve are respectively connected to the return water port of the hot water unit and the return water port of the chiller unit.

[0024] Furthermore, an agitator is fixed inside the storage tank, and a stirring motor is fixedly connected above the agitator; the stirring motor drives the agitator to rotate, which is used to accelerate the heating or cooling of the storage tank heating and cooling device.

[0025] Furthermore, both the cooling water outlet and the cooling water return port are connected to the chiller unit; a deionized water inlet is also connected to one side of the chiller unit.

[0026] Both the hot water pipe outlet and the hot water pipe return port are connected to the hot water unit.

[0027] This invention also discloses a testing method for a performance testing system of nuclear power plant filters, characterized by comprising:

[0028] The test filters were tested for particle shedding performance, durability performance, behavioral performance, impact performance, temperature change performance, clogging filter element temperature change performance, and permeability performance using particle shedding test method, durability test method, behavioral test method, impact test method, temperature change performance, clogging filter element temperature change performance, and permeability test method.

[0029] Furthermore, the particle shedding test method includes the following steps:

[0030] Step S11, Blank test:

[0031] Open the inlet deionized water valve to introduce deionized water into the storage tank. Start the stirring motor and agitator. If the temperature is below 21℃-25℃, open the first inlet cooling water valve to introduce cooling water or heating water into the storage tank jacket. Alternatively, if the temperature is above 21℃-25℃, open the first inlet heating water valve to introduce heating water into the storage tank jacket, maintaining the deionized water temperature inside the tank at 21℃-25℃. Then, sequentially open the storage tank outlet valve, the second test valve, the third test valve, the fourth test valve, and the seventh test valve. The test filter (without a filter element) should return to the storage tank through the return port. Start the test pump and open the... The filtrate collection valve allows the deionized water to enter the filtrate collector. The second test valve is adjusted to achieve the set test flow rate. The flow rate is displayed by a flow meter, the temperature by a thermometer, the pressure by a pressure gauge, and the filter pressure difference by a differential pressure gauge. The test water volume is 25 liters. 5 liters are collected at the collection point, and 500 ml of this water is transferred to an ultra-clean container for particle size analysis. The number of particles of various sizes in each liter is counted, from 5 micrometers to 15 micrometers, 15 micrometers to 50 micrometers, 50 micrometers to 100 micrometers, and particles larger than 100 micrometers. The first particle size count is obtained and recorded. Proceed to step S12.

[0032] Step S12: Particle shedding test:

[0033] Close the second test valve and test pump, install the test filter element in the test filter, open the second test valve and test pump, introduce deionized water into the test pipeline, collect the filtrate at the outlet of the filtrate collection valve using a filtrate collector at a flow rate of 1.1 times the preset flow rate, adjust the second test valve to make the test flow rate reach the preset flow rate, display the flow rate through the flow meter, temperature through the thermometer, pressure through the pressure gauge, and filter pressure difference through the differential pressure gauge. The test water volume is 25 liters, collect 5 liters at the collection point, and take 500 ml of it into an ultra-clean container for particle size analysis; use the particle size analyzer to detect the number of particles in the collected liquid, count the number of various particle sizes per liter, from 5 micrometers to 15 micrometers, 15 micrometers to 50 micrometers, 50 micrometers to 100 micrometers, and the number of particles larger than 100 micrometers, obtain and record the second particle size count; subtract the first particle size count from the second particle size count to obtain the particle size count of the particle shedding test; proceed to step S13.

[0034] Step S13: Empty the test system:

[0035] First, remove the test filter element, then drain all fluid from the outlet of the filtrate collection valve.

[0036] Furthermore, the filter element used in the durability testing method must be a filter element that has passed the first bubble point test or permeability test. The durability testing method includes the following steps:

[0037] Step S21: Pipeline self-cleaning;

[0038] Open the inlet deionized water valve to introduce deionized water filtered by the first inlet filter into the storage tank. Measure the deionized water level to the preset value using the level gauge. Start the stirring motor and agitator. If the temperature is below 21℃-25℃, open the first inlet cooling water valve to introduce cooling or heating water into the storage tank jacket. Alternatively, if the temperature is above 21℃-25℃, open the first inlet heating water valve to introduce heating water into the storage tank jacket, maintaining the deionized water temperature in the storage tank at 21℃-25℃. Then, sequentially open the storage tank outlet valve, the second test valve, the third test valve, and the... Test valves four and seven, test filters without filter elements, return to the storage tank through the storage tank return port, start the test pump to allow deionized water to return to the storage tank through the storage tank return port, adjust the second test valve to make the test flow rate reach the set value, display the flow rate through the flow meter, temperature through the thermometer, pressure through the pressure gauge, and filter differential pressure through the differential pressure gauge, and perform circulation self-cleaning in the performance testing system for nuclear power plant filters, open the second sampling valve to take samples for testing, and when there are fewer than 6000 particles larger than 2μm per 100ml, the self-cleaning ends; proceed to step S22;

[0039] Step S22: Durability test;

[0040] Stop the test pump, install the test filter element into the test filter, start the test pump, and maintain the test for 6 hours at the set flow rate and specified temperature to end the test;

[0041] Each test temperature increase is 10 degrees, with a maximum of 95 degrees, and the heating rate is no more than 5 degrees per minute; proceed to step S23;

[0042] Proceed to step S23: Empty the test system;

[0043] After the test, wait for the filter temperature to drop to room temperature, then drain all fluid from the outlet of the filtrate collection valve; proceed to step S24.

[0044] Step S24: Filter Cartridge Inspection

[0045] After draining the water from the test system, remove the filter element for visual inspection and test the first bubble point or permeability.

[0046] Furthermore, the filter element used for the behavioral test must be a filter element that has passed the first bubble point test or the permeability test; the behavioral test method includes the following steps:

[0047] Step S31: Pipeline self-cleaning;

[0048] Step S31 is the same as step S21; after completion, proceed to step S32;

[0049] Step S32: Behavioral experiment;

[0050] Stop the test pump, install the test filter element in the test filter, start the test pump to circulate the test system, adjust the second and third test valves to achieve a flow rate of 15 L / min, close the second test valve, open the first test valve, add particulate matter to the storage tank, based on a filtration area of ​​0.6 square meters for a 10-inch filter element, the particulate matter addition rate must be 390-410 g / hour, and the total volume of the particulate matter mixture solution should be 10 liters. From the start of adding particulate matter, start the stirrer and stirring motor to ensure uniform mixing of the particulate matter. Record the differential pressure of the test filter every hour using a differential pressure gauge. Maintain a constant flow rate and temperature for 6 hours to end the test, or end the test when the differential pressure of the test filter reaches 200 kPa-220 kPa. The temperature increase for each test is 10 degrees, with a maximum of 95 degrees, and the heating rate for each test does not exceed 5 degrees per minute; proceed to step S33.

[0051] Step S33: Empty the test system;

[0052] Step S33 is the same as step S21.

[0053] Furthermore, the filter element used for the attack test must be a filter element that has passed the first bubble point test or permeability test; the attack test method includes the following steps:

[0054] Step S41: Pipeline self-cleaning;

[0055] As in step S21; after completion, proceed to step S42;

[0056] Step S42: Attack Test;

[0057] Stop the test pump, install the test filter element in the test filter, start the test pump to circulate the test system, adjust the second and third test valves to make the flow rate reach 15L / min, adjust the second cold water inlet valve or the second hot water inlet valve to make the test temperature after the second inlet water filter reach 21℃-25℃, record the pressure difference and temperature, then continue to adjust the second cold water inlet valve or the second hot water inlet valve to make the test temperature after the second inlet water filter reach 28℃-32℃, stabilize for 15 minutes, open the first test valve and close the second test valve;

[0058] Add particulate matter to the storage tank. Based on a filtration area of ​​0.6 square meters for a 10-inch filter element, the particulate matter addition rate is 390-410 g / hour, and the total volume of the particulate matter mixture is 10 liters. Start the stirrer and stirring motor when adding the particulate matter to ensure uniform mixing. Record the differential pressure of the test filter every hour using a differential pressure gauge. Maintain a constant flow rate and temperature for 6 hours to end the test, or end the test when the differential pressure of the test filter reaches 200-220 kPa. The temperature increase for each test is 10 degrees Celsius, with a maximum of 95 degrees Celsius, and the heating rate does not exceed 5 degrees Celsius per minute. Proceed to step S43.

[0059] Step S43: Empty the test system:

[0060] Step S43 is the same as step S21; proceed to step S44;

[0061] Step S44: Filter element inspection. After draining the water from the test circuit, remove the filter element for visual inspection and test the first bubble point or permeability.

[0062] Furthermore, the filter element used for the attack test must be a filter element that has passed the first bubble point test or permeability test; the temperature change test includes the following steps:

[0063] Step S51: Pipeline self-cleaning;

[0064] Step S51 is the same as step S21; after completion, proceed to step S52.

[0065] Step S52: Temperature change test;

[0066] Stop the test pump, install the test filter element in the test filter, start the test pump to circulate the test system, adjust the second and third test valves to achieve a flow rate of 15 L / min, adjust the second cold water inlet valve or the second hot water inlet valve to achieve a test temperature of 21℃-25℃ after passing through the water filter, and record the pressure difference and temperature. Then continue to adjust the second cold water inlet valve or the second hot water inlet valve to achieve a test temperature of 28℃-32℃ after passing through the second water inlet filter. After stabilization, quickly open the second test valve to the maximum, perform one thermal shock, with each test temperature increase being 10 degrees, not exceeding 95 degrees. After completion, proceed to step S53.

[0067] Step S53: Empty the test system;

[0068] Step S53 is the same as step S21; proceed to step S54;

[0069] Step S54: Filter cartridge inspection;

[0070] After draining the water from the test circuit, remove the filter element for visual inspection and test the first bubble point or permeability.

[0071] Furthermore, the filter element used for the attack test must be a filter element that has passed the first bubble point test or permeability test; the method for testing the temperature change of the clogging filter element includes the following steps:

[0072] Step S61: Pipeline self-cleaning;

[0073] Step S61 is the same as step S21; after completion, proceed to step S62.

[0074] Step S62: Temperature change test of clogged filter element;

[0075] Stop the test pump, install the test filter element in the test filter, start the test pump to circulate the test system, and adjust the second and third test valves to achieve a flow rate of 15 L / min. Adjust the second inlet cold water valve or the second inlet hot water valve to ensure the test temperature after passing through the water filter reaches 21℃-25℃. Record the pressure difference and temperature. Then continue adjusting the second inlet cold water valve or the second inlet hot water valve to ensure the test temperature after passing through the second inlet water filter reaches 28℃-32℃. Stabilize for 15 minutes, open the first test valve, close the second test valve, and add particulate matter to the storage tank, using a 10-inch filter element with a 0.6 square meter filtration area. Based on the standard of 390-410 g / h, the total volume of the particulate matter mixture solution is 10 liters. When the particulate matter is first added, start the stirrer and stirring motor to make the particulate matter mix evenly. When the pressure difference of the test filter reaches 200 kPa-220 kPa, open the second test valve and close the first test valve. Adjust the second inlet cold water valve (33) or the second inlet hot water valve so that the test temperature after the second inlet water filter reaches 28℃-32℃. After stabilization, quickly open the second test valve to the maximum. The test ends with one thermal shock. The temperature increase value for each test is 10 degrees, and the maximum does not exceed 95 degrees. Proceed to step S63.

[0076] Step S63: Empty the test system;

[0077] Step S63 is the same as step S21; proceed to step S64;

[0078] Step S64: Filter cartridge inspection;

[0079] After draining the water from the test circuit, remove the filter element for visual inspection and test the first bubble point or permeability.

[0080] Furthermore, the filter element used for the attack test must be a filter element that has passed the first bubble point test or the permeability test; the permeability test method includes the following steps:

[0081] Step S71: Permeability test;

[0082] Open the inlet deionized water valve to introduce deionized water filtered by the first inlet filter into the storage tank. Measure the deionized water level to the preset value using the level gauge. Start the stirring motor and agitator. If the temperature is below 21℃-25℃, open the first inlet cooling water valve to introduce cooling or heating water into the storage tank jacket. If the temperature is above 21℃-25℃, open the first inlet heating water valve to introduce heating water into the storage tank jacket, maintaining the deionized water temperature in the storage tank at 21℃-25℃. Sequentially open the storage tank outlet valve, the second test valve, the third test valve, the fourth test valve, and the seventh test valve. The test filter without a filter element returns to the storage tank through the storage tank return port. Start the test pump. The deionized water is returned to the storage tank through the return port. The second test valve is adjusted to make the test flow rate reach the set value. The flow rate is displayed by the flow meter, the temperature by the thermometer, the pressure by the pressure gauge, and the filter differential pressure by the differential pressure gauge. The system for testing the performance of nuclear power plant filters undergoes self-cleaning circulation. The second and third test valves are adjusted to make the pressure difference across the test filter reach the set value. A test filter element is installed in the test filter, and the outlet collection valve is opened to allow the liquid to drain. The flow rate is displayed by the flow meter, the temperature by the thermometer, the pressure by the pressure gauge, and the filter differential pressure by the differential pressure gauge. If the pressure on the pressure gauge remains stable within 10 seconds, the test ends.

[0083] Compared with the prior art, the embodiments of the present invention, by designing a tank heating and cooling device, a filter testing device, and a filter system self-cleaning device, can realize a performance testing system and testing method for nuclear power plant filters to test the particle shedding performance, durability performance, behavior performance, attack performance, temperature change performance, filter element clogging temperature change performance, and permeability performance of the filter; thus solving the problem that the prior art cannot complete the testing of the performance testing system for nuclear power plant filters. Attached Figure Description

[0084] Figure 1 This is a schematic diagram of the structure of the present invention;

[0085] Figure 2 This is a schematic flowchart of the particle shedding test method of the present invention;

[0086] Figure 3 This is a schematic flowchart of the durability testing method of the present invention;

[0087] Figure 4 This is a flowchart illustrating the behavioral testing method of the present invention;

[0088] Figure 5 This is a schematic diagram illustrating the process of the attack testing method of the present invention;

[0089] Figure 6 This is a schematic diagram of the flow chart of the temperature change test method of the present invention;

[0090] Figure 7 This is a schematic flowchart of the temperature change test method for the clogged filter element of the present invention.

[0091] Figure 8 This is a schematic diagram illustrating the flow of the permeability testing method of the present invention.

[0092] The attached figures are labeled as follows:

[0093] (1) - First heating water inlet valve; (35) - Second heating water inlet valve; (2) - First cooling water inlet valve; (33) - Second cooling water inlet valve; (3) - Ionized water inlet valve; (4) - First water inlet filter; (34) - Second water inlet filter; (5) - Level gauge; (6) - Pressure gauge; (7) - Jacketed water inlet valve; (8) - Tank inlet; (9) - Tank return outlet; (10) Agitator; (11) - Agitator motor; (12) - Tank (13) Jacket outlet valve; (14) Tank outlet valve; (15) Jacket return valve; (16) Cooling water outlet valve; (17) Heating water outlet valve; (18) Filtrate collection valve; (19) Sixth test valve; (20) Third test valve; (21) Fourth test valve; (23) Seventh test valve; (28) Fifth test valve; (38) First test valve; (46) Second test valve; (48) First sampling valve; (4 9) - Second sampling valve; (25) - Third filter; (26) - First filter; (27) - Second filter; (40) - Test filter; (47) - Test pump; (31) - Second thermometer; (44) - First thermometer; (32) - Second temperature sensor; (45) - First temperature sensor; (24) - Second pressure gauge; (29) - First pressure gauge; (36) - Third pressure gauge; (42) - Fourth pressure gauge; (22) - Fourth pressure sensor; (30) - Second pressure sensor; (37) - First pressure sensor; (43) - Third pressure sensor; (39) - Differential pressure gauge; (50) - Filtration collector; (55) - Cooling water outlet; (54) - Cooling water return outlet; (52) - Hot water pipe outlet; (51) - Hot water pipe return outlet; (53) - Hot water unit; (56) - Chiller unit; (57) - Deionized water inlet; (41) - Flow meter. Detailed Implementation

[0094] To make the objectives, technical solutions, and advantages of this invention clearer, the various embodiments of this invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will understand that many technical details have been provided in the various embodiments of this invention to facilitate a better understanding of this application. However, the technical solutions claimed in the claims of this application can be implemented even without these technical details and with various variations and modifications based on the following embodiments.

[0095] The first embodiment of the present invention relates to a performance testing system for nuclear power plant filters, such as... Figure 1 As shown, it includes:

[0096] A tank heating and cooling device (100) is connected to the performance testing system for nuclear power plant filters; the tank heating and cooling device (100) heats or cools the test solution in the performance testing system for nuclear power plant filters;

[0097] One end of the storage tank heating and cooling device (100) is connected to one end of the filter testing device (200); the filter testing device (200) is used to test the filter under test;

[0098] One end of the filter system self-cleaning device (300) is connected to the other end of the filter testing device (200), and the other end of the filter system self-cleaning device (300) is connected to the inlet of the storage tank heating and cooling device (100); the filter system self-cleaning device (300) performs self-cleaning filtration on the test solution before or after the filter testing device (200) is tested; the filter system self-cleaning device (300) tests the performance testing system for nuclear power plant filters before or after the test.

[0099] The performance testing system for nuclear power plant filters disclosed in this embodiment, through the design of a tank heating and cooling device, a filter testing device, and a filtration system self-cleaning device, can realize the performance testing system and testing method for nuclear power plant filters to test particle shedding performance, durability performance, behavior performance, attack performance, temperature change performance, filter element clogging temperature change performance, and permeability performance; thus solving the problem that the existing technology cannot complete the testing of performance testing systems for nuclear power plant filters.

[0100] To achieve the above-mentioned technical effects, such as Figure 1 As shown, the tank heating and cooling device (100) further includes:

[0101] The storage tank (12) has a water inlet (8) connected to the outlet of the ion water valve (3); a first test valve (38) is connected in parallel on the storage tank (12); a third pressure gauge (36) and a first pressure sensor (37) are connected in series on the pipeline between the storage tank (12) and the first test valve (38); and a storage tank outlet valve (14) is connected to the bottom of the storage tank (12).

[0102] A level gauge (5) and a pressure gauge (6) are connected to the interlayer on one side of the storage tank (12); the outlet of the first inlet filter (4) is connected to the interlayer of the storage tank (12); the outlet of the first inlet heating water valve (1) and the outlet of the first inlet cooling water valve (2) are connected to the inlet of the first inlet water filter (4); the outlet of the hot water unit (51) is connected to the inlet of the first inlet heating water valve (1); the inlet of the first inlet cooling water valve (2) is connected to the outlet of the chiller unit (55);

[0103] On the other side of the storage tank (12), the inlet of the heating water valve (17) and the inlet of the cooling water valve (16) are respectively connected to the interlayer; the outlet of the heating water valve (17) is connected to the return water port (52) of the hot water unit; the outlet of the cooling water valve (16) is connected to the return water port (54) of the chiller unit.

[0104] The outlet at the bottom of the storage tank (12) is connected to the inlet of the test pump (47); the outlet of the test pump (47) is connected to the inlet of the first test valve (38) and the inlet of the second test valve (46), respectively.

[0105] A storage tank outlet valve (14) is installed at the lower part of the storage tank (12); a jacket inlet valve (7) is installed at the upper part of the storage tank; a jacket outlet valve (13) is installed at the upper part of the jacket of the storage tank (12), with the inlet of the jacket and the outlet of the jacket outlet valve (13) connected to the jacket return device (15).

[0106] The above structure forms the mechanism of the tank heating and cooling device (100), which can achieve the technical effects of heating or cooling.

[0107] To achieve the above-mentioned technical effects, such as Figure 1 As shown, the filter testing apparatus (200) further includes:

[0108] The test filter (40) is connected to the outlet of the second test valve (46) at its inlet. The fourth pressure gauge (42), the third pressure sensor (43), the first thermometer (44), and the first temperature sensor (45) are connected in series on the pipe between the test filter (40) and the second test valve (46).

[0109] The first sampling valve (48) and the second sampling valve (49) are connected to the two ends of the test filter (40) respectively; the two ends of the test filter (40) are simultaneously connected in parallel to the two ends of the differential pressure gauge (39) and the two ends of the flow meter (41);

[0110] The self-cleaning device (300) of the filtration system is connected to the outlet of the test filter (40).

[0111] The filter testing device (200) is mainly used to test the filter under test for particle shedding performance, durability performance, behavior performance, impact performance, temperature change performance, clogging filter element temperature change performance, and permeability performance.

[0112] To achieve the above-mentioned technical effects, such as Figure 1 As shown, the self-cleaning device (300) of the filtration system also includes:

[0113] The first filter (26) is connected to the inlet of the third test valve (20) at the outlet of the test filter (40), and the outlet of the third test valve (20) is connected to the inlet of the first filter (26);

[0114] A second temperature sensor (32), a second thermometer (31), a second pressure sensor (30), and a first pressure gauge (29) are sequentially installed on the pipeline from the inlet of the third test valve (20) to the outlet of the test filter (40);

[0115] The outlet of the first filter (26) is connected to the inlet of the fourth test valve (21) and the inlet of the fifth test valve (28); the outlet of the fourth test valve (21) and the inlet of the third test valve (20) are connected in series to the two ends of the sixth test valve (19); and a filtrate collection valve (18) is connected to the inlet of the third test valve (20), and a filtrate collector (50) is set below the filtrate collection valve (18);

[0116] The outlet of the second filter (27) and the fifth test valve (28) are connected to the inlet of the second filter (27); the outlet of the second filter (27) is connected to the inlet of the seventh test valve (23); a fourth pressure sensor (22) and a second pressure gauge (24) are installed in the pipeline between the seventh test valve (23) and the fourth test valve (21); the outlet of the seventh test valve (23) is connected to the inlet of the third filter (25), and the outlet of the third filter (25) is connected to the storage tank (12) through the storage tank return port (9);

[0117] The outlet of the third test valve (20) is connected to the outlet of the second inlet filter (34); the outlet of the second inlet heating water valve (35) and the outlet of the second inlet cooling water valve (33) are connected to the inlet of the second inlet filter (34); the inlet of the second inlet heating water valve (35) and the inlet of the second inlet cooling water valve (33) are connected to the return water port (52) of the hot water unit and the return water port (54) of the chiller unit, respectively.

[0118] To achieve the above-mentioned technical effects, such as Figure 1 As shown, a stirrer (10) is fixed inside the storage tank (12), and a stirring motor (11) is fixedly connected above the stirrer (10); the stirring motor (11) drives the stirrer (10) to rotate, which is used to accelerate the heating or cooling of the storage tank heating and cooling device (100).

[0119] To achieve the above-mentioned technical effects, such as Figure 1 As shown, the cooling water outlet (55) and cooling water return outlet (54) are both connected to the chiller unit (56); the chiller unit (56) is also connected to a deionized water inlet (57) on one side.

[0120] The hot water pipe outlet (52) and the hot water pipe return port (51) are both connected to the hot water unit (53).

[0121] A second embodiment of the present invention also discloses a testing method for a performance testing system for nuclear power plant filters, characterized in that it includes:

[0122] For the test filter (40), the particle shedding performance, durability performance, behavior performance, attack performance, impact performance, temperature change performance, clogging filter element temperature change performance and permeability performance are tested according to the particle shedding test method, durability test method, behavior test method, impact test method, impact test method, clogging filter element temperature change performance and permeability test method.

[0123] like Figure 2 As shown, the particle shedding test method includes the following steps:

[0124] Step S11, Blank test:

[0125] Open the inlet deionized water valve (3) to introduce deionized water into the storage tank (12), start the stirring motor (11), and start the stirrer (10). If the temperature is below 21℃-25℃, open the first inlet cooling water valve (2) to introduce cooling water or heating water into the storage tank jacket. Or if the temperature is above 21℃-25℃, open the first inlet heating water valve (1) to introduce heating water into the storage tank jacket, so that the temperature of deionized water in the storage tank (12) is maintained at 21℃-25℃. Open the storage tank outlet valve (14), the second test valve (46), the third test valve (20), the fourth test valve (21), and the seventh test valve (23) in sequence. The test filter (40) without filter element returns to the storage tank (12) through the storage tank return port (9). Start the test pump (47), open the filtrate collection valve (18) to allow the deionized water to enter the filtrate collector (50), adjust the second test valve (46) to make the test flow rate reach the set value, display the flow rate through the flow meter (41), the temperature through the thermometer (44), the pressure gauge (42) to display the pressure, and the differential pressure gauge (39) to display the filter differential pressure. The test water volume is 25 liters, collect 5 liters at the collection point, take 500 ml of it into an ultra-clean container and test it with a particle size analyzer; count the number of various particle sizes in each liter, from 5 micrometers to 15 micrometers, 15 micrometers to 50 micrometers, 50 micrometers to 100 micrometers and above 100 micrometers, obtain and record the first particle size count; proceed to step S12;

[0126] Step S12: Particle shedding test:

[0127] Close the second test valve (46) and the test pump (47), install the test filter element in the test filter (40), open the second test valve (46) and the test pump (47), introduce deionized water into the test pipeline, collect the filtrate at the outlet of the filtrate collection valve (18) using the filtrate collector (50) at a flow rate of 1.1 times the preset flow rate, adjust the second test valve (46) to make the test flow rate reach the preset flow rate, display the flow rate through the flow meter (41), the temperature through the thermometer (44), the pressure gauge (42), and the differential pressure gauge (43). 39) Display the filter pressure difference. The test water volume is 25 liters. Collect 5 liters at the collection point and take 500 ml of it into an ultra-clean container for particle size analysis. Use the particle size analyzer to detect the number of particles in the collected liquid and count the number of each particle size in each liter, from 5 micrometers to 15 micrometers, 15 micrometers to 50 micrometers, 50 micrometers to 100 micrometers, and particles larger than 100 micrometers. Obtain and record the second particle size count. Subtract the first particle size count from the second particle size count to obtain the particle size count for the particle shedding test. Proceed to step S13.

[0128] Step S13: Empty the test system:

[0129] First, remove the test filter element, and then drain all fluid at the outlet of the filtrate collection valve (18).

[0130] like Figure 3 As shown, the filter element used in the durability testing method must be a filter element that has passed the first bubble point test or permeability test. The durability testing method includes the following steps:

[0131] Step S21: Pipeline self-cleaning;

[0132] Open the inlet deionized water valve (3) to introduce deionized water filtered by the first inlet water filter (4) into the storage tank (12). Measure the deionized water to the preset value using the level gauge (5). Start the stirring motor (11) and start the stirrer (10). If the temperature is below 21℃-25℃, open the first inlet cooling water valve (2) to introduce cooling water or heating water into the storage tank jacket. Or, if the temperature is above 21℃-25℃, open the first inlet heating water valve (1) to introduce heating water into the storage tank jacket, so that the temperature of the deionized water in the storage tank (12) is maintained at 21℃-25℃. Then, sequentially open the storage tank outlet valve (14), the second test valve (46), the third test valve (20), and the fourth test valve (45). 21) The seventh test valve (23) is opened, and the test filter (40) without filter element is returned to the storage tank (12) through the storage tank return port (9). The test pump (47) is started so that the deionized water returns to the storage tank (12) through the storage tank return port (9). The second test valve (46) is adjusted so that the test flow rate reaches the set value. The flow rate is displayed by the flow meter (41), the temperature is displayed by the thermometer (44), the pressure is displayed by the pressure gauge (42), and the differential pressure gauge (39) displays the filter differential pressure. The filter is circulated and self-cleaned in the performance testing system for nuclear power plant filters. The second sampling valve (49) is opened to take samples for testing. When there are fewer than 6000 particles larger than 2μm per 100ml, the self-cleaning ends. Proceed to step S22.

[0133] Step S22: Durability test;

[0134] Stop the test pump (47), install the test filter element in the test filter (40), start the test pump (47), and maintain the test for 6 hours at the set flow rate and specified temperature to end the test;

[0135] Each test temperature increase is 10 degrees, with a maximum of 95 degrees, and the heating rate is no more than 5 degrees per minute; proceed to step S23;

[0136] Proceed to step S23: Empty the test system;

[0137] After the test, wait for the filter temperature to drop to room temperature, then drain all fluid at the outlet of the filtrate collection valve (18); proceed to step S24;

[0138] Step S24: Filter Cartridge Inspection

[0139] After draining the water from the test system, remove the filter element for visual inspection and test the first bubble point or permeability.

[0140] like Figure 4 As shown, the filter cartridge used for behavioral testing must be a filter cartridge that has passed the first bubble point test or permeability test; the behavioral testing method includes the following steps:

[0141] Step S31: Pipeline self-cleaning;

[0142] Step S31 is the same as step S21; after completion, proceed to step S32;

[0143] Step S32: Behavioral experiment;

[0144] Stop the test pump (47), load the test filter element into the test filter (40), start the test pump (47) to circulate the test system, adjust the second test valve (46) and the third test valve (20) to achieve a flow rate of 15 L / min, close the second test valve (46), open the first test valve (38), and add particulate matter to the storage tank (12). Based on the filtration area of ​​0.6 square meters for a 10-inch filter element, the amount of particulate matter added must be 390 g - 410 g / hour. The particulate matter mixture solution... The total volume is 10 liters. When the particles are added, start the stirrer (10) and stirring motor (11) to make the particles mix evenly. Record the pressure difference of the test filter 40 every hour through the differential pressure gauge (39). Maintain a constant flow rate and temperature for 6 hours to end the test, or end the test when the pressure difference of the test filter (40) reaches 200KPa-220KPa. The temperature increase value for each test is 10 degrees, and the maximum is no more than 95 degrees. The heating rate for each test is no more than 5 degrees per minute. Proceed to step S33.

[0145] Step S33: Empty the test system;

[0146] Step S33 Step S21.

[0147] like Figure 5 As shown, the filter element used for the attack test must be a filter element that has passed the first bubble point test or permeability test; the attack test method includes the following steps:

[0148] Step S41: Pipeline self-cleaning;

[0149] As in step S21; after completion, proceed to step S42;

[0150] Step S42: Attack Test;

[0151] Stop the test pump (47) from running, install the test filter element in the test filter (40), start the test pump (47) to make the test system circulate, adjust the second test valve (46) and the third test valve (20) to make the flow rate reach 15L / min, adjust the second inlet cold water valve (33) or the second inlet hot water valve (35) to make the test temperature after passing through the second inlet water filter (34) reach 21℃-25℃, record the pressure difference and temperature, and then continue to adjust the second inlet cold water valve (33) or the second inlet hot water valve (35) to make the test temperature after passing through the second inlet water filter (34) reach 28℃-32℃, stabilize for 15 minutes, open the first test valve 38, and close the second test valve (46);

[0152] Add particulate matter to the storage tank (12). Based on the filtration area of ​​0.6 square meters for a 10-inch filter element, the amount of particulate matter added is 390-410 g / hour. The total volume of the particulate matter mixture is 10 liters. When the particulate matter is added, start the stirrer (10) and stirring motor (11) to make the particulate matter mix evenly. Record the pressure difference of the test filter (40) once every hour through the differential pressure gauge (39). Maintain a constant flow rate and temperature for 6 hours to end the test, or end the test when the pressure difference of the test filter (40) reaches 200 kPa-220 kPa. The temperature increase for each test is 10 degrees, with a maximum of 95 degrees. The heating rate for each test is no more than 5 degrees per minute. Proceed to step S43.

[0153] Step S43: Empty the test system:

[0154] Step S43 is the same as step S21; proceed to step S44;

[0155] Step S44: Filter element inspection. After draining the water from the test circuit, remove the filter element for visual inspection and test the first bubble point or permeability.

[0156] like Figure 6 As shown, the filter element used for the attack test must be a filter element that has passed the first bubble point test or permeability test; the temperature change test includes the following steps:

[0157] Step S51: Pipeline self-cleaning;

[0158] As in step S21; after completion, proceed to step S52;

[0159] Step S52: Temperature change test;

[0160] Stop the test pump (47) and install the test filter element in the test filter (40). Start the test pump (47) to circulate the test system. Adjust the second test valve (46) and the third test valve (20) to make the flow rate reach 15 L / min. Adjust the second cold water inlet valve (33) or the second hot water inlet valve (35) to make the test temperature reach 21℃-25℃ after passing through the water filter (34). Record the pressure difference and temperature. Then continue to adjust the second cold water inlet valve (33) or the second hot water inlet valve (35) to make the test temperature reach 28℃-32℃ after passing through the second water filter (34). After stabilization, quickly open the second test valve (46) to the maximum. One thermal shock, the test temperature increases by 10 degrees each time, and the maximum does not exceed 95 degrees. After completion, proceed to step S53.

[0161] Step S53: Empty the test system;

[0162] Step S53 is the same as step S21; proceed to step S54;

[0163] Step S54: Filter cartridge inspection;

[0164] After draining the water from the test circuit, remove the filter element for visual inspection and test the first bubble point or permeability.

[0165] like Figure 7 As shown, the filter element used for the attack test must be a filter element that has passed the first bubble point test or permeability test; the clogging filter element temperature change test method includes the following steps:

[0166] Step S61: Pipeline self-cleaning;

[0167] As in step S21; after completion, proceed to step S62;

[0168] Step S62: Temperature change test of clogged filter element;

[0169] Stop the test pump 47, install the test filter element in the test filter (40), start the test pump (47) to circulate the test system, adjust the second test valve (46) and the third test valve (20) to make the flow rate reach 15L / min, adjust the second inlet cold water valve (33) or the second inlet hot water valve (35) to make the test temperature reach 21℃-25℃ after passing through the water filter (34), record the pressure difference and temperature, then continue to adjust the second inlet cold water valve (33) or the second inlet hot water valve (35) to make the test temperature reach 28℃-32℃ after passing through the second inlet water filter (34), stabilize for 15 minutes, open the first test valve (38), close the second test valve (46), add particulate matter to the storage tank (12) with a 10-inch filter element. Based on a filtration area of ​​0.6 square meters, the concentration is 390-410 g / hour, and the total volume of the particulate matter mixture solution is 10 liters. When the particulate matter is added, start the stirrer (10) and stirring motor (11) to make the particulate matter mix evenly. When the pressure difference of the test filter (40) reaches 200-220 kPa, open the second test valve (46), close the first test valve (38), and adjust the second cold water inlet valve (33) or the second hot water inlet valve (35) so that the test temperature after passing through the second inlet water filter (34) reaches 28-32°C. After stabilization, quickly open the second test valve (46) to the maximum. The test ends after one thermal shock. The temperature increase for each test is 10 degrees, and the maximum does not exceed 95 degrees. Proceed to step S63.

[0170] Step S63: Empty the test system;

[0171] Step S63 is the same as step S21; proceed to step S64;

[0172] Step S64: Filter cartridge inspection;

[0173] After draining the water from the test circuit, remove the filter element for visual inspection and test the first bubble point or permeability.

[0174] like Figure 8 As shown, the filter element used for the attack test must be a filter element that has passed the first bubble point test or the permeability test; the permeability test method includes the following steps:

[0175] Step S71: Permeability test;

[0176] Open the inlet deionized water valve (3) to introduce deionized water filtered by the first inlet water filter (4) into the storage tank (12). Measure the deionized water to the preset value using the level gauge (5). Start the stirring motor (11) and start the stirrer (10). If the temperature is below 21℃-25℃, open the first inlet cooling water valve (2) to introduce cooling water or heating water into the storage tank jacket. Or, if the temperature is above 21℃-25℃, open the first inlet heating water valve (1) to introduce heating water into the storage tank jacket, so that the temperature of the deionized water in the storage tank (12) is maintained at 21℃-25℃. Sequentially open the storage tank outlet valve (14), the second test valve (46), the third test valve (20), the fourth test valve (21), and the seventh test valve (23). The test filter (40) without a filter element returns to the storage tank (12) through the storage tank return port (9). Start the test pump (47). Deionized water is returned to the storage tank (12) through the return port (9). The second test valve (46) is adjusted to make the test flow rate reach the set value. The flow rate is displayed by the flow meter (41), the temperature is displayed by the thermometer (44), the pressure is displayed by the pressure gauge (42), and the differential pressure gauge (39) displays the filter differential pressure. The system for testing the performance of nuclear power plant filters is circulated and self-cleaned. The second test valve (46) and the third test valve (20) are adjusted to make the differential pressure across the test filter (40) reach the set value. The test filter element is installed in the test filter (40). The outlet collection valve (18) is opened to discharge the liquid. The flow rate is displayed by the flow meter (41), the temperature is displayed by the thermometer (44), the pressure is displayed by the pressure gauge (42), and the differential pressure gauge (39) displays the filter differential pressure. If the pressure on the pressure gauge (42) remains stable within 10 seconds, the test ends.

[0177] Those skilled in the art will understand that the above embodiments are specific examples of implementing the present invention, and in practical applications, various changes in form and detail may be made without departing from the spirit and scope of the present invention.

Claims

1. A performance testing system for nuclear power plant filters, characterized in that, include: A tank heating and cooling device (100) is connected to the performance testing system for nuclear power plant filters; the tank heating and cooling device (100) heats or cools the test solution in the performance testing system for nuclear power plant filters. A filter testing device (200) is connected to one end of the storage tank heating and cooling device (100); The filter system self-cleaning device (300) is connected to one end of the filter testing device (200), and the other end of the filter system self-cleaning device (300) is connected to the inlet of the storage tank heating and cooling device (100); the filter system self-cleaning device (300) performs self-cleaning filtration on the test solution before or after the filter testing device (200) is tested. The self-cleaning device (300) of the filtration system further includes: The outlet of the first filter (26) and the test filter (40) is connected to the inlet of the third test valve (20), and the outlet of the third test valve (20) is connected to the inlet of the first filter (26). A second temperature sensor (32), a second thermometer (31), a second pressure sensor (30), and a first pressure gauge (29) are sequentially installed on the pipeline from the inlet of the third test valve (20) to the outlet of the test filter (40). The outlet of the first filter (26) is connected to the inlet of the fourth test valve (21) and the inlet of the fifth test valve (28); the outlet of the fourth test valve (21) and the inlet of the third test valve (20) are connected in series to the two ends of the sixth test valve (19); and a filtrate collection valve (18) is connected to the inlet of the third test valve (20), and a filtrate collector (50) is provided below the filtrate collection valve (18); The outlet of the second filter (27) and the fifth test valve (28) are connected to the inlet of the second filter (27); the outlet of the second filter (27) is connected to the inlet of the seventh test valve (23); a fourth pressure sensor (22) and a second pressure gauge (24) are installed in the pipeline between the seventh test valve (23) and the fourth test valve (21); the outlet of the seventh test valve (23) is connected to the inlet of the third filter (25), and the outlet of the third filter (25) is connected to the storage tank (12) through the storage tank return port (9); The outlet of the third test valve (20) is connected to the outlet of the second inlet filter (34); the inlet of the second inlet filter (34) is connected to the outlet of the second inlet heating water valve (35) and the outlet of the second inlet cooling water valve (33); the inlet of the second inlet heating water valve (35) is connected to the outlet (51) of the hot water unit; the inlet of the second inlet cooling water valve (33) is connected to the outlet (55) of the chiller unit.

2. The performance testing system for nuclear power plant filters according to claim 1, characterized in that, The aforementioned tank heating and cooling device (100) further includes: The storage tank (12) has a water inlet (8) connected to the outlet of the ion water valve (3); a first test valve (38) is connected in parallel on the storage tank (12); a third pressure gauge (36) and a first pressure sensor (37) are connected in series on the pipeline between the storage tank (12) and the first test valve (38); and a storage tank outlet valve (14) is connected to the bottom of the storage tank (12). A level gauge (5) and a pressure gauge (6) are connected to the interlayer on one side of the storage tank (12); the outlet of the first inlet filter (4) is connected to the interlayer of the storage tank (12); the outlet of the first inlet heating water valve (1) and the outlet of the first inlet cooling water valve (2) are respectively connected to the inlet of the first inlet heating water valve (1); the outlet of the hot water unit (51) is connected to the inlet of the first inlet heating water valve (1); the inlet of the first inlet cooling water valve (2) is connected to the outlet of the chiller unit (55). The inlet of the heating water valve (17) and the inlet of the cooling water valve (16) are respectively connected to the interlayer on the other side of the storage tank (12); the outlet of the heating water valve (17) is connected to the return water port (52) of the hot water unit; the outlet of the cooling water valve (16) is connected to the return water port (54) of the chiller unit. The outlet at the lower part of the storage tank (12) is connected to the inlet of the test pump (47); the outlet of the test pump (47) is connected to the inlet of the first test valve (38) and the inlet of the second test valve (46), respectively. A storage tank outlet valve (14) is provided at the lower part of the storage tank (12); a jacket inlet valve (7) is provided at the upper part of the storage tank; an inlet of a jacket outlet valve (13) is provided at the upper part of the jacket of the storage tank (12), and the outlet of the jacket outlet valve (13) is connected to a jacket return device (15).

3. The performance testing system for nuclear power plant filters according to claim 2, characterized in that, The filter testing device (200) further includes: The test filter (40) is connected to the outlet of the second test valve (46) at its inlet. A fourth pressure gauge (42), a third pressure sensor (43), a first thermometer (44), and a first temperature sensor (45) are connected in series on the pipe between the test filter (40) and the second test valve (46). A first sampling valve (48) and a second sampling valve (49) are connected to the two ends of the test filter (40) respectively; the two ends of the test filter (40) are simultaneously connected in parallel to the two ends of the differential pressure gauge (39) and the two ends of the flow meter (41); The self-cleaning device (300) of the filtration system is connected to the outlet of the test filter (40).

4. The performance testing system for nuclear power plant filters according to claim 3, characterized in that, A stirrer (10) is fixed inside the storage tank (12), and a stirring motor (11) is fixedly connected above the stirrer (10); the stirring motor (11) drives the stirrer (10) to rotate, which is used to accelerate the heating or cooling of the storage tank heating and cooling device (100); The return water inlet (54) and the outlet water outlet (55) of the chiller unit are both connected to the chiller unit (56); a deionized water inlet (57) is also connected to one side of the chiller unit (56). The return water inlet (52) and the outlet water outlet (51) of the hot water unit are both connected to the hot water unit (53).

5. The testing method for the performance testing system of nuclear power plant filters according to claim 4, characterized in that, include: For the test filter (40), the particle shedding performance, durability performance, behavior performance, impact performance, impact test performance, temperature change test performance, clogging filter element temperature change test performance and permeability performance are tested according to the particle shedding test method, durability test method, behavior test method, impact test method, impact test method, temperature change test method, clogging filter element temperature change performance and permeability test method. The filter element used for the attack test must be a filter element that has passed the first bubble point test or permeability test; the attack test method includes the following steps: Step S21: Pipeline self-cleaning; Open the inlet deionized water valve (3) to introduce deionized water into the storage tank (12). Measure the deionized water to the preset value using the level gauge (5). Start the stirring motor (11) and start the stirrer (10). If the temperature is higher than 25℃, open the first inlet cooling water valve (2) to introduce cooling water into the storage tank jacket. Or, if the temperature is lower than 21℃, open the first inlet heating water valve (1) to introduce heating water into the storage tank jacket, so that the temperature of the deionized water in the storage tank (12) is maintained at 21℃-25℃. Sequentially open the storage tank outlet valve (14), the second test valve (46), the third test valve (20), the fourth test valve (21), and the seventh test valve (23) for the test filtration without a filter element. The device (40) returns to the storage tank (12) through the storage tank return port (9). The test pump (47) is started so that the deionized water returns to the storage tank (12) through the storage tank return port (9). The second test valve (46) is adjusted so that the test flow rate reaches the set value. The flow rate is displayed by the flow meter (41), the temperature is displayed by the first thermometer (44), the pressure is displayed by the fourth pressure gauge (42), and the differential pressure gauge (39) displays the filter differential pressure. The device is circulated and self-cleaned in the performance testing system for nuclear power plant filters. The second sampling valve (49) is opened to take samples for testing. When there are fewer than 6000 particles larger than 2μm per 100ml, the self-cleaning ends. After step S21 is completed, step S42 is entered. Step S42: Attack Test; Stop the test pump (47) from running, install the test filter element in the test filter (40), start the test pump (47) to circulate the test system, adjust the second test valve (46) and the third test valve (20) to make the flow rate reach 15L / min, adjust the second inlet cooling water valve (33) or the second inlet heating water valve (35) to make the test temperature after passing through the second inlet water filter (34) reach 21℃-25℃, record the pressure difference and temperature, and then continue to adjust the second inlet cooling water valve (33) or the second inlet heating water valve (35) to make the test temperature after passing through the second inlet water filter (34) reach 28℃-32℃, stabilize for 15 minutes, open the first test valve (38), and close the second test valve (46); Add particulate matter to the storage tank (12). Based on the filtration area of ​​0.6 square meters for a 10-inch filter element, the amount of particulate matter added is 390-410 g / hour. The total volume of the particulate matter mixture is 10 liters. When the particulate matter is added, start the stirrer (10) and stirring motor (11) to make the particulate matter mix evenly. Record the pressure difference of the test filter (40) once every hour through the differential pressure gauge (39). Maintain a constant flow rate and temperature for 6 hours to end the test, or end the test when the pressure difference of the test filter (40) reaches 200 kPa-220 kPa. The temperature increase value for each test is 10 degrees, and the maximum is no more than 95 degrees. The heating rate for each test is no more than 5 degrees per minute. Proceed to step S43. Step S43: Empty the test system: Step S44: Filter element inspection. After draining the water from the test circuit, remove the filter element for visual inspection and test the first bubble point or permeability.

6. The testing method for a performance testing system for nuclear power plant filters according to claim 5, characterized in that, The particle shedding test method includes the following steps: Step S11, Blank test: Open the inlet deionized water valve (3) to introduce deionized water into the storage tank (12), start the stirring motor (11), and start the stirrer (10). If the temperature is higher than 25℃, open the first inlet cooling water valve (2) to introduce cooling water into the storage tank jacket, or if the temperature is lower than 21℃, open the first inlet heating water valve (1) to introduce heating water into the storage tank jacket, so that the temperature of the deionized water in the storage tank (12) is maintained at 21℃-25℃; open the storage tank outlet valve (14), the second test valve (46), the third test valve (20), the fourth test valve (21), and the seventh test valve (23) in sequence. The test filter (40) without filter element returns to the storage tank (12) through the storage tank return port (9), and start the test pump ( 47) Open the filtrate collection valve (18) to allow the deionized water to enter the filtrate collector (50). Adjust the second test valve (46) to make the test flow rate reach the set value. The flow rate is displayed by the flow meter (41), the temperature is displayed by the first thermometer (44), the pressure is displayed by the fourth pressure gauge (42), and the differential pressure gauge (39) displays the filter pressure difference. The test water volume is 25 liters. Collect 5 liters at the collection point and take 500 ml of it into an ultra-clean container for testing with a particle size analyzer. Count the number of various particle sizes in each liter, from 5 micrometers to 15 micrometers, 15 micrometers to 50 micrometers, 50 micrometers to 100 micrometers and above 100 micrometers, and obtain and record the first particle size count; proceed to step S12. Step S12: Particle shedding test: Close the second test valve (46) and the test pump (47), install the test filter element in the test filter (40), open the second test valve (46) and the test pump (47), introduce deionized water into the test pipeline, collect the filtrate at the outlet of the filtrate collection valve (18) using the filtrate collector (50) at a flow rate of 1.1 times the preset flow rate, adjust the second test valve (46) to make the test flow rate reach the preset flow rate, display the flow rate through the flow meter (41), display the temperature through the first thermometer (44), display the pressure through the fourth pressure gauge (42), and display the differential pressure gauge (39). The filter pressure difference is displayed. The test water volume is 25 liters. 5 liters are collected at the collection point. 500 ml of this water is placed in an ultra-clean container and tested with a particle size analyzer. The particle size analyzer is used to detect the number of particles in the collected liquid. The number of particles of various sizes in each liter is counted, from 5 micrometers to 15 micrometers, 15 micrometers to 50 micrometers, 50 micrometers to 100 micrometers, and particles larger than 100 micrometers. The second particle size count is obtained and recorded. The second particle size count is subtracted from the first particle size count to obtain the particle size count of the particle shedding test. Proceed to step S13. Step S13: Empty the test system: First, remove the test filter element, and then drain all fluid at the outlet of the filtrate collection valve (18).

7. The testing method for the performance testing system of nuclear power plant filters according to claim 5, characterized in that, The filter element used in the durability testing method must be a filter element that has passed the first bubble point test or permeability test. The durability testing method includes the following steps: Step S21: Pipeline self-cleaning; After step S21 is completed, proceed to step S22; Step S22: Durability test; Stop the test pump (47) from running, put the test filter element into the test filter (40), start the test pump (47), and maintain the test for 6 hours at the set flow rate and the specified temperature to end the test; Each test temperature increase is 10 degrees, with a maximum of 95 degrees, and the heating rate is no more than 5 degrees per minute; proceed to step S23; Proceed to step S23: Empty the test system; After the test, wait for the filter temperature to drop to room temperature, then drain all fluid at the outlet of the filtrate collection valve (18); proceed to step S24; Step S24: Filter Cartridge Inspection After draining the water from the test system, remove the filter element for visual inspection and test the first bubble point or permeability.

8. The testing method for the performance testing system of nuclear power plant filters according to claim 5, characterized in that, The filter cartridge used for behavioral testing must be a filter cartridge that has passed a first bubble point test or a permeability test; the behavioral testing method includes the following steps: Step S21: Pipeline self-cleaning; After step S21 is completed, proceed to step S32; Step S32: Behavioral experiment; Stop the test pump (47), load the test filter element into the test filter (40), start the test pump (47) to circulate the test system, adjust the second test valve (46) and the third test valve (20) to achieve a flow rate of 15 L / min, close the second test valve (46), open the first test valve (38), add particulate matter into the storage tank (12), based on the filtration area of ​​0.6 square meters for a 10-inch filter element, the amount of particulate matter added must be 390 g - 410 g / hour, and the total particulate matter mixture solution... The volume is 10 liters. When the particles are added, start the stirrer (10) and stirring motor (11) to make the particles mix evenly. Record the pressure difference of the test filter (40) once every hour through the differential pressure gauge (39). Maintain a constant flow rate and temperature for 6 hours to end the test, or end the test when the pressure difference of the test filter (40) reaches 200KPa-220KPa. The temperature increase value for each test is 10 degrees, and the maximum is no more than 95 degrees. The heating rate for each test is no more than 5 degrees per minute. Proceed to step S33. Step S33: Empty the test system.

9. The testing method for a performance testing system for nuclear power plant filters according to claim 5, characterized in that; The temperature change test includes the following steps: Step S21: Pipeline self-cleaning; After step S21 is completed, proceed to step S52; Step S52: Temperature change test; Stop the test pump (47) from running, install the test filter element in the test filter (40), start the test pump (47) to circulate the test system, adjust the second test valve (46) and the third test valve (20) to make the flow rate reach 15L / min, adjust the second inlet cooling water valve (33) or the second inlet heating water valve (35) to make the test temperature reach 21℃-25℃ after passing through the second inlet water filter (34), record the pressure difference and temperature, and then continue to adjust the second inlet cooling water valve (33) or the second inlet heating water valve (35) to make the test temperature reach 28℃-32℃ after passing through the second inlet water filter (34). After stabilization, quickly open the second test valve (46) to the maximum. One thermal shock, the test temperature increases by 10 degrees each time, and the maximum does not exceed 95 degrees. After completion, proceed to step S53. Step S53: Empty the test system; Step S54: Filter cartridge inspection; After draining the water from the test circuit, remove the filter element for visual inspection and test the first bubble point or permeability.

10. The testing method for a performance testing system for nuclear power plant filters according to claim 5, characterized in that, The aforementioned method for testing the temperature change of a clogged filter element includes the following steps: Step S21: Pipeline self-cleaning; After step S21 is completed, proceed to step S62; Step S62: Temperature change test of clogged filter element; Stop the test pump (47), install the test filter element in the test filter (40), start the test pump (47) to circulate the test system, adjust the second test valve (46) and the third test valve (20) to make the flow rate reach 15 L / min, adjust the second inlet cooling water valve (33) or the second inlet heating water valve (35) to make the test temperature reach 21℃-25℃ after passing through the second inlet water filter (34), record the pressure difference and temperature, then continue to adjust the second inlet cooling water valve (33) or the second inlet heating water valve (35) to make the test temperature reach 28℃-32℃ after passing through the second inlet water filter (34), stabilize for 15 minutes, open the first test valve (38), close the second test valve (46), add particulate matter to the storage tank (12) at 10 inches Based on the filtration area of ​​0.6 square meters per inch filter element, the concentration is 390-410 g / hour. The total volume of the particulate matter mixture solution is 10 liters. When the particulate matter is added, start the stirrer (10) and stirring motor (11) to make the particulate matter mix evenly. When the pressure difference of the test filter (40) reaches 200KPa-220KPa, open the second test valve (46) and close the first test valve (38). Adjust the second inlet cooling water valve (33) or the second inlet heating water valve (35) so that the test temperature after passing through the second inlet water filter (34) reaches 28℃-32℃. After stabilization, quickly open the second test valve (46) to the maximum. The test ends with one thermal shock. The temperature increase value for each test is 10 degrees, and the maximum does not exceed 95 degrees. Proceed to step S63. Step S63: Empty the test system; Step S64: Filter cartridge inspection; After draining the water from the test circuit, remove the filter element for visual inspection and test the first bubble point or permeability.

11. The testing method for a performance testing system for nuclear power plant filters according to claim 5, characterized in that, The aforementioned penetration testing method includes the following steps: Step S71: Permeability test; Open the inlet deionized water valve (3) to introduce deionized water filtered by the first inlet water filter (4) into the storage tank (12). Measure the deionized water to the preset value using the level gauge (5). Start the stirring motor (11) and start the stirrer (10). If the temperature is higher than 25℃, open the first inlet cooling water valve (2) to introduce cooling water into the storage tank jacket. Or, if the temperature is lower than 21℃, open the first inlet heating water valve (1) to introduce heating water into the storage tank jacket, so that the temperature of the deionized water in the storage tank (12) is maintained at 21℃-25℃. Sequentially open the storage tank outlet valve (14), the second test valve (46), the third test valve (20), the fourth test valve (21), and the seventh test valve (23). The test filter (40) without a filter element returns to the storage tank (12) through the storage tank return port (9). Start the test pump (47) so that the deionized water returns through the storage tank return port (9). 9) Return to the storage tank (12), adjust the second test valve (46) to make the test flow rate reach the set value, display the flow rate through the flow meter (41), the first thermometer (44) to display the temperature, the fourth pressure gauge (42) to display the pressure, and the differential pressure gauge (39) to display the filter differential pressure; perform self-cleaning circulation in the performance testing system for nuclear power plant filters, adjust the second test valve (46) and the third test valve (20); make the differential pressure before and after the test filter (40) reach the set value, install the test filter element in the test filter (40), open the liquid collection valve (18) to discharge the liquid from the liquid collection valve (18), display the flow rate through the flow meter (41), the thermometer (44) to display the temperature, the fourth pressure gauge (42) to display the pressure, and the differential pressure gauge (39) to display the filter differential pressure. If the pressure of the fourth pressure gauge (42) remains stable within 10 seconds, the test ends.

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