CN113654964B - Water filter element performance test system - Google Patents
Water filter element performance test system Download PDFInfo
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- CN113654964B CN113654964B CN202110855338.5A CN202110855338A CN113654964B CN 113654964 B CN113654964 B CN 113654964B CN 202110855338 A CN202110855338 A CN 202110855338A CN 113654964 B CN113654964 B CN 113654964B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
- G01N15/0826—Investigating permeability by forcing a fluid through a sample and measuring fluid flow rate, i.e. permeation rate or pressure change
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention relates to a water filter element performance test system, which comprises a test loop assembly, a pump body, a filter element shell and a differential pressure sensor, wherein the test loop assembly comprises at least one test loop, the test loop is provided with a flow channel for test liquid to flow through, the test loop assembly has a plurality of different states, and the minimum cross-sectional areas of the flow channels are different from each other in different states; the pump body is connected with the test loop assembly; the filter element shell is used for installing a filter element, is arranged on the test loop assembly and is positioned on one side of the output end of the pump body; this application is through setting up at least one test circuit, and when the state of difference, the minimum cross section of the flow channel in the test circuit is mutually different, through the flow area who changes test liquid promptly, and then changes the flow of test liquid to play the regulation to the flow of test liquid through the filter core, in order to realize only testing through the filter core of a test bench to different flow demands.
Description
Technical Field
The invention relates to the technical field of performance test of water filter elements of nuclear islands, in particular to a performance test system of a water filter element.
Background
The nuclear island water filter element for the nuclear power station is mainly used for removing corrosion products and suspended solid particles existing in water in a colloid form, and is important equipment for ensuring stable operation of the nuclear power station.
At present, the nuclear island water filter cores of pressurized water reactor nuclear power stations in commercial operation in China are imported, research and development of the nuclear island water filter cores are developed for breaking through foreign monopoly, and the core performance of the filter cores needs to be tested repeatedly in the research and development process, wherein the core performance indexes comprise: resistance to flow fatigue, resistance to rupture strength, and resistance to high temperatures.
However, the flow range of the filter element which can be tested by a single test bed at present in China is too small, so that one test bed can not test the performance of the water filter elements in a plurality of flow ranges.
Disclosure of Invention
Therefore, a water filter element performance testing system is needed to be provided for solving the problem that one test bench in the prior art cannot test the performance of the water filter element in a plurality of flow ranges.
A water filter element performance test system, comprising:
a test circuit assembly including at least one test circuit, the test circuit assembly having a flow channel through which a test fluid flows, the test circuit assembly having a plurality of different states in which minimum cross-sectional areas of the flow channel are different from each other;
the pump body is connected with the test loop assembly and is used for pumping test liquid into the flow channel;
the filter element shell is used for installing a filter element, is arranged on the test loop assembly and is positioned on one side of the output end of the pump body; and
and the differential pressure sensor is used for detecting the differential pressure between the input end and the output end of the filter element shell and/or the filter element.
In one embodiment, the number of the pump bodies is at least two, the input ends of at least two pump bodies are connected to the test circuit assembly in common, and the output ends of at least two pump bodies are connected to the test circuit assembly in common.
In one embodiment, the test loop assembly comprises: the pump body is connected with the first main testing loop, the input end of the first branch testing loop and the input end of the second branch testing loop are commonly connected to the output end of the first main testing loop, and the inner diameter of the first branch testing loop is smaller than that of the second branch testing loop; the filter element shell comprises a first filter element shell and a second filter element shell, the first filter element shell is arranged on the first test loop, and the second filter element shell is arranged on the second test loop.
In one embodiment, the test loop assembly further comprises:
the first three-way valve is arranged on the first test loop and is positioned on one side of the input end of the first filter element shell;
the first bypass pipe is connected with the first three-way valve and used for bypassing a filter element on the first filter element shell;
the second three-way valve is arranged on the second test loop and is positioned on one side of the input end of the second filter element shell;
and the second bypass pipe is connected with the second three-way valve and is used for bypassing the filter element on the second filter element shell.
In one embodiment, the test loop assembly further comprises: the flow sensor is used for detecting the flow of the test liquid passing through the filter element;
the first testing loop and the second testing loop are respectively provided with the flow sensors.
In one embodiment, the test loop assembly further comprises: the heat exchanger is used for adjusting the temperature of the test liquid passing through the filter element;
the first branch test loop and the second branch test loop are respectively provided with the heat exchanger.
In one embodiment, the test loop assembly further comprises:
the output ends of the first branch test loop and the second branch test loop are connected to the second main test loop;
the input end and the output end of the third test loop are both connected with the second main test loop;
the purification filter is arranged on the third test loop;
and the check valve is arranged on the third test loop and is positioned on one side of the outlet end of the purification filter.
In one embodiment, the test system further comprises:
the test circuit assembly comprises a test liquid container, a test circuit assembly and a control circuit, wherein the test liquid container is used for bearing test liquid, the input end of the test circuit assembly is connected with the outlet end of the test liquid container, and the output end of the test circuit assembly is connected with the inlet end of the test liquid container.
In one embodiment, at least two of the pumps include at least a first pump and a second pump, and the testing system further includes:
a first liquid return pipe;
a third three-way valve having a first end, a second end, and a third end; the first end of the third three-way valve is connected with the output end of the first pump body, the second end of the third three-way valve is connected with the output end of the second pump body, the third end of the third three-way valve is connected with the input end of the first liquid return pipe, and the output end of the first liquid return pipe extends to a position below the liquid level of the test liquid in the test liquid container.
In one embodiment, the test system further comprises:
the input end of the liquid discharge pipe extends below the liquid level of the test liquid in the test liquid container, and the output end of the liquid discharge pipe is used for discharging the test liquid;
and the liquid discharge pump is connected with the liquid discharge pipe.
In one embodiment, the test system further comprises:
a contaminated liquid container;
the stirrer is arranged in the polluted liquid container;
and the contamination injection pump is arranged between the test liquid container and the contamination liquid container and is used for injecting the contamination liquid in the contamination liquid container into the test liquid container to form the test liquid.
In one embodiment, the test system further comprises:
the input end of the second liquid return pipe is connected with the outlet end of the polluted liquid container, and the output end of the second liquid return pipe extends below the liquid level of the polluted liquid in the polluted liquid container;
and the circulating pump is arranged on the second liquid return pipe.
In one embodiment, the test system further comprises:
and the heaters are respectively arranged on the test liquid container and the polluted liquid container and are respectively used for heating the test liquid in the test liquid container and the polluted liquid in the polluted liquid container.
The test loop assembly is provided with the test loop assembly, the pump body, the filter element shell and the differential pressure sensor, the pump body is connected with the test loop assembly, the filter element shell is arranged on the test loop assembly and is positioned at one side of the output end of the pump body, and the filter element is arranged on the filter element shell, namely the pump body can press test liquid into the filter element through the test loop assembly so as to test the flow in the filter element; the test loop assembly has multiple different states, and when the states are different, the minimum cross-sectional areas of the flow channels are different from each other, so that the minimum cross-sectional area of the flow channel can be changed by changing the state of the test loop assembly, the flow of test liquid flowing through the filter element is changed, and the test of the filter element with different flow requirements by only one test bench is realized.
Drawings
FIG. 1 is a schematic diagram of a water filter element performance testing system in one embodiment;
reference numerals: 100-testing a loop assembly; 110-a pump body; 111-a first pump body; 112-a second pump body; 120-a cartridge housing; 121-a first cartridge housing; 122-a second cartridge housing; 123-differential pressure sensor; 124-a pressure sensor; 130-a first main test loop; 131-a fourth three-way valve; 140-a first test loop; 141-a flow sensor; 142-a heat exchanger; 143-inlet and outlet ball valves; 150-a second test loop; 160-a first bypass line; 161-a first three-way valve; 170-a second bypass line; 171-a second three-way valve; 190-a second main test loop; 191-a drain valve; 192-a purification filter; 193-one-way valve;
200-a test solution container; 210-a first liquid return pipe; 211-a third three-way valve; 220-drain pipe; 221-a drain pump; 250-electromagnetic valve; 260-pneumatic ball valve; 270-a heater; 280-a temperature sensor; 290-a liquid level sensor;
300-a contaminated liquid container; 310-a stirrer; 320-a sewage injection pump; 330-a second liquid return pipe; 331-sewage injection circulating pump.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a performance testing system of a water filter element according to an embodiment of the present invention, and an embodiment of the present invention provides a performance testing system of a water filter element, including: the test device comprises a test loop assembly 100, a pump body 110, a filter element shell 120 and a differential pressure sensor 123, wherein the pump body 110 is arranged on the test loop assembly 100 and used for pressing test liquid into a flow channel; the filter element housing 120 is used for installing a filter element, the filter element housing 120 is arranged on the test loop assembly 100 and is positioned on one side of the output end of the pump body 110, and test liquid pressed into the flow channel through the pump body 110 can flow to the filter element; the differential pressure sensor 123 is configured to detect a differential pressure between the input and output of the filter cartridge housing and/or the filter cartridge. The test circuit assembly 100 comprises at least one test circuit having a flow channel for the test fluid to flow through, the test circuit assembly 100 having a plurality of different states in which the minimum cross-sections of the flow channel are different from each other.
In this embodiment, the test circuit assembly 100 may be two or more test circuits, each test circuit has a different inner diameter, and each test circuit is provided with one filter element housing 120, that is, the test circuit assembly is in different states by selecting test circuits with different inner diameters, when the test circuit assembly is in different states, the minimum cross-sectional areas of the flow channels corresponding to the test circuits with different inner diameters are different, so that the flow rates of the test liquids passing through different filter elements are different.
The test loop assembly 100 is provided with the test loop assembly 100, the pump body 110, the filter element housing 120 and the differential pressure sensor 123, the pump body 110 is connected with the test loop assembly 100, the filter element housing 120 is arranged on the test loop assembly 100 and is positioned on one side of the output end of the pump body 110, and the filter element is installed on the filter element housing 120, that is, the pump body 110 can press test liquid into the filter element through the test loop assembly 100, so as to test the flow rate in the filter element; the test loop assembly has a plurality of different states, and when the test loop assembly is in different states, the minimum cross-sectional areas of the flow channels are different from each other, so that the minimum cross-sectional area of the flow channel can be changed by changing the state of the test loop assembly 100, the flow of test liquid flowing through the filter element is changed, and the test of the filter element with different flow requirements through only one test bench is realized.
In another embodiment, the difference in the minimum cross-sectional area of the flow channel when the test circuit assembly 100 is in different states can be achieved in a variety of ways. In this embodiment, the testing circuit assembly 100 is a testing circuit, the testing circuit is sequentially provided with a pump body 110, an adjusting valve and a filter element housing 120, the pump body 110 is used for pressing the testing liquid into the filter element, and in the pressing process, according to the requirements of the filter elements with different flow rates, the size of the minimum cross section of the flow channel can be adjusted through the adjusting valve, so that the flow rate of the testing liquid passing through the filter element in the flow channel can be adjusted.
In other embodiments, when the test circuit assembly 100 may include two or more test circuits, each test circuit may also include a regulating valve, and the regulating valve may be combined with the test circuits having different inner diameters to achieve precise flow control.
In some embodiments, the number of the pump bodies 110 is at least two, the input ends of the two pump bodies 110 are commonly connected to the test circuit assembly 100, and the output ends of the two pump bodies 110 are commonly connected to the test circuit assembly 100.
In this embodiment, the number of the pump bodies 110 is two, the two pump bodies are respectively the first pump body 111 and the second pump body 112, the two pump bodies are connected in parallel to the test circuit assembly 100, and the flow rate of the test liquid in the flow channel can be changed within a large range by changing the number of the pump bodies 110 connected to the test circuit assembly 100 and simultaneously adjusting the output pressure of the pump bodies 110, so that the test range of the filter element can be enlarged.
In another embodiment, where the number of pump bodies 110 is multiple, and multiple pump bodies are connected in parallel to the test circuit assembly 100, it is possible to change only the number of pump bodies 110 that are connected to the test circuit assembly 100, thereby changing the flow rate of the test fluid in the flow channel.
In some embodiments, the test loop assembly 100 includes: the pump body 110 is connected to the first main test loop 130, the input end of the first branch test loop 140 and the input end of the second branch test loop 150 are commonly connected to the output end of the first main test loop 130, and the inner diameter of the first branch test loop 140 is smaller than that of the second branch test loop 150; the cartridge housing 120 includes a first cartridge housing 121 disposed on the first test circuit 140 and a second cartridge housing 122 disposed on the second test circuit 150, i.e., the cartridge housing 122
In this embodiment, one end of the differential pressure sensor 123 is connected to the input ends of the first filter cartridge housing and the second filter cartridge housing, the other end of the differential pressure sensor 123 is connected to the output ends of the first filter cartridge housing and the second filter cartridge housing, and meanwhile, the pressure sensor 124 is arranged at the input end or the output end of the first filter cartridge housing and the second filter cartridge housing, and is used for recording the pressure of the test liquid passing through the filter cartridge in the test process.
The test circuit assembly 100 further includes a fourth three-way valve 131, where the fourth three-way valve 131 includes a first end, a second end, and a third end, the first end of the fourth three-way valve 131 is connected to the first main test circuit 130, the second end is connected to the first branch test circuit 140, and the third end is connected to the second branch test circuit 150, that is, the first main test circuit 130 realizes flow diversion through the fourth three-way valve 131; optionally, the pump body 110 is a vertical multistage centrifugal pump, and the test flow is adjusted by adjusting the speed with a frequency converter.
In order to obtain a wide flow range in the test circuit assembly 100 such that the flow through the filter element covers the full flow range of the nuclear power plant (full flow range: 4m3/h-70m 3/h), varying the test liquid flow rate is combined with varying the test liquid flow area in this embodiment. In particular use, the test loop assembly 100 has a first state, a second state, and a third state; when the test loop assembly 100 is in the first state, the filter element is installed on the first filter element housing 121, the first pump body 111 is opened, the third end of the fourth three-way valve 131 is opened, that is, the first pump body 111 can pump the test solution into the filter element in the first filter element housing 121 on the first test loop 140, at this time, the output pressure of the first pump body 111 can be adjusted, and further the flow range in the filter element is 4m 3 /h～12m 3 The test range for the filter element is now low flow (relative to the test range for the filter element at full flow).
With test circuit assembly 100 in the second state, the filter cartridge is installed in the second positionOn the filter element housing 122, the first pump body 111 is opened, the second end of the fourth three-way valve 131 is opened, that is, the first pump body 111 can pump the test solution into the filter element in the second filter element housing 122 on the second test loop 150, at this time, because the inner diameter of the second test loop 150 is greater than the inner diameter of the first test loop 140, when the output pressure of the first pump body 111 continues to increase (continues to increase on the basis of the output pressure of the first pump body 111 in the first state), the flow rate pumped into the filter element in the second filter element housing 122 continues to increase, at this time, the flow rate adjustable range passing through the filter element is 12m 3 /h～36m 3 The test range for the filter element is now the mid flow (filter element test range relative to full flow).
When the test circuit assembly 100 is in the third state, the filter element is mounted on the second filter element housing 122, the first pump body 111 is opened, the second pump body 112 is opened, and the second end of the fourth three-way valve 131 is opened, that is, the first pump body 111 and the second pump body 112 can simultaneously act on the filter element pumping the test liquid into the second filter element housing 122 on the second test circuit 150, at this time, the first pump body 111 and the second pump body 112 simultaneously act on the filter element for increasing the flow rate in the test circuit assembly 100, and simultaneously cooperate with the second test circuit 150 (relative to the first test circuit 140) with a large inner diameter, the flow rate of the test liquid in the flow channel can be further increased, and when in use, the output pressure of the first pump body 111 and the second pump body 112 can be adjusted, so that the flow rate range in the filter element is 36m 3 /h～72m 3 The test range for the filter element at high flow (relative to the test range for the filter element at full flow) is/h. Therefore, the performance test of all filter elements in the full flow range in the nuclear power plant can be realized on one test bench by testing the three states of the loop assembly 100.
In some embodiments, the test loop assembly 100 further comprises: a first bypass 160 and a first three-way valve 161, a second bypass 170 and a second three-way valve 171, the first three-way valve 161 being disposed on the first branch test circuit 140 and located at one side of the input end of the first cartridge housing 121, the first bypass 160 being connected to the first three-way valve 161 for bypassing the cartridge in the first cartridge housing 121; a second three-way valve 171 is disposed on the second branch test circuit 150 and is located at one side of the input end of the second filter cartridge housing 122, and a second bypass pipe 170 is connected to the second three-way valve 171 for bypassing the filter cartridge on the second filter cartridge housing 122.
Specifically, in the anti-flow fatigue test in the test performance test, the pulse circulation needs to be performed from 0 to the maximum value to 0 for the test flow value, in this embodiment, the first bypass pipe 160 and the first three-way valve 161 are provided, when the small-flow filter element is tested, the first pump body 111 and the first branch test loop 140 may be first opened, and after the flow passing through the filter element in the first filter element housing 121 reaches the maximum value, the first bypass pipe 160 is then opened by the first three-way valve 161, that is, the first bypass pipe 160 bypasses the first branch test loop 140, so that the flow passing through the filter element in the first filter element housing 121 is 0, and the pulse circulation is performed sequentially, that is, the pulse circulation from 0 to the maximum value to 0 for the test flow value in the small-flow filter element may be realized.
The pulse cycle of the test flow value from 0 to the maximum value to 0 in the medium flow filter element and the large flow filter element is the same as the operation procedure of the small flow filter element, except that the medium flow filter element and the large flow filter element are bypassed by the second bypass pipe 170 and the second three-way valve 171.
Through the setting of bypass valve, need not frequently to adjust the pump body 110, can prolong the life of the pump body 110, first three-way valve 161, second three-way valve 171 adopt coaxial three-way ball valve, can prevent that the three-way valve from being blockked up by the pollutant, realize smoothly containing the control of gluing thick pollutant of easily condensing.
In some embodiments, the test circuit assembly further includes a flow sensor 141 for detecting flow through the filter element, and the first and second test circuits 140 and 150 each have a flow sensor 141 disposed thereon.
Specifically, the flow sensor 141 includes a first flow sensor and a second flow sensor, the first flow sensor is disposed on the first branch test circuit 140, the second flow sensor is disposed on the second branch test circuit 150, in order that the first flow sensor always reflects the flow rate of the filter element in the first filter element housing 121, therefore, the first flow sensor should be disposed on the first branch test circuit 140 and located on one side of the first three-way valve 161 close to the output end of the first branch test circuit 140, so as to prevent that the first flow sensor cannot reflect the flow rate of the filter element in the first filter element housing 121 in real time after the first bypass pipe 160 bypasses the filter element in the first filter element housing 121, and similarly, the second flow sensor should be disposed on the second branch test circuit 150 and located on one side of the second three-way valve 171 close to the output end of the second branch test circuit 150.
In some embodiments, the temperature has a large influence on the solid-liquid state of the test solution, and the performance test needs to be performed at a certain temperature to eliminate the influence of the temperature, and therefore, the test circuit assembly 100 further includes: the heat exchangers used for adjusting the temperature of the test liquid passing through the filter element are respectively connected to the first main test loop 130 and the first branch test loop 140, and optionally, the heat exchangers 142 can be plate heat exchangers, and the heat exchange of the plate heat exchangers can rapidly heat or cool the test liquid.
In some embodiments, the test loop assembly 100 further comprises a second main test loop 190 and a third branch test loop, a purge filter 192, and a one-way valve 193, the outputs of the first branch test loop and the second branch test loop being connected to the second main test loop 190; the input end and the output end of the third branch test loop are both connected with the second main test loop 190; a purge filter 192 and a check valve 193 are sequentially provided on the third test circuit, and the check valve 193 is located on the side of the outlet end of the purge filter 192.
Specifically, the input end of the third test loop is connected with the second main test loop 190 through a three-way valve, when testing the anti-flowing fatigue test and the anti-rupture test, the test liquid is directly output through the second main test loop 190, when the high temperature test is performed, because the high temperature test belongs to the destructive test, the test liquid needs to be filtered by the purifying filter 192, therefore, the end of the three-way valve communicated with the second main test loop 190 needs to be opened, on one hand, before the high temperature test, the purifying filter 192 is used for filtering impurities in the water, on the other hand, in the high temperature test process, when the filter element is ruptured, the filter element is used for filtering the impurities in the test liquid, and the impurities are prevented from damaging other test equipment in the circulating process.
In some embodiments, the test system further comprises a test fluid container 200, the test fluid container 200 being adapted to carry a test fluid, an input end of the test loop assembly 100 being connected to an output end of the test fluid container 200, and an output end of the test loop assembly 100 being connected to an input end of the test fluid container 200.
Specifically, the test fluid container 200 is used to provide test fluid to the test circuit assembly 100 and to receive test fluid filtered through a cartridge mounted on the test circuit assembly 100. Thus, the input end of the test circuit assembly 100 is connected to the output end of the test liquid container 200, and the output end of the test circuit assembly 100 is connected to the input end of the test liquid container 200. In addition, the test solution is formed by water and pollutants according to a certain proportion, and in order to prevent the pollutant particles in the test solution from settling, the test solution container 200 adopts a double-layer heat insulation structure to prevent the pollutant particles from solidifying when the temperature is lower; the upper part of the test liquid container 200 is of a cylindrical structure, the bottom of the test liquid container is designed to be conical, the conical angle is 90 degrees, the conical angle of 90 degrees can reduce the bonding dead angle of the test liquid container 200, and the deposition of pollutants in the test liquid is reduced. The effective volume of the test solution container 200 is designed to be 25% of the test rated flow, and the test solution container 200 is respectively provided with a liquid level sensor 290 and a temperature sensor 280 for detecting the liquid level and the temperature in the test solution container 200.
In some embodiments, to prevent the contaminant particles in the test fluid container 200 from settling, the testing system further includes a first liquid return pipe 210 and a third three-way valve 211, one end of the third three-way valve 211 is connected to the output end of the first pump body 111, the second end is connected to the output end of the second pump body 112, the third end is connected to the input end of the first liquid return pipe 210, the output end of the first liquid return pipe 210 extends below the test liquid level in the test fluid container 200, that is, a test liquid return flow is formed through the first liquid return pipe 210 and the third three-way valve 211, and the returned test liquid is communicated below the test liquid level in the test fluid container 200 to disturb the test liquid in the test fluid container 200, so as to prevent the contaminant particles in the test fluid container 200 from settling.
In some embodiments, the testing system further comprises a contaminated liquid container 300 and a soil injection pump 320, wherein an agitator 310 is disposed in the contaminated liquid container 300; the contamination-liquid pump 320 is provided between the test liquid container 200 and the contaminated liquid container 300, and is configured to inject the contaminated liquid in the contaminated liquid container 300 into the test liquid container 200 to form a test liquid.
In this embodiment, in the test process, only when the contaminants in the filter element are accumulated to a certain amount, the pressure difference between the input end and the output end of the filter element to be tested can reach the test pressure difference, but because the test liquid circulates in the test loop assembly 100, a certain amount of contaminants are lost (for example, adhered to the inner wall of the test loop assembly 100), the test liquid obtained according to the theoretical ratio often cannot reach the required concentration, and thus the filter element cannot reach the required test pressure difference during the test; when the solubility of pollutants in the test solution is increased again, the pressure difference at two ends of the filter element is easy to exceed the required test pressure difference; therefore, by arranging the contaminated liquid container 300, the contaminated liquid container 300 is independent from the test liquid container 200, and the contaminated liquid with a certain concentration is configured in the contaminated liquid container 300, when the device is used, firstly, a certain amount of clean water is added into the test liquid container 200, then, the contaminated liquid in the contaminated liquid container 300 is injected into the clean water in the test liquid container 200, so that the clean water and the contaminated liquid are uniformly mixed, meanwhile, the pump body 110 is opened, the pump body 110 presses the test liquid into the filter element to be tested, the pressure difference value at the position of the filter element to be tested is recorded through the pressure difference sensor 123, when the pressure difference reaches the set pressure difference, the contamination injection pump 320 is closed, contamination injection is stopped, and then, a test is started, namely, on one hand, the contaminated liquid container 300 is arranged, so that the contaminants can be well dissolved and are not easy to deposit, on the other hand, the preparation of the test liquid is facilitated, and the pressure difference required by the filter element is more easily reached.
Specifically, the upper part of the contaminated liquid container 300 is of a cylindrical structure, the bottom part of the contaminated liquid container is of a conical structure, the conical angle is 90 degrees, and the liquid level sensor 290 and the temperature sensor 280 are arranged on the contaminated liquid container 300, so that the liquid level and the temperature in the contaminated liquid container 300 can be directly detected; the stirrer 310 is used for uniformly dispersing pollutant particles in the polluted liquid container 300, the stirrer 310 comprises a stirring motor, a stirring shaft and a stirring impeller, the stirring impeller is arranged on the stirring shaft, in order to ensure that the stirring impeller of the stirrer 310 can be always positioned below the liquid level of the polluted liquid container 300, the stirring impeller is a double impeller, the stirring shaft is a telescopic stirring shaft, and the height of the stirring impeller can be adjusted according to the liquid level height of the water tank; optionally, the dirt injection pump 320 is a plunger type metering pump, the plunger type metering pump controls the rotating speed of the variable frequency motor through a frequency converter so as to control the dirt injection flow, the rotating speed of the variable frequency motor corresponds to the flow, and the flow in the dirt injection pipe can be displayed in real time.
In some embodiments, the test system further comprises a drain 220, wherein a drain pump 221 is disposed on the drain 220, and an input end of the drain extends below the level of the test solution in the test solution container 200.
Specifically, along with the progress of the sewage injection process, the liquid level in the test liquid container 200 continuously rises, so that the output pressure of the pump body 110 cannot be kept at a fixed value, that is, the flow rate of the test liquid in the test loop assembly 100 cannot be kept at a fixed value, and further the flow rate of the test liquid passing through the filter element to be tested is not constant, so that the pressure difference value of the two sides of the filter element to be tested is easily changed, and the accuracy of the test is finally influenced. Therefore, by providing the drain pipe 220 and installing the liquid level sensor 290 on the test solution container 200, when the liquid level is higher than the set liquid level, the drain pump 221 is turned on to drain the excess liquid in the test solution container 200.
In some embodiments, in order to prevent the contaminant particles in the contaminated liquid container 300 from settling, the testing system further includes a second liquid return pipe 330, an input end of the second liquid return pipe 330 is connected to an output end of the contaminated liquid container 300, an output end of the second liquid return pipe 330 extends to a position below the surface of the contaminated liquid in the contaminated liquid container 300, and a contamination injection circulation pump 331 is disposed on the second liquid return pipe 330.
Specifically, the sewage injection circulating pump 331 adopts a variable-frequency horizontal vortex pump, and the horizontal vortex pump does not change the particle size distribution condition of pollutants; the sewage injection circulating pump 331 is controlled by frequency conversion, and the flow rate and the frequency converter can be automatically controlled, so that the polluted liquid in the polluted liquid container 300 is in a turbulent state, and the accumulation of particulate matters is prevented. Further, the liquid return pipe is further provided with a heat exchanger 142, and optionally, the heat exchanger 142 is a plate heat exchanger 142 and is used for adjusting the temperature of pollutants in the liquid return pipe, so that the test is convenient to perform.
In some embodiments, the testing system further comprises a heater 270, and the test solution container 200 and the contaminated solution container 300 are respectively provided with the heater 270 for heating the test solution in the test solution container 200 and the contaminated solution in the contaminated solution container 300.
Specifically, the heater 270 on the test solution container 200 is an electric heating tube heater, and is directly installed in the water tank, so that the temperature of the test solution can be rapidly increased, and the high temperature resistance test can be conveniently carried out, wherein the temperature of the high temperature resistance test is 80-120 ℃; since the contaminated liquid container 300 has a high concentration of contaminants and the heater 270 is easily contaminated and damaged, the heater 270 on the contaminated liquid container 300 uses a silicon rubber heating tape for keeping the test liquid at room temperature during the test.
In some embodiments, an inlet/outlet ball valve 143 is further disposed on the testing circuit assembly 100, and an inlet/outlet ball valve 143 is disposed at each of the input end and the output end of the filter housing, so as to facilitate cleaning and drying of the filter element, prevent the filter element or the filter element housing 120 from being corroded by residual contaminants, and perform sampling of the testing liquid at the inlet/outlet ball valve 143, so as to facilitate monitoring of the filtering condition of the filter element through the testing liquid sample.
In some embodiments, the present application further includes an automatic liquid adding and draining unit, configured to fill the contaminated liquid container 300 and the test liquid container 200 with water before the test is started, and drain the liquids in the contaminated liquid container 300 and the test liquid container 200 after the test is finished, where the automatic liquid adding and draining unit includes a water delivery and draining pipeline (not shown), a solenoid valve 250, and a pneumatic ball valve 260, where the pneumatic ball valve 260 is used in cooperation with the solenoid valve 250 to remotely control the opening and closing of the water delivery and draining pipeline, and the solenoid valve 250 and the pneumatic ball valve 260 are disposed on the water delivery and draining pipeline, and the number of the solenoid valves 250 is two, one of the two solenoid valves is connected to the inlet end of the test liquid container 200, and the other solenoid valve is connected to the inlet end of the contaminated liquid container 300, and is used to control the water filling into the test liquid container 200 or the contaminated liquid container 300, respectively.
In some embodiments, the water filter element performance test system of the present application is installed on a test bench, and a refrigeration unit is further disposed on the periphery of the test bench, and the refrigeration unit is connected to the heat exchanger 142, and is configured to provide a heat exchange medium for the heat exchanger 142, and is configured to maintain the balance of the test liquid temperature during the test process.
In conclusion, in the research and development of the nuclear island water filter element, the performance test system for the water filter element not only realizes the performance test of the water filter element in a plurality of flow ranges, but also integrates and sets the test conditions required by the flow fatigue resistance test, the rupture resistance test and the high temperature resistance test on one test bed, can simultaneously realize the flow fatigue resistance test, the rupture resistance test and the high temperature resistance test of the filter element, does not need to set an independent test bed, and can greatly save the occupied space of equipment.
In addition, in the test, the required test preparation works are:
opening the electromagnetic valve 250, injecting clear water into the test liquid container 200 and the polluted liquid container 300, and closing the electromagnetic valve 250 to stop water supply when the test liquid container 200 and the polluted liquid container 300 reach required liquid levels;
preparing a pollution liquid according to the target pressure difference and the target flow rate of the filter element to be detected, and then starting a stirrer 310 and a sewage injection circulating pump 331 to stir the pollution liquid;
the usage status of the test circuit assembly 100 is selected according to the flow rate of the filter element to be tested, and the filter element to be tested is mounted on the corresponding filter element housing 120 on the test circuit (hereinafter, the test of the filter element with small flow rate is taken as an example, that is, the test circuit assembly 100 is in the first status).
The specific test process is as follows:
(I) anti-flow fatigue test:
starting the first pump body 111, selecting a proper flow rate to operate within the range of 25% -100% of the rated flow rate of the filter element to be tested, and recording the differential pressure value of the first filter element shell 121;
closing the first pump body 111, installing a low-flow filter element, opening the first pump body 111, operating at the same flow as that of the first filter element shell 121 during testing, and simultaneously starting the heat exchanger 142 to heat or cool the test liquid to a set temperature;
when the temperature of the test liquid in the test loop assembly 100 reaches a set temperature, the sewage injection pump 320 is started, the sewage injection system injects pollutants into the test liquid container 200 according to a set flow, when the liquid level in the test liquid container 200 exceeds a target value, the discharge pump is started to discharge redundant solution in the test liquid container 200 so as to ensure that the liquid level is within a target range value, and when the pressure difference value of the pressure difference meter reaches a set value, the sewage injection pump is closed;
setting the working frequency of the flowing fatigue, realizing that the flow of the filter element to be tested is from 0 to the maximum value through the switching of the first three-way valve 161, then circulating from the maximum value to 0 in sequence, and simultaneously recording the pulse times and the pressure difference value of the pressure difference meter during each pulse;
simultaneously recording temperature, flow and pressure values in the test process, displaying pulse waveforms, and finishing the test when the pulse times reach a set pulse numerical value;
during the whole test period, the variation of the pressure difference of the filter element to be tested (namely the measured total pressure drop minus the pressure drop of the first filter element shell 121) is less than 10%, and the filter element has no obvious flaw, so that the flow fatigue resistance of the filter element is qualified; otherwise, the filter element has unqualified flow fatigue resistance;
closing the first pump body 111, taking out the filter element to be tested, opening the drain valve 191, and discharging the test liquid in the filter to be tested and the test loop assembly 100;
the electromagnetic valve 250 is opened to inject clean water into the test liquid container 200 and the pollution liquid container 300, the pollution injection circulating pump 331 and the first pump body 111 are opened, and the pollution injection system and the test system pipeline are cleaned.
(II) fracture resistance test:
starting the first pump body 111, operating according to 50% -80% of the rated flow of the filter element to be tested, and recording the flow resistance of the shell 120 of the filter element to be tested;
closing the first pump body 111, installing a low-flow filter element, opening the first pump body 111, operating at the same flow as that of the first filter element shell 121 during testing, and simultaneously starting the heat exchanger 142 to heat or cool the test liquid to a set temperature;
when the temperature of the test liquid in the test loop assembly 100 reaches a set temperature, the sewage injection pump 320 is started, the sewage injection system injects pollutants into the test liquid container 200 according to a set flow, when the liquid level in the test liquid container 200 exceeds a target value, the discharge pump is started to discharge redundant solution in the test liquid container 200 so as to ensure that the liquid level is within a target range value, and when the pressure difference value of the pressure difference meter reaches a set value, the sewage injection pump is stopped;
after the filter element to be tested reaches the set pressure difference value, the first pump body 111 is continuously kept running for 30min, the pressure difference value of the filter element to be tested is recorded, and if the pressure difference value of the filter element to be tested is kept unchanged within 30min and the filter element has no defect, the anti-fracture strength of the filter element is qualified; otherwise, the product is unqualified;
closing the first pump body 111, taking out the filter element to be tested, opening the drain valve 191, and discharging the test liquid in the filter to be tested and the test loop assembly 100;
the electromagnetic valve 250 is opened to inject clean water into the test liquid container 200 and the contaminated liquid container 300, and the contaminated injection circulating pump 331 and the first pump body 111 are opened to clean the contaminated injection system and the test system pipeline.
(III) high temperature resistance test, wherein the high temperature test means that the performance of the filter element is tested when the temperature of the test solution is 80-120 ℃:
starting the first pump body 111, operating according to a specified flow rate, and starting the heater 270 to heat the test liquid until the test temperature reaches a set temperature value;
when the temperature of the test liquid in the test loop assembly 100 reaches a set temperature, the sewage injection pump 320 is started, the sewage injection system injects pollutants into the test liquid container 200 according to a set flow, when the liquid level in the test liquid container 200 exceeds a target value, the discharge pump is started to discharge redundant solution in the test liquid container 200 so as to ensure that the liquid level is within a target range value, and when the pressure difference value of the pressure difference meter reaches a set value, the sewage injection pump is closed;
keeping the test loop assembly 100 to circularly operate for 10 minutes, and recording the pressure difference value of the filter element to be tested according to the numerical value of the pressure difference table;
when the filter element differential pressure value is kept stable, keeping the flow and the temperature of the system unchanged, continuously operating for 6 hours, and recording the initial differential pressure value of the filter element to be tested and the differential pressure value of each hour during the operation period;
when the running time of the system reaches the set time, the test is finished;
during the whole test period, under the set high temperature, the variation of the pressure difference value of the filter element to be tested is less than 10%, and the filter element has no flaw, so that the high temperature resistance of the filter element is qualified; otherwise, the high temperature resistance of the filter element is unqualified;
closing the first pump body 111, taking out the filter element to be tested, opening the drain valve 191, and discharging the test liquid in the filter to be tested and the test loop assembly 100;
the electromagnetic valve 250 is opened to inject clean water into the test liquid container 200 and the pollution liquid container 300, the pollution injection circulating pump 331 and the first pump body 111 are opened, and the pollution injection system and the test system pipeline are cleaned.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (11)
1. A water filter element performance test system is characterized by comprising:
a test loop assembly including at least one test loop, the test loop assembly having a flow channel for passage of a test fluid, the test loop assembly having a plurality of different states in which minimum cross-sectional areas of the flow channel are different from one another, the test loop assembly comprising: the pump body is connected with the first main testing loop, the input end of the first branch testing loop and the input end of the second branch testing loop are commonly connected to the output end of the first main testing loop, and the inner diameter of the first branch testing loop is smaller than that of the second branch testing loop;
the pump bodies are connected with the test loop assembly and used for pumping test liquid into the flow channel, the number of the pump bodies is at least two, the input ends of at least two pump bodies are connected to the test loop assembly together, and the output ends of at least two pump bodies are connected to the test loop assembly together;
the filter element shell is used for installing a filter element, the filter element shell is arranged on the test loop assembly and is positioned on one side of the output end of the pump body, the filter element shell comprises a first filter element shell and a second filter element shell, the first filter element shell is arranged on the first test loop, and the second filter element shell is arranged on the second test loop; and
and the differential pressure sensor is used for detecting the differential pressure between the input end and the output end of the filter element shell and/or the filter element.
2. The water filter element performance testing system of claim 1, wherein the test loop assembly further comprises:
the first three-way valve is arranged on the first test loop and is positioned on one side of the input end of the first filter element shell;
the first bypass pipe is connected with the first three-way valve and used for bypassing a filter element on the first filter element shell;
the second three-way valve is arranged on the second test loop and is positioned on one side of the input end of the second filter element shell;
and the second bypass pipe is connected with the second three-way valve and is used for bypassing the filter element on the second filter element shell.
3. The water filter element performance testing system of claim 1, wherein the test loop assembly further comprises: the flow sensor is used for detecting the flow of the test liquid passing through the filter element;
the first testing loop and the second testing loop are respectively provided with the flow sensors.
4. The water filter element performance testing system of claim 1, wherein the test loop assembly further comprises: the heat exchanger is used for adjusting the temperature of the test liquid passing through the filter element;
the first branch test loop and the second branch test loop are respectively provided with the heat exchanger.
5. The water filter element performance testing system of claim 1, wherein the test loop assembly further comprises:
the output ends of the first branch test loop and the second branch test loop are connected to the second main test loop;
the input end and the output end of the third test loop are both connected with the second main test loop;
the purification filter is arranged on the third test loop;
and the check valve is arranged on the third test loop and is positioned on one side of the outlet end of the purification filter.
6. The water filter element performance testing system of claim 1, further comprising:
the test circuit assembly comprises a test liquid container, an input end of the test circuit assembly is connected with an outlet end of the test liquid container, and an output end of the test circuit assembly is connected with an inlet end of the test liquid container.
7. The water filter element performance testing system of claim 6, wherein at least two of the pump bodies include at least a first pump body and a second pump body, the testing system further comprising:
a first liquid return pipe;
a third three-way valve having a first end, a second end, and a third end; the first end of the third three-way valve is connected with the output end of the first pump body, the second end of the third three-way valve is connected with the output end of the second pump body, the third end of the third three-way valve is connected with the input end of the first liquid return pipe, and the output end of the first liquid return pipe extends to a position below the liquid level of the test liquid in the test liquid container.
8. The water filter element performance testing system of claim 6, further comprising:
the input end of the liquid discharge pipe extends below the liquid level of the test liquid in the test liquid container, and the output end of the liquid discharge pipe is used for discharging the test liquid;
and the liquid discharge pump is connected with the liquid discharge pipe.
9. The water filter element performance testing system of claim 6, further comprising:
a contaminated liquid container;
the stirrer is arranged in the polluted liquid container;
and the contamination injection pump is arranged between the test liquid container and the contamination liquid container and is used for injecting the contamination liquid in the contamination liquid container into the test liquid container to form the test liquid.
10. The water filter element performance testing system of claim 9, further comprising:
the input end of the second liquid return pipe is connected with the outlet end of the polluted liquid container, and the output end of the second liquid return pipe extends below the liquid level of the polluted liquid in the polluted liquid container;
and the circulating pump is arranged on the second liquid return pipe.
11. The water filter element performance testing system of claim 9, further comprising:
and the heaters are respectively arranged on the test liquid container and the polluted liquid container and are respectively used for heating the test liquid in the test liquid container and the polluted liquid in the polluted liquid container.
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| TWM261606U (en) * | 2004-09-06 | 2005-04-11 | You-Jung Huang | Flow regulator |
| KR101367155B1 (en) * | 2012-01-09 | 2014-02-26 | 두산중공업 주식회사 | Measuring apparatus for membrane fouling index |
| CN103090912A (en) * | 2013-02-22 | 2013-05-08 | 昆山鸿福泰环保科技有限公司 | Filter element detecting device |
| GB2515533A (en) * | 2013-06-27 | 2014-12-31 | Vetco Gray Controls Ltd | Monitoring a hydraulic fluid filter |
| CN203534679U (en) * | 2013-11-04 | 2014-04-09 | 郑州光力科技股份有限公司 | Correction system of orifice plate flow meter |
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| CN209980802U (en) * | 2019-05-29 | 2020-01-21 | 普瑞奇科技（北京）股份有限公司 | Nuclear island water filter high temperature resistance testing device |
| CN110847287A (en) * | 2019-11-25 | 2020-02-28 | 山东科源供排水设备工程有限公司 | Small and medium water supply pump station and use method thereof |
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