CN109100127B - High-temperature erosive wear test device and method for gas-liquid-solid multiphase flow of angle type hydraulic control valve - Google Patents
High-temperature erosive wear test device and method for gas-liquid-solid multiphase flow of angle type hydraulic control valve Download PDFInfo
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- CN109100127B CN109100127B CN201810915246.XA CN201810915246A CN109100127B CN 109100127 B CN109100127 B CN 109100127B CN 201810915246 A CN201810915246 A CN 201810915246A CN 109100127 B CN109100127 B CN 109100127B
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- 239000007787 solid Substances 0.000 title claims abstract description 168
- 238000012360 testing method Methods 0.000 title claims abstract description 76
- 230000003628 erosive effect Effects 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 131
- 238000002156 mixing Methods 0.000 claims abstract description 77
- 238000000926 separation method Methods 0.000 claims abstract description 54
- 239000012071 phase Substances 0.000 claims abstract description 43
- 238000011084 recovery Methods 0.000 claims abstract description 42
- 230000005514 two-phase flow Effects 0.000 claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 18
- 238000005299 abrasion Methods 0.000 claims abstract description 16
- 239000007791 liquid phase Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 12
- 239000007790 solid phase Substances 0.000 claims abstract description 12
- 238000011160 research Methods 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims description 86
- 238000004062 sedimentation Methods 0.000 claims description 17
- 230000001276 controlling effect Effects 0.000 claims description 11
- 230000007246 mechanism Effects 0.000 claims description 9
- 239000002893 slag Substances 0.000 claims description 9
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- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims description 2
- 238000010998 test method Methods 0.000 abstract description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
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- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
Abstract
The invention discloses a high-temperature erosion abrasion test device and a test method for a gas-liquid-solid multiphase flow of an angle type hydraulic control valve, which are characterized by comprising a high-temperature gas supply system, a high-temperature gas supply system and a high-temperature gas control system, wherein the gas supply system is used for supplying a gas source of the whole test device, heating compressed air and controlling the gas supply quantity; the system is used for providing an oil source for the whole test device, heating the oil and controlling an oil supply quantity Wen Gongyou system; the mixed solid particle feeding and mixing system is used for feeding particles, mixing the particles with high-temperature compressed air and mixing high-temperature gas-solid two-phase flow and high-temperature oil; the system is used for developing the research of high-temperature gas-liquid-solid multiphase flow erosion abrasion test of the tested hydraulic control valve, simulating the movement process of the valve core, and realizing a hydraulic control valve test system for dynamic test and a gas-liquid-solid separation and recovery system for separating and recovering gas phase, liquid phase and solid phase; the temperature, flow and opening degree are continuously adjustable.
Description
Technical Field
The invention relates to a high-temperature erosion wear test device for a hydraulic control valve, in particular to a high-temperature erosion wear test device for a gas-liquid-solid multiphase flow of an angle type hydraulic control valve and a test method thereof.
Background
The angle type hydraulic control valve is widely applied to the flow industries such as petroleum refining, coal processing, chemical industry and the like. In the operation process of the hydraulic control valve, solid particles from the outside and the inside of the equipment system can enter oil, so that the oil can be polluted, erosion and abrasion can be caused, a series of problems such as damage, performance reduction and service life shortening of the valve internal parts of the hydraulic control valve are caused, and the stability of the whole equipment system is further influenced. Particularly, under the working condition of high temperature, the fluid control valve for delivering the gas-liquid two-phase flow has more complex flow field in the valve. At this time, if solid particles exist in the oil, a gas-liquid-solid three-phase flow is formed, and erosion and abrasion are further increased. Meanwhile, in order to effectively adjust the fluid flow of the outlet of the hydraulic control valve, the opening of the hydraulic control valve can be adjusted in real time in the operation process, and the opening of the valve can further influence the erosion and abrasion area and strength in the valve. Therefore, the gas-liquid-solid erosion rule of the hydraulic control valve under the high temperature condition is still to be further researched and explored.
The existing gas-liquid-solid high-temperature erosive wear test device mainly has the following defects: 1) The object of erosive wear is mainly to test blocks with different shapes and specifications, and test devices designed and developed for the whole valve are fewer; 2) The equipment of the high-temperature erosive wear test device has high energy consumption and needs to be provided with high-power heating and cooling equipment; 3) The erosion and abrasion test can be carried out only for a test block with a fixed impact angle or a valve with a fixed opening, and the opening of the valve can not be continuously adjusted in the test process; therefore, the gas-liquid-solid three-phase flow high-temperature erosive wear rule in the dynamic change process of the valve opening is difficult to test, and great difficulty is caused to building a corresponding calculation model and a prediction method.
Disclosure of Invention
The invention aims to solve the technical problem of providing a high-temperature erosive wear test device and a test method for a gas-liquid-solid multiphase flow of an angle type hydraulic control valve with continuously adjustable temperature, flow and opening
The technical scheme adopted for solving the technical problems is as follows: the high-temperature erosive wear test device for the gas-liquid-solid multiphase flow of the angle-type hydraulic control valve comprises a high-temperature gas supply system, a high Wen Gongyou system, a solid particle feeding and mixing system, a hydraulic control valve test system and a gas-liquid-solid separation and recovery system;
the high-temperature air supply system is used for providing an air source of the whole test device, heating compressed air and controlling the air supply amount, and is connected with the solid particle feeding and mixing system;
the high Wen Gongyou system is used for providing an oil source of the whole test device, heating the oil and controlling oil supply, and the high Wen Gongyou system is connected with the solid particle feeding and mixing system;
the solid particle feeding and mixing system is used for feeding particles, mixing the particles with high-temperature compressed air and mixing high-temperature gas-solid two-phase flow and high-temperature oil, and is connected with the pilot operated valve test system;
the hydraulic control valve test system is used for developing a high-temperature gas-liquid-solid multiphase flow erosion abrasion test research of the tested hydraulic control valve and simulating the movement process of the valve core to realize dynamic test, and is connected with the gas-liquid-solid separation and recovery system;
the gas-liquid-solid separation and recovery system is used for separating and recovering gas phase, liquid phase and solid phase.
The high-temperature air supply system comprises an air compressor, an air inlet valve, a high-temperature air storage tank, a filter, an air heater, a one-way valve and a large-caliber air flow control valve, wherein the air compressor, the air inlet valve, the high-temperature air storage tank and the large-caliber air flow control valve are sequentially connected, and the filter is sequentially connected with the bottom air inlet of the high-temperature air storage tank through the air heater and the one-way valve.
The high-temperature oil supply system comprises an oil tank, a variable pump, a liquid flowmeter, a liquid heater (19), a liquid flow control valve and a stop valve; the oil tank, the variable pump, the liquid flowmeter, the liquid heater and the liquid flow control valve are sequentially connected, and the liquid heater is connected with an upper inlet of the oil tank through a stop valve.
The solid particle feeding and mixing system comprises a small-caliber gas flow control valve, a medium-caliber gas flow control valve, a particle feeding device, a ball valve, a particle mass flowmeter, a multi-stage mixing chamber, a single-stage mixing chamber, a gas-solid two-phase flow control valve and a gas-liquid-solid three-phase flow control valve; the large-caliber gas flow control valve is connected with the inlet of the particle feeding device through the small-caliber gas flow control valve, the large-caliber gas flow control valve (7) is connected with the middle inlet of the multistage mixing chamber through the medium-caliber gas flow control valve, the bottom outlet of the particle feeding device is sequentially connected with the upper inlet of the multistage mixing chamber through the ball valve and the particle mass flowmeter, and the bottom outlet of the multistage mixing chamber is sequentially connected with the gas-liquid-solid three-phase flow control valve through the gas-solid two-phase flow control valve and the single-stage mixing chamber.
The liquid control valve test system comprises a tested angle type liquid control valve, and the gas-liquid-solid separation and recovery system comprises a gas-liquid-solid separation tank, a sedimentation tank, a cyclone separator, a high-temperature centrifugal pump, a slag locking valve, a switching valve and a particle recovery device; the gas-liquid-solid three-phase flow control valve is connected with the inlet end of the tested angle type liquid control valve through an inlet flange, the outlet end of the tested angle type liquid control valve is connected with the gas-liquid-solid separation tank through an outlet flange, a valve electric stroke control mechanism for adjusting the opening degree of the tested angle type liquid control valve is arranged on the tested angle type liquid control valve, a top gas phase outlet of the gas-liquid-solid separation tank is connected with the high-temperature gas storage tank through the cyclone separator, a bottom material outlet of the cyclone separator is connected with the particle recovery device, a liquid phase outlet of the gas-liquid-solid separation tank is connected with the oil tank through the sedimentation tank and the high-temperature centrifugal pump, a bottom residue outlet of the sedimentation tank is connected with the particle recovery device through the residue locking valve, and a bottom solid phase outlet of the gas-liquid-solid separation tank is connected with the particle recovery device through the switch valve.
The method for carrying out the high-temperature erosion abrasion test of the gas-liquid-solid multiphase flow of the angle type hydraulic control valve by utilizing the device comprises the following steps:
(1) In the high-temperature air supply system, compressed air generated by an air compressor sequentially enters a high-temperature air storage tank and a filter through an air inlet valve; before the test, the large-caliber gas flow control valve is closed, so that compressed air at the outlet of the filter sequentially passes through the one-way valve and the air heater and returns to the high-temperature gas storage tank, and the compressed air circularly flows in a closed loop to realize preheating; when the numerical value displayed by a thermometer arranged in the high-temperature air storage tank reaches a specified temperature, the large-caliber gas flow control valve 7 is opened, and preheated compressed air enters a solid particle feeding and mixing system;
(2) In a high Wen Gongyou system, oil in an oil tank is conveyed through a variable pump, is heated in a liquid heater through a liquid flowmeter, before a test, a liquid flow control valve is closed, a stop valve is opened, and the oil circularly flows in a closed loop formed by connecting the oil tank, the variable pump, the liquid flowmeter, the liquid heater and the stop valve, so that preheating is realized; when the numerical value displayed by a thermometer in the oil tank reaches the designated temperature, a liquid flow control valve is opened, a stop valve is closed, and oil at the outlet of the liquid flow control valve enters a single-stage mixing chamber;
(3) In the solid particle feeding and mixing system, after preheated compressed air is heated to a specified temperature, a small-caliber flow control valve is opened, a ball valve is closed, high-temperature compressed air enters a particle feeding device to heat particles, and the heating time is controlled to be 30-60 min; after heating, the ball valve, the medium caliber gas flow control valve, the gas-solid two-phase flow control valve, the liquid flow control valve and the gas-liquid-solid three-phase flow control valve are required to be opened simultaneously; the high-temperature compressed air at the outlet of the ball valve drives particles to flow through the particle mass flowmeter to enter the multistage mixing chamber; the flow rate of high-temperature compressed air entering the particle feeding device can be adjusted by adjusting the opening of the small-caliber flow control valve, so that the feeding rate of particles is adjusted; the feeding rate of the particles can be monitored in real time through a particle mass flowmeter; high-temperature gas at the outlet of the medium-caliber gas flow control valve enters a multistage mixing chamber and is mixed with heated particles; the high Wen Youye of the outlet of the liquid flow control valve enters a single-stage mixing chamber and is mixed with the high-temperature gas-solid two-phase flow of the outlet of the multi-stage mixing chamber to form a high-temperature gas-liquid-solid three-phase flow; the high-temperature gas-liquid-solid three-phase flow at the outlet of the gas-liquid-solid three-phase flow control valve enters a liquid control valve test system;
(4) In the pilot operated valve test system, gas-liquid-solid three-phase flow enters a tested angle pilot operated valve to develop high-temperature gas-liquid-solid multiphase flow erosion abrasion test research, simulate the movement process of a valve core and realize dynamic test; the opening of the tested angle type hydraulic control valve is regulated and controlled through the valve electric stroke control mechanism;
(5) In the gas-liquid-solid separation and recovery system, high-temperature gas-liquid-solid three-phase at the outlet of the tested angle type liquid control valve flows through an outlet flange to enter a gas-liquid-solid separation tank; the gas phase outlet of the gas-liquid-solid separation tank separates out high-temperature gas with a small amount of solid particles, and then enters a cyclone separator for gas-solid separation; high-temperature gas at the outlet of the cyclone separator returns to a high-temperature gas storage tank, and solid particles enter a particle recovery device; the liquid phase outlet of the gas-liquid-solid separation tank separates out the high Wen Youye with a small amount of solid particles, and the high Wen Youye returns to the oil tank through the sedimentation tank and the high-temperature centrifugal pump; separating solid particles in the oil in a sedimentation tank; after the slag locking valve is opened, solid particles at the bottom of the sedimentation tank enter the particle recovery device, and the solid phase outlet of the gas-liquid-solid separation tank 27 directly enters the particle recovery device through the switch valve.
The high-temperature air storage tank, the particle feeding device and the oil tank are respectively provided with a thermometer for monitoring the temperature of materials in the high-temperature air storage tank, the particle feeding device and the oil tank.
Compared with the prior art, the invention has the advantages that: the invention relates to a high-temperature erosion abrasion test device and a test method for a gas-liquid-solid multiphase flow of an angle type liquid control valve, wherein in a high-temperature gas supply system, a large-caliber gas flow control valve can be closed, so that compressed air flows in a high-temperature gas storage tank, a filter and an air heater to realize self-circulation heating; in a high Wen Gongyou system, a variable pump and a stop valve can be opened, and a liquid flow control valve is closed, so that oil flows in an oil tank, the variable pump, a liquid flowmeter, a liquid heater and the stop valve, and self-circulation heating is realized; in the solid particle feeding and mixing system, particles in a particle feeding device are preheated by opening a small-caliber gas flow control valve and closing a ball valve;
in the high-temperature air supply system, the power of the air heater and the circulation time of compressed air can be adjusted to control the gas temperature of the outlet of the large-caliber gas flow control valve; in a high Wen Gongyou system, the power of the liquid heater and the circulation time of the oil can be adjusted to control the temperature of the oil at the outlet of the liquid flow control valve; in the solid particle feeding and mixing system, the temperature of the particles can be controlled through the heating time of the high-temperature compressed gas of the particle feeding device;
controlling the flow rate of compressed air entering the multistage mixing chamber by adjusting the large-caliber gas flow control valve and the medium-caliber gas flow control valve; controlling the mass flow of particles entering the multistage mixing chamber by adjusting the large-caliber gas flow control valve, the small-caliber gas flow control valve and the ball valve; controlling the flow of oil entering the single-stage mixing chamber by adjusting the variable pump and the liquid flow control valve;
and the opening of the tested angle type hydraulic control valve is regulated and controlled through the valve electric stroke control mechanism.
Drawings
FIG. 1 is a schematic diagram of a high-temperature erosion abrasion test device for a gas-liquid-solid multiphase flow of an angle type hydraulic control valve;
FIG. 2 is a schematic diagram of a pilot operated valve test system according to the present invention; the figures are each labeled as follows: 1. an air compressor, 2, an air inlet valve, 3, a high-temperature air storage tank, 4, a filter, 5, an air heater, 6, a one-way valve, 7, a large-caliber gas flow control valve, 8, a small-caliber gas flow control valve, 9, a medium-caliber gas flow control valve, 10, a particle feeding device, 11, a ball valve, 12, a particle mass flowmeter, 13, a multistage mixing chamber, 14, a gas-solid two-phase flow control valve, 15, a single-stage mixing chamber, 16, an oil tank, 17, a variable pump, 18, a liquid flowmeter, 19, a liquid heater, 20, a liquid flow control valve, 21, a stop valve, 22, a gas-liquid-solid three-phase flow control valve, 23, an inlet flange, 24, a tested-angle type liquid control valve, 25, an outlet flange, 26, a valve electric stroke control mechanism, 27, a gas-liquid-solid separation tank, 28, a sedimentation tank, 29, a cyclone separator, 30, a high-temperature centrifugal pump, 31, a slag locking valve, 32, a switching valve, 33 and a particle recovery device.
Detailed Description
The invention is described in further detail below with reference to the embodiments of the drawings.
Detailed description of the preferred embodiments
The high-temperature erosion abrasion test device for the gas-liquid-solid multiphase flow of the angle type hydraulic control valve is shown in figure 1, and comprises a high-temperature gas supply system, a high Wen Gongyou system, a solid particle feeding and mixing system, a hydraulic control valve test system and a gas-liquid-solid separation and recovery system; the high-temperature air supply system is used for providing an air source of the whole test device and heating the compressed air and controlling the air supply amount, and is connected with the solid particle feeding and mixing system; the high-temperature oil supply system is used for providing an oil source of the whole test device and heating oil, and is also used for controlling the oil supply amount, and the high Wen Gongyou system is connected with the solid particle feeding and mixing system; the solid particle feeding and mixing system is used for feeding particles, mixing the particles with high-temperature compressed air and mixing high-temperature gas-solid two-phase flow and high-temperature oil, and is connected with the pilot operated valve test system; the hydraulic control valve test system is used for carrying out high-temperature gas-liquid-solid multiphase flow erosion abrasion test research of the tested hydraulic control valve and simulating the movement process of the valve core to realize dynamic test, and is connected with the gas-liquid-solid separation and recovery system; the gas-liquid-solid separation and recovery system is used for separating and recovering gas phase, liquid phase and solid phase.
In this specific embodiment, the high-temperature air supply system comprises an air compressor 1, an air inlet valve 2, a high-temperature air storage tank 3, a filter 4, an air heater 5, a one-way valve 6 and a large-caliber air flow control valve 7, wherein the air compressor 1, the air inlet valve 2, the high-temperature air storage tank 3 and the large-caliber air flow control valve 7 are sequentially connected, and the filter 4 is sequentially connected with the bottom air inlet of the high-temperature air storage tank 3 through the air heater 5 and the one-way valve 6.
In this particular embodiment, the high temperature oil supply system includes an oil tank 16, a variable displacement pump 17, a liquid flow meter 18, a liquid heater 19, a liquid flow control valve 20, and a shut-off valve 21; the tank 16, the variable pump 17, the liquid flow meter 18, the liquid heater 19, and the liquid flow control valve 20 are connected in this order, and the liquid heater 19 is connected to an upper inlet of the tank 16 through a shut-off valve 21.
In this particular embodiment, the solid particle feed and mixing system includes a small-bore gas flow control valve 8, a medium-bore gas flow control valve 9, a particle feed device 10, a ball valve 11, a particle mass flow meter 12, a multi-stage mixing chamber 13, a single-stage mixing chamber 15, a gas-solid two-phase flow control valve 14, and a gas-liquid-solid three-phase flow control valve 22; the large-caliber gas flow control valve 7 is connected with the inlet of the particle feeding device 10 through the small-caliber gas flow control valve 8, the large-caliber gas flow control valve 7 is connected with the middle inlet of the multistage mixing chamber 13 through the medium-caliber gas flow control valve 9, the bottom outlet of the particle feeding device 10 is connected with the upper inlet of the multistage mixing chamber 13 through the ball valve 11 and the particle mass flowmeter 12 in sequence, and the bottom outlet of the multistage mixing chamber 13 is connected with the gas-liquid-solid three-phase flow control valve 22 through the gas-solid two-phase flow control valve 14 and the single-stage mixing chamber 15 in sequence.
In this embodiment, as shown in fig. 2, the pilot operated valve test system includes a tested angle pilot operated valve 24, and the gas-liquid-solid separation and recovery system includes a gas-liquid-solid separation tank 27, a sedimentation tank 28, a cyclone 29, a high temperature centrifugal pump 30, a slag locking valve 31, an on-off valve 32, and a particle recovery device 33; the gas-liquid-solid three-phase flow control valve 22 is connected with the inlet end of the tested angle type liquid control valve 24 through an inlet flange 23, the outlet end of the tested angle type liquid control valve 24 is connected with the gas-liquid-solid separation tank 27 through an outlet flange 25, a valve electric stroke control mechanism 26 (commercially available as model DKJ-4100M) for adjusting the opening degree of the tested angle type liquid control valve 24 is arranged on the tested angle type liquid control valve 24, the top gas phase outlet of the gas-liquid-solid separation tank 27 is connected with the high-temperature gas storage tank 3 through a cyclone separator 29, the bottom material outlet of the cyclone separator 29 is connected with the particle recovery device 33, the liquid phase outlet of the gas-liquid-solid separation tank 27 is connected with the oil tank 16 through a sedimentation tank 28 and a high-temperature centrifugal pump 30, the bottom residue outlet of the sedimentation tank 28 is connected with the particle recovery device 33 through a residue locking valve 31, and the bottom solid phase outlet of the gas-liquid-solid separation tank 27 is connected with the particle recovery device 33 through a switch valve 32.
Second embodiment
The method for carrying out the high-temperature erosion wear test of the gas-liquid-solid multiphase flow of the angle type hydraulic control valve by using the device comprises the following steps as shown in fig. 1 and 2:
1. in the high-temperature air supply system, compressed air generated by an air compressor 1 sequentially enters a high-temperature air storage tank 3 and a filter 4 through an air inlet valve 2; before the test, the large-caliber gas flow control valve 7 is closed, so that compressed air at the outlet of the filter 4 sequentially passes through the one-way valve 6 and the air heater 5 and returns to the high-temperature gas storage tank 3 to circularly flow in a closed loop, and preheating is realized; when the numerical value displayed by a thermometer arranged in the high-temperature air storage tank 3 reaches a specified temperature, the large-caliber gas flow control valve 7 is opened, and preheated compressed air enters a solid particle feeding and mixing system;
which provides a source of air throughout the test apparatus and heats the compressed air at a high temperature air supply system, while controlling the amount of air supplied. All the devices are connected through stainless steel pipelines, heat preservation layers are covered outside the pipelines, and the nominal diameter of the pipelines is DN 50; the equipment and the pipeline are connected in a threaded or flange mode, and the size of the interface is 2 inches; the air compressor 1 has a power of 45 kW and a volumetric flow of 8 m 3 A/min; the volume of the high-temperature air storage tank 3 is 80 m 3 A thermometer is arranged in the inner part; the filter 4 had a filtration accuracy of 15 μm; the power of the air heater 5 is 50 kW; the flow control precision of the large-caliber gas flow control valve 7 is +/-5%;
2. in a high Wen Gongyou system, oil in an oil tank 16 is conveyed by a variable pump 17, is heated in a liquid heater 19 through a liquid flowmeter 18, before a test, a liquid flow control valve 20 is closed, a stop valve 21 is opened, and the oil circularly flows in a closed loop formed by connecting the oil tank 16, the variable pump 17, the liquid flowmeter 18, the liquid heater 19 and the stop valve 21 to realize preheating; when the value displayed by the thermometer in the oil tank 16 reaches the designated temperature, the liquid flow control valve 20 is opened, the stop valve 21 is closed, and the oil at the outlet of the liquid flow control valve 20 enters the single-stage mixing chamber 15;
wherein the high Wen Gongyou system provides a source of oil for the entire test apparatus and heats the oil while controlling the amount of oil supplied. All the devices are connected through stainless steel pipelines, heat preservation layers are covered outside the pipelines, and the nominal diameter of the pipelines is DN 25; the volume of the oil tank 16 is 50 m 3 A thermometer is arranged in the inner part; maximum displacement 270 cm of variable displacement pump 17 3 R, the maximum rotating speed is 2500 r/min, and the output power is 300 kW; the flow rate test range of the liquid flow meter 18 is 0.2 m 3 /h ~ 16.0 m 3 And/h, the flow test precision is 5%; the flow rate adjustment range of the liquid flow rate control valve 20 is 0-15.0 m 3 And/h, the flow regulation precision is 5%;
3. in a solid particle feeding and mixing system, after preheated compressed air is heated to a specified temperature (the temperature range is 0-90 ℃), a small-caliber flow control valve 8 is opened, a ball valve 11 is closed, high-temperature compressed air enters a particle feeding device 10 to heat particles, and the heating time is controlled to be 30-60 min; after heating, the ball valve 11, the medium caliber gas flow control valve 9, the gas-solid two-phase flow control valve 14, the liquid flow control valve 20 and the gas-liquid-solid three-phase flow control valve 22 are required to be opened simultaneously; the high-temperature compressed air at the outlet of the ball valve 11 drives particles to flow through the particle mass flowmeter 12 and enter the multistage mixing chamber 13; the flow rate of high-temperature compressed air entering the particle feeding device 10 can be adjusted by adjusting the opening of the small-caliber flow control valve 8, so that the feeding rate of particles is adjusted; the feed rate of the particles can be monitored in real time by the particle mass flow meter 12; the high-temperature gas at the outlet of the medium-caliber gas flow control valve 9 enters a multistage mixing chamber 13 and is mixed with the heated particles; the high Wen Youye of the outlet of the liquid flow control valve 20 enters the single-stage mixing chamber 15 and is mixed with the high-temperature gas-solid two-phase flow of the outlet of the multi-stage mixing chamber 13 to form a high-temperature gas-liquid-solid three-phase flow; the high-temperature gas-liquid-solid three-phase flow at the outlet of the gas-liquid-solid three-phase flow control valve 22 enters a liquid control valve test system; wherein the solid particle feeding and mixing system involves feeding of particles, mixing of particles with high temperature compressed air, toAnd mixing the high-temperature gas-solid two-phase flow and the high-temperature oil; the flow control range of the small-caliber gas flow control valve 8 is 0-5.0 m 3 And/h, the flow regulation precision is 2%; the flow control range of the medium caliber gas flow control valve 9 is 0-10.0 m 3 And/h, the flow regulation precision is 5%; the test range of the particle mass flowmeter 12 is 0.01 kg/s-0.1 kg/s; the mixing distance of the multistage mixing chamber 13 is 10 times of the nominal diameter (250 mm), the number of the partition plates is 4, and the interval between each partition plate is 50 mm; the mixing distance of the single-stage mixing chamber 15 is 5 times of the nominal diameter (120 mm), the number of the partition plates is 2, and the interval between each partition plate is 40 mm; the gas-solid two-phase flow control valve 14 and the gas-liquid-solid three-phase flow control valve 22 are both slide valves capable of preventing solid particles from blocking, and tungsten carbide wear-resistant coatings with the thickness of 5 mu m are sprayed on flow passages in the valves;
4. in the pilot operated valve test system, gas-liquid-solid three-phase flow enters the tested angle pilot operated valve 24 to develop high-temperature gas-liquid-solid multiphase flow erosion abrasion test research, simulate the movement process of a valve core and realize dynamic test; and the opening of the tested angle type hydraulic control valve 24 is regulated and controlled through the valve electric stroke control mechanism 26; the tested angle type hydraulic control valve 24 with different interface pipe diameters can be matched by replacing the inlet flange 23 and the outlet flange 25; the valve electric stroke control mechanism 26 adopts an electric or pneumatic driving mode to control the displacement precision to be not lower than 0.1 mm/s;
5. in the gas-liquid-solid separation and recovery system, the high-temperature gas-liquid-solid three-phase at the outlet of the tested angle type hydraulic control valve 24 flows through the outlet flange 25 to enter the gas-liquid-solid separation tank 27; the gas phase outlet of the gas-liquid-solid separation tank 27 separates out high-temperature gas with a small amount of solid particles, and then enters the cyclone separator 29 for gas-solid separation; the high-temperature gas at the outlet of the cyclone separator 29 returns to the high-temperature gas storage tank 3, and solid particles enter the particle recovery device 33; the liquid phase outlet of the gas-liquid-solid separation tank 27 separates out the high Wen Youye and the high Wen Youye carrying small amounts of solid particles, which are returned to the oil tank 16 via the settling tank 28 and the high temperature centrifugal pump 30; the solid particles in the oil are separated in a settling tank 28; after the slag locking valve 31 is opened (in the test process, the slag locking valve 31 is intermittently opened, the opening interval is 30min, and the opening time is 10 min each time), solid particles at the bottom of the sedimentation tank 28 enter the particle recovery device 33; the solid phase outlet of the gas-liquid-solid separation tank 27 directly enters the particle recovery device 33 through the on-off valve 32.
Wherein the gas-liquid-solid separation and recovery system is mainly used for separating and recovering gas phase, liquid phase and solid phase; the gas-liquid-solid separation tank 27 has a volume of 120 m 3 The gas-liquid separation efficiency is not lower than 90%, and the separation efficiency of solid particles from the gas-liquid phase is not lower than 80%; the nominal diameters of the gas phase outlet connecting pipelines of the gas-liquid-solid separation tank 27 are DN 50, the nominal diameters of the liquid phase outlet connecting pipelines are DN 25, and the nominal diameters of the solid phase outlet connecting pipelines are DN 10; the gas-solid separation efficiency of the cyclone 29 is not less than 95%; the volume of the settling tank 28 is 40 m 3 。
The above description is not intended to limit the invention, nor is the invention limited to the examples described above. Variations, modifications, additions, or substitutions will occur to those skilled in the art and are therefore within the spirit and scope of the invention.
Claims (2)
1. The utility model provides an angle formula liquid accuse valve gas-liquid solid multiphase flow high temperature erosive wear test device which characterized in that: the system comprises a high-temperature air supply system, a high Wen Gongyou system, a solid particle feeding and mixing system, a pilot operated valve test system and a gas-liquid-solid separation and recovery system;
the high-temperature air supply system is used for providing an air source of the whole test device, heating compressed air and controlling the air supply amount, and is connected with the solid particle feeding and mixing system; the high Wen Gongyou system is used for providing an oil source of the whole test device, heating the oil and controlling oil supply, and the high Wen Gongyou system is connected with the solid particle feeding and mixing system;
the solid particle feeding and mixing system is used for feeding particles, mixing the particles with high-temperature compressed air and mixing high-temperature gas-solid two-phase flow and high-temperature oil, and is connected with the pilot operated valve test system;
the hydraulic control valve test system is used for developing a high-temperature gas-liquid-solid multiphase flow erosion abrasion test research of the tested hydraulic control valve and simulating the movement process of the valve core to realize dynamic test, and is connected with the gas-liquid-solid separation and recovery system;
the gas-liquid-solid separation and recovery system is used for separating and recovering gas phase, liquid phase and solid phase;
the high-temperature air supply system comprises an air compressor, an air inlet valve, a high-temperature air storage tank, a filter, an air heater, a one-way valve and a large-caliber air flow control valve, wherein the air compressor, the air inlet valve, the high-temperature air storage tank and the large-caliber air flow control valve are sequentially connected, and the filter is sequentially connected with the bottom air inlet of the high-temperature air storage tank through the air heater and the one-way valve;
the high-temperature oil supply system comprises an oil tank, a variable pump, a liquid flowmeter, a liquid heater, a liquid flow control valve and a stop valve; the oil tank, the variable pump, the liquid flowmeter, the liquid heater and the liquid flow control valve are sequentially connected, and the liquid heater is connected with an upper inlet of the oil tank through a stop valve;
the solid particle feeding and mixing system comprises a small-caliber gas flow control valve, a medium-caliber gas flow control valve, a particle feeding device, a ball valve, a particle mass flowmeter, a multi-stage mixing chamber, a single-stage mixing chamber, a gas-solid two-phase flow control valve and a gas-liquid-solid three-phase flow control valve; the large-caliber gas flow control valve is connected with the inlet of the particle feeding device through the small-caliber gas flow control valve, the large-caliber gas flow control valve is connected with the middle inlet of the multistage mixing chamber through the medium-caliber gas flow control valve, the bottom outlet of the particle feeding device is connected with the upper inlet of the multistage mixing chamber through the ball valve and the particle mass flowmeter in sequence, and the bottom outlet of the multistage mixing chamber is connected with the gas-liquid-solid three-phase flow control valve through the gas-solid two-phase flow control valve and the single-stage mixing chamber in sequence;
the liquid control valve test system comprises a tested angle type liquid control valve, and the gas-liquid-solid separation and recovery system comprises a gas-liquid-solid separation tank, a sedimentation tank, a cyclone separator, a high-temperature centrifugal pump, a slag locking valve, a switching valve and a particle recovery device; the device is characterized in that the gas-liquid-solid three-phase flow control valve is connected with the inlet end of the tested angle type liquid control valve through an inlet flange, the outlet end of the tested angle type liquid control valve is connected with the gas-liquid-solid separation tank through an outlet flange, a valve electric stroke control mechanism for adjusting the opening degree of the tested angle type liquid control valve is arranged on the tested angle type liquid control valve, the top gas phase outlet of the gas-liquid-solid separation tank is connected with the high-temperature gas storage tank through the cyclone separator, the bottom material outlet of the cyclone separator is connected with the particle recovery device, the liquid phase outlet of the gas-liquid-solid separation tank is connected with the oil tank through the sedimentation tank and the high-temperature centrifugal pump, the bottom residue outlet of the sedimentation tank is connected with the particle recovery device through the slag locking valve, the bottom solid phase outlet of the gas-liquid-solid separation tank is connected with the particle recovery device through the switch valve, and the high-liquid-solid separation tank is provided with the particle recovery device, and the particle recovery device is provided with a temperature meter, and the particle recovery device is used for monitoring the temperature of the material in the gas storage tank.
2. A method for performing high-temperature erosion wear test of a gas-liquid-solid multiphase flow of an angle-type hydraulic control valve by using the device of claim 1, which is characterized by comprising the following steps:
(1) In the high-temperature air supply system, compressed air generated by an air compressor sequentially enters a high-temperature air storage tank and a filter through an air inlet valve; before the test, the large-caliber gas flow control valve is closed, so that compressed air at the outlet of the filter sequentially passes through the one-way valve and the air heater and returns to the high-temperature gas storage tank, and the compressed air circularly flows in a closed loop to realize preheating; when the numerical value displayed by a thermometer arranged in the high-temperature air storage tank reaches a specified temperature, a large-caliber gas flow control valve is opened, and preheated compressed air enters a solid particle feeding and mixing system;
(2) In a high Wen Gongyou system, oil in an oil tank is conveyed through a variable pump, is heated in a liquid heater through a liquid flowmeter, before a test, a liquid flow control valve is closed, a stop valve is opened, and the oil circularly flows in a closed loop formed by connecting the oil tank, the variable pump, the liquid flowmeter, the liquid heater and the stop valve, so that preheating is realized; when the numerical value displayed by a thermometer in the oil tank reaches the designated temperature, a liquid flow control valve is opened, a stop valve is closed, and oil at the outlet of the liquid flow control valve enters a single-stage mixing chamber;
(3) In the solid particle feeding and mixing system, after preheated compressed air is heated to a specified temperature, a small-caliber flow control valve is opened, a ball valve is closed, high-temperature compressed air enters a particle feeding device to heat particles, and the heating time is controlled to be 30-60 min; after heating, the ball valve, the medium caliber gas flow control valve, the gas-solid two-phase flow control valve, the liquid flow control valve and the gas-liquid-solid three-phase flow control valve are required to be opened simultaneously; the high-temperature compressed air at the outlet of the ball valve drives particles to flow through the particle mass flowmeter to enter the multistage mixing chamber; the flow rate of high-temperature compressed air entering the particle feeding device can be adjusted by adjusting the opening of the small-caliber flow control valve, so that the feeding rate of particles is adjusted; the feeding rate of the particles can be monitored in real time through a particle mass flowmeter; high-temperature gas at the outlet of the medium-caliber gas flow control valve enters a multistage mixing chamber and is mixed with heated particles; the high Wen Youye of the outlet of the liquid flow control valve enters a single-stage mixing chamber and is mixed with the high-temperature gas-solid two-phase flow of the outlet of the multi-stage mixing chamber to form a high-temperature gas-liquid-solid three-phase flow; the high-temperature gas-liquid-solid three-phase flow at the outlet of the gas-liquid-solid three-phase flow control valve enters a liquid control valve test system;
(4) In the pilot operated valve test system, gas-liquid-solid three-phase flow enters a tested angle pilot operated valve to develop high-temperature gas-liquid-solid multiphase flow erosion abrasion test research, simulate the movement process of a valve core and realize dynamic test; the opening of the tested angle type hydraulic control valve is regulated and controlled through the valve electric stroke control mechanism;
(5) In the gas-liquid-solid separation and recovery system, high-temperature gas-liquid-solid three-phase at the outlet of the tested angle type liquid control valve flows through an outlet flange to enter a gas-liquid-solid separation tank; the gas phase outlet of the gas-liquid-solid separation tank separates out high-temperature gas with a small amount of solid particles, and then enters a cyclone separator for gas-solid separation; high-temperature gas at the outlet of the cyclone separator returns to a high-temperature gas storage tank, and solid particles enter a particle recovery device; the liquid phase outlet of the gas-liquid-solid separation tank separates out the high Wen Youye with a small amount of solid particles, and the high Wen Youye returns to the oil tank through the sedimentation tank and the high-temperature centrifugal pump; separating solid particles in the oil in a sedimentation tank; after the slag locking valve is opened, solid particles at the bottom of the sedimentation tank enter the particle recovery device, and the solid phase outlet of the gas-liquid-solid separation tank directly enters the particle recovery device through the switch valve.
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