Device and Method for Injecting Acetone Tracer in PLIF Test of Real Gas Turbine

Abstract

The present disclosure provides a device and method for injecting acetone tracer in a real gas turbine PLIF test. The device includes: a pressure vessel storage tank, a distribution cylinder, an intelligent regulating valve group, an acetone intelligent feeding pump group, a sensor module, and a PLC control module. The intelligent regulating valve group is used to regulate the flow rates of heating steam, acetone steam, carrier gas, mixed gas, condensate water, and liquid discharge and sewage discharge. The total flow rate of heating steam is remotely controlled and divided into two paths to indirectly heat the security vaporizer and the mixed gas storage tank respectively; the acetone steam generated by the security vaporizer is transported to the mixed gas storage tank by controlling the flow rate of acetone steam; then the carrier gas is transported to the mixed gas storage tank for uniform mixing by controlling the flow rate of the carrier gas; finally, the mixed gas required for the test is transported to the combustion chamber by controlling the flow rate of the mixed gas. All the above real-time flow rate information is controlled and displayed by the PLC control module.

Description

Technical Field

[0001] The present disclosure belongs to the fields of combustion and laser spectroscopy application technology, and particularly relates to a device and method for injecting acetone tracer in a PLIF test of a real gas turbine. Background Art

[0002] Combustion in a gas turbine combustion chamber involves a very complex process, which involves the coupling of various physical and chemical reaction processes. Moreover, the quality of combustion will directly affect the performance of the engine, mainly reflected in two aspects: combustion efficiency and engine pollutant emissions. And the mixing effect of fuel and oxidant in the combustion chamber before ignition is the most important factor in combustion.

[0003] Planar Laser Induced Fluorescence (PLIF) technology, as a non-contact optical measurement technology, is one of the most commonly used and mature technologies in measuring gas-gas mixing processes and flame structures. Acetone, with advantages such as high saturated vapor pressure, convenient injection, slightly toxic, and high fluorescence intensity, is often used as a tracer in the study of gas-gas mixing characteristics. In the process of implementing the present disclosure, it is found that the previous Acetone-PLIF technology has the following technical defects:

[0004] (1) The acetone generator for PLIF experiments has a small size and generates a small amount of acetone vapor for the indoor laboratory environment;

[0005] (2) The acetone vapor for PLIF experiments can only be quantitatively proportioned to a fixed mole fraction of acetone vapor;

[0006] (3) For the liquid acetone used in PLIF experiments, the manual injection method is often adopted, and acetone vapor is obtained through an electric tracing tape, which has certain safety hazards and does not consider the recovery problem. Summary of the Invention

[0007] In view of the above problems, the present disclosure can provide a device and method for injecting acetone tracer in a PLIF test of a real gas turbine, in order to at least partially solve the above technical problems.

[0008] In order to solve the above technical problems, the present disclosure provides the following technical solutions:

[0009] A device for injecting acetone tracer in a PLIF test of a real gas turbine, comprising:

[0010] The pressure vessel storage tank includes a liquid acetone storage tank, a safety vaporizer, and a mixed gas storage tank. Among them, the liquid acetone storage tank is used to store liquid acetone; the safety vaporizer is used to indirectly heat the liquid acetone from the liquid acetone storage tank through heating steam to generate acetone vapor; the mixed gas storage tank is used to mix the acetone vapor with the carrier gas to obtain a mixed gas with a specified molar fraction and store the mixed gas. The mixed gas storage tank has a mixed gas supply port for communicating with the gas turbine combustion chamber.

[0011] The steam distribution cylinder is used to divide the heating steam into two paths to provide heating steam for indirect heating of the safety vaporizer and the mixed gas storage tank respectively.

[0012] The intelligent regulating valve group includes an acetone vapor intelligent regulating valve group for remote control of acetone vapor to automatically supply acetone vapor to the mixed gas tank; a heating steam intelligent regulating valve group arranged between the steam distribution cylinder and the safety vaporizer and the mixed gas storage tank for remote control of heating steam to automatically supply indirect heating steam to the safety vaporizer and the mixed gas storage tank; a carrier gas intelligent regulating valve group for remote control of the carrier gas to automatically supply the carrier gas to the mixed gas storage tank; and a mixed gas intelligent regulating valve group arranged between the mixed gas storage tank and the gas turbine combustion chamber for remote control of the mixed gas of the carrier gas and acetone vapor to automatically supply the mixed gas to the combustion chamber to simulate the fuel path.

[0013] The acetone intelligent feeding pump group is arranged between the liquid acetone storage tank and the safety vaporizer and is used to control the supply amount of liquid acetone injected into the liquid acetone storage tank and the flow rate injected into the safety vaporizer.

[0014] The sensor module is arranged on the pressure vessel storage tank and is used to obtain one or more of the temperature, flow rate, or pressure information of the pressure vessel storage tank; and

[0015] The PLC control module is used to remotely control the operation of each part in the acetone tracer injection device in the real gas turbine PLIF test, and issue and store alarm information and its corresponding response instructions.

[0016] In one embodiment, the above device further includes: an acetone detection module;

[0017] The acetone detection module includes a laser, a prism, a high reflector, a diaphragm, a lens combination unit, and a gas turbine combustion chamber connected in sequence; and

[0018] A camera located above the gas turbine combustion chamber.

[0019] In one embodiment, the above device further includes: a steam-water separator;

[0020] The steam separator is arranged between the security vaporizer and the mixed gas storage tank, and is used to separate the liquid components in the acetone vapor output by the security vaporizer.

[0021] In one embodiment, the above device further includes: an intelligent explosion-proof module, wherein the intelligent explosion-proof module includes a self-closing intelligent explosion-proof module and a on-site explosion-proof intelligent module;

[0022] The self-closing intelligent explosion-proof module is arranged between the acetone intelligent feeding pump group and the security vaporizer, and is used to prevent the acetone vapor generated in the security vaporizer from flowing back;

[0023] The on-site explosion-proof intelligent module is arranged on the pressure vessel storage tank, and is used to provide remote control software to intelligently adjust the working operation state of the pressure vessel storage tank according to a pre-set program.

[0024] In one embodiment, the above device further includes: a sewage and drainage outlet, a drainage and sewage valve group, and an intelligent steam trap group;

[0025] The sewage and drainage outlet is connected to the pressure vessel storage tank, and is used to discharge and recycle the waste liquid in the pressure vessel storage tank;

[0026] The drainage and sewage valve group is multiple and is respectively connected to the sewage and drainage outlet. The drainage and sewage valve group is used to control the drainage and sewage of the pressure vessel storage tank; and

[0027] The intelligent steam trap group arranged between the mixed gas storage tank and the condensate recovery port is used to remotely control the discharge of heating steam and the recovery of condensate formed after the steam does work. Among them, the condensate recovery port is used to recover the condensate in the security vaporizer and the mixed gas storage tank.

[0028] In one embodiment, a liquid level display remote transmission module is arranged on the outer side of the tube bundle of the liquid acetone storage tank, and is used to provide data information of the liquid acetone in the liquid acetone storage tank;

[0029] Among them, the data information of the liquid acetone includes the liquid level and the volume fraction.

[0030] The present disclosure also provides a method for filling acetone tracer in a real gas turbine PLIF test, including: using the device in the above embodiment;

[0031] Install the liquid acetone tank, the security vaporizer and the mixed gas storage tank near the gas turbine combustion chamber in sequence, and check them using the PLC control module;

[0032] Start the acetone intelligent feeding pump group using the PLC control module, fill the liquid acetone into the liquid acetone storage tank, and control the data information of the liquid acetone in the liquid acetone storage tank and the flow rate of the acetone intelligent feeding pump group;

[0033] The PLC control module divides the heating steam in the distribution header into two paths to indirectly heat the security vaporizer and the mixed gas storage tank respectively, converting the liquid acetone transported to the security vaporizer into acetone vapor and indirectly heating the acetone vapor transported to the mixed gas storage tank;

[0034] The acetone vapor transported to the mixed gas storage tank is mixed with the carrier gas injected into the mixed gas storage tank through the carrier gas filling port, and is injected into the nozzle of the gas turbine combustion chamber through the mixed gas supply port to test the acetone mixed vapor in the test area of the combustion chamber; and

[0035] The sensor module is used to obtain the real-time liquid level, temperature, flow rate and pressure in the liquid acetone tank, the security vaporizer and the mixed gas storage tank. The PLC control module issues alarm messages and instructions based on the real-time information obtained by the sensor module, and stores the alarm messages and instructions.

[0036] In another embodiment, testing the acetone mixed vapor in the test area of the combustion chamber includes:

[0037] Turn on the laser to output a laser beam, and successively shape the output laser beam into a sheet light source through a prism, a high reflector, a diaphragm and a lens combination unit, and vertically incident it into the area to be measured in the gas turbine combustion chamber;

[0038] Install a filter in front of the camera lens, place the camera in a direction perpendicular to the area to be measured, set the camera parameters, and take pictures of the area to be measured.

[0039] In another embodiment, the PLC control module issues an alarm based on the information obtained by the sensor module, including at least one of the following situations:

[0040] When the real-time liquid level is lower than the preset liquid level, where the preset liquid level is 10% of the volume of the liquid acetone storage tank;

[0041] When the real-time temperature of the heating steam is lower than the preset temperature, where the preset temperature of the heating steam is 180 °C;

[0042] When the real-time pressure of the heating steam is higher than the preset pressure, where the preset pressure of the heating steam is 2 MPa; and

[0043] When the real-time mole fraction of the acetone mixed vapor is lower than the preset mole fraction.

[0044] In another embodiment, the PLC control module issues instructions based on the information obtained by the sensor module, including:

[0045] When the real-time liquid level shows a downward trend and the real-time liquid level is lower than the preset liquid level, the PLC control module issues an instruction to add liquid acetone;

[0046] When the real-time temperature of the heating steam shows a downward trend and the real-time flow rate of the heating steam is lower than the preset flow rate, the PLC control module issues an instruction to increase the flow rate of the heating steam;

[0047] When the real-time pressure of the heating steam shows an upward trend and the real-time temperature of the heating steam is higher than the preset temperature, the PLC control module issues an instruction to decrease the flow rate of the heating steam; and

[0048] When the real-time mole fraction of the acetone mixed steam shows a downward trend and the real-time temperature of the heating steam is lower than 180 °C of the preset temperature, the PLC control module issues an instruction to increase the flow rate of the heating steam.

[0049] Based on the above technical solutions, a device and method for injecting acetone tracer in a real gas turbine PLIF test provided by the present disclosure has at least one of the following beneficial effects:

[0050] (1) In the embodiment of the present disclosure, liquid acetone is stored in a liquid acetone tank, and the liquid acetone is injected into a security vaporizer by an acetone intelligent feeding pump group. The security vaporizer is indirectly heated by heating steam to obtain acetone vapor; after being treated by a water separator, pure acetone vapor is obtained. The acetone vapor and the carrier gas are fully mixed through a mixed gas storage tank, which can ensure that the mole fraction is evenly mixed at each position in the mixed gas storage tank. By using an acetone vapor intelligent regulating valve group to control the flow rate of acetone vapor entering the mixed gas storage tank and controlling the flow rate of the carrier gas through a carrier gas intelligent regulating valve group, real-time adjustment can be realized according to the change of working conditions, solving the problem that in each experimental working condition in the past, it was necessary to re-prepare a fixed acetone mole fraction mixed gas that could only be used once, greatly shortening the test process. In addition, by using a water-sealed liquid discharge tank and a multi-stroke cooling separator to recover acetone according to the different vapor pressures of acetone waste gas, and all displays and controls are through the PLC, through intelligent remote control, truly realizing unattended operation in the test workshop, solving the safety risk problem caused by manual operation in previous experiments.

[0051] (2) In the embodiment of the present disclosure, according to the real gas turbine test working condition, the fuel path is simulated with a carrier gas, and acetone is added as a tracer. When the flow rate of the mixed gas ≥ 200 L / mmin and 13% of the gas production capacity is reserved, it can meet the working conditions of continuous testing for 4 hours, solving the problem that it was difficult to apply trace acetone vapor to real gas turbine tests in the indoor laboratory environment in the past. Description of the Drawings

[0052] Figure 1 is a schematic diagram of a device for injecting acetone tracer in a real gas turbine PLIF test in an embodiment of the present disclosure.

[0053]

Description of the Reference Numerals

[0054] 1 - Liquid acetone storage tank, 2 - Security vaporizer, 3 - Mixed gas storage tank, 4 - Intelligent steam trap group, 5 - Acetone intelligent feeding pump group, 6 - Self - closing intelligent explosion - proof module, 7 - Steam - water separator, 8 - Carrier gas intelligent regulating valve group, 9 - Acetone vapor intelligent regulating valve group, 10 - Heating steam intelligent regulating valve group, 11 - Mixed gas intelligent regulating valve group, 12 - Liquid level display remote transmission module, 13 - On - site explosion - proof intelligent control module, 14 - Drain and blowdown valve group, 15 - Steam header, 16 - Heating steam intelligent regulating main valve group, 17 - Drain and blowdown port, 18 - Liquid acetone filling port, 19 - Heating steam filling port, 20 - Carrier gas filling port, 21 - Mixed gas filling port, 22 - Condensate recovery port, 23 - Laser, 24 - Prism, 25 - High - reflection mirror, 26 - Diaphragm, 27 - Lens combination unit, 28 - Gas turbine combustion chamber, 29 - Camera Detailed implementation mode

[0055] To make the purpose, technical solutions and advantages of the present disclosure clearer and more understandable, the following further elaborates on the present disclosure in detail with reference to specific embodiments and the accompanying drawings.

[0056] In the prior - art acetone - PLIF test, the volume of the acetone generator is small, and the amount of acetone vapor generated is too little to be applied to actual gas turbine tests. Moreover, currently, only acetone vapor with a fixed quantitative ratio can be obtained, which cannot be changed according to the test conditions and does not meet the actual application scenarios; in addition, the generated acetone vapor cannot be effectively recovered.

[0057] Therefore, the present disclosure provides a device and method for injecting acetone tracers in a real gas turbine PLIF test. By building a test platform for mixing a set of indirectly heated large - flow acetone vapor generators with carrier gas, and by regulating the operation of each intelligent regulating valve group, acetone intelligent feeding pump group, and heating steam in the acetone tracer injection device, a gas that meets the requirements of the acetone - PLIF measurement gas - gas mixing test can be obtained, which can solve the problem that existing devices are difficult to apply to actual gas turbine test conditions.

[0058] Figure 1 It is a schematic diagram of a device for injecting acetone tracers in a real gas turbine PLIF test in an embodiment of the present disclosure.

[0059] As Figure 1 shown, a device for injecting acetone tracers in a real gas turbine PLIF test according to the present disclosure includes: a pressure vessel storage tank, an intelligent regulating valve group, an acetone intelligent feeding pump group, an intelligent explosion - proof device, a steam - water separator, a steam header, a sensor module, and a PLC control module.

[0060] According to an embodiment of the present disclosure, the pressure vessel storage tank includes a liquid acetone storage tank 1, a safety vaporizer 2, and a mixed gas storage tank 3.

[0061] The liquid acetone storage tank 1 is connected to the liquid acetone filling port 18, and the liquid acetone filling port 18 fills the liquid acetone into the liquid acetone storage tank 1 and stores the liquid acetone in the liquid acetone storage tank 1. The liquid acetone storage tank 1 includes a main tank body and corresponding instrument valves. A liquid level display remote transmission module 12 and an on-site explosion-proof intelligent control module 13 are also provided on the outside of the tube bundle of the liquid acetone storage tank 1, wherein the liquid level display remote transmission module 12 is used to remotely transmit and display the liquid level information and volume fraction related data of acetone on-site for real-time analysis and display; the on-site explosion-proof intelligent control module 13 is used to provide remote control software, which can intelligently adjust the working state of the liquid acetone storage tank 1 according to a pre-set program, so that it is always in an ideal working state.

[0062] The security vaporizer 2 includes a main tank body and corresponding instrument valves and information collection, display, and remote transmission units, etc., which are used to indirectly heat the liquid acetone from the liquid acetone storage tank 1 by heating steam to generate acetone vapor, collect and remotely transmit and display the temperature, pressure, flow rate and other related information of the acetone vapor. An on-site explosion-proof intelligent control module 13 is also provided on the outside of the tube bundle of the security vaporizer 2, which is used to provide remote control software, and can intelligently adjust the working state of the security vaporizer 2 according to a pre-set program, so that it is always in an ideal working state.

[0063] The mixed gas storage tank 3 mainly includes a tank body and corresponding instrument valves and information collection, display, and remote transmission units, etc., which are used to mix acetone vapor with a carrier gas to obtain a mixed gas of a specified molar fraction and store the mixed gas. One end of the mixed gas storage tank 3 is connected to a carrier gas filling port 20, and the carrier gas filling port 20 is used to provide carrier gas to the mixed gas storage tank 3, wherein the carrier gas can be high-purity nitrogen with a purity greater than 99.99%; it also has a mixed gas supply port 21, which is used to communicate with the gas turbine combustion chamber 28 to transport the acetone mixed vapor to the test area of ​​the combustion chamber for detection. An on-site explosion-proof intelligent control module 13 is arranged outside the tube bundle of the mixed gas storage tank 3, which is used to provide remote control software, and can intelligently adjust the working state of the mixed gas storage tank 3 according to a pre-set program, so that it is always in an ideal working state. A group of static mixing units and turbulent flow units are also arranged inside the mixed gas storage tank 3 to fully contact and mix the carrier gas and acetone vapor, so that the molar fraction of the acetone mixed vapor at each position in the mixed gas storage tank is the same.

[0064] According to an embodiment of the present disclosure, the heating steam injection port 19 is connected to the steam distribution cylinder 15 for providing indirectly heated heating steam to the steam distribution cylinder 15. The steam distribution cylinder 15 is used to divide the heating steam into two paths to respectively provide heating steam for indirect heating of the security vaporizer 2 and the mixed gas storage tank 3. The steam distribution cylinder mainly includes a cylinder body and corresponding instrument valves, etc. When the steam distribution cylinder 15 indirectly heats the outer side of the tube bundle of the security vaporizer 2, the liquid acetone in the security vaporizer 3 can be converted into acetone vapor; when indirectly heating the outer side of the tube bundle of the mixed gas storage tank 3, it can indirectly heat the acetone vapor in the mixed gas storage tank 3 to prevent the condensation and liquefaction of the acetone vapor after mixing with the carrier gas.

[0065] According to an embodiment of the present disclosure, the intelligent regulating valve group includes: a carrier gas intelligent regulating valve group 8, an acetone vapor intelligent regulating valve group 9, a heating steam intelligent regulating valve group 10, and a mixed gas intelligent regulating valve group 11.

[0066] The carrier gas intelligent regulating valve group 8 mainly includes a ratio-adjusting special electric regulating valve and supporting valves, instruments, sensing units, and pipe fittings, etc., for the remote control of the carrier gas, automatically supplying the carrier gas to the mixed gas storage tank 3, and regulating the flow rate and pressure of the carrier gas in real time.

[0067] The acetone vapor intelligent regulating valve group 9 mainly includes a ratio-adjusting special electric regulating valve and supporting valves, instruments, sensing units, and pipe fittings, etc., for the remote control of the acetone vapor, automatically supplying acetone vapor to the mixed gas tank 3, and regulating the flow rate, temperature, and pressure of the acetone vapor in real time. It is arranged between the steam-water separator 7 and the mixed gas storage tank 3.

[0068] The heating steam intelligent regulating valve group 10 is arranged between the steam distribution cylinder 15 and the security vaporizer 2 and the mixed gas storage tank 3, and mainly includes a ratio-adjusting steam electric regulating valve and supporting valves, instruments, sensing units, and pipe fittings, etc. It is used for the remote control of the heating steam, automatically supplying indirectly heated steam to the security vaporizer 2 and the mixed gas storage tank 3, and regulating the flow rate, temperature, and pressure of the heating steam in real time.

[0069] The mixed gas intelligent regulating valve group 11 is arranged between the mixed gas storage tank 3 and the gas turbine combustion chamber 28, and mainly includes a ratio-adjusting special electric regulating valve and supporting valves, instruments, sensing units, and pipe fittings, etc. It is used for the remote control of the mixed gas of the carrier gas and the acetone vapor, automatically supplying the mixed gas to the combustion chamber 28 to simulate the fuel path, and regulating the flow rate and pressure of the mixed gas in real time.

[0070] According to an embodiment of the present disclosure, an acetone intelligent feeding pump set 5 is arranged between a liquid acetone storage tank 1 and a security vaporizer 2, and is used to control the supply amount of liquid acetone injected into the liquid acetone storage tank 1 and the flow rate injected into the security vaporizer 2. The acetone intelligent feeding pump set 5 mainly includes a ratio-adjustable variable-frequency feeding pump, a special-purpose electric control valve and supporting valves, instruments, a sensing unit, pipe fittings, etc. A conversion device is arranged in the acetone intelligent feeding pump set to realize the rapid supply of acetone and the unloading of acetone.

[0071] According to an embodiment of the present disclosure, a sensor module is arranged on a pressure vessel storage tank and is used to obtain one or more of the temperature, flow rate or pressure information of the pressure vessel storage tank; wherein, the pressure vessel storage tank includes a liquid acetone storage tank, a security vaporizer and a mixed gas storage tank.

[0072] According to an embodiment of the present disclosure, a PLC control module is used to remotely control the operation of each part in the acetone tracer injection device in the real gas turbine PLIF test, and issue and store alarm information and corresponding response instructions. The connection method of the PLC control module in this device is RS-485 communication connection, and the MODBUS protocol is executed.

[0073] In an embodiment of the present disclosure, liquid acetone is stored in a liquid acetone tank, and the liquid acetone is injected into the security vaporizer by an acetone intelligent feeding pump set, and acetone vapor is obtained by indirectly heating the security vaporizer with heating steam. The acetone vapor is fully mixed with the carrier gas through a mixing unit and a turbulence unit built in the mixed gas storage tank, so as to ensure that the mole fractions are evenly mixed at each position in the mixed gas storage tank. By using an acetone vapor intelligent control valve group to control the flow rate of acetone vapor entering the mixed gas storage tank and controlling the flow rate of the carrier gas through a carrier gas intelligent control valve group, real-time adjustment can be realized according to the change of working conditions, solving the problem that in each experimental working condition, it is necessary to re-prepare a fixed acetone mole fraction mixed gas that can only be used once, and greatly shortening the test process. In addition, by using a water-sealed liquid discharge tank and a multi-stroke cooling separator, acetone is recovered according to the different vapor pressures of acetone waste gas, and all displays and controls are through the PLC. Through intelligent remote control, unmanned operation in the test plant is truly realized, solving the safety risk problem caused by manual operation in previous experiments.

[0074] According to an embodiment of the present disclosure, the injection device for the acetone tracer in the real gas turbine PLIF test further includes an acetone detection module for detecting acetone mixed vapor.

[0075] According to an embodiment of the present disclosure, the acetone detection module includes a laser 23, a prism 24, a high-reflection mirror 25, a diaphragm 26, a lens combination unit 27, and a gas turbine combustion chamber 28 connected in sequence; and a camera 29 located above the gas turbine combustion chamber 28.

[0076] The laser 23 is a Nd:YAG pulsed laser, which is used to generate the excitation light of 266 nm that can excite acetone.

[0077] The prism 24 is a Pellin - Broca prism, which is used to reflect the laser of other wavelengths.

[0078] The highly reflective mirror 25 is used to reflect the 266 nm excitation light to the area to be measured.

[0079] The aperture 26 is used to shape and filter the excitation light beam emitted by the laser 23.

[0080] The lens combination unit 27 is used to expand the emitted incident light spot into a sheet - shaped light source with a certain height.

[0081] The gas turbine combustion chamber 28 is used to provide the area to be measured in the experiment.

[0082] The camera 29 is an ICCD camera, which is used to collect the fluorescence signal emitted by acetone molecules.

[0083] According to an embodiment of the present disclosure, the device of the present disclosure further includes a steam - water separator 7, which is arranged between the security vaporizer 2 and the mixed gas storage tank 3, and is used to separate the liquid components in the acetone vapor output by the security vaporizer 2 to obtain relatively pure acetone vapor.

[0084] According to an embodiment of the present disclosure, the device of the present disclosure further includes: an intelligent explosion - proof module, wherein the intelligent explosion - proof module includes a self - closing intelligent explosion - proof module 6 and a field explosion - proof intelligent control module 13.

[0085] The self - closing intelligent explosion - proof module 6 is arranged between the acetone intelligent feeding pump group 5 and the security vaporizer 2, and is used to prevent the backflow of the acetone vapor and carrier gas generated in the security vaporizer 2, which may cause an explosion. If an abnormality is found during the test operation, it can automatically cut off the acetone pipeline and alarm, and at the same time cut off the main power supply of the device to prevent the escape of acetone molecules.

[0086] The field explosion - proof intelligent control module 13 is respectively arranged on the outer side of the tube bundles of the liquid acetone storage tank 1, the security vaporizer 2 and the mixed gas storage tank 3, and is used to provide a remote control software, and intelligently adjust the working operation states of the liquid acetone storage tank 1, the security vaporizer 2 or the mixed gas storage tank 3 according to the pre - set program, so that each of them is always in an ideal working state.

[0087] According to an embodiment of the present disclosure, the device of the present disclosure further includes: a sewage and drainage port 17, a drainage and sewage valve group 14 and an intelligent steam trap group 4.

[0088] The waste liquid discharge port 17 is connected to the liquid acetone storage tank 1, the security vaporizer 2, and the mixed gas storage tank 3, and is used to discharge and recover the waste liquid in the liquid acetone storage tank 1, the security vaporizer 2, and the mixed gas storage tank 3.

[0089] There are multiple liquid discharge and waste discharge valve groups 14, which are respectively connected to the waste liquid discharge port 17. The liquid discharge and waste discharge valve groups 14 are used to control the liquid discharge and waste discharge of the liquid acetone storage tank 1, the security vaporizer 2, and the mixed gas storage tank 3. They uniformly transmit the discharged liquid to the waste liquid discharge port 17 for unified recovery and treatment, avoiding environmental pollution, and ensuring that the escape rate of acetone is 0 during liquid discharge. The liquid discharge and waste discharge valve group 14 mainly includes a ratio-adjusting special electric control valve and supporting valves, instruments, sensing units, and pipe fittings, etc.

[0090] The intelligent steam trap group 4 is arranged between the mixed gas storage tank 3 and the condensate recovery port 22, and is used to remotely control the discharge of heating steam and the recovery of condensate formed after the steam does work. Among them, the condensate recovery port 22 is used to recover the condensate in the security vaporizer 2 and the mixed gas storage tank 3. The intelligent steam trap group 4 mainly includes an electric bell float steam trap and supporting valves, instruments, sensing units, and pipe fittings, etc.

[0091] According to an embodiment of the present disclosure, the device further includes a power unit for supplying power to the device, such as the intelligent control valve group, pressure vessel storage tank, acetone intelligent feeding pump group, intelligent explosion-proof device, liquid level display remote transmission module, PLC control module, etc.

[0092] According to an embodiment of the present disclosure, the installation positions of the pressure vessel storage tank, intelligent control valve group, intelligent regulating pump group, intelligent explosion-proof device, steam-water separator, steam header, sensor device, and PLC control module can be selected according to the actual situation of the test area in the test workshop, but the connection relationship between each part cannot be changed arbitrarily.

[0093] The present disclosure also provides a method for filling acetone tracer in a real gas turbine PLIF test, and the specific implementation method of the present disclosure will be described in detail in combination with Figure 1 the device in.

[0094] According to an embodiment of the present disclosure, the liquid acetone tank 1, the security vaporizer 2, and the mixed gas storage tank 3 are sequentially installed near the gas turbine combustion chamber 28, and are inspected using the PLC control module.

[0095] Specifically, the liquid acetone tank 1, the security vaporizer 2, and the mixed gas storage tank 3 are arranged in accordance with Figure 1They are sequentially installed near the gas turbine combustor 28 in the middle position, leaving a safe distance between the devices. The intelligent regulating valve groups, pipe fittings, thermal insulation materials, communication and sensing units, etc. of the liquid acetone tank 1, the security vaporizer 2, and the mixed gas storage tank 3 are installed on it. Then, remote control is carried out in the central control room using the PLC control module, and each part of the device is inspected, such as observing the liquid level of liquid acetone in the liquid acetone storage tank 1 and the temperature and pressure display of the liquid acetone storage tank; observing the temperature and pressure display of the security vaporizer 2; observing the temperature and pressure display of the mixed gas storage tank 3, and then inspecting the flow input control and real-time feedback of each intelligent regulating valve group in the device. Finally, under the condition of a relatively small gas flow, check whether there is any air leakage or liquid leakage at the joints of each pipe fitting. After all inspections are completed, close all intelligent regulating valves and intelligent feeding pump groups.

[0096] According to an embodiment of the present disclosure, the acetone intelligent feeding pump group is started using the PLC control module, liquid acetone is filled into the liquid acetone storage tank, and the data information of the liquid acetone in the liquid acetone storage tank and the flow rate of the acetone intelligent feeding pump group are controlled.

[0097] Specifically, the liquid acetone storage tank 1 is connected to the liquid acetone filling port 18 and the liquid acetone intelligent feeding pump group 5. The acetone intelligent feeding pump group 5 is started using the PLC control module, and the prepared liquid acetone is filled into the liquid acetone storage tank 1. At the same time, pay attention to the liquid level display of the liquid acetone storage tank 1 at any time. Wait until about 30L of liquid acetone is added to meet the requirement of continuous testing for more than ten hours. After the liquid acetone filling is completed, disconnect the liquid acetone filling port 18 from the acetone intelligent feeding pump group 5, and control the cut-off of the regulating valve through the PLC control module. During this operation, pay attention to the temperature, pressure of the liquid acetone storage tank 1 and the flow rate of the acetone intelligent feeding pump group 5 at any time.

[0098] According to an embodiment of the present disclosure, the heating steam in the distribution cylinder 15 is divided into two paths through the PLC control module, and is used to indirectly heat the security vaporizer 2 and the mixed gas storage tank 3 respectively, convert the liquid acetone transported to the security vaporizer 2 into acetone vapor, and indirectly heat the acetone vapor transported to the mixed gas storage tank 3.

[0099] Specifically, connect the heating steam filling port 19 to the steam distribution cylinder 15, fill the heated saturated steam into the steam distribution cylinder, and introduce the heated saturated steam into the outer side of the tube bundle of the safety vaporizer 2 through the intelligent regulating valve group 10 of the heating steam to indirectly heat the liquid acetone in the safety vaporizer 2 to obtain acetone vapor. During this operation, always pay attention to the pressure, temperature, and flow rate of the heating steam in the steam distribution cylinder 15 to ensure that the qualified heating steam can completely vaporize the liquid acetone in the safety vaporizer 2 to form acetone vapor. At the same time, it is also necessary to always pay attention to the liquid level, temperature, pressure of the liquid acetone in the liquid acetone storage tank 1 and the flow rate of the acetone intelligent feeding pump group 5 to prevent the mole fraction of the acetone mixed vapor after subsequent mixing from being too small due to too low a liquid level or insufficient flow rate in the liquid acetone storage tank 1; and always pay attention to the pressure and temperature of the safety vaporizer 2 to prevent safety accidents caused by too high a pressure.

[0100] According to an embodiment of the present disclosure, the acetone vapor transported to the mixed gas storage tank 3 is mixed with the carrier gas injected into the mixed gas storage tank 3 through the carrier gas filling port 20, and is injected into the nozzle of the gas turbine combustion chamber 28 through the mixed gas supply port 21 to test the acetone mixed vapor in the test area of the combustion chamber.

[0101] According to an embodiment of the present disclosure, use the sensor module to obtain the real-time liquid level, temperature, flow rate, and pressure in the liquid acetone tank 1, the safety vaporizer 2, and the mixed gas storage tank 3. The PLC control module issues alarm information and instructions based on the real-time information obtained by the sensor module, and stores the alarm information and instructions.

[0102] Specifically, the acetone vapor formed in the safety vaporizer 2 can separate the liquid molecules mixed in the acetone vapor, such as liquid acetone, through the steam-water separator 7 to obtain acetone vapor with higher purity. Then, open the intelligent regulating valve group 9 of the acetone vapor, inject the acetone vapor processed by the steam-water separator 7 into the mixed gas storage tank 3, and at the same time open the intelligent regulating valve group 8 of the carrier gas connected to the mixed gas storage tank 3 from the carrier gas filling port 20 to inject the carrier gas into the mixed gas storage tank 3. Then, use the PLC control module to fix the flow rates of the acetone intelligent feeding pump group 5 and the intelligent regulating valve group 10 of the heating steam, and open another intelligent regulating valve group 10 of the heating steam that is branched from the steam distribution cylinder 15 and connected to the outer side of the tube bundle of the mixed gas storage tank 3. A part of the heating steam in the steam distribution cylinder 15 is introduced into the outer side of the tube bundle of the mixed gas storage tank 3 to indirectly heat the acetone vapor in the mixed gas storage tank 3 to prevent it from condensing and liquefying after mixing with the carrier gas.

[0103] During the operation, always pay attention to the pressure, temperature and flow rate of the heating steam to ensure that the acetone mixed steam in the mixed gas storage tank 3 will not condense and liquefy with qualified heating steam; always pay attention to the liquid level, temperature, pressure of the liquid acetone storage tank 1 and the flow rate of the acetone intelligent feeding pump group 5 to prevent the liquid level of the liquid acetone storage tank 1 from being too low and the flow rate from being insufficient, resulting in a too small mole fraction in the follow-up; always pay attention to the pressure and temperature of the security vaporizer 2 to prevent condensation and liquefaction due to the decrease in the temperature of the security vaporizer tube bundle; always pay attention to the pressure, temperature and stability of the mixed gas storage tank 3 to prevent condensation and liquefaction of the acetone mixed steam and uneven mixing due to the decrease in temperature; and always pay attention to the carrier gas flow rate to prevent the mole fraction of the generated mixed gas from being too low due to an increase in the flow rate.

[0104] According to an embodiment of the present disclosure, the PLC control module issues alarms and instructions based on the information obtained by the sensor module, including at least one of the following situations:

[0105] In the case where the real-time liquid level is lower than the preset liquid level, where the preset liquid level is 10% of the volume of the liquid acetone storage tank. When the liquid level of the liquid acetone shows a downward trend and the real-time liquid level is lower than the preset liquid level, the PLC control module issues an instruction to add liquid acetone, and then the liquid acetone filling port starts to inject new liquid acetone into the liquid acetone storage tank.

[0106] In the case where the real-time temperature is lower than the preset temperature, where the preset temperature is 180 °C. When the real-time temperature of the heating steam shows a downward trend and the real-time flow rate of the heating steam is lower than the preset flow rate, the PLC control module issues an instruction to increase the flow rate of the heating steam. With the temperature of the heating steam, the liquid acetone can be converted into acetone steam, and the acetone steam will not be condensed and liquefied after mixing with the carrier gas.

[0107] In the case where the real-time pressure of the heating steam is higher than the preset pressure, where the preset pressure of the heating steam is 2 MPa. When the real-time pressure of the heating steam shows an upward trend and the real-time temperature of the heating steam is higher than the preset temperature, the PLC control module issues an instruction to reduce the flow rate of the heating steam to prevent the security vaporizer and the mixed gas storage tank from operating overloaded.

[0108] In the case where the real-time mole fraction of the acetone mixed steam is lower than the preset mole fraction. Specifically, when the real-time mole fraction of the acetone mixed steam shows a downward trend and the real-time temperature of the heating steam is lower than 180 °C of the preset temperature, the PLC control module issues an instruction to increase the flow rate of the heating steam to fully convert the liquid acetone into acetone steam to maintain the acetone mixed steam with the required mole fraction.

[0109] In addition, when the liquid level in the liquid acetone storage tank exceeds the preset value, the PLC control module will issue an instruction to reduce the injection of liquid acetone; when the temperature and pressure in the pressure vessel storage tank exceed the temperature and pressure that its own material can withstand, the PLC control module will also issue an instruction to reduce the heating steam flow rate.

[0110] According to an embodiment of the present disclosure, a method for injecting an acetone tracer in a real gas turbine PLIF test, testing acetone mixed steam in a test area of a combustion chamber includes: turning on a laser 23 to output a laser beam, and successively shaping the output laser beam into a sheet light source through a prism 24, a high reflection mirror 25, a diaphragm 26, and a lens combination unit 27, and vertically incident into a region to be measured in a gas turbine combustion chamber 28; installing a filter in front of the lens of a camera 29, placing the camera 29 in a direction perpendicular to the region to be measured in the gas turbine combustion chamber 28, setting the camera parameters, and taking pictures of the region to be measured.

[0111] Taking the acetone mixed steam with a molar fraction of 10% required by the test conditions as an example, a further explanation of the method for injecting an acetone tracer in a real gas turbine PLIF test according to the present disclosure is given. However, it should be noted that the embodiments of the present disclosure are only for illustration and should not limit the present disclosure.

[0112] First, use the PLC control module to control the acetone intelligent feeding pump group 5 to make the liquid acetone flow rate supplied from the liquid acetone storage tank 1 to the security vaporizer 2 be 0.05 L / min. At the same time, connect the heating steam filling port 19 with the heating steam intelligent regulating main valve group 16. The PLC control module controls the heating steam intelligent regulating main valve group 16 to output heating steam with a pressure of 1.0 MPa and a temperature of 180 °C, and passes the heating steam into the outer side of the tube bundle of the security vaporizer 2 through a distribution cylinder 15 and a heating steam intelligent regulating valve group 10 to indirectly heat the liquid acetone in the security vaporizer 2 to obtain acetone steam.

[0113] Next, control the acetone steam intelligent regulating valve group 9 through the PLC control module to make the acetone steam in the security vaporizer be supplied to the mixed gas storage tank 3 with a flow rate of 16.45 L / min after being processed by a steam-water separator 7. Then, control the carrier gas intelligent regulating valve group 8 through the PLC control module to make the carrier gas flow rate supplied from the carrier gas filling port 20 to the mixed gas storage tank 3 be 148.05 L / min. Finally, start a group of built-in static mixing units and a group of turbulent flow units in the mixed gas storage tank 3 through the PLC control module, so that the carrier gas and acetone steam entering the mixed gas storage tank 3 are in full contact and evenly mixed, ensuring that the molar fraction of the mixed gas at each spatial position in the mixed gas storage tank is the same.

[0114] Secondly, fix the flow rates of the acetone intelligent feeding pump group 5, the heating steam intelligent regulating main valve group 16, the heating steam intelligent regulating valve group 10, the acetone vapor intelligent regulating valve group 9, and the carrier gas intelligent regulating valve group 8. Open the mixed gas intelligent regulating valve group 11 through the PLC control module, control the gas flow rate of the acetone mixed vapor to be 164.50 L / min, and the output pressure to be 1.1 MPa and introduce it into the nozzle of the gas turbine combustion chamber, and obtain acetone mixed vapor with a molar fraction of 10% in the test area.

[0115] Secondly, turn on the Nd:YAG laser 23 to output the 266 nm excitation light required for the quadrupling frequency experiment, and shape the emitted laser beam into a sheet light source with a certain height through the Pellin-Broca prism 24, the high reflection mirror 25, the aperture 26, and the lens combination unit 27, and vertically incident it on the area to be measured 28 of the gas turbine combustion chamber. Then, place the ICCD camera 29 in another direction perpendicular to the area to be measured 28, and install a filter in front of the camera lens to filter out stray light of non-fluorescent signals, and set the gate width of the ICCD camera 29, the gain of the image intensifier, the delay time, and the number of pictures taken. During the operation, pay attention to the energy of the laser 23 at any time, as well as whether the lenses in the optical path system are shifted and whether the laser sheet is focused on the center of the test area 28. At the same time, pay attention to the gain of the ICCD camera 29 at any time to prevent damage to the camera, and pay attention to whether the image of the test area 28 is most clearly focused on the ICCD camera 29 at any time.

[0116] After the experiment is completed, open the drain and sewage discharge valve group 14, and control it through the PLC control module to recycle the waste liquid and waste gas acetone from the liquid acetone storage tank 1, the security vaporizer 2, and the mixed gas storage tank 3 to the drain and sewage discharge port 17 for acetone recovery. The discharged liquid is uniformly recovered and treated to avoid affecting the environment, and ensure that the escape rate of acetone is 0 while draining. At the same time, control the intelligent steam trap group 4 through the PLC control module, and condense the heating steam in the security vaporizer 2 and the mixed gas storage tank 3 and flow it into the condensate recovery port 22, or it can also be automatically added to the makeup water tank for recycling during the experiment.

[0117] In the embodiments of the present disclosure, according to the actual gas turbine test conditions, nitrogen is used as the carrier gas to simulate the fuel path, and acetone is added as a tracer. When the gas flow rate of the acetone mixed vapor ≥ 200 L / min and 13% of the gas production capacity is reserved, it can meet the continuous test for 4 hours, solving the problem that it is difficult to apply trace acetone vapor to the actual gas turbine test in the indoor laboratory environment in the past.

[0118] The specific embodiments described above further elaborate on the purpose, technical solutions, and beneficial effects of the present disclosure. It should be understood that the above are only specific embodiments of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present disclosure shall be included within the protection scope of the present disclosure.

Claims

1. A device for injecting acetone tracer in a real gas turbine PLIF test, characterized in that, it includes: A pressure vessel storage tank, including a liquid acetone storage tank, a safety vaporizer, and a mixed gas storage tank; wherein, the liquid acetone storage tank is used to store liquid acetone; the safety vaporizer is used to indirectly heat the liquid acetone from the liquid acetone storage tank through heating steam to generate acetone vapor; the mixed gas storage tank is used to mix the acetone vapor with the carrier gas to obtain a mixed gas with a specified molar fraction and store the mixed gas, and the mixed gas storage tank has a mixed gas supply port for communicating with the gas turbine combustion chamber; A distribution cylinder, used to divide the heating steam into two paths to provide heating steam for indirect heating of the safety vaporizer and the mixed gas storage tank respectively; An intelligent regulating valve group, including an acetone vapor intelligent regulating valve group for remote control of acetone vapor to automatically supply acetone vapor to the mixed gas tank; a heating steam intelligent regulating valve group arranged between the distribution cylinder and the safety vaporizer and the mixed gas storage tank for remote control of heating steam to automatically supply indirect heating steam to the safety vaporizer and the mixed gas storage tank; a carrier gas intelligent regulating valve group for remote control of the carrier gas to automatically supply the carrier gas to the mixed gas storage tank; and a mixed gas intelligent regulating valve group arranged between the mixed gas storage tank and the gas turbine combustion chamber for remote control of the mixed gas of the carrier gas and acetone vapor to automatically supply the mixed gas to the combustion chamber simulation fuel path; An acetone intelligent feeding pump group, arranged between the liquid acetone storage tank and the safety vaporizer, used to control the supply amount of liquid acetone injected into the liquid acetone storage tank and the flow rate injected into the safety vaporizer; A sensor module, arranged on the pressure vessel storage tank, used to obtain one or more of the temperature, flow rate or pressure information of the pressure vessel storage tank; and A PLC control module, used to remotely control the operation of each part in the device for injecting acetone tracer in the real gas turbine PLIF test, and issue, store alarm information and its corresponding response instructions; The device further includes: an intelligent explosion-proof module, wherein the intelligent explosion-proof module includes a self-closing intelligent explosion-proof module and a field explosion-proof intelligent control module; The self-closing intelligent explosion-proof module is arranged between the acetone intelligent feeding pump group and the safety vaporizer to prevent the acetone vapor generated in the safety vaporizer from flowing back; The field explosion-proof intelligent control module is arranged on the pressure vessel storage tank, used to provide remote control software to intelligently adjust the working operation state of the pressure vessel storage tank according to a pre-set program.

2. The device according to claim 1, characterized in that, it further includes: An acetone detection module; The acetone detection module includes a laser, a prism, a high reflector, a diaphragm, a lens combination unit, and a gas turbine combustion chamber connected in sequence; and A camera located above the gas turbine combustion chamber.

3. The device according to any one of claims 1-2, characterized in that, the device further includes: a steam-water separator; The steam separator is arranged between the security vaporizer and the mixed gas storage tank, and is used for separating the liquid components in the acetone vapor output by the security vaporizer.

4. The device according to claim 3, characterized in that it further comprises: a sewage and drain outlet, a drain and sewage valve group, and an intelligent steam trap group; The sewage and drain outlet is connected to the pressure vessel storage tank and is used for discharging and recycling the waste liquid in the pressure vessel storage tank; The drain and sewage valve group is multiple and is respectively connected to the sewage and drain outlet, and the drain and sewage valve group is used for controlling the drainage and sewage of the pressure vessel storage tank; and The intelligent steam trap group arranged between the mixed gas storage tank and the condensate recovery port is used for remotely controlling the discharge of heating steam and the recovery of condensate formed after the steam does work, wherein the condensate recovery port is used for recovering the condensate in the security vaporizer and the mixed gas storage tank.

5. The device according to claim 1, characterized in that a liquid level display remote transmission module is arranged outside the tube bundle of the liquid acetone storage tank and is used for providing data information of the liquid acetone in the liquid acetone storage tank; wherein, the data information of the liquid acetone includes the liquid level and the volume fraction.

6. A method for filling acetone tracer in a real gas turbine PLIF test, characterized in that it includes using the device according to any one of claims 1-5; The liquid acetone tank, the security vaporizer and the mixed gas storage tank are sequentially installed near the gas turbine combustion chamber and are inspected by using a PLC control module; The acetone intelligent feeding pump group is started by using the PLC control module, and liquid acetone is filled into the liquid acetone storage tank, and the data information of the liquid acetone in the liquid acetone storage tank and the flow rate of the acetone intelligent feeding pump group are controlled; The heating steam in the distribution cylinder is divided into two paths by the PLC control module, and is used for indirectly heating the security vaporizer and the mixed gas storage tank respectively, converting the liquid acetone transported to the security vaporizer into acetone vapor, and indirectly heating the acetone vapor transported to the mixed gas storage tank; The acetone vapor transported to the mixed gas storage tank is mixed with the carrier gas injected into the mixed gas storage tank through the carrier gas filling port, and is injected into the gas turbine combustion chamber nozzle through the mixed gas supply port, and the acetone mixed vapor is tested in the test area of the combustion chamber; and The real-time liquid level, temperature, flow rate and pressure in the liquid acetone tank, the security vaporizer and the mixed gas storage tank are obtained by using the sensor module, and the PLC control module issues alarm information and instructions according to the real-time information obtained by the sensor module, and stores the alarm information and instructions.

7. The method according to claim 6, characterized in that testing the acetone mixed vapor in the test area of the combustion chamber includes: Turn on the laser to output a laser beam, and successively shape the output laser beam into a sheet light source through a prism, a high reflector, a diaphragm and a lens combination unit, and vertically irradiate the area to be measured in the gas turbine combustion chamber; A filter is installed in front of the camera lens, and the camera is placed in the direction perpendicular to the area to be measured, and the camera parameters are set to take pictures of the area to be measured.

8. The method according to claim 6, wherein, the PLC control module issues an alarm according to the information obtained by the sensor module, including at least one of the following situations: when the real-time liquid level is lower than the preset liquid level, wherein the preset liquid level is 10% of the volume of the liquid acetone storage tank; when the real-time temperature of the heating steam is lower than the preset temperature, wherein the preset temperature of the heating steam is 180 °C; when the real-time pressure of the heating steam is higher than the preset pressure, wherein the preset pressure of the heating steam is 2 MPa; and when the real-time mole fraction of the acetone mixed steam is lower than the preset mole fraction.

9. The method according to claim 6, wherein, the PLC control module issues an instruction according to the information obtained by the sensor module, including: when the real-time liquid level shows a downward trend and the real-time liquid level is lower than the preset liquid level, the PLC control module issues an instruction to add liquid acetone; when the real-time temperature of the heating steam shows a downward trend and the real-time flow rate of the heating steam is lower than the preset flow rate, the PLC control module issues an instruction to increase the flow rate of the heating steam; when the real-time pressure of the heating steam shows an upward trend and the real-time temperature of the heating steam is higher than the preset temperature, the PLC control module issues an instruction to reduce the flow rate of the heating steam; when the real-time mole fraction of the acetone mixed steam shows a downward trend and the real-time temperature of the heating steam is lower than 180 °C of the preset temperature, the PLC control module issues an instruction to increase the flow rate of the heating steam.

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