CN114279709A - Supercritical kerosene heating device and heating method for supersonic test bed - Google Patents
Supercritical kerosene heating device and heating method for supersonic test bed Download PDFInfo
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- CN114279709A CN114279709A CN202111625906.9A CN202111625906A CN114279709A CN 114279709 A CN114279709 A CN 114279709A CN 202111625906 A CN202111625906 A CN 202111625906A CN 114279709 A CN114279709 A CN 114279709A
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 201
- 239000003350 kerosene Substances 0.000 title claims abstract description 76
- 238000012360 testing method Methods 0.000 title claims abstract description 55
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000001514 detection method Methods 0.000 claims abstract description 24
- 230000001105 regulatory effect Effects 0.000 claims description 30
- 238000002347 injection Methods 0.000 claims description 23
- 239000007924 injection Substances 0.000 claims description 23
- 239000000446 fuel Substances 0.000 claims description 22
- 239000004215 Carbon black (E152) Substances 0.000 claims description 21
- 229930195733 hydrocarbon Natural products 0.000 claims description 21
- 150000002430 hydrocarbons Chemical class 0.000 claims description 21
- 239000007788 liquid Substances 0.000 claims description 20
- 239000010425 asbestos Substances 0.000 claims description 13
- 229910052895 riebeckite Inorganic materials 0.000 claims description 13
- 230000033228 biological regulation Effects 0.000 claims description 8
- 238000005507 spraying Methods 0.000 claims description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- 238000004321 preservation Methods 0.000 claims description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000011888 foil Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 230000008093 supporting effect Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 13
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- 238000005474 detonation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052573 porcelain Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Abstract
The application belongs to the technical field of aerospace and aviation, and particularly relates to a supercritical kerosene heating device and a heating method for an ultrasonic testing stand. A supercritical kerosene heating device for a supersonic test bed comprises a storage unit, a heating unit, a detection unit and a supply unit; the storage unit, the heating unit and the supply unit are sequentially conducted, the detection unit and the supply unit are arranged in parallel, and the input end of the detection unit is communicated with the output end of the heating unit; the detecting unit is used for detecting the performance parameters of the heated kerosene, and when the performance parameters are qualified, the supplying unit supplies the heated kerosene to the engine module. This application combines storage unit, heating unit, detecting element and supply unit together ingeniously to through the interact of mutually supporting between each unit, through to kerosene flow, temperature and pressure monitoring and feedback control, can heat predetermined operating mode with kerosene fast accurately, and transport to engine module.
Description
Technical Field
The application belongs to the technical field of aerospace and aviation, and particularly relates to a supercritical kerosene heating device and a heating method for an ultrasonic testing stand.
Background
In the field of aviation, in the research of the working process of a scramjet engine and a rotary detonation engine which take supercritical kerosene as fuel, a device for heating the kerosene to be supercritical needs to be developed under the ground test condition of the engine so as to research the injection characteristics of the kerosene under different injection pressure, temperature and inflow working conditions.
However, the heating time of the existing heating device is long, and the outlet temperature of the existing heating device cannot be accurately regulated and controlled, so that the requirement of the existing engine ground test cannot be met.
Therefore, a supercritical kerosene heating device and a heating method for a supersonic test bed are needed to solve the technical problems in the prior art to a certain extent.
Disclosure of Invention
The application aims to provide a supercritical kerosene heating device and a heating method for a supersonic test bed, so that the technical problems that in the prior art, the heating time is long, the outlet temperature cannot be accurately regulated and controlled, and the requirement of the existing engine ground test cannot be met are solved to a certain extent.
The application provides a supercritical kerosene heating device for a supersonic test bed, which comprises a storage unit, a heating unit, a detection unit and a supply unit;
the storage unit, the heating unit and the supply unit are sequentially conducted, the detection unit and the supply unit are arranged in parallel, and the input end of the detection unit is communicated with the output end of the heating unit;
the storage unit is used for storing liquid hydrocarbon fuel; the heating unit is used for heating the liquid hydrocarbon fuel;
the heating unit includes a heating member; the heating components are arranged in plurality and are communicated in sequence;
the heating component comprises a heating pipe communicated with the storage unit and a heating power supply used for heating the heating pipe;
the plurality of heating components sequentially heat the liquid hydrocarbon fuel;
the detection unit is used for detecting the performance parameters of the heated liquid hydrocarbon fuel, and when the performance parameters are qualified, the supply unit supplies the heated liquid hydrocarbon fuel to the engine module.
In the above technical solution, further, the air conditioner further comprises a pressurization unit; the output end of the pressurizing unit is communicated with the input end of the storage unit;
the pressurizing unit comprises a pressurizing tank, and the pressurizing tank pressurizes the storage unit through a pipeline.
In the above technical solution, further, the heating unit further includes a heat preservation member; the heat preservation component is arranged on a pipeline communicated between the adjacent heating components;
the heat preservation component comprises an asbestos layer and an aluminum foil layer wrapped on the asbestos layer, the asbestos layer wraps the pipeline, and a heat tracing band is arranged in the asbestos layer.
In the above technical solution, further, the detection unit includes a discharge path cooler; the output end of the heating unit is communicated with the discharge path cooler through a pipeline;
the pipeline is sequentially provided with a first regulating valve, a first pressure sensor, a first thermocouple and a first injector at intervals;
the first regulating valve is close to the output end of the heating unit.
In the above technical solution, further, the supply unit includes a test pipeline; the input end of the test pipeline is communicated with the output end of the heating unit;
a second regulating valve, a second pressure sensor, a second thermocouple and a second injector are sequentially arranged on the test pipeline at intervals;
the second regulating valve is close to the output end of the heating unit.
In the above technical solution, further, a connecting member is disposed at a connection position of the heating pipe and the pipeline, and the connecting member includes an upper cover plate, an insulating block, and a lower cover plate, which are sequentially arranged;
the upper cover plate is connected with the pipeline, and the lower cover plate is connected with the heating pipe.
In the above technical solution, further, sealing gaskets are respectively disposed between the insulating block and the upper cover plate and between the insulating block and the lower cover plate.
In the above technical solution, further, the heating pipe is made of stainless steel, the outer diameter of the heating pipe is set between 2mm and 2.5mm, and the inner diameter of the heating pipe is set between 1.5 mm and 1.8 mm.
The application also provides a supercritical kerosene heating method for the supersonic test bed, which comprises the following steps:
setting target parameters: setting the flow of the liquid hydrocarbon fuel sprayed by the second sprayer as m, the spraying pressure as p and the spraying temperature as t;
pressurizing the storage unit: closing the second injector, opening the first injector, and pressurizing the storage unit to between 1p and 2p through the pressurizing unit; the voltages of the plurality of heating power supplies are all set to be 5V;
first-stage regulation of heating power supply voltage: adjusting the third adjusting valve to enable the flow of the output end of the storage unit to be between 1/4m and 1/2 m; increasing the voltage of a plurality of heating power supplies to ensure that the voltage difference between two adjacent heating power supplies is between 8 and 10V;
secondary regulation of heating power supply voltage: continuing to adjust the voltage of the plurality of heating power supplies so that the injection temperature of the second injector is t;
opening degree adjustment of a third adjusting valve: ensuring that the injection temperature of the second injector is t, increasing the opening of the third regulating valve, and increasing the voltage values of the plurality of heating power supplies to ensure that the flow is gradually increased to m and the injection pressure is gradually increased to p;
injection test: the first injector was closed and the second injector was opened for injection testing.
Compared with the prior art, the beneficial effect of this application is:
the application provides a supercritical kerosene heating device for a supersonic test bed, which comprises a storage unit, a heating unit, a detection unit and a supply unit;
the storage unit, the heating unit and the supply unit are sequentially conducted, the detection unit and the supply unit are arranged in parallel, and the input end of the detection unit is communicated with the output end of the heating unit;
the storage unit is used for storing liquid hydrocarbon fuel;
the heating unit is used for heating the liquid hydrocarbon fuel;
the detection unit is used for detecting the performance parameters of the heated liquid hydrocarbon fuel, and when the performance parameters are qualified, the supply unit supplies the heated liquid hydrocarbon fuel to the engine module.
Specifically, this application combines storage unit, heating unit, detecting element and supply unit together ingeniously to through the mutually supporting effect between each unit, through to kerosene flow, temperature and pressure monitoring and feedback control, can heat predetermined operating mode with kerosene fast accurately, and transport to the engine module.
Further, the heating unit in this application adopts the form that a plurality of heating members communicate in order, guarantees that the heating is rapid, the start-up is fast, and the heat flow is big.
The application also provides a supercritical kerosene heating method for the supersonic test bed, which comprises the following steps:
setting target parameters: setting the flow of the liquid hydrocarbon fuel sprayed by the second sprayer as m, the spraying pressure as p and the spraying temperature as t;
pressurizing the storage unit: closing the second injector, opening the first injector, and pressurizing the storage unit to between 1p and 2p through the pressurizing unit; the voltages of the plurality of heating power supplies are all set to be 5V;
first-stage regulation of heating power supply voltage: adjusting the third adjusting valve to enable the flow of the output end of the storage unit to be between 1/4m and 1/2 m; increasing the voltage of a plurality of heating power supplies to ensure that the voltage difference between two adjacent heating power supplies is between 8 and 10V;
secondary regulation of heating power supply voltage: continuing to adjust the voltage of the plurality of heating power supplies so that the injection temperature of the second injector is t;
opening degree adjustment of a third adjusting valve: ensuring that the injection temperature of the second injector is t, increasing the opening of the third regulating valve, and increasing the voltage values of the plurality of heating power supplies to ensure that the flow is gradually increased to m and the injection pressure is gradually increased to p;
injection test: the first injector was closed and the second injector was opened for injection testing.
Specifically, the high-temperature small-flow kerosene is used for filling the pipeline at the beginning, and preheating of the chain structural part is completed with less kerosene loss; in the adjusting process, firstly the jetting temperature reaches a preset parameter, then the flow and jetting pressure of kerosene are improved in a mode of increasing the opening of the third adjusting valve and improving the voltage of the heating member, and when all the parameters meet the requirements, the supply unit is conducted to carry out experimental tests, so that the shorter heating time and the higher adjusting precision are realized.
Drawings
In order to more clearly illustrate the detailed description of the present application or the technical solutions in the prior art, the drawings needed to be used in the detailed description of the present application or the prior art description will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a supercritical kerosene heating device for a supersonic test bed provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of a heating unit according to an embodiment of the present application.
Reference numerals:
100-a memory cell; 101-a heating unit; 103-a detection unit; 104-a supply unit; 106-a pressurizing unit; 107-a pressurized tank; 108-heating tube; 110-a stress-reducer; 111-a third pressure sensor; 112-a discharge valve; 114-a shut-off valve; 115-a filter; 122-a flow meter; 124-heating power supply; 125-a thermal insulation member; 129-third regulating valve; 131-a discharge path cooler; 132-a first regulating valve; 133-a first pressure sensor; 134-first thermocouple; 135-a first injector; 136-test line; 137-two regulating valves; 138-a second pressure sensor; 139-second thermocouple; 140-a second injector; 141-a connecting member; 142-an upper cover plate; 143-an insulating block; 144-a lower cover plate; 145-a storage tank; 146-third thermocouple.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments of the present application, but not all embodiments.
The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application.
All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; the connection can be mechanical connection or communication connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Example one
The supercritical kerosene heating apparatus for a supersonic test stand according to some embodiments of the present application is described below with reference to fig. 1 and 2.
The supercritical kerosene heating device for the supersonic test bed is mainly applied to hydrocarbon fuel injection in a scramjet engine and a rotary detonation engine.
Specifically, the supercritical kerosene heating apparatus for a supersonic test stand comprises a storage unit 100, a heating unit 101, a detection unit 103, and a supply unit 104;
in particular, the storage unit 100 is used for storing liquid hydrocarbon fuel, preferably kerosene, the output end of the storage unit 100 is communicated with the input unit of the heating unit 101 through a pipeline, and a stop valve 114 and a third regulating valve 129 are arranged on the pipeline; wherein the stop valve 114 is close to the storage unit 100, and the third adjustment is opposite to the heating unit 101; when the shutoff valve 114 and the third regulating valve 129 are opened, kerosene in the storage unit 100 can be conducted into the heating unit 101.
Further, a filter 115 and a flow meter 122 are arranged before the stop valve 114 and the third regulating valve 129; a filter 115 is adjacent to the shut-off valve 114; the stop valve 114 can prevent heated kerosene from flowing back into the storage unit 100, and prevent the storage unit 100 from exploding; the filter 115 is used for filtering the kerosene from the storage unit 100 and preventing the residue in the kerosene from being introduced into the heating unit 101; the flow meter 122 is used to monitor the flow into the heating unit 101 in real time.
Further, the storage unit 100 includes a storage tank 145, and the storage tank 145 is provided with a third pressure sensor 111 and a discharge valve 112; the third pressure sensor 111 monitors the pressure in the storage tank 145 in real time; when the storage tank 145 is not required to store kerosene, the kerosene in the storage tank 145 is discharged through the discharge valve 112.
Specifically, the heating unit 101 is used for heating kerosene, one end of the output end of the heating unit 101 is communicated with the supply unit 104, and the output end of the heating unit 101 is also communicated with the detection unit 103 through a discharge pipeline, that is, the detection unit 103 and the supply unit 104 are arranged in parallel; further, the detection unit 103 includes a discharge line cooler 131 communicating with a discharge line on which a first regulating valve 132, a first pressure sensor 133, a first thermocouple 134, and a first injector 135 are disposed; the first regulating valve 132 is close to the output end of the heating unit 101; the first regulating valve 132 can regulate the flow rate on the discharge pipeline, the first pressure sensor 133 is used for measuring the pressure value of kerosene in the discharge pipeline, and the first thermocouple 134 is used for measuring the temperature of the kerosene in the discharge pipeline. After heating kerosene for a certain time, conducting the kerosene into the detection unit 103 through a discharge pipeline, monitoring performance parameters (flow parameters, pressure parameters and temperature parameters) of the heated kerosene in real time by using a first regulating valve 132, a first pressure sensor 133 and a first thermocouple 134 in the conducting process, if the parameters are unqualified, collecting the parameters by a discharge pipeline cooler 131, and if the parameters are qualified, proving that the heated kerosene meets the requirements of an engine module at the moment; at this time, the first control valve 132 is closed, the supply unit 104 is opened, and the heated kerosene is conducted to the engine module for testing.
Further, the supply unit 104 includes a test line 136; the input end of the test pipeline 136 is communicated with the output end of the heating unit 101; a second regulating valve 137, a second pressure sensor 138, a second thermocouple 139 and a second injector 140 are sequentially arranged on the test pipeline 136 at intervals; the second regulating valve 137 is close to the output end of the heating unit 101; the second regulating valve 137 can regulate the flow rate on the test pipeline 136, the second pressure sensor 138 is used for measuring the pressure value of kerosene in the test pipeline 136, and the first thermocouple 134 is used for measuring the temperature of the kerosene in the test pipeline 136.
In conclusion, the storage unit 100, the heating unit 101, the detection unit 103 and the supply unit 104 are skillfully combined together, and kerosene can be rapidly and accurately heated to a preset working condition and conveyed to an engine module through monitoring and feedback adjustment of kerosene flow, temperature and pressure through the mutual cooperation effect among the units.
In this embodiment, the supercritical kerosene heating apparatus for supersonic test stand further includes a pressurizing unit 106; the output end of the pressurization unit 106 is communicated with the input end of the storage unit 100; the pressurization unit 106 comprises a pressurization tank 107, and the pressurization tank 107 can realize pressurization of 0-10MPa to the storage unit 100 through a pipeline; further, a pressure reducer 110 is provided on the pressure-increasing tank 107, and when the pressure in the pressure-increasing tank 107 becomes too high, a certain pressure is released by the pressure reducer 110.
In this embodiment, the heating unit 101 includes a heating member; in order to increase the outlet temperature of kerosene at the output end of the heating unit 101, a plurality of heating members are arranged and are arranged at intervals through pipelines; the heating means includes a heating pipe 108 communicating with the storage unit 100 through a third regulating valve 129 and a heating power source 124 for heating the heating pipe 108 for injecting the liquid hydrocarbon fuel; the heating members sequentially heat the kerosene to enable the kerosene to rapidly reach a preset temperature, so that the ground test of the engine is met.
Specifically, explanation will be given taking an example in which the heating member is provided with two, which are a primary heating member and a secondary heating member, respectively; the power supply voltage of the first-stage heating component and the second-stage heating component is 60V and 80V respectively, the rated current is 40A and 50A respectively, and the output voltage and current can be controlled in real time; the primary heating component can heat the kerosene from room temperature to 600K, and the secondary heating component can further heat the kerosene to 900K.
Specifically, the heating pipe 108 is made of stainless steel, the heating member is electrically heated, and the heating pipe 108 made of stainless steel is short-circuited with a large-current power supply by the electrical heating, so that heat is generated in the wall of the heating pipe 108 made of stainless steel by current, and the heat is transferred to kerosene in the heating pipe 108 in a heat conduction manner.
More specifically, the heating tube 108 is required to have good resistance heating characteristics during actual use; in order to prevent the local heat transfer deterioration caused by the large temperature difference between the tube wall of the heating tube 108 and the kerosene; on the other hand, to reduce heat dissipation and transport time; in this embodiment, the outer diameter of the heating tube 108 is set to 2.2mm, the inner diameter of the heating tube 108 is set to 1.8mm, and the single stage length is 2.2 m.
In this embodiment, a plurality of heating members are provided in the present application in order to ensure that the temperature of kerosene is constant when the kerosene is transferred between the plurality of heating members; the heating unit 101 further comprises a heat-insulating member 125; the heat insulation member 125 is disposed on a pipeline communicated between adjacent heating members; the heat insulation member 125 includes an asbestos layer and an aluminum foil layer, the asbestos layer is wrapped on the pipeline between the adjacent heating members, and a heat tracing band is arranged in the asbestos layer.
Furthermore, the asbestos layer prevents heat loss of kerosene in the transportation process, even if part of heat is lost, a heat tracing band arranged in the asbestos layer can supplement the lost heat in time, and the aluminum foil layer on the outermost layer can prevent temperature from interfering other surrounding measurement and control equipment.
Furthermore, a heat insulating member 125 is also provided on a pipe connecting the heating unit 101 and the supply unit 104.
In this embodiment, a connection member 141 is disposed at a connection position between the heating pipe 108 and the pipeline, and the connection member 141 mainly insulates the pipeline from the heating pipe 108 to prevent the pipeline from being heated; the connection member 141 includes an upper cover plate 142, an insulating block 143, and a lower cover plate 144, which are sequentially arranged and connected by bolts.
Specifically, the upper cover plate 142 is connected to the pipeline by a three-way valve, three passages of the three-way valve are respectively used for connecting the pipeline, the upper cover plate 142 and a third thermocouple 146, and the third thermocouple 146 is used for detecting the temperature of kerosene flowing into the heating unit 101; the lower cover plate 144 is connected with the heating tube 108 through a stainless steel ferrule, so that the heating tube 108 is convenient to replace.
More specifically, hard silver-plated O-type gaskets are disposed between the insulating block 143 and the upper cover plate 142 and the lower cover plate 144, respectively.
Further, the porcelain block is made of zirconia, is insulating and high-temperature resistant, has a hollow cylindrical structure, and can allow kerosene to pass through the center.
Example two
The application also provides a supercritical kerosene heating method for the supersonic test bed, which comprises the following steps:
setting target parameters: setting the flow of the liquid hydrocarbon fuel sprayed by the second sprayer as m, the spraying pressure as p and the spraying temperature as t;
pressurizing the storage unit: pressurizing the storage unit to 1.5p by a pressurizing unit; the voltage of a heating power supply of the first-stage heating component and the voltage of a heating power supply of the second-stage heating component are both set to be 5V;
first-stage regulation of heating power supply voltage: the third regulating valve 129 is regulated so that the kerosene flow at the output of the storage unit is 1/3 m; after the flow is confirmed to be normal, increasing the voltage of two heating power supplies, wherein the voltage of a primary power supply is 30V, and the voltage of a secondary power supply is 40V;
secondary regulation of heating power supply voltage: continuously adjusting the voltage values of the heating power supply on the primary heating member and the secondary heating power supply on the secondary heating member to make the temperature of the kerosene sprayed by the second injector 140 be t;
opening degree adjustment of a third adjusting valve: ensuring that the injection temperature of the second injector 140 is t, continuously increasing the voltage values of the heating power supply on the first-stage heating member and the second-stage heating power supply on the second-stage heating member, and increasing the opening degree of the third regulating valve 129, so that the flow is gradually increased to m, and the injection pressure is gradually increased to p;
injection test: the kerosene flow was stable, the outlet temperature t, the flow rate m, and the injection pressure p were maintained, the first injector 135 was closed, and the second injector 140 was opened to perform the injection test.
And (4) finishing the test: the stop valve 114 is closed, the heating component and the secondary heating component are removed, and the heating of the kerosene is finished.
In conclusion, the high-temperature small-flow kerosene filling pipeline is used for completing the preheating of the chain structural part with less kerosene loss at the beginning of the application; in the adjusting process, the jetting temperature reaches a preset parameter, then the flow rate and the jetting pressure of the kerosene are improved in a mode of increasing the opening of the third adjusting valve and improving the voltage of the heating member, the supply unit 104 is conducted when all the parameters meet the requirements, experimental tests are conducted, and short heating time and high adjusting precision are achieved.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (9)
1. A supercritical kerosene heating device for a supersonic speed test bed is characterized by comprising a storage unit, a heating unit, a detection unit and a supply unit;
the storage unit, the heating unit and the supply unit are sequentially conducted, the detection unit and the supply unit are arranged in parallel, and the input end of the detection unit is communicated with the output end of the heating unit;
the storage unit is used for storing liquid hydrocarbon fuel; the heating unit is used for heating the liquid hydrocarbon fuel;
the heating unit includes a heating member; the heating components are arranged in plurality and are communicated in sequence;
the heating component comprises a heating pipe communicated with the storage unit and a heating power supply used for heating the heating pipe;
the plurality of heating components sequentially heat the liquid hydrocarbon fuel;
the detection unit is used for detecting the performance parameters of the heated liquid hydrocarbon fuel, and when the performance parameters are qualified, the supply unit supplies the heated liquid hydrocarbon fuel to the engine module.
2. The supercritical kerosene heating apparatus for supersonic test stand according to claim 1, further comprising a pressurizing unit;
the output end of the pressurizing unit is communicated with the input end of the storage unit;
the pressurizing unit comprises a pressurizing tank, and the pressurizing tank pressurizes the storage unit through a pipeline.
3. The supercritical kerosene heating apparatus for supersonic test stand according to claim 1, characterized in that said heating unit further comprises a heat-insulating member;
the heat preservation component is arranged on a pipeline communicated between the adjacent heating components;
the heat preservation component comprises an asbestos layer and an aluminum foil layer wrapped on the asbestos layer, the asbestos layer wraps the pipeline, and a heat tracing band is arranged in the asbestos layer.
4. The supercritical kerosene heating apparatus for supersonic test stand according to claim 1, characterized in that said detection unit includes a discharge path cooler;
the output end of the heating unit is communicated with the discharge path cooler through a pipeline;
the pipeline is sequentially provided with a first regulating valve, a first pressure sensor, a first thermocouple and a first injector at intervals;
the first regulating valve is close to the output end of the heating unit.
5. The supercritical kerosene heating apparatus for supersonic test stand according to claim 1, characterized in that said supply unit includes a test line;
the input end of the test pipeline is communicated with the output end of the heating unit;
a second regulating valve, a second pressure sensor, a second thermocouple and a second injector are sequentially arranged on the test pipeline at intervals;
the second regulating valve is close to the output end of the heating unit.
6. The supercritical kerosene heating device for a supersonic test stand according to claim 5, wherein a connecting member is provided at the junction of the heating pipe and the pipeline, the connecting member comprising an upper cover plate, an insulating block and a lower cover plate arranged in sequence;
the upper cover plate is connected with the pipeline, and the lower cover plate is connected with the heating pipe.
7. The supercritical kerosene heating apparatus for a supersonic test stand according to claim 6, wherein sealing gaskets are respectively provided between the insulating block and the upper cover plate and between the insulating block and the lower cover plate.
8. The supercritical kerosene heating apparatus for supersonic test stand according to claim 1, wherein said heating tube is made of stainless steel, the outer diameter of said heating tube is set between 2-2.5mm, and the inner diameter of said heating tube is set between 1.5-1.8 mm.
9. A supercritical kerosene heating method for a supersonic test bed is characterized by comprising the following steps:
setting target parameters: setting the flow of the liquid hydrocarbon fuel sprayed by the second sprayer as m, the spraying pressure as p and the spraying temperature as t;
pressurizing the storage unit: closing the second injector, opening the first injector, and pressurizing the storage unit to between 1p and 2p through the pressurizing unit; the voltages of the plurality of heating power supplies are all set to be 5V;
first-stage regulation of heating power supply voltage: adjusting the third adjusting valve to enable the flow of the output end of the storage unit to be between 1/4m and 1/2 m; increasing the voltage of a plurality of heating power supplies to ensure that the voltage difference between two adjacent heating power supplies is between 8 and 10V;
secondary regulation of heating power supply voltage: continuing to adjust the voltage of the plurality of heating power supplies so that the injection temperature of the second injector is t;
opening degree adjustment of a third adjusting valve: ensuring that the injection temperature of the second injector is t, increasing the opening of the third regulating valve, and increasing the voltage values of the plurality of heating power supplies to ensure that the flow is gradually increased to m and the injection pressure is gradually increased to p;
injection test: the first injector was closed and the second injector was opened for injection testing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111625906.9A CN114279709A (en) | 2021-12-28 | 2021-12-28 | Supercritical kerosene heating device and heating method for supersonic test bed |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202111625906.9A CN114279709A (en) | 2021-12-28 | 2021-12-28 | Supercritical kerosene heating device and heating method for supersonic test bed |
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