阅读说明：本技术 一种高温高压航空煤油流动传热试验装置 (High-temperature high-pressure aviation kerosene flow heat transfer test device ) 是由 王新宇 谢光荣 王程永 王小昳 王德深 于 2021-07-30 设计创作，主要内容包括：本发明的一种高温高压航空煤油流动传热试验装置,包括煤油供应单元,还包括煤油加热单元、废气液处理单元、安全防护单元和测控单元,煤油供应单元、煤油加热单元和废气液处理单元之间通过输送管路依次连接；所述煤油供应单元包括储油箱和电机泵组,储油箱通过输送管路与电机泵组连接；煤油加热单元是在封闭试验舱内依次连接有预热段、测量段和试验段,所述煤油供应单元末端通过输送管路与预热段连通。本发明的一种高温高压航空煤油流动传热试验装置,主要用于研究航空煤油等碳氢燃料在高温高压条件下的流动传热和结焦特性,为航空煤油在大推力火箭发动机主动再生冷却技术的应用提供重要依据。(The invention relates to a high-temperature high-pressure aviation kerosene flow heat transfer test device, which comprises a kerosene supply unit, a kerosene heating unit, a waste gas liquid treatment unit, a safety protection unit and a measurement and control unit, wherein the kerosene supply unit, the kerosene heating unit and the waste gas liquid treatment unit are sequentially connected through a conveying pipeline; the kerosene supply unit comprises an oil storage tank and a motor pump set, and the oil storage tank is connected with the motor pump set through a conveying pipeline; the kerosene heating unit is sequentially connected with a preheating section, a measuring section and a test section in a closed test chamber, and the tail end of the kerosene supply unit is communicated with the preheating section through a conveying pipeline. The invention relates to a high-temperature high-pressure aviation kerosene flow heat transfer test device which is mainly used for researching the flow heat transfer and coking characteristics of hydrocarbon fuels such as aviation kerosene and the like under the high-temperature high-pressure condition and provides an important basis for the application of aviation kerosene in the active regeneration cooling technology of a high-thrust rocket engine.)

1. The utility model provides a high temperature high pressure aviation kerosene flow heat transfer test device, includes kerosene supply unit (27), its characterized in that still includes kerosene heating unit (28), waste gas liquid processing unit (29), safety protection unit (4) and observes and controls unit (13), connects gradually through pipeline (3) between kerosene supply unit (27), kerosene heating unit (28) and the waste gas liquid processing unit (29); the kerosene supply unit (27) comprises an oil storage tank (1) and a motor pump set (2), and the oil storage tank (1) is connected with the motor pump set (2) through a conveying pipeline (3); the kerosene heating unit (28) is connected with a preheating section (6), a measuring section (7) and a test section (8) in turn in a closed test chamber (5), the tail end of the kerosene supply unit (27) is communicated with the preheating section (6) through a conveying pipeline (3), two ends of the preheating section (6) are clamped with an electrode I (9), an alternating current power supply I (11) is electrically connected with two ends of the preheating section (6) through the electrode I (9), two ends of the test section (8) are clamped with an electrode II (10), an alternating current power supply II (12) is electrically connected with two ends of the test section (8) through the electrode II (10), alternating current power supply I (11) and alternating current power supply II (12) all with power divider electric connection, power divider inserts measurement and control unit (13), and the exit end of test section (8) passes through conveying line (3) and is connected with waste gas liquid processing unit (29).

2. The high-temperature high-pressure aviation kerosene flow heat transfer test device as claimed in claim 1, wherein the kerosene supply unit (27) further comprises an adjusting valve (21) and a flow meter (22), the adjusting valve (21) and the flow meter (22) are sequentially arranged on the conveying pipeline (3) between the motor pump set (2) and the preheating section (6), and the adjusting valve (21) and the flow meter (22) are both in data connection with the measurement and control unit (13).

3. The high-temperature high-pressure aviation kerosene flow heat transfer test device as claimed in claim 1, characterized in that the preheating section (6), the measuring section (7) and the testing section (8) are all alloy pipelines, both ends of the preheating section (6) located outside the electrode I (9) are provided with insulation joints I (17), and both ends of the testing section (8) located outside the electrode II (10) are provided with insulation joints II (18).

4. The high-temperature high-pressure aviation kerosene flow heat transfer test device as claimed in claim 1, wherein the waste gas liquid treatment unit (29) comprises a cooling device (14) and a waste gas liquid separation, collection and recovery device (15), the other end of the test section (8) is connected with the cooling device (14) through the conveying pipeline (3), and the other end of the cooling device (14) is connected with the waste gas liquid separation, collection and recovery device (15) through the conveying pipeline (3).

5. The high-temperature high-pressure aviation kerosene flow heat transfer test device as claimed in claim 1, wherein said safety protection unit (4) comprises a leakage alarm system (23), a fire protection system (24) and an emergency start-stop system (25), the leakage alarm system (23), the fire protection system (24) and the emergency start-stop system (25) are all in data connection with the measurement and control unit (13); the leakage alarm system (23) is respectively in data connection with the fire-fighting system (24) and the emergency start-stop system (25), and the emergency start-stop system (25) is connected with the kerosene supply unit (27) and the kerosene heating unit (28).

6. The kerosene flow heat transfer testing device for high-temperature and high-pressure aviation according to claim 2 or 5, wherein the leakage alarm system (23) comprises a host (16) and a combustible gas detector (26), and the combustible gas detector (26), the fire protection system (24) and the emergency start-stop system (25) are all in data connection with the host (16); the emergency start-stop system (25) is connected with the motor pump group (2), the regulating valve (21), the alternating current power supply I (11) and the alternating current power supply II (12).

7. The kerosene flow heat transfer testing device for high-temperature and high-pressure aviation according to claim 6, wherein the emergency start-stop system (25) is provided with an emergency start-stop button, and the emergency start-stop button is connected with the motor-pump set (2), the regulating valve (21), the alternating current power supply I (11) and the alternating current power supply II (12).

8. The high-temperature high-pressure aviation kerosene flow heat transfer test device as claimed in claim 1 or 3, characterized in that the measurement section (7) is provided with a plurality of pressure measurement points and temperature measurement points, the inlet end and the outlet end of the preheating section (6) and the test section (8) are provided with a pressure measuring element (19) and a temperature measuring element (20), and the pressure measuring element (19) and the temperature measuring element (20) are in data connection with the measurement and control unit (13).

9. The high-temperature high-pressure aviation kerosene flow heat transfer test device as claimed in claim 3, characterized in that the insulation joint I (17) and the insulation joint II (18) are both made of metal material and organic insulation material.

Technical Field

The invention belongs to a device in the field of research and test of thermal management and thermal protection application of a liquid rocket engine, and particularly relates to a high-temperature high-pressure aviation kerosene flow heat transfer test device.

Background

With the continuous development of the development of a high-thrust heavy liquid rocket engine, an engine thrust chamber faces the severe test of thermal protection of high temperature, high pressure and high heat flux density. Active regenerative cooling techniques using jet fuel as the coolant have proven to be a very effective cooling means. Meanwhile, the aviation kerosene has wide source, low price and excellent performance. However, the temperature and pressure of the engine are continuously increased, and the research on the flow heat transfer performance of the aviation kerosene at high temperature and high pressure is still in the blank stage.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a high-temperature high-pressure aviation kerosene flow heat transfer test device.

The invention relates to a high-temperature high-pressure aviation kerosene flow heat transfer test device, which comprises a kerosene supply unit, a kerosene heating unit, a waste gas liquid treatment unit, a safety protection unit and a measurement and control unit, wherein the kerosene supply unit, the kerosene heating unit and the waste gas liquid treatment unit are sequentially connected through a conveying pipeline; the kerosene supply unit comprises an oil storage tank and a motor pump set, and the oil storage tank is connected with the motor pump set through a conveying pipeline; the kerosene heating unit is connected with preheating section, measurement section and test section in proper order in sealed test cabin, the terminal conveying pipeline and the preheating section intercommunication of kerosene supply unit, the both ends clamp of preheating section have electrode I, alternating current power supply I pass through the both ends electric connection of electrode I and preheating section, the both ends clamp of test section have electrode II, alternating current power supply II pass through the both ends electric connection of electrode II and test section, alternating current power supply I and alternating current power supply II all with power distributor electric connection, power distributor inserts the unit of observing and controling, and the exit end of test section passes through conveying pipeline and is connected with waste gas liquid processing unit.

As a further improvement of the invention, the kerosene supply unit also comprises a regulating valve and a flowmeter, the regulating valve and the flowmeter are sequentially arranged on the conveying pipeline between the motor pump set and the preheating section, and the regulating valve and the flowmeter are both in data connection with the measurement and control unit.

As a further improvement of the invention, the preheating section, the measuring section and the testing section are all alloy pipelines, the two ends of the preheating section positioned outside the electrode I are respectively provided with an insulating joint I, and the two ends of the testing section positioned outside the electrode II are respectively provided with an insulating joint II.

As a further improvement of the invention, the waste gas liquid treatment unit comprises a cooling device and a waste gas liquid separation, collection and recovery device, the other end of the test section is connected with the cooling device through a conveying pipeline, and the other end of the cooling device is connected with the waste gas liquid separation, collection and recovery device through a conveying pipeline.

As a further improvement of the invention, the safety protection unit comprises a leakage alarm system, a fire-fighting system and an emergency start-stop system, the leakage alarm system, the fire-fighting system and the emergency start-stop system are all in data connection with the measurement and control unit, the leakage alarm system is in data connection with the fire-fighting system and the emergency start-stop system respectively, and the emergency start-stop system is connected with the kerosene supply unit and the kerosene heating unit.

As a further improvement of the invention, the leakage alarm system comprises a host and a combustible gas detector, wherein the combustible gas detector, the fire-fighting system and the emergency start-stop system are all in data connection with the host; the emergency starting and stopping system is connected with the motor pump set, the regulating valve, the alternating current power supply I and the alternating current power supply II.

As a further improvement of the invention, the emergency start-stop system is provided with an emergency start-stop button which is connected with the motor pump set, the regulating valve, the alternating current power supply I and the alternating current power supply II.

As a further improvement of the invention, a plurality of pressure measuring points and temperature measuring points are arranged on the measuring section, and pressure measuring elements and temperature measuring elements are arranged at the inlet ends and the outlet ends of the preheating section and the testing section and are in data connection with the measurement and control unit.

As a further improvement of the invention, the insulating joint I and the insulating joint II are both made of metal materials and organic insulating materials.

The invention relates to a high-temperature high-pressure aviation kerosene flow heat transfer test device which is mainly used for researching the flow heat transfer and coking characteristics of hydrocarbon fuels such as aviation kerosene and the like under the high-temperature high-pressure condition and provides an important basis for the application of aviation kerosene in the active regeneration cooling technology of a high-thrust rocket engine. The constant heating of the preheating section and the test section is realized by using a resistance heating mode, the flowing speed of the kerosene is controlled by the adjusting valve, the length of the test section is controlled, the residence time of the kerosene in the kerosene heating unit can be controlled, and the accurate control of the kerosene heating cracking process is realized.

Drawings

FIG. 1 is a schematic structural diagram of a high-temperature high-pressure aviation kerosene flow heat transfer test device of the present invention;

FIG. 2 is a schematic diagram of a high-temperature high-pressure aviation kerosene flow heat transfer test device.

Detailed Description

The invention relates to a high-temperature high-pressure aviation kerosene flow heat transfer test device, which comprises a kerosene supply unit 27, a kerosene heating unit 28, a waste gas liquid processing unit 29, a safety protection unit 4 and a measurement and control unit 13, wherein the measurement and control unit 13 is an industrial personal computer, and can process various monitored data of the device and control each unit. Kerosene supply unit 27, kerosene heating unit 28 and waste gas liquid processing unit 29 connect gradually through conveying line 3 between, kerosene supply unit 27 includes batch oil tank 1, motor pump package 2, governing valve 21 and flowmeter 22, and batch oil tank 1 passes through conveying line 3 and is connected with motor pump package 2, and kerosene supply unit 27 is used for providing the cold state kerosene that the experiment needs, can adjust the pipeline through motor pump package 2 and governing valve 21 in kerosene test pressure, flow and velocity of flow, and flowmeter 22 is used for monitoring kerosene supply unit 27's real-time flow.

Be equipped with kerosene heating unit 28 in the closed test cabin 5, closed test cabin 5 can guarantee experimental safety, and kerosene heating unit 28 connects gradually preheating section 6, measuring section 7 and test section 8 in closed test cabin 5, and preheating section 6, measuring section 7 test section 8 are the alloy pipeline. The tail end of the kerosene supply unit 27 is communicated with the preheating section 6 through a conveying pipeline 3, the conveying pipeline 3 is sequentially provided with an adjusting valve 21 and a flowmeter 22, and the adjusting valve 21 and the flowmeter 22 are in data connection with the measurement and control unit 13. The both ends of preheating section 6 are pressed from both sides and are embraced electrode I9, alternating current power supply I11 and pass through electrode I9 and preheating section 6's both ends electric connection, and the both ends department that is located preheating section 6 in the electrode I9 outside all is equipped with insulating joint I17, and alternating current power supply I11 is connected electrode I9 and is carried out rapid stabilization and heating to the kerosene in preheating section 6, can select one-level heating or multistage heating according to the experimental temperature for the preliminary intensification of high temperature test to kerosene, insulating joint I17 adopts metal material and organic insulating material to constitute for the insulation at preheating section 6 both ends. The both ends of test section 8 are pressed from both sides and are embraced electrode II 10, alternating current power supply II 12 and pass through electrode II 10 and test section 8's both ends electric connection, and the both ends that lie in the test section 8 in the electrode II 10 outside all are equipped with insulating joint II 18, and alternating current power supply II 12 is connected electrode II 10 and is carried out rapid and stable heating to the kerosene in test section 8 to through the length of adjustment test section 8 and then control the time that kerosene stops in the hot area, insulating joint II 18 adopts metal material and organic insulating material to constitute for the insulation at test section 8 both ends. The alternating current power supply I11 and the alternating current power supply II 12 are both electrically connected with the power divider, and the power divider is connected to the measurement and control unit 13. The measuring section 7 is provided with a plurality of pressure measuring points and temperature measuring points, the pressure and the temperature are respectively monitored by a pressure measuring element 19 and a temperature measuring element 20, and the number and the positions of the pressure measuring points and the temperature measuring points can be adjusted according to the test requirement; the inlet ends and the outlet ends of the preheating section 6 and the test section 8 are respectively provided with a load cell 19 and a temperature measuring cell 20, the load cells 19 and the temperature measuring cells 20 are respectively in data connection with the measurement and control unit 13, and can monitor the real-time temperature and pressure of the inlet and outlet of the preheating section 6 and the inlet and outlet of the test section 8 and monitor the real-time temperature and pressure of the measurement section 7. Alternating current power supply I11, alternating current power supply II 12, governing valve 21 and flowmeter 22 all with measurement and control unit 13 data connection, the other end of test section 8 passes through conveying line 3 and is connected with waste gas liquid processing unit 29.

Be equipped with the hand valve on the pipeline that links to each other with waste gas liquid processing unit 29, can realize the effect of sample, waste gas liquid processing unit 29 includes cooling device 14 and waste gas liquid separation collection recovery unit 15, the exit end of test section 8 passes through conveying pipeline 3 and is connected with cooling device 14, and cooling device 14 can prevent that kerosene export high temperature from scalding the test personnel, and cooling device 14's the other end passes through conveying pipeline 3 and waste gas liquid separation collection recovery unit 15 is connected. The waste gas-liquid separation, collection and recovery device 15 comprises a gas adsorption device and a waste liquid tank, and is an existing device, gas enters the gas adsorption device through a pipeline, and liquid is automatically left in the waste liquid tank.

The safety protection unit 4 comprises a leakage alarm system 23, a fire protection system 24 and an emergency start-stop system 25, the leakage alarm system 23, the fire protection system 24 and the emergency start-stop system 25 are all in data connection with the measurement and control unit 13, the leakage alarm system 23 comprises a host computer 16 and a combustible gas detector 26, the fire protection system 24 and the emergency start-stop system 25 are all in data connection with the host computer 16, the fire protection system 24 comprises a switch valve and a fire extinguisher, and the switch valve is used for controlling the on-off of the fire extinguisher; the emergency start-stop system 25 is connected with the motor pump unit 2, the regulating valve 21, the alternating current power supply I11 and the alternating current power supply II 12; the emergency starting and stopping system 25 is connected with the kerosene supply unit 27 and the kerosene heating unit 28, the emergency starting and stopping system 25 is further provided with an emergency starting and stopping button, and the emergency starting and stopping button is connected with the motor pump set 2, the regulating valve 21, the alternating current power supply I11 and the alternating current power supply II 12. The leakage alarm system 23 is used for monitoring the kerosene leakage condition, when the kerosene leakage or explosive combustion condition is monitored, the fire extinguishing system 24 starts a fire extinguisher to cool and extinguish the device, the emergency start-stop system 25 starts and emergently stops the device, and the motor-pump set 2, the regulating valve 21, the alternating current power supply I11 and the alternating current power supply II 12 do not operate at the moment; when other uncontrollable factors occur in the test, the emergency start-stop button can be used for carrying out one-key scram on the device.

When the device is used for testing, the motor pump set 2 is opened to convey kerosene in the oil storage tank 1 to the kerosene heating unit 28, meanwhile, according to test requirements, the pressure, flow and flow speed of the kerosene test can be adjusted through the motor pump set 2 and the regulating valve 21, and meanwhile, the flow meter 22 is used for monitoring the flow of the kerosene in real time. After the kerosene enters the preheating section 6, the kerosene is subjected to preliminary heating through an alternating current power supply I11, and the temperature and the pressure at the inlet and the outlet of the preheating section 6 are monitored in real time through a load cell 19 and a temperature measuring cell 20; after passing through the preheating section 6, the kerosene sequentially passes through the measuring section 7 and the testing section 8, meanwhile, the pressure measuring elements 19 and the temperature measuring elements 20 monitor the pressure and the temperature of each pressure measuring point and each temperature measuring point of the measuring section 7 in real time, the temperature and the pressure at the inlet and the outlet of the testing section 8 are monitored, the kerosene can be cracked when heated to a certain temperature, the residence time of the kerosene in a hot area is controlled by adjusting the length of a pipeline of the testing section 8, the kerosene can be in different heating time and heating temperature, meanwhile, the motor pump set 2 can provide a high-pressure environment, and the flowing heat transfer condition of the kerosene under high temperature and high pressure can be obtained through the monitored flow, pressure and temperature data. After the kerosene flows out of the test section 8, the kerosene after the test is sampled by using a hand valve, the kerosene cracking test product is collected and the components of the kerosene cracking test product are analyzed, the coking characteristic of the kerosene under high temperature and high pressure can be researched, and the waste gas and liquid are recovered by the waste gas-liquid separation collection and recovery device 15 after the collection is finished. The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto. Within the scope of the technical idea of the invention, numerous simple modifications can be made to the technical solution of the invention, including combinations of the individual specific technical features in any suitable way. The invention is not described in detail in order to avoid unnecessary repetition. Such simple modifications and combinations should be considered within the scope of the present disclosure as well.