CN212674857U

CN212674857U - Dynamic ablation test device for thermal protection material with stable gas source

Info

Publication number: CN212674857U
Application number: CN202021572089.6U
Authority: CN
Inventors: 张立晨; 杨节标; 王哲; 李桐
Original assignee: Beijing Glass Steel Institute Testing Center Co ltd
Current assignee: Beijing Glass Steel Institute Testing Center Co ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-03-09
Anticipated expiration: 2030-07-31

Abstract

The utility model belongs to the technical field of ablation examination test equipment technique and specifically relates to a thermal protection material developments ablation test device with stable air supply is related to. The device comprises an engine, a liquid oxygen tank communicated with a combustion chamber of the engine through an oxygen conveying pipeline, and a kerosene tank communicated with the combustion chamber of the engine through a kerosene conveying pipeline; a first liquid pump, an oxygen temperature control gasifier, an oxygen solenoid valve and an oxygen regulating valve are sequentially communicated with an oxygen conveying pipeline between the liquid oxygen tank and the engine; an oxygen bottle is communicated with an oxygen conveying pipeline between the oxygen temperature control gasifier and the engine; a kerosene adjusting valve and a kerosene electromagnetic valve are communicated on a kerosene conveying pipeline between the kerosene tank and the engine; the kerosene tank is also communicated with a liquid nitrogen tank through a nitrogen conveying pipeline, and a second liquid pump and a nitrogen temperature controller are sequentially communicated on the nitrogen conveying pipeline between the liquid nitrogen tank and the kerosene tank; the pipeline for communicating the nitrogen temperature controller with the kerosene tank is also communicated with a nitrogen bottle.

Description

Dynamic ablation test device for thermal protection material with stable gas source

Technical Field

The utility model belongs to the technical field of ablation examination test equipment technique and specifically relates to a thermal protection material developments ablation test device with stable air supply is related to.

Background

The aerospace technology cannot be separated from the thermal protection material, and the ablation resistance, the scouring resistance and the high-order oxidation resistance of the thermal protection material are usually examined by adopting a dynamic ablation test. The main influencing factor of the ablation test is the stability of the heat flux density, and in order to accurately control the mixing ratio of fuel, namely the pressure of a combustion chamber of an engine, the flow rates of oxygen, nitrogen and kerosene need to be accurately controlled to ensure the stability of the heat flux density.

At present, an oxygen source and a nitrogen source used in an ablation test are generally an oxygen cylinder, a nitrogen cylinder and the like, and meanwhile, in order to ensure the supply of nitrogen of oxygen, a large number of oxygen cylinders and nitrogen cylinders are needed, so that the installation is time-consuming, and meanwhile, the occupied area is large. Moreover, in the test process, due to the fact that oxygen, compressed air and jet fuel are reduced, the pressure is lower and lower, the pressure in the engine combustion chamber is unstable, parameters need to be adjusted for many times, and the obtained test data have large discreteness.

Therefore, to the above-mentioned problem the utility model discloses the urgent need provides kind of thermal protection material dynamic ablation test device with stable air supply.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a hot protective material developments ablation test device with stable air supply, the structural design through hot protective material developments ablation test device leads to the pressure instability in the engine combustion chamber in order to solve the dynamic ablation test device air supply that exists among the prior art unstable, the great technical problem of inspection data discreteness that obtains.

The utility model provides a dynamic ablation test device for thermal protection material with stable gas source, which comprises an engine, a liquid oxygen tank communicated with a combustion chamber of the engine through an oxygen conveying pipeline, and a kerosene tank communicated with the combustion chamber of the engine through a kerosene conveying pipeline; a first liquid pump, an oxygen temperature control gasifier, an oxygen solenoid valve and an oxygen regulating valve are sequentially communicated with an oxygen conveying pipeline between the liquid oxygen tank and the engine; an oxygen bottle is communicated with an oxygen conveying pipeline between the oxygen temperature control gasifier and the engine; a kerosene adjusting valve and a kerosene electromagnetic valve are communicated on a kerosene conveying pipeline between the kerosene tank and the engine; the kerosene tank is also communicated with a liquid nitrogen tank through a nitrogen conveying pipeline, and a second liquid pump and a nitrogen temperature controller are sequentially communicated on the nitrogen conveying pipeline between the liquid nitrogen tank and the kerosene tank; the pipeline for communicating the nitrogen temperature controller with the kerosene tank is also communicated with a nitrogen bottle.

Further, an oxygen flow meter is also arranged on the oxygen conveying pipeline; the kerosene conveying pipeline is provided with a kerosene flow meter.

Further, the liquid oxygen tank is fixed on the movable device.

Further, the liquid nitrogen tank is fixed to the movable device.

Further, the nitrogen conveying pipeline is also connected with the engine through a purging pipeline; the purging pipeline is provided with a purging electromagnetic valve.

Furthermore, the purging pipeline comprises a first purging pipeline and a second purging pipeline, one end of the first purging pipeline is communicated with the nitrogen conveying pipeline, and the other end of the first purging pipeline is communicated with the oxygen conveying pipeline; one end of the second purging pipeline is communicated with the nitrogen conveying pipeline, and the other end of the second purging pipeline is communicated with the kerosene conveying pipeline; the first purging pipeline and the second purging pipeline are both provided with purging solenoid valves.

Further, oxygen solenoid valves are installed on the oxygen conveying pipelines on two sides of the oxygen flow meter.

Furthermore, the engine comprises a shell, a combustion chamber is arranged in the shell, a cooling pipe is also arranged in the combustion chamber, two ends of the cooling pipe extend out of the combustion chamber and are communicated with a cooling water tank, and a third liquid pump is also communicated on the cooling pipe; the oxygen inlet of the combustion chamber is communicated with the oxygen conveying pipeline, and the kerosene inlet of the combustion chamber is communicated with the kerosene conveying pipeline.

Further, the device also comprises a controller, an oxygen pressure sensor arranged at an oxygen inlet of the combustion chamber, a kerosene pressure sensor arranged at a kerosene inlet, a first liquid pump and a second liquid pump, wherein the kerosene electromagnetic valve and the oxygen electromagnetic valve are respectively electrically connected with the controller, and the oxygen pressure sensor and the kerosene pressure sensor are both electrically connected with the controller.

Further, the device also comprises a purging electromagnetic valve and a purging starting switch; the purging start switch is electrically connected with the controller; the purging electromagnetic valve is electrically connected with the controller.

The utility model provides a pair of thermal protection material developments ablation test device with stabilize air supply compares with prior art and has following progress:

1. the utility model provides a dynamic ablation test device for thermal protection material with stable gas source, which adopts a liquid oxygen tank to store liquid oxygen and a liquid nitrogen tank to store liquid nitrogen, can reduce the usage amount of an oxygen cylinder and a nitrogen cylinder, has small occupied area and is convenient to install and use, meanwhile, the output quantities of oxygen and nitrogen can be ensured by adopting the liquid oxygen tank and the liquid nitrogen tank, and by the matching use of the oxygen temperature control gasifier, the nitrogen temperature controller, the oxygen bottle and the nitrogen bottle, can stably control the flow of oxygen and nitrogen, ensure the stability of air pressure in a combustion chamber of an engine, ensure the mixing ratio of fuel in the combustion chamber of the engine, has small fluctuation of heat flux density and high repeatability of inspection data, the problems that the pressure in the gas cylinder is different, so that the pressure in the combustion chamber of the engine is not stable and the test data cannot be repeated due to the reduction of gas in the test process can be solved.

2. The utility model provides a dynamic ablation test device for thermal protection material with stable air source, which is provided with an oxygen flow meter on an oxygen conveying pipeline; install the design of kerosene flowmeter on the kerosene delivery pipeline, oxygen flowmeter can show the flow of oxygen, makes things convenient for the flow of oxygen, and oxygen gets into the pressure of engine combustion chamber entry, and the flow of kerosene can be shown to the kerosene flowmeter, conveniently adjusts the flow of kerosene and the pressure that kerosene got into the engine combustion chamber entry, and then guarantees the ratio of oxygen and kerosene, guarantees that the atmospheric pressure in the combustion chamber is stable.

3. The utility model provides a dynamic ablation test device for thermal protection material with stable air source, which is connected with an engine through a nitrogen conveying pipeline and a purging pipeline; the design of the purging electromagnetic valve on the purging pipeline can purge the engine combustion chamber after the test is finished, so that the oxygen residue is avoided, and the safety of the laboratory is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic structural diagram of a thermal protection material dynamic ablation test apparatus with a stable gas source according to the present invention;

fig. 2 is a circuit connection relationship block diagram of the thermal protection material dynamic ablation test device with a stable air source according to the present invention.

Description of reference numerals:

1. a liquid oxygen tank; 2. a first liquid pump; 3. an oxygen temperature-controlled gasifier; 5. an oxygen solenoid valve; 6. an oxygen regulating valve; 101. an oxygen delivery line; 21. an engine; 151. a kerosene conveying line; 18. a kerosene solenoid valve; 4. an oxygen cylinder; 15. a kerosene tank; 16. a kerosene regulating valve; 11. a second liquid pump; 12. a nitrogen gas temperature controller; 10. a liquid nitrogen tank; 1001. a nitrogen gas delivery line; 13. a nitrogen gas cylinder; 7. an oxygen flow meter; 17. a kerosene flow meter; 9. purging the electromagnetic valve; 22. a first purge line; 23. a second purge line; 211. a housing; 2001. a cooling tube; 19. a third liquid pump; 20. and a cooling water tank.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, 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 simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. 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 invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; 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 invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1, the present embodiment provides a dynamic ablation test apparatus for thermal protective material with stable gas source, which includes an engine 21, a liquid oxygen tank 1 communicated with a combustion chamber of the engine 21 through an oxygen delivery pipeline 101, a kerosene tank 15 communicated with the combustion chamber of the engine 21 through a kerosene delivery pipeline 151; a first liquid pump 2, an oxygen temperature control gasifier 3, an oxygen solenoid valve 5 and an oxygen regulating valve 6 are sequentially communicated with an oxygen conveying pipeline 101 between the liquid oxygen tank 1 and the engine 21; an oxygen bottle 4 is communicated with an oxygen conveying pipeline 101 between the oxygen temperature-controlled gasifier 3 and the engine 21; a kerosene regulating valve 16 and a kerosene electromagnetic valve 18 are communicated with a kerosene conveying pipeline 151 between the kerosene tank 15 and the engine 21; the kerosene tank 15 is also communicated with a liquid nitrogen tank 10 through a nitrogen conveying pipeline 1001, and a second liquid pump 11 and a nitrogen temperature controller 12 are sequentially communicated on the nitrogen conveying pipeline 1001 between the liquid nitrogen tank 10 and the kerosene tank 15; the pipeline for communicating the nitrogen temperature controller 12 and the kerosene tank 15 is also communicated with a nitrogen bottle 13.

The utility model provides a dynamic ablation test device for thermal protection material with stable gas source, which comprises an engine 21, a liquid oxygen tank 1 communicated with a combustion chamber of the engine 21 through an oxygen conveying pipeline 101, and a kerosene tank 15 communicated with the combustion chamber of the engine 21 through a kerosene conveying pipeline 151; a first liquid pump 2, an oxygen temperature control gasifier 3, an oxygen solenoid valve 5 and an oxygen regulating valve 6 are sequentially communicated with an oxygen conveying pipeline 101 between the liquid oxygen tank 1 and the engine 21; an oxygen bottle 4 is communicated with an oxygen conveying pipeline 101 between the oxygen temperature-controlled gasifier 3 and the engine 21; a kerosene regulating valve 16 and a kerosene electromagnetic valve 18 are communicated with a kerosene conveying pipeline 151 between the kerosene tank 15 and the engine 21; the kerosene tank 15 is also communicated with a liquid nitrogen tank 10 through a nitrogen conveying pipeline 1001, and a second liquid pump 11 and a nitrogen temperature controller 12 are sequentially communicated on the nitrogen conveying pipeline 1001 between the liquid nitrogen tank 10 and the kerosene tank 15; the pipeline for communicating the nitrogen temperature controller 12 and the kerosene tank 15 is also communicated with a nitrogen bottle 13, the liquid oxygen tank 1 is used for storing liquid oxygen, the liquid nitrogen tank 10 is used for storing liquid nitrogen, the use amount of the oxygen bottle and the nitrogen bottle can be reduced, the occupied area is small, the installation and the use are convenient, meanwhile, the output quantities of oxygen and nitrogen can be ensured by adopting the liquid oxygen tank 1 and the liquid nitrogen tank 10, and by the matching use of the oxygen temperature control gasifier 3, the nitrogen temperature controller 12, the oxygen bottle 4 and the nitrogen bottle, can stably control the flow of oxygen and nitrogen, ensure the stability of air pressure in a combustion chamber of an engine, ensure the mixing ratio of fuel in the combustion chamber of the engine, has small fluctuation of heat flux density and high repeatability of inspection data, the problems that the pressure in the gas cylinder is different, so that the pressure in the combustion chamber of the engine is not stable and the test data cannot be repeated due to the reduction of gas in the test process can be solved.

As shown in fig. 1, the oxygen delivery pipe 101 of the present embodiment is further provided with an oxygen flow meter 7; the kerosene transfer line 151 is provided with a kerosene flow meter 17.

The oxygen flow meter 7 is also arranged on the oxygen conveying pipeline 101; install kerosene flowmeter 17's design on the kerosene conveying line 151, oxygen flowmeter 7 can show the flow of oxygen, makes things convenient for the flow of oxygen, and oxygen gets into the pressure of engine combustion chamber entry, and kerosene flowmeter 17 can show the flow of kerosene, conveniently adjusts the flow of kerosene and the pressure that kerosene got into the engine combustion chamber entry, and then guarantees the ratio of oxygen and kerosene, guarantees that the atmospheric pressure in the combustion chamber is stable.

The liquid oxygen tank 1 of the utility model is fixed on the movable device; the liquid nitrogen tank 10 is fixed on the movable device; the liquid oxygen tank 1 is convenient to carry, the liquid nitrogen tank 10 is convenient to carry, the liquid nitrogen tank and the liquid oxygen tank can be carried by one person, and the movable device can be a movable trolley and the like.

As shown in fig. 1, the nitrogen gas delivery line 1001 of the present embodiment is also connected to the engine 21 through a purge line; the purging pipeline is provided with a purging electromagnetic valve 9.

The nitrogen conveying pipeline 1001 is connected with the engine 21 through a purging pipeline; the design of the purging electromagnetic valve 9 on the purging pipeline can purge the combustion chamber of the engine after the test is finished, so that the oxygen residue is avoided, and the safety of the laboratory is ensured.

As shown in fig. 1, the purge line of the present embodiment includes a first purge line 22 and a second purge line 23, one end of the first purge line 22 communicates with the nitrogen gas delivery line 1001, and the other end communicates with the oxygen gas delivery line 101; one end of the second purging pipeline 23 is communicated with the nitrogen conveying pipeline 1001, and the other end is communicated with the kerosene conveying pipeline 151; the first purge line 22 and the second purge line 23 are each provided with a purge solenoid valve 9.

The utility model discloses a purge pipeline includes first purge pipeline 22 and second purge pipeline 23, one end of first purge pipeline 22 communicates with nitrogen gas conveying pipeline 1001, and the other end communicates with oxygen conveying pipeline 101; one end of the second purging pipeline 23 is communicated with the nitrogen conveying pipeline 1001, and the other end is communicated with the kerosene conveying pipeline 151; first pipeline 22 and the second of sweeping sweeps pipeline 23 and all is equipped with the design that sweeps solenoid valve 9, can avoid partial oxygen to be detained in oxygen conveying pipeline 101 to sweeping of oxygen conveying pipeline 101 and kerosene conveying pipeline 151, and the safety of assurance test avoids partial kerosene to be detained in kerosene conveying pipeline 151, causes the jam of kerosene conveying pipeline 151.

As shown in fig. 1, the oxygen solenoid valves 5 are mounted on the oxygen delivery pipes 101 on both sides of the oxygen flowmeter 7 of the present embodiment.

As shown in fig. 1, the engine 21 of the present embodiment includes a housing 211, a combustion chamber is provided in the housing 211, a cooling pipe 2001 is further provided in the combustion chamber, two ends of the cooling pipe 2001 extend out from the combustion chamber to communicate with a cooling water tank 20, and a third liquid pump 19 is further communicated with the cooling pipe 2001; the oxygen inlet of the combustion chamber is communicated with the oxygen delivery line 101, and the kerosene inlet of the combustion chamber is communicated with the kerosene delivery line 151.

The engine 21 of the utility model comprises a casing 211, a combustion chamber is arranged in the casing 211, a cooling pipe 2001 is also arranged in the combustion chamber, two ends of the cooling pipe 2001 extend out from the combustion chamber and are communicated with a cooling water tank 20, and the cooling pipe 2001 is also communicated with a third liquid pump 19, so that the cooling of the combustion chamber is realized; the oxygen inlet of the combustion chamber is communicated with the oxygen conveying pipeline 101, and the kerosene inlet of the combustion chamber is communicated with the kerosene conveying pipeline 151, so that the input of oxygen and kerosene is realized.

As shown in fig. 2, the present embodiment further includes a controller, an oxygen pressure sensor installed at the oxygen inlet of the combustion chamber, a kerosene pressure sensor installed at the kerosene inlet, a first liquid pump 2, a second liquid pump 11, a kerosene solenoid valve 18, and an oxygen solenoid valve 5, which are electrically connected to the controller, and the oxygen pressure sensor and the kerosene pressure sensor are electrically connected to the controller.

The utility model discloses a still include the controller, install in the oxygen pressure sensor of combustion chamber oxygen entry and install in the kerosene pressure sensor of kerosene entry, first liquid pump 2, second liquid pump 11, kerosene solenoid valve 18, oxygen solenoid valve 5 is connected with the controller electricity respectively, the design that oxygen pressure sensor and kerosene pressure sensor all are connected with the controller electricity, through installing in the oxygen pressure sensor of combustion chamber oxygen entry and installing in the kerosene pressure sensor of kerosene entry survey combustion chamber oxygen entry pressure and kerosene entry pressure respectively, the first liquid pump of automatic control 2, second liquid pump 11, kerosene solenoid valve 18, opening of oxygen solenoid valve 5, realize automated control.

As shown in fig. 2, the present embodiment further includes a purge solenoid valve 9 and a purge start switch; the purging start switch is electrically connected with the controller; the purging electromagnetic valve 9 is electrically connected with the controller; and automatic control of pipeline purging is realized.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled 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; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a dynamic ablation test device of thermal protection material with stable air supply which characterized in that: comprises an engine (21), a liquid oxygen tank (1) communicated with a combustion chamber of the engine (21) through an oxygen conveying pipeline (101), and a kerosene tank (15) communicated with the combustion chamber of the engine (21) through a kerosene conveying pipeline (151); a first liquid pump (2), an oxygen temperature control gasifier (3), an oxygen solenoid valve (5) and an oxygen regulating valve (6) are sequentially communicated with an oxygen conveying pipeline (101) between the liquid oxygen tank (1) and the engine (21); an oxygen bottle (4) is communicated with an oxygen conveying pipeline (101) between the oxygen temperature control gasifier (3) and the engine (21); a kerosene regulating valve (16) and a kerosene electromagnetic valve (18) are communicated on a kerosene conveying pipeline (151) between the kerosene tank (15) and the engine (21); the kerosene tank (15) is also communicated with a liquid nitrogen tank (10) through a nitrogen conveying pipeline (1001), and a second liquid pump (11) and a nitrogen temperature controller (12) are sequentially communicated on the nitrogen conveying pipeline (1001) between the liquid nitrogen tank (10) and the kerosene tank (15); a nitrogen bottle (13) is also communicated on a pipeline for communicating the nitrogen temperature controller (12) and the kerosene tank (15).

2. The dynamic ablation test device for thermal protective materials with stable air supply according to claim 1, characterized in that: an oxygen flow meter (7) is also arranged on the oxygen conveying pipeline (101); a kerosene flow meter (17) is arranged on the kerosene conveying pipeline (151).

3. The dynamic ablation test device for thermal protective materials with stable air supply according to claim 2, characterized in that: the liquid oxygen tank (1) is fixed on the movable device.

4. The dynamic ablation test device for thermal protective materials with stable air supply in claim 3, wherein: the liquid nitrogen tank (10) is fixed on the movable device.

5. The dynamic ablation test device for thermal protective material with stable air supply in claim 4, wherein: the nitrogen conveying pipeline (1001) is also connected with the engine (21) through a purging pipeline; the purging pipeline is provided with a purging electromagnetic valve (9).

6. The dynamic ablation test device for thermal protective materials with stable air supply in accordance with claim 5, wherein: the purging pipelines comprise a first purging pipeline (22) and a second purging pipeline (23), one end of the first purging pipeline (22) is communicated with the nitrogen conveying pipeline (1001), and the other end of the first purging pipeline is communicated with the oxygen conveying pipeline (101); one end of the second purging pipeline (23) is communicated with the nitrogen conveying pipeline (1001), and the other end of the second purging pipeline is communicated with the kerosene conveying pipeline (151); the first purging pipeline (22) and the second purging pipeline (23) are both provided with purging electromagnetic valves (9).

7. The dynamic ablation test device for thermal protective materials with stable air supply of claim 6, wherein: oxygen solenoid valves (5) are arranged on the oxygen conveying pipelines (101) at the two sides of the oxygen flow meter (7).

8. The dynamic ablation test apparatus for thermal protective material with stable air supply of claim 7, wherein: the engine (21) comprises a machine shell (211), a combustion chamber is arranged in the machine shell (211), a cooling pipe (2001) is further arranged in the combustion chamber, two ends of the cooling pipe (2001) extend out of the combustion chamber to be communicated with a cooling water tank (20), and a third liquid pump (19) is further communicated on the cooling pipe (2001); the oxygen inlet of the combustion chamber is communicated with an oxygen conveying pipeline (101), and the kerosene inlet of the combustion chamber is communicated with a kerosene conveying pipeline (151).

9. The dynamic ablation test apparatus for thermal protective material with stable air supply of claim 8, wherein: the device is characterized by further comprising a controller, an oxygen pressure sensor arranged at an oxygen inlet of the combustion chamber, a kerosene pressure sensor arranged at a kerosene inlet, a first liquid pump (2), a second liquid pump (11), a kerosene electromagnetic valve (18) and an oxygen electromagnetic valve (5) which are electrically connected with the controller respectively, and the oxygen pressure sensor and the kerosene pressure sensor are both electrically connected with the controller.

10. The dynamic ablation test apparatus for thermal protective material with stable air supply of claim 9, wherein: the device also comprises a purging electromagnetic valve (9) and a purging start switch; the purging start switch is electrically connected with the controller; the purging electromagnetic valve (9) is electrically connected with the controller.