CN103557094A - High-concentration hydrogen peroxide catalysis bed structure used for ground test of solid-liquid hybrid rocket motor - Google Patents
High-concentration hydrogen peroxide catalysis bed structure used for ground test of solid-liquid hybrid rocket motor Download PDFInfo
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- CN103557094A CN103557094A CN201310487700.3A CN201310487700A CN103557094A CN 103557094 A CN103557094 A CN 103557094A CN 201310487700 A CN201310487700 A CN 201310487700A CN 103557094 A CN103557094 A CN 103557094A
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Abstract
The invention discloses a high-concentration hydrogen peroxide catalysis bed structure used for a ground test of a solid-liquid hybrid rocket motor. An oxidant inlet is formed in an engine head cover, the engine head cover is fixedly connected to an upper end of an catalysis bed outer shell; the lower end of the catalysis bed outer shell is fixedly connected to an engine front combustion chamber; the catalysis bed outer shell is internally provided with a cavity body; the cavity body is internally provided with a catalyst; the upper end and the lower end of the catalyst are provided with a catalyst upper backstop and a catalyst lower backstop respectively; a liquid spraying panel is arranged between the catalyst upper backstop and the engine head cover; a gas spraying panel is fixed at the lower end of the catalyst bed outer shell; an adjusting ring is arranged between the gas spraying panel and the catalyst lower backstop; the engine combustion chamber shell is fixedly connected to the engine front combustion chamber. According to the invention, fixation form at the presence of different loading amounts of the catalyst and possible heated expansion in the catalyst particle catalysis process are considered, and the catalyst can be prevented from blocking a spraying hole or being sprayed out of the spraying hole.
Description
Technical field
The present invention relates to a kind of high-strength hydrogen peroxide catalytic bed structure that can be used for ground experiment hybrid rocket engine, belong to solid-liquid rocket field.
Background technique
High-strength hydrogen peroxide (referring generally to the hydrogen peroxide of mass fraction >85%) because its density is high, toxicity is low, environmentally friendly, be oxygenant conventional in hybrid rocket engine.Conventionally, hydrogen peroxide can be decomposed into high-temperature water vapor and oxygen by the catalytic bed of engine interior, fire fuel powder column in firing chamber, and high-temperature reaction product provides thrust through jet pipe ejection.Wherein, the decomposition reaction of hydrogen peroxide can be expressed as
2H
2O
2(l)→2H
2O(g)+O
2(g)+Heat
Conventional hydrogen peroxide catalyzed bed can fixedly be formed by pellet type catalyst or the netted catalytic structure encapsulation of multilayer, also can sinter integral honeycomb shape structure into, as document S.Bonifacio, G.Festa, and A.R.Sorge, " Novel Structured Catalysts for Hydrogen Peroxide Decomposition in Monopropellant and Hybrid Rockets, " Journal of Propulsion and Power, pp.1-8, described in 2013.The catalyzer of variety classes, different preparation processs is different to the catalytic efficiency of hydrogen peroxide dissociation reaction.This catalytic efficiency can be weighed by catalytic activity, i.e. the reactant quality (g/cm of the catalyzer energy catalysis of per unit volume in the unit time
3s).The design work state different to hybrid rocket engine, required hydrogen peroxide mass flow rate (g/s) is different.Therefore, in the ground experiment of hybrid rocket engine, often need to regulate the useful load of catalyzer, to determine the amount of the hydrogen peroxide of particular flow rate being decomposed completely to corresponding catalyzer.
More existing hydrogen peroxide hybrid rocket schemes, as described in patent US006991772Bl, do not relate to the structure of catalytic bed; Some documents, as patent US20110167793Al, have proposed the design of solid-liquid rocket, but do not consider detailed structure and the installation form of catalytic bed, and the amount of catalyzer cannot regulate.Meanwhile, the structure in patent US20110167793Al is not considered the dimensional fits problem of gas spray orifice after liquid spray orifice before catalyst granules and catalytic bed, catalytic bed.When catalyst granules diameter is less than the spray orifice diameter of design, need to take measures to prevent that catalyst granules from spraying through spray orifice.In addition, even if catalyst granules diameter is greater than the spray orifice diameter of design, also need to prevent that catalyzer from blocking spray orifice, affect the whole spray form of motor oxygenant.
Summary of the invention
To the object of the invention is in order addressing the above problem, to have proposed a kind of for ground experiment hybrid rocket engine, high-strength hydrogen peroxide catalytic bed structure that loaded catalyst is adjustable.
A high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine, comprises on combustion chamber before motor skull, liquid spray panel, catalytic bed frame, catalyzer, regulating ring, gas spray panel, motor, motor combustion chamber case, motor fuel powder column, catalyzer backstop under backstop, catalyzer;
Motor head covers and is provided with oxidant inlet, between oxidant inlet and liquid spray panel, forms head cavity, and motor skull is fixedly connected with the upper end of catalytic bed frame, and chamber is fired before being fixedly connected with motor in the lower end of catalytic bed frame; In catalytic bed frame, be provided with cavity, in cavity, be provided with catalyzer, the top and bottom of catalyzer are respectively equipped with on catalyzer backstop under backstop and catalyzer, liquid spray panel is set between backstop and motor skull on catalyzer, gas spray panel is fixed on catalytic bed frame lower end, under gas spray panel and catalyzer, between backstop, is provided with regulating ring; Before motor, combustion chamber is provided with front combustion chamber pressure tap; Motor combustion chamber case fires chamber before being fixedly connected with motor.
The invention has the advantages that:
(1) can be used for the high-strength hydrogen peroxide catalysis of ground experiment hybrid rocket engine, catalytic bed structure has been considered possible expanded by heating in catalyst granules catalytic process, can avoid catalyzer block spray orifice or spray through spray orifice simultaneously.
(2) can be according to the loadings of the active free adjusting catalyzer of hydrogen peroxide flow and the catalyzer that adopts.
(3) on liquid spray panel, the distribution of liquid spray orifice and aperture can be designed according to hydrogen peroxide flow, make hydrogen peroxide spray into equably catalytic bed with suitable speed.
(4) on gas spray panel, the distribution of gas spray orifice and aperture can, according to the geometrical construction flexible design of hydrogen peroxide flow and fuel powder column, make the spray position of the high-temperature decomposition product of hydrogen peroxide catalyzed rear generation match with the geometrical construction of powder column.
Accompanying drawing explanation
Fig. 1 is the sectional view of assembly structure of the present invention.
Fig. 2 is liquid spray panel worm's eye view of the present invention
Fig. 3 is the worm's eye view of gas spray panel of the present invention
In figure:
1-motor skull 2-liquid spray panel 3-catalytic bed frame
4-catalyzer 5-regulating ring 6-gas spray panel
Combustion chamber 8-motor combustion chamber case 9-motor fuel powder column before 7-motor
10-skull seal ring 11-catalytic bed seal ring 12-combustion chamber sealing circle
16 second bolt assembly 17 the 3rd bolt assembly 18-bolts
101-oxidant inlet 201-liquid spray orifice 601-gas spray orifice
Combustion chamber pressure tap before 602-counter sink 701-
Embodiment
Below in conjunction with drawings and Examples, the present invention is described in further detail.
A kind of high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine of the present invention, as shown in Figure 1, comprise on combustion chamber 7 before motor skull 1, liquid spray panel 2, catalytic bed frame 3, catalyzer 4, regulating ring 5, gas spray panel 6, motor, motor combustion chamber case 8, motor fuel powder column 9, skull seal ring 10, catalytic bed seal ring 11, combustion chamber sealing circle 12, catalyzer backstop 14, the first bolt assembly 15, the second bolt assembly 16, the 3rd bolt assembly 17, bolt 18 under backstop 13, catalyzer.
Between motor skull 1 and catalytic bed frame 3, by skull seal ring 10, seal;
Before catalytic bed frame 3 and motor, between combustion chamber 7, by catalytic bed seal ring 11, seal;
In catalytic bed frame 3, be provided with cavity, in cavity, be provided with catalyzer 4, the top and bottom of catalyzer 4 are respectively equipped with on catalyzer backstop 14 under backstop 13 and catalyzer, liquid spray panel 2 is set between backstop 13 and motor skull 1 on catalyzer, gas spray panel 6 is fixed on catalytic bed frame 3 lower ends by bolt 18, under gas spray panel 6 and catalyzer, between backstop 14, be provided with regulating ring 5, the thickness of regulating ring 5 should make catalyzer 4 can not rock in cavity;
Motor combustion chamber case 8 is by combustion chamber 7 before the 3rd bolt assembly 17 connecting engines;
Before motor combustion chamber case 8 and motor, between combustion chamber 7, by combustion chamber sealing circle 12, seal;
On catalyzer, under backstop 13 and catalyzer, backstop 14 is wire nettings of being manufactured by stainless steel or other materials compatible with hydrogen peroxide, has certain adaptability to changes, and the aperture of wire netting is less than the minimum diameter of catalyzer 4 particles.
Regulating ring 5 can be manufactured by stainless steel, aluminium or other materials compatible with hydrogen peroxide, and regulating ring 5 is ring structure, and the cylindrical channel that its internal diameter surrounds forms inner passage.
In the time need to regulating the loadings of catalyzer 4, directly change the regulating ring 5 of different-thickness, coordinate the thickness of catalyzer 4, can guarantee the fixing of catalyzer 4 under different loadings.Meanwhile, regulating ring 5 inner passages also provide space for catalyzer 4 possible expanded by heating in the process of catalyzing hydrogen peroxide, prevent that catalytic bed is destructurized.
As another embodiment of the invention, catalyzer 4 can be replaced by the netted catalytic structure of multilayer or other integrated type catalytic structure.
Working procedure:
High-strength hydrogen peroxide liquid as oxygenant enters through the oxidant inlet 101 on skull 1 head cavity that between skull 1 and liquid spray panel 2, space forms.Hydrogen peroxide in head cavity is through backstop 13 on the liquid spray orifice 201 on liquid spray panel 2 and catalyzer, and spray is uniformly to catalyzer 4.The catalyzed decomposition of hydrogen peroxide, generates high-temperature decomposition product water vapor and oxygen.Decomposition product, by backstop under catalyzer 14, regulating ring 5, reaches gas spray panel 6.Through the gas spray orifice 601 on gas spray panel 6, high-temperature decomposition product fires chamber 7 before entering motor.High-temperature oxygen reacts with motor fuel powder column 9 in motor combustion chamber case 8.
Claims (10)
1. for a high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine, comprise on combustion chamber before motor skull, liquid spray panel, catalytic bed frame, catalyzer, regulating ring, gas spray panel, motor, motor combustion chamber case, motor fuel powder column, catalyzer backstop under backstop, catalyzer;
Motor head covers and is provided with oxidant inlet, between oxidant inlet and liquid spray panel, forms head cavity, and motor skull is fixedly connected with the upper end of catalytic bed frame, and chamber is fired before being fixedly connected with motor in the lower end of catalytic bed frame; In catalytic bed frame, be provided with cavity, in cavity, be provided with catalyzer, the top and bottom of catalyzer are respectively equipped with on catalyzer backstop under backstop and catalyzer, liquid spray panel is set between backstop and motor skull on catalyzer, gas spray panel is fixed on cavity lower end, under gas spray panel and catalyzer, between backstop, is provided with regulating ring; Before motor, combustion chamber is provided with front combustion chamber pressure tap; Motor combustion chamber case fires chamber before being fixedly connected with motor.
2. a kind of high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine according to claim 1, described liquid spray panel is being processed concave station in the face of in the one side of catalyzer, and described gas spray panel is being processed concave station in the face of in the one side of catalyzer.
3. a kind of high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine according to claim 1, described regulating ring adopts stainless steel, aluminium or other materials compatible with hydrogen peroxide, regulating ring is ring structure, the cylindrical channel that internal diameter surrounds forms inner passage, and regulating ring thickness can be changed as requested.
4. a kind of high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine according to claim 1, described liquid spray panel is provided with liquid spray orifice, liquid spray orifice is uniform form, and aperture is determined according to hydrogen peroxide flow.
5. a kind of high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine according to claim 1, described gas spray panel is provided with gas spray orifice and counter sink, gas spray panel is fixedly connected with catalytic bed frame with counter sink by bolt, the distribution of the gas spray orifice on gas spray panel and aperture are according to hydrogen peroxide flow, and the geometrical construction of binding engine fuel powder column designs, matched in the spray position of the high-temperature decomposition product of hydrogen peroxide catalyzed rear generation with the geometrical construction of powder column.
6. a kind of high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine according to claim 1, the wire netting that on described catalyzer, under backstop and catalyzer, backstop adopts stainless steel or other materials compatible with hydrogen peroxide to manufacture, the aperture of wire netting is less than the minimum diameter of catalyst granules.
7. a kind of high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine according to claim 1, described catalyzer is granular or by the netted catalytic structure of multilayer or other integrated type catalytic structure.
8. a kind of high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine according to claim 1, between described motor skull and catalytic bed frame, by skull seal ring, seal, before described catalytic bed frame and motor, between combustion chamber, by catalytic bed seal ring, seal, before described motor combustion chamber case and motor, between combustion chamber, by combustion chamber sealing circle, seal.
9. a kind of high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine according to claim 1, described front combustion chamber pressure tap for external pressure transducer, measure before the temperature of pyrolysis gas after the pressure of combustion chamber or external temperature sensor measurement gas spray panel.
10. a kind of high-strength hydrogen peroxide catalytic bed structure for ground experiment hybrid rocket engine according to claim 1, the oxidant inlet welding connecting-tube nozzle that described motor head covers, connecting-tube nozzle is corresponding with upstream hydrogen peroxide transporting system caliber.
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| CN201310487700.3A CN103557094B (en) | 2013-09-18 | 2013-10-17 | A kind of ground experiment solid-liquid rocket high-strength hydrogen peroxide catalytic bed structure |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103993984A (en) * | 2014-05-23 | 2014-08-20 | 清华大学深圳研究生院 | Hydrogen-peroxide-assisted ignition device |
| CN104891054A (en) * | 2015-05-29 | 2015-09-09 | 北京航空航天大学 | Bladder-type storage tank for high concentration hydrogen peroxide |
| CN105715409A (en) * | 2016-01-14 | 2016-06-29 | 北京航空航天大学 | Annular solid-liquid catalytic ignition engine |
| CN106121864A (en) * | 2016-07-22 | 2016-11-16 | 北京航空航天大学 | A kind of head body portion combines multizone and is centrifuged spray solid-liquid rocket |
| CN106194502A (en) * | 2016-07-15 | 2016-12-07 | 北京航空航天大学 | A kind of solid-liquid Attitude rocket engine |
| CN106762228A (en) * | 2017-01-19 | 2017-05-31 | 北京航空航天大学 | The high-strength hydrogen peroxide catalytic bed that solid-liquid rocket works long hours |
| CN106837610A (en) * | 2017-04-05 | 2017-06-13 | 北京航空航天大学 | A kind of close-coupled work long hours solid-liquid rocket catalysis bed structure |
| CN106968837A (en) * | 2017-04-01 | 2017-07-21 | 北京航空航天大学 | A kind of secondary spray structure of hydrogen peroxide hybrid rocket engine afterburner |
| CN107143433A (en) * | 2017-05-17 | 2017-09-08 | 上海空间推进研究所 | Single group member liquid-propellant rocket engine radial direction chuck catalyst bed |
| CN107218857A (en) * | 2017-08-03 | 2017-09-29 | 北京航空航天大学 | Micro missile |
| CN107461277A (en) * | 2017-10-11 | 2017-12-12 | 北京航空航天大学 | A kind of ground experiment modularization hybrid rocket engine |
| CN107642436A (en) * | 2017-08-11 | 2018-01-30 | 北京航空航天大学 | A kind of hybrid rocket engine thrust gas vector controlled structure and method |
| CN109611239A (en) * | 2018-12-11 | 2019-04-12 | 上海新力动力设备研究所 | Gas generator powder column support construction |
| CN113339162A (en) * | 2021-07-21 | 2021-09-03 | 北京航空航天大学 | High-temperature-resistant pressure-drop-adjustable solid-liquid hybrid rocket engine catalytic bed |
| CN113389658A (en) * | 2021-07-21 | 2021-09-14 | 北京航空航天大学 | Pin type self-adaptive variable-thrust solid-liquid rocket engine head structure |
| CN113483098A (en) * | 2021-07-14 | 2021-10-08 | 西安航天动力研究所 | Ring groove high-pressure self-sealing mechanism and liquid flow detection device for injector plate |
| CN115653788A (en) * | 2022-12-27 | 2023-01-31 | 中国空气动力研究与发展中心空天技术研究所 | Hydrogen peroxide kerosene dual-component gas generator and working method thereof |
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| CN103993984B (en) * | 2014-05-23 | 2016-07-13 | 清华大学深圳研究生院 | A kind of hydrogen peroxide auxiliary ignition device |
| CN103993984A (en) * | 2014-05-23 | 2014-08-20 | 清华大学深圳研究生院 | Hydrogen-peroxide-assisted ignition device |
| CN104891054A (en) * | 2015-05-29 | 2015-09-09 | 北京航空航天大学 | Bladder-type storage tank for high concentration hydrogen peroxide |
| CN105715409A (en) * | 2016-01-14 | 2016-06-29 | 北京航空航天大学 | Annular solid-liquid catalytic ignition engine |
| CN106194502B (en) * | 2016-07-15 | 2018-03-02 | 北京航空航天大学 | A kind of solid-liquid Attitude rocket engine |
| CN106194502A (en) * | 2016-07-15 | 2016-12-07 | 北京航空航天大学 | A kind of solid-liquid Attitude rocket engine |
| CN106121864A (en) * | 2016-07-22 | 2016-11-16 | 北京航空航天大学 | A kind of head body portion combines multizone and is centrifuged spray solid-liquid rocket |
| CN106762228A (en) * | 2017-01-19 | 2017-05-31 | 北京航空航天大学 | The high-strength hydrogen peroxide catalytic bed that solid-liquid rocket works long hours |
| CN106968837A (en) * | 2017-04-01 | 2017-07-21 | 北京航空航天大学 | A kind of secondary spray structure of hydrogen peroxide hybrid rocket engine afterburner |
| CN106837610B (en) * | 2017-04-05 | 2019-08-06 | 北京航空航天大学 | A kind of close-coupled works long hours solid-liquid rocket catalysis bed structure |
| CN106837610A (en) * | 2017-04-05 | 2017-06-13 | 北京航空航天大学 | A kind of close-coupled work long hours solid-liquid rocket catalysis bed structure |
| CN107143433A (en) * | 2017-05-17 | 2017-09-08 | 上海空间推进研究所 | Single group member liquid-propellant rocket engine radial direction chuck catalyst bed |
| CN107218857A (en) * | 2017-08-03 | 2017-09-29 | 北京航空航天大学 | Micro missile |
| CN107642436A (en) * | 2017-08-11 | 2018-01-30 | 北京航空航天大学 | A kind of hybrid rocket engine thrust gas vector controlled structure and method |
| CN107461277A (en) * | 2017-10-11 | 2017-12-12 | 北京航空航天大学 | A kind of ground experiment modularization hybrid rocket engine |
| CN109611239A (en) * | 2018-12-11 | 2019-04-12 | 上海新力动力设备研究所 | Gas generator powder column support construction |
| CN113483098A (en) * | 2021-07-14 | 2021-10-08 | 西安航天动力研究所 | Ring groove high-pressure self-sealing mechanism and liquid flow detection device for injector plate |
| CN113339162A (en) * | 2021-07-21 | 2021-09-03 | 北京航空航天大学 | High-temperature-resistant pressure-drop-adjustable solid-liquid hybrid rocket engine catalytic bed |
| CN113389658A (en) * | 2021-07-21 | 2021-09-14 | 北京航空航天大学 | Pin type self-adaptive variable-thrust solid-liquid rocket engine head structure |
| CN115653788A (en) * | 2022-12-27 | 2023-01-31 | 中国空气动力研究与发展中心空天技术研究所 | Hydrogen peroxide kerosene dual-component gas generator and working method thereof |
| CN115653788B (en) * | 2022-12-27 | 2023-04-07 | 中国空气动力研究与发展中心空天技术研究所 | Hydrogen peroxide kerosene dual-component gas generator and working method thereof |
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