CN202844731U - Pure oxygen filter for spaceflight - Google Patents
Pure oxygen filter for spaceflight Download PDFInfo
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- CN202844731U CN202844731U CN 201220394234 CN201220394234U CN202844731U CN 202844731 U CN202844731 U CN 202844731U CN 201220394234 CN201220394234 CN 201220394234 CN 201220394234 U CN201220394234 U CN 201220394234U CN 202844731 U CN202844731 U CN 202844731U
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- filter element
- filter
- tin bronze
- pure oxygen
- welding
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Abstract
The utility model aims at providing a pure oxygen filter for spaceflight, wherein the surface quality and the antioxidant performance of the filter are very high, and the use intensity of a filter element is high. The technical scheme adopted by the utility model is as follows: the pure oxygen filter for spaceflight comprises an upper shell, a lower shell, the filter element and a sealing pad; the filter element is in an all-welded structure comprising a filter element framework and a filter element filtering layer; the filter element filtering layer adopts a sintered tin bronze net; the filter element framework comprises a framework cylinder body and process steps arranged at two ends of the framework cylinder body; the filter element filtering layer adopts the sintered tin bronze net which is wrapped on the framework cylinder body, and two sides of the sintered tin bronze net are closely attached to the inner sides of the process steps; and the sealing pad is made of red copper. The pure oxygen filter provided by the utility model realizes efficient and safe filtration of pure oxygen, and provides reliable guarantee for pressure test of an oxygen supply system.
Description
Technical field
The utility model relates to a kind of filter, the space flight pure oxygen filter that especially a kind of rocket fuel oxygen system testing stand filters pure oxygen at the trial.
Background technology
For guaranteeing rocket flight safety, before flight, must carry out various ground performances to rocket and detect.Whether good detection also is one of important test item to rocket fuel oxygen system service behaviour, and the pure oxygen in the oxygen system need be filtered rear feed point ignition system.The filter that filters now pure oxygen adopts stainless steel, and stainless steel produces spark easily when larger compression shock, and pure oxygen is met spark and easily produced blast, thereby has potential safety hazard.Also there is following problem in the filter core of filter interior on welding manner in addition:
The argon arc welding welding manner: the argon arc welding arc flame is unstable, and the heat-affected zone is large, and weld seam is irregular easily to deform;
Plasma weldering welding manner: plasma welding arc flame is more stable, the easy oxidation of weld seam, and high-temperature anticorrosive is poor;
The Laser Welding welding manner: highly reflective and high conductivity material such as aluminium, copper and alloy, weldability can Stimulated Light change.
The utility model content
The purpose of this utility model provides a kind of space flight pure oxygen filter, and this filter surfaces quality and non-oxidizability are very high, and the working strength of filter core self is large.
The technical scheme that the utility model uses is as follows: space flight pure oxygen filter, comprise upper shell 1, lower house 4, filter core 2 and sealing gasket 3, filter core 2 is all-welded structure, it comprises frame of filter element 21 and filter element filtering layer 22, filter element filtering layer 22 adopts the tin bronze sintered meshwork, frame of filter element 21 comprises the skeleton stack shell and is arranged on the technique step 211 at its two ends, and the tin bronze sintered meshwork is rolled in tube of skeleton with it and the medial surface of the technique step 211 of skeleton is close on both sides; The material of sealing gasket 3 is red copper.
The upper and lower casing of space flight pure oxygen filter described in the utility model, the material of frame of filter element are all selected tin bronze or monel.
The tin bronze sintered meshwork is by the multiple layer metal weaving silk screen of lamination compacting with vacuum-sintering.
Because pure oxygen is met the characteristic that spark easily produces blast, the upper and lower casing of pure oxygen filter, the material of frame of filter element are all selected tin bronze or monel, and the filter element filtering net is selected the tin bronze sintered meshwork.Tin bronze has higher mechanical property, Wear vesistance and corrosion resistance, easy machining, and soldering and melting welding performance are good, and constriction coefficient is little, and is nonmagnetic, do not produce spark during impact.The sealing gasket material is selected red copper.Thereby guaranteed the safe and reliable conveying of pure oxygen.
Filter element adopts the electron beam all-welded structure.Sintered meshwork is that multiple layer metal is woven silk screen, forms by technique manufacturings such as lamination compacting and vacuum-sinterings, has higher mechanical strength and extraordinary integral rigidity structure.The mesh of each layer silk screen is interlaced, form a kind of homogeneous and desirable filtration, can reasonably mate and design pore size, permeance property and the strength characteristics of material, thereby make it have good filtering accuracy, filter impedance, mechanical strength, wearability, heat resistance and processed property, filter effect is seemed control easily.Because its strobe utility is both surface filtration, and the mesh duct is smooth, so it has excellent backwash and regeneration performance, can repeatedly use for a long time, be particularly suitable for the operating process of serialization and automation.
Frame of filter element is by tin-bronze rod or monel processing and fabricating, and the skeleton two ends are provided with the technique step at the place of being welded to connect with tin bronze sintered meshwork two ends; When welding the tin bronze sintered meshwork is rolled on the skeleton, its two ends note closes the medial surface of the technique step at skeleton two ends; Adopt electro-beam welding method to carry out axial joint close welding and the two ends circumference soldering of tin bronze sintered meshwork and skeleton.
The skeleton two ends are provided with the technique step at the place of being welded to connect with tin bronze sintered meshwork two ends, have guaranteed the all-welded structure of filter element and the working strength of filter core self; Because electron beam welding is to carry out under vacuum state, the surface quality of weld seam and non-oxidizability are very high, have improved greatly welding performance and the serviceability of filter core, have strengthened weld strength, have prolonged service life.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is described in further detail
Fig. 1 is the structural representation of the utility model space flight pure oxygen filter
Fig. 2 is the filter cartridge construction figure of filter shown in Figure 1
Fig. 3 is the process area stage structure figure of the filter core of filter shown in Figure 1
The specific embodiment
The utility model space flight pure oxygen filter comprises upper shell, filter lower house, filter core, sealing gasket four parts, such as Fig. 1, design processing, assembling and the material selection of this filter all satisfies the requirement of concerned countries standard and industry standard, the upper and lower casing connection sealing is good, satisfy two way seal, compact conformation, processing performance are good.
The material of the upper and lower casing of pure oxygen filter, frame of filter element parts is all selected tin bronze or monel, filter element adopts the electron beam all-welded structure as shown in Figure 2, it comprises frame of filter element 21 and filter element filtering layer 22, filter element filtering layer 22 adopts the tin bronze sintered meshwork, frame of filter element 21 comprises the skeleton stack shell and is arranged on the technique step 211 at its two ends, and the tin bronze sintered meshwork is rolled in tube of skeleton with it and the medial surface of the technique step 211 of skeleton is close on both sides; The material of sealing gasket 3 is red copper.The tin bronze sintered meshwork is that multiple layer metal is woven silk screen, forms by technique manufacturings such as lamination compacting and vacuum-sinterings, has higher mechanical strength and extraordinary integral rigidity structure.
Frame of filter element is the all-welded structure of realizing filter element and the working strength that improves filter core self by tin-bronze rod or monel processing and fabricating, and the skeleton two ends are being provided with the technique step with the place of being welded to connect, tin bronze sintered meshwork two ends.First the tin bronze sintered meshwork is rolled on the stack shell of skeleton, adopts axially closing of electronics weldering realization tin bronze sintered meshwork to meet welding, tin bronze sintered meshwork and skeleton are fitted tightly.Carry out afterwards the technique step at skeleton two ends and the circumference soldering at tin bronze sintered meshwork two ends.
The welding method of the utility model filter core is as follows:
Step 1: respectively frame of filter element, tin bronze sintered meshwork are reached the frock clamp that matches with it and process;
Step 2: clean the greasy dirt of removing frame of filter element, tin bronze sintered meshwork and welding tooling chucking surface, prevent from welding process, producing bubble; With clean acetone soln cleaning workpiece and frock clamp, then dry or dry, require to dry or dry afterwards without the greasy dirt vestige;
Step 3: first the tin bronze sintered meshwork is rolled on the skeleton, the medial surface of the technique step at its two ends and skeleton two ends is fitted, and frame of filter element, tin bronze sintered meshwork is assembled with the welding tooling anchor clamps again; During assembling, the abutment joint of frame of filter element, tin bronze sintered meshwork requires to be positioned at the centre of weld jig reserving gaps, and abutment joint is straight, and the width maximum of anchor clamps reserving gaps is no more than 3mm, and frame of filter element, tin bronze sintered meshwork will be adjacent to and fix with weld jig;
Step 4: the frame of filter element, the tin bronze sintered meshwork clamping that assemble are arrived the welding chamber; The weld jig that assembles will be fixed in the welding chamber, prevents that the position is moved when welding;
Step 5: the frame of filter element that soldering group installs, tin bronze sintered meshwork;
(1) shut welding booth's door and vacuumizing: ready lamp was bright when welding booth's vacuum reached the high vacuum of setting, ER equipment ready;
(2) adjust welding parameter: parameter comprises focusing, bias voltage, filament, high pressure, line, weld interval, straight line or rotary speed etc.;
The range of choice of high pressure is: 0 ~ 60kV;
The range of choice of filament is: 0 ~ 20mA;
The range of choice of bias voltage is: 0 ~ 1800V;
Focusing is divided into surface focusing, upper focusing and lower focusing, and electron beam is gentleer during upper focusing welding, and surface forming is good, and penetration capacity is poor; Penetration capacity is strong during lower focusing welding, and surface forming is poor;
(3) welding: press lower bundle button and rotary handle, lower bundle welding;
(4) require that the welding rear surface is smooth, even weld, without the solder skip phenomenon;
Step 6: clean and remove the welding oxidation tint;
Step 7: do the filter cartridge construction integrity test.
Embodiment 1:
Step 1: respectively frame of filter element, tin bronze sintered meshwork are reached the frock clamp that matches with it and process;
Step 2: clean the greasy dirt of removing frame of filter element, tin bronze sintered meshwork and welding tooling chucking surface, prevent from welding process, producing bubble; With clean acetone soln cleaning workpiece and frock clamp, then dry or dry, require to dry or dry afterwards without the greasy dirt vestige;
Step 3: first the tin bronze sintered meshwork is rolled on the skeleton, the medial surface of the technique step at its two ends and skeleton two ends is fitted, and frame of filter element, tin bronze sintered meshwork is assembled with the welding tooling anchor clamps again; During assembling, the abutment joint of the frame of filter element of wanting, tin bronze sintered meshwork requires to be positioned at the centre of weld jig reserving gaps, and abutment joint is straight, and the width maximum of anchor clamps reserving gaps is no more than 3mm, and frame of filter element, tin bronze sintered meshwork will be adjacent to and fix with weld jig;
Step 4: the frame of filter element, the tin bronze sintered meshwork clamping that assemble are arrived the welding chamber; The weld jig that assembles will be fixed in the welding chamber, prevents that the position is moved when welding;
Step 5: the frame of filter element that soldering group installs, tin bronze sintered meshwork;
(1) shut welding booth's door and vacuumizing: ready lamp was bright when welding booth's vacuum reached the high vacuum of setting, ER equipment ready;
(2) adjust welding parameter: parameter comprises focusing, bias voltage, filament, high pressure, line, weld interval, straight line or rotary speed etc.;
The range of choice of high pressure is: 40kV,
The range of choice of filament is: 19mA,
The range of choice of bias voltage is: 800V,
Focusing is divided into surface focusing, upper focusing and lower focusing, and electron beam is gentleer during upper focusing welding, and surface forming is good, and penetration capacity is poor; Penetration capacity is strong during lower focusing welding, and surface forming is poor;
(3) welding: press lower bundle button and rotary handle, lower bundle welding.
(4) require that the welding rear surface is smooth, even weld, without the solder skip phenomenon.
Step 6: clean and remove the welding oxidation tint.
Step 7: do the filter cartridge construction integrity test.
Embodiment 2
Other step is with embodiment 1, and welding parameter of electron beam is respectively:
The range of choice of high pressure is: 50kV,
The range of choice of filament is: 19.5mA,
The range of choice of bias voltage is: 1200V,
Embodiment 3
Other step is with embodiment 1, and welding parameter of electron beam is respectively:
The range of choice of high pressure is: 60kV,
The range of choice of filament is: 20mA,
The range of choice of bias voltage is: 1800V,
Following table is the report of the utility model filter element integrity test, and the filter work system requires filter core to emit bubble point greater than 600 Pa.
| Sequence number | The first bubbling pressure | Group's bubbling pressure | Result of the test |
| 1 | 850Pa | 920?Pa | Qualified |
| 2 | 880?Pa | 920?Pa | Qualified |
| 3 | 800?Pa | 900?Pa | Qualified |
| 4 | 650?Pa | 900?Pa | Qualified |
| 5 | 800?Pa | 900?Pa | Qualified |
| 6 | 800?Pa | 920?Pa | Qualified |
| 7 | 850?Pa | 1020?Pa | Qualified |
The filter cartridge construction that the utility model adopts so that this space flight pure oxygen filter surfaces quality and non-oxidizability are very high, has improved serviceability greatly.And guaranteed that filter core can bear be not less than 200 times repeatedly wash away under the condition of work of 35MPa, guarantee the service life of filter.This utility model has realized effective, the safety filtering to pure oxygen, for the oxygen system pressure test provides reliable guarantee, fills up the industry blank, and is that company creates very large benefit.
The above; it only is the better specific embodiment of the utility model; but protection domain of the present utility model is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; be equal to replacement or change according to the technical solution of the utility model and utility model design thereof, all should be encompassed within the protection domain of the present utility model.
Claims (3)
1. space flight pure oxygen filter, comprise upper shell (1), lower house (4), filter core (2) and sealing gasket (3), described filter core comprises frame of filter element (21) and filter element filtering layer (22): it is characterized in that: described filter core (2) is all-welded structure, frame of filter element (21) comprises the skeleton stack shell and is arranged on the technique step (211) at its two ends, filter element filtering layer (22) adopts the tin bronze sintered meshwork, and the tin bronze sintered meshwork is rolled in tube of skeleton with it and the medial surface of the technique step (211) of skeleton is close on both sides; Sealing gasket (3) is red copper.
2. space flight pure oxygen filter as claimed in claim 1 is characterized in that: material selection tin bronze or the monel of described upper shell (1), lower house (4), frame of filter element (21).
3. space flight pure oxygen filter as claimed in claim 1 or 2 is characterized in that: described tin bronze sintered meshwork is by the multiple layer metal weaving silk screen of lamination compacting with vacuum-sintering.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220394234 CN202844731U (en) | 2012-08-09 | 2012-08-09 | Pure oxygen filter for spaceflight |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220394234 CN202844731U (en) | 2012-08-09 | 2012-08-09 | Pure oxygen filter for spaceflight |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202844731U true CN202844731U (en) | 2013-04-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220394234 Expired - Fee Related CN202844731U (en) | 2012-08-09 | 2012-08-09 | Pure oxygen filter for spaceflight |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103424027A (en) * | 2013-07-05 | 2013-12-04 | 武汉艾力特阀门自控有限公司 | Pure heating device with anti-scaling device |
| CN103566656A (en) * | 2012-08-09 | 2014-02-12 | 新乡市天诚航空净化设备有限公司 | Aerospace pure oxygen filter and welding method thereof |
| CN103737170A (en) * | 2014-02-12 | 2014-04-23 | 新乡市利尔过滤技术有限公司 | Welding process for metal filter elements |
| CN103753010A (en) * | 2014-02-12 | 2014-04-30 | 新乡市利尔过滤技术有限公司 | Metal filter element welded through novel electric beam welding technology |
-
2012
- 2012-08-09 CN CN 201220394234 patent/CN202844731U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103566656A (en) * | 2012-08-09 | 2014-02-12 | 新乡市天诚航空净化设备有限公司 | Aerospace pure oxygen filter and welding method thereof |
| CN103566656B (en) * | 2012-08-09 | 2015-09-23 | 新乡市天诚航空净化设备有限公司 | Space flight pure oxygen filter and welding method thereof |
| CN103424027A (en) * | 2013-07-05 | 2013-12-04 | 武汉艾力特阀门自控有限公司 | Pure heating device with anti-scaling device |
| CN103737170A (en) * | 2014-02-12 | 2014-04-23 | 新乡市利尔过滤技术有限公司 | Welding process for metal filter elements |
| CN103753010A (en) * | 2014-02-12 | 2014-04-30 | 新乡市利尔过滤技术有限公司 | Metal filter element welded through novel electric beam welding technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20150809 |
|
| EXPY | Termination of patent right or utility model |