CN203214916U - Normally-opened titanium alloy gunpowder fuel gas actuated valve for satellite - Google Patents
Normally-opened titanium alloy gunpowder fuel gas actuated valve for satellite Download PDFInfo
- Publication number
- CN203214916U CN203214916U CN 201220703020 CN201220703020U CN203214916U CN 203214916 U CN203214916 U CN 203214916U CN 201220703020 CN201220703020 CN 201220703020 CN 201220703020 U CN201220703020 U CN 201220703020U CN 203214916 U CN203214916 U CN 203214916U
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- titanium alloy
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- tube
- matrix
- start valve
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Abstract
The utility model relates to a normally-opened titanium alloy gunpowder fuel gas actuated valve for a satellite. The normally-opened titanium alloy gunpowder fuel gas actuated valve for the satellite comprises a base body, a cutter, a seal component and a straight-through pipe. The cutter is arranged in an inner cavity of the base body and is in matched sealing with the base body through the seal component. A high-pressure high-temperature fuel gas cavity and a cutter channel are formed in the inner cavity of the base body in sequence. The straight-through pipe is fixed on the base body and vertically penetrates through the base body and the cutter channel. The wall of the straight-through pipe is provided with a ring-shaped through groove. A thin-walled tube is formed at the bottom of the through groove. The cutter comprises a large-diameter drive segment and a small-diameter cutting segment which are fixedly connected in sequence at one ends. The other end of the large-diameter drive segment is the high-pressure high-temperature fuel gas cavity, the other end of the small-diameter cutting segment directly faces the thin-walled tube of the straight-through pipe. The diameter of the small-diameter cutting segment becomes smaller gradually in a direction from the large-diameter drive segment, so that a cone is formed. According to the normally-opened titanium alloy gunpowder fuel gas actuated valve for the satellite, the small-diameter cutting segment of the cutter is designed into a structure with the cone, and a 'metal to metal' conical surface wedge tight seal form of the cutter and the straight-through pipe is adopted, thereby improving the reliability of the wedge tight seal after actuation of fuel gas.
Description
Technical field
The satellite that the utility model relates to can be used for satellite propulsion system and use as cut-off valve with often driving titanium alloy powder gas start valve.
Background technique
Powder gas start valve is one of automation assembly important on the satellite propulsion system, plays the effect of convection cell control in system.Powder gas start valve is that the high-pressure gas that utilizes the gunpowder detonation to produce moves, utilize metal to metal wedging type sealing configuration to guarantee reliable sealing, have reliable in action, good airproof performance, size is little, quality is light, speed of response is fast and self have as long as very the small-pulse effect power supply just can start etc. characteristics, therefore be widely used on the satellite propulsion system of disposable work.At present, in all kinds of double elements satellite propulsion systems, how powder gas start valve is for the workplace that working medium is played isolation, closing function.But existing powder gas start valve exists, and quality is big, sealing and stability are not high.
Summary of the invention
Have in order to solve existing powder gas start valve that quality is big, sealing and the not high technical problem of stability, the utility model provides a kind of satellite with often driving titanium alloy powder gas start valve, have highly reliable under vacuum environment, the long term seal performance is good, in light weight, the advantage of low flow resistance etc.
Technical solution of the present utility model:
Satellite is with often driving titanium alloy powder gas start valve, its special way is: comprise matrix, cutting knife, black box and straight-through tube, described cutting knife is arranged in the inner chamber of matrix with matrix by the black box fitted seal, described matrix inner chamber forms high pressure-temperature combustion gas chamber and cutting knife passage successively, described straight-through tube is fixed on the matrix and vertically runs through matrix and the cutting knife passage
The tube wall of described straight-through tube is provided with annular through groove, and thin walled tube is formed on the groove bottom,
Described cutting knife comprises that the big footpath that is fixedly connected sequentially drives section and path cut length, the other end that described big footpath drives section is high pressure-temperature combustion gas chamber, the other end of described path cut length is over against the thin walled tube of straight-through tube, and the diameter of described path cut length drives section to the path cut length direction formation cone that diminishes gradually from big footpath.
Above-mentioned big footpath drives section and upward is provided with sealing cone in the joint with the path cut length, the inwall of described matrix is provided with the spacing conical surface, distance between the spacing conical surface and the sealing cone is equal to or less than the distance of via and thin walled tube, and the described spacing conical surface and sealing cone form conical surface seal.
The cone angle of above-mentioned path cut length is 4 °-6 °.
Above-mentioned black box is seal ring, and described ring set drives on the section in big footpath.
Above-mentioned black box is two seal rings, and two all are sleeved on big footpath and drive on the section.
The cone angle of above-mentioned path cut length is 4 °-6 °.
Also comprise anti-burning ring, described anti-burning ring set is contained in big footpath driving section and goes up and close high pressure-temperature combustion gas chamber.
Also comprise the anti-burning ring of twice, the anti-burning ring of twice is sleeved on big footpath driving section successively and goes up and close high pressure-temperature combustion gas chamber.
Above-mentioned matrix and straight-through tube adopt electron beam welding to fix.
The advantage that the utility model has:
Be the flame ablation seal ring of avoiding gunpowder explosion to produce, cause that sealability descends, therefore, when design, adopted the sealing configuration of anti-burning ring+seal ring, can play good anti-burning sealing effect.
Adopt whole straight-through tube structural type, simplify the design of circulation passage, can improve the effect of sealing reliability and reduction flow resistance.
The beneficial effects of the utility model are:
1, the utility model is designed to into the structural type of band awl with the path cut length of cutting knife, adopts the conical surface wedging type seal form of cutting knife and straight-through tube " metal-metal ", has improved the reliability of wedging sealing after the combustion gas start.
2, the whole metal partss of the utility model adopt the titanium alloy of different performance, have not only alleviated quality of product, and have been conducive to the welding of cutting knife and straight-through tube wedging, matrix and straight-through tube.
3, the utility model adopts whole plug-in type straight-through tube, and nonmetal Sealing and vacuum environment are isolated, and guarantees nonmetal sealing part works reliability.Adopt whole straight-through tube, simplify the design of circulation passage, can realize the effect of low flow resistance.
4, the utility model has adopted the sealing configuration of anti-burning ring and seal ring, can effectively avoid the flame ablation seal ring, causes that sealability descends, and plays good anti-burning sealing effect.
5, satellite of the present utility model is with often opening the blank that titanium alloy powder gas start valve has been filled up this class formation and bore combustion gas start valve, provide a kind of highly reliable, the long term seal performance is good, in light weight, the powder gas start valve of low flow resistance.
Description of drawings
Fig. 1 is that the utility model satellite is with often opening titanium alloy powder gas start valve arrangement figure;
Fig. 2 is the schematic representation after the powder gas start valve events;
Wherein reference character is: the 1-matrix, and the 2-cutting knife, the big footpath of 21-drives section, 22-path cut length, anti-ring, 4-seal ring, 5-straight-through tube, 51-annular through groove, 6-high pressure-temperature combustion gas chamber, the 7-cutting knife passage of burning of 3-.
Embodiment
As shown in Figure 1, satellite of the present utility model is with often opening titanium alloy combustion gas start valve arrangement figure, comprise matrix 1, cutting knife 2, black box and straight-through tube 5, cutting knife is arranged in the inner chamber of matrix with matrix by the black box fitted seal, the matrix inner chamber forms high pressure-temperature combustion gas chamber 6 and cutting knife passage 7 successively, straight-through tube is fixed on the matrix and runs through matrix and the cutting knife passage, the tube wall of straight-through tube is provided with annular through groove 51, thin walled tube is formed on the groove bottom, cutting knife comprises that the big footpath that is fixedly connected sequentially drives section 21 and path cut length 22, the other end that big footpath drives section is high pressure-temperature combustion gas chamber, the other end of path cut length is over against the thin walled tube of straight-through tube, and the diameter of path cut length drives section to the path cut length direction formation conical surface that diminishes gradually from big footpath.Face angle is spent greatly, and resistance is big, is unfavorable for cutting.Conical surface angle too small, the class plane does not utilize to form wedging power, and sealability is bad, and it is best that general conical surface angle is 4 °-6 °.
Anti-ring 3, seal ring 4 and the straight-through tube 5 of burning cooperates the structure that forms that medium is played the cutout effect, and matrix 1, cutting knife 2 and seal ring 4 with cutting knife 2 lockings, prevent that it from moving before the work of combustion gas start valve; After the work of combustion gas start valve, as shown in Figure 2, cutting knife 2 is cut brokenly the thin walled tube of straight-through tube 5 and is sealed with its wedging, and the anti-ring 3 that burns prevents high-temperature high-pressure fuel gas and flame ablation seal ring.Seal ring 4 prevents that high-temperature high-pressure fuel gas from entering medium runner.
Claims (9)
1. satellite is with often driving titanium alloy powder gas start valve, it is characterized in that: comprise matrix (1), cutting knife (2), black box and straight-through tube (5), described cutting knife is arranged in the inner chamber of matrix with matrix by the black box fitted seal, described matrix inner chamber forms high pressure-temperature combustion gas chamber (6) and cutting knife passage (7) successively, described straight-through tube is fixed on the matrix and vertically runs through matrix and the cutting knife passage
The tube wall of described straight-through tube is provided with annular through groove (51), and thin walled tube is formed on the groove bottom,
Described cutting knife comprises that the big footpath that is fixedly connected sequentially drives section and path cut length, the other end that described big footpath drives section is high pressure-temperature combustion gas chamber, the other end of described path cut length is over against the thin walled tube of straight-through tube, and the diameter of described path cut length drives section to the path cut length direction formation cone that diminishes gradually from big footpath.
2. satellite according to claim 1 is with often driving titanium alloy powder gas start valve, it is characterized in that: described big footpath drives section (21) and upward is provided with sealing cone in the joint with path cut length (22), the inwall of described matrix (1) is provided with the spacing conical surface, distance between the spacing conical surface and the sealing cone is equal to or less than the distance of via and thin walled tube, and the described spacing conical surface and sealing cone form conical surface seal.
3. satellite according to claim 2 is characterized in that with often driving titanium alloy powder gas start valve: the cone angle of described path cut length is 4 °-6 °.
According to claim 1 or 2 or 3 described satellites with often driving titanium alloy powder gas start valve, it is characterized in that: described black box is seal ring, described ring set drives on the section in big footpath.
According to claim 1 or 2 or 3 described satellites with often driving titanium alloy powder gas start valve, it is characterized in that: described black box is two seal rings, two all are sleeved on big footpath and drive on the section.
6. satellite according to claim 5 is characterized in that with often driving titanium alloy powder gas start valve: the cone angle of described path cut length is 4 °-6 °.
7. satellite according to claim 5 is characterized in that with often driving titanium alloy powder gas start valve:
Also comprise anti-burning ring, described anti-burning ring set is contained in big footpath driving section and goes up and close high pressure-temperature combustion gas chamber.
8. satellite according to claim 5 is characterized in that with often driving titanium alloy powder gas start valve: also comprise the anti-burning ring of twice, the anti-burning ring of twice is sleeved on big footpath driving section successively and goes up and close high pressure-temperature combustion gas chamber.
9. satellite according to claim 5 is characterized in that with often driving titanium alloy powder gas start valve: described matrix (1) and straight-through tube (5) adopt electron beam welding to fix.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220703020 CN203214916U (en) | 2012-12-18 | 2012-12-18 | Normally-opened titanium alloy gunpowder fuel gas actuated valve for satellite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220703020 CN203214916U (en) | 2012-12-18 | 2012-12-18 | Normally-opened titanium alloy gunpowder fuel gas actuated valve for satellite |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203214916U true CN203214916U (en) | 2013-09-25 |
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ID=49204455
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220703020 Expired - Lifetime CN203214916U (en) | 2012-12-18 | 2012-12-18 | Normally-opened titanium alloy gunpowder fuel gas actuated valve for satellite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203214916U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032593A (en) * | 2012-12-18 | 2013-04-10 | 中国航天科技集团公司第六研究院第十一研究所 | Satellite-used normally-opened titanium alloy gunpowder fuel gas actuated valve |
-
2012
- 2012-12-18 CN CN 201220703020 patent/CN203214916U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103032593A (en) * | 2012-12-18 | 2013-04-10 | 中国航天科技集团公司第六研究院第十一研究所 | Satellite-used normally-opened titanium alloy gunpowder fuel gas actuated valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130925 |
|
| CX01 | Expiry of patent term |