CN208997401U - Cryogenic engine multifunctional high pressure igniter valve - Google Patents
Cryogenic engine multifunctional high pressure igniter valve Download PDFInfo
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- CN208997401U CN208997401U CN201821536840.XU CN201821536840U CN208997401U CN 208997401 U CN208997401 U CN 208997401U CN 201821536840 U CN201821536840 U CN 201821536840U CN 208997401 U CN208997401 U CN 208997401U
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- 238000007789 sealing Methods 0.000 claims abstract description 22
- 239000000945 filler Substances 0.000 claims description 7
- 230000006835 compression Effects 0.000 claims description 5
- 238000007906 compression Methods 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000013461 design Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000004308 accommodation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The utility model discloses a kind of cryogenic engine multifunctional high pressure igniter valves, comprising: shell, main valve, releases valve, check valve, releases valve base, mandril valve, big spring, little spring, disc spring group, check valve spring, pressurized strut, lid and guide pad at bellows component；Wherein, shell forms main dielectric cavity with valve base is released；Big spring and little spring are respectively charged into main valve and release in the circular bore and cylindrical vestibule formed between valve；Disc spring group is mounted on release valve and the annular chamber that releases between valve base in；Pressurized strut and shell form actuation chamber, and guide pad is fitted into the right side vestibule of bellows component；Mandril valve is inserted into bellows component inner hole；Lid and the reversed cut-off chamber of shell composition, check valve is intracavitary mounted in reversely ending, and forms guiding movement pair with shell inner hole, check valve spring is in check valve inner hole.The utility model simplifies structure, improves operating life and reliable sealing performance.
Description
Technical Field
The utility model belongs to the technical field of space flight low temperature power, especially, relate to a multi-functional high pressure igniter valve for low temperature engine.
Background
China continuously pursues a larger thrust configuration in the field of low-temperature liquid power to participate in space plans such as manned lunar landing, space stations, deep space exploration and the like in China in the future. A low-temperature oxyhydrogen engine of a certain heavy rocket is determined to be a hydrogen-rich precombustion chamber afterburning circulation scheme through several rounds of deep research and demonstration, and enters a key technology attack and deepened demonstration development stage at present. The engine is developed with the aim of repeated use, and the high-reliability torch type igniter is used for replacing the conventional oxyhydrogen engine cartridge igniter to ignite the pre-combustion chamber and the thrust chamber. According to the component design requirements provided by the system, a high-voltage igniter valve suitable for the engine needs to be developed, the opening and closing of a main flow path of the valve is used for controlling the supply and the disconnection of the propellant in an ignition chamber, and the safe and reliable work of a torch igniter and the engine is ensured. Due to the fact that the working condition of the igniter valve is poor, the function of the igniter valve in the whole process of the engine is complex, and certain difficulty is caused to the structural design of the igniter valve.
SUMMERY OF THE UTILITY MODEL
The utility model provides a technical problem be: the multifunctional high-pressure igniter valve for the low-temperature engine overcomes the defects of the prior art, simplifies the structure, prolongs the action life and improves the reliable sealing performance.
The utility model discloses the purpose is realized through following technical scheme: a multifunctional high pressure igniter valve for a cryogenic engine, comprising: the device comprises a shell, a corrugated pipe assembly, a main valve, a discharge valve, a one-way valve, a discharge valve seat, a mandril valve, a large spring, a small spring, a disc spring assembly, a one-way valve spring, an actuating cylinder, a cover and a guide block; the shell and the discharge valve seat form a main medium cavity, the main valve and the discharge valve are arranged in the main medium cavity, a movable fit pair is formed by taking the cavity surface in the shell as a guide surface, and one end of the discharge valve is inserted into a spring hole of the main valve to form a pair guide between the two valves; the large spring and the small spring are respectively arranged in an annular hole cavity and a cylindrical hole cavity formed between the main valve and the discharge valve; the disc spring group is arranged in an annular cavity between the discharge valve and the discharge valve seat, and the discharge valve seat is connected with the right end of the shell; the actuating cylinder is connected with the shell to form an actuating cavity, the right end of the corrugated pipe assembly is pressed on the end face of the shell, and the guide block is arranged in the right-side hole cavity of the corrugated pipe assembly; the ejector rod valve is inserted into an inner hole of the corrugated pipe assembly, and position limitation and motion guidance are performed through the guide block; the cover and the shell form a reverse stop cavity, the one-way valve is arranged in the reverse stop cavity and forms a guide motion pair with the shell, and the one-way valve spring is arranged in an inner hole of the one-way valve.
Among the above-mentioned multi-functional high pressure igniter valve for cryogenic engine, still include: a compression ring; wherein, clamp ring and bellows subassembly right-hand member threaded connection for restriction guide block mounted position.
Among the above-mentioned multi-functional high pressure igniter valve for cryogenic engine, still include: a first sealing gasket; wherein the first sealing gasket is disposed in the ring groove between the cover and the housing.
Among the above-mentioned multi-functional high pressure igniter valve for cryogenic engine, still include: a second sealing gasket; wherein, the second sealing gasket is arranged between the actuating cylinder and the corrugated pipe component.
Among the above-mentioned multi-functional high pressure igniter valve for cryogenic engine, still include: a third sealing gasket; wherein, the third sealing gasket is arranged between the discharge valve seat and the shell.
In the multifunctional high-pressure igniter valve for the low-temperature engine, the discharge valve seat is connected with the right end of the shell through threads.
In the multifunctional high-pressure igniter valve for the low-temperature engine, the actuating cylinder is in threaded connection with the shell.
In the multifunctional high-pressure igniter valve for the low-temperature engine, the cover is in threaded connection with the shell.
Among the above-mentioned multi-functional high pressure igniter valve for cryogenic engine, still include: blowing off the filler neck; the blow-off filler neck is arranged on the shell and communicated with the reverse cut-off cavity.
Compared with the prior art, the utility model following beneficial effect has:
(1) the opening and closing of the valve main flow path of the utility model is used for controlling the supply and the disconnection of the propellant in the ignition chamber and ensuring the safe and reliable work of the torch igniter and the engine;
(2) the utility model reasonably and skillfully designs each valve guide structure, for example, the main valve and the discharge valve both take the inner hole of the shell as the main guide, and simultaneously designs the auxiliary guide between the two valves, thus ensuring the action reliability when the two valves are linked, and further improving the action life of the whole valve;
(3) the utility model discloses a different operating mode demands of each valve, the pertinence carry out sealing material selection and disk seat structural design, make the sealing pressure of each valve and sealed than the pressure ratio between being in reasonable design interval to guarantee the sealing reliability of each valve, the static seal of valve adopts redundant seal welding measure in addition, the effectual reliability that improves super high pressure low temperature static seal.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of a multifunctional high-pressure igniter valve for a cryogenic engine according to an embodiment of the present invention;
fig. 2 is another schematic diagram of a multifunctional high-pressure igniter valve for a cryogenic engine according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Fig. 1 is a schematic structural diagram of a multifunctional high-pressure igniter valve for a cryogenic engine according to an embodiment of the present invention; fig. 2 is another schematic diagram of a multifunctional high-pressure igniter valve for a cryogenic engine according to an embodiment of the present invention.
As shown in fig. 1 and fig. 2, the multifunctional high-pressure igniter valve for a cryogenic engine comprises a housing 1, a bellows assembly 2, a main valve 3, a discharge valve 4, a one-way valve 5, a discharge valve seat 6, a push rod valve 7, a large spring 8, a small spring 9, a disc spring assembly 10, a one-way valve spring 11, an actuating cylinder 12, a cover 13, a compression ring 14, a guide block 15, a first sealing gasket 16, a second sealing gasket 17, a third sealing gasket 18 and a blow-off nozzle 19. The shell 1 and the discharge valve seat form a main medium cavity, the main valve 3 and the discharge valve 4 are both directly installed in the main medium cavity, a movable fit pair is formed by taking the cavity surface in the shell 1 as a guide surface, one end of the discharge valve 4 is inserted into a spring hole of the main valve 3 to form an auxiliary guide between the two valves, a large spring 8 and a small spring 9 are respectively installed in an annular hole cavity and a cylindrical hole cavity formed between the main valve 3 and the discharge valve 4, a disc spring group 10 is installed in the annular cavity between the discharge valve 4 and the discharge valve seat 6, the discharge valve seat 6 is connected with the right end of the shell 1 through threads, and a third sealing gasket 18 is placed between the discharge valve seat and the discharge valve seat; the actuating cylinder 12 is connected with the shell 1 through threads to form an actuating cavity, the corrugated pipe assembly 2 is a main part in the actuating cavity, the right end of the corrugated pipe assembly 2 is pressed on the end face of the shell 1, the second sealing gasket 17 is arranged between the actuating cylinder 12 and the corrugated pipe assembly 2, the guide block 15 is arranged in a right hole cavity of the corrugated pipe assembly 2, the compression ring 14 is connected with the right end of the corrugated pipe assembly 2 through threads and used for limiting the installation position of the guide block 15, the ejector rod valve 7 is inserted into an inner hole of the corrugated pipe assembly 2, and position limitation and motion guidance are carried out by the guide block 15; the cover 13 and the shell 1 form a reverse stop cavity, the cover 13 and the shell 1 are also in threaded connection, the check valve 5 is arranged in the stop cavity and forms a guide motion pair with an inner hole of the shell 1, the check valve spring 11 is arranged in the inner hole of the check valve 5, and the first sealing gasket 16 is arranged in a ring groove between the cover 13 and the shell 1. The blow-off filler neck 19 is arranged in the housing 1, the blow-off filler neck 19 being in communication with the reverse cut-off chamber. Fig. 1 is a main sectional view, fig. 2 is a sectional view H-H showing a valve assembly delivery state in which the main shutter 3 is in a closed state by an initial assembly force of a large spring 8 and a small spring 9, the discharge shutter 4 is in an open state by an initial assembly force of a disc spring assembly 10, the ejector shutter 7 is in an open state by an extension bar on the main shutter 3, and the check shutter 5 is in a closed state by a check shutter spring 11.
When the low-temperature engine is precooled, the low-pressure precooling medium enters the valve main medium cavity from the inlet A, the force of the medium acting on the main valve 3 helps the main valve 3 to continuously keep closed, and the precooling medium can flow out from the outlet C through the discharge valve 4 in an open state, so that the aim of precooling the flow path of the engine is fulfilled.
After pre-cooling is finished, the engine needs to be started for ignition, high-pressure control air is introduced into an actuating cavity from a port D, control air acts on an outer cavity of the bellows component 2 to generate larger actuating force to push the ejector rod valve 6 to move rightwards, and simultaneously push the main valve 3 to overcome the elastic force of the large spring 8 and the small spring 9 and the medium acting force to move towards the opening direction, in the opening process of the main valve 3, the elastic force of the large spring 8 and the small spring 9 is increased and exceeds the elastic force of the disc spring set 10, so that the discharge valve 4 moves towards the closing direction, after the ejector rod valve 6 is in contact with a valve seat on the shell 1, the main valve 3 moves to the maximum opening position, and the discharge valve 4 overcomes the elastic force of the disc spring set 10 to close to the bottom under the action of the large spring 8 and. The respective movement strokes of the main valve 3, the leakage valve 4 and the ejector rod valve 6 need to be matched, so that the movement deformation of the large spring 8 and the small spring 9 is larger than that of the disc spring group 10, and the sufficient force for closing the leakage valve 4 to the bottom is ensured to be generated. After the main valve 3 is opened, the check valve 5 is opened against the initial assembly force of the check valve spring 11 under the action of the medium force flowing from the main valve 3, and the valve starts to provide the medium for the igniter.
After the engine is normally ignited and started and the working condition rapidly rises, the control chamber is deflated, the main valve 3 starts to be closed and is closed to the bottom under the combined action of the elastic force of the large spring 8, the small spring 9 and the differential pressure force of the medium acting on the main valve 3, the ejector rod valve 6 is opened under the combined action of the rigid force of the corrugated pipe assembly 2 and the force of the main valve 3 in the closing direction, the trace medium leaked from the main valve 3 can be led out through the opening E, and the discharge valve 4 continues to keep the closed state under the action of the medium pressure; the check valve 5 is closed under the action of the reverse medium and the elastic force of the check valve spring 11, and at the moment, the blowing-off path simultaneously starts blowing off through an F, G port to isolate the downstream high-pressure medium and the upstream high-pressure medium of the valve, so that the reliable operation of the valve is ensured, and the safety of the engine is ensured.
When the engine is shut down and the medium pressure is reduced to a certain value, the elastic force of the disc spring group 10 borne by the discharge valve 4 is basically equivalent to the resultant force acting on the discharge valve 4 to close the discharge valve, the discharge valve 4 automatically opens, and the residual medium before the valve is discharged from the discharge port C.
The embodiment carries out integrated innovation with multiple valve functions, realizes the multifunctional application of the valve in a low-temperature engine system through the ingenious layout of the multi-way valve shell and the reasonable design of each medium cavity, and meets the assembly and use requirements of the system well in performance. The utility model discloses a principle is correct, the modern design, and the structure is light and handy, and the spare part is small in quantity, and the action reliability is high, and operating mode accommodation is wide, accords with the trend of low temperature power valve integrated design.
The above-mentioned embodiments are only preferred embodiments of the present invention, and the ordinary changes and replacements within the technical solution of the present invention should be covered by the protection scope of the present invention.
Claims (9)
1. The utility model provides a multi-functional high pressure point firearm valve for cryogenic engine which characterized in that includes: the device comprises a shell (1), a corrugated pipe assembly (2), a main valve (3), a discharge valve (4), a one-way valve (5), a discharge valve seat (6), a mandril valve (7), a large spring (8), a small spring (9), a disc spring group (10), a one-way valve spring (11), an actuating cylinder (12), a cover (13) and a guide block (15); wherein,
the shell (1) and the discharge valve seat (6) form a main medium cavity, the main valve (3) and the discharge valve (4) are arranged in the main medium cavity, a movable fit pair is formed by taking the inner cavity surface of the shell (1) as a guide surface, and one end of the discharge valve (4) is inserted into a spring hole of the main valve (3) to form auxiliary guide;
the large spring (8) and the small spring (9) are respectively arranged in an annular hole cavity and a cylindrical hole cavity formed between the main valve (3) and the discharge valve (4);
the disc spring group (10) is arranged in an annular cavity between the discharge valve (4) and the discharge valve seat (6), and the discharge valve seat (6) is connected with the right end of the shell (1);
the actuating cylinder (12) is connected with the shell (1) to form an actuating cavity, the right end of the corrugated pipe assembly (2) is pressed on the end face of the shell (1), and the guide block (15) is arranged in a right-side hole cavity of the corrugated pipe assembly (2);
the ejector rod valve (7) is inserted into an inner hole of the corrugated pipe assembly (2), and position limitation and motion guide are carried out through a guide block (15);
the cover (13) and the shell (1) form a reverse stop cavity, the check valve (5) is arranged in the reverse stop cavity and forms a guide motion pair with an inner hole of the shell (1), and the check valve spring (11) is arranged in the inner hole of the check valve (5).
2. The multifunctional high pressure igniter valve for a cryogenic engine of claim 1, further comprising: a compression ring (14); the compression ring (14) is in threaded connection with the right end of the corrugated pipe assembly (2) and is used for limiting the installation position of the guide block (15).
3. The multifunctional high pressure igniter valve for a cryogenic engine of claim 1, further comprising: a first sealing gasket (16); wherein the first sealing gasket (16) is arranged in a ring groove between the cover (13) and the housing (1).
4. The multifunctional high pressure igniter valve for a cryogenic engine of claim 1, further comprising: a second sealing gasket (17); wherein the second sealing gasket (17) is disposed between the ram (12) and the bellows assembly (2).
5. The multifunctional high pressure igniter valve for a cryogenic engine of claim 1, further comprising: a third sealing gasket (18), wherein the third sealing gasket (18) is disposed between the vent valve seat (6) and the housing (1).
6. The multifunctional high-pressure igniter valve for the cryogenic engine according to claim 1, wherein: the discharge valve seat (6) is connected with the right end of the shell (1) through threads.
7. The multifunctional high-pressure igniter valve for the cryogenic engine according to claim 1, wherein: the actuating cylinder (12) is in threaded connection with the housing (1).
8. The multifunctional high-pressure igniter valve for the cryogenic engine according to claim 1, wherein: the cover (13) is in threaded connection with the housing (1).
9. The multifunctional high pressure igniter valve for a cryogenic engine of claim 1, further comprising: blowing off the filler neck (19); the blow-off filler neck (19) is arranged on the shell (1), and the blow-off filler neck (19) is communicated with the reverse cut-off cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821536840.XU CN208997401U (en) | 2018-09-19 | 2018-09-19 | Cryogenic engine multifunctional high pressure igniter valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821536840.XU CN208997401U (en) | 2018-09-19 | 2018-09-19 | Cryogenic engine multifunctional high pressure igniter valve |
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| Publication Number | Publication Date |
|---|---|
| CN208997401U true CN208997401U (en) | 2019-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821536840.XU Active CN208997401U (en) | 2018-09-19 | 2018-09-19 | Cryogenic engine multifunctional high pressure igniter valve |
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| CN (1) | CN208997401U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027329A (en) * | 2018-09-19 | 2018-12-18 | 北京航天动力研究所 | Cryogenic engine multifunctional high pressure igniter valve |
| CN110454300A (en) * | 2019-07-26 | 2019-11-15 | 蓝箭航天空间科技股份有限公司 | Valve mechanism and liquid engine for liquid-propellant rocket engine |
-
2018
- 2018-09-19 CN CN201821536840.XU patent/CN208997401U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109027329A (en) * | 2018-09-19 | 2018-12-18 | 北京航天动力研究所 | Cryogenic engine multifunctional high pressure igniter valve |
| CN109027329B (en) * | 2018-09-19 | 2023-09-29 | 北京航天动力研究所 | Multifunctional high-pressure igniter valve for low-temperature engine |
| CN110454300A (en) * | 2019-07-26 | 2019-11-15 | 蓝箭航天空间科技股份有限公司 | Valve mechanism and liquid engine for liquid-propellant rocket engine |
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