CN213332542U - Check valve integrated valve set for liquid rocket engine - Google Patents
Check valve integrated valve set for liquid rocket engine Download PDFInfo
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- CN213332542U CN213332542U CN202021552358.2U CN202021552358U CN213332542U CN 213332542 U CN213332542 U CN 213332542U CN 202021552358 U CN202021552358 U CN 202021552358U CN 213332542 U CN213332542 U CN 213332542U
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- 239000007788 liquid Substances 0.000 title claims abstract description 14
- 238000007664 blowing Methods 0.000 claims abstract description 49
- 238000009423 ventilation Methods 0.000 claims description 25
- 238000007789 sealing Methods 0.000 claims description 11
- 230000009471 action Effects 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 230000003247 decreasing effect Effects 0.000 description 4
- 230000010354 integration Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000002349 favourable effect Effects 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000006854 communication Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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Abstract
The utility model discloses a check valve integrated valve group for liquid rocket engine, this check valve integrated valve group includes valve body, case, valve gap and elastic component, the valve body is equipped with many air channels, and every air channel is equipped with many branch flow channels, and every branch flow channel includes first passageway and second passageway again, and wherein the diameter of first passageway is less than the diameter of second passageway, and the position that the first passageway passes through to the second passageway forms the boss, the case forms sealedly with the boss under the elastic force effect of elastic component; the valve cover seals the valve core and is arranged on the valve body, the valve core is also provided with a medium channel, and the valve cover is provided with a gas blowing hole at a position corresponding to the medium channel of the valve core, so that gas flowing through the valve core is blown out through the gas blowing hole. The utility model provides an integrated valves of check valve is through with the integrated setting of a plurality of check valve spools in a valve body to be connected to the different runners of ventilating with a plurality of check valve spools according to the work demand, optimized engine system's overall arrangement.
Description
Technical Field
The utility model relates to a liquid rocket engine technical field, concretely relates to integrated valves of check valve for liquid rocket engine.
Background
In multiple stages of the liquid rocket on the ground or after takeoff, the engine is required to blow the interior of the engine through a ground blowing system or an arrow blowing system. The one-way valve is an important part for realizing the blowing system of the liquid rocket engine, and has the functions of preventing downstream high-pressure media from reversely crossing the blowing system when the system blows, damaging the components of the blowing system to cause the loss of the function of the blowing system and meeting the use requirements of other on-off functions of the blowing system. Because the blowing system need blow off thrust chamber and turbopump a plurality of positions, blow off pressure also is different, and each blowing way all need set for solitary check valve, consequently, this kind of blowing system need set up a plurality of check valves to it is great to lead to blowing system volume, and occupation space is many, brings inconvenience for engine system's overall arrangement and subsequent assembly.
SUMMERY OF THE UTILITY MODEL
To the above-mentioned technical problem among the correlation technique, the utility model provides an integrated valves of check valve for liquid rocket engine through set up many runners of ventilating on the valve body, every runner of ventilating divide into a plurality of branches runner of ventilating, and with the integrated setting of check valve in a valve body, is favorable to the miniaturized design of engine system, saves occupation space, optimizes the spatial layout of engine system.
The utility model provides an integrated valves of check valve for liquid rocket engine, include: a valve body having at least a first vent flow passage and a second vent flow passage, the first vent flow passage and the second vent flow passage being independent of each other; the first ventilation flow channel is divided into N branch ventilation flow channels, the second ventilation flow channel is divided into M branch ventilation flow channels, wherein N is more than or equal to 1, and M is more than or equal to 1; the branch vent flow passage further having a first channel and a second channel; wherein the diameter of the first channel is smaller than that of the second channel, and a boss is formed at the transition position of the first channel to the second channel; the valve core is arranged in the second channel, and a medium channel is arranged on the valve core; wherein the valve core is used for forming a seal with the boss through one side close to the boss; the valve cover is arranged on the side, away from the boss, of the valve core and is arranged on the valve body in a sealing mode; the valve cover is provided with a gas blowing hole at a position corresponding to the valve core medium channel, so that gas flowing through the valve core medium channel is discharged through the gas blowing hole; the elastic piece is arranged in the second channel and used for applying pressure towards the boss to the valve core so that a sealing end face formed by the valve core and the boss cuts off the first channel and the second channel; when the blowing operation is started, under the action of gas, the elastic piece is compressed, so that the valve core moves towards the direction away from the boss, the first channel is communicated with the second channel, and the blowing of the gas is realized; after the blowing operation is finished, the valve core is pressed to the boss by the elastic piece, so that the valve core separates the first channel from the second channel by the sealing end face close to the boss.
In one embodiment, the valve core comprises a tip portion near the boss side for forming a sharp-edged seal with the edge of the boss near the first channel.
In one embodiment, the valve core is provided with a medium channel penetrating through the end face of one end far away from the boss in the length direction, and at least one flow limiting hole is radially arranged at the position of the valve core close to the tip part.
In one embodiment, a portion of the valve spool distal from the metering orifice and proximal to the valve cap is slidably disposed in abutting relation with the second passage.
In one embodiment, the diameter of the valve core from the position of the flow limiting hole to the position of the end point of the tip end part is smaller than that of the second channel; when blowing operation is carried out, blowing gas is blown out from the gas blowing holes through the gap between the valve core and the second channel and the medium channel.
In one embodiment, the tip portion is a tapered structure decreasing in size toward the first passage for forming a tapered and sharp-edged line seal with the boss circumferentially to each other proximate the boss inner edge.
In one embodiment, one valve cover is arranged on one end face of the valve body, and air blowing holes are correspondingly arranged according to the number and the positions of the branch air ventilation flow passages arranged on one end face.
In one embodiment, the position of the valve cover provided with the air blowing hole is protruded in the direction far away from the valve core and is in a nozzle shape.
In any of the above embodiments, the elastic member may be a spring, and one end of the spring abuts against an end surface of the inner side of the valve element medium passage facing the valve cover, and the other end abuts against the valve cover.
In one embodiment, the diameter of the spring is larger than the diameter of the valve cover blowing hole.
The embodiment of the utility model provides a pair of integrated valves of check valve for liquid rocket engine, with a plurality of check valves integration in an integrated valves, make the structure more simple compact, it is big to have solved the use check valve area alone, and bulky problem is favorable to the miniaturized design of engine system.
Those skilled in the art will recognize additional features and advantages upon reading the detailed description, and upon viewing the accompanying drawings.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only 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 the overall structure schematic diagram of the check valve integrated valve set of the embodiment of the present invention in the communication state.
Fig. 2 is a schematic view of a valve core structure according to an embodiment of the present invention.
Fig. 3 is an overall structure schematic diagram of the check valve integrated valve set according to the embodiment of the present invention in a closed state.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings. Spatially relative terms such as "below," "… below," "lower," "above," "… above," "upper," and the like are used for convenience in describing the positioning of one element relative to a second element and are intended to encompass different orientations of the device in addition to different orientations than those illustrated in the figures. Further, for example, the phrase "one element is over/under another element" may mean that the two elements are in direct contact, or that there is another element between the two elements. Furthermore, terms such as "first", "second", and the like, are also used to describe various elements, regions, sections, etc. and should not be taken as limiting. Like terms refer to like elements throughout the description.
The utility model provides an integrated valves of check valve for liquid rocket engine. Referring to fig. 1, the check valve integrated valve block includes: the valve body 1 at least comprises a first ventilation flow channel 11 and a second ventilation flow channel 12, wherein the first ventilation flow channel 11 and the second ventilation flow channel 12 are independent, the first ventilation flow channel 11 is divided into N branch ventilation flow channels, the second ventilation flow channel 12 is divided into M branch ventilation flow channels, N is more than or equal to 1, and M is more than or equal to 1. Each of the branched vent flow passages further has a first passage 111 and a second passage 112 communicating with each other, wherein the diameter of the first passage 111 is smaller than that of the second passage 112, so that a boss 113 is formed at a position where the first passage 111 transitions to the second passage 112.
And a valve core 2 arranged in the second channel 112, the valve core 2 being provided with a medium channel, wherein the valve core 2 is used for forming a seal with the boss 113 through a side close to the boss 113.
And the valve cover 3 is arranged on the side of the valve core 2 far away from the boss 113 and is hermetically arranged on the valve body 1, and the valve cover 3 is provided with a blowing hole 31 at a position corresponding to the medium channel of the valve core 2 so that the gas flowing through the medium channel of the valve core 2 is discharged through the blowing hole 31.
And an elastic member 4 disposed in the second passage 112, wherein the elastic member 4 is used for applying pressure to the valve core 2 towards the boss 113, so that the sealing end surface formed by the valve core 2 and the boss 113 blocks the first passage 111 and the second passage 112.
When the blowing operation is started, the valve core 2 pushes the elastic member 4 under the action of the gas, so that the valve core 2 moves away from the boss 113, the elastic member 4 is compressed, and the first passage 111 is communicated with the second passage 112. The gas enters the medium channel through the gap between the valve core 2 and the boss 113 and is blown out through the air blowing hole 31 of the valve cover 3, thereby completing the air blowing operation. When the one-way valve integrated valve group does not work or the outlet pressure is higher than the inlet pressure after blowing-off work is finished, high-pressure gas stops conveying, the elastic part 4 recovers elasticity, the valve core 2 pushes the valve core 2 to move under the action of the spring 4 and the pressure difference between the outlet and the inlet, so that the valve core 2 is pressed to the boss 113 by the elastic part 4, and the valve core 2 separates the first channel 111 from the second channel 112 through the sealing end face close to the boss 113.
The embodiment of the utility model discloses a through with a plurality of check valve core integration sets up in a valve block and utilize the valve gap fixed, can be connected to the different runners of ventilating with a plurality of check valve cores according to the work demand to realize respective blowdown function. It should be noted that different ventilation channels may be connected to the same high-pressure air source P (not limited to high-pressure air, or any pressure value set by the system), and when the air source pressure value required by each ventilation channel is different, a pressure reducer or a throttle ring may be arranged between the ventilation channel and the high-pressure air source to regulate and control the pressure value, so that the application range and the application scenario of the check valve integrated valve set are wider.
For example, the check valve integrated valve group works: the first ventilation channel and the second ventilation channel are respectively connected with a high-pressure gas source P (not limited to high-pressure gas, and can be any pressure value set by a system). In the first path, a high-pressure gas source P flows into two first channels and two second channels from a first ventilation channel of the valve body (the channels between the valve core and the boss are already communicated under the action of high-pressure gas), and is blown out from a gas blowing hole of the valve cover after passing through a medium channel of the valve core of the one-way valve. In the second path, after the high-pressure gas source P is firstly decompressed by the R (R is a decompressor or a throttle ring), the pressure of the gas source is reduced to low pressure, the low-pressure gas flows into the first channel and the second channel at two positions from the second gas channel of the valve body (the channels between the valve core and the boss are already communicated under the action of the gas), and the low-pressure gas is blown out from the gas blowing hole of the valve cover after passing through the medium channel of the valve core of the one-way valve. When the check valve integrated valve group does not work or the outlet pressure is higher than the inlet pressure, the valve core is pushed to move under the action of the elastic part and the pressure difference between the outlet and the inlet to close the first ventilation flow channel and the second flow channel, namely, the check valve integrated valve group provided by the embodiment realizes sealing under the action of the elastic part and the pressure difference between the outlet and the inlet.
Referring to fig. 1, 2 and 3 simultaneously, fig. 1 illustrates a state in which the check valve integrated block is ventilated, and fig. 3 illustrates a state in which the check valve integrated block is closed.
In one embodiment, the side of the valve core 2 close to the boss 113 comprises a tip part 23 with gradually decreasing size in the direction away from the valve cover 3. After the valve core 2 is installed in place, the side close to the boss 113 comprises a tip part 23, and the tip part 23 forms a sharp edge seal with the edge of the boss 113 close to the first channel 111 (the sealing position is illustrated in fig. 3). An embodiment of the present invention may provide that one end of the valve core 2 for forming a sealing end surface with the boss 113 is provided as the tip portion 23, wherein the cross-sectional area of the end surface of the tip portion 23 near the first passage 111 is smaller than the cross-sectional area of the first passage 111, so that the tip portion 23 forms a sharp edge seal with the edge of the boss 113 near the first passage 111.
In the above embodiment, the valve body 2 has the medium passage 24 penetrating through the end surface of the end away from the boss 113 in the longitudinal direction. For example, the medium passage 24 may be a straight hole-shaped passage disposed along the length direction of the valve core 2, and the closed end of the medium passage 24 in the length direction is used for abutting against the elastic member to limit the elastic displacement of the elastic member in the medium passage. The plurality of flow restriction holes 22 are radially arranged at a position of the valve core 2 close to the tip end portion 23, the plurality of flow restriction holes 22 can be symmetrically arranged relative to the medium passage 24, and the blow-off passage formed by the medium passage 24 and the flow restriction holes 22 can be further improved in the flow of the liquid medium by arranging the plurality of flow restriction holes 22. The flow restriction hole 22 is radially arranged at the tip portion 23, and when the blowing operation is started, gas enters the flow restriction hole 22 through a gap between the valve core 2 and the boss 113, is restricted by the flow restriction hole 22, enters the medium passage 24, and is blown out through the blow hole 31. Wherein the number of flow restriction ports 22 can be set according to the operational requirements of the blow-down system.
In the embodiment of the invention, the restricted orifices on different valve cores in one check valve integrated valve group can be the same, and the restricted orifices with different apertures can also be arranged according to the flow resistance and flow demand.
Further, the part of the valve core 2, which is far away from the flow restriction hole 22 and close to the valve cover 3, is abutted against the second channel 112, and can slide in the second channel 112 under the action of gas pressure or elastic force of the elastic element 4, so that the first channel 111 and the second channel 112 are communicated and sealed. Before the blow-off operation is started, the valve body 2 is pressed against the boss 113 by the elastic member 4 to form a seal, and when the blow-off operation is started, the gas pressure presses the elastic member 4 via the valve body 2, so that the valve body 2 slides in a direction away from the boss 113. Because the part of the valve core 2 close to the valve cover 3 is arranged in a butting way with the second channel 112, the gas can be limited from leaking out from the space between the outer wall of the valve core 2 and the inner wall of the second channel 112, and the gas is ensured to be blown out from the gas blowing hole 31 after passing through the flow limiting hole 22 and the medium channel.
With continued reference to fig. 1 and 2, in one embodiment, the diameter of the spool 2 from the position where the orifice 22 is provided to the end of the tip portion 23 is smaller than the diameter of the second passage 112, or the diameter of the spool 2 from the position where the orifice 22 is provided is smaller than the diameter of the second passage 112, and the diameter of the spool gradually decreases from the orifice 22 to the tip portion 23. By adopting the structure, on one hand, a gap is formed between the position of the valve core 2 provided with the flow limiting hole and the second channel 112, so that gas enters the flow limiting hole 22 after passing through the gap between the valve core 2 and the second channel 112, on the other hand, a buffer and storage space can be provided for the gas, the gas is prevented from directly impacting the flow limiting hole, and the service life of the valve core is prolonged.
In one embodiment, tip portion 23 is a tapered structure that decreases in size toward first passage 111 for forming a tapered and sharp-edged line seal circumferentially with boss 113 adjacent the inner edge of boss 113. The utility model discloses can set up tip portion 23 into the cone structure, the cone structure forms the line seal of conical surface and sharp limit each other circumferentially with the marginal position that is close to boss 113 of boss 113. For example, the small end is smaller than the inner diameter of the first channel 11, so that when the check valve integrated valve set is in a sealed state, the small end of the cone structure is located in the first channel 11, and the outer surface of the small end facing the valve cover 3 circumferentially forms a line seal with the edge of the boss 113, thereby improving the sealing effect.
That is, the edge of the boss 113 is of an annular structure, and after the front end of the cone part extends into the first channel 11, the periphery of the cone part around the axis of the cone part abuts against the annular structure formed by the edge, so that the two forms a conical surface-sharp edge seal to prevent the medium from passing through.
Further, the tip portion 23 is a tapered structure with a size decreasing toward the first passage 111, wherein the tapered structure may be a frustum structure, that is, the farthest end away from the elastic member is a table surface, which may increase the force-bearing area when the gas exerts the force on the valve core, so that the elastic member is more easily compressed, and the communication process of the check valve is easier.
In the above embodiment, the tip portion 23 may be a tapered structure with a size gradually decreasing toward the first channel 111, that is, the change curvature of the outer surface of the tip portion is regular and gradual, and the change of the flow rate and pressure of the gas on the outer surface of the tip portion can be reduced, so that the gas discharged through the check valve integrated valve set meets the requirements of the blowing system.
In one embodiment, a valve cover 3 is disposed on one end face of the valve body 1, and the blowing holes 31 are correspondingly disposed according to the number and positions of the branched ventilation flow passages disposed on one end face. For example, if two branch ventilation channels are provided on one end surface of the valve body, two blow holes need to be provided at corresponding positions of the valve cover. And after the valve core is assembled in place, the valve cover is covered to complete the assembly of the integrated valve group. In the gas blowing operation, the gas flowing through the two branch ventilation channels respectively passes through the corresponding valve cores and then is blown out from the corresponding gas blowing holes.
Or, the valve covers are correspondingly arranged on one end face of the valve body 1 according to the number of the branch air-vent channels, namely, each branch channel is independently provided with one valve cover, each valve cover is provided with one air-vent hole, and the valve covers are not connected with one another. The advantage of setting up the valve gap alone lies in, can directly change when certain valve gap damages, can not influence the use of other valve gaps.
Further, the position of the bonnet 3 where the blow hole 31 is provided is projected in a direction away from the valve body 2, and is in a nozzle shape. The specific shape of the protruding part of the blowing hole 31 in the shape of a nozzle can be set according to the blowing work requirement.
In the above embodiment, the elastic member 4 may be a spring, and the spring is disposed in the second channel 112 at a side close to the valve cap 3, wherein one end of the spring abuts against an end surface of the valve cap 3 facing the inside of the medium channel of the valve element 2, and the other end abuts against the valve cap 3, so that the spring can apply an acting force to the valve element 2 toward the first channel, and control the valve element 2 to close the first channel and the second channel. In order to ensure that the force application position of the spring is not deviated, any one of two ends of the spring can be fixedly connected with a mutually abutted component, for example, one end of the spring abutting against the valve core can be fixedly connected with the inner wall of the valve core medium channel, so as to ensure that the compression and extension directions of the spring are consistent with the preset direction.
Further, in order to prevent the spring from being wholly or partially pressed into the air blowing hole, for example, the diameter of the spring may be made larger than the diameter of the air blowing hole 31 provided in the valve cover 3, or one end of the spring abutting against the valve cover may be fixedly connected to the valve cover.
The embodiment of the utility model provides a pair of integrated valves of check valve for liquid rocket engine, through with a plurality of check valve cores integration in a valve body, and the work demand through each case sets up the restricted aperture in corresponding aperture in the case, and set up different air channel according to the difference of blowing off gaseous required pressure, can realize that the check valve integration with multiple blow off usage is a valves, make valves overall structure more simple compact, single valve body is many, the pipeline is many, area big scheduling problem, the layout space has been saved, be favorable to the miniaturized design of engine system.
The above embodiments of the present invention can be combined with each other, and have corresponding technical effects.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021552358.2U CN213332542U (en) | 2020-07-31 | 2020-07-31 | Check valve integrated valve set for liquid rocket engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021552358.2U CN213332542U (en) | 2020-07-31 | 2020-07-31 | Check valve integrated valve set for liquid rocket engine |
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| Publication Number | Publication Date |
|---|---|
| CN213332542U true CN213332542U (en) | 2021-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021552358.2U Active CN213332542U (en) | 2020-07-31 | 2020-07-31 | Check valve integrated valve set for liquid rocket engine |
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| CN (1) | CN213332542U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390556A (en) * | 2021-06-18 | 2021-09-14 | 湖南苍树航天科技有限公司 | Integrated one-way sweeping pressure measuring instrument |
| CN118517554A (en) * | 2024-07-23 | 2024-08-20 | 浙江龙禹阀门有限公司 | Check valve and check valve multi-pipeline flow control system |
-
2020
- 2020-07-31 CN CN202021552358.2U patent/CN213332542U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113390556A (en) * | 2021-06-18 | 2021-09-14 | 湖南苍树航天科技有限公司 | Integrated one-way sweeping pressure measuring instrument |
| CN118517554A (en) * | 2024-07-23 | 2024-08-20 | 浙江龙禹阀门有限公司 | Check valve and check valve multi-pipeline flow control system |
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