CN108869050A - Ultralow temperature band pooling feature piston makees dynamic formula high pressure valve - Google Patents
Ultralow temperature band pooling feature piston makees dynamic formula high pressure valve Download PDFInfo
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- CN108869050A CN108869050A CN201810996703.2A CN201810996703A CN108869050A CN 108869050 A CN108869050 A CN 108869050A CN 201810996703 A CN201810996703 A CN 201810996703A CN 108869050 A CN108869050 A CN 108869050A
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- valve
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- 238000011176 pooling Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 45
- 241001149930 Protura <class> Species 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 230000007246 mechanism Effects 0.000 abstract description 10
- 238000005457 optimization Methods 0.000 abstract description 2
- 239000000306 component Substances 0.000 description 16
- 230000000694 effects Effects 0.000 description 13
- 238000010586 diagram Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 238000013461 design Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 6
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000013016 damping Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 229910000851 Alloy steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000010146 3D printing Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000035772 mutation Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 210000000664 rectum Anatomy 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02C—GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS
- F02C7/00—Features, components parts, details or accessories, not provided for in, or of interest apart form groups F02C1/00 - F02C6/00; Air intakes for jet-propulsion plants
- F02C7/22—Fuel supply systems
- F02C7/232—Fuel valves; Draining valves or systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details Of Valves (AREA)
Abstract
A kind of ultralow temperature band pooling feature piston actuation high pressure valve, including entrance multilayer shell component and outlet housing component；Outlet housing component includes outlet housing etc.；Outlet housing is structure as a whole, including shell, guide cylinder, and shell is stretched out in syphon shape, guide cylinder one end from shell one end port, and the other end is stretched out from the barrel at shell turning；Leakage hole leads to shell exterior from guide cylinder side wall, blows down mouth and is located on shell barrel, corresponding with shell other end port；Piston rod is mounted in guide cylinder, and control chamber cover board is mounted on one end that guide cylinder stretches out shell barrel, is provided with control mouth at control chamber cover plate central；Second auxiliary spring is installed on the piston rod；Outlet housing is connected with entrance multilayer shell port, and guide cylinder is inserted into main valve.The matching optimization of flow resistance loss under valve actuation mechanism and leakproofness, big flow can be achieved in the present invention, meets high operating condition and multiple reusable needs.
Description
Technical field
The present invention relates to a kind of pistons to make dynamic formula high pressure valve.
Background technique
In the case where valve mechanism size is little, operating pressure is not high, domestic previous liquid engine Subzero valve is general
Gas and cryogenic media are controlled all over using the isolation of bellows effort formation, and realizes dynamic sealing function.And it is inclined in valve mechanism size
Greatly, under the higher operating condition of operating pressure, bellows design, molding difficulty increase, and cost is high, and the production stream of bellows component
Journey is complicated, the period is very long, continues that bellows actuation pattern is selected to be difficult to adapt to oxyhydrogen engine valve research demand, and selects knot
The more simple piston actuation form of structure.
To make valve close reliable and protecting structural member injury-free, usually given afterwards to a certain extent in pressure medium reduction
Valve assigns out code.Valve is set to make it reliable under the specified maximum pressure of main and buffer-type closing at a slow speed, with protection
Structural member, non-metallic seal simultaneously generate impact of the surge pressure to valve pipeline when preventing main from closing, with existing valve
Technology is difficult to meet above-mentioned requirements.
Summary of the invention
The technical problem to be solved by the present invention is to：Overcome the deficiencies in the prior art, the present invention provide a kind of big stream of ultralow temperature
Piston of the amount with pooling feature makees dynamic formula high pressure valve, is suitable for about 23MPa elevated pressures, ultralow temperature medium (liquid oxygen or liquid nitrogen
90K/76K), super-flow about 390kg/s (liquid oxygen medium), the flow resistance loss no more than 1MPa, and have anti-in opening-closing process
The buffer gear of surge pressure and the nonmetallic sealing surface of protection is only closed, it can be achieved that valve actuation mechanism and leakproofness, big flow
The matching optimization of lower flow resistance loss meets high operating condition and multiple reusable needs.
The technical scheme adopted by the invention is that：A kind of ultralow temperature band pooling feature piston actuation high pressure valve, including enter
Mouth multilayer shell component and outlet housing component；
Outlet housing component includes outlet housing, control chamber cover board, piston rod, the second auxiliary spring；
Outlet housing is structure as a whole, including shell, guide cylinder, and shell is in syphon shape, and guide cylinder one end is from shell one end
Port is stretched out, and the other end is stretched out from the barrel at shell turning, and one end diameter that guide cylinder is stretched out from shell barrel is greater than from outer
The diameter of shell port extension end；Leakage hole leads to shell exterior from guide cylinder side wall, blows down mouth and is located on shell barrel, and outer
Shell other end port is corresponding；
Piston rod is mounted in guide cylinder, and control chamber cover board is mounted on one end that guide cylinder stretches out shell barrel, control chamber
Control mouth is provided at cover plate central, piston rod cooperatively forms dynamic sealing knot close to one end of control chamber cover board and guide cylinder inner wall
Structure, the stroke that guide cylinder passes through the first step structure control piston rod big end of inner wall；
Second auxiliary spring is installed on the piston rod, positioned at the step structure of piston rod outer wall and second of guide cylinder inner wall
Between stage structure；Outlet housing is connected with entrance multilayer shell port, and guide cylinder is inserted into main valve.
The outlet housing component further includes the first sealing ring, the second sealing ring, is pacified between piston rod and guide cylinder inner wall
The first sealing ring is filled, piston rod is sealed between one end that guide cylinder stretches out and guide cylinder by the second sealing ring, and formation is moved close
Envelope.
The step surface of the piston rod outer wall is embedded in nonmetallic sealing ring, and guide cylinder passes through first step structural ledge face
On annular protrusion structure matched with the nonmetallic sealing ring of piston rod, formed redundant seal structure.
The value range for one end diameter that the guide cylinder is stretched out from shell barrel is 90mm-100mm, is stretched from outer cover port
The value range of one end diameter out is 50mm-60mm；Guide cylinder one end from outer cover port stretch out 60mm-70mm, the other end from
The barrel at shell turning stretches out 60mm-80mm.
The value range for one end port diameter that the outlet housing is connected with entrance multilayer shell is 190mm-210mm,
The value range of the diameter of other end port is 120mm-150mm.
The entrance multilayer shell component includes：Entrance multilayer shell, main valve, main valve seat, main spring, secondary valve, pair
Spring and pin；Wherein,
Entrance multilayer shell includes：Housing exterior walls, deflection cone, main valve guide wall, secondary guide wall and several gussets；Its
In,
The housing exterior walls are connected by several gussets with the deflection cone；
The deflection cone is located inside the housing exterior walls；
Several gussets are uniformly distributed along the circumferential direction of the housing exterior walls；
One end of the main valve guide wall is connected with the inner wall of deflection cone；
One end of the pair guide wall is connected with the inner wall of the deflection cone, and the secondary guide wall is located at the master
The inside of valve guide wall；
The main valve includes sealing, main guide part and secondary guide part；Wherein, the sealing, the main guide part
It is integrally formed with the secondary guide part；
The pair valve is embedded at the inside of the secondary guide part, and the auxiliary spring is sheathed on one end of the secondary valve；
The pair guide part offers limit hole, and the pin is arranged in the secondary valve and is stuck in the limit hole；
One end of the pair guide part is embedded at the secondary guide wall；
The main guide part is embedded at the main valve guide wall；
The main spring is sheathed on the main valve guide wall, and one end of the main spring is affixed with the spring support seat
It closes, the other end of the main spring and the side wall of the sealing fit；
The main valve seat is threadedly coupled with the housing exterior walls, and the main valve seat fits with the sealing.
The axis of the housing exterior walls, the axis of the deflection cone, the axis of the main valve guide wall and the pair are led
It is overlapped to the axis of wall.
The appearance profile of the deflection cone is class parabola.
The inner wall of the deflection cone is provided with spring support seat, one end of the main valve guide wall and the spring supporting
Seat is connected.
The inner wall of the deflection cone is provided with secondary valve base, and the conehead of the deflection cone offers the through-hole along axis.
The advantages of the present invention over the prior art are that：
(1) present invention uses split type package assembly, and assembly process process is good, and it is preferable can to repair testability.It is suitable for
Supply or cutting liquid oxygen medium flow into engine chamber, and a kind of piston with pooling feature makees dynamic formula ultralow temperature high pressure valve
Door.It can be applied to the high-tech areas such as space flight cryogenic liquid power.
(2) entire valve mechanism of the invention is compact, deft design, and core spare part is located at valve body center, can be with
It realizes high pressure, the flowing of the axial-flow type of ultralow temperature medium, reaches the allocation optimum between valve actuation mechanism and flow resistance, core manipulation
Mechanism is placed in housing cavity, dramatically reduces the dimensional weight of entire product, and is able to satisfy high operating condition and is repeated several times reliable
The needs used.
(3) present invention setting it is slow opens, slow shutting mechanism, characteristic can not be pressed using medium, in the case of not increasing independent spare part
Realize that main valve moves pooling feature, air to close closes main valve even if valve removes control under declared working condition, by delaying shutting mechanism
Effect makes its main valve reliable and buffer-type closing at a slow speed under the specified maximum pressure of main, to protect structural member, nonmetallic close
Sealing simultaneously generates impact of the surge pressure to valve pipeline when preventing main from closing, and improves the functional reliability of related spare part.
(4) present invention is piston effort formation, and compared with ripple pipe moving seal, advantage is that structure is not limited simply by stroke
System, the process-cycle is short, the disadvantage is that cannot reach zero leakage magnitude as bellows movable sealing structure, therefore strict control manipulates
The slip of gas medium is very crucial.In outlet housing component, guide cylinder is stretched out in except shell, is avoided and ultralow temperature
Physical contact between media improves the temperature range at guiding, provides good temperature environment for piston movable sealing structure, prevent temperature
Spend that low control gas leak rate is excessive to cause Reliability of Microprocessor to reduce.In addition, the nonmetallic sealing ring of piston rod passes through with guide cylinder
The sealing pair that annular protrusion structure is formed matches, and forms redundant seal structure, can further control the leakage rate of control gas.I.e.
Just the part manipulation gas that tiny leakage is gone out can also be drawn out in external environment by the leakage hole L in outlet housing, it is ensured that valve
It is safe and reliable.
(5) entrance multilayer shell of the invention, outlet housing are high temperature alloy Steel material, and the number of plies is more, construction is complicated, total
Body size is larger, uses novel advanced 3D printing technological forming technology, realizes the innovation of large complicated Shell Manufacture
Using greatly improving production efficiency.
Detailed description of the invention
Fig. 1 is high pressure valve structural schematic diagram of the invention.
Fig. 2 is high pressure valve course of work schematic diagram of the invention.
Fig. 3 is outlet housing component structure diagram of the invention.
Fig. 4 is outlet housing structural schematic diagram of the invention.
Fig. 5 is secondary valve opening state schematic diagram of the invention.
Fig. 6 is secondary valve closed mode schematic diagram of the invention.
Fig. 7 is buffer-type main valve seat structural schematic diagram of the invention.
Fig. 8 is entrance multilayer shell component structure diagram of the invention.
Fig. 9 is entrance multilayer shell cross-sectional view of the invention.
Figure 10 is entrance multilayer shell shaft side figure of the invention.
Specific embodiment
The present invention is described in detail with reference to the accompanying drawings and examples.
As shown in Figure 1, a kind of ultralow temperature band pooling feature piston actuation high pressure valve, including entrance multilayer shell component 3
With 6 two large divisions of outlet housing component, connection and static seal are kept by screw thread and aluminium backing therebetween.Whole valve is using seperated
Formula assembling guarantees static seal reliability under low temperature by welding after two components room temperature fills trial assembly examination qualification.
As shown in figure 9, entrance multilayer shell 13 includes：Housing exterior walls 131, deflection cone 132, main valve guide wall 133, pair
Guide wall 134 and several gussets 1311.Wherein, housing exterior walls 131 are connected by several gussets 1311 with deflection cone 132
It connects.When it is implemented, what housing exterior walls 131, several gussets 1311 and deflection cone 132 were integrally formed.Deflection cone 132 is located at
Inside housing exterior walls 131.When it is implemented, deflection cone 132 is located inside housing exterior walls 131, the axis of housing exterior walls 131 and lead
The axis of flow cone 132 coincides, and there are spaces between deflection cone 132 and housing exterior walls 131 for liquid medium circulation.Several
Gusset 1311 is circumferentially distributed along housing exterior walls 131.When it is implemented, circumferential direction of several gussets 1311 along housing exterior walls 131
It is uniformly distributed.
One end of main valve guide wall 133 is connected with the inner wall of deflection cone 132.When it is implemented, main valve guide wall
133 right end is connected with the inner wall of deflection cone 132, is integrally formed.
One end of secondary guide wall 134 is connected with the inner wall of deflection cone 132, and secondary guide wall 134 is led positioned at main valve
To the inside of wall 133.When it is implemented, the right end of secondary guide wall 134 is connected with the inner wall of deflection cone 132, also it is integrated into
Type, and secondary guide wall 134 is located at the inside of main valve guide wall 133.The axis of deflection cone 132, main valve guide wall 133
Axis and the axis of secondary guide wall 134 be overlapped.
The present embodiment is reached by several gussets to be connect deflection cone with housing exterior walls and keeps multilayer shell integrated
Effect improves structural compactness, reduces spare part quantity, improves whole valve designed reliability.
In above-described embodiment, the appearance profile of deflection cone 132 is class parabola.The present embodiment reaches stable by deflection cone
Flow field flows cryogenic media axial-flow type, reduces the effect of flow resistance loss.
In above-described embodiment, housing exterior walls 131, deflection cone 132, main valve guide wall 133, secondary guide wall 134 and several
The material of a gusset 1311 is high-temperature alloy steel, improves shell bearing capacity to reach, reduces wall thickness effect, improves molding
Craftsmanship simultaneously reduces case weight.
In above-described embodiment, as shown in figure 9, the inner wall of deflection cone 132 is provided with spring support seat 1310, main valve guiding
One end of wall 133 is connected with spring support seat 1310.When it is implemented, the spring support seat that the inner wall of deflection cone 132 is arranged
1310 be circular planes, for compressing with 1 phase of main spring illustrated below.The right end and spring supporting of main valve guide wall 133
Seat 1310 is connected.
In above-described embodiment, as shown in figure 9, the inner wall of deflection cone 132 is provided with secondary valve base 137, the cone of deflection cone 132
Head offers the through-hole 21 along axis.It, can be with when it is implemented, the secondary valve base 137 that is arranged of the inner wall of deflection cone 132 is inclined-plane
For compressing with 7 phase of secondary valve illustrated below, 21 cryogenic media of through-hole opened up from the conehead of deflection cone 132 can be flowed into
The inside of secondary guide wall 134.
In above-described embodiment, main valve guide wall 133 is cylindrical shape, internal diameter 60mm-75mm.Secondary guide wall 134
For cylindrical shape, internal diameter 25mm-30mm.
In above-described embodiment, the diameter of the Single port of housing exterior walls 131 is 120mm-150mm, housing exterior walls 131 it is another
The diameter of port is 200mm-250mm.When it is implemented, the diameter of the right output port of housing exterior walls 131 is 120mm-150mm, shell
The diameter of the left port of external wall 131 is 200mm-250mm.The shape of housing exterior walls 131 is half of swelling-waist shape, so that
Housing exterior walls can cooperate well with water conservancy diversion vertebra, reduce resistance.
In above-described embodiment, put down as shown in figure 9, the body portion of deflection cone 132 is provided with several first pressures along its circumferential direction
Weighing apparatus hole 22.Be provided with after the main valve illustrated below that several first pressure balance holes 22 make opens, cryogenic media smoothly into
Enter 132 inner cavity of deflection cone, makes main valve internal and external pressure balance (preventing from forming big pressure difference influence main valve separation), and can reach
The purpose for being sufficiently displaced from and being pre-chilled.
Main valve guide wall 133 is provided with several second pressure balance holes 32 along its circumferential direction.Be provided with several second
Pressure compensation opening 32 can smoothly enter into cryogenic liquid medium and be filled with the slow open region in inside of main valve guide wall 133, also,
Main valve can cover second pressure balance hole 32 after moving certain stroke, reach the liquid medium in slow open region from flowing out as early as possible
To fluid damping effect.
As shown in Figure 10, the shape for present embodiments providing entrance multilayer shell 13 is half waist drum like structure, and cross section is
Multi-layer annular；It is followed successively by housing exterior walls 131, deflection cone 132, main valve guide wall 133, secondary guide wall 134 from outside to inside, one
Four-layer structure altogether.Internal three-decker, which is integral, to be passed through 4 pieces of gussets 1311 with housing exterior walls 131 and connect, and integrally at
Type.Essential core components are placed in enclosure interior, can reduce axial dimension and spare part quantity.Main valve guide wall 133 and pair
It is buffer area 136 between guide wall 134.
Housing exterior walls 131 undertake the receiving high voltage functionality of shell, keep shell and are not destroyed by high-pressure medium.In addition, shell
The wide mouth end (left end in Fig. 9) of outer wall is inside and outside double thread structure, first is that connection function is undertaken, second is that providing branch for main valve seat
Support.The advantages of design, is that reducing flange arrangement mitigates case weight, can also be more convenient to reprocess main valve seat, can tie up
Repairing property is good, high reliablity.
The main thoroughfare between housing exterior walls 131 and deflection cone 132 being medium is airflow design, and entrance sets deflection cone,
Runner each section of anchor ring product is essentially identical and is greater than entrance latus rectum, can steady flow condition effect to reduce flow resistance loss.
The material of the entrance multilayer shell 13 of the present embodiment is high-strength high-temperature steel alloy, using the molding of whole essence casting or powder
The novel advanced technologies molding manufacture such as last metallurgy, 3D printing, realizes multilayer complex casing high intensity, lightweight, precision, reliability
Design.
The present invention is not increasing independent spare part realization fluid damping effect by the way that slow opening apparatus is arranged, and protects each structural member
It is not hit.Wherein, slow opening apparatus includes that main valve 4, secondary valve 7, auxiliary spring 9 and pin 8, main valve 4 cooperate main valve to lead
It is moved to wall 133, secondary 7 matching pair guide wall 134 of valve movement.
As shown in figure 8, entrance multilayer shell component 3 includes entrance multilayer shell 13, main valve 4, main valve seat 5, main spring
1, secondary valve 7, auxiliary spring 9 and pin 8.Wherein, the specific implementation process of entrance multilayer shell 13 is referring to above description, originally
Details are not described herein for embodiment.
Main valve 4 includes sealing 410, main guide part 420 and secondary guide part 430；Wherein, sealing 410, main guide part
420 are integrally formed with secondary guide part 430；Secondary valve 7 is embedded at the inside of secondary guide part 430, and auxiliary spring 9 is sheathed on secondary valve 7
One end；Secondary guide part 430 offers limit hole 440, and pin 8 is arranged in secondary valve 7 and is stuck in limit hole 440；Secondary guide part
430 one end is embedded at secondary guide wall 134；Main guide part 420 is embedded at main valve guide wall 133；Main spring 1 is sheathed on main work
Door guide wall 133, one end and the spring support seat 1310 of main spring 1 fit, the other end and the sealing 410 of main spring 1
Side wall fits；Main valve seat 5 is threadedly coupled with housing exterior walls 131, and main valve seat 5 fits with sealing 410.
As shown in figure 3, outlet housing component 6 includes outlet housing 15, control chamber cover board 14, the secondary bullet of piston rod 10, second
Spring 11, the first sealing ring 12, the second sealing ring 2；As shown in figure 4, outlet housing 15 is structure as a whole, including shell 151, guiding
Cylinder 152, the L-shaped syphon shape of shell 151,152 one end of guide cylinder are stretched out from 151 one end port of shell, and the other end is from 151 turns of shell
The barrel of crook stretches out, and guide cylinder 152 is greater than the diameter from 151 port extension end of shell from 151 barrel extension end diameter of shell；
Leakage hole is led to outside shell 151 from 152 side wall of guide cylinder, is blown down mouth and is located on 151 barrel of shell, another with shell 151
Hold port corresponding；Piston rod 10 is mounted in guide cylinder 152, and control chamber cover board 14 is mounted on guide cylinder 152 and stretches out 151, shell
One end of wall is provided with control mouth, the one end and guide cylinder of piston rod 10 close to control chamber cover board 14 at 14 center of control chamber cover board
152 inner walls cooperatively form movable sealing structure, install the first sealing ring 12, guide cylinder between 152 inner wall of piston rod 10 and guide cylinder
152 control the stroke of 10 big end of piston rod by the first step structure 1521 of inner wall；Second auxiliary spring 11 is mounted on piston rod
On 10, between the second step structure 1522 of 152 inner wall of step structure and guide cylinder of 10 outer wall of piston rod；First step
Structure 1521 is close to 152 big end of guide cylinder, and second step structure 1522 is close to 152 small end of guide cylinder；Piston rod 10 is from guide cylinder
It is sealed between 152 one end stretched out and guide cylinder 152 by the second sealing ring 2, forms dynamic sealing；Outlet housing 15 and entrance shell
13 port of body is connected, and guide cylinder 152 is inserted into the main guide part 420 of main valve 4.The step surface of 10 outer wall of piston rod is embedded in non-
Metallic packing ring, guide cylinder 152 are matched by annular protrusion structure with the nonmetallic sealing ring of piston rod 10, and it is close to form redundancy
Seal structure.
Guide cylinder 152 from the value range of 151 barrel extension end diameter of shell be 90mm-100mm, from 151 port of shell
The value range of the diameter of extension end is 50mm-60mm.
The value range of the diameter of 15 Single port of outlet housing (outlet B) is 120mm-150mm, with entrance multilayer shell 13
The value range of the port diameter of connection is 190mm-210mm；60mm- is stretched out from 151 port of shell in 152 one end of guide cylinder
70mm, the other end stretch out 60mm-80mm from the barrel at 151 turning of shell.
Entrance multilayer shell 13 sets deflection cone, and medium channel and 4 type face of main valve are airflow design, can steady flow condition
Prevent medium flow direction from generating mutation, each section of annulus area of medium channel is not less than entrance drift diameter area and substantially suitable, above-mentioned to set
Flow resistance loss can be greatly reduced in meter.
Valve assembled state is that main valve 4 is normally closed, and main valve 4 is pressed in main valve seat 5 under the effect of 1 pretightning force of main spring
On.
Working principle：
As shown in Fig. 2, obstructed control gas in control chamber, low-pressure liquid oxygen medium enters entrance from entrance A when engine is pre-chilled
Multilayered shell body cavity, main valve 4 is pressed on main valve seat 5 by when pre-cooling under 1 assembly force collective effect of medium power and main spring to be guaranteed
The sealing of main valve 4.At this point, secondary valve 7 be in open position (as shown in Figure 5), when pre-cooling, ensures cryogenic media into being used for main work
Valve body simultaneously is pre-chilled sufficiently in the slow cavity (cavity between main valve 4 and entrance multilayer shell 13) for opening effect of door 4.
After pre-cooling, when engine sending instruction needs valve opening, actuation chamber high voltage control is passed through from control mouth K
Gas pushes piston rod 10 and overcomes main spring 1,11 compressing force of the second auxiliary spring and medium differential pressure power to opening 4 direction of main valve
Movement.Structural member bears to generate excessive impact stress when to avoid main valve 4 from opening in place, causes each structural member to damage, valve
It is designed provided with slow opening structure：Secondary valve 7 is coupled by pin 8 with main valve 4, and has certain axial activity space, passes through pair
9 pretightning force of spring resists secondary valve 7 to right positions, and can move together with main valve 4, and secondary 7 stroke of valve is less than main valve 4
Right end aperture is sealed (as shown in Figure 6) after secondary valve 7 reaches small valve seat 15 of entrance multilayer shell 13 at first by stroke, this
When main valve 4 there are also a bit of stroke continuation promote to the right.Due to being formed between main valve 4 and the 3rd layer of entrance multilayer shell 13
Cavity (as shown in the area Tu2Zhong C) in liquid oxygen medium can only be squeezed out by annular gap between the two, annular space area is smaller, borrows
Characteristic can not be pressed by helping liquid, serve as certain damping, increase the opening time of 4 remainder stroke of main valve,
Reach slow and opened effect, each structural member is protected by greater impact power, not improve valve use reliability.
After engine enters declared working condition, valve enters high pressure, big flow working condition, controls gas at this time and keeps, main work
Door 4 maintains full-gear.
When engine issues out code, valve is still in high pressure conditions at this time, by removing control gas, main valve 4
It is closed under main spring 1 and medium collective effect.To avoid valve high pressure from generating excessive surge pressure peak to valve zero when closing
Component and system pipeline cause big impact, and slow pass function is devised on valve mechanism：During beginning to shut off, main valve 4
Larger with 6 extension gap of outlet housing component, when nearly closing on earth, this gap becomes smaller, inner volume (D in such as Fig. 2
Shown in area) low-temperature liquid oxygen medium can not press and can only be squeezed out by this annular gap, to realize the slow pass function of main valve 4.
The slow structure design of closing of the valve by itself liquid medium completely by that can not press characteristic to realize, without increasing extra damping piece,
Do not increase system resistance, valve reliability also can be improved.
Since operating condition at this time is still higher when main valve 4 is closed, the nonmetallic sealing of valve can be adopted beyond the allowable than pressure of material
It is not subject to crushing under this operating condition with the 5 design protection main valve of main valve seat of buffer-type is nonmetallic：Two pass metal seat valve is designed, outside
The metal valve seat surface 51 of side is more slightly lower than inner metal valve seat 52, and (difference in height Δ passes through when calculating is nonmetallic to be pressed by ratio allowable
Deflection determines), when the nonmetallic seal pressure of main valve reaches close to allowable than pressure, outside metal valve seat surface 51 and main valve
4 metals are run into, nonmetallic to main valve to play buffer protection function.Schematic diagram is as shown in Figure 7.
Valve actuation cavity segment is provided with leakage hole, the control gas and mandril dynamic sealing that can go out actuating plunger partial compromise
The cryogenic media of place's leakage is released together to the external world.
Unspecified part of the present invention belongs to technology well known to those skilled in the art.
Claims (10)
1. a kind of ultralow temperature band pooling feature piston actuation high pressure valve, which is characterized in that including entrance multilayer shell component (3)
With outlet housing component (6)；
Outlet housing component (6) includes outlet housing (15), control chamber cover board (14), piston rod (10), the second auxiliary spring (11)；
Outlet housing (15) is structure as a whole, including shell (151), guide cylinder (152), and shell (151) is in syphon shape, guide cylinder
(152) one end is stretched out from shell (151) one end port, and the other end is stretched out from the barrel at shell (151) turning, guide cylinder
(152) one end diameter stretched out from shell (151) barrel is greater than the diameter from shell (151) port extension end；Leakage hole is from leading
Shell (151) outside is led to cylinder (152) side wall, mouth is blown down and is located on shell (151) barrel, with shell (151) other end
Port is corresponding；
Piston rod (10) is mounted in guide cylinder (152), and control chamber cover board (14) is mounted on guide cylinder (152) and stretches out shell
(151) one end of barrel is provided with control mouth at control chamber cover board (14) center, and piston rod (10) is close to control chamber cover board (14)
One end and guide cylinder (152) inner wall cooperatively form movable sealing structure, and guide cylinder (152) passes through the first step structure of inner wall
(1521) stroke of piston rod (10) big end is controlled；
Second auxiliary spring (11) is mounted on piston rod (10), is located at the step structure and guide cylinder of piston rod (10) outer wall
(152) between the second step structure (1522) of inner wall；Outlet housing (15) is connected with entrance multilayer shell (13) port, guiding
In cylinder (152) insertion main valve (4).
2. a kind of ultralow temperature band pooling feature piston actuation high pressure valve according to claim 1, it is characterised in that：It is described
Outlet housing component (6) further includes the first sealing ring (12), the second sealing ring (2), piston rod (10) and guide cylinder (152) inner wall
Between install the first sealing ring (12), piston rod (10) passes through between one end that guide cylinder (152) stretches out and guide cylinder (152)
Second sealing ring (2) sealing, forms dynamic sealing.
3. a kind of ultralow temperature band pooling feature piston actuation high pressure valve according to claim 1 or 2, it is characterised in that：
The step surface of piston rod (10) outer wall is embedded in nonmetallic sealing ring, and guide cylinder (152) passes through first step structure
(1521) the annular protrusion structure on step surface is matched with the nonmetallic sealing ring of piston rod (10), forms redundant seal knot
Structure.
4. a kind of ultralow temperature band pooling feature piston actuation high pressure valve according to claim 3, it is characterised in that：It is described
The value range for one end diameter that guide cylinder (152) is stretched out from shell (151) barrel is 90mm-100mm, is held from shell (151)
The value range for one end diameter that mouth stretches out is 50mm-60mm；60mm- is stretched out from shell (151) port in guide cylinder (152) one end
70mm, the other end stretch out 60mm-80mm from the barrel at shell (151) turning.
5. a kind of ultralow temperature band pooling feature piston actuation high pressure valve according to claim 4, it is characterised in that：It is described
The value range for one end port diameter that outlet housing (15) is connected with entrance multilayer shell (13) is 190mm-210mm, another
The value range for holding the diameter of port is 120mm-150mm.
6. a kind of ultralow temperature band pooling feature piston actuation high pressure valve according to claim 1, it is characterised in that：It is described
Entrance multilayer shell component (6) includes：Entrance multilayer shell (13), main valve (4), main valve seat (5), main spring (1), secondary valve
(7), auxiliary spring (9) and pin (8)；Wherein,
Entrance multilayer shell (13) includes：Housing exterior walls (131), deflection cone (132), main valve guide wall (133), secondary guide wall
(134) and several gussets (1311)；Wherein,
The housing exterior walls (131) are connected by several gussets (1311) with the deflection cone (132)；
It is internal that the deflection cone (132) is located at the housing exterior walls (131)；
Several gussets (1311) are uniformly distributed along the circumferential direction of the housing exterior walls (131)；
One end of the main valve guide wall (133) is connected with the inner wall of deflection cone (132)；
One end of the pair guide wall (134) is connected with the inner wall of the deflection cone (132), and the secondary guide wall
(134) it is located at the inside of the main valve guide wall (133)；
The main valve (4) includes sealing (410), main guide part (420) and secondary guide part (430)；Wherein, the sealing
(410), the main guide part (420) and the secondary guide part (430) are integrally formed；
The pair valve (7) is embedded at the inside of the secondary guide part (430), and the auxiliary spring (9) is sheathed on the secondary valve
(7) one end；
The pair guide part (430) offers limit hole (440), and the pin (8) is arranged in the secondary valve (7) and is stuck in institute
State limit hole (440)；
One end of the pair guide part (430) is embedded at the secondary guide wall (134)；
The main guide part (420) is embedded at the main valve guide wall (133)；
The main spring (1) is sheathed on the main valve guide wall (133), one end of the main spring (1) and the spring branch
Support seat (1310) fits, and the side wall of the other end and the sealing (410) of the main spring (1) fits；
The main valve seat (5) is threadedly coupled with the housing exterior walls (131), the main valve seat (5) and the sealing (410) phase
Fitting.
7. a kind of ultralow temperature band pooling feature piston actuation high pressure valve according to claim 6, it is characterised in that：It is described
The axis of housing exterior walls (131), the axis of the deflection cone (132), the axis of the main valve guide wall (133) and the pair
The axis of guide wall (134) is overlapped.
8. a kind of ultralow temperature band pooling feature piston actuation high pressure valve according to claim 6, it is characterised in that：It is described
The appearance profile of deflection cone (132) is class parabola.
9. a kind of ultralow temperature band pooling feature piston actuation high pressure valve according to claim 6, it is characterised in that：It is described
The inner wall of deflection cone (132) is provided with spring support seat (1310), one end of the main valve guide wall (133) and the spring
Support base (1310) is connected.
10. a kind of ultralow temperature band pooling feature piston actuation high pressure valve according to claim 6, it is characterised in that：Institute
The inner wall for stating deflection cone (132) is provided with secondary valve base (137), and the conehead of the deflection cone (132) is offered along the logical of axis
Hole (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810996703.2A CN108869050A (en) | 2018-08-29 | 2018-08-29 | Ultralow temperature band pooling feature piston makees dynamic formula high pressure valve |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810996703.2A CN108869050A (en) | 2018-08-29 | 2018-08-29 | Ultralow temperature band pooling feature piston makees dynamic formula high pressure valve |
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| Publication Number | Publication Date |
|---|---|
| CN108869050A true CN108869050A (en) | 2018-11-23 |
Family
ID=64322172
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810996703.2A Pending CN108869050A (en) | 2018-08-29 | 2018-08-29 | Ultralow temperature band pooling feature piston makees dynamic formula high pressure valve |
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| CN (1) | CN108869050A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109850167A (en) * | 2019-03-13 | 2019-06-07 | 北京空天技术研究所 | A kind of two-way oil valve and its design method |
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| US5215116A (en) * | 1989-05-19 | 1993-06-01 | Richard Voss Grubenausbau Gmbh | Pressure-relief valve with stepped or double piston |
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