CN110332347A - A kind of pressure-control valve in liquefied ammonia hydrogen generating system - Google Patents
A kind of pressure-control valve in liquefied ammonia hydrogen generating system Download PDFInfo
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- CN110332347A CN110332347A CN201910641372.5A CN201910641372A CN110332347A CN 110332347 A CN110332347 A CN 110332347A CN 201910641372 A CN201910641372 A CN 201910641372A CN 110332347 A CN110332347 A CN 110332347A
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- chamber
- valve
- control
- cushion chamber
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 title claims abstract description 111
- 229910021529 ammonia Inorganic materials 0.000 title claims abstract description 53
- 239000001257 hydrogen Substances 0.000 title claims abstract description 23
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 23
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 230000008676 import Effects 0.000 claims abstract description 17
- 230000003139 buffering effect Effects 0.000 claims description 6
- 239000010720 hydraulic oil Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims 1
- 230000008859 change Effects 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000005329 float glass Substances 0.000 abstract description 2
- 238000002360 preparation method Methods 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000003860 storage Methods 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 230000006837 decompression Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- 238000006124 Pilkington process Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000004209 hair Anatomy 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/20—Excess-flow valves
- F16K17/22—Excess-flow valves actuated by the difference of pressure between two places in the flow line
- F16K17/24—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member
- F16K17/28—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only
- F16K17/30—Excess-flow valves actuated by the difference of pressure between two places in the flow line acting directly on the cutting-off member operating in one direction only spring-loaded
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K47/00—Means in valves for absorbing fluid energy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Control Of Fluid Pressure (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The present invention provides the pressure-control valves in a kind of liquefied ammonia hydrogen generating system, belong to float glass preparation technical field.Pressure-control valve includes valve body, inlet and outlet, control chamber is provided in valve body, compensated cavity, first cushion chamber and the second cushion chamber, a main valve stem is slidably connected in control chamber, control chamber is communicated with import, column valve bar is also plugged in compensated cavity simultaneously, in first cushion chamber and the second cushion chamber, a control piston is fixedly installed on auxiliary valve rod, the first tension spring under tensional state is connected between control piston and main valve stem, the second tension spring under tensional state is provided between control piston and valve body, the coefficient of elasticity of first tension spring is greater than the coefficient of elasticity of the second tension spring.The present invention has many advantages, such as to can compensate for pressure change, so that outlet pressure is tended to be steady constant.
Description
Technical field
The invention belongs to float glass preparation technical field, a kind of be related in liquefied ammonia hydrogen generating system pressure-control valve.
Background technique
In float glass process, inertia or weak reducing atmosphere in molten tin bath are kept using hydrogen, maintains molten tin bath internal pressure
Power, oxygen is contacted with tin in air-isolation at high temperature, in case metallic tin is oxidized.The hydrogen manufacturing that enterprise generally selects cost performance high
Device has device for preparing hydrogen or device for producing hydrogen by ammonia decomposition to obtain enough hydrogen, introduces preparing hydrogen by ammonia decomposition system herein
The problem and solution when operation.
Outsourcing liquefied ammonia is transported by tank car to our company, is discharged into ammonia tank and is concentrated storage, since liquefied ammonia pressure tank is much higher than ammonia
The operating pressure of decomposing hydrogen-production system ammonia destruction furnace, so liquefied ammonia will be supplied to ammonia destruction furnace again after pressure reducing valve depressurizes, and
It is required that the ammonia pressure after decompression is steadily without fluctuation.
Summary of the invention
In view of the above problems existing in the prior art, the purpose of the present invention is to provide a kind of liquefied ammonia hydrogen generating system, this hairs
It is bright the technical problem to be solved is that how to make outlet pressure keep it is relatively steady so that the variation of inlet pressure it is influenced compared with
It is small.
Object of the invention can be realized by the following technical scheme: the pressure-control valve in a kind of liquefied ammonia hydrogen generating system,
It is characterized in that, this pressure-control valve includes valve body, inlet and outlet, control chamber, compensated cavity, first are provided in the valve body
Cushion chamber and the second cushion chamber slidably connect a main valve stem in the control chamber, and the control chamber is communicated with import, the column
Valve rod is also plugged in compensated cavity, the first cushion chamber and the second cushion chamber simultaneously, by overflowing between the control chamber and compensated cavity
Discharge orifice communicates, and the cross-sectional sizes of the intercommunication between compensated cavity and the first cushion chamber can be limited by being fixedly installed on the main valve stem
It is big to be fixedly installed the intercommunication section that can be limited between the first cushion chamber and the second cushion chamber on the main valve stem for first block
The second small block, the outlet are communicated with the second cushion chamber, and the auxiliary coaxial with main valve stem is slidably connected on the valve body
Valve rod is fixedly installed a control piston on the auxiliary valve rod, is connected between control piston and the main valve stem in drawing
The first tension spring under state is stretched, is provided with the second tension spring under tensional state between control piston and the valve body, first
The coefficient of elasticity of tension spring is greater than the coefficient of elasticity of the second tension spring；
It when the inlet pressure reduces, is acted on by the restoring force of the first tension spring and the second tension spring, compensated cavity and first delays
The intercommunication section between intercommunication section, the first cushion chamber and the second cushion chamber rushed between chamber reduces.
Under normal pressure, i.e., when liquefied ammonia is not involved in, under the action of the first tension spring and the second tension spring, the first block and second gear
Block is turned off respective position, closes outlet.
Since pressure is gradually reduced liquefied ammonia in use in liquid ammonia storage tank, however ammonia is but needed relatively surely with dore furnace
Fixed supply gas pressure, can be adjusted by pressure-control valve, specifically, the pressure difference that control piston two sides are subject to
The first tension spring tension can be driven, the second tension spring is pressurized, and the restoring force of the first tension spring and the second tension spring drives the first block and second
Block is closed, but respectively cavity internal pressure difference can drive the first block and the second block to be opened, when liquefied ammonia pressure reduces, control
What piston processed was subject to drives the driving force of control piston the first tension spring of stretching also to reduce, and the restoring force by tension spring acts on, pressure spring
It shortens, but controls piston and will continue to the state for being kept away from main valve stem, cause main valve stem to move down, the first block and the second block
The section for opening respective drain bore increases, and opens the pressure that passage section needs in other words and reduces, in other words under equivalent pressure
Passage section is bigger, and the effect of easing stress of entire pressure-control valve weakens, and outlet pressure maintains stable state.
Controlling piston is in the trend far from the movement of main valve stem direction, that is since control piston compression area of section is much big
In main valve stem.
The purpose that two pressure-control valves are arranged is, ensures the reliability of gas supply, at the same make maintenance do not influence be
The continuous operation of system.
In the pressure-control valve in a kind of above-mentioned liquefied ammonia hydrogen generating system, the control piston is slidably connected at valve body
On, one end of the main valve stem is slidably connected on valve body, and the other end of the main valve stem is slidably connected on control piston.
Control piston under first tension spring and the effect of the second tension spring can not only make outlet in the initial state in closing
State can be improved buffering effect, and can cooperate control piston, make the variation of inlet pressure in the display of non-linear inverse ratio
In the delivery flow of outlet, discharge pressure is held essentially constant when reducing liquefied ammonia pressure.
In the pressure-control valve in a kind of above-mentioned liquefied ammonia hydrogen generating system, the pressure-control valve further includes first pressure
Chamber and second pressure chamber, are separated between the First pressure chamber and second pressure chamber by a sliding sleeve, the First pressure chamber and
It is provided with the compensation valve rod being slidably connected on sliding sleeve between two pressure chambers, compensation valve rod is slidably connected in compensated cavity, it is described
Compensation valve rod is slidably connected on sliding sleeve, and the brake block positioned at First pressure chamber is fixedly installed on the compensation valve rod, described
It communicates, is separated by between the First pressure chamber and compensated cavity by brake block, and first pressure between import and First pressure chamber
Chamber and compensated cavity can be connected between the brake block and sliding sleeve by the gap intercommunication between brake block and compensation cavity wall
Reset spring, the brake block can be resisted against on main valve stem.
Due to ammonia tank periodic replacement, and more frequently, in the moment of liquefied ammonia cut-in pressure control valve, due to its pressure
The case where larger, main valve stem inevitably appears in the instantaneous position and does not correspond to, and makes outlet pressure non-required pressure, in order to avoid this
Situation keeps valve body impaired or causes adverse effect with dore furnace to ammonia, and one compensation bar of setting, which can be in entrance pressure
The driving lower moment of power is gradually increased main valve stem locking, locking post-compensation cavity pressure, drives brake block to be detached from main valve stem, makes
Main valve stem adjusts the situation for avoiding causing outlet pressure excessive in liquefied ammonia intervention moment to position is adapted to.
Reset spring is drawn when brake block pressure at both sides difference is larger, however is not sealing between brake block and valve chamber inner wall
, there are overflow gaps, and so that the pressure of brake block two sides is slowly restored normally, furthermore, liquefied ammonia pressure also can in compensated cavity
It is gradually increased, the pressure difference for balanced system motion block two sides.
It is not difficult to find out that being divided into two parts into the liquid nitrogen in compensated cavity, a part enters compensated cavity by control chamber, another
Part enters First pressure chamber, subsequently into compensated cavity by import, and the circulating direction of the two is to be mutually perpendicular to, and enters compensated cavity
The pressure of the first cushion chamber closed on is based on steady, this link, is that pressure die-offs the biggish link of amplitude, pressure it is steady non-
It is often important.
In a kind of above-mentioned liquid nitrogen hydrogen generating system, one is respectively arranged in first cushion chamber and the second cushion chamber
The adjusting component of respective volume size, the adjusting for adjusting component and including axle sleeve and being slidably connected in axle sleeve are adjusted respectively
Bar is fixedly installed a valve block on the adjusting rod, the valve block and the first buffering cavity wall in the first cushion chamber it
Between there is gap, there is gap, the adjusting rod between the valve block in the second cushion chamber and the second buffering cavity wall
A variable chamber, two variable chambers and second pressure chamber three's intercommunication, the variable chamber and second pressure chamber are formed between axle sleeve
Filled with hydraulic oil.
The factor of decompression is other than flow area, and there are also the space sizes of staging area, that is to say, that if in liquefied ammonia
During entering the first cushion chamber from compensated cavity, entering the second cushion chamber from the first cushion chamber, it is each enter after cavity volume
It can reduce with the reduction of inlet pressure, then can also buffer to liquefied ammonia pressure, transition is carried out to pressure change, and
Into the intracorporal pressure of back cavity can be compared in same space, same initial pressure situation is increased, to prevent pressure from subtracting
It is small that outlet pressure is caused to vary widely.
Reset spring is in tensional state before pressure reduces, and restores certain length after pressure reduction, makes first pressure
Chamber volume reduces, while second pressure chamber volume also reduces, and keeps two adjusting rods mobile to main valve stem direction, makes the first cushion chamber
Reduce with the second buffering cavity space.
There is one and main valve stem week in the pressure-control valve in a kind of above-mentioned liquefied ammonia hydrogen generating system, on the brake block
The recess of face adaptation.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of this liquefied ammonia hydrogen generating system.
Fig. 2 is the schematic illustration of pressure-control valve.
In figure, 1, liquid ammonia storage tank；2, ammonia dore furnace；3, it takes over；4, branch pipe；5, pressure-control valve；51, valve body；52, into
Mouthful；53, it exports；54, control chamber；55, compensated cavity；56, the first cushion chamber；57, the second cushion chamber；58, main valve stem；59, it assists
Valve rod；61, the first block；62, the second block；63, piston is controlled；64, the first tension spring；65, the second tension spring；66, butterfly valve；67,
First pressure chamber；68, second pressure chamber；69, valve rod is compensated；71, brake block；72, reset spring；73, adjusting rod；74, valve block；
75, variable chamber.
Specific embodiment
Following is a specific embodiment of the present invention in conjunction with the accompanying drawings, technical scheme of the present invention will be further described,
However, the present invention is not limited to these examples.
As depicted in figs. 1 and 2, this liquefied ammonia hydrogen generating system includes liquid ammonia storage tank 1, ammonia dore furnace 2, connection liquid ammonia storage tank 1
With the adapter tube 3 of ammonia dore furnace 2, two branch pipes 4 have been arranged in parallel on adapter tube 3, and pressure control is respectively set on every branch pipe 4
Valve 5, pressure-control valve 5 include valve body 51, import 52 and outlet 53, are provided with control chamber 54, compensated cavity 55, first in valve body 51
Cushion chamber 56 and the second cushion chamber 57 slidably connect a main valve stem 58 in control chamber 54, and control chamber 54 is communicated with import 52, column
Valve rod is also plugged in simultaneously in compensated cavity 55, the first cushion chamber 56 and the second cushion chamber 57, between control chamber 54 and compensated cavity 55
It is communicated by overflow hole, the intercommunication that being fixedly installed on main valve stem 58 can limit between compensated cavity 55 and the first cushion chamber 56 is cut
First block 61 of face size, being fixedly installed on main valve stem 58 can limit between the first cushion chamber 56 and the second cushion chamber 57
Intercommunication cross-sectional sizes the second block 62, outlet 53 communicates with the second cushion chamber 57, slidably connects on valve body 51 and main valve
The coaxial auxiliary valve rod 59 of bar 58 assists being fixedly installed a control piston 63 on valve rod 59, control piston 63 and main valve stem 58
Between be connected with the first tension spring 64 under tensional state, control and be provided between piston 63 and valve body 51 in tensional state
Under the second tension spring 65, the coefficient of elasticity of the first tension spring 64 is greater than the coefficient of elasticity of the second tension spring 65；
It when 52 pressure of import reduces, is acted on by the restoring force of the first tension spring 64 and the second tension spring 65, compensated cavity 55 and the
Intercommunication section, the first cushion chamber 56 between one cushion chamber 56 and the intercommunication section between the second cushion chamber 57 reduce；
A butterfly valve 66 is respectively set at the import 52 and outlet 53 of each pressure-control valve 5.
Under normal pressure, i.e., when liquefied ammonia is not involved in, under the action of the first tension spring 64 and the second tension spring 65,61 He of the first block
Second block 62 is turned off respective position, closes outlet 53.
Since pressure is gradually reduced liquefied ammonia in use in liquid ammonia storage tank 1, however ammonia is but needed relatively with dore furnace 2
Stable supply gas pressure, can be adjusted by pressure-control valve 5, specifically, what control 63 two sides of piston were subject to
Pressure difference can drive 64 tension of the first tension spring, and the second tension spring 65 is pressurized, and the restoring force of the first tension spring 64 and the second tension spring 65 drives
First block 61 and the second block 62 are closed, but respectively cavity internal pressure difference can drive the first block 61 and the second block 62 to be held
It opens, when liquefied ammonia pressure reduces, what control piston 63 was subject to drives the driving force of control the first tension spring 64 of stretching of piston 63 also to subtract
Small, the restoring force by tension spring acts on, and pressure spring shortens, but controls piston 63 and will continue to the state for being kept away from main valve stem 58,
Main valve stem 58 is caused to move down, the section that the first block 61 and the second block 62 open respective drain bore increases, and opens in other words
The pressure that passage section needs reduces, and passage section is bigger under equivalent pressure in other words, the effect of easing stress of entire pressure-control valve 5
Weaken, 53 pressure of outlet maintain stable state.
Controlling piston 63 is in the trend far from the movement of 58 direction of main valve stem, that is due to controlling 63 compression area of section of piston
It is far longer than main valve stem 58.
The purpose that two pressure-control valves 5 are arranged is, ensures the reliability of gas supply, at the same make maintenance do not influence be
The continuous operation of system.
Control piston 63 is slidably connected on valve body 51, and one end of main valve stem 58 is slidably connected on valve body 51, main valve stem
58 other end is slidably connected on control piston 63.Control piston 63 under first tension spring 64 and the effect of the second tension spring 65, no
Mouth 53 can only be used to be in close state in the initial state, can be improved buffering effect, and control piston can be cooperated
63, make the variation of 52 pressure of import being shown in the delivery flow of outlet 53 in non-linear inverse ratio, when reducing liquefied ammonia pressure
Discharge pressure is held essentially constant.
Pressure-control valve 5 further includes First pressure chamber 67 and second pressure chamber 68, First pressure chamber 67 and second pressure chamber
It is separated between 68 by a sliding sleeve, the compensation being slidably connected on sliding sleeve is provided between First pressure chamber 67 and second pressure chamber 68
Valve rod 69, compensation valve rod 69 is slidably connected in compensated cavity 55, and compensation valve rod 69 is slidably connected on sliding sleeve, compensates on valve rod 69
It is fixedly installed the brake block 71 positioned at First pressure chamber 67, is communicated between import 52 and First pressure chamber 67, First pressure chamber
It is separated by between 67 and compensated cavity 55 by brake block 71, and First pressure chamber 67 and compensated cavity 55 can pass through brake block 71 and benefit
The gap intercommunication between 55 inner wall of chamber is repaid, is connected with reset spring 72 between brake block 71 and sliding sleeve, brake block 71 can be against
On main valve stem 58.Due to ammonia tank periodic replacement, and more frequently, in the moment of liquefied ammonia cut-in pressure control valve 5, due to
Its pressure is larger, and main valve stem 58 inevitably appears in the instantaneous position and do not correspond to, and makes the case where exporting 53 pressure non-required pressure, is
It avoids this case from keeping valve body 51 impaired or adverse effect, one compensation bar of setting, the compensation bar is caused to ammonia dore furnace 2
Can moment, pressure was gradually increased in locking post-compensation chamber 55 to 58 locking of main valve stem under the driving of pressure at import 52, drive
So that brake block 71 is detached from main valve stem 58, adjust main valve stem 58 to position is adapted to, avoids causing outlet 53 in liquefied ammonia intervention moment
The excessive situation of pressure.
Reset spring 72 is drawn when brake block 71 pressure at both sides difference is larger, however between brake block 71 and valve chamber inner wall not
It is sealing, there are overflow gaps, and so that the pressure of 71 two sides of brake block is slowly restored normally, furthermore, liquid in compensated cavity 55
Ammonia pressure can be also gradually increased, the pressure difference for 71 two sides of balanced system motion block.
It is not difficult to find out that being divided into two parts into the liquid nitrogen in compensated cavity 55, a part enters compensated cavity by control chamber 54
55, another part enters First pressure chamber 67 by import 52, subsequently into compensated cavity 55, and the circulating direction of the two is mutually to hang down
Directly, so that compensated cavity 55 is entered the pressure of the first cushion chamber 56 closed on and be based on steady, this link, be that the pressure amplitude that die-offs is larger
Link, pressure it is steady extremely important.
The adjusting for adjusting respective volume size respectively is respectively arranged in first cushion chamber 56 and the second cushion chamber 57
Component adjusts the adjusting rod 73 that component includes axle sleeve and is slidably connected in axle sleeve, is fixedly installed a valve block on adjusting rod 73
74, there is between 56 inner wall of valve block 74 and the first cushion chamber in the first cushion chamber 56 gap, be located at the second cushion chamber 57
There is gap between interior 57 inner wall of valve block 74 and the second cushion chamber, form a variable chamber 75 between adjusting rod 73 and axle sleeve, two
The 68 three's intercommunication of a variable chamber 75 and second pressure chamber, variable chamber 75 and second pressure chamber 68 are filled with hydraulic oil.
The factor of decompression is other than flow area, and there are also the space sizes of staging area, that is to say, that if in liquefied ammonia
During entering the first cushion chamber 56 from compensated cavity 55, entering the second cushion chamber 57 from the first cushion chamber 56, it is each enter after
Cavity volume can reduce with the reduction of 52 pressure of import, then can also be buffered to liquefied ammonia pressure, to pressure change into
Row transition, and into the intracorporal pressure of back cavity can be compared in same space, same initial pressure situation is increased, thus
Prevent pressure reduction from 53 pressure of outlet being caused to vary widely.
Reset spring 72 is in tensional state before pressure reduces, and restores certain length after pressure reduction, makes the first pressure
67 volume of power chamber reduces, while 68 volume of second pressure chamber also reduces, and keeps two adjusting rods 73 mobile to 58 direction of main valve stem, makes
First cushion chamber 56 and 57 space of the second cushion chamber reduce.
There is a recess being adapted to 58 circumferential surface of main valve stem on brake block 71.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (5)
1. the pressure-control valve in a kind of liquefied ammonia hydrogen generating system, which is characterized in that this pressure-control valve (5) include valve body (51),
Import (52) and outlet (53), be provided in the valve body (51) control chamber (54), compensated cavity (55), the first cushion chamber (56) and
Second cushion chamber (57), the control chamber (54) is interior to be slidably connected a main valve stem (58), the control chamber (54) and import
(52) it communicates, the column valve bar is also plugged in simultaneously in compensated cavity (55), the first cushion chamber (56) and the second cushion chamber (57), institute
It states and is communicated between control chamber (54) and compensated cavity (55) by overflow hole, be fixedly installed and can limit on the main valve stem (58)
The first block (61) of intercommunication cross-sectional sizes between compensated cavity (55) and the first cushion chamber (56), it is solid on the main valve stem (58)
Surely it is provided with the second block that can limit the intercommunication cross-sectional sizes between the first cushion chamber (56) and the second cushion chamber (57)
(62), the outlet (53) communicates with the second cushion chamber (57), slidably connects on the valve body (51) same with main valve stem (58)
The auxiliary valve rod (59) of axis is fixedly installed a control piston (63), the control piston (63) on the auxiliary valve rod (59)
It is connected with the first tension spring (64) under tensional state between main valve stem (58), the control piston (63) and valve body (51)
Between be provided with the second tension spring (65) under tensional state, the coefficient of elasticity of the first tension spring (64) is greater than the second tension spring (65)
Coefficient of elasticity；
When import (52) pressure reduces, acted on by the restoring force of the first tension spring (64) and the second tension spring (65), compensated cavity
(55) intercommunication between the intercommunication section between the first cushion chamber (56), the first cushion chamber (56) and the second cushion chamber (57) is cut
Face reduces.
2. the pressure-control valve in a kind of liquefied ammonia hydrogen generating system according to claim 1, which is characterized in that the control piston
(63) it is slidably connected on valve body (51), one end of the main valve stem (58) is slidably connected on valve body (51), the main valve stem
(58) the other end is slidably connected in control piston (63).
3. the pressure-control valve in a kind of liquefied ammonia hydrogen generating system according to claim 2, which is characterized in that the pressure control
Valve (5) further includes First pressure chamber (67) and second pressure chamber (68), the First pressure chamber (67) and second pressure chamber (68)
Between separated by a sliding sleeve, be provided with and be slidably connected on sliding sleeve between the First pressure chamber (67) and second pressure chamber (68)
Compensation valve rod (69), compensation valve rod (69) is slidably connected in compensated cavity (55), the compensation valve rod (69) is slidably connected at
On sliding sleeve, the brake block (71) positioned at First pressure chamber (67), the import are fixedly installed on compensation valve rod (69)
(52) it is communicated between First pressure chamber (67), passes through brake block (71) between the First pressure chamber (67) and compensated cavity (55)
It is separated by, and First pressure chamber (67) and compensated cavity (55) can pass through the gap between brake block (71) and compensated cavity (55) inner wall
Intercommunication is connected with reset spring (72) between the brake block (71) and sliding sleeve, and the brake block (71) can be resisted against main valve
On bar (58).
4. the pressure-control valve in a kind of liquefied ammonia hydrogen generating system according to claim 3, which is characterized in that first buffering
The adjusting component for adjusting respective volume size respectively, the adjusting are respectively arranged in chamber (56) and the second cushion chamber (57)
Component includes axle sleeve and the adjusting rod (73) that is slidably connected in axle sleeve, is fixedly installed a valve block on the adjusting rod (73)
(74), being located between the valve block (74) and the first cushion chamber (56) inner wall in the first cushion chamber (56) has gap, is located at
There is gap, the adjusting rod (73) between the valve block (74) in second cushion chamber (57) and the second cushion chamber (57) inner wall
It is formed between axle sleeve a variable chamber (75), two variable chambers (75) and second pressure chamber (68) three's intercommunication, the variable chamber
(75) and second pressure chamber (68) is filled with hydraulic oil.
5. according to the pressure-control valve in a kind of liquefied ammonia hydrogen generating system of claim 3 or 4, which is characterized in that the braking
There is a recess being adapted to main valve stem (58) circumferential surface on block (71).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910641372.5A CN110332347B (en) | 2019-07-16 | 2019-07-16 | Pressure control valve in liquid ammonia hydrogen production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910641372.5A CN110332347B (en) | 2019-07-16 | 2019-07-16 | Pressure control valve in liquid ammonia hydrogen production system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110332347A true CN110332347A (en) | 2019-10-15 |
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| GB1428843A (en) * | 1972-06-08 | 1976-03-17 | Abex Corp | Flow control valve |
| JPH05346181A (en) * | 1992-06-12 | 1993-12-27 | Kayaba Ind Co Ltd | Pressure compensation type flow control valve |
| WO1998036197A1 (en) * | 1997-02-12 | 1998-08-20 | Komatsu Ltd. | Pressure compensating valve and directional control valve system using it |
| EP2317195A1 (en) * | 2009-11-02 | 2011-05-04 | Techspace Aero S.A. | Shut-off valve with pressure balancing system |
| CN207278485U (en) * | 2017-10-19 | 2018-04-27 | 咸宁南玻玻璃有限公司 | It is a kind of to ensure safe air supply system |
| CN110329990A (en) * | 2019-07-16 | 2019-10-15 | 咸宁南玻玻璃有限公司 | A kind of liquefied ammonia hydrogen generating system |
| CN210566503U (en) * | 2019-07-16 | 2020-05-19 | 咸宁南玻玻璃有限公司 | Pressure control valve in liquid ammonia hydrogen production system |
| CN210595251U (en) * | 2019-07-16 | 2020-05-22 | 咸宁南玻玻璃有限公司 | Liquid ammonia hydrogen production system |
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2019
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1428843A (en) * | 1972-06-08 | 1976-03-17 | Abex Corp | Flow control valve |
| JPH05346181A (en) * | 1992-06-12 | 1993-12-27 | Kayaba Ind Co Ltd | Pressure compensation type flow control valve |
| WO1998036197A1 (en) * | 1997-02-12 | 1998-08-20 | Komatsu Ltd. | Pressure compensating valve and directional control valve system using it |
| EP2317195A1 (en) * | 2009-11-02 | 2011-05-04 | Techspace Aero S.A. | Shut-off valve with pressure balancing system |
| CN207278485U (en) * | 2017-10-19 | 2018-04-27 | 咸宁南玻玻璃有限公司 | It is a kind of to ensure safe air supply system |
| CN110329990A (en) * | 2019-07-16 | 2019-10-15 | 咸宁南玻玻璃有限公司 | A kind of liquefied ammonia hydrogen generating system |
| CN210566503U (en) * | 2019-07-16 | 2020-05-19 | 咸宁南玻玻璃有限公司 | Pressure control valve in liquid ammonia hydrogen production system |
| CN210595251U (en) * | 2019-07-16 | 2020-05-22 | 咸宁南玻玻璃有限公司 | Liquid ammonia hydrogen production system |
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| CN110332347B (en) | 2024-03-26 |
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