CN106090359B - A kind of natural gas line pressure adjusting part - Google Patents
A kind of natural gas line pressure adjusting part Download PDFInfo
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- CN106090359B CN106090359B CN201610513144.6A CN201610513144A CN106090359B CN 106090359 B CN106090359 B CN 106090359B CN 201610513144 A CN201610513144 A CN 201610513144A CN 106090359 B CN106090359 B CN 106090359B
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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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/042—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded with locking or disconnecting arrangements
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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
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/048—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded combined with other safety valves, or with pressure control devices
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of natural gas line pressure adjusting parts, including stop valve and pressure regulator, and the valve port of connection pressure regulation leading portion and pressure regulation back segment, the cut-out spool of stop valve is connected with the lockable mechanism unlocked by gaseous-pressure after pressure regulation, and cuts off spool and form closure pressure by cut-out driving spring；Pressure regulator is equipped with by the main valve plug of a self-balance structure driving, and main valve plug is only movably located on the housing of pressure regulator；The main valve plug lower end is connected with the auxiliary valve core component of secondary self-balancing, and auxiliary valve core component includes outer barrel, inner cylinder, and inner cylinder lower face is equipped with leather bag, is equipped with T-shaped auxiliary valve core in the middle part of inner cylinder, T-shaped auxiliary valve core upper end is abutted with the main valve plug；T-shaped auxiliary valve core forms secondary self-balance structure by leather bag and compression spring.The invention has the advantages that the dual self-balancing pressure adjusting structure that pressure regulator formation is overlapped mutually；Stop valve is pure mechanic structure, the security risk that no-spark is brought.
Description
Technical field
Patent of the present invention is related to a kind of pressure adjusting part, particularly a kind of natural gas line pressure adjusting part.
Background technology
Pressure adjusting part is generally comprised to be turned off with stop valve and pressure regulator, stop valve for fluid medium, pressure regulator
It is a kind of adjustment mechanism for valve for adjusting Fluid pressure, pressure regulator generally use controls stream to the adjustment of valve port flow area size
Body flow realizes the purpose of pressure adjustment.Existing stop valve generally use pressure switch is actuated for controlling to stop valve, profit
It is opened with electromagnetic force, there are electrical equipments to produce pyrophoric security risk.Existing pressure regulator changes the mode of flow area size
It is to change spool to realize to the distance between valve port, the spool of existing pressure regulator drives spool movement to realize distance by pressure regulating device
Change.The pressure regulation driving mechanism generally use self-balance structure of this pressure regulator passes through spring and the film driven by pressure medium
Piece realizes self-balancing, and as the pressure increases, diaphragm overcomes spring pressure that spool is made to be moved to close to the direction of valve port；Work as pressure drop
When low, spring overcoming diaphragm resistance makes spool be moved away from valve port direction, is so repeated several times and achievees the purpose that pressure adjusts.
For the purpose for improving regulation precision, the spool design for performing component is the knot with self-balancing by those skilled in the art
Structure puies forward high-precision purpose to reach by Secondary Control.Such as the building disclosed in China Patent Publication No. CN201149112Y
Pressure regulator gas balance stabilizing valve core.The spool changes valve core head and valve port in a manner that leather bag, spring promote spool movement
Distance, and using in the middle part of valve core head close to before pressure regulation pressure and valve core head the edge part pressure close to after pressure regulation pressure difference, realize
The pressure regulation purpose of secondary balancing, since the pressure difference increases with the increase of valve port inlet pressure, therefore when inlet pressure changes,
Balance valve core is correspondingly formed pressure controlled equilibrium process.But the leather bag of the spool is pushed away by the pressed gas in annular chamber
Dynamic movement simultaneously forms secondary self-balance structure by spring reset, and toroidal cavity therein is step structure, and valve is being promoted by leather bag
The bearing area of core movement startup stage is less than the bearing area of equilibrium stage after startup.It is pressurized in leather bag by smaller loaded area
Spring power is overcome after moving hair core, at once into the increased state of loaded area, spool mobile range significantly increases,
It easily causes pressure regulation excessive, then overcomes leather bag thrust that spool is promoted to be moved towards the direction of pressure rise after pressure regulation by spring power
It is dynamic, and leather bag is made to return to the small state of bearing area.Pressure rise after pressure regulation is again introduced into the pressure regulation process of pressure reduction,
So it is repeated multiple times after can be only achieved secondary balancing state.Therefore, it is inevitable less than the bearing area of normal pressure regulation state during startup
Secondary balancing spool is caused to start insensitive to pressure change, and pressure balanced spool moves back and forth often, secondary balancing
Time is long, and regulation precision is difficult to meet design requirement.For this reason, it may be necessary to it is further improved.
The content of the invention
The purpose of the present invention provides a kind of natural gas line pressure adjusting part aiming at the deficiencies in the prior art,
Including stop valve and pressure regulator, stop valve cuts off power by energy storage member by driving power of the gaseous-pressure as startup control
The spring of part provides, and to form the stop valve of pure mechanic structure, can effectively eliminate because electric drive mode is fiery there are electronic component
Flower generates link；The execution component of pressure regulator has self-balancing pressure adjusting structure, to form dual pressure adjusting structure, shortens pressure adjustment
Time, to obtain required pressure rapidly.Its is compact-sized, pressure regulation is reliable.
To achieve the above object, the present invention adopts the following technical scheme that.
A kind of natural gas line pressure adjusting part, the valve port including connection pressure regulation leading portion and pressure regulation back segment, valve port
Inlet end and an outlet end is respectively equipped with stop valve and pressure regulator, and the cut-out spool of the stop valve is connected with by gas pressure after pressure regulation
The lockable mechanism of power unlock, and cut off spool and closure pressure is formed by cut-out driving spring；The pressure regulator be equipped with by once from
The main valve plug of balanced structure driving, main valve plug are only movably located on the housing of pressure regulator；The main valve plug lower end is connected with
The auxiliary valve core component of secondary self-balancing.
Using the present invention of preceding solution, since the input end of valve port is equipped with stop valve, the stop valve of the stop valve
Core is connected with the lockable mechanism unlocked by gaseous-pressure after pressure regulation, and cuts off spool and form closure pressure by cut-out driving spring；
Therefore, cut-out is in pure mechanic structure, can effectively eliminate that there are electronic component sparks to generate link because of electric drive mode.Pressure regulator
Equipped with the main valve plug and the auxiliary valve core component for the secondary self-balancing being connected with main valve plug by a self-balancing mechanism driving.Auxiliary valve core
It is located at for the lower end working face of pressure regulation above valve port, realizes what is flowed out by valve port by the distance changed between valve port upper surface
Rate-of flow achievees the purpose that pressure adjusts.This natural gas line with the Double regulating swaging of pressure adjusting part into being overlapped mutually,
Pressure regulation stroke is big, and pressure equalization process is short, and voltage regulation result is good, and simple in structure, compact.
Preferably, the auxiliary valve core component includes being fixed on outer barrel above valve port, removable in outer barrel to be equipped with inner cylinder, interior
Leather bag is equiped with by leather bag edge compression between cylinder lower face and the interior step of outer barrel lower part, valve is equipped in the middle part of inner cylinder
Bar, valve rod form dismountable T-shaped auxiliary valve core with pressure head, and valve rod has the rod segment for stretching out the inner cylinder upper end, the extension bar
The distal end of section is screwed with baffle ring, is equipped with to form the compression bullet of balance with leather bag between the baffle ring and the opposite end face of inner cylinder
Spring；Leather bag is sleeved on by the mounting hole that its middle part is equipped on valve rod, is close on the outside of leather bag on the inner face of pressure head；Inner cylinder passes through
On the inside of leather bag and valve rod is formed with annular closed cavity, and the annular closed cavity is by running through the mesoporous of T-shaped auxiliary valve core lower end
It is connected with outside, the sealed connection that pressure head periphery is slidably matched with outer barrel formation；The annular closed cavity is in wait to cut vertically
Face structure；The valve rod is abutted by positioning shaft shoulder with the bottom surface of annular closed cavity.
When valve port pressure medium raises and the pressure of pressure regulation back segment is caused to be higher than setting value, the pressure medium after pressure regulation leads to
That crosses a self-balance structure driving moves down main valve plug, and main valve plug promotes auxiliary valve core to move down；Meanwhile the valve port pressure medium liter
It is high and when causing pressure head center and the increased amplitude of outer main pressure differential to be more than setting value, the medium close to inlet pressure passes through mesoporous
Into toroidal cavity, medium promotes spool to overcome compression spring power using pressure differential by leather bag, moves down spool close
Pressure regulation valve port, the superposition value of the two amount of moving down form displacement total amount of the auxiliary valve core close to pressure regulation valve port, reduce and flow into pressure regulation environment
Rate-of flow, reduce the pressure difference that in the middle part of pressure regulation back segment pressure medium and pressure head and peripheral part is formed；Medium pressure after pressure regulation
After power reduces, a self-balance structure driving makes main valve plug move up return, and auxiliary valve core moves up return with main valve plug；It is and same with this
When, after the pressure difference reduction of pressure head middle part and peripheral part formation, auxiliary valve core is also under the compression spring effect of secondary self-balance structure
Overcome leather bag elastic force, move up auxiliary valve core, the superposition value of both similary return amount forms auxiliary valve core away from pressure regulation valve port
Displacement total amount, increase flow into the rate-of flow of pressure regulation environment, increase pressure regulation back segment pressure medium, and make pressure head middle part and peripheral part
The pressure difference increase of formation.When pressure increase reaches setting value and in the middle part of pressure head and the pressure difference of peripheral part formation reaches setting
During value, spool is in the position of equilibrium state, and the pressure medium of pressure regulation back segment is kept constant.Since toroidal cavity is axial etc.
Cross section structure, therefore, the variation that spool movement starts sensitive pressure difference after spool movement in the middle part of pressure head between periphery are put down
Surely, the cycle-index of reciprocating movement is few, and the equilibrium process time is short, and regulation precision is high.Its position is adjusted by rotating baffle ring, is changed
Initial tension of spring is compressed, realizes the setting of pressure adjusted value.Auxiliary valve core component in this pressure regulation device assembly is installed solid by outer barrel
Fixed, auxiliary valve core, leather bag, annular closed cavity and the compression spring that pressure regulation performs component are both formed in outer barrel, wherein, secondary valve
Core structure in T shape, auxiliary valve core form the self-balancing of axial position by compressing spring and leather bag.With this auxiliary valve core component
Pressure regulator has the function of Double regulating pressure, and pressure regulation stroke is big, and pressure regulation process is short, and regulation precision is high.
Preferably, the inner cylinder is only movably installed in outer barrel, and inner cylinder passes through the hollow form pressure that is screwed on outer barrel
Tight plug screw is fixed, and the hollow part of plug screw forms the installation space of the baffle ring and spring；Suit institute is formed on the inner cylinder
State the bulge loop of compression spring；Outer barrel upper end is formed with mounting flange disk.To carry out installation fixation by ring flange support, improve
The stability of installation, and baffle ring and spring form internals, further cramped construction adapts to installation space and is limited place；Bullet
Spring installation it is secured, the course of work is stablized, pressure regulation agility, predictable good.
Preferably, the pressure head is sleeved on the valve rod, and the suit mating surface of pressure head and valve rod is sealed by O-ring；
The pressure head is T-shaped, and pressure head is adjacent to by the small end end face of T-shaped with the leather bag, and the outside of leather bag is equipped with end cap, which abuts
In the positioning shaft shoulder, end cap has the flange for the T-shaped small end peripheral part for being fastened on pressure head, so that the leather bag is to pressure head
T-shaped small end periphery forms package；Pressure head forms axially position by leather bag and end cap by the positioning shaft shoulder on valve rod, and passes through spiral shell
The end cap closed in valve rod compresses, which is located in the installation counterbore that pressure head is equipped with；The mesoporous includes interconnected pressure head
Through hole and stem through-hole, pressure head through hole axially penetrate through pressure head, and stem through-hole is made of interconnected axial direction part and radial section, axis
It is located on valve rod to section, and is connected in valve rod lower end with pressure head through hole, radial section is located in positioning shaft shoulder, radial section and the ring
Shape closed cavity connects.The reliable detachable structure so that pressure head and valve rod form a fixed connection, reduces manufacture difficulty, and is pressing
Head is internal to form the passage connected with annular closed cavity, further ensures that compact-sized, improves the adaptability of installation space.Separately
Outside, the medium channel path that mesoporous is formed is short, easy to process, reduces manufacture difficulty and manufacture cost.In addition, end cap can improve skin
The bonding strength of capsule and valve rod, and pass through end cap and protection is formed to leather bag, it eliminates and is damaged in leather bag motion process by inner sleeve, extended
Leather bag service life；Certainly, end cap also contributes to the leakproofness that leather bag is connected with valve rod.
Preferably, a self-balance structure includes lever, drive rod, main leather bag, master tray and main spring；Master tray
The upper side of the main leather bag is fitted in, lever is hinged on the housing by middle part, and lever one end is equipped with elongated slot, matches somebody with somebody in elongated slot
The axis pin for having and being fixedly connected on the main valve plug upper end is closed, the lever other end is movably connected in the drive rod lower end, drive rod
It forms a fixed connection through the main leather bag and master tray, and by middle part and main leather bag and master tray, main leather bag downside and institute
The cavity for stating housing formation is connected with the pressure regulation back segment；The master tray is equipped with the main spring, and main spring is by screwing togather
Main regulation plug screw on the housing compresses.To form compact-sized main pressure regulator driving structure, reduce occupied space, and master
Voltage regulation function is reliable.
Preferably, the cut-out spool is slidably fitted on cut-out valve body, and the cut-out driving spring is located at cut-out spool
Between cut-out valve body, cut-out driving spring is used for when the lockable mechanism is in the unlocked state, and cut-out driving spring relies on
Elastic force driving cut-out spool movement, and closure is formed to the fuel gas inlet of valve port；The lockable mechanism includes lock pin, lockpin ventilating
The horizontal locking for being inserted in and forming valve opening state in the annular groove of cut-out spool to cut-out spool is crossed, lock pin both sides are respectively equipped with lock
Only spring and unlock membrane, locking spring and unlock membrane are respectively used to the locking of lock pin and the mobile driving of unlock；The unlock
Diaphragm cavity is formed between membrane and cut-out valve body, the medium entrance of the diaphragm cavity is connected with the pressure regulation back segment.Due to stop valve
Cut-out driving spring is equipped between core and cut-out valve body, when lockable mechanism is in the unlocked state, cut-out spool drives by cutting off
It moves the elastic force driving movement of spring, so as to form closure to the fuel gas inlet of valve port.Its cut-out closing power is constant, from combustion
Atmospheric pressure size influences, and simple in structure, and cut-out is reliable.Wherein, lockable mechanism is inserted in by horizontal in the annular groove of cut-out spool
Lock pin form locking to cut-out spool movement, lock pin is respectively by locking spring and unlock membrane driving spool locking reconciliation
Lock；Diaphragm cavity is formed between unlock membrane and cut-out valve body, the medium entrance of the diaphragm cavity is connected with the pressure regulation back segment.Cause
This, when gaseous-pressure is more than setting value in diaphragm cavity, membrane promotes displacement by combustion gas, overcomes the elastic force of locking spring
Make the annular groove of lock pin abjection spool, achieve the purpose that cutting off spool is unlocked and the blast tube of valve port is closed.To realize
Raise the cut-out management for control of transfiniting extremely to gaseous-pressure on pressure regulation back segment, cut-out control directly utilizes pressure regulation back segment internal combustion
Atmospheric pressure drives, and reliability is high, is not required to, by other instruments instrument, electric drive control more be not required, eliminates electrical equipment and opens
Movable property lights a fire flower and the fire or the security risk of explosion that bring.
It is further preferred that the lock pin is circle；The annular groove one side of the cut-out spool is formed with the conical shaft shoulder,
Lock pin and the conical shaft shoulder form the locking to cutting off spool, the circular conical surface of the cone shaft shoulder in tangent abutting state
With cutting off the angle α of valve core axis between 75 °~85 °.With facilitate manufacture, reduce manufacture cost, and in time lock pin or/
In the case of rotating with spool, locking control can be reliably realized；Frustoconical bevel angle parameter directly affects the reliable of locking
Property and unlock response speed, the angle is bigger, and locking is more reliable, and angle is smaller, and unlock corresponding speed is faster, therefore, rational to bore
Face angle degree needs to carry out theoretical calculation and lot of experiment validation according to the conditions such as lock pin and spool material, hardness, rough surface group
It obtains.Therefore, rational frustoconical bevel angle is selected, both can ensure that and obtained good reliability and quick, quick unlock performance.
It is further preferred that the lock pin is traversed in the middle part of tubular element, the middle part of tubular element is equipped with for through institute
Perforation is traversed in the bar shaped for stating cut-out spool, and lock pin is connected by being located at the part in tubular element pipe with the cut-out spool；Tubulose
Component is formed by the matching hole that the pipe outer wall of lock pin one side is equipped with the cut-out valve body and is slidably connected, tubular element position
In being formed with interior step on the section pipeline section endoporus of lock pin side, the endoporus of this section of pipeline section installs the locking spring, and interior step with
One end of locking spring abuts, and the other end of locking spring is connected on spring and tight plug screw, and simultaneously tight plug screw is screwed on institute to spring
It states on cut-out valve body；The distal end that tubular element is located at lock pin opposite side is connected with unlock membrane；It is fixed in the middle part of the unlock membrane
It is connected with rigid dish type bottom liner；The cut-out spool forms the blast tube of the valve port closure by front end, cuts off spool
Tail end exposes outside the stop valve body, and cut-out spool tail end is formed with free-hand handgrip.Tubular element and spool form ten
The arrangement that word intersects, topology layout is compact, and stop valve overall volume is small, and installation occupies little space, suitable for being laid in
In the narrow and small equipment of installation site or facility, wherein, the most of of membrane forms rigid structure, convenient for by the deformation of flexible portion
It is reliable to be converted into displacement, improve control sensitivity；Free-hand handgrip is used in pipeline fuel gas shutoff and fixes a breakdown or fire
After atmospheric pressure reduces, single-handedly spool is pulled until by automatic locking.
The invention has the advantages that the dual pressure adjusting structure that pressure regulator formation is overlapped mutually, pressure regulation stroke is big, and pressure is put down
Weighing apparatus process is short, and voltage regulation result is good, simple in structure, compact；Stop valve is pure mechanic structure, the security risk that no-spark is brought.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the structure diagram of secondary self-balancing auxiliary valve core component in the present invention.
Fig. 3 is the structure diagram of stop valve in the present invention.
Specific embodiment
The present invention is further illustrated below in conjunction with the accompanying drawings, but does not therefore limit the present invention to the implementation
Among example scope.
Referring to Fig. 1, Fig. 2, Fig. 3, a kind of natural gas line pressure adjusting part, after connection pressure regulation leading portion and pressure regulation
The valve port 14 of section, the inlet end and an outlet end of valve port 14 are respectively equipped with stop valve and pressure regulator, the cut-out spool of the stop valve
22 are connected with the lockable mechanism unlocked by gaseous-pressure after pressure regulation, and cut off spool 22 and form closure pressure by cut-out driving spring 23
Power；The port of export of the valve port 14 is equipped with pressure regulator, which is equipped with by the main valve plug 15 of self-balance structure driving, and one
Secondary self-balance structure includes lever 17, drive rod 18, main leather bag 19, master tray 20 and main spring 21, and master tray 20 is fitted in institute
State the upper side of main leather bag 19；Lever 17 is hinged on the housing by middle part, and 17 one end of lever is equipped with elongated slot, coordinates in elongated slot
There is the axis pin 16 for being fixedly connected on 15 upper end of main valve plug, lever 17 moves up and down main valve plug 15 by stirring axis pin 16,
17 other end of lever is movably connected in 18 lower end of drive rod, and drive rod 18 passes through the main leather bag 19 and master tray 20, and
It is formed a fixed connection by middle part and main leather bag 19 and master tray 20；The end afterbody of lever 17 stretches into the fluting of 18 lower end of drive rod
Interior, the upper and lower ends of the fluting are respectively equipped with a straight pin 33, and lever 17 stirs it around hinge by straight pin 33 respectively by both sides
Connect axis oscillating；Main 19 downside of leather bag is connected with the cavity that the housing is formed with the pressure regulation back segment；Master tray 20 is fixed
It is connected in the upper side of the main leather bag 19, the main spring 21 is equipped with by intermediate flange 20a engaging positioning on master tray 20,
Main spring 21 is compressed by the main regulation plug screw screwed togather on the housing.Main valve plug 15 is only movably located at the shell of pressure regulator
On body, 15 lower end of main valve plug is connected with the auxiliary valve core component of secondary self-balancing, and auxiliary valve core component includes being fixed on valve port 14
The outer barrel 1 of top, 1 upper end of outer barrel are formed with mounting flange disk 1a；Removable in outer barrel 1 to be equipped with inner cylinder 2, inner cylinder 2 is only removable
Dynamic is installed in outer barrel 1, and inner cylinder 2 compresses plug screw 8 by the hollow form being screwed on outer barrel 1 and fixes, and compresses 8 outer end shape of plug screw
Into driving hole 8a is turned, compressed between the interior step of 1 lower part of 2 lower face of inner cylinder and outer barrel by 3 edge of leather bag and be equiped with skin
Capsule 3, the middle part of inner cylinder 2 are equipped with valve rod 4, and valve rod 4 forms dismountable T-shaped spool with pressure head 5, and valve rod 4 is matched somebody with somebody with inner cylinder 2
Conjunction is equipped with sealing ring 13 between cylindrical surface；Valve rod 4 has the rod segment for stretching out 2 upper end of inner cylinder, and the distal end of the stretching rod segment screws togather
There is baffle ring 6, be equipped between the baffle ring 6 and the opposite end face of inner cylinder 2 for forming the compression spring 7 of balance with the leather bag 3,
On the bulge loop 2a formed on the compression spring 7 suit inner cylinder 2,6 outer end of baffle ring, which is formed with, adjusts driving hole 6a；The leather bag 3 by
The mounting hole that its middle part is equipped with is sleeved on valve rod 4, and 3 outside of leather bag is close on the inner face of pressure head 5；The inner cylinder 2 passes through
The inside of leather bag 3 and valve rod 4 are formed with annular closed cavity, and the annular closed cavity is by running through the mesoporous of T-shaped spool lower end
It is connected with outside, the sealed connection being slidably matched between 5 periphery of pressure head and the outer barrel 1 by sealing ring 5a formation, under pressure head 5
End face is equipped with gasket 12；Annular closed cavity is in cross-section structure vertically；Valve rod 4 is close by positioning shaft shoulder 4a and annular
The bottom surface for closing cavity abuts.Wherein, the hollow part for compressing plug screw 8 forms the baffle ring 6 and the installation of compression spring 7 is empty
Between.
Wherein, the pressure head 5 is T-shaped, and pressure head 5 is sleeved on the valve rod 4, and pressure head 5 and the suit mating surface of valve rod 4 are led to
It crosses O-ring 9 to seal, pressure head 5 is adjacent to by the small end end face of T-shaped with the leather bag 3, and the outside of leather bag 3 is equipped with end cap 11, the end cap
11 are connected on the positioning shaft shoulder 4a, and end cap 11 has the flange for the T-shaped small end peripheral part for being fastened on pressure head 5, so that described
Leather bag 3 forms package to the T-shaped small end periphery of pressure head 5；Pressure head 5 is by leather bag 3 and end cap 11 by the positioning shaft shoulder 4a on valve rod 4
Axially position is formed, and the end cap 10 by being screwed on valve rod 4 compresses, 10 outer end of end cap is formed with allen wrench hole 10a, should
End cap 10 is located in the installation counterbore that pressure head 5 is equipped with.Wherein, mesoporous includes interconnected pressure head through hole and stem through-hole, pressure
Head through hole axially penetrates through pressure head 5, and stem through-hole is made of interconnected axial direction part and radial section, and axial direction part is located on valve rod 4,
And connected in 4 lower end of valve rod with pressure head through hole, radial section is located on positioning shaft shoulder 4a, and radial section connects with the annular closed cavity
It is logical.
Wherein, cut-out spool 22 is slidably fitted on cut-out valve body 24, and cut-out spool 22 is by front end to the valve port 14
Fuel gas inlet forms closure, and 22 tail end of cut-out spool exposes outside cut-out valve body 24, and cut-out 22 tail end of spool is formed with socket cap
The free-hand handgrip 22b of shape, the free-hand handgrip 22b outer ends of cut-out spool 22, which are equipped with to be screwed on cut-out valve body 24, prevents
Protecting cover 31；The cut-out driving spring 23 is located between cut-out spool 22 and cut-out valve body 24, and cut-out driving spring 23 is used for
When the lockable mechanism is in the unlocked state, cut-out driving spring 23 is moved by elastic force driving cut-out spool 22, and to valve
The fuel gas inlet of mouth 14 forms closure；The lockable mechanism includes lock pin 25, and lock pin 25 passes through the horizontal ring for being inserted in cut-out spool 22
Form the locking of valve opening state in shape slot to cut-out spool 22,25 both sides of lock pin be respectively equipped with locking spring 26 and unlock every
Film 27, locking spring 26 and unlock membrane 27 are respectively used to the locking of lock pin 25 and the mobile driving of unlock；The unlock membrane 27
Diaphragm cavity is formed between cut-out valve body 24, the medium entrance 24a of the diaphragm cavity is connected with the pressure regulation back segment.Wherein, lock pin
25 be circle；The annular groove one side of cut-out spool 22 is formed with conical shaft shoulder 22a, the lock pin 25 and conical shaft shoulder 22a
The locking to cutting off spool 22, circular conical surface and cut-out 22 axis of spool of cone shaft shoulder 22a are formed in tangent abutting state
The angle α of line is between 75 °~85 °.
Wherein, lock pin 25 is traversed at the middle part of tubular element 28, and the middle part of tubular element 28 is equipped with for through the cut-out
Perforation is traversed in the bar shaped of spool 22, and lock pin 25 is connected by being located at the part in 28 pipe of tubular element with the cut-out spool 22；Pipe
Shape component 28 is formed by the matching hole that the pipe outer wall of 25 one side of lock pin is equipped with the cut-out valve body 24 and is slidably connected, pipe
Shape component 28, which is located on the section pipeline section endoporus of 25 side of lock pin, is formed with interior step, and the endoporus of this section of pipeline section installs the locking spring
26, and interior step is abutted with one end of locking spring 26, the other end of locking spring 26 is connected on spring and tight plug screw 29, bullet
Spring and tightly plug screw 29 are screwed on cut-out valve body 24, and spring and tightly 29 outside of plug screw are equipped with the protection being screwed on cut-out valve body 24
Lid 32, cut-out valve body 24 are screwed togather by same screw hole and spring and tight plug screw 29 and protection cap 32；Tubular element 28 is located at lock pin
The distal end of 25 opposite sides is connected with unlock membrane 27；27 middle part of unlock membrane is fixedly connected with rigid dish type bottom liner 30.
In the present embodiment, the angle α of the circular conical surface of conical shaft shoulder 22a and cut-out 22 axis of spool between 78 °~82 ° it
Between be optimal.
The preferred embodiment of the present invention described in detail above.It should be appreciated that those of ordinary skill in the art without
Creative work is needed according to the present invention can to conceive and makes many modifications and variations.Therefore, all technologies in the art
Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Technical solution, all should be in the protection domain being defined in the patent claims.
Claims (7)
1. a kind of natural gas line pressure adjusting part, the valve port including connection pressure regulation leading portion and pressure regulation back segment（14）, valve port
（14）Inlet end and an outlet end be respectively equipped with stop valve and pressure regulator, which is equipped with by the driving of self-balance structure
Main valve plug（15）, main valve plug（15）It is only movably located on the housing of pressure regulator, the cut-out spool of the stop valve（22）Even
The lockable mechanism unlocked by gaseous-pressure after pressure regulation is connected to, and cuts off spool（22）By cut-out driving spring（23）Form closure pressure
Power；The main valve plug（15）Lower end is connected with the auxiliary valve core component of secondary self-balancing；It is characterized in that, the auxiliary valve core component bag
It includes and is fixed on valve port（14）The outer barrel of top（1）, outer barrel（1）It is interior removable to be equipped with inner cylinder（2）, inner cylinder（2）Lower face and outer barrel
（1）Pass through leather bag between the interior step of lower part（3）Edge compression is equiped with leather bag（3）, inner cylinder（2）Middle part be equipped with valve rod
（4）, valve rod（4）With pressure head（5）Form dismountable T-shaped auxiliary valve core, valve rod（4）With the stretching inner cylinder（2）Upper end
Rod segment, the distal end of the stretching rod segment are screwed with baffle ring（6）, in the baffle ring（6）With inner cylinder（2）Opposite end face between be equipped be used for
With leather bag（3）Form the compression spring of balance（7）；Leather bag（3）The mounting hole being equipped with by its middle part is sleeved on valve rod（4）On, skin
Capsule（3）Outside is close to pressure head（5）Inner face on；Inner cylinder（2）Pass through leather bag（3）Inside and valve rod（4）It is close to be formed with annular
Cavity is closed, which connects by running through the mesoporous of T-shaped auxiliary valve core lower end with outside, pressure head（5）Periphery with it is outer
Cylinder（1）Form the sealed connection being slidably matched；The annular closed cavity is in cross-section structure vertically；The valve rod（4）It is logical
Cross positioning shaft shoulder（4a）It is abutted with the bottom surface of annular closed cavity.
2. natural gas line according to claim 1 pressure adjusting part, which is characterized in that the inner cylinder（2）Only may be used
Mobile is installed in outer barrel（1）It is interior, inner cylinder（2）By being screwed on outer barrel（1）On hollow form compress plug screw（8）It is fixed, plug screw
（8）Hollow part form the baffle ring（6）And spring（7）Installation space；The inner cylinder（2）On be formed with the suit pressure
Contracting spring（7）Bulge loop（2a）；The outer barrel（1）Upper end is formed with mounting flange disk（1a）.
3. natural gas line according to claim 1 pressure adjusting part, which is characterized in that the pressure head（5）Suit
In the valve rod（4）On, pressure head（5）With valve rod（4）Suit mating surface pass through O-ring（9）Sealing；The pressure head（5）In T
Shape, pressure head（5）Small end end face and the leather bag by T-shaped（3）It is adjacent to, leather bag（3）Outside be equipped with end cap（11）, the end cap
（11）It is connected to the positioning shaft shoulder（4a）On, end cap（11）With being fastened on pressure head（5）T-shaped small end peripheral part flange,
So that the leather bag（3）To pressure head（5）T-shaped small end periphery formed package；Pressure head（5）Pass through leather bag（3）And end cap（11）By
Valve rod（4）On positioning shaft shoulder（4a）Axially position is formed, and by being screwed on valve rod（4）End cap（10）It compresses, the end cap
（10）Positioned at pressure head（5）In the installation counterbore being equipped with；The mesoporous includes interconnected pressure head through hole and stem through-hole, pressure head
Through hole axially penetrates through pressure head（5）, stem through-hole is made of interconnected axial direction part and radial section, and axial direction part is located at valve rod（4）
On, and in valve rod（4）Lower end is connected with pressure head through hole, and radial section is located at positioning shaft shoulder（4a）On, radial section and the annular are close
Close cavity connection.
4. the natural gas line pressure adjusting part according to any one in claims 1 to 3, which is characterized in that institute
Stating a self-balance structure includes lever（17）, drive rod（18）, main leather bag（19）, master tray（20）And main spring（21）；It is main
Pallet（20）It is fitted in the main leather bag（19）Upper side, lever（17）Hinged on the housing, the lever by middle part（17）
One end is equipped with elongated slot, is combined in elongated slot and is fixedly connected on the main valve plug（15）The axis pin of upper end（16）, lever（17）It is another
End is movably connected in the drive rod（18）Lower end, drive rod（18）Through the main leather bag（19）And master tray（20）, and by
Middle part and main leather bag（19）And master tray（20）It forms a fixed connection, main leather bag（19）The cavity that downside is formed with the housing
It is connected with the pressure regulation back segment；The master tray（20）It is equipped with the main spring（21）, main spring（21）By being screwed on
The main regulation plug screw stated on housing compresses.
5. the natural gas line pressure adjusting part according to any one in claims 1 to 3, which is characterized in that institute
State cut-out spool（22）It is slidably fitted in cut-out valve body（24）On, the cut-out driving spring（23）It is located at cut-out spool（22）With
Cut off valve body（24）Between, cut off driving spring（23）For when the lockable mechanism is in the unlocked state, cut-out to drive bullet
Spring（23）Cut-out spool is driven by elastic force（22）It is mobile, and to valve port（14）Fuel gas inlet formed closure；The locking
Mechanism includes lock pin（25）, lock pin（25）Cut-out spool is inserted in by horizontal（22）Annular groove in cut off spool（22）Form valve
The locking of door opening, lock pin（25）Both sides are respectively equipped with locking spring（26）With unlock membrane（27）, locking spring（26）
With unlock membrane（27）It is respectively used to lock pin（25）Locking and the mobile driving of unlock；The unlock membrane（27）With cutting off valve body
（24）Between form diaphragm cavity, the medium entrance of the diaphragm cavity and the pressure regulation back segment are connected.
6. natural gas line according to claim 5 pressure adjusting part, which is characterized in that the lock pin（25）For circle
Shape；The cut-out spool（22）Annular groove one side be formed with the conical shaft shoulder（22a）, lock pin（25）With the conical shaft shoulder
（22a）It is formed in tangent abutting state to cutting off spool（22）Locking, the cone shaft shoulder（22a）Circular conical surface and cut-out
Spool（22）The angle α of axis is between 75 °~85 °.
7. natural gas line according to claim 5 pressure adjusting part, which is characterized in that the lock pin（25）It traverses
In tubular element（28）Middle part, tubular element（28）Middle part be equipped with for through the cut-out spool（22）Bar shaped traverse and wear
Hole, lock pin（25）By being located at tubular element（28）Part and the cut-out spool in pipe（22）Connection；Tubular element（28）It is logical
Cross lock pin（25）The pipe outer wall of one side and the cut-out valve body（24）The matching hole being equipped with forms sliding connection, tubular element
（28）Positioned at lock pin（25）Interior step is formed on the pipeline section endoporus of side, the endoporus of this section of pipeline section installs the locking spring
（26）, and interior step and locking spring（26）One end abut, locking spring（26）The other end be connected to spring and tight plug screw
（29）On, spring and tight plug screw（29）It is screwed on the cut-out valve body（24）On；Tubular element（28）Positioned at lock pin（25）It is another
The distal end of side is with unlocking membrane（27）Connection；The unlock membrane（27）Middle part is fixedly connected with rigid dish type bottom liner（30）；
The cut-out spool（22）By front end to the valve port（14）Blast tube formed closure, cut off spool（22）Tail end exposes institute
State cut-out valve body（24）Outside cuts off spool（22）Tail end is formed with free-hand handgrip（22b）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513144.6A CN106090359B (en) | 2016-06-30 | 2016-06-30 | A kind of natural gas line pressure adjusting part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610513144.6A CN106090359B (en) | 2016-06-30 | 2016-06-30 | A kind of natural gas line pressure adjusting part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106090359A CN106090359A (en) | 2016-11-09 |
| CN106090359B true CN106090359B (en) | 2018-05-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610513144.6A Active CN106090359B (en) | 2016-06-30 | 2016-06-30 | A kind of natural gas line pressure adjusting part |
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| Country | Link |
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| CN (1) | CN106090359B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109990131A (en) * | 2019-05-06 | 2019-07-09 | 特瑞斯能源装备股份有限公司 | A kind of high-precision self-operated two position three-way valve |
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| CN2432411Y (en) * | 2000-06-23 | 2001-05-30 | 重庆市山城燃气设备有限公司 | Gas pressure regulator |
| CN201116654Y (en) * | 2007-08-31 | 2008-09-17 | 重庆市山城燃气设备有限公司 | Two-way building combustion gas pressure regulating device box |
| CN201391672Y (en) * | 2009-03-26 | 2010-01-27 | 济南高新华能气动液压有限公司 | Return adjustable pneumatic butterfly valve actuator |
| CN201434101Y (en) * | 2009-06-15 | 2010-03-31 | 王建成 | Wicket type electric adjusting valve used for flow control |
| KR101125600B1 (en) * | 2010-04-19 | 2012-03-27 | 린나이코리아 주식회사 | Apparatus for driving valves |
| CN202510809U (en) * | 2012-03-14 | 2012-10-31 | 温州执控科技有限公司 | Novel electric actuator |
| CN103711964A (en) * | 2012-09-28 | 2014-04-09 | 艾默生过程管理调节技术公司 | Self aligning valve plug |
-
2016
- 2016-06-30 CN CN201610513144.6A patent/CN106090359B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2432411Y (en) * | 2000-06-23 | 2001-05-30 | 重庆市山城燃气设备有限公司 | Gas pressure regulator |
| CN201116654Y (en) * | 2007-08-31 | 2008-09-17 | 重庆市山城燃气设备有限公司 | Two-way building combustion gas pressure regulating device box |
| CN201391672Y (en) * | 2009-03-26 | 2010-01-27 | 济南高新华能气动液压有限公司 | Return adjustable pneumatic butterfly valve actuator |
| CN201434101Y (en) * | 2009-06-15 | 2010-03-31 | 王建成 | Wicket type electric adjusting valve used for flow control |
| KR101125600B1 (en) * | 2010-04-19 | 2012-03-27 | 린나이코리아 주식회사 | Apparatus for driving valves |
| CN202510809U (en) * | 2012-03-14 | 2012-10-31 | 温州执控科技有限公司 | Novel electric actuator |
| CN103711964A (en) * | 2012-09-28 | 2014-04-09 | 艾默生过程管理调节技术公司 | Self aligning valve plug |
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| Publication number | Publication date |
|---|---|
| CN106090359A (en) | 2016-11-09 |
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