CN110206922A - A kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated - Google Patents
A kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated Download PDFInfo
- Publication number
- CN110206922A CN110206922A CN201910633961.9A CN201910633961A CN110206922A CN 110206922 A CN110206922 A CN 110206922A CN 201910633961 A CN201910633961 A CN 201910633961A CN 110206922 A CN110206922 A CN 110206922A
- Authority
- CN
- China
- Prior art keywords
- valve body
- piston rod
- pressure
- cavity
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 34
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims abstract description 37
- 206010008469 Chest discomfort Diseases 0.000 claims abstract description 29
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 210000000115 thoracic cavity Anatomy 0.000 claims abstract description 6
- 230000013011 mating Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 238000005034 decoration Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 14
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 7
- 230000033001 locomotion Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 230000006837 decompression Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011261 inert gas Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- UKACHOXRXFQJFN-UHFFFAOYSA-N heptafluoropropane Chemical compound FC(F)C(F)(F)C(F)(F)F UKACHOXRXFQJFN-UHFFFAOYSA-N 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000001294 propane Substances 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/12—Actuating devices; Operating means; Releasing devices actuated by fluid
- F16K31/122—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston
- F16K31/1221—Actuating devices; Operating means; Releasing devices actuated by fluid the fluid acting on a piston one side of the piston being 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
- F16K41/00—Spindle sealings
- F16K41/02—Spindle sealings with stuffing-box ; Sealing rings
- F16K41/04—Spindle sealings with stuffing-box ; Sealing rings with at least one ring of rubber or like material between spindle and housing
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Safety Valves (AREA)
Abstract
The invention discloses a kind of pressure reducers of direct-insert big flow pressure-reduced and-regulated, it mainly include valve body, piston rod, adjustment spring, it is characterized in that the outlet low pressure chamber of the valve body and air inlet high pressure chest are respectively arranged at side wall and one end end of valve body, the air inlet high pressure chest cavity inner wall top is equipped with the valve seat of a circular ring shape by screw thread, the air inlet high pressure chest cavity inner wall of seat bottom portion is equipped with a hollow connection pedestal by screw thread, the piston rod is small in ends, cylindrical structure broad in the middle, the small portion end of piston rod is equipped with gasket, portion broad in the middle is connect with valve body internal cavity piston type movable sealing, valve body internal cavity and spring cavity are run through in the small portion of the other end, a vertical passageway is also provided in the piston club shaft.Structure of the invention is compact, economical, safe and reliable, is suitable for big-flow high-pressure and depressurizes, sealing effect more preferably, greatly reduces production, purchase and maintenance cost, installs and uses more convenient.
Description
Technical field
The present invention relates to fire fighting gas fire-extinguishing apparatus fields, specially a kind of to apply in high pressure 20Mpa or 30Mpa indifferent gas
The pressure reducer of one of body fire extinguishing system direct-insert big flow pressure-reduced and-regulated.
Background technique
Country's inert gas fire-fighting system extinguishing chemical is based on the storage of 15Mpa steel cylinder, its main feature is that accounting between steel cylinder at present
Construction area is big, and cost is high, discharges extinguishing chemical using pressure reducing orifice mode, total system pressure rating is all 15Mpa；And
For the identical fire-fighting dose in same protection zone, the construction area occupied between 20Mpa or 30Mpa its steel cylinder wants small, basic herein
On to consider that the safety of system, the application of pressure reducer are crucial, the member pressure grades after considerably reducing pressure reducer,
To reduce system overall cost cost.
Fire fighting gas fire extinguishing system pressure reducer well known to the country goes out in heptafluoro-propane for pressure type gas extinguishing system and dry powder
Be used widely in fiery system, but there are still the more insufficient places perfect with needs: 1, its pressure rating is all in 15Mpa
Hereinafter, being primarily limited to sealing technique, the sealing element on usual flow guiding nut is freely fixed using O-ring, but in high pressure
Its fixation reliability is bad under air-flow, such as " the switch valve dress for fire extinguishing system of Patent No. ZL201610476167.4
Set and fire extinguishing system " tapered end of component 146- pressure adjusting block (can be referred to as flow guiding nut) is equipped with sealing ring in attached drawing (is O-shaped
Circle), component 1- in " the outer dedicated pressure reducer of reservoir pressure Fire-extinguishing System of Septenary-Fluorine Propane " attached drawing of Patent No. ZL201420276536.1
The first O-ring of component 2- (for O-ring) on sealing shroud (flow guiding nut can be referred to as), Patent No. ZL200610026129.5's
Component 30- in " a kind of pressure reducing valve and prepared type fire-extinguishing device " attached drawing on component 33- sealing cover (can be referred to as flow guiding nut) is close
Seal (for O-ring) etc., the O-ring sealing means that flow guiding nut is freely fixed relatively are not suitable for high pressure 20Mpa or 30Mpa
Pressure reducer in inert gas fire-fighting system: when being applied to high pressure, sealing reliability is had a greatly reduced quality；2, peripheral hardware is mostly used greatly
Air inlet is connected to cushion chamber (or starting chamber) to reach the balance at spool both ends, but this by the connecting tube (or tracheae) of installation
Kind design is first is that increase production and maintenance cost, second is that failure is easy to appear, third is that the product structure bodily form is big；3, air inlet with
Production cost is significantly increased in the independent design of gas outlet.
Summary of the invention
The invention reside in a kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated is provided, especially suitable on flow guiding nut
Sealing technique is a completely new direct dynamic structure, and compact, economic, safe and reliable pressure reducer will with valve body self structure
High pressure bears part and is limited in lower valve body, and upper valve body spring cavity position is allowed to reduce Structural strength calls to be suitable for high pressure relief.
Technical problem solved by the invention is realized using following technical scheme:
A kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated, main includes the valve for being provided with air inlet high pressure chest and exporting low pressure chamber
Body, the piston rod being mounted in valve body internal cavity, and it is mounted on the adjustment spring of piston rod one end, which is characterized in that it is described
Outlet low pressure chamber and air inlet high pressure chest is respectively arranged at the side wall of valve body and one end end and the two all connect with valve body internal cavity
Logical, the air inlet high pressure chest cavity inner wall top is equipped with the valve seat of a circular ring shape, the air inlet high pressure of seat bottom portion by screw thread
Chamber cavity inner wall is equipped with a hollow connection pedestal by screw thread, and the adjustment spring is installed on the spring cavity of valve body one end
In vivo,
The piston rod is cylindrical structure small in ends, broad in the middle, and the diameter in the small portion in piston rod one end is less than valve body
The diameter of internal cavity so that between the end piston rod periphery and valve body internal cavity inner headed face, and with outlet low pressure chamber it
Between form the cavity that can be connected to, and the piston rod end end is equipped with a setting in connection pedestal hollow cavity and can be with annulus
The gasket of the mating sealing of shape valve seat inner hole, it is living between portion's periphery and valve body the internal cavity inner headed face broad in the middle of the piston rod
Valve body internal cavity and spring cavity are run through in the connection of plug movable sealing, the small portion of the piston rod other end, and piston rod should
Piston type movable sealing connection between through hole inner headed face on small portion's periphery and valve body is held, the small portion in the end passes through bullet towards outer end
Spring abutment is docked with adjustment spring, and a connection piston rod is also provided in the piston club shaft and is equipped with the small portion end in gasket one end
Portion and the small portion of the piston rod other end and valve body internal cavity are formed by the cavity i.e. vertical passageway of counter balance pocket, thus be connected into
Gas high pressure chest and counter balance pocket.
For the present invention, the junction in the small portion in one end and portion broad in the middle that the piston rod is connected with adjustment spring is provided with one
Interconnection, which is connected to the vertical passageway in piston rod, to realize the company of air inlet high pressure chest and counter balance pocket
It is logical.
For the present invention, the interface of piston rod portion's periphery broad in the middle and valve body internal cavity inner headed face, piston rod
The upper and lower ends of the interface of the small portion's periphery in one end and its through hole inner headed face and valve seat respectively with valve body and connect pedestal
Interface, seal O-ring is both provided with, to guarantee each interface leakproofness.
For the present invention, one end that the piston rod is equipped with gasket is provided with chuck, and is threaded with one and leads
Nut is flowed, the gasket is clamped between flow guiding nut and chuck by flow guiding nut, first is that sealing is effectively ensured
The leakproofness of pad and valve seat, second is that gasket can be replaced at any time.
For the present invention, the inner hole bevelling of the valve seat is described with the mating sealing of valve seat inner hole gasket to be and valve
The matched trapezoidal gasket in seat inner hole oblique angle.
For the present invention, the medial surface of the spring cavity wall is equipped with torsional spring lid, spring cavity wall by screw thread
Lateral surface Decorative Cover is equipped with by screw thread.
For the present invention, the connection pedestal is equipped with a universal active joint towards outer end, is conveniently adjusted outlet connection
Direction.
For the present invention, the adjustment spring, spring base, piston rod, valve body internal cavity, valve seat, connection pedestal, air inlet
High pressure chest is all co-axially mounted with valve body.
The utility model has the advantages that 1, the present invention is especially suitable for the sealing technique on flow guiding nut, direct dynamic structure is compact, warp
It helps, is safe and reliable；2, high pressure is born into part with valve body self structure and is limited in lower valve body, upper valve body spring cavity position is allowed to drop
Low Structural strength calls depressurize to be suitable for big-flow high-pressure；3, the sealing ring sealing of the piston rod of present technology is changed to by it
Gasket sealing, sealing effect more preferably, are suitable for high pressure relief, and not easy to wear；4, it is eliminated on the basis of present pressure reducing valve
Connecting tube between high pressure chest and counter balance pocket realizes the autobalance of valve inner, greatly reduce production, purchase and maintenance at
This；5, in the self-balancing of the realization Direct Action Type of existing pressure reducing valve, and the components such as connecting tube are eliminated, so that this pressure reducing valve
Volume is smaller, installs and uses more convenient；6, high pressure entry devises universal active joint, is conveniently adjusted outlet connection direction.
Detailed description of the invention
Fig. 1 is three-dimensional structure diagram of the invention；
Fig. 2 is the structure sectional view of (valve has been opened) in the operating condition of the invention.
Fig. 3 is the structure sectional view of (valve is not switched on) in a non-operative state of the invention.
In figure: 1- valve body；2- union；3- connection pedestal；4- air inlet high pressure chest；5- valve seat；6- spring cavity；7- is living
Small portion of the stopper rod towards lower end；8- flow guiding nut；9- gasket；10- exports low pressure chamber；11- piston rod；12- piston rod is towards upper end
Small portion；13- counter balance pocket；The big portion 14-；15- spring base；16- adjustment spring；17- torsional spring lid；18- Decorative Cover；19- is perpendicular
To channel；20- interconnection；21- seal O-ring；22- chuck.
P1 is air inlet high pressure chest pressure；P2 is counter balance pocket pressure；P3 is outlet low pressure chamber pressure；S1 is that P1 acts on water conservancy diversion
Upward active force area on nut；S2 is the down force area of P2 effect on the piston rod；S3 is that P3 acts on piston
Down force area on bar；S4 is the upward active force area of P3 effect on the piston rod；F is the elastic force of adjustment spring.
Specific embodiment
It is as follows that detailed description of specific embodiments of the present invention with reference to the accompanying drawing:
Referring to shown in attached drawing 1-3, a kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated, main includes being provided with air inlet high pressure chest
4 with the valve body 1 of outlet low pressure chamber 10, the piston rod 11 being mounted in valve body internal cavity, and be mounted on the tune of piston rod one end
Save spring 16, the outlet low pressure chamber and air inlet high pressure chest be respectively arranged at valve body side wall and one end end and the two all with
The connection of valve body internal cavity, the air inlet high pressure chest cavity inner wall top is equipped with the valve seat 5 of a circular ring shape, valve cup bottom by screw thread
The air inlet high pressure chest cavity inner wall in portion is equipped with a hollow connection pedestal 3(valve seat and the outer diameter phase that connect pedestal by screw thread
Together, but the internal diameter of valve seat is less than the internal diameter for connecting pedestal), the adjustment spring is installed in the spring cavity 6 of valve body one end,
The piston rod is cylindrical structure small in ends, broad in the middle (the big portion 14 in small portion 7,12 and centre including both ends), institute
State the small portion in piston rod one end (i.e. in attached drawing 2,3 piston rod towards lower end, as shown in 7 in attached drawing) diameter be less than valve body internal cavity
Diameter formed so that between the end piston rod periphery and valve body internal cavity inner headed face, and between outlet low pressure chamber
Can be connected to cavity (cavity when valve is in the working condition opened, for the circulation passage of gas, i.e., high pressure gas from into
Gas high pressure chest enters, from outlet low pressure chamber outflow after by the cavity and depressurizing), and the piston rod end end is equipped with one and sets
Set connection pedestal hollow cavity in and can be with the gasket 9 of the mating sealing of round ring seat inner hole, the main function of the gasket
Be exactly for effective sealed valve body internal cavity, in a non-operative state, the intracorporal circulation cavity of butterfly gate, in the piston rod
Between (the two joint face is in can be effective for the connection of piston type movable sealing between big 14 periphery of portion and valve body internal cavity inner headed face
The sealing state for preventing gas from circulating, and can be carried out upper and lower piston motion), small portion's (i.e. attached drawing of the piston rod other end
2, in 3 piston rod towards upper end, as shown in 12 in attached drawing) run through valve body internal cavity and spring cavity, and the end of piston rod is small
Piston type movable sealing connects between through hole inner headed face on portion's periphery and valve body, and the small portion in the end passes through spring base towards outer end
15 dock that (when this pressure reducer is in the off working state that valve is not switched on, which, which is in, is compressed with adjustment spring
State), be also provided with a connection piston rod in the piston club shaft and gasket one end end little Bu and piston be installed
The small portion of the bar other end and valve body internal cavity are formed by the cavity i.e. vertical passageway 19 of counter balance pocket 13, and the vertical passageway is by air inlet height
Pressure chamber is connected to counter balance pocket two chambers, so that two chambers can form the flowing of air-flow.
In the specific implementation:
1, the junction in the small portion in one end and portion broad in the middle that piston rod is connected with adjustment spring is provided with an interconnection 20, the cross
It is connected to channel with the vertical passageway in piston rod, to realize the connection of air inlet high pressure chest and counter balance pocket and the flowing of air-flow.
The interconnection has to that one end as close to piston rod portion broad in the middle is arranged in, to prevent from moving upward in piston rod
When extreme position, the interconnection by valve body to install the small portion in piston rod upper end through hole plug.
2, the small portion of interface and piston rod one end of piston rod portion's periphery broad in the middle and valve body internal cavity inner headed face
The upper and lower ends of the interface of through hole inner headed face and valve seat point on (the small portion as shown in 12 in attached drawing) periphery and valve body
With valve body and it is not connect the interface of pedestal, seal O-ring 21 is both provided with, to guarantee each interface leakproofness.The sealing is O-shaped
Circle uses the rubber seal of high elasticity abrasion-proof；Pair of piston rod portion's periphery broad in the middle and valve body internal cavity inner headed face is set
The installation side of the seal O-ring of the interface of through hole inner headed face on the small portion's periphery of junction and piston rod one end and valve body
Formula is opened circular groove for the valve body inner headed face in each interface and seal O-ring is installed in the circular groove (as shown in attached drawing 2,3)；
And the upper and lower ends that valve seat is arranged in then are mounted on valve seat respectively with the seal O-ring of valve body and the interface for connecting pedestal
In the O shape slot of lower both ends of the surface.
3, mounting means of the piston rod towards the gasket installed in the small portion in lower end are as follows: in the end piston rod close to end position
One chuck 22 is set, and one flow guiding nut 8 is installed by screw thread in the end of the end piston rod, gasket is mounted on card
Between platform and flow guiding nut, by tightening flow guiding nut come fixing seal pad, such structure design can effectively ensure that gasket
With leakproofness, that is, valve body integral sealing effect of valve seat, compared with the prior art, sealing effect is more preferably.
4, the sealing effect at place is docked to preferably guarantee gasket with valve seat, it in the specific implementation, can be by valve seat
Inner hole bevelling, meanwhile, gasket is designed to trapezoidal gasket matched with valve seat inner hole oblique angle, as close in attached drawing 2,3
Shown in the structure of packing and valve seat.
5, the medial surface of spring cavity wall is equipped with torsional spring lid 17 by screw thread, can prevent adjustment spring from falling off,
Again the depth of torsional spring lid can be adjusted to adjust the elasticity effect of adjustment spring by turning torsional spring lid；Spring cavity
The lateral surface of wall is equipped with Decorative Cover 18 by screw thread, prevents sundries from entering in valve body.It is all opened in torsional spring lid and Decorative Cover
There is aperture, in order to, with extraneous air circulation, prevent during piston rod movement, in spring cavity body in spring cavity body
Form high pressure or negative pressure.
6, be the outlet connection direction for being conveniently adjusted this pressure reducer, the connection pedestal to be equipped with one towards outer end universal
Union 2, the universal active joint is using common movable universal joint.
7, the adjustment spring, spring base, piston rod, valve body internal cavity, valve seat, connection pedestal, air inlet high pressure chest, all
It is installed with valve body coaxial (central axis).
Specific work process and principle:
As shown in Fig. 3: P1 is air inlet high pressure chest pressure；P2 is counter balance pocket pressure；P3 is outlet low pressure chamber pressure；S1 is P1
Act on the upward active force area on flow guiding nut；S2 is the down force area of P2 effect on the piston rod；S3 is P3
The down force area of effect on the piston rod；S4 is the upward active force area of P3 effect on the piston rod；F is to adjust bullet
The elastic force of spring.
For the counterbalance effect of this pressure reducer during the work time, it can simply be interpreted as P1 × S1+P3 × S4=P2
× S2+P3 × S3+F.Bleed pressure variation and pressure reducer can equally accomplish the purpose of pressure-reduced and-regulated, accomplish to change in design
P1 × S1 value balanced each other by counter balance pocket P2 × S2 value, P1=P2 actually, S1=S2, S3, S4 are definite values, it can be achieved that the decompression of P3 is steady
Pressure value, pressure-reduced and-regulated value depend on F value.
The design is big flow pressure reducer, and high pressure entry effective drift diameter 10mm, low tension outlet latus rectum is designed as 12mm.Decompression
When device works, adjusted when exporting latus rectum debugging variation aperture, pressure reducer when being not more than 12mm by piston up-down
Nut flow automatic regulation, outlet pressure can the constant pressure values in setting；When pressure reducer outlet is closed, in P3 × S4
The active force lower piston of value is constantly up moved until pressure reducer is closed, and pressure reducer outlet pressure at this time is slightly greater than setting
Pressure value, this belongs to motional inertia, is equipped with safety valve after system pressure reducer.
In the original state, the effect by adjustment spring to down spring, piston rod are in the lower end of its motion range, this
When, valve seat is separated with gasket, forms the gap of negotiable gas, and during the work time, gas flow is big in this pressure reducer
Small and speed depends on the size in the gap, and gap is bigger, and gas flow is bigger, on the contrary then smaller.
The installation of this pressure reducer is connected to fire extinguishing system storage bottle container valve outlet, when starting container value, pressure reducer enters work
After making state, high pressure gas enters air inlet high pressure chest, and flows through gap and valve body internal cavity that valve seat is separated with gasket, and
From outlet low pressure chamber outflow, meanwhile, the high pressure gas into air inlet high pressure chest can enter counter balance pocket through vertical passageway.In this process
In, piston rod is acted on the upward active force on S1 by P1, and the upward active force and P2 that P3 is acted on S4 act on S2
On down force, P3 acts on the down force on S3, the down force F of adjustment spring elastic force.When upward work
Firmly P1 × S1+P3 × S4 is greater than downward active force P2 × S2+P3 × S3+F, that is, P1 × S1+P3 × S4 > P2 × S2+
When P3 × S3+F, piston rod is moved downward, counter to know, as P1 × S1+P3 × S4 < P2 × S2+P3 × S3+F, piston rod to
Upper movement, when reaching P1 × S1+P3 × S4=P2 × S2+P3 × S3+F equilibrium state, piston rod is stationary, this is flat
Pressure-reduced and-regulated value when weighing apparatus state depends on F value, realizes the decompression purpose of high pressure out into low pressure by adjusting F value.
The present invention is especially suitable for the sealing technique on flow guiding nut, direct dynamic structure is compact, economical, safe and reliable；
High pressure is born into part with valve body self structure and is limited in lower valve body, upper valve body spring cavity position is allowed to reduce Structural strength calls,
To be suitable for high pressure relief；The sealing ring sealing of the piston rod of present technology is changed to gasket sealing by it, and sealing effect is more
It is good, it is suitable for high pressure relief, and not easy to wear；The connection between high pressure chest and counter balance pocket is eliminated on the basis of present pressure reducing valve
Pipe, realizes the autobalance of valve inner, greatly reduces production, purchase and maintenance cost；It is straight in the realization of existing pressure reducing valve
The self-balancing of dynamic formula, and the components such as connecting tube are eliminated, so that the volume of this pressure reducing valve is smaller, install and use more convenient；
High pressure entry devises universal active joint, is conveniently adjusted outlet connection direction.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry
Art personnel are it should be appreciated that the present invention is not limited to the above embodiments, without departing from the spirit and scope of the present invention, originally
Invention will also have various changes and improvements, these changes and improvements are both fallen in claimed range.The present invention claims guarantor
Shield range is defined by the appending claims and its equivalent thereof.
Claims (8)
1. a kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated, main includes being provided with air inlet high pressure chest and outlet low pressure chamber
Valve body, the piston rod being mounted in valve body internal cavity, and it is mounted on the adjustment spring of piston rod one end, which is characterized in that institute
The outlet low pressure chamber and air inlet high pressure chest stated be respectively arranged at valve body side wall and one end end and the two all with valve body internal cavity
Connection, the air inlet high pressure chest cavity inner wall top are equipped with the valve seat of a circular ring shape by screw thread, and the air inlet of seat bottom portion is high
Press chamber cavity inner wall that one hollow connection pedestal is installed by screw thread, the adjustment spring is installed on the spring of valve body one end
In cavity,
The piston rod is cylindrical structure small in ends, broad in the middle, and the diameter in the small portion in piston rod one end is less than valve body
The diameter of internal cavity so that between the end piston rod periphery and valve body internal cavity inner headed face, and with outlet low pressure chamber it
Between form the cavity that can be connected to, and the piston rod end end is equipped with a setting in connection pedestal hollow cavity and can be with annulus
The gasket of the mating sealing of shape valve seat inner hole, it is living between portion's periphery and valve body the internal cavity inner headed face broad in the middle of the piston rod
Valve body internal cavity and spring cavity are run through in the connection of plug movable sealing, the small portion of the piston rod other end, and piston rod should
Piston type movable sealing connection between through hole inner headed face on small portion's periphery and valve body is held, the small portion in the end passes through bullet towards outer end
Spring abutment is docked with adjustment spring, and a connection piston rod is also provided in the piston club shaft and is equipped with the small portion end in gasket one end
Portion and the small portion of the piston rod other end and valve body internal cavity are formed by the cavity i.e. vertical passageway of counter balance pocket, thus be connected into
Gas high pressure chest and counter balance pocket.
2. a kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated according to claim 1, which is characterized in that the piston
The junction in the small portion in one end and portion broad in the middle that bar is connected with adjustment spring is provided with an interconnection, the interconnection and piston
Vertical passageway connection in bar, to realize the connection of air inlet high pressure chest and counter balance pocket.
3. a kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated according to claim 1, which is characterized in that the piston
The interface of bar portion's periphery broad in the middle and valve body internal cavity inner headed face, the small portion's periphery in piston rod one end and its through hole inner circle
The upper and lower ends of the interface in face and valve seat with valve body and connect the interface of pedestal respectively, are both provided with seal O-ring.
4. a kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated according to claim 1, which is characterized in that the piston
One end that bar is equipped with gasket is provided with chuck, and is threaded with a flow guiding nut, and the gasket passes through water conservancy diversion
Nut is clamped between flow guiding nut and chuck.
5. a kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated according to claim 1, which is characterized in that the valve seat
Inner hole bevelling, described is trapezoidal gasket matched with valve seat inner hole oblique angle with the gasket of the mating sealing of valve seat inner hole.
6. a kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated according to claim 1, which is characterized in that the spring
The medial surface of cavity wall is equipped with torsional spring lid by screw thread, and the lateral surface of spring cavity wall is equipped with decoration by screw thread
Cover.
7. a kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated according to claim 1, which is characterized in that the company
Connect pedestal is equipped with a universal active joint towards outer end.
8. a kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated according to claim 1, which is characterized in that the tune
Spring, spring base, piston rod, valve body internal cavity, valve seat, connection pedestal, air inlet high pressure chest are saved, is all co-axially mounted with valve body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910633961.9A CN110206922A (en) | 2019-07-15 | 2019-07-15 | A kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910633961.9A CN110206922A (en) | 2019-07-15 | 2019-07-15 | A kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110206922A true CN110206922A (en) | 2019-09-06 |
Family
ID=67797401
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910633961.9A Pending CN110206922A (en) | 2019-07-15 | 2019-07-15 | A kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110206922A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2550596Y (en) * | 2002-06-02 | 2003-05-14 | 扬州市矿务局王庄煤矿 | Pressure reducing valve |
| JP2008052474A (en) * | 2006-08-24 | 2008-03-06 | Neriki:Kk | Pressure reducing valve |
| CN201448496U (en) * | 2009-06-19 | 2010-05-05 | 张家和 | Low-pressure reducing valve |
| US20120152571A1 (en) * | 2009-06-24 | 2012-06-21 | Luxembourg Patent Company S.A. | A high pressure gas discharge valve for a fire-extinguishing or explosion-preventing system |
| CN108679277A (en) * | 2018-08-15 | 2018-10-19 | 永阀门集团有限公司 | Pressure balance type safety valve |
| CN210153296U (en) * | 2019-07-15 | 2020-03-17 | 钱晓浪 | Direct-entering type large-flow pressure reducing and stabilizing device |
-
2019
- 2019-07-15 CN CN201910633961.9A patent/CN110206922A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2550596Y (en) * | 2002-06-02 | 2003-05-14 | 扬州市矿务局王庄煤矿 | Pressure reducing valve |
| JP2008052474A (en) * | 2006-08-24 | 2008-03-06 | Neriki:Kk | Pressure reducing valve |
| CN201448496U (en) * | 2009-06-19 | 2010-05-05 | 张家和 | Low-pressure reducing valve |
| US20120152571A1 (en) * | 2009-06-24 | 2012-06-21 | Luxembourg Patent Company S.A. | A high pressure gas discharge valve for a fire-extinguishing or explosion-preventing system |
| CN108679277A (en) * | 2018-08-15 | 2018-10-19 | 永阀门集团有限公司 | Pressure balance type safety valve |
| CN210153296U (en) * | 2019-07-15 | 2020-03-17 | 钱晓浪 | Direct-entering type large-flow pressure reducing and stabilizing device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4662616A (en) | Combined check and exhaust valve for high pressure gas spring | |
| CN106015675B (en) | A kind of one-way pressure-regulating overflow valve with thrust bearing | |
| CN104048085B (en) | A kind of pilot-operated type pressure regulator valve | |
| CN201753790U (en) | Safety valve for multi-way valve | |
| CN110206922A (en) | A kind of pressure reducer of direct-insert big flow pressure-reduced and-regulated | |
| CN210461828U (en) | Flow differential pressure setting valve | |
| CN212107059U (en) | Double-sealing check valve | |
| CN210153296U (en) | Direct-entering type large-flow pressure reducing and stabilizing device | |
| CN207005374U (en) | A kind of new automatic water compensating valve | |
| CN108679277A (en) | Pressure balance type safety valve | |
| CN105179757B (en) | Flow regulating valve with overvoltage protection | |
| CN208651660U (en) | A kind of compressed natural gas self-operated type gas cut off valve | |
| CN205423980U (en) | Zero leakage liquid accuse pressure regulating valve | |
| CN112576920A (en) | High-pressure gas cylinder with high-pressure gas buffering function valve body | |
| CN208474577U (en) | Novel water supply decompressor | |
| CN201779320U (en) | Novel gas reducing valve | |
| CN202065512U (en) | Spring-type safety valve for pressure stabilizer | |
| GB663416A (en) | Improvements in diaphragm-actuated valves | |
| CN215487871U (en) | Large-flow balance valve | |
| CN205618986U (en) | Novel gaseous pressure reducer of doublestage integral type | |
| CN209483941U (en) | Dynamic balance valve | |
| RU2615892C1 (en) | Safety valve of improved stability | |
| CN204062068U (en) | A kind of carbon dioxide reduction valve | |
| RU51761U1 (en) | GAS REDUCER | |
| CN207961653U (en) | A kind of diaphragm type pressure-reducing valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |