CN104405939B - A kind of three-level pressure reducer - Google Patents
A kind of three-level pressure reducer Download PDFInfo
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- CN104405939B CN104405939B CN201410649038.1A CN201410649038A CN104405939B CN 104405939 B CN104405939 B CN 104405939B CN 201410649038 A CN201410649038 A CN 201410649038A CN 104405939 B CN104405939 B CN 104405939B
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- valve
- pressure
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- valve body
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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
- F16K17/02—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
- F16K17/06—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 special arrangements for adjusting the opening pressure
Abstract
The invention provides a kind of three-level pressure reducer, belong to pipeline technical field.It solves existing reducer pressure change greatly, the problem of air pressure is unstable.This three-level pressure reducer, including valve body, air inlet pipe on valve body, escape pipe, one-level pressure relief valve lid and main decompression bonnet, one-level pressure-reducing chamber is formed between one-level pressure relief valve lid and valve body, one-level valve and main valve are installed on valve body, pushed against in one-level pressure relief valve lid to one-level valve, air inlet pipe is connected or closed by one-level valve with one-level pressure-reducing chamber, main pressure-reducing chamber is formed between main decompression bonnet and valve body, main pressure-reducing chamber is connected to escape pipe, pushed against in main decompression bonnet to main valve, two grades of valve and second depressurized bonnet are also equipped with valve body, second depressurized bonnet and valve body formation second depressurized room, there are the primary airways for being respectively communicated to two grades of valve in one-level pressure-reducing chamber, there are two grades of air flues for being communicated to main valve on second depressurized room.This three-level pressure reducer has the advantages that stable gas pressure, delicate structure.
Description
Technical field
The invention belongs to pipeline technical field, it is related to a kind of pressure reducer, particularly a kind of three-level pressure reducer.
Background technology
Pressure-reducing valve is, by regulation, inlet pressure to be reduced to the outlet pressure of a certain needs, and the energy by medium in itself
Amount, makes outlet pressure keep stable valve automatically.It is gases at high pressure due to what is exported in gas cylinder, and gas welding/cut equipment needs
Stable low-pressure gas, gases at high pressure are adjusted to low-pressure gas by pressure reducer.
Chinese patent CN201339816Y discloses a kind of double-stage pressure reducer, including valve body, upper lid, lower cover, one-level valve,
Two grades of valve；Described valve body is connected to form one-level pressure reduction air chamber with lower cover, and described valve body connects with top cap to be formed two grades and subtract
Plenum chamber, described one-level valve is located at the air inlet of one-level pressure reduction air chamber, and described one-level pressure reduction air chamber passes through two grades of valve
Connected with second depressurized air chamber, be provided with elastic film device in described one-level pressure reduction air chamber, described elastic film device
One end is provided with adjusting means.
Above-mentioned double-stage pressure reducer only has two-stage decompression, in actual use, and decompression series is few, and high pressure reduces to low pressure
When, pressure change is big in pressure reducer, and the low-pressure gas of output is unstable, disconnected/interface quality of workpiece when easily causing gas cutting/weldering
It is bad, multistage air pressure change is set, and topology layout is complicated.
The content of the invention
The purpose of the present invention is there is above mentioned problem for existing technology, it is proposed that a kind of stable gas pressure, delicate structure
Three-level pressure reducer.
The purpose of the present invention can be realized by following technical proposal：A kind of three-level pressure reducer, including valve body, installed in valve
Air inlet pipe, escape pipe on body, the one-level pressure relief valve lid and main decompression bonnet being separately mounted on valve body, the one-level pressure relief valve
Formed between lid and valve body on one-level pressure-reducing chamber, the valve body and one-level valve and main valve, the one-level pressure relief valve lid are installed
Interior abutting is to one-level valve, and the air inlet pipe is connected or closed by one-level valve with one-level pressure-reducing chamber, main decompression bonnet and valve
Main pressure-reducing chamber is formed between body, main pressure-reducing chamber is connected in escape pipe, the main decompression bonnet and pushed against to main valve, and its feature exists
In, be also equipped with the valve body two grades of valve and push against two grades of valve second depressurized bonnet, the second depressurized bonnet with
The primary airways for being respectively communicated to two grades of valve, described two are offered in valve body formation second depressurized room, the one-level pressure-reducing chamber
Level offers two grades of air flues for being communicated to main valve on pressure-reducing chamber.
In a kind of above-mentioned three-level pressure reducer, the main decompression bonnet is arranged on the side of valve body, the one-level decompression
Bonnet and second depressurized bonnet are arranged on the opposite side of valve body.
In a kind of above-mentioned three-level pressure reducer, the one-level pressure relief valve lid and second depressurized bonnet are symmetrical.
In a kind of above-mentioned three-level pressure reducer, high pressure gauge and low-pressure meter, the high pressure gauge are also equipped with the valve body
One-level pressure-reducing chamber is communicated to, the low-pressure meter is communicated to main pressure-reducing chamber.
In a kind of above-mentioned three-level pressure reducer, it is described it is main decompression bonnet include handwheel, the copper lid on valve body and
It is connected on handwheel and is screwed onto and spring is installed in the adjusting screw rod that copper is covered, the copper lid and the bullet of spring one end is resisted against
Diaphragm, the other end of the spring is connected with adjusting screw rod, and the bullet diaphragm is resisted against on main valve.
In a kind of above-mentioned three-level pressure reducer, the copper, which is covered, offers stepped hole, smooth on the bullet diaphragm to have pad
Circle, the external diameter of the packing ring is equal with the external diameter for playing diaphragm, and the packing ring is arranged in stepped hole, and the copper lid is threaded in
On valve body and play diaphragm and push against and packing ring and seal.
In a kind of above-mentioned three-level pressure reducer, the diaphragm that plays includes shell fragment, the backing plate being flattened on shell fragment, through simultaneously
The jacking block of connected shell fragment and backing plate, the main valve is resisted against on jacking block, and the spring is pushed against on backing plate.
In a kind of above-mentioned three-level pressure reducer, the internal diameter of the packing ring is more than the external diameter of backing plate.
Prior art is compared, and the present invention has following advantage：
1st, the three-level pressure reducer carries out three decompressions to gases at high pressure, gases at high pressure is reduced into low-pressure gas step by step, subtracts
Gases at high pressure are further depressurized in two grades of valve after pressure, are exported after main valve decompression is entered, the pressure range of decrease reduces, stable gas pressure,
Fluctuation is small.
2nd, one-level pressure relief valve lid and second depressurized bonnet and main decompression bonnet are separately positioned on valve body both sides, smaller to install
Space, is reasonably distributed, delicate structure.
3rd, one-level pressure relief valve lid and second depressurized bonnet are symmetrical, rationally distributed, easy to process, using it is first when adjust
Save after pressure limit, it is not necessary in regulation, formed constant pressure, it is easy to use.
4th, the cooperation for playing diaphragm and spring is set conveniently to adjust the pressure of main valve, the gas for exporting three-level pressure reducer
Pressure is stable, and regulation spring can be facilitated with playing the pressure of diaphragm by setting handwheel to rotate adjusting screw rod, easy to operate.
Brief description of the drawings
Fig. 1 is the structural representation of one-level pressure relief valve lid and valve body in the present invention.
Fig. 2 is the structural representation of second depressurized bonnet, main decompression bonnet and valve body in the present invention.
Fig. 3 is the mplifying structure schematic diagram at A in the present invention.
Fig. 4 is the overlooking the structure diagram of the present invention.
Fig. 5 is the present invention looks up structural representation of the present invention.
In figure, 1, valve body；11st, from connecting portion；12nd, main connecting portion；13rd, one-level pressure-reducing chamber；14th, second depressurized room；15th, it is main
Pressure-reducing chamber；16th, primary airways；17th, two grades of air flues；2nd, one-level pressure relief valve lid；21st, one-level valve；3rd, second depressurized bonnet；31、
Two grades of valve；4th, main decompression bonnet；41st, main valve；42nd, handwheel；43rd, adjusting screw rod；44th, Tong Gai；45th, spring；46th, film is played
Piece；461st, jacking block；462nd, backing plate；463rd, shell fragment；47th, packing ring；5th, air inlet pipe；6th, escape pipe；7th, low-pressure safety valve；71st, high pressure
Safety valve；8th, low-pressure meter；81st, high pressure gauge；.
Embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Figures 1 to 5, this three-level pressure reducer, including valve body 1, the air inlet pipe 5 on valve body 1, escape pipe 6,
High pressure gauge 81, low-pressure meter 8, the one-level pressure relief valve lid 2 being separately mounted on valve body 1, second depressurized bonnet 3 and main decompression bonnet 4,
One-level pressure-reducing chamber 13, second depressurized bonnet 3 and the formation second depressurized of valve body 1 room are formed between one-level pressure relief valve lid 2 and valve body 1
14, being formed to push against in main pressure-reducing chamber 15, one-level pressure relief valve lid 2 between main decompression bonnet 4 and valve body 1 has one-level valve 21, two grades
Decompression bonnet 3, which is pushed against, two grades of valve 31, and being pushed against in main decompression bonnet 4 has main valve 41, and one-level pressure-reducing chamber 13 leads to air inlet pipe 5
Cross the movement of one-level valve 21 to control both connection or closing, main pressure-reducing chamber 15 is connected to escape pipe 6, one-level pressure-reducing chamber 13
Inside offer to offer on the primary airways 16 for being respectively communicated to two grades of valve 31, second depressurized room 14 and be communicated to main valve 41
Two grades of air flues 17, high pressure gauge 81 is communicated to one-level pressure-reducing chamber 13, and low-pressure meter 8 is communicated to main pressure-reducing chamber 15, is set as preferred valve body 1
Cylinder is set to, air inlet pipe 5, escape pipe 6, high pressure gauge 81 and low-pressure meter 8 are installed on arc surface, also installed on arc surface
There are high-pressure safety valve 71 and low-pressure safety valve 7, high-pressure safety valve 71 is connected to one-level pressure-reducing chamber 13, and low-pressure safety valve 7 is connected to
The limiting pressure of air pressure, is just arranged more than pressed gas in main pressure-reducing chamber 15, high-pressure safety valve 71 and the protection valve body of low-pressure safety valve 7
Go out outside valve body 1, one-level pressure relief valve lid 2, second depressurized bonnet 3 and main decompression bonnet 4 are arranged in both ends of the surface.
One-level valve 21 is opened under the pressure effect of gases at high pressure, and gases at high pressure enter to one-level along air inlet pipe 5 and depressurized
Room 13, the gases at high pressure after first decompression are flowed at two grades of valve 31 through primary airways 16, and two grades of valve 31 are opened, gases at high pressure
What is further existed after decompression at inflow second depressurized room 14, second depressurized room 14 is the gas of middle pressure, is further passed through
Two grades of air flues 17 flow into main valve 41, and main valve 41 is adjusted by the pressure on main decompression bonnet 4, and control enters main pressure-reducing chamber 15
Pressure, make to be connected to the stable low-pressure gas of the output pressure of escape pipe 6 in main pressure-reducing chamber 15, it is ensured that set the stabilization of cushion gas,
The workpiece quality of processing is good, is depressurized using three-level, and the decompression series for effectively avoiding two stage pressure reducing is inadequate, the low pressure gas of output
The problem of body is not sufficiently stable, meanwhile, it can cause complicated again using the decompression of more stages, the path that gas is flowed through is long, makes
Circulated into gas not smooth, depressurized using three-level, that is, can guarantee that the steady output of low-pressure gas, the output stream of gas is can guarantee that again
Freely.
The main connecting portion 12 of an annular is protruded in the side of valve body 1, and main decompression bonnet 4 is arranged on the main connecting portion of valve body 1
On 12, the inner space between main decompression bonnet 4 and main connecting portion 12 forms main pressure-reducing chamber 15, is protruded in the opposite side of valve body 1
Two annulars from connecting portion 11, one-level pressure relief valve lid 2 and second depressurized bonnet 3 are arranged on from connecting portion 11, one-level decompression
Bonnet 2 and second depressurized bonnet 3 and one-level pressure-reducing chamber 13 and second depressurized room 14 are formed from the inner space between connecting portion 11,
One-level pressure relief valve lid 2 and second depressurized bonnet 3 are symmetrical.
One-level pressure relief valve lid 2 and second depressurized bonnet 3 are separately positioned on the both sides of valve body 1 with main decompression bonnet 4, and layout is closed
Reason, one-level pressure relief valve lid 2 and second depressurized bonnet 3 adjust one-level pressure relief valve lid 2 and second depressurized bonnet in primary debugging
The pressure value of 3 air pressure opened, one-level valve 21 and two grades of valve 31 are automatically opened up, thus are arranged in the same side, one-level decompression
Bonnet 2 and second depressurized bonnet 3, which are symmetrical arranged, can make easy to process and be laid out attractive in appearance；Main decompression bonnet 4 also needs to adjust out
The output pressure of tracheae 6, thus often regulation, thus Dan Chu sides are needed in use, it is easy to operate.
As shown in Figures 2 and 3, main decompression bonnet 4 includes handwheel 42, the copper lid 44 on valve body 1 and is connected in hand
Take turns and spring 45 is installed in the adjusting screw rod 43 on 42 and being screwed onto on copper lid 44, copper lid 44 and the bullet of the one end of spring 45 is resisted against
Diaphragm 46, the other end of spring 45 is connected with adjusting screw rod 43, offers stepped hole on copper lid 44, and playing smooth on diaphragm 46 has
Packing ring 47, the external diameter of packing ring 47 is equal with the external diameter for playing diaphragm 46, and packing ring 47 is arranged in stepped hole, and copper lid 44 is threaded in
On valve body 1 and play diaphragm 46 and push against and packing ring 47 and seal, play diaphragm 46 and be resisted against on main valve 41.
Playing diaphragm 46 includes shell fragment 463, the backing plate 462 being flattened on shell fragment 463, runs through and be connected shell fragment 463 and backing plate
462 jacking block 461, main valve 41 is resisted against on jacking block 461, and spring 45 is pushed against on backing plate 462, and the internal diameter of packing ring 47 is more than pad
The external diameter of plate 462.
Handwheel 42 drives adjusting screw rod 43 to rotate, and spring 45 compresses bullet diaphragm 46 in the presence of adjusting screw rod 43, plays film
Jacking block 461 on piece 46 pushes against main valve 41, and the pressure that control gas is exported from main valve 41 plays the work of regulation pressure
With easy to adjust；Set and play diaphragm 46 and packing ring 47, can effectively control to play the deflection of diaphragm 46 and the position of deformation, gas
Pressure regulation is more convenient；Play diaphragm 46 and seal up main decompression bonnet 4 and valve body 1, low-pressure gas is exported by escape pipe 6, interface
The good sealing effect at place.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology neck belonging to of the invention
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Claims (5)
1. a kind of three-level pressure reducer, including valve body, the air inlet pipe on valve body, escape pipe, it is separately mounted on valve body
One-level pressure relief valve lid and main decompression bonnet, are formed on one-level pressure-reducing chamber, the valve body between the one-level pressure relief valve lid and valve body
It is provided with one-level valve and main valve, the one-level pressure relief valve lid and pushes against to one-level valve, the air inlet pipe is depressurized with one-level
Room is connected or closed by one-level valve, forms main pressure-reducing chamber between main decompression bonnet and valve body, main pressure-reducing chamber is connected to outlet
Pushed against in pipe, the main decompression bonnet to main valve, it is characterised in that two grades of valve are also equipped with the valve body and two are pushed against
Opened in the second depressurized bonnet of level valve, the second depressurized bonnet and valve body formation second depressurized room, the one-level pressure-reducing chamber
Provided with the primary airways for being respectively communicated to two grades of valve, two grades of gas for being communicated to main valve are offered on the second depressurized room
Road；A main connecting portion is protruded in the side of the valve body, and the main decompression bonnet is arranged on main connecting portion, main decompression bonnet and master
Inner space between connecting portion forms main pressure-reducing chamber, protrudes two from connecting portion in the opposite side of valve body, the one-level pressure relief valve
Lid and second depressurized bonnet are symmetric installed in from connecting portion, one-level pressure relief valve lid and second depressurized bonnet with from being connected
Inner space between portion forms one-level pressure-reducing chamber and second depressurized room；High pressure gauge and low-pressure meter are also equipped with the valve body,
The high pressure gauge is communicated to one-level pressure-reducing chamber, and the low-pressure meter is communicated to main pressure-reducing chamber；Valve body is arranged to cylinder, air inlet pipe,
Escape pipe, high pressure gauge and low-pressure meter are installed on arc surface, and high-pressure safety valve and low-voltage safety are also equipped with arc surface
Valve, high-pressure safety valve is connected to one-level pressure-reducing chamber, and low-pressure safety valve is connected to main pressure-reducing chamber.
2. three-level pressure reducer according to claim 1, it is characterised in that the main decompression bonnet includes handwheel, is arranged on
Copper lid on valve body and be connected on handwheel and be screwed onto be provided with the adjusting screw rod that copper is covered, the copper lid spring and against
In the bullet diaphragm of spring one end, the other end of the spring is connected with adjusting screw rod, and the bullet diaphragm is resisted against on main valve.
3. three-level pressure reducer according to claim 2, it is characterised in that the copper, which is covered, offers stepped hole, the bullet
Smooth on diaphragm to have packing ring, the external diameter of the packing ring is equal with the external diameter for playing diaphragm, and the packing ring is arranged in stepped hole, described
Copper lid is threaded on valve body and plays diaphragm and pushes against packing ring and seal.
4. three-level pressure reducer according to claim 3, it is characterised in that the bullet diaphragm includes shell fragment, is flattened on shell fragment
On backing plate, the jacking block that runs through and be connected shell fragment and backing plate, the main valve is resisted against on jacking block, and the spring is pushed against backing plate
On.
5. three-level pressure reducer according to claim 4, it is characterised in that the internal diameter of the packing ring is more than the external diameter of backing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649038.1A CN104405939B (en) | 2014-11-14 | 2014-11-14 | A kind of three-level pressure reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649038.1A CN104405939B (en) | 2014-11-14 | 2014-11-14 | A kind of three-level pressure reducer |
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| Publication Number | Publication Date |
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| CN104405939A CN104405939A (en) | 2015-03-11 |
| CN104405939B true CN104405939B (en) | 2017-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410649038.1A Active CN104405939B (en) | 2014-11-14 | 2014-11-14 | A kind of three-level pressure reducer |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107131334A (en) * | 2017-05-26 | 2017-09-05 | 张家港市鸿嘉数字科技有限公司 | A kind of effective carbon-dioxide pressure reducer |
| CN109723695B (en) * | 2019-03-08 | 2023-10-20 | 广东南曦液压机械有限公司 | Ultrahigh pressure unloading valve |
| CN112797209A (en) * | 2021-01-28 | 2021-05-14 | 浙江元曜阀业有限公司 | Three-stage pressure reducing valve |
| CN115435123A (en) * | 2022-07-15 | 2022-12-06 | 宁波隆兴焊割科技股份有限公司 | High-pressure reducer with adjustable exhaust flow |
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|---|---|---|---|---|
| CN2382918Y (en) * | 1999-08-06 | 2000-06-14 | 唐琳海 | Three stage directly function reversal pressure reducing valve for compressed natural gas automobile |
| CN201218343Y (en) * | 2007-09-19 | 2009-04-08 | 成都莱达机械电子有限公司 | Pressure-reducing regulator for compressed natural gas used in vehicle |
| CN201339816Y (en) * | 2008-12-18 | 2009-11-04 | 宁波隆兴焊割科技股份有限公司 | Double-stage pressure reducer |
| CN203309258U (en) * | 2013-06-06 | 2013-11-27 | 重庆鼎辉汽车燃气系统有限公司 | Secondary and tertiary pressure reducing devices of high-flow natural gas three-stage pressure reducer for vehicle |
| CN204226771U (en) * | 2014-11-14 | 2015-03-25 | 宁波隆兴焊割科技股份有限公司 | A kind of three grades of decompressors |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000120895A (en) * | 1998-10-16 | 2000-04-28 | Nippon Walbro:Kk | Diaphragm type pressure reducing valve |
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2014
- 2014-11-14 CN CN201410649038.1A patent/CN104405939B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2382918Y (en) * | 1999-08-06 | 2000-06-14 | 唐琳海 | Three stage directly function reversal pressure reducing valve for compressed natural gas automobile |
| CN201218343Y (en) * | 2007-09-19 | 2009-04-08 | 成都莱达机械电子有限公司 | Pressure-reducing regulator for compressed natural gas used in vehicle |
| CN201339816Y (en) * | 2008-12-18 | 2009-11-04 | 宁波隆兴焊割科技股份有限公司 | Double-stage pressure reducer |
| CN203309258U (en) * | 2013-06-06 | 2013-11-27 | 重庆鼎辉汽车燃气系统有限公司 | Secondary and tertiary pressure reducing devices of high-flow natural gas three-stage pressure reducer for vehicle |
| CN204226771U (en) * | 2014-11-14 | 2015-03-25 | 宁波隆兴焊割科技股份有限公司 | A kind of three grades of decompressors |
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