CN106195638B - Shop air is pressurized voltage-stabilizing system - Google Patents

Shop air is pressurized voltage-stabilizing system Download PDF

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Publication number
CN106195638B
CN106195638B CN201610698010.6A CN201610698010A CN106195638B CN 106195638 B CN106195638 B CN 106195638B CN 201610698010 A CN201610698010 A CN 201610698010A CN 106195638 B CN106195638 B CN 106195638B
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China
Prior art keywords
air
valve
supercharging
outlet
voltage
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Application number
CN201610698010.6A
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Chinese (zh)
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CN106195638A (en
Inventor
刘雨奇
丁明磊
滕召峰
宋伟
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Rizhao Beike new metal material Co.,Ltd.
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Rizhao Beike New Metal Material Co Ltd
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Priority to CN201610698010.6A priority Critical patent/CN106195638B/en
Publication of CN106195638A publication Critical patent/CN106195638A/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D1/00—Pipe-line systems
    • F17D1/02—Pipe-line systems for gases or vapours
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C13/00—Details of vessels or of the filling or discharging of vessels
    • F17C13/04—Arrangement or mounting of valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C5/00—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures
    • F17C5/06—Methods or apparatus for filling containers with liquefied, solidified, or compressed gases under pressures for filling with compressed gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C7/00—Methods or apparatus for discharging liquefied, solidified, or compressed gases from pressure vessels, not covered by another subclass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17D—PIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00—Arrangements for supervising or controlling working operations
    • F17D3/14—Arrangements for supervising or controlling working operations for eliminating water
    • F17D3/145—Arrangements for supervising or controlling working operations for eliminating water in gas pipelines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0326—Valves electrically actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0329—Valves manually actuated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2205/00—Vessel construction, in particular mounting arrangements, attachments or identifications means
    • F17C2205/03—Fluid connections, filters, valves, closure means or other attachments
    • F17C2205/0302—Fittings, valves, filters, or components in connection with the gas storage device
    • F17C2205/0323—Valves
    • F17C2205/0335—Check-valves or non-return valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2221/00—Handled fluid, in particular type of fluid
    • F17C2221/03—Mixtures
    • F17C2221/031—Air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/01—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the phase
    • F17C2225/0107—Single phase
    • F17C2225/0123—Single phase gaseous, e.g. CNG, GNC
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2250/00—Accessories; Control means; Indicating, measuring or monitoring of parameters
    • F17C2250/06—Controlling or regulating of parameters as output values
    • F17C2250/0605—Parameters
    • F17C2250/0626—Pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
    • F17C2260/00—Purposes of gas storage and gas handling
    • F17C2260/02—Improving properties related to fluid or fluid transfer

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Pipeline Systems (AREA)
  • Control Of Positive-Displacement Pumps (AREA)

Abstract

Shop air is pressurized voltage-stabilizing system, is related to compressed air supercharging and conveying technology field, especially belongs to a kind of shop air supercharging voltage-stabilizing system.It is characterized in that, including gas handling system, outlet system and voltage-stabilizing system, gas handling system includes air inlet pipeline and plenum pipeline again, outlet system includes outlet pipe and outlet pressure piping again, voltage-stabilizing system includes air accumulator, wherein, described air inlet pipeline includes in turn switching on total gas station, breather check valve, boost gauge and air lock valve is entered；Described plenum pipeline includes supercharging air pump, plenum check valve and the plenum gate valve in turn switched on.The present invention can realize the supercharging, voltage stabilizing and drying of compressed air simultaneously, due to closer to equipment using terminal, it is ensured that what the source of the gas after adjustment can be stablized come into operation, and in summary, the present invention has the stable good effect of bleed pressure.

Description

Shop air is pressurized voltage-stabilizing system
Technical field
The present invention relates to compressed air supercharging and conveying technology field, especially belongs to a kind of shop air supercharging voltage stabilizing system System.
Background technology
The compressed air used in current large-scale workshop is usually to be provided by the air compressor of distal end, then passes through pipeline Convey and distribute to each and use workshop and unit, and after long-distance, multi-pipeline conveying, compressed air has certain The pressure loss, while the situation of pressure transient occurs.For precision produces lathe, unstable compressed air can shadow Ring to critical functions such as the piece-holder in production process, position detection, chip purgings so that under the processing stability of lathe Drop, cause processing dimension bounce big, percent defective rise, while certain harm is produced to equipment life.Part producer attempts to improve The distribution pressure of master station's compressor, but due to the diversity of conveyance conduit so that the pressure stability problem of terminal is still difficult to solve Certainly.
The content of the invention
The purpose of the present invention is that providing a kind of shop air is pressurized voltage-stabilizing system, can carry out secondary place to source of the gas Reason, and source of the gas is automatically continuously removed water, to reach the purpose of voltage stabilizing and supercharging.
Shop air provided by the present invention is pressurized voltage-stabilizing system, it is characterised in that including gas handling system, outlet system with And voltage-stabilizing system, gas handling system include air inlet pipeline and plenum pipeline again, outlet system includes outlet pipe and outlet again Pressure piping, voltage-stabilizing system include air accumulator, wherein, it is unidirectional that described air inlet pipeline includes total gas station in turn switching on, air inlet Valve, boost gauge and enter air lock valve；Described plenum pipeline includes supercharging air pump, the plenum list in turn switched on To valve and plenum gate valve, what described outlet pipe included in turn switching on first goes out air lock valve, cooling driers, the second outlet Gate valve, outlet pressure table, outgassing nonreturn valve, described outlet pressure piping include the outlet supercharging gate valve, automatically controlled in turn switched on Valve, it is described to enter air lock valve, plenum gate valve, first go out air lock valve and outlet supercharging gate valve connects air accumulator respectively, electricity Control valve, outgassing nonreturn valve use equipment by the terminal outside pneumatic triple piece connection respectively；Described air accumulator is communicated with aobvious Show the bleed pressure table of pressure value in air accumulator；
The electric control loop of the present invention includes supercharging air pump control loop and electrically-controlled valve control loop, wherein, supercharging Air pump, electrically-controlled valve are respectively connected to electric power loop, the normally opened contact switch P2 of supercharging air pump contactor KM1 and bleed pressure table, often The normally opened contact switch Q2 of closed contact switch P1 composition supercharging air pump control loops, electrically-controlled valve contactor KM2 and outlet pressure table, Normally-closed contact switch Q1 forms electrically-controlled valve control loop, the normally opened contact switch and outlet pressure table of described bleed pressure table Normally opened contact switch the normally opened contact with supercharging air pump contactor, the normally opened contact of electrically-controlled valve contactor are connected respectively, formed Self-locking circuit, in addition, being provided with breaker in electric power loop.
Further, the top of described air accumulator is provided with safety valve, and bottom is provided with draining valve.
Further, the pressure limit of described air accumulator is controlled in the range of 0.4-0.6MPA.
Further, the unlocking condition of described booster pump is less than 0.4MPA for the pressure value of bleed pressure table, closes bar Part is that bleed pressure gauge pressure values are more than or equal to 0.6MPA.
Further, the unlocking condition of described electrically-controlled valve is less than 0.2MPA for the pressure value of outlet pressure table, closes bar Part is more than or equal to 0.4MPA for the pressure value of outlet pressure table.
Further, described terminal includes cylinder, air spider and nozzle using equipment.
Shop air provided by the present invention is pressurized voltage-stabilizing system, can realize simultaneously the supercharging of compressed air, voltage stabilizing and Dry, due to closer to equipment using terminal, it is ensured that what the source of the gas after adjustment can be stablized come into operation, in summary, The present invention has the stable good effect of bleed pressure.
Brief description of the drawings
Accompanying drawing part discloses the specific embodiment of the present invention, wherein,
Fig. 1 is the structural representation of the present invention；
Fig. 2 is electric control theory figure of the present invention.
Embodiment
As shown in figure 1, shop air provided by the present invention supercharging voltage-stabilizing system, including gas handling system, outlet system with And voltage-stabilizing system, gas handling system include air inlet pipeline and plenum pipeline again, outlet system includes outlet pipe and outlet again Pressure piping, voltage-stabilizing system include air accumulator 8, wherein, described air inlet pipeline includes total gas station 1, the air inlet list in turn switched on To valve 2, boost gauge 3 and enter air lock valve 4；Described plenum pipeline includes supercharging air pump 5, the air inlet in turn switched on It is pressurized check valve 6 and plenum gate valve 7, what described outlet pipe included in turn switching on first goes out air lock valve 13, cold dry Machine 15, second go out air lock valve 16, outlet pressure table 17, outgassing nonreturn valve 20, and described outlet pressure piping includes in turn switching on Outlet supercharging gate valve 11, electrically-controlled valve 14, it is described to enter air lock valve, plenum gate valve, first go out air lock valve and outlet increases Pressure gate valve connects air accumulator respectively, and the terminal that electrically-controlled valve, outgassing nonreturn valve connect outside by pneumatic triple piece 18 respectively uses Equipment 19.In addition, described air accumulator is communicated with the bleed pressure table 12 of pressure value in display air accumulator；
It is described to enter air lock valve, plenum gate valve, first go out air lock valve, second go out air lock valve and outlet supercharging gate valve Be hand-operated valve, normally open be in normal work, only need carry out system maintenance or change system unit and When system breaks down, state is converted to close off, so as to ensure, when being repaired, the upkeep operation such as changing, to avoid gas from sending out Raw leakage.
In addition, the top of air accumulator is provided with safety valve 9, bottom is provided with draining valve 10, prevents the too high generation of reservoir pressure Potential safety hazard.
As shown in Fig. 2 the electric control loop of the present invention includes supercharging air pump control loop and electrically-controlled valve control loop. Supercharging air pump, electrically-controlled valve are respectively connected to electric power loop, supercharging air pump contactor KM1 and bleed pressure table normally opened contact switch P2, normally-closed contact switch P1 form supercharging air pump control loop, and electrically-controlled valve contactor KM2 and outlet pressure table normally opened contact are opened Close Q2, normally-closed contact switch Q1 forms electrically-controlled valve control loop, wherein, the normally opened contact switch of bleed pressure table and go out air pressure The normally opened contact with supercharging air pump contactor, the normally opened contact of electrically-controlled valve contactor are connected the normally opened contact switch of power table respectively, Form self-locking circuit.Physical circuit operation principle is as follows：
1st, the circuit control of supercharging air pump motor：
When the pressure value of bleed pressure table is less than 0.4MPa, the normally opened contact switch of bleed pressure table is acted and closed, Turned on the loop where the normally-closed contact of bleed pressure table switch and supercharging air pump contactor, supercharging air pump contactor it is normal Contact closure, self-locking circuit conducting are opened, supercharging air pump obtains electric, supercharging air pump start-up operation, the unlatching of plenum pipeline；Work as source of the gas When the pressure value of pressure gauge is more than or equal to 0.6MPa, the normally-closed contact switch motion of bleed pressure table simultaneously disconnects, supercharging air pump Contactor powers off, and the normally opened contact of supercharging air pump contactor recovers normally open, supercharging air pump power-off, and supercharging air pump stops work Make, plenum pipeline is closed.
2nd, the circuit control of electrically-controlled valve circuit：
When the pressure value of outlet pressure table is less than 0.2MPa, the normally opened contact switch of outlet pressure table is acted and closed, Turned on the loop where outlet pressure table normally-closed contact switch and electrically-controlled valve contactor, the normally opened contact of electrically-controlled valve contactor Closure, self-locking circuit conducting, electrically-controlled valve are opened, and outlet pressure piping is opened；When the pressure value of outlet pressure table is more than or equal to During 0.4MPa, the normally-closed contact switch motion of outlet pressure table simultaneously disconnects, electrically-controlled valve contactor power-off, electrically-controlled valve contactor it is normal Open contact and recover normally open, electrically-controlled valve is closed, and outlet pressure piping is closed.
To carry out the overload protection of circuit, breaker Y is provided with electric power loop.
The description of careful supercharging voltage stabilizing process is carried out with reference to the specific embodiment of the present invention：
Compressed air gas source is transported at breather check valve at total gas station by long-distance, by boost gauge, is entered Air lock valve enters in air accumulator, and bleed pressure table obtains the pressure value in current air accumulator, and the pressure limit control of air accumulator exists 0.4-0.6MPa, if pressure value is less than 0.4Mpa, supercharging air pump starts, to carrying out supercharging operation in air accumulator, if storage When pressure inside gas tank is more than or equal to 0.6MPa, then supercharging air pump is stopped.Because electrically-controlled valve is normally off, so Compressed air can only go out air lock valve, cooling driers by first, second go out air lock valve, outlet pressure table, outgassing nonreturn valve, into end End uses equipment, and cooling driers carry out cool drying to compressed air, have the function that tentatively to remove water, due to by outlet pipe Conveying, incoming terminal occurred less than the pressure condition in air accumulator using the pressure value of the compressed air gas source of equipment, therefore By outlet pressure table, monitoring terminal uses the pressure value of compressed air using equipment, when the pressure value of outlet pressure table is less than During 0.2MPa, electrically-controlled valve is opened, and the compressed air in air accumulator can be directly entered terminal and use equipment.
In addition, the system is provided with pneumatic triple piece in feeding terminal, so as to which compressed air gas source is being sent into terminal use Play a part of good water removal, lubrication and pressure regulation before equipment.

Claims (6)

1. a kind of shop air is pressurized voltage-stabilizing system, it is characterised in that including gas handling system, outlet system and voltage-stabilizing system, Gas handling system includes air inlet pipeline and plenum pipeline again, and outlet system includes outlet pipe and outlet pressure piping again, surely Pressure system includes air accumulator（8）, wherein, described air inlet pipeline includes the total gas station in turn switched on（1）, breather check valve（2）、 Boost gauge（3）And enter air lock valve（4）；Described plenum pipeline includes the supercharging air pump in turn switched on（5）, air inlet It is pressurized check valve（6）And plenum gate valve（7）, what described outlet pipe included in turn switching on first goes out air lock valve （13）, cooling driers（15）, second go out air lock valve（16）, outlet pressure table（17）, outgassing nonreturn valve（20）, described outlet supercharging Pipeline includes the outlet supercharging gate valve in turn switched on（11）, electrically-controlled valve（14）, described enters air lock valve, plenum gate valve, One go out air lock valve and outlet supercharging gate valve connect air accumulator respectively, electrically-controlled valve, outgassing nonreturn valve pass through pneumatic triple piece respectively （18）Terminal outside connection uses equipment（19）, described air accumulator be communicated with display air accumulator in pressure value bleed pressure Table（12）；
The electric control loop of shop air supercharging voltage-stabilizing system includes supercharging air pump control loop and electrically-controlled valve control loop, Wherein, supercharging air pump, electrically-controlled valve are respectively connected to electric power loop, supercharging air pump contactor KM1 and bleed pressure table normally opened contact P2, normally-closed contact switch P1 composition supercharging air pump control loops are switched, electrically-controlled valve contactor KM2 touches with the normally opened of outlet pressure table Point switch Q2, normally-closed contact switch Q1 form electrically-controlled valve control loop, the normally opened contact switch of described bleed pressure table and The normally opened contact switch of outlet pressure the table normally opened contact with supercharging air pump contactor, the normally opened contact of electrically-controlled valve contactor respectively Connection, self-locking circuit is formed, in addition, being provided with breaker in electric power loop.
2. shop air according to claim 1 is pressurized voltage-stabilizing system, it is further characterized in that, the top of described air accumulator Provided with safety valve（9）, bottom is provided with draining valve（10）.
3. shop air according to claim 1 is pressurized voltage-stabilizing system, it is further characterized in that, the pressure of described air accumulator Scope control is in 0.4-0.6MPA sections.
4. shop air according to claim 3 is pressurized voltage-stabilizing system, it is further characterized in that, described supercharging air pump is opened Open the pressure value that condition is bleed pressure table and be less than 0.4MPA, closedown condition is that bleed pressure gauge pressure values are more than or equal to 0.6MPA。
5. shop air according to claim 1 is pressurized voltage-stabilizing system, it is further characterized in that, the unlatching of described electrically-controlled valve Condition is less than 0.2MPA for the pressure value of outlet pressure table, and closedown condition is more than or equal to for the pressure value of outlet pressure table 0.4MPA。
6. shop air according to claim 1 is pressurized voltage-stabilizing system, it is further characterized in that, described terminal uses equipment Including cylinder, air spider and nozzle.
CN201610698010.6A 2016-08-22 2016-08-22 Shop air is pressurized voltage-stabilizing system Active CN106195638B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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CN201610698010.6A CN106195638B (en) 2016-08-22 2016-08-22 Shop air is pressurized voltage-stabilizing system

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CN106195638B true CN106195638B (en) 2018-01-23

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CN106964895A (en) * 2017-05-22 2017-07-21 鞍钢蒂森克虏伯（重庆）汽车钢有限公司 A kind of nitrogen pressurization system for laser welder
CN108167639A (en) * 2017-12-26 2018-06-15 广东万合汽车供应链管理有限公司 A kind of air reservoir of the convenient semitrailer of damping gas storage
CN109234484A (en) * 2018-11-01 2019-01-18 天津市三特电子有限公司 The outer probe sheath front end dust stratification sweep-out method of blast furnace red and device
CN111734956B (en) * 2020-06-30 2022-01-11 重庆德能再生资源股份有限公司 Oxygen therapy device

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JPH10220699A (en) * 1997-02-13 1998-08-21 Nec Kyushu Ltd Gas supply system
CN202149359U (en) * 2011-07-26 2012-02-22 山东六和集团有限公司 Air supply system for air compressor
CN102352961A (en) * 2011-07-27 2012-02-15 北京万源瀚德汽车密封系统有限公司 Gas pressure stabilizing system
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