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CN110748790A - Portable high-pressure nitrogen gas charging device - Google Patents

Portable high-pressure nitrogen gas charging device Download PDF

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Publication number
CN110748790A
CN110748790A CN201911029431.XA CN201911029431A CN110748790A CN 110748790 A CN110748790 A CN 110748790A CN 201911029431 A CN201911029431 A CN 201911029431A CN 110748790 A CN110748790 A CN 110748790A
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China
Prior art keywords
pressure
inflation
assembly
end cover
joint
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Granted
Application number
CN201911029431.XA
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Chinese (zh)
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CN110748790B (en
Inventor
侯友山
宋慧新
衡保林
何军
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China North Vehicle Research Institute
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China North Vehicle Research Institute
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Publication of CN110748790A publication Critical patent/CN110748790A/en
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Publication of CN110748790B publication Critical patent/CN110748790B/en
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    • 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
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/0005—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons
    • F04B39/0022—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00 adaptations of pistons piston rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/10—Adaptations or arrangements of distribution members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
    • F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
    • F04B39/122—Cylinder block
    • 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
    • F17C13/002—Details of vessels or of the filling or discharging of vessels for vessels under 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/01—Shape
    • F17C2201/0104—Shape cylindrical
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/03—Orientation
    • F17C2201/032—Orientation with substantially vertical main axis
    • 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
    • F17C2201/00—Vessel construction, in particular geometry, arrangement or size
    • F17C2201/05—Size
    • F17C2201/056—Small (<1 m3)
    • 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
    • F17C2221/01—Pure fluids
    • F17C2221/014—Nitrogen
    • 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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
    • F17C2223/0107—Single phase
    • F17C2223/0123—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
    • F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
    • F17C2223/03—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the pressure level
    • F17C2223/035—High pressure (>10 bar)
    • 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
    • F17C2225/00—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel
    • F17C2225/03—Handled fluid after transfer, i.e. state of fluid after transfer from the vessel characterised by the pressure level
    • F17C2225/035—High pressure, i.e. between 10 and 80 bars
    • 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
    • F17C2227/00—Transfer of fluids, i.e. method or means for transferring the fluid; Heat exchange with the fluid
    • F17C2227/01—Propulsion of the fluid
    • F17C2227/0128—Propulsion of the fluid with pumps or compressors
    • F17C2227/0135—Pumps
    • 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
    • F17C2270/00—Applications
    • F17C2270/05—Applications for industrial use

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Supply Devices, Intensifiers, Converters, And Telemotors (AREA)
  • Compressor (AREA)

Abstract

The invention belongs to the field of vehicle suspension, and discloses a portable high-pressure nitrogen gas charging device.A power source is provided for the charging device by a hand pump or an electric pump, and the charging device is connected with a pump source joint on a pressure cylinder assembly by an oil pipe; one end of the inflation valve is connected with the inflation tube, and the other end of the inflation valve is connected with the nitrogen cylinder through the input air tube; the inflation pipe is in threaded connection with an inflation input joint on the pressure cylinder assembly; one end of the high-pressure gas pipe is connected with an inflation output joint of the pressure cylinder assembly, and the other end of the high-pressure gas pipe is connected with the stop valve; one end of the spring gas pipe is connected with the stop valve, the other end of the spring gas pipe is connected with the air spring and the hydro-pneumatic spring execution component, and the air pressure meter is connected with a pressure meter joint of the pressure cylinder assembly. The invention can realize the nitrogen pressurization function manually or electrically, the volume and the weight of the monomer are far smaller than those of the existing nitrogen charging vehicle, the portability, the economy and the operability are greatly improved, and the invention can be used as a spare vehicle-mounted tool; the method can also be popularized and applied to all equipment requiring high-pressure nitrogen.

Description

Portable high-pressure nitrogen gas charging device
Technical Field
The invention belongs to the technical field of vehicle suspension, and particularly relates to a portable high-pressure nitrogen gas charging device.
Background
Suspension components such as air springs and hydro-pneumatic springs are increasingly applied to various equipment vehicles due to excellent nonlinear stiffness and damping characteristics of the suspension components, and the suspension components are used for buffering and damping of the vehicles so as to improve the driving smoothness of the vehicles. However, no matter the air spring or the hydro-pneumatic spring, the requirement of the interior of the air spring or the hydro-pneumatic spring on the pre-charging nitrogen pressure is very high, sometimes even exceeds the highest existing gas pressure in a nitrogen cylinder, so a special high-pressure inflating tool is required to meet the working requirement; in addition, limited to the current sealing technology level of high-pressure gas, air springs and hydro-pneumatic springs often need high-pressure gas supply to maintain the internal high pressure during the operation of the real vehicle, and special high-pressure inflation tools are also needed. At present, the conventional operation is to realize pressurization and air supplement by using a nitrogen charging vehicle, the nitrogen charging vehicle needs to be used in a workshop and other fields with high voltage, but the nitrogen charging vehicle has larger volume and poor portability and is not suitable for following guarantee; when the vehicle was when field work demand tonifying qi, on-the-spot no power supply condition, the car of filling nitrogen often can't use, generally uses high-pressure nitrogen cylinder to carry out high-pressure tonifying qi this moment, but uses nitrogen cylinder tonifying qi to also have obvious not enough: once the gas pressure in the nitrogen cylinder is reduced to the target air supplementing pressure required by components such as an air spring or an oil-gas spring, the nitrogen cylinder needs to be replaced, so the use frequency of the single nitrogen cylinder is limited.
Disclosure of Invention
Aiming at the problems, the invention provides a portable high-pressure nitrogen gas charging device which meets the high-pressure charging requirements of vehicle suspension parts such as air springs, hydro-pneumatic springs and the like and other high-pressure nitrogen gas equipment.
The technical scheme of the invention is as follows: a portable high pressure nitrogen gas charging device, comprising: the device comprises a pressure cylinder assembly, a hand pump or an electric pump, a nitrogen cylinder, an inflation valve, an inflation pipe, a high-pressure gas pipe, a stop valve, a spring gas pipe, an oil pipe, an input gas pipe, a barometer and the like.
The manual pump or the electric pump provides a power source for the air charging device, and the air charging device is connected with a pump source joint on the pressure cylinder assembly through an oil pipe; one end of the inflation valve is connected with the inflation tube, and the other end of the inflation valve is connected with the nitrogen cylinder through the input air tube; the inflation pipe is in threaded connection with an inflation input joint on the pressure cylinder assembly; one end of the high-pressure gas pipe is connected with an inflation output joint of the pressure cylinder assembly, and the other end of the high-pressure gas pipe is connected with the stop valve; one end of the spring gas pipe is connected with the stop valve, the other end of the spring gas pipe is connected with the air spring and the hydro-pneumatic spring execution component, and the air pressure meter is connected with a pressure meter joint of the pressure cylinder assembly.
The booster cylinder assembly comprises a piston rod assembly, a lower end cover assembly, a lower locking gland, a cylinder barrel, an inner inflation valve, a locknut, an upper locking gland, an inflation input joint, an upper end cover assembly, an inflation output joint, a pressure gauge joint and a pump source joint;
the lower end cover assembly of the piston rod assembly is locked and fixed on the cylinder barrel by virtue of the lower locking gland, the upper end cover assembly is locked and fixed on the cylinder barrel by virtue of the upper locking gland, the upper locking gland is fixed by virtue of the locknut, the inner inflation valve is positioned in the cylinder barrel, and the inner inflation valve is in threaded connection with the upper end cover assembly and is used for outputting pressurized high-pressure nitrogen into an execution part and has a reverse locking function; the inflation input joint is connected to the upper end cover assembly through threads; the inflation output joint is connected to the upper end cover assembly through threads; the pressure gauge joint is connected with the upper end cover assembly in a threaded mode and is connected with the inflation output joint in series, and the pump source joint is connected with one end of the fixed cylinder barrel in a threaded mode.
The piston rod assembly comprises a piston guide belt, a piston oil seal, an AQ seal and a piston rod, wherein the piston guide belt is used for guiding, the piston oil seal is used for sealing pressure oil in the annular cavity to prevent internal leakage, the AQ seal is used for sealing high-pressure nitrogen in a cylinder barrel of the booster cylinder assembly, and a cavity is arranged in the piston rod and used for increasing the nitrogen pre-charging volume; and a piston guide belt, an AQ seal, a piston oil seal and a piston guide belt are arranged on the piston rod from left to right.
The lower end cover assembly comprises a dustproof ring, a piston rod oil seal, a lower end cover static seal and a piston rod guide belt, wherein the dustproof ring is used for preventing dust, the piston rod oil seal and the lower end cover static seal are used for sealing high-pressure oil in the annular cavity to prevent leakage, and the piston rod guide belt is used for guiding; the outer diameter of the lower end cover assembly is provided with a lower end cover static seal, and the inner diameter of the lower end cover assembly is sequentially provided with a piston rod guide belt, a piston rod oil seal and a lower end cover static seal from left to right.
The upper end cover assembly comprises an upper end cover static seal and an upper end cover; the upper end cover static seal is arranged on the periphery of the front end of the upper end cover and used for sealing high-pressure nitrogen in the cylinder barrel.
The invention has the beneficial effects that: portable high pressure nitrogen gas aerating device is small, light in weight, economic nature are strong, and the device possesses two kinds of mode of operation: the manual mode and the electric mode can replace the existing nitrogen charging vehicle to optimize the high-pressure nitrogen charging process, the electric pump can be used as a pump source on the spot with the electric condition to improve the operation efficiency, and the manual pumping mode can be used for realizing the high-pressure nitrogen charging operation under the condition that the electric condition is not used in the field.
Drawings
FIG. 1 is a schematic view of a portable high pressure nitrogen inflator;
FIG. 2 is a cross-sectional view of a pressure cylinder assembly;
FIG. 3 is a cross-sectional view of a piston rod assembly;
FIG. 4 is a cross-sectional view of the upper end cap assembly;
FIG. 5 is a cross-sectional view of the lower endcap assembly.
In the figure:
1-pressure cylinder assembly, 2-hand pump or electric pump, 3-nitrogen cylinder, 4-inflation valve, 5-inflation pipe, 6-high pressure gas pipe, 7-stop valve, 8-spring gas pipe, 9-oil pipe, 10-input gas pipe and 11-barometer.
101-piston rod assembly, 102-lower end cover assembly, 103-lower locking gland, 104-cylinder barrel, 105-inner gas filling valve, 106-locknut, 107-upper locking gland, 108-gas filling input joint, 109-upper end cover assembly, 110-gas filling output joint, 111-pressure gauge joint, 112-pump source joint, 1011-piston guide belt, 1012-piston oil seal, 1013-AQ seal, 1014-piston rod, 1021-dust ring, 1022-piston rod oil seal, 1023-lower end cover static seal, 1024-piston rod guide belt, 1091-upper end cover static seal and 1092-upper end cover.
Detailed Description
The portable high-pressure nitrogen gas charging device of the invention is further explained with reference to the attached drawings.
The invention provides a portable high-pressure nitrogen gas charging device, which comprises: the device comprises a pressure cylinder assembly 1, a hand pump or an electric pump 2, a nitrogen cylinder 3, an inflation valve 4, an inflation pipe 5, a high-pressure gas pipe 6, a stop valve 7, a spring gas pipe 8, an oil pipe 9, an input gas pipe 10 and a barometer 11.
The pressure cylinder assembly 1 comprises a piston rod assembly 101, a lower end cover assembly 102, a lower locking pressing cover 103, a cylinder barrel 104, an inner inflation valve 105, a locknut 106, an upper locking pressing cover 107, an inflation input joint 108, an upper end cover assembly 109, an inflation output joint 110, a pressure gauge joint 111 and a pump source joint 112. Wherein:
the piston rod assembly 1 comprises a piston guide belt 1011, a piston oil seal 1012, an AQ seal 1013 and a piston rod 1014, wherein the piston guide belt 1011, the piston oil seal 1012 and the AQ seal 1013 are all mounted on the piston rod 1014, and the piston guide belt 1011, the AQ seal 1013, the piston oil seal 1012 and the piston guide belt 1011 are sequentially mounted from left to right according to the installation sequence shown in FIG. 3.
The lower end cover assembly 102 comprises a dust ring 1021, a piston rod oil seal 1022, a lower end cover static seal 1023 and a piston rod guide belt 1024, according to fig. 5, the lower end cover static seal 1023 is installed on the outer diameter of the lower end cover assembly 102, and the piston rod guide belt 1024, the piston rod oil seal 1022 and the lower end cover static seal 1023 are installed on the inner diameter of the lower end cover assembly 102 from left to right in sequence.
The upper end cap assembly 109 includes an upper end cap static seal 1091 and an upper end cap 1092. The upper end cover static seal 1091 is arranged on the periphery of the front end of the upper end cover 1092 and is used for sealing high-pressure nitrogen in the cylinder barrel 4.
The piston guide belt 1011 on the piston rod assembly 101 is used for guiding, the piston oil seal 1012 is used for sealing pressure oil in the annular cavity to prevent internal leakage, the AQ seal 1013 is used for sealing high-pressure nitrogen in the large cavity in the booster cylinder assembly 1, and the piston rod 1014 is internally provided with a cavity for increasing the nitrogen pre-charging volume; the lower end cover assembly 102 is locked and fixed on the cylinder barrel 104 by virtue of the lower locking gland 103, the dustproof ring 1021 is used for preventing dust, the piston rod oil seal 1022 and the lower end cover static seal 1023 are used for sealing high-pressure oil in an annular cavity to prevent leakage, and the piston rod guide belt 1024 is used for guiding; the upper end cover assembly 109 is locked on the fixed cylinder barrel 104 by virtue of the upper locking gland 107, the locknut 106 is used for preventing the looseness of the threads of the upper locking gland 107, and the upper end cover static seal 1091 is used for sealing high-pressure nitrogen in the large cavity of the pressure cylinder; the internal inflation valve (105) is in threaded connection with the upper end cover assembly 109 and is used for outputting pressurized high-pressure nitrogen into an execution part and has a reverse locking function; the inflation input joint 108 is connected to the upper end cover assembly 109 in a threaded manner; the inflation output connector 110 is connected to the upper end cover assembly 109 in a threaded manner; a pressure tap 111 is threadably connected to the upper end cap assembly 109. The booster cylinder assembly 1 is a core component of the whole high-pressure nitrogen gas charging device.
The manual pump or the electric pump 2 provides a power source for the air charging device, and is connected with a pump source joint 112 on the pressure cylinder assembly 1 through an oil pipe 9; the nitrogen gas cylinder 3 is a standard common part; one end of the inflation valve 4 is connected with the inflation tube 5, and the other end is connected with the nitrogen cylinder 3 through the input air tube 10; the inflation tube 5 is in threaded connection with the inflation input joint 108; one end of the high-pressure gas pipe 6 is connected with the inflation output joint 110, and the other end is connected with the stop valve 7; one end of the spring gas pipe 8 is connected with the stop valve 7, and the other end is connected with an air spring, an oil-gas spring and other execution components.
The invention is provided with an inflation valve 105 in a pressure cylinder assembly 1 for outputting high-pressure nitrogen to components such as an air spring and the like and locking the high-pressure nitrogen in the components such as the air spring and the like reversely; the inflation device is provided with an inflation valve 4 which is used for inputting low-pressure nitrogen into a large cavity in the pressure cylinder assembly 1 and locking the pressurized high-pressure nitrogen in a reverse direction; a cavity 1014 is formed inside the piston rod assembly 101 and used for increasing the inflation volume; an AQ seal 1013 is arranged on the piston rod assembly 101 and used for sealing high-pressure nitrogen; the stop valve 7 is arranged for locking and sealing the high-pressure nitrogen in the high-pressure gas transmission pipe so as to improve the use efficiency of the high-pressure nitrogen.
Air spring, hydro-pneumatic spring tonifying qi inflation process:
(a) one end of an input air pipe 10 is in threaded connection with an inflation valve 4, and the other end of the input air pipe is in threaded connection with a nitrogen cylinder 3, so that low-pressure nitrogen in the nitrogen cylinder 3 is ready to be conveyed to a large cavity of a pressure cylinder assembly 1.
(b) The high-pressure gas pipe 6 is connected with the inflation output joint 110 by screw thread.
(c) The spring gas pipe 8 is connected with an air inflation inlet of an execution component such as an air spring or a hydro-pneumatic spring and the like to prepare for inflation.
(d) The shut-off valve 7 is opened.
(e) One end of the oil pipe 9 is connected with the pump source joint 112 in a threaded manner, and the other end of the oil pipe is connected with an oil outlet of the manual pump or the electric pump 3 to prepare for next annular cavity oil filling and pressure building.
(f) And opening the nitrogen cylinder 3 to input low-pressure nitrogen into the large cavity in the pressure cylinder assembly 1. At the moment, low-pressure nitrogen gas enters the air spring and other execution parts sequentially through the inner inflation valve 105, the upper end cover 1092, the inflation output connector 110, the high-pressure gas pipe 6, the stop valve 7 and the spring gas pipe 8; meanwhile, the low-pressure nitrogen enters the barometer 11 through the inner inflation valve 105, the upper end cover 1092 and the pressure gauge joint 111 to display the initial pressure of the low-pressure nitrogen.
(g) Starting the electric pump or the manual pump 2 to inject pressure oil into the annular cavity of the booster cylinder assembly 1, pushing the piston rod assembly 101 to gradually contract towards the inside of the cylinder barrel 104, wherein pre-charged low-pressure nitrogen in the large cavity of the booster cylinder assembly 1 gradually rises in the process that the piston rod assembly 101 contracts inwards, and the rising low-pressure nitrogen enters the air spring and other execution components through the internal charging valve 105, the upper end cover 1092, the charging output connector 110, the high-pressure air pipe 6, the stop valve 7 and the spring air pipe 8 in sequence; meanwhile, the raised low-pressure nitrogen enters the barometer 11 through the internal inflation valve 105, the upper end cover 1092 and the pressure gauge joint 111 to display the initial pressure of the low-pressure nitrogen; due to the reverse single-term stopping function of the inflation valve 4, the raised low-pressure nitrogen gas cannot reversely enter the input gas pipe 10 and the nitrogen gas bottle 3 through the inflation valve 4.
(h) After the primary pressurization and inflation work of the high-pressure nitrogen is finished, the high-pressure oil in the annular cavity inside the pressurization cylinder assembly 1 is released through an oil return path of a manual pump or an electric pump, and after the high-pressure oil in the annular cavity is released into an oil return tank, the piston rod assembly 101 is pushed by the high-pressure nitrogen in the large cavity on the other side to rapidly extend out of the cylinder barrel 104 so as to wait for the next pressurization and inflation work. In the process of extending the piston rod assembly 101, the high-pressure nitrogen in the large cavity of the pressure cylinder assembly 1 also decreases gradually, but due to the reverse one-way locking effect of the internal charging valve 105, the high-pressure nitrogen after the last pressurization cannot enter the large cavity of the pressure cylinder assembly 1 through the internal charging valve 105 in a reverse direction, that is, the barometer 11 will display the gas pressure value in the execution component in real time.
(i) And continuing to perform pressurization and inflation according to the operation steps in the previous step until the internal pressure of the execution part reaches the target pressure as shown by the barometer 11, and stopping pressurization and inflation.
(j) The stop valve 7 is closed while the nitrogen gas cylinder 3 is closed.
(k) And loosening the inflating tool of the spring gas pipe 8 at the end of the executing component, releasing the pressure gas in the spring gas pipe 8, and disconnecting the inflating tool from the executing component.
(l) Releasing the pressure gas in the input gas pipe 10, disconnecting the connecting thread of the input gas pipe 10 and the inflation valve (4), and winding the input gas pipe 10 on the nitrogen gas bottle 3 for storage.
(M) the connection thread of the oil pipe 9 and the pump source connector 112 is disconnected, and the oil pipe 9 and the hand pump or the electric pump 2 are collected and stored together. Meanwhile, the pump source connector 112 is blocked by an oil block, so that the oil in the annular cavity is prevented from flowing outwards.
(N) the spring gas pipe 8, the stop valve 7 and the high-pressure gas pipe 6 are wound on the pressure cylinder assembly 1 and stored together.
The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (5)

1. A portable high-pressure nitrogen gas charging device is characterized by comprising a pressure cylinder assembly (1), a hand pump or an electric pump (2), a nitrogen gas bottle (3), a charging valve (4), a charging pipe (5), a high-pressure gas pipe (6), a stop valve (7), a spring gas pipe (8), an oil pipe (9), an input gas pipe (10) and a barometer (11);
the manual pump or the electric pump (2) provides a power source for the air charging device, and is connected with a pump source joint (112) on the pressure cylinder assembly (1) through an oil pipe (9); one end of the inflation valve (4) is connected with the inflation tube (5), and the other end is connected with the nitrogen cylinder (3) through the input air tube (10); the inflation pipe (5) is in threaded connection with an inflation input joint on the pressure cylinder assembly (1); one end of the high-pressure gas pipe (6) is connected with the inflation output joint of the pressure cylinder assembly (1), and the other end is connected with the stop valve (7); one end of a spring gas pipe (8) is connected with the stop valve (7), the other end of the spring gas pipe is connected with the air spring and the hydro-pneumatic spring execution component, and a barometer (11) is connected with a pressure meter joint of the pressure cylinder assembly (1).
2. The portable high-pressure nitrogen gas charging device as claimed in claim 1, wherein the pressure cylinder assembly (1) comprises a piston rod assembly (101), a lower end cover assembly (102), a lower locking pressing cover (103), a cylinder barrel (104), an inner charging valve (105), a locknut (106), an upper locking pressing cover (107), a charging input joint (108), an upper end cover assembly (109), a charging output joint (110), a pressure gauge joint (111), and a pump source joint (112);
the lower end cover assembly (102) of the piston rod assembly (101) is locked and fixed on the cylinder barrel (104) by virtue of the lower locking gland (103), the upper end cover assembly (109) is locked and fixed on the cylinder barrel (104) by virtue of the upper locking gland (107), the upper locking gland (107) is fixed by virtue of the locknut (106), the inner inflation valve (105) is positioned in the cylinder barrel (104), and is connected onto the upper end cover assembly (109) by virtue of threads and used for outputting pressurized high-pressure nitrogen into an execution component and simultaneously has a reverse locking function; the inflation input joint (108) is connected to the upper end cover assembly (109) in a threaded manner; the inflation output joint (110) is connected to the upper end cover assembly (109) in a threaded manner; the pressure gauge joint (111) is connected to the upper end cover assembly (109) in a threaded mode and is connected with the inflation output joint (110) in series, and the pump source joint (112) is connected to one end of the fixed cylinder barrel (104) in a threaded mode.
3. A portable high pressure nitrogen gas inflator according to claim 2 wherein the piston rod assembly (101) comprises a piston guide strip (1011), a piston oil seal (1012), an AQ seal (1013), a piston rod (1014), the piston guide strip (1011) is used for guiding, the piston oil seal (1012) is used for sealing the pressure oil in the annular cavity to prevent internal leakage, the AQ seal (1013) is used for sealing the high pressure nitrogen gas in the cylinder barrel (104) of the booster cylinder assembly (1), and a cavity is arranged in the piston rod (1014) for increasing the nitrogen gas pre-charging volume; a piston guide belt (1011), an AQ seal (1013), a piston oil seal (1012) and a piston guide belt (1011) are arranged on the piston rod (1014) from left to right.
4. The portable high-pressure nitrogen inflator according to claim 1, wherein the lower end cap assembly (102) is formed by a dust ring (1021), a piston rod oil seal (1022), a lower end cap static seal (1023), and a piston rod guide belt (1024), wherein the dust ring (1021) is used for dust prevention, the piston rod oil seal (1022) and the lower end cap static seal (1023) are used for sealing high-pressure oil in the annular cavity from leaking, and the piston rod guide belt (1024) is used for guiding; and the outer diameter of the lower end cover assembly (102) is provided with a lower end cover static seal (1023), and the inner diameter of the lower end cover assembly (102) is sequentially provided with a piston rod guide belt (1024), a piston rod oil seal (1022) and a lower end cover static seal (1023) from left to right.
5. A portable high pressure nitrogen inflator according to claim 2 wherein the upper end cap assembly (109) comprises an upper end cap static seal (1091), an upper end cap (1092); the upper end cover static seal (1091) is arranged on the periphery of the front end of the upper end cover (1092) and used for sealing the high-pressure nitrogen in the cylinder barrel 4.
CN201911029431.XA 2019-10-28 2019-10-28 Portable high-pressure nitrogen gas charging device Active CN110748790B (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112594547A (en) * 2020-12-14 2021-04-02 宜春市富锐气体有限责任公司 Novel inflation pressure reducing valve and nitrogen cylinder connecting device
CN114791086A (en) * 2022-05-24 2022-07-26 万丰镁瑞丁新材料科技有限公司 Integrated nitrogen frame device

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SU1532771A1 (en) * 1986-11-14 1989-12-30 Волжское объединение по производству легковых автомобилей Gas-charging unit
CN2611729Y (en) * 2003-02-27 2004-04-14 王祖林 Nitrogen filling trolley
CN1781744A (en) * 2004-11-29 2006-06-07 张健春 Portable nitrogen charger
CN102958823A (en) * 2010-10-29 2013-03-06 山地水利学有限公司 Recoil press
CN203835829U (en) * 2014-04-22 2014-09-17 宁波市巴克蓄能器技术有限公司 Miniature nitrogen supercharger

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Publication number Priority date Publication date Assignee Title
SU1532771A1 (en) * 1986-11-14 1989-12-30 Волжское объединение по производству легковых автомобилей Gas-charging unit
CN2611729Y (en) * 2003-02-27 2004-04-14 王祖林 Nitrogen filling trolley
CN1781744A (en) * 2004-11-29 2006-06-07 张健春 Portable nitrogen charger
CN102958823A (en) * 2010-10-29 2013-03-06 山地水利学有限公司 Recoil press
CN203835829U (en) * 2014-04-22 2014-09-17 宁波市巴克蓄能器技术有限公司 Miniature nitrogen supercharger

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112594547A (en) * 2020-12-14 2021-04-02 宜春市富锐气体有限责任公司 Novel inflation pressure reducing valve and nitrogen cylinder connecting device
CN112594547B (en) * 2020-12-14 2022-07-22 宜春市富锐气体有限责任公司 Novel inflation pressure reducing valve and nitrogen cylinder connecting device
CN114791086A (en) * 2022-05-24 2022-07-26 万丰镁瑞丁新材料科技有限公司 Integrated nitrogen frame device

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