CN208900802U - It is a kind of for eliminating the high pressure cylinder valve of remanent magnetism - Google Patents

Abstract

The utility model is a kind of for eliminating the high pressure cylinder valve of remanent magnetism, including shell and main valve, main valve slides axially in the pilot hole of shell, the unloading valve for further including main spring and being made of off-load component and electromagnet assembly, electromagnet assembly includes coil, block and guide cylinder, main spring is installed between off-load component and block and generates upward axial force to off-load component by main spring, the coil of energization generates downward electromagnetic attraction to off-load component, driving off-load component moves downward, off-load component is installed in guide cylinder and is formed and is slidably matched, the gap between block and off-load component is adjusted by the screw thread between rotary block and electromagnet housing, magnetism-isolating loop is provided on block, the remanent magnetism after electromagnet assembly power-off is eliminated by magnetism-isolating loop, valve is closed rapidly, gas can be through during flowing out high pressure gas cylinder Gas outlet is flowed to by the channel at electromagnet assembly center, absorbs the heat generated in electromagnet assembly galvanization, extends service life of equipment.

Description

It is a kind of for eliminating the high pressure cylinder valve of remanent magnetism

Technical field

The utility model belongs to high pressure gas cylinder technical field, and in particular to a kind of for eliminating the high pressure cylinder valve of remanent magnetism.

Background technique

The vehicle-mounted hydrogen storage mode of hydrogen powered vehicle mainstream is that high pressure shape is stored in high pressure gas cylinder using high pressure gas cylinder at present The hydrogen of state, the mating cylinder valve of high pressure gas cylinder, for controlling the inflation/deflation of high pressure gas cylinder.Under normal conditions, cylinder valve is a kind of integrated The pile-up valve of the components such as solenoid valve, temperature safety valve, manual switch, filter, work characteristics include: great sealing pressure Poor range, wider operating temperature range, very long stream time and service life.But in practical applications, electromagnet After long-play, still there is remanent magnetism after a loss of power, prevent solenoid valve influences the response of valve from closing rapidly after a loss of power Time is unsatisfactory for the control requirement that control system supplies fuel, is badly in need of solving this problem.

Utility model content

Aiming at the problems existing in the prior art, the utility model provides a kind of for eliminating the high pressure cylinder valve of remanent magnetism.

In order to solve the above technical problems, the utility model adopts the following technical solution:

It is a kind of for eliminating the high pressure cylinder valve of remanent magnetism, including shell and main valve, the high pressure cylinder valve passes through the spiral shell on shell Line is fixedly connected with high pressure gas cylinder, and for controlling the inflation/deflation of high pressure gas cylinder, main valve slides axially in the pilot hole of shell The unloading valve that realization opening and closing further includes main spring and is made of off-load component and electromagnet assembly, electromagnet assembly are built-in Layout is in shell, and main valve is opened when electromagnet assembly is powered, and gas is flowed by being located at the channel of electromagnet assembly central axis Gas outlet on shell, electromagnet assembly include coil, block and guide cylinder, and the metallic matrix of off-load component is magnetic material Material, off-load component are installed in guide cylinder and are formed therebetween and be slidably matched, main spring be installed on off-load component and block it Between and upward axial force generated to off-load component by main spring, the coil of energization generates downward electromagnetism to off-load component and inhales Power drives off-load component to move downward until restraining position, main valve are transported downwards with off-load component greater than the axial force of main spring It is dynamic, the magnetism-isolating loop for solving remanent magnetism after electromagnet assembly powers off is provided between off-load component lower end and block, magnetism-isolating loop is Non-magnetic material.

Further, the shell includes that an air inlet, a gas outlet and a cylinder interface, cylinder interface pass through Screw thread is connected and fixed with high pressure gas cylinder whorl of bottleneck, by the bottle sealing circle and bottleneck sealing ring between shell and high pressure gas cylinder Realize sealing between the two, air inlet, gas outlet are communicated with cylinder interface, between air inlet, gas outlet and cylinder interface It is set side by side with cylinder valve main channel and bleed passage, is safety valve inlet channel, bottle between safety valve exhaust port and cylinder interface Valve main channel is used for inflation/deflation, is provided with unloading valve, main valve and cutting hand valve, passes through the control system of switching on or off electricity of electromagnet assembly It is opened and closed, and bleed passage connects gas outlet and gas cylinder inner cavity, is provided with deflation hand valve, manually controllable deflation, safety valve Inlet channel connection safety valve exhaust outlet and gas cylinder inner cavity, are arranged relief valve assembly thereon, and reaching assigned temperature can automatically turn on, And gas in gas cylinder is vented by safety valve exhaust port.

Further, the electric connector is divided into outer end and inner end, and outer end and inner end have positive terminal and cathode to connect The binding post of terminal, identical polar is held on, and the binding post of opposite polarity keeps insulation, and electric connector is fixedly installed in shell On in the cable aperture that is stepped, realize sealing by the first retaining ring and the first sealing ring between electric connector side and shell, Two binding posts of anode, negative terminal of electric connector inner end are connected and fixed with two lead-out wires of electromagnet assembly respectively, It is held on, two binding posts of anode, negative terminal of electric connector outer end are to retain interface, are supplied in use process with outside Electric circuit connection.

Further, on the cylinder valve main channel of the shell, perpendicular to axis, it is provided with the primary seal seam allowance of annular, together Axis is provided with pilot hole in cylinder valve main channel, and for installing main valve, cylinder valve main channel is coaxially provided with electromagnet mounting hole, uses In installation electromagnet assembly.

Further, it is provided with primary seal seam allowance on the shell, sealing ring and sealing seam allowance, off-load are provided on main valve It is provided with diaphragm seal at the top of component, when high pressure cylinder valve is in close state, sealing ring contacts with primary seal seam allowance and keeps compressing State, diaphragm seal with sealing seam allowance contact and keeps impaction state, be sealed, primary seal seam allowance top cross-section be it is arc-shaped, Inside is straight line with axis parallel, and outside is the oblique line angled with central axes, the straight line and oblique line with top Portion's circular arc is tangent, and from top to bottom, sectional area is gradually increased.Preferably, oblique line and central axes angle are 20 ° or so.

Further, the main valve is installed in the pilot hole of shell, can be slid axially in pilot hole, the two Unilateral radial clearance is 0.02~0.03mm, and main valve includes the first, second two end faces, an outer circle and a unloading holes, main The first end face of valve is sealing surface, and normally, which can be higher nonmetallic using intensity, and second end face is stopped for off-load Mouthful, off-load bore dia is much smaller than primary seal seam allowance diameter, usually 0.3~0.4mm, and ream has a plane in outer circle, is used for gas Circulation, unloading hole and off-load seam allowance are in main valve central axis, off-load seam allowance end face and main valve central axis upright.

Further, the off-load component is gathered around there are two end face and an outer circle, and the metallic matrix of off-load component uses magnetic Property material be made, the first end face of off-load component is sealing surface, and common, sealing surface uses nonmetallic materials, using compound plus Work technique is fixed on off-load component metals matrix, and second end face is planar annular, and off-load component has central through hole, from second end Face extends near first end face, and first end face nearby exports justifies cylindrical side outside.

Further, the first pin shaft hole that second end face has one perpendicular to main shaft, the off-load are located on the main valve Component is located at the second pin shaft hole that first end face has one perpendicular to main shaft, and main valve is connect with off-load component by pin shaft, pin shaft It is interference between pin shaft and the second pin shaft hole also cross the first pin shaft hole on main valve, the second pin shaft hole on off-load component Cooperation, the first pin shaft bore dia are greater than pin shaft outer diameter, are clearance fit between main valve and off-load component, can occur along axial phase To sliding, maximum relative displacement amount is greater than the half of off-load bore dia.

Further, the first pin shaft bore dia 0.3~0.4mm big compared with pin shaft outer diameter, it should be ensured that off-load component first end face Rear pin shaft is contacted with main valve second end face and the first pin shaft hole is not in contact and interaction force, main valve and the off-load component Between unilateral radial clearance about 0.05~0.1mm, can occur between unloading valve and main valve around radially and tangentially small range rotate.

Further, the electromagnet assembly includes electromagnet, end cap, electromagnet housing, guide cylinder, coil (containing coil Skeleton), locking nut, block, lead-out wire, be installed in the electromagnet mounting hole of shell, electromagnet housing, end cap, block are equal For magnetic material, coil is fixedly installed in electromagnet housing inner cavity, and end cap is fixedly installed in electromagnet housing first end face, electromagnetism Iron-clad body second end face is equipped with internal thread hole, and the axis of thread is coaxial with electromagnet housing, and block is open circles column structure, block First end face be plane, have helicitic texture on the outside of second end face, centre bore circulation area should be not less than main channel minimum equivalent Circulation area, block are installed on electromagnet assembly center and by the interior of the screw thread of second end face and electromagnet housing second end face Threaded hole is connected and fixed, and passes through the relative position between the adjustable block of rotary block and electromagnet housing, adjustable gear Primary clearance between block and off-load component, locking nut are connect with the nut of block second end face, one end face and electromagnetism Iron-clad body second end face is contacted and is compressed, and main valve is opened when electromagnet assembly is powered, and gas is by being located at electromagnet assembly center The 6th channel flow to the gas outlet on shell, for absorbing the heat generated in electromagnet assembly galvanization.

Further, the guide cylinder is thin wall typed structure, and outer diameter is identical as internal coil diameter, outside internal diameter and off-load component Diameter is identical, keeps radial clearance about 0.05~0.1mm with off-load component outer diameter, guide cylinder is that non-magnetic material is made, Ke Yixuan With anti-attrition good, easy to process aluminium bronze or tin bronze, the guide cylinder is connected and fixed with block, can be turned with block Dynamic and axial movement.

Further, described every magnetic is badly that non-magnetic material is made, is fixedly installed in block first end face, the magnetism-isolating loop With a thickness of 0.1mm, for solving the remanent magnetism after electromagnet assembly powers off.

Further, centre bore, the center-hole diameter and block of off-load component are provided on the block and off-load component Center bore is identical.

Further, after the main valve and electromagnet assembly are installed, sliding is formed between off-load component and guide cylinder Cooperation, off-load component second end face and block first end face are provided with the spring base of installation main spring, main spring both ends difference Compressive state is contacted and kept with aforementioned spring base, axial pre tightening force is provided, and off-load component first end face is pressed on main valve On the off-load seam allowance of biend, main spring pretightning force be greater than frictional force between main valve and shell, off-load component and guide cylinder it With initial installation gap between off-load component and block is greater than off-load bore dia, and main spring is installed on off-load component and block Between and upward axial force generated to off-load component by main spring, the coil of energization generates downward electromagnetism to off-load component Suction drives off-load component to move downward, main valve is moved downward with off-load component greater than the axial force of main spring.

Further, the cutting hand valve has both ends, and first end face is sealing surface, and second end face is T-slot, with cutting hand The T forming head of handle cooperates, and cutting hand valve is installed in shell, can slide along the axis, and the two is slidably matched face using the close of adaptation Sealing is realized in seal, corresponding, is provided with seal receptacle on shell cylinder valve main channel, is matched with cutting hand valve first end face It closing, it can be achieved that Open-close sealing, cutting handle is connect by screw thread with shell, and first end face is operating side, towards hull outside, the Biend is T forming head, is flexibly connected with the T-slot of cutting hand valve second end face, and activity between hand valve and cutting handle of cutting off connects It connects and the two can occur around axial relative rotation, but axial opposite sliding cannot occur, rotate clockwise cutting hand Handle, by connection screw thread be converted into cutting handle and cut off hand valve axial movement so that cutting hand valve first end face with Seal receptacle separation on the open close road of shell master, cylinder valve main channel are opened, and are connected to inside gas outlet and high pressure gas cylinder, conversely, the inverse time Needle rotation cutting handle, cuts off hand valve first end face with the seal receptacle on shell cylinder valve main channel and contacts, compresses and realize sealing, Cylinder valve main channel is closed, shell cut-off port and high pressure gas cylinder interior separations, can not realize that high pressure gas cylinder fills by cylinder valve main channel Deflating action.

Further, the deflation hand valve has both ends, and first end face is sealing surface, and second end face is T-slot, deflation hand valve Be installed in shell, can slide along the axis, the two be slidably matched face using sealing ring realize sealing, it is corresponding, in the shell There is seal receptacle on body bleed passage, cooperates with the deflation hand valve first end face, it can be achieved that Open-close sealing, deflation handle pass through spiral shell Line is connect with shell, and first end face is operating side, and towards hull outside, second end face is T forming head, with deflation hand valve second end face T-slot be flexibly connected, be flexibly connected between deflation hand valve and deflation handle, the two can occur around axial relative rotation, But axial opposite sliding cannot occur, deflation handle is rotated clockwise, converts deflation handle for the rotation of connection screw thread It deflates logical with the axial movement of deflation hand valve so that deflation hand valve first end face is separated with the seal receptacle on shell bleed passage Road is opened, and is connected to inside the shell gas outlet and high pressure gas cylinder, conversely, the deflation handle is rotated counterclockwise, deflation hand valve First end face contacts, compresses and realizes sealing with the seal receptacle on shell bleed passage, and bleed passage is closed, and the shell is deflated Mouthful with high pressure gas cylinder interior separations, gas will not flow out in high pressure gas cylinder.

Compared with prior art, of the utility model to have the beneficial effect that

The utility model discloses a kind of for eliminating the high pressure cylinder valve of remanent magnetism, including shell, deflation hand valve, electrical connection Device, main valve, pin shaft, off-load component, electromagnet assembly, main spring, magnetism-isolating loop, internal filter, external filter, pressure cap, cutting hand Valve, cutting handle, deflation handle, unloading valve includes off-load component and electromagnet assembly and is therebetween to be slidably matched, external Power supply circuit is connect and is connected with electromagnet assembly by electric connector, and main valve is installed in the pilot hole of shell and in pilot hole It inside slides axially, main valve is flexibly connected with off-load component by pin shaft, between the face of being slidably matched between main valve and off-load component is Gap cooperation, axially opposed can slide, and be interference fit between pin shaft and off-load component, main spring is installed on off-load component and electricity Between magnet assemblies and initial compression force is provided, the metallic matrix of off-load component is magnetic material, cutting handle and cutting hand valve It is flexibly connected and occurs axial relative rotation, deflation handle with deflation hand valve by being flexibly connected, and deflation hand valve is on shell edge Axis sliding.Provided by the utility model a kind of for eliminating the high pressure cylinder valve of remanent magnetism, primary seal seam allowance is variable cross-section product structure, The sealing in big pressure differential range can effectively be adapted to；Primary seal seam allowance and pilot hole are on Same Part-shell, handling ease Guarantee geometric tolerance precision, processing technology is good；It is flexibly connected between main valve and off-load component using pin shaft, off-load component compresses When main valve, contact and interaction force are not generated between pin shaft and the pin shaft hole of main valve, is avoided and guide cylinder, electromagnet mounting hole Between multi-guide, self-positioning performance is good, repetitive positioning accuracy is high, and sealing reliability is good；Between block and off-load component Magnetism-isolating loop is increased, influence of the remanent magnetism to valve closing performance after power-off is reduced；Pass through screw thread between block and electromagnet housing Connection, by turning screw thread, initial air gap between adjustable block and off-load component, and pass through locking after regulating Nut fixes position, increases valve regulated performance, achieves the beneficial effects such as good seal performance, reliable in action, modulability be good.

Detailed description of the invention

Fig. 1 is the A-A sectional structure chart of the utility model Fig. 2；

Fig. 2 is the B-B sectional structure chart of the utility model Fig. 1；

Fig. 3 is the utility model lower bottle valve main channel sealed structure chart in off position；

Fig. 4 is the primary seal seam allowance cross section structure figure of the utility model；

Fig. 5 is the structure chart of the electromagnet assembly of the utility model；

Fig. 6 is unloading valve state and gas flow schematic diagram when the utility model is inflated；

Fig. 7 is the unloading valve open state and gas flow schematic diagram of the utility model；

Fig. 8 is the main valve open state and gas flow schematic diagram of the utility model；

Wherein, 1- shell；1a- primary seal seam allowance；1b- first seals seam allowance；1c- second seals seam allowance；1d- pilot hole； 2- deflation hand valve；3- electric connector；The first retaining ring of 4-；The first sealing ring of 5-；6- bottle sealing circle；7- main valve；7a- sealing ring； 7b- seals seam allowance；7c- unloading hole；7d- limit hole；8- pin shaft；9- off-load component；9a- diaphragm seal；9b- off-load component lower end Face；10- electromagnet assembly；10a- end cap；10b- electromagnet housing；10c- guide cylinder；10d- coil rack；10e- coil； 10g- block；10h- locking nut；10f- magnetism-isolating loop upper surface；The second retaining ring of 11-；12- bottleneck sealing ring；13- main spring； 14- magnetism-isolating loop；15- internal filter；16- circlip for shaft；The first circlip for hole of 17-；The second hole 18- elasticity gear Circle；19- external filter；The second sealing ring of 20-；21- third retaining ring；22- deflation handle；23- pressure cap；24- cuts off handle；25- Cut off hand valve；26- fourth gear circle；27- third sealing ring；28- relief valve assembly；100- high pressure gas cylinder；101- gas cylinder inner cavity； 102- air inlet；The gas outlet 103-；104- cylinder interface；105- cylinder valve main channel；105a- first passage；105b- first is logical Road；105d- third channel；105e- fourth lane；105f- Five-channel；The 6th channel 105g-；The channel 105h- I；106- is logical Road；106a- first passage I；106b- second channel II；107- safety valve exhaust port.

Specific embodiment

To further illustrate each embodiment, the utility model is provided with attached drawing.These attached drawings are in the utility model discloses A part of appearance mainly to illustrate embodiment, and can cooperate the associated description of specification former come the running for explaining embodiment Reason.Cooperation refers to these contents, and those of ordinary skill in the art will be understood that other possible embodiments and sheet are practical new The advantages of type.Component in figure is not necessarily to scale, and similar component symbol is conventionally used to indicate similar component.

Now in conjunction with the drawings and specific embodiments, the present invention will be further described.

As shown in figures 1-8, a kind of for eliminating the high pressure cylinder valve of remanent magnetism, including shell 1, high pressure gas cylinder 100, cylinder valve master be logical Road 105, deflation hand valve 2, electric connector 3, the first retaining ring 4, the first sealing ring 5, bottle sealing circle 6, main valve 7, pin shaft 8, off-load Component 9, electromagnet assembly 10, the second retaining ring 11, bottleneck sealing ring 12, main spring 13, magnetism-isolating loop 14, internal filter 15, axis are used Circlip 16, the first circlip for hole 17, the second circlip for hole 18, external filter 19, the second sealing ring 20, third Retaining ring 21, deflation handle 22, pressure cap 23, cutting handle 24, cutting hand valve 25, fourth gear circle 26, third sealing ring 27 and safety Valve module 28, high pressure cylinder valve is connected and fixed by the screw thread on shell 1 with high pressure gas cylinder 100, for controlling high pressure gas cylinder 100 Inflation/deflation, cylinder valve main channel 105 has been arranged in parallel on high pressure cylinder valve, and cylinder valve main channel 105 is used for inflation/deflation, is provided with and unloads Lotus valve, main valve 7 and cutting hand valve 25, by its opening and closing of the control system of switching on or off electricity of electromagnet assembly 10, bleed passage connects gas outlet 103 and gas cylinder inner cavity 101, it is provided with deflation hand valve 2, manually controllable deflation, the high pressure cylinder valve installation of the utility model It is used in a system, upstream is connect with inflating gas cylinder pipeline and charge valve, and downstream is subtracted by blowdown piping and locked The connection such as pressure valve and low-voltage solenoid valve, these contents do not influence the utility model implementation not within the scope of this utility model The explanation of mode, therefore do not embodied in Fig. 1.

Fig. 1 and Fig. 2 is the structural schematic diagram of high pressure cylinder valve, and main view Fig. 1 is the A-A cross-sectional view of Fig. 2, and top view Fig. 2 is The B-B cross-sectional view of Fig. 1, the state diagram as shown in the figure that high pressure gas cylinder bottleneck is installed on for high pressure cylinder valve.Specifically, shell 1 includes One gas outlet 103, one of air inlet 102, one cylinder interface 104, air inlet 102, gas outlet 103, safety valve exhaust port 107 communicate with cylinder interface 104, the bottleneck spiral shell that high pressure cylinder valve passes through cylinder interface 104 and high pressure gas cylinder 100 on shell 1 Line is connected and fixed, the bottleneck of 100 bottleneck of bottle sealing circle 6 and high pressure gas cylinder by being set to 100 bottle mouth position of high pressure gas cylinder Sealing ring 12 guarantees the good sealing property between cylinder valve and high pressure gas cylinder 100, air inlet 102, gas outlet 103 and cylinder interface Cylinder valve main channel 105 and bleed passage are set side by side between 104, air inlet 102 is connect with upstream supply air line, gas outlet 103 connect with downstream pipe.

Cylinder valve main channel 105 be duplex channel, high pressure gas cylinder 100 during being filled and deflated by working media from cylinder valve master Channel 105 passes through, and cylinder valve main channel 105 passes through external filter 19, main valve 7, off-load component by air inlet 102, gas outlet 103 9, electromagnet assembly 10, internal filter 15 extend to gas cylinder inner cavity 101, be arranged in series on cylinder valve main channel 105 there are two Shut-off valve: main valve 7 and cutting hand valve 25, wherein main valve 7 is normally off, and by the control system of switching on or off electricity of electromagnet assembly 10, it is opened Closed state, cutting hand valve 25 are normally open, its direct manually controllable open/close states.

Electric connector 3 divides for outer end and inner end, and there are positive terminal and negative terminal, identical polar in outer end and inner end Binding post be held on, the binding post of opposite polarity keeps insulation, and electric connector 3 is fixedly installed on shell 1 and is stepped Cable aperture in, inside by high pressure gas active force, between 3 side of electric connector and shell 1 rely on the first retaining ring 4 and first Sealing ring 5 realize sealing, two binding posts of anode, negative terminal of 3 inner end of electric connector respectively with electromagnet assembly 10 Two lead-out wires are connected and fixed, are held on, and two binding posts of anode, negative terminal of 3 outer end of electric connector are to retain to connect Mouthful, in use process with external power supply circuit connection.Preferably, there are one spare electric connector, electrical connections for the utility model Device 3 is mutually backups with spare electric connector and the two structure is identical, anode, the negative terminal two of spare electric connector inner end Binding post is connected and fixed with two lead-out wires of electromagnet assembly 10 respectively, is held on.

Fig. 3 is the sealed structure chart of lower bottle valve main channel 105 in off position, and there are the sealing structures of parallel relationship at two Are as follows: sealing, off-load component 9 between shell 1 and main valve 7 and the sealing between main valve 7 have good sealing performance.Meanwhile To further increase sealing effect, primary seal seam allowance 1a is provided on shell 1, corresponding position is provided at two and seals on main valve 7 Structure, respectively sealing ring 7a and sealing seam allowance 7b, are provided with diaphragm seal 9a at the top of off-load component 9, are in and close in high pressure cylinder valve Under closed state, main valve 7 is in high pressure gas cylinder 100 under the action of high pressure gas, by upward axial force, the axial force and to On initial tension of spring collective effect under, sealing ring 7a and primary seal seam allowance 1a contact and keep impaction state, are formed certain Seal pressure, prevent high pressure gas from leaking to cylinder valve main channel 105.Similarly, off-load component 9 is in high pressure gas cylinder 100 Under high pressure gas effect, by upward axial force, under the axial force and the collective effect of upward initial tension of spring, sealing Piece 9a contacts and keeps impaction state with sealing seam allowance 7b, forms certain seal pressure, prevents high pressure gas from flowing to cylinder valve master Channel 105 leaks.

Preferably, the polyimides equal strength that sealing ring 7a can use compressive strength reach 150MPa is higher nonmetallic Material is made, and diaphragm seal 9a can be using nonmetallic materials systems such as intensity slightly lower polytrifluorochloroethylene or perfluoroethylene-propylene At, between non-metal workpiece and metallic matrix use hot press forming technology, prevent from collaborating.

On the cylinder valve main channel 105 of shell 1, perpendicular to axis, it is provided with annular primary seal seam allowance 1a, coaxially in cylinder valve master Channel 105 is provided with pilot hole 1d, interior to install main valve 7, and primary seal seam allowance 1a and pilot hole 1d are respectively positioned on shell 1, coaxially Cylinder valve main channel 105 is provided with electromagnet mounting hole, for installing electromagnet assembly 10, as shown in figure 4, in terms of section, it is main Seal seam allowance 1a top cross-section be it is arc-shaped, inside is straight line with axis parallel, and outside is angled with central axes Oblique line, straight line and oblique line are tangent with top arc, and from top to bottom, sectional area is gradually increased, in seal process, with In high pressure gas cylinder 100 gas pressure increase, the axial compressive force between sealing ring 7a and primary seal seam allowance 1a is increasing, uses After the structure, as axial compressive force increases, sealing ring 7a deflection increases and sealing ring 7a forced area increases, can effectively it subtract The compression incrementss of sealing ring 7a during small pressure rise guarantee that sealing ring 7a is not easy to be subject to crushing under high pressure, meet big Seal request in pressure differential range.Preferably, primary seal seam allowance 1a top arc radius is 0.25mm, outside and axis wire clamp Angle is 20 °, and seam allowance total height is 0.5mm, and seam allowance surface roughness is Ra0.4.

It is sealed between shell 1 and main valve 7, between off-load component 9 and main valve 7, there is twice Open-close sealing structure, it is main On valve 7 be located at second end face have one perpendicular to main shaft the first pin shaft hole, off-load component 9 be located at first end face have one vertically In the second pin shaft hole of main shaft, main valve 7 is connect with off-load component 9 by pin shaft 8, and pin shaft 8 is also cross the on main valve 7 Limit hole 7d is arranged on main valve 7, is between pin shaft 8 and the second pin shaft hole for the second pin shaft hole on one pin shaft hole and off-load component 9 Interference fit, the first pin shaft bore dia is greater than 8 outer diameter of pin shaft, and under original state, off-load component 9 is in initial tension of spring and gas pressure Under power effect, keep impaction state with main valve 7, the upper and lower gap of pin shaft 8 and 7 upper limit hole 7d of main valve be respectively h10 and Gap between h20, the 14 upper surface 10f of lower end surface 9d and magnetism-isolating loop of off-load component 9 is h30, in order to ensure off-load component 9 with Certain normal pressure is kept to realize sealing between main valve 7, gap h10 has to be larger than 0.

It is clearance fit between main valve 7 and off-load component 9, is interference fit, Ke Yifa between pin shaft 8 and off-load component 9 Raw axially opposed sliding, maximum relative displacement amount are greater than the half of unloading hole 7c diameter, for improve 7 guiding accuracy of main valve and Sealing performance；In the initial state, pin shaft 8 is not contacted with the side wall of limit hole 7d, the sliding between main valve 7 and off-load component 9 Mating surface is clearance fit, and the unilateral radial clearance in face that is slidably matched between main valve 7 and off-load component 9 is 0.05~0.1mm, pin shaft Between 8 and the limit hole 7d of main valve 7 the sum of radial clearance be 0.3~0.4mm, main valve 7 in axial movement, guiding by Matched pilot hole 1d is provided on shell 1, ensures the end face of primary seal seam allowance 1a with pilot hole 1d's in machining process Axis verticality in 7 closing process of main valve, passes through this flexible connection, it is possible to reduce multiple matching relationship brings the weight of main valve 7 Multiple constraint, improves 7 guiding accuracy of main valve and sealing performance, while can simplify technique, reduces difficulty of processing.

Preferably, the first pin shaft bore dia 0.3~0.4mm big compared with pin shaft outer diameter, it should be ensured that 9 first end face of off-load component with 7 second end face of main valve contacts rear pin shaft 8 and the first pin shaft hole is not in contact and interaction force, between unloading valve and main valve 7 It can occur to rotate around radially and tangentially small range.

Electromagnet assembly 10 and off-load component 9 have collectively constituted unloading valve, are equivalent to a kind of Direct Action Type in the prior art High-pressure solenoid valve, off-load component 9 include two end faces, an outer circle rod structure, off-load component 9 lower end surface 9b, off-load component For 9 lower end surface 9b for being in contact with magnetism-isolating loop 14, the outside cylinder metallic matrix of off-load component 9 is magnetic material, off-load component 9 The first end face at top is sealing surface, and sealing surface uses nonmetallic materials, is fixed on the metallic matrix of off-load component 9, bottom Second end face be planar annular, the centre bore with block 10g same apertures is provided on off-load component 9, is extended from second end face To first end face, first end face is exported in outer cylindrical side, and electromagnet assembly 10 is installed on shell 1 and passes through pressure cap Threaded connection between 23 and shell 1 is fixed, and is slidably matched between off-load component 9 and electromagnet assembly 10, main spring 13 are installed between the block 10g on off-load component 9 and electromagnet assembly 10, are in pre-compressed state, provide initial compression force, Main valve 7 is installed in pilot hole 1d, can be slid axially in pilot hole 1d, the unilateral radial clearance of the two be 0.02~ 0.03mm, main valve 7 are gathered around there are two end face, an outer circle, a unloading hole, and 7 first end face of main valve is sealing surface, normally, should Sealing surface can be higher nonmetallic using intensity, and second end face is off-load seam allowance, and unloading hole 7c diameter stops much smaller than primary seal Mouthful 1a diameter, usually 0.3~0.4mm, ream has a plane in outer circle, circulates for gas, 7 center of main valve is provided with unloading hole 7c, is the outlet of unloading valve, and connection gas cylinder higher-pressure region and outside low pressure area, unloading hole 7c have off-load close to 9 one end of off-load component Seam allowance, the off-load seam allowance and off-load component 9 of main valve form Open-close sealing pair, and unloading hole 7c and off-load seam allowance are in main valve 7 Mandrel line, off-load seam allowance end face and 7 central axis upright of main valve.

Electromagnet assembly 10 includes end cap 10a, electromagnet housing 10b, electromagnet, guide cylinder 10c, coil rack 10d, line It encloses 10e, block 10g and locking nut 10h, under coil 10e energized state, downward electromagnetic attraction is generated on off-load component 9, The electromagnetic attraction is greater than the axial pre tightening force of main spring 13, overcomes spring force that off-load component 9 is driven to move downwardly to restraining position, Gap h30 becomes 0, and after coil 10e power-off, electromagnetic attraction disappears, and under the upward responsive to axial force of main spring 13, pushes off-load Component 9 moves upwards reset, and the magnetism-isolating loop 14 of thickness 0.1mm is provided between off-load component 9 and block 10g, and magnetism-isolating loop 14 is solid Dingan County is in contact on block 10g and with the lower end surface 9b of off-load component 9, and magnetism-isolating loop 14 is non-magnetic material, can effectively solve The influence of remanent magnetism after certainly coil 10e is powered off improves product and closes reset reliability.Preferably, guide cylinder 10c is using selection anti-attrition Property good, easy to process aluminium bronze or tin bronze are made.

As shown in fig. 6, electromagnet assembly 10 can be by cylinder valve to high pressure gas cylinder 100 in energized state and obstructed electricity condition Inflation.Specifically, electromagnet assembly 10 is in the energized state, main valve 7 is in the open state, air inlet 102 and gas cylinder inner cavity 101 Between form access, inflating gas cylinder may be implemented；For electromagnet assembly 10 under obstructed electricity condition, gas first passes around air inlet 102, external filter 19, first passage 105a reach cylinder valve main channel 105, and 7 outside pressure of main valve is higher than inside pressure (etc. at this time In 101 pressure of gas cylinder inner cavity), under downward gas out-of-balance force effect, main valve 7, off-load component 9 is pushed to move downward, after And main spring 13 is compressed to restraining position, main valve 7 is separated with the valve seat on shell 1, cylinder valve main channel 105 and fourth lane 105e It connects, gas continues through fourth lane 105e, Five-channel 105f, the 6th channel 105g and internal filter 15 into gas cylinder Inflation is realized in inner cavity 101.After inflating, by the gas source of external cutting air inlet 102, the inside and outside pressure at both sides of main valve 7 is flat Weighing apparatus, downward gas out-of-balance force disappear, and main valve 7 and off-load component 9 move up under the responsive to axial force of main spring 13 Restraining position, cylinder valve main channel 105 seal, and prevent gas from flowing outward.

Unloading valve open state and gas flow direction figure as shown in Figure 7, electromagnet assembly 10 are powered under state, The electromagnetic field that electromagnet generates applies downward electromagnetic attraction to off-load component 9, overcomes upward initial tension of spring, drives off-load Component 9 moves downward, until gap h21 becomes 0 from h20, reaches restraining position, diaphragm seal 9a is separated with sealing seam allowance 7b, unloaded Lotus valve is opened, and high pressure gas passes through internal filter 15, channel 105g, channel 105f and unloading hole 7c, reaches gas outlet 103, this When, gas outlet 103 to downstream pipe chamber pressure constantly increases, and main valve 7 is under the effect of gas out-of-balance force, while by downward Electromagnetic attraction and upward gas out-of-balance force, electromagnetic attraction is not enough to that main valve 7 is driven to move downward, and main valve 7 remains It is in close contact with primary seal seam allowance 1a, gap h31=h30-h20, aperture h41 ≈ h20 when unloading valve is opened, circulation latus rectum is The diameter d1 of unloading hole 7c, in order to guarantee that gas flows smoothly, it should be ensured that aperture h41 > d1*0.25.

Under unloading valve open state, downstream pipe chamber pressure is constantly increased, and the upward gas that main valve 7 is subject to is uneven Power is gradually reduced, until the out-of-balance force is less than downward electromagnetic attraction, downstream pipe pressure and high pressure gas cylinder 100 is interior at this time Cavity pressure basically reaches balance, under the action of electromagnetic attraction, overcomes spring axial force, main valve 7 is with off-load component 9 and pin shaft 8 It moves downwardly together, until the lower end surface 9b of off-load component 9 is contacted with magnetism-isolating loop 14, main valve 7 is fully opened, 7 opening state of main valve As shown in Fig. 8, high pressure gas passes through the 6th channel 105g, Five-channel 105f, fourth lane 105e, for state and gas flowing Triple channel 105d and cylinder valve main channel 105 enter gas outlet 103 and downstream pipe, to avoid being powered for a long time in electromagnet Life of product and reliability are influenced because generating amount of heat and temperature rise in journey, electromagnet is laid out in gas cylinder by the utility model Portion, built-in, main valve 7 can be opened in the case of electromagnet is powered, and gas is flowed by i.e. the 6th channel 105g of electromagnet central axis Electromagnet galvanization can be fully absorbed in high pressure gas cylinder 100 in pressure decline and the gas process of circulation to gas outlet 103 The heat of middle generation can be effectively improved electromagnet heat condition, extend life of product, improve reliability.

In 7 opening process of main valve, the relative position between off-load component 9 and main valve 7 is constant, i.e., gap between the two H12=h11=h10+h20, h42=h41 ≈ h20, main valve aperture h52 ≈ h31=h30-h20.Gap under original state H30 directly influences the main valve aperture and electromagnet suction size of product, and gap h30 increases, and main valve aperture increases, but electric Magnet suction is substantially reduced, and depositing can not overcome gas pressure and initial tension of spring to open unloading valve completely in a high voltage state Risk, gap h30 reduces, and electromagnet suction increases, but main valve aperture reduces therewith, may be unable to satisfy circulation area and want It asks.In order to solve the above technical problems, gap h30 is designed as adjustable item by the utility model, as shown in figure 5, block 10g passes through Screw thread is connect with electromagnet housing 10b, and when rotating clockwise block 10g, gap h30 reduces, when rotating counterclockwise block 10g, Gap h30 increases, and when being adjusted to suitable position, rotates clockwise locking nut 10h and extremely contacts and press with electromagnet housing 10b Tightly, the relative position of locking stop 10g and electromagnet housing 10b, it is ensured that gap h30 does not become in the cylinder valve course of work Change.

Internal filter 15 is fixed on 104 end of shell cylinder interface, after cylinder interface 104 is filtered by internal filter 15 It is connected to gas cylinder inner cavity 101, the filtering accuracy of internal filter 15 should be not less than 10 μm.External filter 19 is tubular structure, outer mistake The both ends of filter 19 are entity flange and in-between section is the filter screen of tubulose, and external filter 19 passes through on both ends entity flange Through-hole and the first circlip for hole 17 matched respectively with both ends through-hole and the second circlip for hole 18 installation fix In in 1 one unthreaded hole of shell, air inlet 102 is directly connected to gas outlet 103 by the inside of external filter 19,102 He of air inlet Gas outlet 103 is connected to by the side wall strainer of external filter 19 with gas cylinder inner cavity 101, and internal filter 15 passes through circlip for shaft 16 are fixed on pressure cap 23, and unthreaded hole internal diameter should be greater than 19 outer diameter of external filter, by unthreaded hole inner wall, 19 outer wall of external filter, first Circlip for hole 17 and the second circlip for hole 18 collectively constitute an annular chamber, annular chamber by cylinder valve main channel 105, Bleed passage is connected to cylinder interface 104, and shell air inlet 102, gas outlet 103 are directly communicated with 19 inner hole of external filter, with Annular chamber is connected to after being filtered by 19 side wall of external filter.

Cutting handle 24 is fixedly connected by screw thread with shell 1, and cutting hand valve 25 is hand valve open in usual, hand valve unlatching with Closed state is respectively as shown in Fig. 2, cutting hand valve 25 has both ends, and first end face is sealing surface, and second end face is T-slot, cutting Hand valve 25 is installed in shell 1, can be slideed along the axis, and the two is slidably matched face using sealing ring realization sealing, cuts off handle 24 are connect by T forming head with the T-slot for cutting off hand valve 25, are had seal receptacle on shell 1 and are matched with cutting 25 first end face of hand valve It closes, realizes sealing, the first end face of cutting handle 24 is operating side, and towards 1 outside of shell, second end face is T forming head, with cutting The second end face of hand valve 25 is flexibly connected, and the two can occur around axial relative rotation, but cannot be occurred axial opposite Second conical seal (contact) face 25a of sliding, cutting hand valve 25 carries out surface carburization processing, for improving surface hardness；Turn clockwise Dynamic cutting handle 24, by the axial movement for being converted into cutting handle 24 and cutting off hand valve 25 of connection screw thread, so that cutting 25 first end face of hand valve is separated with the seal receptacle on the cylinder valve main channel 105 of shell 1, and cylinder valve main channel 105 is opened, and cuts off hand Second conical seal (contact) face 25a of valve 25 is contacted and is compressed, gas outlet 103 and high pressure gas with the first sealing seam allowance 1b on shell 1 100 inside connection of bottle, conversely, rotating counterclockwise the cutting handle 24, cutting 25 first end face of hand valve and 1 cylinder valve master of shell are logical Seal receptacle on road 105 contacts, compresses and realize sealing, and cylinder valve main channel 105 is closed, inside shell cutting and high pressure gas cylinder Connection, can not realize that high pressure gas cylinder 100 be filled and deflated by movement by cylinder valve main channel 105.

There is bleed passage on shell 1, connects higher-pressure region and low-pressure area, be provided with deflation hand valve 2, deflation hand on bleed passage The seal receptacle of handle 22 and adaptation, for installing deflation hand valve 2, deflation hand valve 2 belongs to normally closed type hand valve, and 2 one end of deflation hand valve is Sealing surface, the other end are T-slot, and Open-close sealing pair is formed between the sealing surface and seal receptacle of deflation hand valve 2, manually controllable to put Gas, deflation handle 22 are connect by screw thread with shell 1, and deflation handle 22 is connect by T forming head with the T-slot of deflation hand valve 2, are put Gas hand valve 2 slides along the axis in shell 1, and the rotary motion of deflation handle 22 can be converted into deflation handle 22 and deflation hand valve 2 axial movement, the closing of deflation hand valve 2 and open state are respectively as shown in Fig. 2, the installation situation and cutting of deflation hand valve 2 Hand valve 25 is similar, and deflation handle 22 is connect by screw thread with shell 1, and deflation handle 22 is connect by T forming head with deflation hand valve 2, First conical seal (contact) face 2a carries out surface carburization processing, for improving surface hardness；Under original state, channel 106 and high pressure gas High pressure gas connection, I 106a of first passage are connected to gas outlet 103 and downstream pipe, are put by tightening clockwise in bottle 100 Gas handle 22 makes its first conical seal (contact) face 2a contact and compress with the second sealing seam allowance 1c on shell 1, cuts off channel 106 With first passage 106a, prevent high pressure gas from leaking outside；When needing to open deflation hand valve 2, deflation hand is rotated in the counterclockwise direction Handle 22, and then deflation hand valve 2 is pulled to be axially moveable, so that conical seal (contact) face 2a is sealed seam allowance 1c with second and separates, high pressure gas Downstream pipe is reached by channel 106, I 106a of first passage and gas outlet 103, it can be in the obstructed electricity condition of electromagnet assembly 10 High pressure gas is connected to downstream pipe in lower realization high pressure gas cylinder 100；Preferably, can according to actual needs by deflation handle 22 with The operation element interface of cutting handle 24 is set as different structure, prevents maloperation, improves operational safety.

There is safety relief channel on shell 1, connects higher-pressure region and low-pressure area, safe valve group is set on safety relief channel Part, relief valve assembly include safe valve chest, adjusting plug, porous block, easy frit, sealing ring IV, piston, spring, temperature detector Part, sealing ring I, sealing ring II, sealing ring III, relief valve assembly are an independence, replaceable component, pass through safety valve thereon Screw thread on shell realizes that the installation of engagement thread is fixed with shell 1, and safe valve chest inner end and safety valve inlet channel cooperate And be sealed, safe valve chest inner end is provided with air inlet, and side wall is provided with venthole, gas vent and safety valve exhaust port 107, safety valve inlet channel directly communicates, and piston is installed in safe valve chest, can slide axially, first end face styletable It is sealed with air inlet with the sealing ring that merga pass is adapted to, second end face is contacted with temperature sensing device, in piston and safe valve casing It is provided with spring between body, is pushed piston to safe valve chest outer end by spring clamp force, adjusting plug and porous block, temperature-sensitive Device contacts are connected and fixed by screw thread and safe valve chest, bear initial tension of spring, when piston moves axially, piston First end face is detached from safe valve chest air inlet, and after reaching assigned temperature, relief valve assembly is opened, and high pressure gas cylinder is discharged rapidly High pressure gas in 100, high pressure gas reach safety valve inlet channel by the 6th channel 105g, Five-channel 105f, pass through Sealing ring I and sealing ring II on the inside of relief valve assembly guarantee leakproofness of the high pressure gas in safety valve inlet channel；First Under beginning state, spring is in impaction state, and adjusting plug is connect with safe valve chest using being screwed, and bears the axial pre- of spring Clamp force, temperature sensing device select easy frit, and the main material of easy frit is fusible alloy, according to the difference of assigned temperature, Ke Yixuan The fusible alloy of different components is selected, easy frit is usually softer, and after reaching assigned temperature, temperature sensing device axial dimension can significantly become Small, piston moves axially, and piston first end face is detached from safe valve chest air inlet, acts in order to prevent in initial tension of spring It is lower that severely deformed influence properties of product occur, porous block is provided between easy frit and adjusting plug, porous block usually selects It selects by band there are many metal plate or sintered type metal block of aperture, increases the forced area of easy frit, when cylinder valve temperature reaches finger After determining temperature, easy frit melts immediately, and is discharged from the aperture of porous block, and piston is in initial tension of spring and gas load Collective effect under, be moved to the left, relief valve assembly is opened, and gas passes through safety valve inlet channel, aperture in high pressure gas cylinder 100 Safety valve exhaust port is reached, high pressure gas is discharged rapidly, after relief valve assembly is opened, sealing ring III and sealing ring IV guarantee high pressure Gas will not be leaked from the thread gaps of safe valve chest and adjusting plug.

Although specifically showing and describing the utility model in conjunction with preferred embodiment, those skilled in the art is answered This is understood, in the spirit and scope for not departing from the utility model defined by the appended claims, in form and details On the utility model can be made a variety of changes, be the protection scope of the utility model.

Claims (7)

1. a kind of for eliminating the high pressure cylinder valve of remanent magnetism, which is characterized in that including shell (1), main valve (7), main spring (13) with And the unloading valve being made of off-load component (9) and electromagnet assembly (10), the shell (1) and high pressure gas cylinder (100) screw thread are solid Fixed connection, for controlling the inflation/deflation of high pressure gas cylinder (100), main valve (7) is in the pilot hole (1d) of shell (1) along axial cunning Dynamic, for the built-in layout of electromagnet assembly (10) in shell (1), electromagnet assembly (10) includes coil (10e), block (10g) With guide cylinder (10c), main valve (7) is opened when electromagnet assembly (10) is powered, and gas is by being located at electromagnet assembly (10) center The 6th channel (105g) flow to the gas outlet (103) on shell (1), main spring (13) is installed on off-load component (9) and block Between (10g), main spring (13) generates upward axial force to off-load component (9), and the coil (10e) of energization is to off-load component (9) downward electromagnetic attraction is generated, the axial force of main spring (13) is greater than, driving off-load component (9) moves downward, main valve (7) Off-load component (9) is followed to move downward, off-load component (9) is installed in guide cylinder (10c) and is formed therebetween and is slidably matched, The primary clearance between block (10g) and off-load component (9), the Metal Substrate of off-load component (9) are adjusted by rotary block (10g) Body is magnetic material, is provided on block (10g) and between off-load component (9) lower end and block (10g) for solving electricity The magnetism-isolating loop (14) of remanent magnetism after magnet assemblies (10) power-off, magnetism-isolating loop (14) are non-magnetic material.

2. as described in claim 1 a kind of for eliminating the high pressure cylinder valve of remanent magnetism, which is characterized in that the guide cylinder (10c) It is made of copper alloy, guide cylinder (10c) is thin wall typed structure, and guide cylinder (10c) and block (10g) are connected and fixed and follow gear Block (10g) is rotationally and axially moved.

3. as described in claim 1 a kind of for eliminating the high pressure cylinder valve of remanent magnetism, which is characterized in that the electromagnet assembly (10) it is installed in the electromagnet mounting hole on shell (1), electromagnet assembly (10) further includes end cap (10a), lead-out wire, electromagnetism Iron-clad body (10b), coil rack (10d) and locking nut (10h), end cap (10a) are fixedly installed in electromagnet housing (10b) The second end face of first end face, electromagnet housing (10b) is equipped with internal thread hole and its axis of thread and electromagnet housing (10b) are same Axis, coil (10e) are fixedly installed in the inner cavity electromagnet housing (10b), and block (10g) is located at electromagnet assembly (10) centre bit It sets, block (10g) is threadingly attached on electromagnet housing (10b), and locking nut (10h) is threadedly coupled with block (10g) And electromagnet housing (10b) is compressed, the phase between block (10g) and electromagnet housing (10b) is adjusted by rotary block (10g) To position and then adjust the primary clearance between block (10g) and off-load component (9).

4. as described in claim 1 a kind of for eliminating the high pressure cylinder valve of remanent magnetism, which is characterized in that main valve (7) center It is provided with unloading hole (7c), connection high pressure gas cylinder (100) higher-pressure region and outside low pressure area, unloading hole (7c) is close to off-load component (9) One end be equipped with off-load seam allowance, the off-load seam allowance of the main valve (7) and off-load component (9) form Open-close sealing pair.

5. as claimed in claim 4 a kind of for eliminating the high pressure cylinder valve of remanent magnetism, which is characterized in that the unloading hole (7c) with Off-load seam allowance is in main valve (7) central axis, off-load seam allowance end face and main valve (7) central axis upright, off-load component (9) with Primary clearance between block (10g) is greater than unloading hole (7c) diameter.

6. as described in claim 1 a kind of for eliminating the high pressure cylinder valve of remanent magnetism, which is characterized in that the block (10g) and Off-load component (9) is provided with centre bore, and the lower end surface (9b) of off-load component (9) is contacted with magnetism-isolating loop (14) after energization, realizes master Valve (7) fully opens.

7. as described in claim 1 a kind of for eliminating the high pressure cylinder valve of remanent magnetism, which is characterized in that the main valve (7) with unload It is clearance fit between lotus component (9), axially opposed sliding can occurs, maximum relative displacement amount is greater than main valve (7) center Unloading hole (7c) diameter 1/2, when the off-load component (9) compresses main valve (7), the pin shaft (8) and the main valve (7) contact and interaction force are not generated between pin shaft hole.