CN202215826U - Pilot-operated type, large-flow and low-power dedicated electromagnetic valve for high pressure gases - Google Patents

Pilot-operated type, large-flow and low-power dedicated electromagnetic valve for high pressure gases Download PDF

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Publication number
CN202215826U
CN202215826U CN201120340952XU CN201120340952U CN202215826U CN 202215826 U CN202215826 U CN 202215826U CN 201120340952X U CN201120340952X U CN 201120340952XU CN 201120340952 U CN201120340952 U CN 201120340952U CN 202215826 U CN202215826 U CN 202215826U
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CN
China
Prior art keywords
spool
solenoid valve
iron
compression
spring
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
CN201120340952XU
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Chinese (zh)
Inventor
曹广滨
沈景
徐红林
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ROTAREX VALVE (SHANGHAI) CO Ltd
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ROTAREX VALVE (SHANGHAI) CO Ltd
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Priority to CN201120340952XU priority Critical patent/CN202215826U/en
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Publication of CN202215826U publication Critical patent/CN202215826U/en
Anticipated expiration legal-status Critical
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Abstract

The utility model provides a pilot-operated type, large-flow and low-power dedicated electromagnetic valve for high pressure gases, which comprises a valve core housing, a heel piece, driving iron, a valve core and a spring shaft, and further comprises a secondary valve core, driven iron and a compression body, wherein the spring shaft is arranged in the driving iron; a spring is sleeved on the spring shaft; the secondary valve core can move axially; the moving end of the secondary valve core is arranged in the driving iron; the sealing end of the secondary valve core is near to an air outlet and is used for sealing the electromagnetic valve; the driven iron is arranged between the moving end and the sealing end of the secondary valve core; the compression body is arranged outside the driving iron in a position near the air outlet; a secondary spring is sleeved on the compression body; one end of the secondary spring is propped against the valve core; and the other end of the secondary spring is propped against the compression body. As a high-pressure pilot-operated structure is adopted, on the condition that a low-power electromagnetic coil is adopted, the electromagnetic valve has a large valve core stroke and a higher rated flow; and due to the adoption of the two compression springs, the stability and the impact resistance of the electromagnetic valve are improved.

Description

Leading type, big flow, low-power pressurized gas special electromagnetic valve
Technical field
The utility model relates to the solenoid valve field, particularly a kind of leading type, big flow, lower powered pressurized gas special electromagnetic valve.
Background technique
Solenoid valve extensive use in supply, transmission, control and the power system of fluids such as liquid, gas; Solenoid valve relies on electromagnetic attraction, gas pressure and spring force to come self-locking at Chang Kai and normally closed static working state; Reaching to the valve conducting with by the purpose of controlling, is the key components and parts of whole system.
Rated flow and power loss are to weigh the important indicator of solenoid valve.The solenoid valve rated flow depends primarily on the mechanical structure of solenoid valve, increases the volume of valve body inner fluid circulation, the moving displacement of increase spool, the circulation coefficient of raising valve body etc. and can increase rated flow.The solenoid valve power loss is mainly relied on the improvement of electromagnetic coil, comprises the permeability etc. of driving voltage, electric current, coil turn, coil inductance, resistance, magnetic resistance and the soft magnetic material of coil; Also depend on the size of the opening force of solenoid valve valve simultaneously, opening force is more little, and then the power requirements of solenoid valve is more little.
The application higher to pressure, that flow is bigger then requires the unlatching magnetic force of solenoid valve very high, and to the coefficient of stiffiness of Packing spring, the sealing of sealed valve body all has high requirements, and occurs following problem easily:
At first; The solenoid valve of pressurized gas control system is after gas gets into from inlet, and gas will produce pressure to spool, and force value is relevant with the spool area with gas pressure intensity; For example: the gas of 20Mpa; The 5mm of valve core diameter, pressurized gas reach 392.5N to the pressure of spool, and this electromagnetic force to coil requires very high.The most critical factor that influences the solenoid valve rated flow is the inlet/outlet circulation area of fluid and the stroke of spool, and the area of the bigger then spool of circulation area is big more, and seal ring thickness or line footpath are then big more, and this requires the stroke of spool big more.The magnetic field that coil produces is that continuous distributed in the certain space zone passive has the vector field of revolving; The magnetic line of force is closed curve; Magnetic induction intensity is meant the magnetic line of force number that is passed through on the unit area vertical with magnetic line of force direction; Far away more with the distance in magnetic field, then magnetic induction intensity more a little less than, magnetic force more a little less than.Thereby spool stroke is big more, and the working clearance of magnet is big more, then high more to the requirement of coil generation magnetic induction intensity when then cutting off the power supply.
Secondly, under the particular job condition, the job insecurity phenomenon can appear in solenoid valve, and frequent unlatching of spool knocked valve seat, and spool causes the pipeline fluid pressure fluctuation of valve front and back because of vibration; When throttle down, spool is to the serious impact of valve seat, with the working life of reducing solenoid valve.
Summary of the invention
The purpose of the utility model is to provide a kind of leading type, big flow, lower powered pressurized gas special electromagnetic valve.Through valve inner spool and spring etc. have been done new design, make solenoid valve satisfy the pressurized gas usage requirement below the 30Mpa, also improved rated flow simultaneously, strengthened the stability of spool.
The solenoid valve that the utility model provides comprises: spool housing, yoke, initiatively iron, spool and place the initiatively inner spring shaft that is with spring of iron wherein, also comprise:
Axially displaceable spool, the mobile terminal of inferior spool place initiatively iron inside, and sealed end is used for the sealed electrical magnet valve near the air outlet;
Place the mobile terminal of time spool and the driven iron between the sealed end;
Place the compression body of active iron near the air outlet, compression body is with spring one time, and inferior spring one end withstands spool and the other end withstands compression body.
In another preference, spool is provided with first gas port.
In another preference, the diameter of the near-end of inferior spool is less than the diameter of far-end.
In another preference, the far-end of driven very tight subsides time spool.
In another preference, spool is provided with the primary seal circle near the air outlet end.
In another preference, inferior spool is provided with time seal ring near the air outlet end.
In another preference, initiatively iron adopts with compression body and is threaded.
In another preference, driven iron adopts the mode of interference fit to fix with time spool.
In another preference, solenoid valve also is provided with nut and O RunddichtringO in the valve core shell axon to far-end.
In another preference, arbitrary or a plurality of condition below solenoid valve satisfies:
A. the ultimate range between yoke and the active iron is 5mm;
B. the ultimate range between compression body and time spool is 4.5mm;
C. the displacement maximum value of spool is 4.6mm.
The solenoid valve of the utility model adopts first guide structure, driving and driven iron stepping action, and main, inferior spring moves step by step, and main, inferior spool substep switch has been processed leading type, big flow, substep unlatching, strong stability pressurized gas solenoid valve.Solenoid valve has bigger spool stroke under the state that adopts the low-power electromagnetic coil, higher solenoid valve rated flow, the stability and the impact resistance of dual spring design also raising solenoid valve.
In should be understood that in the utility model scope, above-mentioned each technical characteristics of the utility model and hereinafter can mutual combination between specifically described each technical characteristics in (like embodiment), thus constitute new or optimized technical scheme.As space is limited, this tired no longer one by one stating.
Description of drawings
Fig. 1 is the structural representation of a kind of solenoid valve in the utility model first mode of execution;
Fig. 2 is the closed condition schematic representation of a kind of solenoid valve in the utility model first mode of execution;
Fig. 3 is the preliminary opening state schematic representation of a kind of solenoid valve in the utility model first mode of execution;
Fig. 4 is the complete opening view of a kind of solenoid valve in the utility model first mode of execution.
Embodiment
Below will combine accompanying drawing that the preferred embodiments of the utility model is elaborated, so that clearer purpose, characteristics and the advantage of understanding the utility model.
The utility model first mode of execution relates to a kind of leading type, big flow, low-power pressurized gas special electromagnetic valve.Fig. 1 is the structural representation of this solenoid valve.
This solenoid valve comprises: spool housing 1, yoke 2, initiatively iron 3, spool 4 and place the inner spring shaft that is with spring 56 of iron initiatively 3.Also comprise: axially displaceable spool 7, the mobile terminal 71 of inferior spool 7 place initiatively iron 3 inside; Sealed end 72 is used for the sealed electrical magnet valve near air outlet 22; Place the mobile terminal 71 of time spool 7 and the driven iron 8 between the sealed end 72; Place the compression body 9 of active iron 3 near air outlet 22, compression body 9 is with spring 10 one time, and inferior spring 10 1 ends withstand spool 4 and the other end withstands compression body 9.
Thereby inferior spool 7 is less with the less pressure that receives of area of contact of pressurized gas, and time spool 7 is opened in advance in the opening process of solenoid valve, makes pressurized gas in air intake 21 and air outlet 22 circulations, at this moment, and the pressure balance that spool 4 receives.Driven iron 8 adsorbs with active iron 3 each other, and making time spool 7 and the clearance distance of active iron 3 is zero.Thereby inferior spring 10 is compressed body 9 compressions and produces elastic force promotion spool 4 in whole process, make the solenoid valve complete opening.This structure master, inferior spool substep switch, driving and driven iron stepping action, main, inferior spring moves step by step; Realized pressurized gas guide function; Under the situation of using the low-power electromagnetic coil, also can satisfy the requirement in high pressure, the big flow gas control system, increased the stroke of spool; Improve the circulation coefficient of valve body, increased the flow of solenoid valve.Simultaneously, adopted master, inferior spring, increased pressure, improved the sealability of valve spool 4; When two springs are closed rapidly at valve, reduced the impact of 4 pairs of valve seats of spool; After having reduced the frequent unlatching of valve, whole system produces the defective mode of pressure surge, the stability and the working life of having improved system.
Spool is provided with first gas port 23.Elder generation's gas port 23 is used for the pressurized gas of suction port 21 are imported to spool housing 1 inside, has accelerated the boot speed of pressurized gas.In addition, be appreciated that in some other mode of execution of the utility model also can not have this elder generation's gas port 23, because of the component in the spool housing 1 are structure slidably, have the slit, pressurized gas also can be via this slit entering spool housing 1.
The diameter of the mobile terminal 71 of inferior spool 7 is less than the diameter of sealed end 72.Sealed end 71 diameters are bigger, can reach better sealing effect, and mobile terminal 71 diameters are less then to receive littler high-pressure gas pressure, is easier to open time spool 7.In addition, be appreciated that the diameter of mobile terminal 71 also can be equal to or less than the diameter of sealed end.
Driven iron 8 is close to the sealed end 72 of time spool 7.In addition, be appreciated that driven iron 8 also can not possess this characteristic in some other mode of execution of the utility model.
Spool 4 is provided with primary seal circle 41 near air outlet 22.Primary seal circle 41 mainly plays better seal action, in addition, also can reach same sealing effect through the structure that changes spool 4.
Inferior spool 7 is provided with time seal ring 73 near air outlet 22.Inferior seal ring 73 mainly plays seal action, in addition, also can reach same sealing effect through structure or the material that changes spool 4.
Initiatively iron 3 adopts with compression body 9 and is threaded.Initiatively iron 3 also can adopt key or other modes to fix with compression body 9, is not limited to adopt be threaded.
Driven iron 8 adopts the mode of interference fit to fix with time spool 7.Driven iron 8 can adopt the mode of screw thread or key to fix with time spool 7.
Solenoid valve axially also is provided with nut 24 and O RunddichtringO 25 away from air outlet 22 at spool housing 1.Nut 24 mainly is placed on outside the spool housing 1, protection spool housing, and can play effect attractive in appearance.O RunddichtringO 25 mainly plays seal action.In addition, be appreciated that in some other mode of execution of the utility model also not possess nut 24 and O RunddichtringO 25.
Arbitrary or a plurality of condition below solenoid valve satisfies: the ultimate range between a. yoke 2 and the active iron 3 is 5mm; B. the ultimate range between compression body 9 and time spool 7 is 4.5mm; C. the displacement maximum value of spool 4 is 4.6mm.In addition, be appreciated that the yoke 2 and initiatively ultimate range between the ultimate range between the iron 3, compression body 9 and the inferior spool 7, the displacement maximum value of spool 4 can have different numerical in some other mode of execution.
The working principle of this solenoid valve is following, and Fig. 2 is the schematic representation of this closed electromagnetic valve state.When being in off-position, closed electromagnetic valve, gas get into spool housings 1 through first gas port 23 then by suction port 21 entering, and at this moment, the pressure of suction port 21 is greater than the pressure of air outlet 22, and spool 4 is compressed by spool housing 1 interior pressurized gas with time spool 7.
Fig. 3 is the schematic representation of the preliminary opening state of this solenoid valve.After the energising, yoke 2 and initiatively produce electromagnetic force and absorption each other between the iron 3, overcome the less pressure of time spring 10 after, initiatively iron 3 drives compression body 9 and produces displacements; Behind the displacement certain distance, compression body 9 contacts with the inferior seal ring 73 of the sealed end 72 of time spool 7.At this moment, initiatively between iron 3 and the yoke 2 electromagnetic force since distance reduce increase at double, overcome the pressure of pressurized gas to inferior spool 7, time spool 7 and spool were opened in 4 minutes.This moment, pressurized gas can be in suction port 21, air outlet 22,23 circulations of first gas port, and the high-pressure gas pressure that spool 4 receives is in state of equilibrium, and solenoid valve is tentatively opened completion.
Fig. 4 is the schematic representation of this solenoid valve complete opening state.When preliminary opening state finishes, adsorb fully because of receiving electromagnetic force between driven iron 8 and the active iron 3, inferior seal ring 73 becomes big, gas conducting smoothness with the distance of spool 4.Initiatively the distance between iron 3 and the yoke 2 is reduced to zero, and inferior spring 10 is compressed, and the inferior spring 10 after the compression produces thrust and promotes spool 4, and spool 4 and air outlet 22 are separated fully, and the solenoid valve complete opening is accomplished.
All documents in that the utility model is mentioned are all quoted as a reference in this application, are just quoted such as a reference separately as each piece document.Should be understood that in addition after having read the above-mentioned teachings of the utility model, those skilled in the art can do various changes or modification to the utility model, these equivalent form of values fall within the application's appended claims institute restricted portion equally.

Claims (10)

1. a solenoid valve comprises spool housing (1), yoke (2), active iron (3), spool (4) and places the initiatively inner spring shaft that is with spring (5) (6) of iron (3), it is characterized in that, also comprises:
Axially displaceable spool (7), the mobile terminal (71) of said spool (7) places said active iron (3) inside, and sealed end (72) is used for the sealed electrical magnet valve near air outlet (22);
Place the mobile terminal (71) of time spool (7) and the driven iron (8) between the sealed end (72);
Place the compression body (9) of said active iron (3) near air outlet (22), said compression body (9) is with a time spring (10), and said spring (10) one end withstand said spool (4) and the other end withstands said compression body (9).
2. solenoid valve according to claim 1 is characterized in that, said spool is provided with first gas port (23).
3. solenoid valve according to claim 1 and 2 is characterized in that, the diameter of the mobile terminal (71) of said spool (7) is less than the diameter of sealed end (72).
4. solenoid valve according to claim 1 and 2 is characterized in that, said driven iron (8) is close to the sealed end (72) of said spool (7).
5. solenoid valve according to claim 1 and 2 is characterized in that, said spool (4) is provided with primary seal circle (41) near air outlet (22).
6. solenoid valve according to claim 1 and 2 is characterized in that, said spool (7) is provided with time seal ring (73) near air outlet (22).
7. solenoid valve according to claim 1 and 2 is characterized in that, said active iron (3) adopts with compression body (9) and is threaded.
8. solenoid valve according to claim 1 and 2 is characterized in that, said driven iron (8) adopts the mode of interference fit to fix with time spool (7).
9. solenoid valve according to claim 1 and 2 is characterized in that, said solenoid valve axially also is provided with nut (24) and O RunddichtringO (25) away from air outlet (22) at said spool housing (1).
10. solenoid valve according to claim 1 and 2 is characterized in that, arbitrary or a plurality of condition below said solenoid valve satisfies:
A. the ultimate range between said yoke (2) and the active iron (3) is 5mm;
B. the ultimate range between said compression body (9) and time spool (7) is 4.5mm;
The displacement maximum value of c. said spool (4) is 4.6mm.
CN201120340952XU 2011-09-13 2011-09-13 Pilot-operated type, large-flow and low-power dedicated electromagnetic valve for high pressure gases Expired - Lifetime CN202215826U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201120340952XU CN202215826U (en) 2011-09-13 2011-09-13 Pilot-operated type, large-flow and low-power dedicated electromagnetic valve for high pressure gases

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201120340952XU CN202215826U (en) 2011-09-13 2011-09-13 Pilot-operated type, large-flow and low-power dedicated electromagnetic valve for high pressure gases

Publications (1)

Publication Number Publication Date
CN202215826U true CN202215826U (en) 2012-05-09

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102943902A (en) * 2012-12-06 2013-02-27 重庆华渝电气仪表总厂 Air pressure anti-lock braking system (ABS) regulating valve
CN103423491A (en) * 2012-05-16 2013-12-04 罗达莱克斯阀门(上海)有限公司 Cylinder valve and motor vehicle with same
CN105333205A (en) * 2015-11-23 2016-02-17 浙江理工大学 High-pressure pilot-operated solenoid valve for compressed natural gas automobile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103423491A (en) * 2012-05-16 2013-12-04 罗达莱克斯阀门(上海)有限公司 Cylinder valve and motor vehicle with same
CN102943902A (en) * 2012-12-06 2013-02-27 重庆华渝电气仪表总厂 Air pressure anti-lock braking system (ABS) regulating valve
CN102943902B (en) * 2012-12-06 2014-04-09 重庆华渝电气仪表总厂 Air pressure anti-lock braking system (ABS) regulating valve
CN105333205A (en) * 2015-11-23 2016-02-17 浙江理工大学 High-pressure pilot-operated solenoid valve for compressed natural gas automobile

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Granted publication date: 20120509