CN103047469A - High-temperature solenoid valve and high-temperature thruster using same - Google Patents
High-temperature solenoid valve and high-temperature thruster using same Download PDFInfo
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- CN103047469A CN103047469A CN201210526878XA CN201210526878A CN103047469A CN 103047469 A CN103047469 A CN 103047469A CN 201210526878X A CN201210526878X A CN 201210526878XA CN 201210526878 A CN201210526878 A CN 201210526878A CN 103047469 A CN103047469 A CN 103047469A
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Abstract
The invention discloses a high-temperature solenoid valve and a high-temperature thruster using the same. A thermal insulation pipe is sleeved on the periphery of the part of a valve rod of the high-temperature solenoid valve extending from the lower portion of a solenoid valve casing, during usage, media can diffuse a large amount of heat when passing through inlets and outlets on a valve seat, while heat generated by high-temperature gas needs to be transmitted to an electromagnetism through the thermal insulation pipe and the valve base in a transmission, convection and radiation mode, and the thermal insulation pipe fixed between the electromagnetism and the valve base and the valve rod penetrating through the thermal insulation pipe are made of thermal insulation materials, so that the thermal bridge effect can be achieved, heat exchanging between the valve base and the electromagnetism is reduced, heat diffused to the electromagnetism from the valve base is reduced, temperature of an electromagnetic coil is reduced during usage, the possibility of fusion of an insulation skin of the electromagnetic coil during usage is reduced, and the reliability of the solenoid valve used in the high-temperature environment is improved.
Description
Technical field
The present invention relates to the Solenoid Valve Technology field, relate in particular to a kind of high-temperature solenoid valve, also relate to simultaneously the high temperature thruster that uses this high-temperature solenoid valve.
Background technique
The astrovehicle thruster is as the important component part of astrovehicle operation, and is different according to the fuel of astrovehicle, to the control unit of thruster require different.Solenoid valve at present commonly used is controlled the work of high temperature thruster, thereby reaches the effect of adjusting constantly high temperature thruster thrust size.But because general employing of existing solenoid valve directly is fixed on electromagnet on the valve seat, for example application number is 98217832.8 the disclosed a kind of direct action solenoid valve of Chinese invention patent, offer on the valve seat in such solenoid valve and be communicated with to advance, the throttle orifice of outlet, be provided with flap for the shutoff throttle orifice at throttle orifice, flap is connected on the valve rod of electromagnet, therefore when high temperature media passes through valve seat, the heat that high temperature media distributes can be delivered on the electromagnetic coil by valve rod and the armature of electromagnet, and then so that the temperature of electromagnetic coil constantly raise, until the insulation sheath of electromagnetic coil is melted, the electromagnetic coil short circuit, burn out, thereby so that solenoid valve is scrapped high temperature thruster cisco unity malfunction.
Summary of the invention
The purpose of this invention is to provide the good High-temperature electromagnet of heat radiation between a kind of valve seat and the electromagnet, the high temperature thruster that uses this High-temperature electromagnet also is provided simultaneously, be intended to solve the problem that the electromagnetic coil of electromagnet burns out easily in the prior art.
In order to realize above purpose, the technical solution adopted in the present invention is:
The technological scheme of high-temperature solenoid valve of the present invention is as follows:
A kind of high-temperature solenoid valve, comprise electromagnet fixing on valve seat and the valve seat, be equiped with in the described valve seat be used to control into, the flap of outlet break-make, described electromagnet has the armature that moves up and down for driving flap in valve seat, be fixed on the housing on the valve seat, be fixed with on the described armature with flap is in transmission connection and make valve rod by thermal-protective material, valve rod extends along the vertical direction, stretch out from the below of described housing the lower end of valve rod, and be between electromagnet and the valve seat, be arranged with the heat insulating tube of being made by thermal-protective material on the periphery of extension, the upper end of described heat insulating tube is fixed on the lower position of housing upper armature, and the lower end of heat insulating tube is fixed on the valve seat.
Described housing comprises and is set in the inner housing cylindraceous around the armature and is set in frame on the inner housing periphery, stretch out from the below of frame the lower end of described inner housing, and described heat insulating tube connects on the inwall of inner housing extension by the annular joint coaxial threaded that is convexly equipped with on its upper end periphery.
Described flap be installed in offer on the valve seat in the throttle orifice of the column of upper end open lower end closed, offer outlet at the bottom of the lower stomidium of throttle orifice, offer import on the perisporium, shutoff is exporting, is making when moving and import and export the sealing surface that is communicated with by throttle orifice when falling in order to be used in the lower end surface of flap.
The lower end of described valve rod offers super hemispheric locating slot, the upper end of described flap is stretched in the locating slot, and stretch into part and be provided with at above-below direction and the location bulb that the downside notch edge block of locating slot cooperates, have between the cell wall of described location bulb and locating slot in locating slot, rotating so that the free gap that flap swings in throttle orifice for the location bulb; Be equiped with the setting sleeve that is set in around the flap lower end in the throttle orifice, the lower end outer circumferential face Spielpassung of the internal face of setting sleeve and flap, and offer the opening that is communicated with import at setting sleeve.
The technological scheme of high temperature thruster of the present invention is as follows:
A kind of high temperature thruster, comprise be used to being installed in the thrust chamber, high-temperature solenoid valve with media discharge in the control thrust chamber, described high-temperature solenoid valve comprises electromagnet fixing on valve seat and the valve seat, be equiped with in the described valve seat be used to control into, the flap of outlet break-make, described electromagnet has the armature that moves up and down for driving flap in valve seat, be fixed on the housing on the valve seat, be fixed with on the described armature with flap is in transmission connection and make valve rod by thermal-protective material, valve rod extends along the vertical direction, stretch out from the below of described housing the lower end of valve rod, and be between electromagnet and the valve seat, be arranged with the heat insulating tube of being made by thermal-protective material on the periphery of extension, the upper end of described heat insulating tube is fixed on the lower position of housing upper armature, the lower end of heat insulating tube is fixed on the valve seat, and valve seat is fixedly connected with by heat insulating tube with the housing of electromagnet.
Described housing comprises and is set in the inner housing cylindraceous around the armature and is set in frame on the inner housing periphery, stretch out from the below of frame the lower end of described inner housing, and described heat insulating tube connects on the inwall of inner housing extension by the annular joint coaxial threaded that is convexly equipped with on its upper end periphery.
Described flap be installed in offer on the valve seat in the throttle orifice of the column of upper end open lower end closed, offer outlet at the bottom of the lower stomidium of throttle orifice, offer import on the perisporium, shutoff is exporting, is making when moving and import and export the sealing surface that is communicated with by throttle orifice when falling in order to be used in the lower end surface of flap.
The lower end of described valve rod offers super hemispheric locating slot, the upper end of described flap is stretched in the locating slot, and stretch into part and be provided with at above-below direction and the location bulb that the downside notch edge block of locating slot cooperates, have between the cell wall of described location bulb and locating slot in locating slot, rotating so that the free gap that flap swings in throttle orifice for the location bulb; Be equiped with the setting sleeve that is set in around the flap lower end in the throttle orifice, the lower end outer circumferential face Spielpassung of the internal face of setting sleeve and flap, and offer the opening that is communicated with import at setting sleeve.
Be communicated with inlet connector tube in the import of valve seat, be equiped with the filter core for filter medium impurity in the endoporus of described mouthpiece joint.
The outlet of valve seat is up-small and down-big trumpet-shaped opening.
High-temperature solenoid valve of the present invention is arranged with heat insulating tube in the periphery of the part of stretching out below the solenoid valve housing of valve rod, and the two ends of heat insulating tube are separately fixed on electromagnet and the valve seat, offer on the valve seat into, outlet, in use, medium is in advancing of offering by valve seat, although can distribute a lot of heats during outlet, but since high-temperature gas produce when flowing through valve body need to be via heat insulating tube and valve rod, and by conduction, the mode of convection current and radiation is to the electromagnet transferring heat, and be fixed on the heat insulating tube between electromagnet and the valve seat and the valve rod that is located in the heat insulating tube is made by thermal-protective material, can play heat bridge structure, reduce the exchange heat between valve seat and the electromagnet, thereby reduced from valve seat and be distributed to heat on the electromagnet, reduce the in use temperature of electromagnetic coil, and then reduced the in use possibility of the insulation sheath melting of electromagnetic coil, improved the reliability that solenoid valve uses in hot environment.
Description of drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is the partial enlarged drawing at A place among Fig. 1;
Fig. 3 is the structural representation of filter core among Fig. 1.
Embodiment
The embodiment of antitheft high temperature thruster of the present invention, such as Fig. 1, Fig. 2 and shown in Figure 3, this high temperature thruster comprises the high-temperature solenoid valve that is installed on the thrust chamber air outlet, and this high-temperature solenoid valve is made of electromagnet 1, heat insulating tube 2, flap 3, setting sleeve 24 and valve seat 4.Offer the throttle orifice 4-1 of the column of upper end open lower end closed on the valve seat 4, offer up-small and down-big trumpet-shaped outlet 4-2 at the bottom of the lower stomidium of throttle orifice 4-1, offer import 4-3 on the upper end perisporium of throttle orifice 4-1, be communicated with import 4-3 pipe joint 5 on the import 4-3, be equiped with filter core 6 in the import 4-3 pipe joint 5.Electromagnet 1 comprises the inside and outside housing 7,8 of tubular, frame 8 is set on the periphery of inner housing 7, and between is equiped with electromagnetic coil 9, stretch out from the upper end of inner housing 7 upper end of frame 8, be fixed with the only seat 10 of shutoff on frame 8 upper end open in the endoporus of extension, upper lower end of ending seat 10 is stretched in the frame 8, and shutoff is in the upper end of inner housing 7, upper ending in the seat 10 is equiped with for return spring 12 and the return push rod 13 of pushing tow armature 11 to initial position, and return spring 12 tops are pressed in the top of return push rod 13; Stretch out from the lower end of frame 8 lower end of inner housing 7, coaxial threaded is connected with and seals the lower seat 14 that ends that is fixed on the inner housing 7 in the extension, the 14 lower end shutoff with inner housing 7 of lower only seat, thereby so that on, electromagnet 1 inner chamber that lower only seat 14 and inner housing 7 consist of for armature 11 activities, the lower end of armature 11 offers the tapped hole that extends along the vertical direction, armature 11 is connected with the valve rod 15 that stretches out from lower lower end of ending seat 14 by this tapped hole coaxial threaded, the upper end of valve rod 15 is installed with two and is in armature 11 and the lower locking nut 16 that ends between the seat 14, stretch out from the lower downside that ends seat 14 lower end of valve rod 15, and stretch in the throttle orifice 4-1 opening on the valve seat 4, the part periphery that valve rod 15 stretches out from the lower downside that ends seat 14 is arranged with and is in electromagnet 1 and ends the heat insulating tube 2 of being made by thermal-protective material between the seat, the upper end of heat insulating tube 2 convexes with lower ends the seat 14 annular joints that are wholely set, and is connected on the inner housing 7 by this annular joint coaxial threaded; The lower end of heat insulating tube 2 is fixed on the hole of throttle orifice 4-1 on the valve seat 4 along the position.
There is the gap that is communicated with the inner chamber of electromagnet 1 between the internal face of the outer circumferential face of valve rod 15 and heat insulating tube 2, and offer the passage of downward-extension in a side of armature 11, offer in the bottom of return push rod 13 opening towards, and the blind hole that is communicated with the inner chamber of electromagnet 1, the outer circumferential face of the upper end of return push rod 13 cooperates with the upper inner wall sealing that ends seat, in use, pressurized gas can pass through heat insulating tube, the blind hole that the inner chamber of electromagnet and the passage on the armature enter the bottom of return push rod, with return push rod 13 jack-up upwards, so that return push rod 13 and return spring 12 cooperate the effect of playing pilot valve.
Flap 3 comprises the location bulb 3-2 of columnar body 3-1, columnar body 3-1 upper end setting and the seal plug 3-3 that columnar body 3-1 lower end arranges.Location bulb 3-2 is installed in the super hemispheric locating slot 15-1 that offers valve rod 15 lower ends, and cooperate at the above-below direction block with the notch edge of locating slot 15-1, between the outer circumferential face of the trough wall surface of locating slot 15-1 and location bulb 3-2, have for rotating so that the free gap that flap 3 swings in throttle orifice 4-1 in locating slot 15-1 for location bulb 3-2.The lower end surface shutoff of seal plug 3-3 is exporting on the 4-2, and secondary with bottom surface, the hole formation plane sealing of throttle orifice 4-1.
Setting sleeve 24 is installed in the throttle orifice 4-1, and is set on the periphery of columnar body 3-1 of valve rod 15.The outer circumferential face Spielpassung of the internal face of setting sleeve 24 and seal plug 3-3.
Described filter core 6 is wrapped in the cubic hollow casing 26, the filter opening that is communicated with its inner chamber on the side, relative both sides of housing 26.
High-order solenoid valve is the direct-acting type normal-closed electromagnetic valve among the present invention, in cold situation, the plane sealing secondary position of high-temperature fuel gas between at the bottom of pipe joint 5 middle filtrators reach the throttle orifice 4-1 hole of the seal plug 3-3 of flap 3 in the valve seat 4 and valve seat 4, arrive through the space between valve rod 15 and the heat insulating tube 2 in the valve pocket of electromagnet 1, the passage of the perforation upper and lower end of offering on armature 11 again arrives upper ending in the seat 10, but because heat insulating tube 2 is fixed between electromagnet 1 and the valve seat 4, consist of heat bridge structure, thereby so that can cutting off the heat that high-temperature fuel gas distributes, heat insulating tube 2 and valve rod 15 be transferred on the electromagnet, thereby the heat that has stoped high-temperature fuel gas to distribute transmits to electromagnet 1, so that the temperature of electromagnet 1 is lower than the serviceability temperature of nonmetallic material, guaranteed that upper ending in seat 10 endoporus can work with the lower O RunddichtringO 17 of installing on seat 14 peripheries that ends, the insulation sheath of electromagnetic coil 9 can melting, and then has guaranteed the reliability that electromagnet 1 is worked under hot environment;
When energising, armature 11 moves up under electromagnetic coil 9 effects, thereby making armature 11 drive flap 3 by valve rod 15 moves up, plane sealing pair between making at the bottom of the throttle orifice 4-1 hole of the seal plug 3-3 of flap 3 and valve seat 4 is destroyed, accumulate in high-temperature fuel gas among the throttle orifice 4-1 of valve seat 4 by flap 3 seal plug 3-3 and the throttle orifice 4-1 hole of valve seat 4 at the bottom of between the space flow into outlet 4-2, outlet 4-2 on valve seat 4 reaches the outlet 4-2 of thrust chamber again, so that high-temperature fuel gas reaches outside open space, and under the expansion of high-temperature fuel gas, produce predetermined thrust.
The present invention makes medium in advancing of offering by valve seat, although can distribute a lot of heats during outlet, but since high-temperature gas produce when flowing through valve body need to be via heat insulating tube and valve rod, and by conduction, the mode of convection current and radiation is to the electromagnet transferring heat, and be fixed on the heat insulating tube between electromagnet and the valve seat and the valve rod that is located in the heat insulating tube is made by thermal-protective material, gap between the outer circumferential face of valve rod and the outer circumferential face of heat insulating tube is less, can play heat bridge structure, reduce the exchange heat between valve seat and the electromagnet, thereby reduced from valve seat and be distributed to heat on the electromagnet, reduce the in use temperature of electromagnetic coil, and then reduced the in use possibility of the insulation sheath melting of electromagnetic coil, improved the reliability that solenoid valve uses in hot environment.The location bulb 3-2 of flap 3 cooperates by the block between the notch edge of location bulb 3-2 and locating slot 15-1 in the locating slot 15-1 of valve rod 15 bottoms, guarantees that flap 3 can move up and down with valve rod 15; Free gap between the outer circumferential face of location bulb 3-2 and the trough wall surface of locating slot 15-1, guaranteed when flap 3 moves down, can be by cooperating between location bulb 3-2 and the place kick, the lower end surface of assurance seal plug just in time shutoff is exporting on the 4-2, such as when deflection occurs in seal plug 3-3, parallelism between the lower end surface of Spielpassung assurance seal plug 3-3 between setting sleeve 24 and the seal plug 3-3 and the bottom surface of throttle orifice 4-1 is so that seal plug 3-3 is exporting on the 4-2 in the accurately shutoff of its lower end surface of lower backwardness; Location bulb 3-2 cooperates with sphere between the locating slot 15-1 can play above-below direction to heart effect, guarantee between at the bottom of the hole of the lower end surface of seal plug 3-3 and throttle orifice 4-1 the secondary reliability that seals of plane sealing and seal leakproofness.
In the above-described embodiments, the internal face Spielpassung of the setting sleeve of installing in the seal plug of flap and the throttle orifice, can be sealed in the outlet with the lower end surface that guarantees seal plug, its principle is, guarantee the reliability of capping by the radial play of restriction seal plug, so in other embodiments, also can remove this setting sleeve, and the aperture of throttle orifice is reduced, so that the hole wall Spielpassung of the outer circumferential face of seal plug and throttle orifice.
In the above-described embodiments, convex with on the upper end periphery of heat insulating tube and a lower annular joint that is wholely set that ends, and be connected in the inner housing by the lower seat coaxial threaded of ending, in other embodiments, the upper end of heat insulating tube also can be fixed on down the downside that ends seat, means of fixation for be threaded, the modes that are fixedly connected with commonly used such as bolt connection, welding.
In the above-described embodiments, flap and flap are connected with the locating slot spherical floating by the location bulb, and in other embodiments, flap such as also can be threaded connection, welds or be wholely set at the lower end that common mode is arranged on valve rod.
In the above-described embodiments, the sealing pair between at the bottom of the throttle orifice hole of the seal plug of flap and valve seat is that plane sealing is secondary, and in other embodiments, this plane sealing pair also can with the ball face sealing pair or conical surface seal is secondary be replaced.
In the above-described embodiments, cooperate the effect of playing pilot valve by return spring and return push rod, the height that upwards rises to control armature, in other embodiments, also can be by ending the pilot valve (electromagnetism push rod, cylinder or oil hydraulic cylinder etc.) of installing between seat and the armature, to apply downward active force to armature, the aperture that control armature upwards rises, reducing the mistakes tolerance in the valve seat, the temperature that reduction the present invention then is sorry and bears on the high temperature thrust valve.
The embodiment of high-temperature solenoid valve of the present invention: as shown in Figure 1 to Figure 3, therefore the in the above-described embodiments explanation of concrete structure about high-temperature solenoid valve repeats no more in the present embodiment.
Claims (10)
1. high-temperature solenoid valve, comprise electromagnet fixing on valve seat and the valve seat, be equiped with in the described valve seat be used to control into, the flap of outlet break-make, described electromagnet has the armature that moves up and down for driving flap in valve seat, be fixed on the housing on the valve seat, it is characterized in that, be fixed with the valve rod of being made by thermal-protective material that is in transmission connection with flap on the described armature, valve rod extends along the vertical direction, stretch out from the below of described housing the lower end of valve rod, and be between electromagnet and the valve seat, be arranged with the heat insulating tube of being made by thermal-protective material on the periphery of extension, the upper end of described heat insulating tube is fixed on the lower position of housing upper armature, and the lower end of heat insulating tube is fixed on the valve seat.
2. High-temperature electromagnet according to claim 1, it is characterized in that, described housing comprises and is set in the inner housing cylindraceous around the armature and is set in frame on the inner housing periphery, stretch out from the below of frame the lower end of described inner housing, and described heat insulating tube connects on the inwall of inner housing extension by the annular joint coaxial threaded that is convexly equipped with on its upper end periphery.
3. High-temperature electromagnet according to claim 1 and 2, it is characterized in that, described flap be installed in offer on the valve seat in the throttle orifice of the column of upper end open lower end closed, offer outlet at the bottom of the lower stomidium of throttle orifice, offer import on the perisporium, shutoff is exporting, is making when moving and import and export the sealing surface that is communicated with by throttle orifice when falling in order to be used in the lower end surface of flap.
4. High-temperature electromagnet according to claim 3, it is characterized in that, the lower end of described valve rod offers super hemispheric locating slot, the upper end of described flap is stretched in the locating slot, and stretch into part and be provided with at above-below direction and the location bulb that the downside notch edge block of locating slot cooperates, have between the cell wall of described location bulb and locating slot in locating slot, rotating so that the free gap that flap swings in throttle orifice for the location bulb; Be equiped with the setting sleeve that is set in around the flap lower end in the throttle orifice, the lower end outer circumferential face Spielpassung of the internal face of setting sleeve and flap, and offer the opening that is communicated with import at setting sleeve.
5. high temperature thruster, comprise be used to being installed in the thrust chamber, high-temperature solenoid valve with media discharge in the control thrust chamber, described high-temperature solenoid valve comprises electromagnet fixing on valve seat and the valve seat, be equiped with in the described valve seat be used to control into, the flap of outlet break-make, described electromagnet has the armature that moves up and down for driving flap in valve seat, be fixed on the housing on the valve seat, it is characterized in that, be fixed with on the described armature with flap is in transmission connection and make valve rod by thermal-protective material, valve rod extends along the vertical direction, stretch out from the below of described housing the lower end of valve rod, and be between electromagnet and the valve seat, be arranged with the heat insulating tube of being made by thermal-protective material on the periphery of extension, the upper end of described heat insulating tube is fixed on the lower position of housing upper armature, the lower end of heat insulating tube is fixed on the valve seat, and valve seat is fixedly connected with by heat insulating tube with the housing of electromagnet.
6. high temperature thruster according to claim 5, it is characterized in that, described housing comprises and is set in the inner housing cylindraceous around the armature and is set in frame on the inner housing periphery, stretch out from the below of frame the lower end of described inner housing, and described heat insulating tube connects on the inwall of inner housing extension by the annular joint coaxial threaded that is convexly equipped with on its upper end periphery.
7. according to claim 5 or 6 described high temperature thrusters, it is characterized in that, described flap be installed in offer on the valve seat in the throttle orifice of the column of upper end open lower end closed, offer outlet at the bottom of the lower stomidium of throttle orifice, offer import on the perisporium, shutoff is exporting, is making when moving and import and export the sealing surface that is communicated with by throttle orifice when falling in order to be used in the lower end surface of flap.
8. high temperature thruster according to claim 7, it is characterized in that, the lower end of described valve rod offers super hemispheric locating slot, the upper end of described flap is stretched in the locating slot, and stretch into part and be provided with at above-below direction and the location bulb that the downside notch edge block of locating slot cooperates, have between the cell wall of described location bulb and locating slot in locating slot, rotating so that the free gap that flap swings in throttle orifice for the location bulb; Be equiped with the setting sleeve that is set in around the flap lower end in the throttle orifice, the lower end outer circumferential face Spielpassung of the internal face of setting sleeve and flap, and offer the opening that is communicated with import at setting sleeve.
9. according to claim 5 or 6 described high temperature thrusters, it is characterized in that, be communicated with inlet connector tube in the import of valve seat, be equiped with the filter core for filter medium impurity in the endoporus of described mouthpiece joint.
10. according to claim 5 or 6 described high temperature thrusters, it is characterized in that the outlet of valve seat is up-small and down-big trumpet-shaped opening.
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| CN201210526878.XA CN103047469B (en) | 2012-12-10 | 2012-12-10 | High-temperature solenoid valve and high-temperature thruster using same |
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| CN103395368A (en) * | 2013-08-05 | 2013-11-20 | 上海蓝恩控制系统有限公司 | Guide tube connecting mechanism |
| CN104405533A (en) * | 2014-10-28 | 2015-03-11 | 上海空间推进研究所 | Sealing structure of small light type liquid rocket attitude control engine |
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| CN110671535A (en) * | 2019-10-18 | 2020-01-10 | 深圳市魔方卫星科技有限公司 | High-temperature-resistant electromagnetic valve |
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| CN104405533A (en) * | 2014-10-28 | 2015-03-11 | 上海空间推进研究所 | Sealing structure of small light type liquid rocket attitude control engine |
| CN104405533B (en) * | 2014-10-28 | 2016-03-23 | 上海空间推进研究所 | A kind of sealing configuration of small-sized liquid rocket attitude control engine |
| CN104807516A (en) * | 2015-03-03 | 2015-07-29 | 中国寰球工程公司 | Restriction orifice crossover flange for measuring low-temperature medium process parameters |
| CN104807516B (en) * | 2015-03-03 | 2018-09-28 | 中国寰球工程公司 | A kind of restriction orifice crossover flange measured for cryogenic media procedure parameter |
| CN110671535A (en) * | 2019-10-18 | 2020-01-10 | 深圳市魔方卫星科技有限公司 | High-temperature-resistant electromagnetic valve |
| CN110671535B (en) * | 2019-10-18 | 2021-02-05 | 重庆开拓卫星科技有限公司 | High-temperature-resistant electromagnetic valve |
Also Published As
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|---|---|
| CN103047469B (en) | 2014-12-03 |
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