CN103671980A - Valve rod upward quick-acting mechanism of valve - Google Patents
Valve rod upward quick-acting mechanism of valve Download PDFInfo
- Publication number
- CN103671980A CN103671980A CN201310747653.1A CN201310747653A CN103671980A CN 103671980 A CN103671980 A CN 103671980A CN 201310747653 A CN201310747653 A CN 201310747653A CN 103671980 A CN103671980 A CN 103671980A
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- Prior art keywords
- valve rod
- spring
- valve
- quick
- sliding nut
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/02—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces with screw-spindle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/48—Attaching valve members to screw-spindles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/50—Mechanical actuating means with screw-spindle or internally threaded actuating means
- F16K31/508—Mechanical actuating means with screw-spindle or internally threaded actuating means the actuating element being rotatable, non-rising, and driving a non-rotatable axially-sliding element
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/44—Mechanical actuating means
- F16K31/60—Handles
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanically-Actuated Valves (AREA)
- Preventing Unauthorised Actuation Of Valves (AREA)
Abstract
A valve rod upward quick-acting mechanism of a valve is characterized in that a valve clack is arranged at the lower end of a valve rod, the valve rod provided with the valve clack penetrates into a spring box through the lower portion of the spring box, the bottom of the spring box is provided with an annular groove used for fixing a spring, and the valve rod is sleeved with the spring which is arranged in the annular groove in the bottom in the spring box; a sliding nut is screwed in the valve rod and presses the spring, a sliding key board penetrates through a rectangular hole in the side face of the spring box and is inserted into a longitudinal groove in one side of the nut so that the sliding nut can move rather than rotate, and the sliding key board is fixed on the side wall of the spring box through a bolt. The valve rod upward quick-acting mechanism has the advantages that the valve rod can rapidly and automatically move upwards through the mechanism, and can rapidly move upwards by being operated by a mechanical arm; the valve rod upward quick-acting mechanism is large in bearing force and reliable in action; the valve rod upward quick-acting mechanism is suitable for the quick-acting protection valve needing automatic control and a mechanical arm operating mechanism, and suitable for application places having high safety requirements for the valve for middle-pressure and high-pressure protection; a corresponding quick-closing valve and a quick-opening valve can be designed by means of the valve rod upward quick-acting mechanism.
Description
technical field:
The present invention relates to mechanical equipment technical field, refer in particular to a kind of valve rod quick-acting mechanism that makes progress.
background technique:
At present, for known fast valve, quick-acting valve, be generally to utilize the pneumatic servo cylinder of single effect to directly act on the fast opening and closing that valve rod is realized valve, or utilize beidirectional pneumatic servo cylinder indirectly-acting in valve rod, valve to be opened and closed rapidly.At present, the valve of Yong Zhelei stem movement mechanism formation, all can realize automatic speed pass or automatic speed is opened function, but does not have mechanism hand behaviour function; Once robot control system(RCS) lost efficacy, valve quick-acting function cannot be realized, and the Security of application system cannot be guaranteed; Therefore, the valve that Yong Zhelei stem movement mechanism forms, not very good for the place that security requirement is high; Because the mechanical structure of Zhe Lei stem movement mechanism is limit, want by its structure is carried out to transformation way again, very difficult realization can have automatic quick-action and mechanism hand behaviour quick-acting function simultaneously.
summary of the invention:
The object of this invention is to provide a kind of valve rod quick-acting mechanism that makes progress, overcome existing fast valve, quick-acting valve, cannot realize the deficiency that possesses robotic manipulation quick-acting function when possessing automatic quick-acting function.
The object of the invention is to realize as follows: a kind of valve rod quick-acting mechanism that makes progress, mainly comprise handwheel, valve rod, sliding nut, axis, handle, feather key plate, spring, spring case lid, spring casing, flap, bearing, end cap, it is characterized in that: flap is positioned on the lower end of valve rod, the valve rod that flap is housed penetrates arrival spring box body from the bottom of spring casing; Bottom in spring casing has circular groove, and for fixing spring use, spring is inserted in the circular groove that valve rod is positioned in spring casing bottom; Sliding nut is screwed into valve rod, is pressed on spring, feather key plate inserts in the longitudinal groove of nut one side through the side rectangular hole of spring casing, and sliding nut can not be rotated, and can only move, and feather key plate is screwed on the sidewall of spring casing; Axis is arranged in the horizontal axle sleeve of spring casing, and the two ends of axis are bumped into bearing, and then end cap is set up at the two ends of axle, handle is positioned on one end of axis; Sliding nut has in the horizontal direction and carves type groove near axis one side, corresponding axis and sliding nut contact segment are for carving profile shaft structure with it, by handle, rotate axis, axis can be screwed in the type of the carving groove of sliding nut, make sliding nut can not carry out axial motion; Spring case lid is enclosed within on valve rod, with it, spring casing is sealed, spring case lid is connected with screw with spring casing; Handwheel is positioned on the upper end of valve rod, with nut, fixes.
The lower end surface of described sliding nut has the circular groove that fixing spring is used, and upper-end surface is drilled with two apertures for nut is installed to use on valve rod; One side of sliding nut cylndrical surface has a longitudinal groove, being blocked and can not rotate with feather key plate; The opposite side along continuous straight runs of cylndrical surface has wedge groove, and a limit of wedge groove is circular arc, and another limit is straight line, and carving profile shaft can screw in groove along arc-shaped edges, and sliding nut is blocked.
The shaft part that contacts of described axis and sliding nut wedge groove is one section and carves profile shaft structure, it is non-completely circular structure, a limit in its cross section is circular arc, another two limits are straight line, by the rotation of axle, the arc-shaped edges of axle can screw in the type of the carving groove of sliding nut along the arc-shaped edges of sliding nut, and one of them straight line leans against sliding nut and carves on the straight line of type groove; The two ends of axis are that square axle structure or circular shaft add bond structure, and one end is wherein for the handle of installation manipulator behaviour use, and the other end is for installing the driving bindiny mechanism that automatically controls use.
Described spring casing has valve gap function concurrently, and the lower end structure of its casing, in the quick-opening valve overall structure realizing with this valve rod quick-acting mechanism, for limiting the upwards space of action of valve rod; Bottom in spring casing has the circular groove of using for fixing spring, and ledge structure is arranged at top, for the space that moves downward of limit slippage nut.
Described flap is socketed in the lower end of valve rod with pressure ring, pressure ring, blocks pressure ring to prevent that it is loosening with back-up ring with being threaded with flap; Pressure ring and valve rod are Spielpassung, and valve rod and flap can relatively rotate.
The invention has the beneficial effects as follows: this mechanism can move upward valve rod with automated manner fast, can valve rod be moved upward rapidly in mechanism hand behaviour's mode again; This invention valve rod quick-acting mechanism bearing capacity is large, reliable in action; Be applicable to needs automatically to control, and has again the instant protection valve of mechanism hand behaviour mechanism, is applicable to the high application places of security requirement of valve for centering pressure and high voltage protective; Utilize this mechanism can design corresponding quick-closing valve and quick-opening valve.
accompanying drawing explanation:
Fig. 1 is structural representation of the present invention and the enforcement illustration of realizing quick-opening valve.
Fig. 2 is the side view of Fig. 1.
Fig. 3 is the enforcement illustration of realizing quick-closing valve.
Fig. 4 is sliding nut structural representation plan view.
Fig. 5 is sliding nut structural representation plan view.
Fig. 6 is sliding nut structural representation left view.
Fig. 7 is sliding nut structural representation right elevation.
Fig. 8 is clamping shaft structure schematic diagram.
Fig. 9 is that clamping shaft structure A is to schematic cross-section.
Figure 10 is feather key plate structure schematic diagram plan view.
Figure 11 is feather key plate structure schematic diagram left view.
Figure 12 is sliding nut and axis matching relationship the first example structure schematic diagram.
Figure 13 is sliding nut and axis matching relationship the second example structure schematic diagram.
1-handwheel in figure; 3-valve rod; 4-sliding nut; 5-axis; 6-handle; 7-feather key plate; 8-spring; 9-spring case lid; 10-spring casing; 11-flap; 12-pressure ring; 13-back-up ring; 14-valve seat; 15-valve body; 18-bearing; 19 end caps.
embodiment:
With reference to accompanying drawing, a kind of valve rod quick-acting mechanism that makes progress, the lower end surface of described sliding nut 4 has the circular groove that fixing spring is used, and upper-end surface is drilled with two apertures for nut is used toward installing on valve rod 3; One side of sliding nut 4 cylndrical surface has a longitudinal groove, being blocked and can not rotate with feather key plate 7; The opposite side along continuous straight runs of cylndrical surface has wedge groove, and a limit of wedge groove is circular arc, and another limit is straight line, and carving profile shaft can screw in groove along arc-shaped edges, and sliding nut 4 is blocked.
The shaft part that contacts of described axis 5 and sliding nut 4 wedge grooves is one section and carves profile shaft structure, it is non-completely circular structure, a limit in its cross section is circular arc, another two limits are straight line, by the rotation of axle, the arc-shaped edges of axle can screw in the type of the carving groove of sliding nut 4 along the arc-shaped edges of sliding nut 4, and one of them straight line leans against sliding nut 4 and carves on the straight line of type groove; The two ends of axis 5 are that square axle structure or circular shaft add bond structure, and one end is wherein for the handle 6 of installation manipulator behaviour use, and the other end is for installing the driving bindiny mechanism that automatically controls use.
Described spring casing 10 has valve gap function concurrently, and the lower end structure of its casing, in the quick-opening valve overall structure realizing with this valve rod quick-acting mechanism, for limiting the upwards space of action of valve rod 3; Bottom in spring casing 10 has the circular groove of using for fixing spring, and ledge structure is arranged at top, for the space that moves downward of limit slippage nut 4.
Embodiment one: in conjunction with Fig. 1,2,4,5,6,7,8,9,10,11,12 and 13 explanation present embodiments.Present embodiment comprises handwheel 1, valve rod 3, sliding nut 4, axis 5, handle 6, feather key plate 7, spring 8, spring case lid 9, spring casing 10, flap 11, pressure ring 12, back-up ring 13, bearing 18, end cap 19, and the flap lower sealing surface on valve rod and the upper sealing surface of the valve seat on valve cooperatively interact and formed a quick open valve.
With pressure ring 12, flap 11 is socketed in to the lower end of valve rod, pressure ring 12 is connected with flap 11 use rib-loops, and back-up ring 13 is embedded in the inner card cage ring of flap, prevents that pressure ring 12 is loosening, and pressure ring 12 is Spielpassung with valve rod 3, and valve rod can rotate relative to flap; The valve rod 3 that flap 11 is housed penetrates arrival spring box body 10 from the bottom of spring casing 10; Bottom in spring casing 10 has circular groove, and for fixing spring use, spring 8 is inserted in the circular groove that valve rod is positioned in spring casing 10 bottom; Sliding nut 4 is screwed into valve rod 3, be pressed on spring 8, feather key plate 7 inserts in the longitudinal groove of nut 4 one sides through the side rectangular hole of spring casing 10, and sliding nut 4 can not be rotated, can only move, feather key plate 7 is screwed on the sidewall of spring casing 10; Axis 5 is arranged in the horizontal axle sleeve of spring casing 10, and the two ends of axis 5 are bumped into bearing 18, and then end cap 19 is set up at the two ends of axle 5, handle 6 is positioned on one end of axis 5; Sliding nut 4 has in the horizontal direction and carves type groove near axis 5 one sides, corresponding axis 5 and sliding nut 4 contact segments are for carving profile shaft structure with it, by handle, rotate axis 5, axis 5 can be screwed in the type of the carving groove of sliding nut 4, make sliding nut 4 can not carry out axial motion; Spring case lid 9 is enclosed within on valve rod 3, with it, spring casing 10 is sealed, spring case lid 9 is connected with spring casing 10 use screws; Handwheel 1 is positioned on the upper end of valve rod 3, with nut, fixes.
Plan view, plan view, left view and right elevation that Fig. 4,5,6 and 7 is sliding nut, the top of the type of the carving groove of the nut in figure is arc structure, lower end is linear structure, and carving in profile shaft section can the screw in nut type of carving groove by turning clockwise of corresponding axis 5, blocks nut 4; See Figure 13, also nut 4 can being carved to type groove, to be designed to top be straight line, and bottom is circular arc, now by being rotated counterclockwise in the type of the carving groove that can screw in nut.
Fig. 8,9 is the structural representation of axis 5, with the shaft part of nut 4 contact segments be that circular arc is carved profile shaft structure.
Figure 10 is the structural representation plan view of feather key plate.
Figure 11 is the structural representation left view of feather key plate.
The top that Figure 12 has described nut 4 wedge grooves is circular arc, is this structure of straight line below, with the screw-in matching relationship of carving type axis.
The top that Figure 13 has described nut 4 wedge grooves is straight line, is this structure of circular arc below, with the screw-in matching relationship of carving type axis.
Fig. 1, when describing valve rod quick-acting mechanism, has also described a kind of quick open valve embodiment who forms with such valve rod quick-acting mechanism, and its working principle is as follows:
When valve rod 3 moves upward with flap 11, when the upper end of flap is withstood by the lower edge of spring casing 10, valve is in full open position, now towards a direction, rotate handwheel 1, continue to open valve, because valve is now in full open position, 3 of valve rods can rotate, valve rod 3 and flap 11 all can up not move again, sliding nut 4 have to start to move downward, and is rotated further handwheel 1, until sliding nut 4 is withstood by the step of spring casing 10 interior upper ends, handwheel 1 cannot rotate again, and spring 8 is compacted; Now by handle 6, rotating axis 5 makes, in its wedge groove that screws in sliding nut 4, sliding nut 4 to be pinned; Now rotate backward handwheel 1, valve rod 3 is down moved together with flap 11, until valve is closed completely, cannot rotate again handwheel 1; When the tight quick-opening valve of needs, or rotate backward axis 5 by handle 6, or by automechanism, rotate backward axis 5 at the other end of axis 5, axis 5 and sliding nut 4 news speed are thrown off, sliding nut 4 and valve rod 3 are interrogated speed and are moved upward under the effect of spring 8, until valve is opened completely.
Embodiment two: present embodiment is described in conjunction with Fig. 3.The lower sealing surface of the valve seat 14 on the flap 11 on valve rod 3 on sealing surface and valve cooperatively interacts and has formed a quick-closing valve door.The working principle of present embodiment and mode of execution one is slightly different, while valve rod 3 being moved upward towards a direction rotation handwheel 1 together with flap 11, valve rod 3 is stopped by the lower sealing surface of valve seat, rather than stopped by the lower edge of spring casing 10, now be rotated further valve rod 3, sliding nut 4 moves downward, until blocked by the step of casing 10; While rotating backward handwheel 1, valve is opened, until handwheel 1 is blocked and cannot rotate again by spring case lid 9, makes the state of valve in being fully opened, rather than because contacting the sealing surface of valve, makes valve in closed condition completely, and cannot rotate handwheel 1 again.
Claims (5)
1. the valve rod quick-acting mechanism that makes progress, mainly comprise handwheel (1), valve rod (3), sliding nut (4), axis (5), handle (6), feather key plate (7), spring (8), spring case lid (9), spring casing (10), flap (11), bearing (18), end cap (19), it is characterized in that: flap (11) is positioned on the lower end of valve rod (3), the valve rod (3) that flap (11) are housed penetrates arrival spring box body (10) from the bottom of spring casing (10); Bottom in spring casing (10) has circular groove, and for fixing spring use, spring (8) is inserted in the circular groove that valve rod is positioned on bottom in spring casing (10); Sliding nut (4) is screwed into valve rod (3), be pressed on spring (8), feather key plate (7) inserts in the longitudinal groove of nut (4) one sides through the side rectangular hole of spring casing (10), sliding nut (4) can not be rotated, can only move, feather key plate (7) is screwed on the sidewall of spring casing (10); Axis (5) is arranged in the horizontal axle sleeve of spring casing (10), and the two ends of axis (5) are bumped into bearing (18), and then end cap (19) is set up at the two ends of axle (5), and handle (6) is positioned on one end of axis (5); Sliding nut (4) has in the horizontal direction and carves type groove near axis (5) one sides, corresponding axis (5) and sliding nut (4) contact segment are for carving profile shaft structure with it, by handle (6), rotate axis (5), axis (5) can be screwed in the type of the carving groove of sliding nut (4), make sliding nut (4) can not carry out axial motion; Spring case lid (9) is enclosed within to valve rod (3) upper, with it, spring casing (10) is sealed, spring case lid (9) is connected with screw with spring casing (10); Handwheel (1) is positioned on the upper end of valve rod (3), with nut, fixes.
2. a kind of valve rod according to claim 1 quick-acting mechanism that makes progress, is characterized in that: the lower end surface of described sliding nut (4) has the circular groove that fixing spring is used, and upper-end surface is drilled with two apertures for nut is used toward upper installation of valve rod (3); One side of sliding nut (4) cylndrical surface has a longitudinal groove, being blocked and can not rotate with feather key plate (7); The opposite side along continuous straight runs of cylndrical surface has wedge groove, and a limit of wedge groove is circular arc, and another limit is straight line, and carving profile shaft can screw in groove along arc-shaped edges, and sliding nut (4) is blocked.
3. a kind of valve rod according to claim 1 quick-acting mechanism that makes progress, it is characterized in that: the shaft part that contacts of described axis (5) and sliding nut (4) wedge groove is one section and carves profile shaft structure, it is non-completely circular structure, a limit in its cross section is circular arc, another two limits are straight line, by the rotation of axle, the arc-shaped edges of axle can screw in the type of the carving groove of sliding nut (4) along the arc-shaped edges of sliding nut (4), and one of them straight line leans against sliding nut (4) and carves on the straight line of type groove; The two ends of axis (5) are that square axle structure or circular shaft add bond structure, and one end is wherein for the handle (6) of installation manipulator behaviour use, and the other end is for installing the driving bindiny mechanism that automatically controls use.
4. a kind of valve rod according to claim 1 quick-acting mechanism that makes progress, it is characterized in that: described spring casing (10) has valve gap function concurrently, the lower end structure of its casing, in the quick-opening valve overall structure realizing with this valve rod quick-acting mechanism, for limiting the upwards space of action of valve rod (3); Bottom in spring casing (10) has the circular groove of using for fixing spring, and ledge structure is arranged at top, for the space that moves downward of limit slippage nut (4).
5. a kind of valve rod according to claim 1 quick-acting mechanism that makes progress, it is characterized in that: described flap (11) is socketed in the lower end of valve rod with pressure ring (12), pressure ring (12), blocks pressure ring (12) to prevent that it is loosening with back-up ring (13) with being threaded with flap; Pressure ring (12) is Spielpassung with valve rod (3), and valve rod (3) can relatively rotate with flap (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747653.1A CN103671980B (en) | 2013-12-31 | 2013-12-31 | A kind of valve rod upwards quick-acting mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310747653.1A CN103671980B (en) | 2013-12-31 | 2013-12-31 | A kind of valve rod upwards quick-acting mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103671980A true CN103671980A (en) | 2014-03-26 |
| CN103671980B CN103671980B (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310747653.1A Active CN103671980B (en) | 2013-12-31 | 2013-12-31 | A kind of valve rod upwards quick-acting mechanism |
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| CN (1) | CN103671980B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222904Y (en) * | 1995-03-13 | 1996-03-20 | 邹锡安 | Valve for liquid level meter for boiler |
| JP2001173832A (en) * | 1999-12-15 | 2001-06-29 | Yokota Seisakusho:Kk | Constant flow valve system with liquid level control mechanism |
| CN2835718Y (en) * | 2005-08-07 | 2006-11-08 | 董汉翔 | Quick cut-off valve |
| CN2929383Y (en) * | 2006-06-23 | 2007-08-01 | 中外合资宁波埃美柯铜阀门有限公司 | Rail type cock valve |
| CN201363478Y (en) * | 2009-01-19 | 2009-12-16 | 浙江欧斯特泵阀有限公司 | Valve operating mechanism |
| CN203627838U (en) * | 2013-12-31 | 2014-06-04 | 中国船舶重工集团公司第七�三研究所 | Upward quick acting mechanism for valve rod of valve |
-
2013
- 2013-12-31 CN CN201310747653.1A patent/CN103671980B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2222904Y (en) * | 1995-03-13 | 1996-03-20 | 邹锡安 | Valve for liquid level meter for boiler |
| JP2001173832A (en) * | 1999-12-15 | 2001-06-29 | Yokota Seisakusho:Kk | Constant flow valve system with liquid level control mechanism |
| CN2835718Y (en) * | 2005-08-07 | 2006-11-08 | 董汉翔 | Quick cut-off valve |
| CN2929383Y (en) * | 2006-06-23 | 2007-08-01 | 中外合资宁波埃美柯铜阀门有限公司 | Rail type cock valve |
| CN201363478Y (en) * | 2009-01-19 | 2009-12-16 | 浙江欧斯特泵阀有限公司 | Valve operating mechanism |
| CN203627838U (en) * | 2013-12-31 | 2014-06-04 | 中国船舶重工集团公司第七�三研究所 | Upward quick acting mechanism for valve rod of valve |
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| Publication number | Publication date |
|---|---|
| CN103671980B (en) | 2015-09-16 |
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Effective date of registration: 20151221 Address after: 150090 No. 35, Honghu Road, Yingbin Road, Harbin hi tech Development Zone, Heilongjiang, China Patentee after: Harbin broad power technology development Co., Ltd. Address before: 150000 Honghu Road, Daoli District, Heilongjiang, No. 35, Harbin Patentee before: No.703 Inst. China Ship Heavy Industry Group Co. |