CN202972147U - Marching-type hydraulic actuator used for underwater throttle valve - Google Patents
Marching-type hydraulic actuator used for underwater throttle valve Download PDFInfo
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- CN202972147U CN202972147U CN 201220737186 CN201220737186U CN202972147U CN 202972147 U CN202972147 U CN 202972147U CN 201220737186 CN201220737186 CN 201220737186 CN 201220737186 U CN201220737186 U CN 201220737186U CN 202972147 U CN202972147 U CN 202972147U
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- throttle valve
- under water
- marching
- gear
- hydraulic actuator
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Abstract
The utility model discloses a marching-type hydraulic actuator used for an underwater throttle valve. The marching-type hydraulic actuator used for the underwater throttle valve comprises a lower shell body and an upper end cover which are fixedly connected, and further comprises a pair of marching mechanisms, a transmission mechanism, a gear disk and a pair of manual mechanisms, wherein the marching mechanisms, the transmission mechanism, the gear disk and the pair of manual mechanisms are all surrounded by the lower shell body and the upper end cover, the marching mechanisms are connected with a balance oil storage device through an oil pipeline and arranged along the up and down direction; the transmission mechanism is connected with the marching mechanisms and transmits energy generated by the marching mechanisms; the gear disk is connected with the transmission mechanism and transfers the energy transmitted by the transmission mechanism to be power for moving of an underwater throttle valve rod, and an inner hole of the gear disk is matched with an underwater throttle valve rod sleeve and the underwater throttle valve rod; and the pair of manual mechanisms are correspondingly connected with the marching mechanisms and are operated to act through a wrench. When the marching-type hydraulic actuator used for the underwater throttle valve works normally, hydraulic power can be transferred into the moving power for the underwater throttle valve rod, and marching-type control of opening, closing and opening degree for the underwater throttle valve is achieved; and when liquid supply is abnormal or has faults, the marching-type control for the underwater throttle valve can be achieved through emergency operation of the manpower hydraulic wrench.
Description
Technical field
The utility model relates to a kind of marine oil and gas drilling-production equipment, and is particularly a kind of for the step type hydraulic actuator of throttle valve under water.
Background technique
At present; country is defined as one of high-end equipment manufacturing industry emphasis with the Offshore Engineering equipment; in offshore and gas development, throttle valve is widely used on various manufacturing mechanisms under water, still under water; nowadays under water in the drilling operation process; generally can only control various valves under water by remote-operated mode, during especially abnormal when feed flow or fault, bring great inconvenience to maintenance especially; greatly reduce working efficiency, increased cost of production.
The model utility content
The purpose of this utility model is to provide a kind of for the step type hydraulic actuator of throttle valve under water, when normal operation, can be converted into the motion-promotion force of throttle valve valve rod under water to hydraulic power, realize to throttle valve under water unlatching, close and the step-by-step movement of aperture is controlled; During abnormal or fault, can realize that the step-by-step movement of throttle valve is controlled under water at feed flow by the emergency operation of artificial hydraulic pressure spanner.
In order to realize above purpose, the utility model is achieved through the following technical solutions:
A kind of for the step type hydraulic actuator of throttle valve under water, comprise the lower shell body and the upper end cap that are fixedly connected with, under normal working, be full of hydraulic oil in the encirclement chamber between described lower shell body and upper end cap, also comprise and be surrounded by lower shell body and upper end cap:
A pair of stepping mechanism, described a pair of stepping mechanism passed through oil pipeline and were connected with the balance oil storage equipment of outside, and this a pair of stepping mechanism is arranged up and down;
Driving mechanism, described driving mechanism is connected with stepping mechanism, transmits the kinetic energy that stepping mechanism produces;
Gear disk, described gear disk is connected with driving mechanism, and its Conversion of Energy with the driving mechanism transmission is to supply the power of throttle valve stem movement under water, and the endoporus of this gear disk is with valve stem casing and the valve rod of throttle valve are complementary under water;
A pair of man-operated mechanism, described a pair of man-operated mechanism is corresponding with a pair of stepping mechanism to be connected, by the wrench operated man-operated mechanism action of outside.
Also comprise and be arranged on upper end cap: pointer retarder, indicating hand component and indication dial plate; Described pointer retarder is connected with gear disk, and described indicating hand component is connected with the pointer retarder, and described indication dial plate is provided with graduation indication opening state or the opening information of throttle valve under water.
Described each stepping mechanism comprises:
Fluid cylinder;
The fluid cylinder gland, described fluid cylinder gland lid is located on fluid cylinder, and this fluid cylinder gland is provided with hydraulic fluid port;
Piston, described piston is arranged in fluid cylinder, and this piston is reciprocating in fluid cylinder;
U-shaped dop, the internal thread of described U-shaped dop is connected with the threaded end of piston;
Ratchet, described ratchet is fixedly connected with U-shaped dop, and when the U-shaped dop of piston promotion, U-shaped dop drives the ratchet action;
The lock pawl, the lock pawl of described two stepping mechanisms is closed assembly up and down, and the arc end of described U-shaped dop is pushed down the lock pawl of another one stepping mechanism;
Ratchet, the coaxial ratchet of described two stepping mechanisms installs but profile of tooth is opposite.
The front end external diameter face of described piston is provided with the hydraulic pressure oilhole, and this hydraulic pressure oilhole passed through oil pipeline and is connected with the balance oil storage equipment of outside.
Described driving mechanism comprises:
Gear, described gear is fixedly connected with gear disk;
Shaftgear, described shaftgear are arranged in the interior geared sleeve of lower shell body;
Lower speed change gear, described lower speed change gear is arranged on the axle of shaftgear, this time speed change gear and gear engagement;
Driving gear, described driving gear and shaftgear mesh, and the ratchet of two stepping mechanisms is installed on the axle of this driving gear.
Described man-operated mechanism comprises: rocking arm and the pitman arm shaft that passes rocking arm; Pull described pitman arm shaft by the spanner of outside; Described rocking arm is connected with piston, and pitman arm shaft drives rocking arm, this rocking arm pushing piston action.
Comprise on described upper end cap:
Two test holes are provided with compensating film in described test hole;
Net-filter assembly, described net-filter assembly are provided with filter screen and the fixing filter screen dop of filter screen, and described filter screen deadens compensating film;
Test hole enclosing cover and test hole inner cap, described test hole enclosing cover and test hole inner cap cover the test hole mouth from the outside and the inboard of test hole respectively.
Also be provided with electric interfaces on described lower shell body, be used for by controlling the hydraulic oil pipeline and crossing oil pipeline.
The utility model compared with prior art has the following advantages:
1, in when normal operation, can be converted into the straight line motion power of throttle valve valve rod under water to hydraulic power, realize to throttle valve under water unlatching, close and the step-by-step movement of aperture is controlled;
2, during or fault abnormal at feed flow, can realize that the step-by-step movement of throttle valve is controlled under water by the emergency operation of artificial hydraulic pressure spanner.
Description of drawings
Fig. 1 is that the utility model is a kind of for the structural representation of the step type hydraulic actuator of throttle valve under water;
Fig. 2 is that the utility model is a kind of for internal structure schematic diagram after the removal upper end cap of the step type hydraulic actuator of throttle valve under water;
Fig. 3 is that the utility model is a kind of for the upper end cap schematic diagram of the step type hydraulic actuator of throttle valve under water;
Fig. 4 is the upper end cap test hole partial enlarged view in Fig. 1;
Fig. 5 is that the utility model is a kind of for the step-by-step operation schematic diagram of the step type hydraulic actuator of throttle valve under water.
Embodiment
Below in conjunction with accompanying drawing, by describing a better specific embodiment in detail, the utility model is further elaborated.
As shown in Fig. 1 ~ 4, a kind of for the step type hydraulic actuator of throttle valve under water, comprise the lower shell body 1 and the upper end cap 37 that are fixedly connected with, upper end cap 37 is connected with lower shell body by 38 connections of several screws, and determine the mounting point by locating stud 39, under normal working, be full of hydraulic oil in the encirclement chamber between lower shell body 1 and upper end cap 37, also comprise and be surrounded by lower shell body 1 and upper end cap 37: a pair of stepping mechanism, driving mechanism, gear disk 2, a pair of man-operated mechanism.Wherein, a pair of stepping mechanism passed through oil pipeline and was connected with the balance oil storage equipment of outside, and this a pair of stepping mechanism is arranged up and down, is respectively used to control the opening and closing of throttle valve under water, and can regulate the aperture of throttle valve under water opening and closing between the position; Driving mechanism is connected with stepping mechanism, transmits the kinetic energy that stepping mechanism produces; Gear disk 2 is connected with driving mechanism, and its Conversion of Energy with the driving mechanism transmission is to supply the power of throttle valve stem movement under water, and the endoporus of this gear disk 2 is with valve stem casing and the valve rod of throttle valve are complementary under water; A pair of man-operated mechanism is corresponding with a pair of stepping mechanism to be connected, by the wrench operated man-operated mechanism action of outside.In the present embodiment, also comprise and be arranged on upper end cap 37: pointer retarder 40, indicating hand component 41 and indication dial plate 52; Pointer retarder 40 is connected with gear disk 2, and indicating hand component 41 is connected with pointer retarder 40, and indication dial plate 52 is provided with graduation indication opening state or the opening information of throttle valve under water.
As shown in Figure 1, 2, wherein, each stepping mechanism comprises: fluid cylinder 23, fluid cylinder gland 25, piston 26, U-shaped dop 42, ratchet 43, lock pawl 45 and ratchet 32.Wherein, there is spring 28 fluid cylinder 23 inside, and fluid cylinder gland 25 lids are located on fluid cylinder 23, and this fluid cylinder gland 25 is provided with hydraulic fluid port; Piston 26 is arranged in fluid cylinder 23, and by the sealing of O type circle, this piston 26 is reciprocating in fluid cylinder 23, and in the present embodiment, the front end external diameter face of piston 26 is provided with the hydraulic pressure oilhole, and this hydraulic pressure oilhole passed through oil pipeline and is connected with the balance oil storage equipment of outside; The internal thread of U-shaped dop 42 is connected with the threaded end of piston 26; Ratchet 43 is connected with U-shaped dop 42, and fixing by detent pin 44, when piston 26 promotes U-shaped dop 42, U-shaped dop 42 drives ratchet 43 actions, in the present embodiment, strains by driving spring 47 between 2 ratchets 43, between 2 mortice lock pawls 45, by locking spring 48 tensions, spring is 2 of up and down; The lock pawl of two stepping mechanisms closed assembly Shang Xia 45, centre have lock pawl pin 46 to pass, and the arc end of U-shaped dop 42 is pushed down the lock pawl 45 of another one stepping mechanism; The coaxial installation of ratchet 32 of two stepping mechanisms but profile of tooth is opposite, separated by the wear-resistant gasket 35 with keyway between the ratchet 32 of these two stepping mechanisms, in the present embodiment, when pinning corresponding ratchet 32, a side chain pawl 45 can prevent its forward, but allow its counter-rotating, can be under the drive of opposite side ratchet 43, with another sheet ratchet 32 rotating Vortexes.In the present embodiment, on two fluid cylinder glands 25, a work has " unlatching ", and another work has the mark of " closing ".
As shown in Figure 1, driving mechanism comprises: gear 5, shaftgear 10, lower speed change gear 14, driving gear 16.Wherein, gear 5 is fixedly connected with gear disk 2, and in the present embodiment, gear 5, gear disk 2 and the coaxial connection of lower shell body 1 are connected by bolt 6 between gear disk 2 and gear 5; Shaftgear 10 is arranged in the interior geared sleeve 11 of lower shell body 1; Lower speed change gear 14 is arranged on the axle of shaftgear 10, and connects by key, this time speed change gear 14 and gear 5 engagements; Driving gear 16 meshes with shaftgear 10, and the ratchet 32 of two stepping mechanisms is installed on the axle of this driving gear 16, and driving gear 16 is connected by key with ratchet 32, and in the present embodiment, two ratchets 32 are respectively used to control rotating and reverse of driving gear 16.
As shown in Figure 1, 2, man-operated mechanism comprises: rocking arm 21 and the pitman arm shaft 20 that passes rocking arm 21, and in the present embodiment, pitman arm shaft 20 is connected with rocking arm 21 by square key; Pull pitman arm shaft 20 by the spanner of outside; Rocking arm 21 is connected with piston 26, and pitman arm shaft 20 drives rocking arm 21, these rocking arm 20 pushing piston 26 actions.
As shown in Fig. 1,3, comprise on upper end cap 37: two test holes and net-filter assembly.Wherein, be provided with compensating film 54 in test hole; Net-filter assembly is provided with filter screen and the fixing filter screen dop 53 of filter screen, and filter screen is used for deadening compensating film 54, and compensating film 54 is used for balance actuator cavity pressure to be changed; Test hole enclosing cover 55 and test hole inner cap 56, test hole enclosing cover 55 and test hole inner cap 56 cover the test hole mouth from the outside and the inboard of test hole respectively, and this test hole enclosing cover 55 and test hole inner cap 56 pass through bolton.In the present embodiment, test hole is used for when carrying out product testing in the actuator chamber (between lower shell body 1 and upper end cap 37 encirclement chamber in) injection liquid force feed and uses as watch window, when as watch window, the test hole enclosing cover 55 of need dismantling is judged situation in the chamber by observing compensating film 54.
In the present embodiment, also be provided with electric interfaces on lower shell body 1, be used for by controlling the hydraulic oil pipeline and crossing oil pipeline.
when under open water during throttle valve, initial elastic force due to spring 28, the initial position of piston 26 is positioned at fluid cylinder 23 topmost (reference direction shown in Figure 1), control hydraulic oil and enter the oil storage tank of fluid cylinder 23 by the hydraulic fluid port on the fluid cylinder gland 25 of mark " unlatching ", along with the groove internal pressure increases, piston 26 is in the interior downward motion of fluid cylinder 23, and Compress Spring 28, fluid cylinder is full of hydraulic oil in 23 chambeies, and along with piston 26 motions, the chamber inner volume reduces, and hydraulic oil flows to outside balance oil storage equipment by the oil pipeline of crossing that is connected to piston 26, it is downward that piston 26 promotes U-shaped dop 42, and U-shaped dop 42 is connected on ratchet 43, and under the position-limiting action of driving spring 47 pulling force and backing pin 59, the pawl head of ratchet 43 is stuck in the between cog of corresponding ratchet 32, stirs ratchet 32 and turns over 1 profile of tooth, at this moment, the lock pawl 45 that promotes another stepping mechanism due to the arc end part of U-shaped dop 42 rotates around lock pawl pin 46, withdrawal is stuck in the pawl head of ratchet 32 between cog of another stepping mechanism, make 2 ratchets while rotations under the stirring of the ratchet 43 of this stepping mechanism, this mode of controlling hydraulic pressure is pulsed, after ratchet 32 turns over 1 profile of tooth, the hydraulic pressure stop supplies, piston 26 is returned to initial position under the elastic force effect of spring 28, fluid cylinder 23 chamber inner volumes increase, the equilibrium liquid force feed flows back to by crossing oil pipeline, the pawl head of locking simultaneously pawl 45 is stuck in the between cog of ratchet 32, prevent its counter-rotating, piston 26 pulls U-shaped dop 42 to regain, and the pawl head of ratchet 43 leaves the between cog of ratchet 32, at this moment, U-shaped dop 42 is cancelled for the thrust that the lock pawl 45 of another stepping mechanism provides, lock pawl 45 is returned to initial position, so far, completes a stepping process (as shown in Figure 5).
Because 16 of ratchet 32 and driving gears are connected by key, so driving gear 16 is also completed a stepping process thereupon; Driving gear 16 and shaftgear 10 engagements, lower speed change gear 14 is connected with shaftgear 10, and meshes with gear 5, and by this a series of gear transmission, the rotation of driving gear 16 is converted into the rotation of gear 5; Owing to being bolted between gear 5 and gear disk 2, gear disk 2 endoporus are connected with valve stem casing and the valve rod of supporting throttle valve under water, the throttle valve valve stem casing rotates so the rotation of gear 5 can drive under water, promotes valve rod and rotates along its axial straight line, and then change the flow of throttle valve under water.
Control in pulsed under the effect of hydraulic pressure, repeat above action, the operation that can complete throttle valve under the step-by-step movement open water or increase throttle valve opening; Pointer retarder 40 is housed on upper end cap 37, retarder is connected with gear disk 2, gear disk 2 is delivered to indicating hand component 41 after rotating and by pointer retarder 40, rotating speed being reduced, and pointer swings thereupon, indicates opening state or the opening information of throttle valve under water on indication dial plate 52.
When closing under water throttle valve, control hydraulic oil by enter the oil storage tank of the fluid cylinder 23 of same stepping mechanism with the hydraulic fluid port on the fluid cylinder gland 25 of " closing " mark, along with the groove internal pressure increases, piston 26 promotes U-shaped dops 42 and moves downward, and the pawl head of ratchet 43 is stuck in ratchet 32 between cog and promotes it and turn over 1 profile of tooth; At this moment, promote the lock pawl 45 of another stepping mechanism due to the arc end part of U-shaped dop 42, make its pawl head leave the ratchet 32 reverse with last ratchet, but so ratchet 32 forwards turn over 1 profile of tooth, and oppositely ratchet 32 oppositely turns over 1 profile of tooth simultaneously thereupon; Ratchet 32 is converted into the counterrotating of throttle valve valve stem casing under water through gear drives, and the band ovable valve stem is controlled in pulsed under the effect of hydraulic power along its axial reversing motion, can progressively reduce the aperture of throttle valve under water until close; The open/close states of throttle valve or opening information under readable water outlet on indication dial plate 52.
In the present embodiment, if requiring under water, the flow of throttle valve keeps certain value, can be after on indication dial plate 52, reading reaches the requirement opening value, the stop pulse formula is controlled the input of hydraulic pressure, the pawl head of two side chain pawls 45 blocks respectively corresponding ratchet 32, making under water, the valve rod of throttle valve remains on current location, guarantee that flow fixes, therefore can control under water that throttle valve is moving under any opening degree condition between 2 limit positions of opening and closing, and read the opening information of throttle valve under water by the reading on indication dial plate 52.
In a single day when the situation of normal hydraulic control inefficacy or feed flow fault occuring, can realize that the step-by-step movement of throttle valve is controlled under water by man-operated mechanism.If need the aperture of open valve or increase valve, clockwise rotate after catching the end of opening pitman arm shaft 20 corresponding to stepping mechanism with outside hydraulic spanner; pitman arm shaft 20 drives rocking arm 21; stir piston 26 and move downward; drive ratchet 43 rotating ratchets 32; after spanner rotation pitman arm shaft 20 reaches 1/4 circle; piston 26 reaches maximum process amount; shed the spanner moment of torsion; piston 26 is regained under the elastic force of spring 28, completes a step-by-step operation, and spanner again applies torque axis and shakes arm axle 20; so repeatedly, until the reading of indication dial plate 52 reaches the aperture of job requirement; If need cut-off valve or reduce the aperture of valve, catch with hydraulic spanner and close pitman arm shaft corresponding to stepping mechanism 20 and apply moment of torsion, repeat above step, can realize controlling.
In sum, the utility model is a kind of for the step type hydraulic actuator of throttle valve under water, in when normal operation, can be converted into the motion-promotion force of throttle valve valve rod under water to hydraulic power, realize to throttle valve under water unlatching, close and the step-by-step movement of aperture is controlled; During abnormal or fault, can realize that the step-by-step movement of throttle valve is controlled under water at feed flow by the emergency operation of artificial hydraulic pressure spanner.
Although content of the present utility model has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to restriction of the present utility model.After those skilled in the art have read foregoing, for multiple modification of the present utility model with to substitute will be all apparent.Therefore, protection domain of the present utility model should be limited to the appended claims.
Claims (8)
1. one kind is used for the step type hydraulic actuator of throttle valve under water, it is characterized in that, comprise the lower shell body (1) and the upper end cap (37) that are fixedly connected with, under normal working, be full of hydraulic oil in encirclement chamber between described lower shell body (1) and upper end cap (37), also comprise and be surrounded by lower shell body (1) and upper end cap (37):
A pair of stepping mechanism, described a pair of stepping mechanism passed through oil pipeline and were connected with the balance oil storage equipment of outside, and this a pair of stepping mechanism is arranged up and down;
Driving mechanism, described driving mechanism is connected with stepping mechanism, transmits the kinetic energy that stepping mechanism produces;
Gear disk (2), described gear disk (2) is connected with driving mechanism, and its Conversion of Energy with the driving mechanism transmission is to supply the power of throttle valve stem movement under water, and the endoporus of this gear disk (2) is with valve stem casing and the valve rod of throttle valve are complementary under water;
A pair of man-operated mechanism, described a pair of man-operated mechanism is corresponding with a pair of stepping mechanism to be connected, by the wrench operated man-operated mechanism action of outside.
2. as claimed in claim 1ly it is characterized in that for the step type hydraulic actuator of throttle valve under water, also comprise and be arranged on upper end cap (37): pointer retarder (40), indicating hand component (41) and indication dial plate (52); Described pointer retarder (40) is connected with gear disk (2), and described indicating hand component (41) is connected with pointer retarder (40), and described indication dial plate (52) is provided with graduation indication opening state or the opening information of throttle valve under water.
3. as claimed in claim 1ly it is characterized in that for the step type hydraulic actuator of throttle valve under water, described each stepping mechanism comprises:
Fluid cylinder (23);
Fluid cylinder gland (25), described fluid cylinder gland (25) lid is located on fluid cylinder (23), and this fluid cylinder gland (25) is provided with hydraulic fluid port;
Piston (26), described piston (26) are arranged in fluid cylinder (23), and this piston (26) is reciprocating in fluid cylinder (23);
U-shaped dop (42), the internal thread of described U-shaped dop (42) is connected with the threaded end of piston (26);
Ratchet (43), described ratchet (43) is fixedly connected with U-shaped dop (42), and when piston (26) promotes U-shaped dop (42), U-shaped dop (42) drives ratchet (43) action;
Lock pawl (45), the lock pawl (45) of described two stepping mechanisms is closed assembly up and down, and the arc end of described U-shaped dop (42) is pushed down the lock pawl (45) of another one stepping mechanism;
Ratchet (32), the coaxial installation of the ratchet of described two stepping mechanisms (32) but profile of tooth is opposite.
4. as claimed in claim 3ly it is characterized in that for the step type hydraulic actuator of throttle valve under water, the front end external diameter face of described piston (26) is provided with the hydraulic pressure oilhole, and this hydraulic pressure oilhole passed through oil pipeline and is connected with the balance oil storage equipment of outside.
5. as claimed in claim 3ly it is characterized in that for the step type hydraulic actuator of throttle valve under water, described driving mechanism comprises:
Gear (5), described gear (5) is fixedly connected with gear disk (2);
Shaftgear (10), described shaftgear (10) are arranged in the interior geared sleeve of lower shell body (1);
Lower speed change gear (14), described lower speed change gear (14) is arranged on the axle of shaftgear (10), this time speed change gear (14) and gear (5) engagement;
Driving gear (16), described driving gear (16) meshes with shaftgear (10), and the ratchet (32) of two stepping mechanisms is installed on the axle of this driving gear (16).
6. as claimed in claim 3ly it is characterized in that for the step type hydraulic actuator of throttle valve under water, described man-operated mechanism comprises: rocking arm (21) and pass the pitman arm shaft (20) of rocking arm (21); Pull described pitman arm shaft (20) by the spanner of outside; Described rocking arm (21) is connected with piston (26), and pitman arm shaft (20) drives rocking arm (21), this rocking arm (20) pushing piston (26) action.
7. as claimed in claim 1ly it is characterized in that for the step type hydraulic actuator of throttle valve under water, described upper end cap comprises on (37):
Two test holes are provided with compensating film (54) in described test hole;
Net-filter assembly, described net-filter assembly are provided with filter screen and the fixing filter screen dop (53) of filter screen, and described filter screen deadens compensating film (54);
Test hole enclosing cover (55) and test hole inner cap (56), described test hole enclosing cover (55) and test hole inner cap (56) cover the test hole mouth from the outside and the inboard of test hole respectively.
8. as claimed in claim 1ly it is characterized in that for the step type hydraulic actuator of throttle valve under water, described lower shell body also is provided with electric interfaces on (1), is used for by controlling the hydraulic oil pipeline and crossing oil pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737186 CN202972147U (en) | 2012-12-28 | 2012-12-28 | Marching-type hydraulic actuator used for underwater throttle valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220737186 CN202972147U (en) | 2012-12-28 | 2012-12-28 | Marching-type hydraulic actuator used for underwater throttle valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202972147U true CN202972147U (en) | 2013-06-05 |
Family
ID=48513223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220737186 Expired - Fee Related CN202972147U (en) | 2012-12-28 | 2012-12-28 | Marching-type hydraulic actuator used for underwater throttle valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202972147U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016827A (en) * | 2012-12-28 | 2013-04-03 | 上海神开石油化工装备股份有限公司 | Stepping hydraulic actuator for underwater throttle valve |
| CN107131347A (en) * | 2017-06-19 | 2017-09-05 | 上海翱泽石油设备有限公司 | A kind of high-precision valve gate driver |
-
2012
- 2012-12-28 CN CN 201220737186 patent/CN202972147U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103016827A (en) * | 2012-12-28 | 2013-04-03 | 上海神开石油化工装备股份有限公司 | Stepping hydraulic actuator for underwater throttle valve |
| CN103016827B (en) * | 2012-12-28 | 2015-01-07 | 上海神开石油化工装备股份有限公司 | Stepping hydraulic actuator for underwater throttle valve |
| CN107131347A (en) * | 2017-06-19 | 2017-09-05 | 上海翱泽石油设备有限公司 | A kind of high-precision valve gate driver |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130605 Termination date: 20151228 |
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| EXPY | Termination of patent right or utility model |