CN203272969U - Large-aperture quick-closing and buffering pneumatic actuator for valve - Google Patents
Large-aperture quick-closing and buffering pneumatic actuator for valve Download PDFInfo
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- CN203272969U CN203272969U CN 201320307124 CN201320307124U CN203272969U CN 203272969 U CN203272969 U CN 203272969U CN 201320307124 CN201320307124 CN 201320307124 CN 201320307124 U CN201320307124 U CN 201320307124U CN 203272969 U CN203272969 U CN 203272969U
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Abstract
The utility model belongs to the field of valve controllers, and relates to a large-aperture quick-closing and buffering pneumatic actuator for a valve. According to the large-aperture quick-closing and buffering pneumatic actuator for the valve, air guide boards matched with pistons are arranged in air cylinders, each air guide board is provided with an air inlet and a plurality of air outlets, when air inflows, the air outlets are sealed through the sealing pistons to achieve the normal air inflowing of the air inlets, when the air outflows, the sealing pistons are moved to achieve the quick air exhausting of the air outlets, the pneumatic actuator is simple and ingenious in structure and achieves the quick closing, and accordingly the safety performance of the pneumatic actuator is improved greatly when the pneumatic actuator is used; buffering air outlets are formed in the air guide boards, when the air outflows, the pistons move to be near the air guide boards, sealing shafts of the pistons and matching holes in the air guide boards block the communication between the air cylinders and the air outlets, gas only can be discharged slowly out of the buffering air outlets, the buffering effect is achieved, abrasion on the pistons in the working process is reduced, and the service life of the pneumatic actuator is prolonged.
Description
Technical field
The utility model belongs to the valve positioner field, relates to a kind of large bore valves with quick closing valve band buffering pneumatic actuator.
Background technique
Pneumatic actuator is a kind of device of the open and close for control valve.When the machine operation was broken down, the quick closedown of pneumatic actuator was the key that guarantees that machine does not damage.But existing pneumatic actuator is closed and is needed the regular hour, reacts slower, and Security can not well ensure; On the other hand, when pneumatic actuator is closed the wearing and tearing of the piston place of being mated larger, easily damage, this not only has influence on the working life of pneumatic actuator, if pneumatic actuator can't work, when fault occurs directly to cause the damage of machine, cause huge economic loss.
Summary of the invention
The utility model is in order to make up the deficiencies in the prior art, but provides large bore valves that a kind of Quick air-discharge simple in structure closed, had good pooling feature with quick closing valve band buffering pneumatic actuator.
the utility model is by the following technical solutions: large bore valves is with quick closing valve band buffering pneumatic actuator, it is characterized in that: comprise the first cylinder, the second cylinder and final controlling element, described the first cylinder and the second cylinder are arranged on the both sides of final controlling element, described the first cylinder includes first piston, described the second cylinder includes the second piston, described final controlling element includes shift fork, described first piston and the second piston interconnect setting by a piston rod, described shift fork is connected to the middle part of piston rod and links with piston rod, when described the first cylinder and the second cylinder intake, first piston and the second piston are movable in the first cylinder and the second cylinder and link with piston rod respectively, piston rod drives the shift fork activity and opens final controlling element, when described the first cylinder and the second cylinder exhaust, first piston and the second piston be reverse activity in the first cylinder and the second cylinder respectively, and piston rod drives the shift fork reverse activity and closes final controlling element.
as a kind of improvement, described the first cylinder also includes the first cylinder block, be arranged on the first spring in the first cylinder block, the first aeroscopic plate, the first connecting plate and the first end cap, one end of described the first spring is arranged on the first cylinder block and covers away from the first end of final controlling element, the other end of described the first spring connects first piston, described the first connecting plate is arranged on the other end of relative the first end cap of the first cylinder block, be provided with the first suction port on described the first connecting plate, described the first aeroscopic plate is fixedly installed on the first cylinder block between the first connecting plate and first piston, described the first aeroscopic plate is provided with the second suction port, a plurality of the first air outlets, first cushions the air outlet, the first matching hole and the second matching hole, described the second suction port is arranged on the first aeroscopic plate one side and communicates with the first matching hole, described first cushions the air outlet is arranged on the inner chamber that is communicated with the second suction port and the first cylinder block on the first aeroscopic plate, described a plurality of the first air outlet is radial and evenly distributes on the first aeroscopic plate circumference and communicate with the second matching hole, described the second matching hole respectively with the first matching hole, the first suction port is connected, be provided with the first packed-piston that matches with the second matching hole in described the second matching hole, be provided with the first seal shaft that matches with the first matching hole on described first piston.
as a kind of improvement, described the second cylinder also includes the second cylinder block, the second aeroscopic plate and the second connecting plate, described the second connecting plate is arranged on the distal portion of the second relative piston rod of cylinder block, be provided with the 3rd suction port on described the second connecting plate, described the second aeroscopic plate is fixedly installed on the second cylinder block between the second connecting plate and the second piston, described the second aeroscopic plate is provided with the 4th suction port, a plurality of the second air outlets, second cushions the air outlet, the 3rd matching hole and the 4th matching hole, described the 4th suction port is arranged on the second aeroscopic plate one side and communicates with the 3rd matching hole, described second cushions the air outlet is arranged on the inner chamber that is communicated with the 4th suction port and the second cylinder block on the second aeroscopic plate, described a plurality of the second air outlet is radial and evenly distributes on the second aeroscopic plate circumference and communicate with the 4th matching hole, described the 4th matching hole respectively with the 3rd matching hole, the 3rd suction port is connected, be provided with the second packed-piston that matches with the 4th matching hole in described the 4th matching hole, be provided with the second seal shaft that matches with the 3rd matching hole on described the second piston.
As a kind of improvement, also include the first caging bolt and the second caging bolt, the first end that described the first caging bolt is arranged on the first cylinder block covers, and described the second caging bolt is arranged on the second connecting plate.
As a kind of improvement, described first end covers and is provided with the first row gas port.
As a kind of improvement, the other end of relative the second connecting plate of described the second cylinder block is provided with the second end cap, is provided with the second row gas port on described the second end cap.
The beneficial effects of the utility model: the aeroscopic plate that coordinates with piston is set in cylinder, have a suction port and a plurality of air outlet on aeroscopic plate, during air inlet, a plurality of air outlets seal sealed piston the normal air inlet that realizes suction port, when giving vent to anger, packed-piston is removed the Quick air-discharge of realizing a plurality of air outlets, simple and ingenious structure and realize the quick closedown of final controlling element, the Security when pneumatic actuator is used improves greatly; Arrange on aeroscopic plate and cushion the air outlet, the piston activity is near aeroscopic plate when exhaust, seal shaft on piston is blocked being communicated with of cylinder and a plurality of air outlets with the matching hole on aeroscopic plate, gas can only be postponed and be gone out the gas port place and slowly discharge, play the effect of buffering, reduce piston wearing and tearing in the course of the work, extend the working life of pneumatic actuator.
Description of drawings
Fig. 1 is that the utility model large bore valves is opened phase diagram with the air inlet of quick closing valve band buffering pneumatic actuator.
Fig. 2 is that the utility model large bore valves cushions the exhaust running state figure of pneumatic actuator with the quick closing valve band.
Fig. 3 is that the utility model large bore valves cushions the closed condition figure of pneumatic actuator with the quick closing valve band.
Embodiment
Below in conjunction with accompanying drawing, specific embodiment of the utility model is elaborated.
As shown in Figure 1, 2, 3, be the specific embodiment of the utility model large bore valves with quick closing valve band buffering pneumatic actuator.this embodiment comprises the first cylinder 1, the second cylinder 2 and final controlling element 3, the first cylinder 1 and the second cylinder 2 are arranged on the both sides of final controlling element 3, the first cylinder 1 includes first piston 11, the second cylinder 2 includes the second piston 21, final controlling element 3 includes shift fork 31, first piston 11 and the second piston 21 interconnect setting by a piston rod 4, shift fork 31 is connected to the middle part of piston rod 4 and links with piston rod 4, when the first cylinder 1 and the second cylinder 2 air inlet, first piston 11 and the second piston 21 respectively movable in the first cylinder 1 and the second cylinder 2 and with piston rod 4 interlocks, piston rod 4 drives shift fork 31 activities and opens final controlling element 3, when the first cylinder 1 and the second cylinder 2 exhaust, first piston 11 and the second piston 21 be reverse activity in the first cylinder 1 and the second cylinder 2 respectively, and piston rod 4 drives shift fork 31 reverse activity and closes final controlling element 3.
as a kind of improved embodiment, described the first cylinder 1 also includes the first cylinder block 12, be arranged on the first spring 13 in the first cylinder block 12, the first aeroscopic plate 14, the first connecting plate 15 and the first end cap 16, one end of the first spring 13 is arranged on first end cap 16 of the first cylinder block 12 away from final controlling element 3, the other end of the first spring 13 connects first piston 11, the first connecting plate 15 is arranged on the other end of the first relative the first end cap 16 of cylinder block 12, be provided with the first suction port 15a on the first connecting plate 15, the first aeroscopic plate 14 is fixedly installed on the first cylinder block 12 between the first connecting plate 15 and first piston 11, the first aeroscopic plate 14 is provided with the second suction port 14a, a plurality of the first air outlet 14b, the first buffering air outlet 14c, the first matching hole 14d and the second matching hole 14e, the second suction port 14a is arranged on the first aeroscopic plate 14 1 sides and communicates with the first matching hole 14d, described the first buffering air outlet 14c is arranged on the inner chamber that is communicated with the second suction port 14a and the first cylinder block 12 on the first aeroscopic plate 14, a plurality of the first air outlet 14b are radial and evenly distribute on the first aeroscopic plate 14 circumference and communicate with the second matching hole 14e, the second matching hole 14e respectively with the first matching hole 14d, the first suction port 15a is connected, be provided with the first packed-piston 140 that matches with the second matching hole 14e in the second matching hole 14e, be provided with the first seal shaft 11a that matches with the first matching hole 14d on first piston 11.
as a kind of improved embodiment, described the second cylinder 2 also includes the second cylinder block 22, the second aeroscopic plate 23 and the second connecting plate 24, the second connecting plate 24 is arranged on the distal portion of the second cylinder block 22 relative piston rods 4, be provided with the 3rd suction port 24a on the second connecting plate 24, the second aeroscopic plate 23 is fixedly installed on the second cylinder block 22 between the second connecting plate 24 and the second piston 21, the second aeroscopic plate 23 is provided with the 4th suction port 23a, a plurality of the second air outlet 23b, the second buffering air outlet 23c, the 3rd matching hole 23d and the 4th matching hole 23e, the 4th suction port 23a is arranged on the second aeroscopic plate 23 1 sides and communicates with the 3rd matching hole 23d, the second buffering air outlet 23c is arranged on the inner chamber that is communicated with the 4th suction port 23a and the second cylinder block 22 on the second aeroscopic plate 23, a plurality of the second air outlet 23b are radial and evenly distribute on the second aeroscopic plate 23 circumference and communicate with the 4th matching hole 23e, the 4th matching hole 23e respectively with the 3rd matching hole 23d, the 3rd suction port 23a is connected, be provided with the second packed-piston 230 that matches with the 4th matching hole 23e in the 4th matching hole 23e, be provided with the second seal shaft 21a that matches with the 3rd matching hole 23d on the second piston 21.
As a kind of improved embodiment, also include the first caging bolt 5 and the second caging bolt 6, the first caging bolts 5 are arranged on the first end cap 16 of the first cylinder block 12, the second caging bolt 6 is arranged on the second connecting plate 24.
As a kind of improved embodiment, be provided with the first row gas port on described the first end cap 16.
As a kind of improved embodiment, the other end of described the second relative the second connecting plate 24 of cylinder block 22 is provided with on the second end cap 25, the second end caps 25 and is provided with the second row gas port.
The utility model divides three working staties, air inlet opening state, exhaust running state, closed condition; Because the working method of the first cylinder 1 and the second cylinder 2 is identical with process, the just explanation as an example of the first cylinder 1 example:
Air inlet opening state: the second suction port 14a air inlet on the first suction port 15a on the first connecting plate 15 and the first aeroscopic plate 14, the first suction port 15a promotes to be positioned at the first packed-piston 140 of the second matching hole 14e, the path that the first packed-piston 140 withstands the first matching hole 14d and a plurality of the first air outlet 14b can't spill from a plurality of the first air outlet 14b gas, because the sectional area of the second matching hole 14e is greater than the first matching hole 14d, in the situation of gas, the first packed-piston 140 can be held down so both sides are leading to; First piston 11 is pushed to left movement and compresses the first spring 13, and the gas in first piston 11 left sides is discharged from the first row gas port, is propped up when first piston 11 moves to the first caging bolt 5; First piston 11 links with piston rod 4 simultaneously, and shift fork 31 is driven by piston rod 4 and moves to leftmost side opening executer 3.
The exhaust running state: when receiving trouble signal, stop air inlet, promote first piston 11 by the elastic force of the first spring 13 and move right, the first packed-piston 140 is also promoted to the right, and gas can be discharged fast from a plurality of the first air outlet 14b; When first piston 11 moves to the first aeroscopic plate 14 soon, the first seal shaft 11a on first piston 11 coordinates with the first matching hole 14d on the first aeroscopic plate 14 passage of blocking the first cylinder 1 cavity and a plurality of the first air outlet 14b, gas can only be discharged from the first buffering air outlet 14c slowly, make last exhaust process slack-off, reduced the wearing and tearing between first piston 11 and the first aeroscopic plate 14, increased the service life.
Closed condition: complete when the exhaust running state, first piston 11 drives piston rod 4 makes shift fork 31 move to rightmost, closes final controlling element 3; The second piston 21 is propped up by the second caging bolt 6.
Claims (6)
1. large bore valves cushions pneumatic actuator with the quick closing valve band, it is characterized in that: comprise the first cylinder (1), the second cylinder (2) and final controlling element (3), described the first cylinder (1) and the second cylinder (2) are arranged on the both sides of final controlling element (3), described the first cylinder (1) includes first piston (11), described the second cylinder (2) includes the second piston (21), described final controlling element (3) includes shift fork (31), described first piston (11) and the second piston (21) interconnect setting by a piston rod (4), described shift fork (31) is connected to the middle part of piston rod (4) and links with piston rod (4), when described the first cylinder (1) and the second cylinder (2) air inlet, first piston (11) and the second piston (21) are movable in the first cylinder (1) and the second cylinder (2) and link with piston rod (4) respectively, piston rod (4) drives shift fork (31) activity and opens final controlling element (3), when described the first cylinder (1) and the second cylinder (2) exhaust, first piston (11) and the second piston (21) be reverse activity in the first cylinder (1) and the second cylinder (2) respectively, and piston rod (4) drives shift fork (31) reverse activity and closes final controlling element (3).
2. large bore valves according to claim 1 cushions pneumatic actuator with the quick closing valve band, it is characterized in that described the first cylinder (1) also includes the first cylinder block (12), be arranged on the first spring (13) in the first cylinder block (12), the first aeroscopic plate (14), the first connecting plate (15) and the first end cap (16), one end of described the first spring (13) is arranged on first end cap (16) of the first cylinder block (12) away from final controlling element (3), the other end of described the first spring (13) connects first piston (11), described the first connecting plate (15) is arranged on the other end of relative the first end cap of the first cylinder block (12) (16), be provided with the first suction port (15a) on described the first connecting plate (15), described the first aeroscopic plate (14) is fixedly installed on the first cylinder block (12) between the first connecting plate (15) and first piston (11), described the first aeroscopic plate (14) is provided with the second suction port (14a), a plurality of the first air outlets (14b), first cushions air outlet (14c), the first matching hole (14d) and the second matching hole (14e), described the second suction port (14a) is arranged on the first aeroscopic plate (14) one sides and communicates with the first matching hole (14d), described the first buffering air outlet (14c) is arranged on the upper inner chamber that is communicated with the second suction port (14a) and the first cylinder block (12) of the first aeroscopic plate (14), described a plurality of the first air outlets (14b) are radial and evenly distribute on the first aeroscopic plate (14) circumference and communicate with the second matching hole (14e), described the second matching hole (14e) respectively with the first matching hole (14d), the first suction port (15a) is connected, be provided with the first packed-piston (140) that matches with the second matching hole (14e) in described the second matching hole (14e), be provided with the first seal shaft (11a) that matches with the first matching hole (14d) on described first piston (11).
3. large bore valves according to claim 2 cushions pneumatic actuator with the quick closing valve band, it is characterized in that described the second cylinder (2) also includes the second cylinder block (22), the second aeroscopic plate (23) and the second connecting plate (24), described the second connecting plate (24) is arranged on the second cylinder block (22) distal portion of piston rod (4) relatively, be provided with the 3rd suction port (24a) on described the second connecting plate (24), described the second aeroscopic plate (23) is fixedly installed on the second cylinder block (22) between the second connecting plate (24) and the second piston (21), described the second aeroscopic plate (23) is provided with the 4th suction port (23a), a plurality of the second air outlets (23b), second cushions air outlet (23c), the 3rd matching hole (23d) and the 4th matching hole (23e), described the 4th suction port (23a) is arranged on the second aeroscopic plate (23) one sides and communicates with the 3rd matching hole (23d), described the second buffering air outlet (23c) is arranged on the upper inner chamber that is communicated with the 4th suction port (23a) and the second cylinder block (22) of the second aeroscopic plate (23), described a plurality of the second air outlets (23b) are radial and evenly distribute on the second aeroscopic plate (23) circumference and communicate with the 4th matching hole (23e), described the 4th matching hole (23e) respectively with the 3rd matching hole (23d), the 3rd suction port (23a) is connected, be provided with the second packed-piston (230) that matches with the 4th matching hole (23e) in described the 4th matching hole (23e), be provided with the second seal shaft (21a) that matches with the 3rd matching hole (23d) on described the second piston (21).
4. large bore valves according to claim 3 cushions pneumatic actuator with the quick closing valve band, it is characterized in that also including the first caging bolt (5) and the second caging bolt (6), described the first caging bolt (5) is arranged on first end cap (16) of the first cylinder block (12), and described the second caging bolt (6) is arranged on the second connecting plate (24).
5. large bore valves according to claim 4 with quick closing valve band buffering pneumatic actuator, is characterized in that being provided with the first row gas port on described the first end cap (16).
6. large bore valves according to claim 5 cushions pneumatic actuator with the quick closing valve band, the other end that it is characterized in that relative the second connecting plate of described the second cylinder block (22) (24) is provided with the second end cap (25), is provided with the second row gas port on described the second end cap (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320307124 CN203272969U (en) | 2013-05-31 | 2013-05-31 | Large-aperture quick-closing and buffering pneumatic actuator for valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320307124 CN203272969U (en) | 2013-05-31 | 2013-05-31 | Large-aperture quick-closing and buffering pneumatic actuator for valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203272969U true CN203272969U (en) | 2013-11-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320307124 Expired - Lifetime CN203272969U (en) | 2013-05-31 | 2013-05-31 | Large-aperture quick-closing and buffering pneumatic actuator for valve |
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| Country | Link |
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| CN (1) | CN203272969U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570229A (en) * | 2016-01-26 | 2016-05-11 | 浙江申仪自动阀门有限公司 | Actuator having buffering effect |
| CN105757050A (en) * | 2016-05-01 | 2016-07-13 | 张述成 | Energy storage type valve cylinder structure with buffer brake function |
| WO2018036496A1 (en) * | 2016-08-25 | 2018-03-01 | 成都迈可森流体控制设备有限公司 | Valve actuator based on gas-fluid composite spring |
| CN108999833A (en) * | 2018-08-31 | 2018-12-14 | 北京万高众业科技股份有限公司 | A kind of air cylinder structure and locomotive |
| CN114198507A (en) * | 2021-12-07 | 2022-03-18 | 浙江石化阀门有限公司 | High-pressure quick pneumatic stop valve |
-
2013
- 2013-05-31 CN CN 201320307124 patent/CN203272969U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105570229A (en) * | 2016-01-26 | 2016-05-11 | 浙江申仪自动阀门有限公司 | Actuator having buffering effect |
| CN105757050A (en) * | 2016-05-01 | 2016-07-13 | 张述成 | Energy storage type valve cylinder structure with buffer brake function |
| WO2018036496A1 (en) * | 2016-08-25 | 2018-03-01 | 成都迈可森流体控制设备有限公司 | Valve actuator based on gas-fluid composite spring |
| CN108999833A (en) * | 2018-08-31 | 2018-12-14 | 北京万高众业科技股份有限公司 | A kind of air cylinder structure and locomotive |
| CN108999833B (en) * | 2018-08-31 | 2024-01-30 | 北京万高众业科技股份有限公司 | Cylinder structure and locomotive |
| CN114198507A (en) * | 2021-12-07 | 2022-03-18 | 浙江石化阀门有限公司 | High-pressure quick pneumatic stop valve |
| CN114198507B (en) * | 2021-12-07 | 2024-04-09 | 浙江石化阀门有限公司 | High-pressure quick pneumatic stop valve |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |