CN215334673U

CN215334673U - Hydraulic safety valve actuator

Info

Publication number: CN215334673U
Application number: CN202121659445.2U
Authority: CN
Inventors: 华峰; 牛壮
Original assignee: Jiangsu Brooke Automation Equipment Co ltd
Current assignee: Dongying Zhengyang Automation Technology Co ltd
Priority date: 2021-07-20
Filing date: 2021-07-20
Publication date: 2021-12-28
Anticipated expiration: 2031-07-20

Abstract

The utility model discloses a hydraulic safety valve actuator which comprises an actuator main body, wherein sealing and assembling mechanisms are respectively installed at the upper end and the lower end of the actuator main body, a hydraulic mechanism is inserted at the top end of the actuator main body and comprises a connecting seat, an executing mechanism is connected at the bottom end of the connecting seat, a valve rod is connected at the bottom end of the executing mechanism, the executing mechanism comprises a spring telescopic rod, a spring telescopic rod is connected at the bottom end of the connecting seat, a pressing seat is connected at the bottom end of the spring telescopic rod, one end, far away from the spring telescopic rod, of the pressing seat is connected with a stress column through a bearing, a threaded sleeve is sleeved on the surface of the stress column, and the bottom end of the stress column is abutted against a pressure pad. The device is provided with the hydraulic mechanism and the executing mechanism, so that the whole tightness of the device is guaranteed, the phenomenon that the liquid flows into the actuator main body to influence the performance of equipment by the hydraulic mechanism is avoided, and the device forms a whole and is convenient to control, maintain and operate.

Description

Hydraulic safety valve actuator

Technical Field

The utility model belongs to the technical field of safety valve actuators, and particularly relates to a hydraulic safety valve actuator.

Background

The actuator is an essential important component in an automatic control system and is used for receiving a control signal sent by a controller and changing the size of a controlled medium so as to maintain a controlled variable at a required value or within a certain range, the safety valve mainly comprises a pneumatic safety valve and a hydraulic safety valve, wherein the hydraulic safety valve mainly comprises a valve part and an execution part, liquid enters from the upper part of the actuator during use and generates pressure to drive a piston to move downwards to drive a valve rod, the valve rod is connected with the valve plate by threads, the valve rod drives the valve plate to move downwards together when moving downwards so as to open the valve, and when the upper actuator discharges water and releases pressure, the valve rod is driven by a spring to move upwards to drive the valve plate to move upwards together so as to close the valve.

Most of hydraulic safety valve actuators on the market operate by independently arranging a hydraulic cylinder above a cylinder cover, so that the volume length of the actuator is too long, and inconvenience in operation control and maintenance is caused, and a targeted improved design is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a hydraulic safety valve actuator which is put into use so as to solve the problem that the volume length of the actuator is too long and the operation, control and maintenance are inconvenient because most of the existing hydraulic safety valve actuators in the market in the background technology are operated by independently arranging a hydraulic cylinder above a cylinder cover.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a hydraulic safety valve actuator, includes the executor main part, sealed equipment mechanism is all installed at the upper and lower both ends of executor main part, the top of executor main part is inserted and is equipped with hydraulic pressure mechanism, hydraulic pressure mechanism includes the connecting seat, and the bottom of connecting seat is connected with actuating mechanism, actuating mechanism's bottom is connected with the valve rod, actuating mechanism includes the spring telescopic link, the bottom of connecting seat is connected with the spring telescopic link, and the bottom of spring telescopic link is connected with presses the seat, the one end that the spring telescopic link was kept away from to the pressure seat is connected with the stress column through the bearing, and the surface cover of stress column is equipped with the swivel nut, the bottom and the pressure pad of stress column are inconsistent.

Preferably, the surface of the pressure seat is provided with a sliding ball, and the pressure seat and the actuator body form a sliding connection.

Preferably, the surface of the stress column is provided with an external thread, the thread is matched with the internal thread on the surface of the inner wall of the threaded sleeve, and the stress column is in threaded connection with the threaded sleeve.

Preferably, the sealed equipment mechanism includes the flange, the top fixedly connected with flange of executor main part, and the surface of flange is inserted and is equipped with the bolt, the inside laminating of flange has the protection pad, the top of executor main part is inserted and is equipped with the inlet, and the junction of inlet and executor main part is provided with sealed the pad.

Preferably, the hydraulic mechanism includes the piston, the bottom and the piston of inlet are inconsistent, and the piston is kept away from the one end of connecting seat and is inserted and be equipped with the piston rod, the surface cover of piston rod is equipped with powerful spring, the one end fixedly connected with connecting seat that the piston was kept away from to the piston rod.

Preferably, the inner wall surface of the actuator main body is provided with an annular chute, the liquid inlet is circular, and the liquid inlet and the actuator main body form a sliding connection.

The utility model has the technical effects and advantages that: the device is through being provided with hydraulic pressure mechanism and actuating mechanism, be favorable to having guaranteed the holistic leakproofness of device, avoid hydraulic pressure mechanism to have liquid to flow into the inside equipment performance that influences of executor main part, during safe pressure, balance off some pressure with hydraulic pressure mechanism and actuating mechanism's partly spring force, when system pressure is higher than the settlement pressure, the balance of previous power is destroyed, under system pressure passes through hydraulic pressure mechanism and actuating mechanism's effect, the valve rod motion, open the pressure release with the valve, the device forms a whole, be convenient for control and maintenance operation.

Drawings

FIG. 1 is a schematic sectional elevation view of the structure of the present invention;

FIG. 2 is a schematic side view of the structure of the present invention;

FIG. 3 is a schematic top view of the piston and connecting seat structure of the present invention.

In the figure: 1. an actuator body; 2. a sealing assembly mechanism; 21. a flange; 22. a bolt; 23. a protective pad; 3. a hydraulic mechanism; 31. a piston; 32. a piston rod; 33. a strong spring; 34. a connecting seat; 4. an actuator; 41. a spring telescopic rod; 42. pressing a base; 43. a stress column; 44. a threaded sleeve; 45. a pressure pad; 5. a valve stem.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a hydraulic safety valve actuator as shown in fig. 1-3, which comprises an actuator main body 1, wherein the upper end and the lower end of the actuator main body 1 are both provided with a sealing assembly mechanism 2, a hydraulic mechanism 3 is inserted at the top end of the actuator main body 1, the hydraulic mechanism 3 comprises a connecting seat 34, the bottom end of the connecting seat 34 is connected with an actuating mechanism 4, the bottom end of the actuating mechanism 4 is connected with a valve rod 5, the actuating mechanism 4 comprises a spring telescopic rod 41, the bottom end of the connecting seat 34 is connected with the spring telescopic rod 41, the bottom end of the spring telescopic rod 41 is connected with a pressing seat 42, one end of the pressing seat 42, which is far away from the spring telescopic rod 41, is connected with a stress column 43 through a bearing, the surface of the stress column 43 is sleeved with a threaded sleeve 44, and the bottom end of the stress column 43 is abutted against a pressure pad 45.

When the pressure-balancing actuator is used, when the pressure is safe, a part of the pressure is balanced by using a part of the spring force of the hydraulic mechanism 3 and the actuator 4, when the system pressure is higher than the set pressure, the balance of the previous force is broken, the valve rod 5 moves under the action of the hydraulic mechanism 3 and the actuator 4 to open and release the valve, the hydraulic mechanism 3 is stressed downwards, the spring expansion rod 41 balances a part of the pressure by the self elasticity, when the limit is reached, the pressure seat 42 is driven downwards, the pressure seat 42 is in sliding connection with the actuator main body 1 through the sliding ball to facilitate the force transmission, the pressure seat 42 transmits the force to the stress column 43, the stress column 43 is in threaded connection with the threaded sleeve 44 to rotate downwards in the threaded sleeve 44 to drive the valve rod 5 to move to open and release the valve, when the pressure is proper, the valve rod 5 is pulled back to the original position through the elasticity of the spring expansion rod 41 and the hydraulic mechanism 3, the valve is closed.

Furthermore, the surface of the pressure seat 42 is provided with a sliding ball, the pressure seat 42 and the actuator main body 1 form a sliding connection, which is beneficial to downward stress of the hydraulic mechanism 3, the spring telescopic rod 41 balances a part of pressure through self elasticity, when reaching a limit, the pressure seat 42 is driven to be downward, the pressure seat 42 and the actuator main body 1 form a sliding connection through the sliding ball, and the stress is conveniently transmitted to the stress column 43.

Further, the surface of stress column 43 is provided with the external screw thread, and this screw thread and swivel nut 44 inner wall surface internal thread looks adaptation, stress column 43 constitutes threaded connection with swivel nut 44, be favorable to pressing seat 42 to convey the power for stress column 43, stress column 43 atress constitutes threaded connection through surperficial external screw thread and swivel nut 44 inner wall surface internal thread looks adaptation and swivel nut 44, the inside atress at swivel nut 44 rotates downwards to drive valve rod 5 motion and open the pressure release with the valve.

Further, sealed equipment mechanism 2 includes flange 21, the top fixedly connected with flange 21 of executor main part 1, and the surface of flange 21 is inserted and is equipped with bolt 22, the inside laminating of flange 21 has protection pad 23, the top of executor main part 1 is inserted and is equipped with inlet 24, and inlet 24 is provided with sealed the pad with the junction of executor main part 1, sealed equipment mechanism 2 is whole to have further guaranteed sealed sealing performance of sealed equipment mechanism 2, the life of sealed equipment mechanism 2 has been prolonged, cost of maintenance has been reduced.

Further, hydraulic pressure mechanism 3 includes piston 31, the bottom of inlet 24 is inconsistent with piston 31, and piston 31 is kept away from the one end of connecting seat 34 and is inserted and be equipped with piston rod 32, the surface cover of piston rod 32 is equipped with powerful spring 33, the one end fixedly connected with connecting seat 34 that piston rod 32 kept away from piston 31, be favorable to liquid to exert pressure to piston 31 through inlet 24, piston 31 atress moves down on the surface of piston rod 32, powerful spring 33 is its balanced partial pressure through self elasticity, when powerful spring 33 reachs the limit, connecting seat 34 atress conveys power for spring telescopic link 41 downwards.

Further, the inner wall surface of executor main part 1 is provided with annular spout, and inlet 24 is circular, and sliding connection is constituteed with executor main part 1 to inlet 24, when being favorable to powerful spring 33 to reach the limit, and connecting seat 34 conveys the power downwards for actuating mechanism 4 through the sliding connection with executor main part 1, has guaranteed sealed equipment mechanism 2's leakproofness simultaneously, avoids the operating position of liquid inflow actuating mechanism 4 to influence equipment performance.

Claims

1. The utility model provides a relief valve executor surges, includes executor main part (1), sealed equipment mechanism (2) are all installed at the upper and lower both ends of executor main part (1), hydraulic pressure mechanism (3) are inserted on the top of executor main part (1), hydraulic pressure mechanism (3) are including connecting seat (34), and the bottom of connecting seat (34) is connected with actuating mechanism (4), the bottom of actuating mechanism (4) is connected with valve rod (5), its characterized in that: actuating mechanism (4) include spring telescopic link (41), the bottom of connecting seat (34) is connected with spring telescopic link (41), and the bottom of spring telescopic link (41) is connected with and presses seat (42), the one end of pressing seat (42) to keep away from spring telescopic link (41) is connected with stress column (43) through the bearing, and the surface cover of stress column (43) is equipped with swivel nut (44), the bottom and the pressure pad (45) of stress column (43) are inconsistent.

2. The hydraulic relief valve actuator of claim 1, wherein: the surface of the pressing seat (42) is provided with a sliding ball, and the pressing seat (42) and the actuator main body (1) form sliding connection.

3. The hydraulic relief valve actuator of claim 1, wherein: the surface of the stress column (43) is provided with an external thread, the thread is matched with the internal thread on the inner wall surface of the threaded sleeve (44), and the stress column (43) and the threaded sleeve (44) form threaded connection.

4. The hydraulic relief valve actuator of claim 1, wherein: the sealing and assembling mechanism (2) comprises a flange (21), the top end of the actuator main body (1) is fixedly connected with the flange (21), a bolt (22) is inserted into the surface of the flange (21), a protective pad (23) is attached to the inside of the flange (21), a liquid inlet (24) is inserted into the top end of the actuator main body (1), and a sealing pad is arranged at the joint of the liquid inlet (24) and the actuator main body (1).

5. The hydro-pneumatic relief valve actuator of claim 4, wherein: hydraulic pressure mechanism (3) include piston (31), the bottom and piston (31) of inlet (24) are inconsistent, and piston (31) keep away from the one end of connecting seat (34) and insert and be equipped with piston rod (32), the surface cover of piston rod (32) is equipped with powerful spring (33), the one end fixedly connected with connecting seat (34) of piston (31) are kept away from in piston rod (32).

6. The hydro-pneumatic relief valve actuator of claim 5, wherein: the inner wall surface of executor main part (1) is provided with annular spout, liquid inlet (24) are circular, liquid inlet (24) and executor main part (1) constitution sliding connection.