CN216479129U

CN216479129U - Pilot operated safety valve for protecting pressure container

Info

Publication number: CN216479129U
Application number: CN202123241686.8U
Authority: CN
Inventors: 胡庆锋; 陈剑; 李莎; 羊映; 杨兴林; 王勇; 杨长青; 严飞; 罗川
Original assignee: Leshan Qianyan Oil And Gas Equipment Manufacturing Co ltd
Current assignee: Leshan Qianyan Oil And Gas Equipment Manufacturing Co ltd
Priority date: 2021-12-22
Filing date: 2021-12-22
Publication date: 2022-05-10
Anticipated expiration: 2031-12-22

Abstract

The utility model provides a guide's formula relief valve for protecting pressure vessel, include: the main valve body, the interior roof of the main valve body is fixed to be inlayed and is had a piston section of thick bamboo, the drip mouth has been seted up to the upper surface of a piston section of thick bamboo, the interior roof fixedly connected with pressure spring of a piston section of thick bamboo, the inside of a piston section of thick bamboo is equipped with sealed piston, the seal mouth has been seted up to the inner wall of the main valve body, the bottom of sealed piston is located the inside of seal mouth, the right side of the main valve body is equipped with the pilot valve, the bottom mounting intercommunication of pilot valve has communicating pipe. This a leading formula relief valve for protecting pressure vessel through the current-limiting plate, adjusting spring, adjusting bolt and the scale that set up, can utilize the current-limiting plate to block the gaseous medium that gets into the pilot valve inside, realizes the slow entering of gaseous medium to through the cooperation with adjusting spring and adjusting bolt, realize the exhaust pressure release of pilot valve, avoid the damage of the inside device of pilot valve, increase the life of relief valve.

Description

Pilot operated safety valve for protecting pressure container

Technical Field

The utility model relates to a relief valve technical field especially relates to a guide's formula relief valve for protecting pressure vessel.

Background

The safety valve is a special valve which is in a normally closed state under the action of external force, when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium pressure in the pipeline or the equipment is prevented from exceeding the specified value by discharging the medium to the outside of the system, the safety valve is mainly applied to boilers, pressure vessels and pipelines, the control pressure does not exceed the specified value, and the safety valve plays an important role in protecting personal safety and equipment operation.

The prior pilot-operated safety valve has a complex structure when in use and is inconvenient to install, and meanwhile, a large pressure gas medium directly enters the pilot valve, so that the internal devices of the pilot valve are easily damaged, and the service life of the safety valve is shortened.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a leading formula relief valve for protecting pressure vessel is used for solving current leading formula relief valve structure when using comparatively complicacy, and is convenient inadequately during the installation, and great pressure gas medium directly gets into the inside of pilot valve simultaneously, causes the damage of the inside device of pilot valve easily, reduces relief valve life's problem.

The utility model provides a pair of a guide's formula relief valve for protecting pressure vessel, include: the liquid level meter comprises a main valve body, wherein a piston cylinder is fixedly embedded in the inner top wall of the main valve body, a liquid dropping opening is formed in the upper surface of the piston cylinder, a pressure spring is fixedly connected to the inner top wall of the piston cylinder, a sealing piston is arranged in the piston cylinder, a sealing opening is formed in the inner wall of the main valve body, the bottom end of the sealing piston is located in the sealing opening, a guide valve is arranged on the right side of the main valve body, a communicating pipe is fixedly communicated with the bottom end of the guide valve, the left end of the communicating pipe is fixedly communicated with the right side surface of the main valve body, a pressing plate and an adjusting piston are arranged in the guide valve, a flow limiting plate is fixedly connected to the inner wall of the guide valve, a push rod is fixedly connected to the bottom surface of the adjusting piston, the bottom end of the push rod penetrates through the flow limiting plate and is fixedly connected with a pressure floating ball, and an adjusting spring is fixedly connected to one side surface, close to the pressing plate and the adjusting piston, and a pressure relief opening is formed in the right side surface of the pilot valve.

Preferably, the top of the main valve body has the valve gap through a set of fastening bolt fixed mounting, the inside fixed of valve gap is inlayed and is had the blast pipe, the fixed intercommunication of the left side of pilot valve has the connector, the right-hand member of blast pipe and the fixed intercommunication of the left end of connector, the left side fixedly connected with T type stopper of push rod.

Preferably, an adjusting threaded hole is formed in the upper surface of the pilot valve, an adjusting bolt is connected to the inner wall of the adjusting threaded hole in a threaded mode, a bearing is fixedly embedded in the upper surface of the pressing plate, the bottom end of the adjusting bolt is fixedly connected with the inner ring of the bearing, and a graduated scale is arranged on the front face of the adjusting bolt.

Preferably, the front of the main valve body and the back of the main valve body are fixedly connected with a holding handle, and the front of the main valve body is fixedly connected with a LOGO label.

Preferably, the input end of the main valve body and the output end of the main valve body are fixedly connected with mounting flanges, and a group of mounting holes arranged in an annular mode are formed in one side face, far away from the main valve body, of each mounting flange.

Preferably, the right side surface of the main valve body is fixedly connected with a support frame, the right side surface of the support frame is fixedly connected with the outer surface of the pilot valve, and the inner wall of the main valve body is fixedly connected with a guide plate.

Compared with the prior art, the utility model provides a pair of a guide's formula relief valve for protecting pressure vessel has following beneficial effect:

1. the utility model discloses a mounting flange, mounting hole that set up and the handle that grips can utilize the handle that grips to take up the main valve body is light to through the cooperation with mounting flange and mounting hole, can be convenient install fixedly the main valve body, realize that the relief valve is installed fast.

2. The utility model discloses a guide plate that sets up can carry out the water conservancy diversion to gaseous medium, the gaseous medium of being convenient for enters into the inside of connecting pipe, and then the inside that enters into the pilot valve is discharged through the pressure release mouth, realize pipeline container's exhaust pressure release, through the current-limiting plate that sets up, adjusting spring, adjusting bolt and scale, can utilize the current-limiting plate to block the gaseous medium that gets into the pilot valve inside, realize gaseous medium's slow entering, and through the cooperation with adjusting spring and adjusting bolt, realize the exhaust pressure release of pilot valve, avoid the damage of the inside device of pilot valve, increase the life of relief valve.

Drawings

Fig. 1 is a schematic perspective view of a main valve body of the present invention;

FIG. 2 is a cross-sectional view of a front view of the main valve body of the present invention;

FIG. 3 is a cross-sectional view of a pilot valve of the present invention;

fig. 4 is an enlarged schematic view of a structure shown in fig. 2 according to the present invention.

Reference numbers in the figures: 1. a main valve body; 2. a valve cover; 3. a grip handle; 4. fastening a bolt; 5. an exhaust pipe; 6. adjusting the bolt; 7. a connector; 8. a pilot valve; 9. a support frame; 10. a communicating pipe; 11. LOGO plate; 12. mounting holes; 13. installing a flange; 14. a bearing; 15. an adjusting piston; 16. a T-shaped plug; 17. a push rod; 18. a pressure float ball; 19. a restrictor plate; 20. a pressure relief port; 21. adjusting the spring; 22. pressing a plate; 23. adjusting the threaded hole; 24. a graduated scale; 25. a drip port; 26. a piston cylinder; 27. a pressure spring; 28. a baffle; 29. a sealing piston; 30. and sealing the port.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and embodiments.

Referring to fig. 1, 2, 3 and 4, a pilot operated safety valve for protecting a pressure vessel includes: the main valve body 1, a piston cylinder 26 is fixedly embedded on the inner top wall of the main valve body 1, a drip port 25 is arranged on the upper surface of the piston cylinder 26, a pressure spring 27 is fixedly connected to the inner top wall of the piston cylinder 26, a sealing piston 29 is arranged inside the piston cylinder 26, a sealing port 30 is arranged on the inner wall of the main valve body 1, the bottom end of the sealing piston 29 is positioned inside the sealing port 30, a pilot valve 8 is arranged on the right side of the main valve body 1, a communicating pipe 10 is fixedly communicated with the bottom end of the pilot valve 8, the left end of the communicating pipe 10 is fixedly communicated with the right side surface of the main valve body 1, a pressure plate 22 and an adjusting piston 15 are arranged inside the pilot valve 8, a flow limiting plate 19 is fixedly connected to the inner wall of the pilot valve 8, a push rod 17 is fixedly connected to the bottom surface of the adjusting piston 15, the bottom end of the push rod 17 penetrates through the flow limiting plate 19 and is fixedly connected with a pressure floating ball 18, and an adjusting spring 21 is fixedly connected to the side surface of the pressure plate 22 close to the adjusting piston 15, the right side surface of the pilot valve 8 is provided with a pressure relief opening 20.

In the specific implementation process, the top of the main valve body 1 is fixedly provided with a valve cover 2 through a group of fastening bolts 4, the inside of the valve cover 2 is fixedly embedded with an exhaust pipe 5, the left side surface of a pilot valve 8 is fixedly communicated with a connector 7, the right end of the exhaust pipe 5 is fixedly communicated with the left end of the connector 7, the left side surface of a push rod 17 is fixedly connected with a T-shaped plug 16, the connector 7 is convenient to seal, the safe pressure relief of a pressure relief opening 20 is realized, an adjusting threaded hole 23 is formed in the upper surface of the pilot valve 8, the inner wall of the adjusting threaded hole 23 is in threaded connection with an adjusting bolt 6, the upper surface of a pressing plate 22 is fixedly embedded with a bearing 14, the bottom end of the adjusting bolt 6 is fixedly connected with the inner ring of the bearing 14, a scale 24 is formed in the front surface of the adjusting bolt 6, the adjusting bolt 6 can be rotated to drive the adjusting spring 21 and the adjusting piston 15 to move up and down, the pressure setting of the pilot valve 8 is realized, and the safe pressure relief of the safety valve is convenient.

The front of the main valve body 1 and the back of the main valve body 1 are fixedly connected with a holding handle 3, the front of the main valve body 1 is fixedly connected with a LOGO label 11, an installer can lift the main valve body 1 more easily through the holding handle 3, the safety valve can be installed quickly, the input end of the main valve body 1 and the output end of the main valve body 1 are fixedly connected with mounting flanges 13, one side surface of each mounting flange 13 far away from the main valve body 1 is provided with a group of mounting holes 12 which are arranged in an annular mode, the main valve body 1 and a pipeline container can be installed quickly in a connected mode, the right side surface of the main valve body 1 is fixedly connected with a support frame 9, the right side surface of the support frame 9 is fixedly connected with the outer surface of a pilot valve 8, the inner wall of the main valve body 1 is fixedly connected with a guide plate 28, the gas medium entering the pilot valve 8 can be shunted and buffered, the gas medium can enter slowly, and the damage of devices inside the pilot valve 8 can be avoided, the service life of the safety valve is prolonged.

The utility model provides a pair of a theory of operation for protecting pressure vessel's guide's formula relief valve as follows: when the safety valve is used, firstly, a worker holds the handle 3 to lift the main valve body 1, then the mounting flange 13 is placed on a tracheal pipeline, and the quick connection and mounting are carried out through the mounting hole 12, when the safety valve is in operation, medium gas enters through the bottom of the main valve body 1, when the pressure of the medium gas is smaller than a limit value, the medium gas pushes the sealing piston 29 through the sealing opening 30, then is discharged through the discharge opening of the main valve body 1, simultaneously enters into the inside of the communicating pipe 10, then enters into the inside of the pilot valve 8, and is injected into the inside of the piston cylinder 26 through the connector 7 and the exhaust pipe 5 to act on the upper surface of the sealing piston 29, so that the stable use of the main valve body 1 is realized, when the gas medium is higher than the limit value, the gas medium with higher pressure quickly enters into the inside of the pilot valve 8 through the communicating pipe 10, and the gas medium with stronger impact force is shunted by the flow limiting plate 19, slow down the flow velocity of gaseous medium, higher gaseous medium promotes pressure floater 18 simultaneously, through the cooperation with adjusting spring 21, drive push rod 17 and adjusting piston 15 and upwards remove, drive T type stopper 16 simultaneously and remove, realize the sealed encapsulated situation who relieves pressure release mouth 20 simultaneously of connector 7, gaseous medium passes through pressure release mouth 20 and discharges, realize the safe pressure release to the pipe container, pipeline pressure resumes normal back, will adjust piston 15 and promote downwards through adjusting spring 21's flexible elasticity, realize the sealed of pressure release mouth 20, then make main valve body 1 carry out normal use.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

The above only is the embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structures or equivalent processes of the present invention are used in the specification and the attached drawings, or directly or indirectly applied to other related technical fields, and the same principle is included in the protection scope of the present invention.

Claims

1. A pilot operated safety valve for protecting a pressure vessel, comprising: the main valve body (1), the interior roof of the main valve body (1) is fixed to be inlayed and is had a piston section of thick bamboo (26), the upper surface of piston section of thick bamboo (26) has seted up drip mouth (25), the interior roof fixedly connected with pressure spring (27) of piston section of thick bamboo (26), the inside of piston section of thick bamboo (26) is equipped with sealing piston (29), sealing mouth (30) have been seted up to the inner wall of the main valve body (1), the bottom of sealing piston (29) is located the inside of sealing mouth (30), the right side of the main valve body (1) is equipped with pilot valve (8), the bottom fixed intercommunication of pilot valve (8) has communicating pipe (10), the left end of communicating pipe (10) and the right flank fixed intercommunication of the main valve body (1), the inside of pilot valve (8) is equipped with clamp plate (22) and adjusting piston (15), the inner wall fixed connection of pilot valve (8) has restrictor plate (19), the bottom surface of the adjusting piston (15) is fixedly connected with a push rod (17), the bottom end of the push rod (17) penetrates through a flow limiting plate (19) and is fixedly connected with a pressure floating ball (18), an adjusting spring (21) is fixedly connected to one side surface, close to the adjusting piston (15), of the pressing plate (22), and a pressure relief opening (20) is formed in the right side surface of the pilot valve (8).

2. The pilot operated safety valve for protecting a pressure vessel according to claim 1, wherein a valve cover (2) is fixedly installed at the top end of the main valve body (1) through a set of fastening bolts (4), an exhaust pipe (5) is fixedly embedded in the valve cover (2), a connector (7) is fixedly communicated with the left side surface of the pilot valve (8), the right end of the exhaust pipe (5) is fixedly communicated with the left end of the connector (7), and a T-shaped plug (16) is fixedly connected with the left side surface of the push rod (17).

3. The pilot operated safety valve for protecting a pressure vessel as claimed in claim 1, wherein an adjusting threaded hole (23) is formed in the upper surface of the pilot valve (8), an adjusting bolt (6) is connected to the inner wall of the adjusting threaded hole (23) in a threaded manner, a bearing (14) is fixedly embedded in the upper surface of the pressure plate (22), the bottom end of the adjusting bolt (6) is fixedly connected with the inner ring of the bearing (14), and a graduated scale (24) is formed in the front surface of the adjusting bolt (6).

4. A pilot operated safety valve for protecting a pressure vessel according to claim 1 wherein a grip handle (3) is fixedly attached to both the front of said main valve body (1) and the back of said main valve body (1), said front of said main valve body (1) being fixedly attached with a LOGO (11).

5. The pilot operated safety valve for protecting a pressure vessel according to claim 1, wherein the input end of the main valve body (1) and the output end of the main valve body (1) are fixedly connected with mounting flanges (13), and one side surface of each mounting flange (13) far away from the main valve body (1) is provided with a group of mounting holes (12) which are arranged in a ring shape.

6. A pilot operated safety valve for protecting a pressure vessel according to claim 1, wherein a support frame (9) is fixedly connected to the right side surface of the main valve body (1), the right side surface of the support frame (9) is fixedly connected to the outer surface of the pilot valve (8), and a guide plate (28) is fixedly connected to the inner wall of the main valve body (1).