CN214888885U

CN214888885U - Oil-well rig relief valve case pole seal structure

Info

Publication number: CN214888885U
Application number: CN202121225012.6U
Authority: CN
Inventors: 郭谊民
Original assignee: Nanyang Ruige Industrial Co ltd
Current assignee: Nanyang Ruige Industrial Co ltd
Priority date: 2021-06-02
Filing date: 2021-06-02
Publication date: 2021-11-26
Anticipated expiration: 2031-06-02

Abstract

The utility model discloses an oil-well rig relief valve case pole seal structure, concretely relates to relief valve technical field, which comprises a valve body, the inside cavity of having seted up of valve body, the fixed connecting pipe that is equipped with in valve body top, the activity of connecting pipe top is equipped with the valve gap, the activity of valve gap top is equipped with the adjusting collar, the inside case that is equipped with of valve body, the fixed valve rod that is equipped with in case top, the case bottom is equipped with the mounting panel, swing joint between mounting panel and the case, the fixed rubber seal piece that is equipped with in mounting panel bottom. The utility model discloses a be equipped with the mounting panel bottom the case, the sealed piece of conical rubber of mounting panel bottom and the cavity inner wall contact of valve body, the sealed piece of rubber inserts the annular caulking groove in, the rotating valve rod moves down, and the valve rod promotes the case and drives the sealed piece of rubber and closely laminate with the annular caulking groove, and the sealed piece of rubber has elasticity, and partly extrudees in the annular groove to improve the leakproofness between case and the valve body cavity.

Description

Oil-well rig relief valve case pole seal structure

Technical Field

The utility model belongs to the technical field of the relief valve technique and specifically relates to an oil-well rig relief valve case pole seal structure that says so.

Background

At present, with the rapid development of economic construction in China, equipment project projects with pressure control are more and more. When the equipment is used, the conventional pressure relief device needing to perform pressure relief operation on the equipment generally adopts a safety valve, the safety valve plays a vital role in the process of protecting the equipment, and the safety valve is special because the safety valve only plays a role of opening and closing unlike other valves, and more importantly, plays a role of protecting the equipment. The safety valve is in a normally closed state under the action of external force, and when the pressure of a medium in the equipment or the pipeline continuously rises and exceeds a specified value, the medium is discharged to the outside of the system and the outside of the device to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value. The safety valve is mainly used for boiler, pressure container and pipeline, and can control the pressure in equipment not to exceed specified value, so that it can protect the safety of working personnel and equipment.

When the existing safety valve is used, the valve rod is generally screwed down, the valve rod is attached to the inner cavity of the valve body to be sealed, the sealing performance between the valve core rod inside the valve body and the valve body is low, and the conditions of different pressures are easy to occur.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the embodiment of the utility model provides an oil-well rig relief valve case pole seal structure to solve the problem that appears in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: a sealing structure of a valve core rod of a safety valve of an oil rig comprises a valve body, wherein a cavity is arranged inside the valve body, the top of the valve body is fixedly provided with a connecting pipe, the top of the connecting pipe is movably provided with a valve cover, the top of the valve cover is movably provided with an adjusting sleeve, a valve core is arranged in the valve body, a valve rod is fixedly arranged at the top of the valve core, a mounting plate is arranged at the bottom of the valve core, the mounting plate is movably connected with the valve core, the bottom of the mounting plate is fixedly provided with a rubber sealing block, the section of the rubber sealing block is set to be conical, the inner wall of the bottom of the cavity of the valve body is provided with an annular caulking groove, the bottom of the rubber sealing block is arranged in the annular caulking groove, the bottom surface of the inner wall of the annular caulking groove is provided with an annular groove, the bottom of the rubber sealing block is arranged in the annular groove, the air outlet pipe is fixedly arranged on the outer wall of one side of the valve body, and the air inlet pipe is fixedly arranged on the outer wall of the bottom of the valve body.

In a preferred embodiment, four screws are movably arranged in the mounting plate, four first threaded holes are formed in the bottom surface of the valve core, and the mounting plate is detachably connected with the valve core through the screws and the first threaded holes.

In a preferred embodiment, a through hole is formed in the connecting pipe, a ball bearing is fixedly arranged on the surface of the inner wall of the through hole, an annular rubber sheet is fixedly arranged on the inner wall of the ball bearing, and the annular rubber sheet is in contact with the outer wall of the valve rod.

In a preferred embodiment, the top and the bottom of the valve rod are sleeved with annular plates, the annular plates are connected with the valve rod through ball bearings, a spring is fixedly arranged between the two annular plates, and the spring is sleeved on the outer side of the valve rod.

In a preferred embodiment, the outer wall of the connection pipe is externally threaded, the inner wall of the valve cover is internally threaded, and the valve cover is threadedly coupled to the connection pipe through the internal and external threads.

In a preferred embodiment, the outer wall surface of the valve cover is provided with external threads, the inner wall surface of the adjusting sleeve is provided with internal threads, and the adjusting sleeve is in threaded connection with the valve cover through the internal threads and the external threads.

In a preferred embodiment, the top of the adjusting sleeve is provided with a second threaded hole, the outer wall surface of the valve rod is provided with external threads, the valve rod is in threaded connection with the second threaded hole, and the top end of the valve rod extends to the outside of the top of the adjusting sleeve.

The utility model discloses a technological effect and advantage:

1. the utility model discloses a be equipped with the mounting panel bottom the case, the sealed piece of conical rubber of mounting panel bottom and the cavity inner wall contact of valve body, the sealed piece of rubber inserts the annular caulking groove in, the rotating valve rod moves down, and the valve rod promotes the case and drives the sealed piece of rubber and closely laminate with the annular caulking groove, and the sealed piece of rubber has elasticity, and partly extrudees in the annular groove to improve the leakproofness between case and the valve body cavity.

2. Through being equipped with ball bearing inside the connecting pipe, annular rubber piece and the contact of valve rod outer wall on the ball bearing, annular rubber piece has elasticity and the valve rod outer wall closely laminates, improves the leakproofness between valve rod and the through-hole to further improve the leakproofness between case, valve rod and the valve body, ball bearing can rotate, makes annular rubber piece follow the valve rod and rotates together, reduces the wearing and tearing between annular rubber piece and the valve rod.

Drawings

Fig. 1 is an overall structure front view of the present invention.

Fig. 2 is a cross-sectional view of the overall structure of the present invention.

Fig. 3 is an enlarged view of a portion a of fig. 2 according to the present invention.

Fig. 4 is a front view of the valve core of the present invention.

Fig. 5 is a cross-sectional view of the connecting pipe of the present invention.

The reference signs are: 1. a valve body; 2. a cavity; 3. a connecting pipe; 4. a valve cover; 5. an adjusting sleeve; 6. a valve core; 7. a valve stem; 8. mounting a plate; 9. a rubber sealing block; 10. an annular caulking groove; 11. an annular groove; 12. an air outlet pipe; 13. an air inlet pipe; 14. a screw; 15. a first threaded hole; 16. a through hole; 17. an annular rubber sheet; 18. a ring plate; 19. a spring; 20. and a second threaded hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to the attached drawings 1-5 of the specification, the oil rig safety valve core rod sealing structure of the embodiment comprises a valve body 1, a cavity 2 is formed in the valve body 1, a connecting pipe 3 is fixedly arranged at the top of the valve body 1, a valve cover 4 is movably arranged at the top of the connecting pipe 3, the valve cover 4 is convenient to detach from the connecting pipe 3 and clean the interior of the internal valve cover 4, an adjusting sleeve 5 is movably arranged at the top of the valve cover 4 and is convenient to adjust the elastic force of a spring 19 between two annular plates 18 so as to change the pressure on a valve rod 7, a valve core 6 is arranged in the valve body 1, a valve rod 7 is fixedly arranged at the top of the valve core 6, a mounting plate 8 is arranged at the bottom of the valve core 6, the mounting plate 8 is movably connected with the valve core 6, after long-time use, the mounting plate 8 is convenient to detach from the valve core 6 and replace a rubber sealing block 9, the fixed sealed piece 9 of rubber that is equipped with in mounting panel 8 bottom, the sealed piece 9 cross-section of rubber sets up to conical, annular caulking groove 10 has been seted up to 2 bottom inner walls of cavity of valve body 1, the sealed piece 9 bottom of rubber is established in annular caulking groove 10, annular groove 11 has been seted up to annular caulking groove 10 inner wall bottom surface, the sealed piece 9 bottom of rubber is established in annular groove 11, and the sealed piece 9 of rubber has elasticity, receives behind the thrust of valve rod 7 and case 6, and the bottom of the sealed piece 9 of rubber partly inserts in annular caulking groove 10 and annular groove 11, increases and the leakproofness between the 1 cavity 2 of valve body, the fixed outlet duct 12 that is equipped with of 1 one side outer wall of valve body, the fixed intake pipe 13 that is equipped with of 1 bottom outer wall of valve body.

Further, all the cover of valve rod 7 top and bottom is equipped with crown plate 18, crown plate 18 passes through ball bearing and is connected with valve rod 7, and fixed spring 19 that is equipped with between two crown plates 18, spring 19 cover is established in the valve rod 7 outside, and spring 19 can increase the pressure when rotating valve rod 7.

Further, the surface processing of the outer wall of the connecting pipe 3 has external threads, the surface processing of the inner wall of the valve cover 4 has internal threads, the valve cover 4 is conveniently detached from the connecting pipe 3 through the internal threads and the external threads and is connected with the connecting pipe 3 through the threads, and the interior of the valve cover 4 is cleaned.

Further, the outer wall surface of the valve cover 4 is processed with external threads, the inner wall surface of the adjusting sleeve 5 is processed with internal threads, the adjusting sleeve 5 is in threaded connection with the valve cover 4 through the internal threads and the external threads, the height of the adjusting sleeve 5 on the valve cover 4 is conveniently adjusted, and therefore the pressure of the spring 19 between the two annular plates 18 is changed.

Further, second screw hole 20 has been seted up at adjusting collar 5 top, the outer wall surface machining of valve rod 7 has the external screw thread,

valve rod

7 and 20 threaded connection of second screw hole, the valve rod 7 top extends to the 5 top outsides of adjusting collar, makes valve rod 7 more stable when rotatory.

The implementation scenario is specifically as follows: when the valve is used, the valve rod 7 rotates in the second threaded hole 20 in the adjusting sleeve 5, the valve rod 7 is in threaded connection with the second threaded hole 20, the valve rod 7 slowly moves downwards, the valve rod 7 drives the valve core 6 to move towards the bottom of the cavity 2 of the valve body 1, the rubber sealing block 9 at the bottom of the valve core 6 is in contact with the inner wall of the bottom of the cavity 2 of the valve body 1, the rubber sealing block 9 has elasticity, after being extruded, one part of the rubber sealing block is inserted into the annular caulking groove 10 of the cavity 2, the valve rod 7 is continuously rotated to drive the valve core 6 to move downwards, one part of the bottom of the rubber sealing block 9 is continuously inserted into the annular groove 11 at the bottom of the inner wall of the annular caulking groove 10, so that the rubber sealing block 9 is attached to the cavity 2 more tightly, the sealing effect between the valve core 6 and the cavity 2 is improved, and gas or liquid entering from the air inlet pipe 13 is prevented from leaking out from a gap between the valve core 6 and the inner wall of the cavity 2 of the valve body 1, the influence is equipped with annular rubber piece 17 to the control of flow between the through-hole 16 of valve rod 7 and connecting pipe 3, and annular rubber piece 17 has elasticity, with the outer wall of valve rod 7 firmly paste, from the leakproofness that improves between valve rod 7 and the through-hole 16, plays the effect of leak protection, and spring 19 between two crown plates 18 has elasticity, can support valve rod 7, increases the fastness of valve rod 7 in valve body 1.

Referring to the attached fig. 2 and 5 of the specification, in the sealing structure of the valve core rod of the safety valve of the oil rig according to the embodiment, the connecting pipe 3 is internally provided with the through hole 16, the surface of the inner wall of the through hole 16 is fixedly provided with the ball bearing, the inner wall of the ball bearing is fixedly provided with the annular rubber sheet 17, the annular rubber sheet 17 is in contact with the outer wall of the valve rod 7, and the annular rubber sheet 17 is tightly attached to the outer wall of the valve rod 7, so that the sealing performance between the valve rod 7 and the through hole 16 is improved.

The implementation scenario is specifically as follows: valve rod 7 is when rotatory reciprocating, the outer wall of valve rod 7 and the contact of annular sheet rubber 17 in the through-hole 16, annular sheet rubber 17 has elasticity, consequently with the outer wall of valve rod 7 firmly paste, establish annular sheet rubber 17 on the inner wall of through-hole 16 through using ball bearing, make annular sheet rubber 17 can rotary motion, follow the rotation of valve rod 7 and rotate, reduce the wearing and tearing between annular sheet rubber 17 and the valve rod 7, increase annular sheet rubber 17's life, can prevent effectively that annular sheet rubber 17 from receiving the rotary friction of valve rod 7 for a long time, cause the leakproofness between annular sheet rubber 17 and the valve rod 7 to reduce.

Referring to the attached drawings 2-4 in the specification, in the sealing structure for the valve core rod of the safety valve of the oil rig according to the embodiment, four screws 14 are movably arranged inside the mounting plate 8, four first threaded holes 15 are formed in the bottom surface of the valve core 6, the mounting plate 8 is detachably connected with the valve core 6 through the screws 14 and the first threaded holes 15, and the mounting plate 8 is connected with the valve core 6 through the screws 14, so that the mounting plate 8 can be conveniently detached from the valve core 6 to replace the rubber sealing block 9.

The implementation scenario is specifically as follows: be connected rubber seal block 9 and case 6 through mounting panel 8, after using for a long time, can dismantle four screws 14 on the mounting panel 8 from four first screw holes 15 of case 6 bottom plate, dismantle mounting panel 8 and rubber seal block 9, change rubber seal block 9, prevent to use for a long time the back, rubber seal block 9 wearing and tearing, cause the influence to the leakproofness between case 6 and the 1 cavity 2 of valve body.

The points to be finally explained are: first, in the description of the present application, it should be noted that, unless otherwise specified and limited, the terms "mounted," "connected," and "connected" should be understood broadly, and may be a mechanical connection or an electrical connection, or a communication between two elements, and may be a direct connection, and "upper," "lower," "left," and "right" are only used to indicate a relative positional relationship, and when the absolute position of the object to be described is changed, the relative positional relationship may be changed;

secondly, the method comprises the following steps: in the drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are referred to, and other structures can refer to the common design, and under the condition of no conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

and finally: the above description is only for the preferred embodiment of the present invention and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an oil-well rig relief valve case pole seal structure, includes valve body (1), its characterized in that: the valve is characterized in that a cavity (2) is formed in the valve body (1), a connecting pipe (3) is fixedly arranged at the top of the valve body (1), a valve cover (4) is movably arranged at the top of the connecting pipe (3), an adjusting sleeve (5) is movably arranged at the top of the valve cover (4), a valve core (6) is arranged in the valve body (1), a valve rod (7) is fixedly arranged at the top of the valve core (6), a mounting plate (8) is arranged at the bottom of the valve core (6), the mounting plate (8) is movably connected with the valve core (6), a rubber sealing block (9) is fixedly arranged at the bottom of the mounting plate (8), the cross section of the rubber sealing block (9) is conical, an annular caulking groove (10) is formed in the inner wall at the bottom of the cavity (2) of the valve body (1), the bottom of the rubber sealing block (9) is arranged in the annular caulking groove (10), and an annular groove (11) is formed in the surface at the bottom of the inner wall of the annular caulking groove (10), rubber seal piece (9) bottom is established in annular groove (11), valve body (1) one side outer wall is fixed and is equipped with outlet duct (12), valve body (1) bottom outer wall is fixed and is equipped with intake pipe (13).

2. The oil rig safety valve spool rod sealing structure of claim 1, wherein: the novel valve is characterized in that four screws (14) are movably arranged in the mounting plate (8), four first threaded holes (15) are formed in the surface of the bottom of the valve core (6), and the mounting plate (8) is detachably connected with the valve core (6) through the screws (14) and the first threaded holes (15).

3. The oil rig safety valve spool rod sealing structure of claim 1, wherein: through-hole (16) have been seted up to connecting pipe (3) inside, through-hole (16) inner wall fixed surface is equipped with ball bearing, the fixed annular sheet rubber (17) that is equipped with of ball bearing inner wall, annular sheet rubber (17) contact with valve rod (7) outer wall.

4. The oil rig safety valve spool rod sealing structure of claim 1, wherein: valve rod (7) top and bottom all overlap and are equipped with crown plate (18), crown plate (18) are connected with valve rod (7) through ball bearing, and fixed spring (19) that are equipped with between two crown plates (18), the valve rod (7) outside is established in spring (19) cover.

5. The oil rig safety valve spool rod sealing structure of claim 1, wherein: the connecting pipe (3) outer wall surface finish has the external screw thread, valve gap (4) inner wall surface finish has the internal thread, valve gap (4) are through internal thread and external screw thread and connecting pipe (3) threaded connection.

6. The oil rig safety valve spool rod sealing structure of claim 1, wherein: valve gap (4) outer wall surface machining has the external screw thread, adjusting sleeve (5) inner wall surface machining has the internal thread, adjusting sleeve (5) are through internal thread and external screw thread and valve gap (4) threaded connection.

7. The oil rig safety valve spool rod sealing structure of claim 1, wherein: second screw hole (20) have been seted up at adjusting collar (5) top, valve rod (7) outer wall surface machining has the external screw thread, valve rod (7) and second screw hole (20) threaded connection, valve rod (7) top extends to adjusting collar (5) top outside.