CN215568223U

CN215568223U - Safety valve for oil field

Info

Publication number: CN215568223U
Application number: CN202121470136.0U
Authority: CN
Inventors: 杨全庆; 李延昭; 王彦磊; 周拓拓; 孙华甫; 张保良; 张海龙; 李长江; 王冠军; 李明栓
Original assignee: Henan Gaoshan Valve Co ltd
Current assignee: Henan Gaoshan Valve Co ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2022-01-18
Anticipated expiration: 2031-06-30

Abstract

The utility model discloses a safety valve for oil field, which comprises a valve body, a valve seat, a valve core, a transition section and a bulge, wherein the bottom end of the valve body is provided with a through hole for medium to pass through, the valve seat is positioned at the top end of the valve body, the middle position of the top end of the valve seat is provided with a first valve passage, the lower end of the first valve passage is provided with a third valve passage, the lower end of the third valve passage is provided with a second valve passage, the second valve passage is communicated with the inner cavity of the valve body, the valve core is positioned in the second valve passage, the transition section is fixed above the valve core, the bulge is fixed above the transition section, the surfaces of the transition section and the valve core are provided with a plurality of groups of diversion grooves for medium to pass through, and the seal assembly is positioned at the bottom ends of the valve seat and the valve core, the utility model can avoid the problem that the valve core completely falls out of the second valve passage to cause subsequent non-reset, thereby make this device more stable, structural design is more reasonable.

Description

Safety valve for oil field

Technical Field

The utility model relates to the technical field of valves, in particular to a safety valve for an oil field.

Background

The safety valve is widely applied to pipelines of non-corrosive media and corrosive media such as water, petroleum, natural gas and steam, and has the advantages of small flow resistance, flexible opening and closing, long service life, safety, reliability, compact structure and the like. The water injection station in the oil field is to the various low-pressure water that water supply system sent or accord with water injection well water quality requirement through handling, becomes the water under high pressure that oil field development needs through the water pump pressurization, sends the water injection main line respectively through high-pressure valves, sends to the water injection well through the water distribution room again, pours into the oil reservoir into, therefore the pressure that water injection pipeline often bore is high, for guaranteeing pipeline safety, consequently can be equipped with the relief valve.

When current relief valve was opening, when medium pressure was too big, the medium washed away the case easily to lead to the case to produce easily and rock, stability is relatively poor, if the case is washed away when leading to its position to take place the skew, the case can not be fine resets, and inconvenient use provides a relief valve for the oil field to this problem now.

SUMMERY OF THE UTILITY MODEL

The present invention is directed to a safety valve for oil field to solve the above problems of the related art.

In order to achieve the purpose, the utility model provides the following technical scheme:

a kind of oil field uses the relief valve, including the valve block, the bottom of the said valve block has through holes convenient for medium to pass through, and the said through hole communicates with cavity of the said valve block, also include;

the valve seat is positioned at the top end of the valve body, a first valve passage is arranged in the middle of the top end of the valve seat, a third valve passage is arranged at the lower end of the first valve passage, a second valve passage is arranged at the lower end of the third valve passage, and the second valve passage is communicated with the inner cavity of the valve body;

the valve core is positioned in the second valve passage, a transition section is fixed above the valve core, a bulge is fixed above the transition section, and a plurality of groups of guide grooves convenient for a medium to pass through are arranged on the surfaces of the transition section and the valve core;

the sealing assembly is used for increasing the sealing between the valve seat and the valve core, and the sealing assembly is positioned at the bottom ends of the valve seat and the valve core.

As a further scheme of the utility model: the valve core is arranged in the second valve channel and is in sliding connection with the second valve channel.

As a further scheme of the utility model: the sealing assembly comprises a sealing frame fixed at the bottom end of the valve core, a second sealing plug is arranged on the surface, located on the valve core, of the upper portion of the sealing frame, a sealing opening matched with the second sealing plug is formed in the middle of the bottom end of the valve seat, a first sealing plug is arranged on the surface, located on the valve core, of the upper portion of the second sealing plug, and the first sealing plug is located inside the second valve channel.

As a further scheme of the utility model: the upper surface of the sealing frame is provided with an annular sealing groove, and the lower surface of the valve seat is fixed with an annular bulge matched with the annular sealing groove.

As a further scheme of the utility model: the valve body is internally provided with a spring, the upper end of the spring is fixedly connected with the sealing frame, and the lower end of the spring is fixedly connected with the inner wall of the valve body.

As a further scheme of the utility model: the multiple groups of flow guide grooves are distributed in an annular array by taking the central axis of the valve core as an axis.

As a still further scheme of the utility model: the bottom mounting of valve body has the installation department of being convenient for connecting tube, the intermediate position of installation department is equipped with the opening, just the opening with the through-hole intercommunication.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the guide groove is arranged, so that after the valve core moves a distance in the direction away from the valve seat, the valve core can be communicated with the pressure relief channel through the guide groove without completely withdrawing from the second valve passage, and the problem that the valve core completely escapes from the second valve passage to cause subsequent non-resetting is avoided, so that the device is more stable and has a more reasonable structural design.

According to the utility model, the sealing assembly is arranged, the sealing between the valve core and the second valve channel can be increased through the first sealing plug, the sealing between the valve core and the valve seat can be further increased through the second sealing plug, and the sealing performance between the valve seat and the sealing frame can be increased through the annular sealing groove and the annular bulge, so that the sealing performance of the safety valve is effectively ensured, and the use safety is further ensured.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a schematic view of the internal structure of the valve body according to the present invention.

Fig. 3 is a schematic view of the structure of the valve seat of the present invention.

Fig. 4 is a schematic structural diagram of the valve core in the utility model.

Wherein: 1. a valve body; 2. a through hole; 3. an installation part; 4. a spring; 5. a valve seat; 6. a first valve passage; 7. a third valve passage; 8. a second valve passage; 9. a valve core; 10. a protrusion; 11. a transition section; 12. a diversion trench; 13. a seal holder; 14. an annular seal groove; 15. an annular projection; 16. sealing the opening; 17. a first sealing plug; 18. a second sealing plug.

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.

Example 1

Referring to fig. 1-4, in an embodiment of the present invention, a safety valve for an oil field includes a valve body 1, a through hole 2 for allowing a medium to pass through is disposed at a bottom end of the valve body 1, and the through hole 2 is communicated with an inner cavity of the valve body 1;

the valve seat 5 is positioned at the top end of the valve body 1, a first valve passage 6 is arranged in the middle position of the top end of the valve seat 5, a third valve passage 7 is arranged at the lower end of the first valve passage 6, a second valve passage 8 is arranged at the lower end of the third valve passage 7, the second valve passage 8 is communicated with an inner cavity of the valve body 1, and the first valve passage 6, the third valve passage 7 and the second valve passage 8 are communicated with the inside of the valve body 1, so that a medium can conveniently pass through;

the valve core 9 is positioned inside the second valve passage 8 and used for closing the second valve passage 8, a transition section 11 is fixed above the valve core 9, the transition end 11 realizes smooth transition from the valve core 9 to a protrusion 10, the protrusion 10 is fixed above the transition section 11, a plurality of groups of guide grooves 12 convenient for a medium to pass through are arranged on the surfaces of the transition section 11 and the valve core 9, and the guide grooves 12 are arranged so that the valve core 9 can realize the conduction of a pressure relief channel through the guide grooves 12 without completely withdrawing the second valve passage 8 after the valve core 9 moves for a certain distance in the direction away from the valve seat 5, thereby avoiding the problem that the valve core 9 completely escapes from the second valve passage 8 and cannot be subsequently reset;

the sealing assembly is used for increasing the sealing between the valve seat 5 and the valve core 9, effectively ensures the sealing performance of the safety valve and further ensures the use safety, and is positioned at the bottom ends of the valve seat 5 and the valve core 9.

The protrusion 10 is located inside the first valve passage 6, the surface of the first valve passage 6 is pressed against the inner wall of the protrusion 10, the sealing between the protrusion 10 and the first valve passage 6 can be increased, the transition section 11 is located inside the third valve passage 7, the transition section 11 is matched with the third valve passage 7, the valve element 9 is located inside the second valve passage 8, and the valve element 9 is slidably connected with the second valve passage 8, so that the valve element 9 can slide inside the second valve passage 8.

The sealing assembly comprises a sealing frame 13 fixed at the bottom end of the valve core 9, a second sealing plug 18 is arranged on the surface, located on the valve core 9, of the sealing frame 13, a sealing port 16 matched with the second sealing plug 18 is arranged in the middle of the bottom end of the valve seat 5, a first sealing plug 17 is arranged on the surface, located on the valve core 9, of the second sealing plug 18, the first sealing plug 17 is located inside the second valve passage 8, sealing between the valve core 9 and the second valve passage 8 can be increased through the first sealing plug 17, sealing between the valve core 9 and the valve seat 5 can be further increased through the second sealing plug 18, the sealing performance of the safety valve is effectively guaranteed, and use safety is further guaranteed.

The inside of valve body 1 is equipped with spring 4, the upper end of spring 4 with seal carrier 13 fixed connection, the lower extreme of spring 4 with the inner wall fixed connection of valve body 1, after the pressure release and during pressure recovery normal condition, spring 4 can promote the valve core 9 and reset and close the second valve way 8 on the disk seat 5, satisfies the user demand of next pressure release, and structural design is more reasonable.

The groups of diversion trenches 12 are distributed in an annular array by taking the central axis of the valve core 9 as the axis, thereby ensuring that the diversion trenches 12 can be uniformly distributed.

The bottom mounting of valve body 1 has the installation department 3 of the connecting tube of being convenient for, the intermediate position of installation department 3 is equipped with the opening, just the opening with through-hole 2 intercommunication is convenient for device and pipe connection through installation department 3.

Example 2

Referring to fig. 1-4, the difference from embodiment 1 is: the upper surface of seal carrier 13 is equipped with annular seal groove 14, the lower surface of disk seat 5 is fixed with annular bulge 15 with annular seal groove 14 assorted, and annular seal groove 14 and annular bulge 15's setting can increase the leakproofness between disk seat 5 and the seal carrier 13, and the effectual sealing performance who guarantees the relief valve, and then has guaranteed safe in utilizationly.

The working principle of the utility model is as follows:

when the safety valve is used, the device is communicated with a pipeline through the mounting part 3, when the safety valve is opened, the valve core 9 is pressed to compress the spring 13, so that the valve core 9 is far away from the valve seat 5, the opening of a valve release channel is realized, the automatic pressure release is realized, under the action of the diversion trench 12, after the valve core 9 moves a certain distance towards the direction far away from the valve seat 5, the valve core 9 can realize the conduction of the pressure release channel through the diversion trench 12 without completely withdrawing from the second valve channel 8, the problem that the valve core 9 completely escapes from the second valve channel 8 to cause subsequent non-resetting is avoided, so that the device is more stable and convenient to use, when the safety valve is closed, the sealing property between the valve core 9 and the second valve channel 8 can be increased through the first sealing plug 17, the sealing between the valve core 9 and the valve seat 5 can be further increased through the second sealing plug 18, and the annular sealing groove 14 and the annular bulge 15 are arranged, can increase the leakproofness between disk seat 5 and the seal frame 13, the sealing performance of effectual assurance relief valve, and then guaranteed safety in utilization.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof.

Claims

1. The safety valve for the oil field comprises a valve body (1), wherein a through hole (2) facilitating the medium to pass through is formed in the bottom end of the valve body (1), and the through hole (2) is communicated with an inner cavity of the valve body (1);

the valve seat (5) is positioned at the top end of the valve body (1), a first valve channel (6) is arranged in the middle position of the top end of the valve seat (5), a third valve channel (7) is arranged at the lower end of the first valve channel (6), a second valve channel (8) is arranged at the lower end of the third valve channel (7), and the second valve channel (8) is communicated with the inner cavity of the valve body (1);

the valve core (9) is positioned inside the second valve channel (8), a transition section (11) is fixed above the valve core (9), a bulge (10) is fixed above the transition section (11), and a plurality of groups of guide grooves (12) which are convenient for a medium to pass through are formed in the surfaces of the transition section (11) and the valve core (9);

the sealing assembly is positioned at the bottom ends of the valve seat (5) and the valve core (9).

2. An oilfield safety valve according to claim 1, wherein the protrusion (10) is located inside the first valve passage (6), the surface of the first valve passage (6) presses against the inner wall of the protrusion (10), the transition section (11) is located inside the third valve passage (7), the transition section (11) is matched with the third valve passage (7), the valve element (9) is located inside the second valve passage (8), and the valve element (9) is connected with the second valve passage (8) in a sliding manner.

3. An oilfield safety valve according to claim 1, wherein the sealing assembly comprises a sealing frame (13) fixed at the bottom end of the spool (9), a second sealing plug (18) is arranged above the sealing frame (13) and on the surface of the spool (9), a sealing opening (16) matched with the second sealing plug (18) is arranged at the middle position of the bottom end of the valve seat (5), a first sealing plug (17) is arranged above the second sealing plug (18) and on the surface of the spool (9), and the first sealing plug (17) is arranged inside the second valve passage (8).

4. An oilfield safety valve according to claim 3, wherein the upper surface of the seal holder (13) is provided with an annular seal groove (14), and the lower surface of the valve seat (5) is fixed with an annular protrusion (15) matched with the annular seal groove (14).

5. An oilfield safety valve according to claim 3, wherein a spring (4) is arranged inside the valve body (1), the upper end of the spring (4) is fixedly connected with the sealing frame (13), and the lower end of the spring (4) is fixedly connected with the inner wall of the valve body (1).

6. The oilfield safety valve according to claim 1, wherein the groups of the guide grooves (12) are distributed in an annular array around a central axis of the valve core (9).

7. An oilfield safety valve according to claim 1, wherein a mounting part (3) for facilitating connection of a pipeline is fixed to the bottom end of the valve body (1), an opening is formed in the middle of the mounting part (3), and the opening is communicated with the through hole (2).