CN114060547A

CN114060547A - Electric control valve for natural gas pipeline

Info

Publication number: CN114060547A
Application number: CN202111355236.3A
Authority: CN
Inventors: 穆莉; 先夏昱; 赵晓刚
Original assignee: Chongqing Jinqiu High Pressure Valve Co ltd
Current assignee: Chongqing Jinqiu High Pressure Valve Co ltd
Priority date: 2021-11-16
Filing date: 2021-11-16
Publication date: 2022-02-18

Abstract

The invention relates to the technical field of electric control valves, in particular to an electric control valve for a natural gas pipeline, which comprises a valve shell, wherein a motor shell and a machine shell are fixedly connected to two sides of the valve shell respectively, the lower end of the valve shell is fixedly connected to the upper end of an inner cover plate, the lower end of the inner cover plate is fixedly connected with a through pipe, the lower end of the through pipe is fixedly connected with a valve seat, a valve core comprises a movable U-shaped plate and a fixed U-shaped plate, the outer walls of two ends of the movable U-shaped plate are connected to the inner walls of two ends of the fixed U-shaped plate in a sliding manner, a buffer assembly comprises a spring, sliding plates are arranged on the inner walls of the fixed U-shaped plate and the movable U-shaped plate, a connecting plate is rotatably connected between the sliding plates, and one side of the sliding plate on the fixed U-shaped plate is provided with the spring, the invention improves the operability of equipment and the accuracy of the control of the valve core, and prolongs the service life and the time of the valve core, the number of times of valve core later-stage overhaul is reduced, and the use cost in the later stage is reduced.

Description

Electric control valve for natural gas pipeline

Technical Field

The invention relates to the technical field of electric control valves, in particular to an electric control valve for a natural gas pipeline.

Background

The electric valve action moment of force is bigger than ordinary valve, and electric valve switch action speed can be adjusted, simple structure, and easy the maintenance can be used to the flow of various types of fluid such as control air, water, steam, various corrosive medium, mud, oil, liquid metal and radioactive medium, has obtained extensive application in the control of the pipeline natural gas transport underneath, is CN201922405019.5 like the application number, a novel electric valve flow control device, including the electric valve body, the fixed inlet tube that is provided with in left side of electric valve body, the fixed outlet pipe that is provided with in right side of electric valve body, the inside fixed surface that advances water pipe is provided with the fixed block, the fixed bearing that is provided with in middle part of fixed block bottom. The utility model discloses a through setting up the round bar, promote the piece, barrier plate and regulating plate, make the round bar drive and promote the piece and rotate, promote the piece and promote the dislocation of taking place between regulating plate and the barrier plate, utilize regulating plate and barrier plate combined action to block the regulation inside the inlet tube, thereby make the flow of electric valve body be convenient for adjust, the availability factor is higher, still through setting up the movable rod, first gear, second gear and dwang, make the meshing that rotates the movable rod and can utilize first gear and second gear drive the dwang and rotate, thereby be convenient for rotate the regulation to the barrier plate and adjust, convenient and fast more.

However, the above solution has the following disadvantages in use: thereby the meshing through first gear and second gear drives the dwang and rotates the state of control case, and then the efficiency that the control natural gas was carried, nevertheless the case still is located the inside of valve when the natural gas is carried, thereby occupied the inside partial volume of valve, consequently, the efficiency that the natural gas was carried can further promote, and when the natural gas is carried at a high speed, inside can produce great pressure, the effort that can last the case, consequently, need carry out frequent maintenance and change to the case, later stage use cost is great.

Disclosure of Invention

Technical problem to be solved

The invention provides an electric control valve for a natural gas pipeline, aiming at the defects that in the prior art, a valve core is still positioned inside a valve when natural gas is conveyed, so that partial volume inside the valve is occupied, the efficiency of conveying the natural gas can be further improved, and when the natural gas is conveyed at a high speed, large pressure can be generated inside the valve core, acting force can be continuously applied to the valve core, so that the valve core needs to be frequently overhauled and replaced, and the later use cost is high.

(II) technical scheme

In order to achieve the purpose, the invention adopts the technical scheme that:

an electric control valve for a natural gas pipeline comprises a valve casing, wherein a motor casing and a casing are fixedly connected to two sides of the valve casing respectively, the lower end of the valve casing is fixedly connected to the upper end of an inner cover plate, a through pipe is fixedly connected to the lower end of the inner cover plate, a valve seat is fixedly connected to the lower end of the through pipe, a valve core lifting assembly is arranged inside the motor casing and connected to a valve core through a connecting rod, the valve core is movably arranged inside the valve seat, a valve core adjusting assembly is arranged inside the casing and comprises an electric push rod, a tooth post, a toothed plate and a slide rod, the connecting rod penetrates through the slide rod in a rotating mode, the connecting rod is located at the upper end of the slide rod and fixedly connected with a tooth post, the tooth post is meshed with the toothed plate, the toothed plate is fixedly connected to an output shaft of the electric push rod, and a buffer assembly is arranged inside the valve core, the case is including activity U template and fixed U template, the both ends outer wall sliding connection of activity U template is on the both ends inner wall of fixed U template, the buffering subassembly is including slide, even board, spring, the inner wall of fixed U template and activity U template all is provided with the slide, relative two it is connected with even board to rotate between the slide, is located fixed U template slide one side is provided with the spring.

Preferably, electric putter fixed connection is on the inner wall of casing, the one end sliding connection of slide bar is on auxiliary support, auxiliary support fixed connection is on the inner wall of valve casing, just auxiliary support's upper end inner wall fixedly connected with infrared inductor.

Preferably, the lower extreme fixedly connected with pivot of connecting rod, the both ends fixedly connected with branch of pivot, pivot and branch activity set up on the spacing groove.

Preferably, the limiting groove is formed in the upper plate, a torsion spring is connected between the upper plate and the connecting rod, the torsion spring is sleeved on the outer wall of the rotating shaft, the lower end of the upper plate is fixedly connected with a fixed U-shaped plate, and the lower end of the upper plate is further connected with a movable U-shaped plate in a sliding mode.

Preferably, the inner wall of the fixed U-shaped plate is fixedly connected with a plurality of sliding supports, each sliding support is connected with a sliding plate in a sliding mode, and a plurality of springs are connected between each corresponding sliding plate and each corresponding sliding support.

Preferably, a limiting spring is fixedly connected between the fixed U-shaped plate and the movable U-shaped plate, and each limiting spring is arranged in the middle of the fixed U-shaped plate.

Preferably, the valve core lifting assembly comprises a worm, a worm wheel, a screw rod and a screw rod sleeve, the worm is fixedly connected to an output shaft of the servo motor, the worm and the worm wheel are matched with each other, the worm wheel is movably arranged in the valve casing, the lower end of the worm wheel is fixedly connected with the screw rod, the screw rod sleeve is sleeved on the screw rod, and one side of the screw rod sleeve is connected to the sliding rod.

Preferably, the upper end of the worm wheel is rotatably connected to the inner wall of the valve housing through an upper connecting shaft, and the end of the worm is rotatably connected to a fixing plate fixedly connected to the inner wall of the valve housing.

Preferably, the outer wall cover of interior apron is equipped with first valve pad and second valve pad, link to each other through the bolt between first valve pad and the second valve pad, just first valve pad and second valve pad still pass through the upper end of apron including bolt fixed connection, the lower extreme of interior apron is provided with the sealing washer, the sealing washer is connected with the connecting rod cooperation.

Preferably, the side of the valve casing is provided with a shaft hole matched with an output shaft of the servo motor, two sides of the valve seat are fixedly connected with valve ports, the upper end of the valve seat is provided with a chute matched with the valve core, the inside of the valve seat is provided with a channel, and the center of the valve seat is also provided with a valve.

Compared with the prior art, the invention has the following beneficial effects:

1. the case is when promoting the same distance, and servo motor need rotate more number of turns to make the regulation case that equipment can be more accurate in the inside state of valve, improved the operability of equipment and the accurate nature of case control.

2. The volume of the valve self when natural gas is conveyed is increased, the natural gas conveying efficiency is improved, the time and the area of contact with the valve core during conveying of a natural gas pipeline are reduced by arranging the valve core in the sliding groove, the service life of the valve core is prolonged, the number of times of later-stage maintenance of the valve core is reduced, and the use cost of the later stage is reduced.

3. And the torsional spring that is equipped with makes the case can rotate the skew while, the turned angle that the spacing groove that is equipped with can restrict the case is great, can cushion the effort that the natural gas led to the fact to it when making case self work, and further the inner structure of case has been strengthened, has improved the practicality of equipment.

Drawings

FIG. 1 is a schematic diagram of an electrically controlled valve for a natural gas pipeline according to the present invention;

fig. 2 is a schematic structural view of the inside of a valve housing of an electrically controlled valve for a natural gas pipeline according to the present invention;

FIG. 3 is a schematic structural diagram of a valve core lifting assembly of an electric control valve for a natural gas pipeline according to the present invention;

FIG. 4 is an enlarged schematic view of the electrically controlled valve for a natural gas pipeline at A in FIG. 3 according to the present invention;

FIG. 5 is an exploded view of an electrically controlled valve for a natural gas pipeline according to the present invention;

FIG. 6 is a schematic diagram of an inner ring of an electrically controlled valve for a natural gas pipeline according to the present invention;

fig. 7 is a schematic structural view of a valve seat of an electrically controlled valve for a natural gas pipeline according to the present invention;

FIG. 8 is a schematic structural view of a connecting rod of an electrically controlled valve for a natural gas pipeline according to the present invention;

fig. 9 is a schematic structural diagram of a valve core of an electric control valve for a natural gas pipeline according to the present invention.

In the figure: 1. a valve housing; 2. a spool adjustment assembly; 201. a tooth post; 202. a toothed plate; 203. a slide bar; 3. a spool lift assembly; 301. a worm; 302. an upper connecting shaft; 303. a screw rod; 304. a screw rod sleeve; 305. a worm gear; 306. a fixing plate; 307. an infrared sensor; 308. an auxiliary support; 4. a buffer assembly; 401. a slide plate; 402. connecting plates; 403. a sliding support; 404. a spring; 405. a limiting spring; 5. a motor housing; 6. a bolt; 7. a valve seat; 8. a valve port; 9. a housing; 10. a first valve pad; 11. a second valve pad; 12. pipe passing; 13. a servo motor; 14. an electric push rod; 15. a connecting rod; 16. a valve core; 17. a shaft hole; 18. an inner cover plate; 19. a seal ring; 20. a channel; 21. a chute; 22. a valve; 23. a rotating shaft; 24. an upper plate; 25. a movable U-shaped plate; 26. fixing the U-shaped plate; 27. a torsion spring; 28. a strut; 29. a limiting groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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.

Examples

As shown in fig. 1 to 9, an electric control valve for a natural gas pipeline includes a valve housing 1, a motor housing 5 and a housing 9 are respectively fixedly connected to two sides of the valve housing 1, a lower end of the valve housing 1 is fixedly connected to an upper end of an inner cover plate 18, a through pipe 12 is fixedly connected to a lower end of the inner cover plate 18, a valve seat 7 is fixedly connected to a lower end of the through pipe 12, a valve core lifting assembly 3 is disposed inside the motor housing 5, the valve core lifting assembly 3 is connected to a valve core 16 through a connecting rod 15, the valve core 16 is movably disposed inside the valve seat 7, a valve core adjusting assembly 2 is disposed inside the housing 9, the valve core adjusting assembly 2 includes an electric push rod 14, a tooth post 201, a tooth plate 202, and a sliding rod 203, the connecting rod 15 rotatably penetrates the sliding rod 203, the upper end of the connecting rod 15 located on the sliding rod 203 is fixedly connected with the tooth post 201, the tooth post 201 is engaged with the tooth plate 202, the tooth plate 202 is fixedly connected to an output shaft of the electric push rod 14, the inside of case 16 is equipped with buffer unit 4, case 16 is including activity U template 25 and fixed U template 26, the both ends outer wall sliding connection of activity U template 25 is on the both ends inner wall of fixed U template 26, buffer unit 4 is including slide 401, even board 402, spring 404, the inner wall of fixed U template 26 and activity U template 25 all is provided with slide 401, it is even board 402 to rotate between two relative slides 401 to be connected with, slide 401 one side that is located on the fixed U template 26 is provided with spring 404.

In this embodiment, the electric push rod 14 is fixedly connected to the inner wall of the housing 9, one end of the sliding rod 203 is slidably connected to the auxiliary support 308, the auxiliary support 308 is fixedly connected to the inner wall of the valve housing 1, and the inner wall of the upper end of the auxiliary support 308 is fixedly connected to the infrared sensor 307.

In this embodiment, the lower end of the connecting rod 15 is fixedly connected with a rotating shaft 23, two ends of the rotating shaft 23 are fixedly connected with a supporting rod 28, and the rotating shaft 23 and the supporting rod 28 are movably arranged on a limiting groove 29.

In this embodiment, the limiting groove 29 is formed on the upper plate 24, a torsion spring 27 is connected between the upper plate 24 and the connecting rod 15, the torsion spring 27 is sleeved on the outer wall of the rotating shaft 23, the lower end of the upper plate 24 is fixedly connected with the fixed U-shaped plate 26, and the lower end of the upper plate 24 is further connected with the movable U-shaped plate 25 in a sliding manner.

In this embodiment, a plurality of sliding supports 403 are fixedly connected to the inner wall of the fixed U-shaped plate 26, a sliding plate 401 is slidably connected to each sliding support 403, and a plurality of springs 404 are connected between each sliding plate 401 and the corresponding sliding support 403.

In this embodiment, a limiting spring 405 is further fixedly connected between the fixed U-shaped plate 26 and the movable U-shaped plate 25, and each limiting spring 405 is arranged in the middle of the fixed U-shaped plate 26.

In this embodiment, the valve core lifting assembly 3 includes a worm 301, a worm wheel 305, a lead screw 303, and a lead screw sleeve 304, the worm 301 is fixedly connected to an output shaft of the servo motor 13, the worm 301 and the worm wheel 305 are mutually matched, the worm wheel 305 is movably disposed in the valve housing 1, the lower end of the worm wheel 305 is fixedly connected to the lead screw 303, the lead screw 303 is sleeved with the lead screw sleeve 304, and one side of the lead screw sleeve 304 is connected to the sliding rod 203.

In this embodiment, the upper end of the worm wheel 305 is rotatably connected to the inner wall of the valve housing 1 via the upper connecting shaft 302, the end of the worm 301 is rotatably connected to the fixing plate 306, and the fixing plate 306 is fixedly connected to the inner wall of the valve housing 1.

In this embodiment, the outer wall cover of inner cup 18 is equipped with first valve pad 10 and second valve pad 11, links to each other through bolt 6 between first valve pad 10 and the second valve pad 11, and first valve pad 10 and second valve pad 11 still pass through bolt 6 fixed connection including the upper end of apron 18, the lower extreme of inner cup 18 is provided with sealing washer 19, sealing washer 19 and connecting rod 15 cooperation are connected.

In this embodiment, a shaft hole 17 matching with an output shaft of the servo motor 13 is formed in a side edge of the valve housing 1, valve ports 8 are fixedly connected to two sides of the valve seat 7, a chute 21 matching with the valve core 16 is formed in an upper end of the valve seat 7, a channel 20 is formed in the valve seat 7, and a valve 22 is further arranged in a center of the valve seat 7.

The working principle of the electric control valve for the natural gas pipeline is as follows: when the worm 301 is controlled by the servo motor 13 to rotate, the worm wheel 301, the screw rod sleeve 304 and the screw rod 303 are matched with each other, so that the valve core 16 fixed at the lower end of the screw rod sleeve 304 can stretch out and draw back, the valve core 16 is directly fixed by an output shaft of a head line through the arrangement of parts such as the worm 301, the servo motor 13 needs to rotate more circles when the valve core 16 is lifted to the same distance, the equipment can more accurately adjust the state of the valve core 16 in the valve 22, and the operability of the equipment and the accuracy of control of the valve core 16 are improved.

Promote pinion rack 202 through electric putter 14, thereby can control case 16 in the inside pivoted state of valve 22, the nature controlled of case 16 has further been improved, thereby valve 22 self volume when the natural gas is carried has been increaseed, and then when having improved natural gas conveying efficiency, through setting up case 16 in spout 21, time and the area rather than the contact when the natural gas line carries have been reduced, consequently, the life-span and the time length of case 16 self use have been improved, the number of times of case 16 later stage maintenance has been reduced, use cost for the later stage has obtained the reduction.

And the torsional spring 27 that is equipped with makes case 16 can rotate the skew while, the angle of rotation that is equipped with limiting groove 29 can restrict case 16 is great, can cushion the effort that the natural gas caused to it when making case 16 self work to the activity U template 25 and the fixed U template 26 that are equipped with, through the effect of spring 404 and spacing spring 405, further strengthened the inner structure of case 16, improved the practicality of equipment.

The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. An electrically controlled valve for natural gas pipelines, comprising a valve housing (1), characterized in that: the two sides of the valve casing (1) are respectively fixedly connected with a motor shell (5) and a machine shell (9), the lower end of the valve casing (1) is fixedly connected with the upper end of an inner cover plate (18), the lower end of the inner cover plate (18) is fixedly connected with a through pipe (12), the lower end of the through pipe (12) is fixedly connected with a valve seat (7), a valve core lifting assembly (3) is arranged in the motor shell (5), the valve core lifting assembly (3) is connected to a valve core (16) through a connecting rod (15), the valve core (16) is movably arranged in the valve seat (7), a valve core adjusting assembly (2) is arranged in the machine shell (9), the valve core adjusting assembly (2) comprises an electric push rod (14), a tooth column (201), a toothed plate (202) and a sliding rod (203), the connecting rod (15) is rotatably penetrated on the sliding rod (203), the connecting rod (15) is positioned at the upper end of the sliding rod (203) and is fixedly connected with the tooth column (201), tooth post (201) meshing cooperates in pinion rack (202), pinion rack (202) fixed connection is on the output shaft of electric putter (14), the inside of case (16) is equipped with buffer unit (4), case (16) are including activity U template (25) and fixed U template (26), the both ends outer wall sliding connection of activity U template (25) is on the both ends inner wall of fixed U template (26), buffer unit (4) are including slide (401), even board (402), spring (404), the inner wall of fixed U template (26) and activity U template (25) all is provided with slide (401), relative two rotate between slide (401) and be connected with even board (402), be located on fixed U template (26) slide (401) one side is provided with spring (404).

2. An electrically controlled valve for a natural gas pipeline according to claim 1, wherein: electric putter (14) fixed connection is on the inner wall of casing (9), the one end sliding connection of slide bar (203) is on auxiliary support (308), auxiliary support (308) fixed connection is on the inner wall of valve casing (1), just the upper end inner wall fixedly connected with infrared inductor (307) of auxiliary support (308).

3. An electrically controlled valve for a natural gas pipeline according to claim 1, wherein: the lower extreme fixedly connected with pivot (23) of connecting rod (15), both ends fixedly connected with branch (28) of pivot (23), pivot (23) and branch (28) activity set up on spacing groove (29).

4. An electrically controlled valve for a natural gas pipeline according to claim 3, characterized in that: spacing groove (29) are seted up on upper plate (24), be connected with torsional spring (27) between upper plate (24) and connecting rod (15), torsional spring (27) cover is established on the outer wall of pivot (23), fixed U template (26) of lower extreme fixedly connected with of upper plate (24), just there is movable U template (25) lower extreme of upper plate (24) still sliding connection.

5. An electrically controlled valve for a natural gas pipeline according to claim 4, wherein: the inner wall of the fixed U-shaped plate (26) is fixedly connected with a plurality of sliding supports (403), each sliding support (403) is connected with a sliding plate (401) in a sliding mode, and a plurality of springs (404) are connected between each sliding plate (401) and each sliding support (403) in an opposite mode.

6. An electrically controlled valve for a natural gas pipeline according to claim 5, wherein: and a limiting spring (405) is fixedly connected between the fixed U-shaped plate (26) and the movable U-shaped plate (25), and each limiting spring (405) is arranged in the middle of the fixed U-shaped plate (26).

7. An electrically controlled valve for a natural gas pipeline according to claim 1, wherein: valve core lifting unit (3) include worm (301), worm wheel (305), lead screw (303), lead screw cover (304), worm (301) fixed connection is on the output shaft of servo motor (13), worm (301) and worm wheel (305) mutually support, worm wheel (305) activity sets up in valve casing (1), the lower extreme fixedly connected with lead screw (303) of worm wheel (305), the cover is equipped with lead screw cover (304) on lead screw (303), one side of lead screw cover (304) is connected on slide bar (203).

8. An electrically controlled valve for a natural gas pipeline according to claim 7, wherein: the upper end of worm wheel (305) is rotated through last connecting axle (302) and is connected on the inner wall of valve casing (1), the tip of worm (301) is rotated and is connected on fixed plate (306), fixed plate (306) fixed connection is on the inner wall of valve casing (1).

9. An electrically controlled valve for a natural gas pipeline according to claim 1, wherein: the outer wall cover of interior apron (18) is equipped with first valve pad (10) and second valve pad (11), link to each other through bolt (6) between first valve pad (10) and the second valve pad (11), just first valve pad (10) and second valve pad (11) still pass through the upper end of apron (18) including bolt (6) fixed connection, the lower extreme of interior apron (18) is provided with sealing washer (19), sealing washer (19) are connected with connecting rod (15) cooperation.

10. An electrically controlled valve for a natural gas pipeline according to claim 1, wherein: the side of the valve casing (1) is provided with a shaft hole (17) matched with an output shaft of the servo motor (13), two sides of the valve seat (7) are fixedly connected with a valve port (8), the upper end of the valve seat (7) is provided with a sliding groove (21) matched with the valve core (16), a channel (20) is formed in the valve seat (7), and a valve (22) is further arranged at the center of the valve seat (7).